CN115321741A

CN115321741A - Breeding sewage treatment method

Info

Publication number: CN115321741A
Application number: CN202110512786.5A
Authority: CN
Inventors: 陈志伟; 赵钢; 黄美成; 黄宇翔
Original assignee: Hunan Diyiqing Environmental Protection Technology Co ltd
Current assignee: Hunan Diyiqing Environmental Protection Technology Co ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2022-11-11

Abstract

The invention discloses a culture sewage treatment method, which comprises the following steps of 1: solid-liquid separation; separating liquid and solid in the culture sewage by adopting a solid-liquid separator; step 2: filtering; the liquid after solid-liquid separation enters intelligent water treatment equipment, and a water treatment agent is added into a container of the intelligent water treatment equipment; after the water treatment agent fully reacts, a filter element is started to carry out filtration; the water entering the filter element, namely the filtered water enters the post-stage treatment; discharging filter residues left in the container; and step 3: post-stage treatment; precipitating the filtered water, and carrying out decoloration, sterilization, biochemical treatment or MBR membrane treatment on the filtered water. The method can efficiently treat the breeding sewage.

Description

Breeding sewage treatment method

Technical Field

The invention relates to a method for treating aquaculture sewage.

Background

The existing technology for treating pig manure water comprises the following steps: an ectopic fermentation bed, a fermentation tank, UASB/USR (upflow anaerobic sludge blanket reactor/upflow solid anaerobic reactor), sewage treatment of a methane tank and the like; the prior art is characterized in that: the occupied area is large, and the cost of land and civil engineering is high; (2) high energy consumption, inaccurate dosing and high operation cost; (3) The requirement on environment is high (such as the requirement of strains on temperature and the like); (4) high maintenance cost; if the ectopic fermentation bed needs to stir the filling material continuously. A large amount of manual maintenance is required; the product is made of multi-purpose steel materials, is easy to corrode, and seriously influences the service life.

Therefore, it is necessary to design a method for treating aquaculture wastewater.

Disclosure of Invention

The invention aims to solve the technical problem of providing a culture sewage treatment method which can efficiently treat culture sewage.

The technical solution of the invention is as follows:

the system corresponding to the method, namely the culture sewage treatment system, comprises solid-liquid separation equipment, intelligent water treatment equipment and post-stage water treatment equipment;

the solid-liquid separation equipment is used for carrying out solid-liquid separation on the culture sewage;

the intelligent water treatment equipment is used for intelligently filtering the liquid output by the solid-liquid separation equipment; the intelligent water treatment equipment comprises an intelligent dosing module and lifting type filtering equipment; the lifting type filtering equipment comprises a container and a lifting type filter element; the intelligent dosing module is used for adding a water treatment agent into the container; the water entering the lifting filter element enters the next-stage lifting filter equipment or the next-stage rear-stage water treatment equipment; the intelligent water treatment equipment is provided with a lifting driving mechanism for driving the lifting filter element and a rotary driving mechanism for driving the lifting filter element to rotate; the intelligent water treatment equipment is also provided with a liquid pump for discharging water in the lifting filter element; the lifting filter element comprises a filter element body and a central rotating shaft; the outer surface of the filter element body is provided with a filter screen (78) with a plurality of filter holes; the intelligent water treatment equipment also comprises a slag discharging mechanism for discharging filter residues; the slag discharging mechanism can be a sewage suction pump or an electromagnetic valve arranged at the bottom of the container.

The post-stage water treatment equipment is used for further purifying the wastewater output by the intelligent water treatment equipment.

The post-stage water treatment equipment comprises a sedimentation tank; and at least one of biochemical treatment equipment, ultraviolet disinfection equipment, ozone disinfection equipment and MBR membrane treatment equipment is also included. The biochemical treatment equipment is aeration equipment or biological treatment equipment based on MBBR. Aeration (aeration) refers to the process of forcibly transferring oxygen from the air into the liquid, with the aim of obtaining sufficient dissolved oxygen. In addition, the aeration also can prevent the suspension in the tank from sinking, and strengthen the contact of the organic matters in the tank with microorganisms and dissolved oxygen. Thereby ensuring that the microorganisms in the tank have oxidative decomposition effect on organic matters in the sewage under the condition of sufficient dissolved oxygen; the method is characterized in that a certain amount of suspension carriers are added into a Reactor, so that the biomass and the biological species in the Reactor are improved, and the treatment efficiency of the Reactor is improved. As the density of the filler is close to that of water, the filler is completely mixed with the water during aeration, and the environment for the growth of microorganisms is three phases of gas, liquid and solid. The collision and shearing action of the carrier in water makes air bubbles finer, and the utilization rate of oxygen is increased. In addition, each carrier has different biological species inside and outside, anaerobic bacteria or facultative bacteria grow inside, aerobic bacteria grow outside, and each carrier is a micro-reactor, so that nitrification reaction and denitrification reaction exist at the same time, and the treatment effect is improved; the related technology comprises the following steps: the porous ball is also called a porous suspension ball: the porous suspended spherical suspended stuffing, also called porous rotating spherical suspended stuffing, is the latest series of products developed in various stuffing for domestic sewage treatment and biomembrane process treatment technology. Has full three-dimensional structure in the biochemical treatment of sewage, large specific surface area, direct feeding, no need of fixation, easy film formation and no blockage. The method is widely applicable to treatment of domestic sewage, petrochemical industry, light industry and paper making, food industry, wine brewing, sugar making, textile, printing and dyeing, leather making, pharmacy and other industrial wastewater.

The water treatment agent is any one or more of PAC, PAM and BAC. Ferrous sulfate is used for flocculation purification of water and removal of phosphate from municipal and industrial sewage to prevent eutrophication of water bodies; polyaluminium chloride (PAC) inorganic polymer coagulant, commonly known as xanthate; basic Aluminum Chloride (BAC) is an inorganic high-molecular high-valence polyelectrolyte coagulant, commonly called black powder; polyacrylamide (PAM) is a linear organic high molecular polymer and is a high molecular water treatment flocculant product, suspended particles in water can be adsorbed, a link bridging effect is realized among the particles, fine particles form larger flocs, and the sedimentation speed is accelerated. This process is called flocculation because PAM has a good flocculation effect as a flocculant for water treatment and is widely used for sewage treatment. The water treatment agent may also be ferrous sulfate.

The sedimentation tank is an inclined tube sedimentation tank.

The intelligent water treatment equipment also comprises a preceding stage water treatment module; the preceding stage water treatment module comprises a container and a rotary filter element (non-lifting); the water entering the lifting filter element enters a container in the lifting filter equipment, and a rotary driving mechanism for driving the rotary filter element is arranged on the preceding stage water treatment module; the front stage water treatment module is also provided with a liquid pump for discharging water in the lifting filter element; the rotary filter element comprises a filter element body and a central rotating shaft; the outer surface of the cartridge body is a screen (78) having a plurality of screen apertures.

The intelligent water treatment equipment is in a plurality of cascade configurations, namely the cascade configurations are arranged, and different water treatment agents can be added into each stage. Preferably two stages. The cascade refers to the drainage of the previous water treatment device as the inlet water of the next water treatment device.

Or the sewage is configured in parallel, wherein the parallel connection means that the sewage simultaneously enters 2 intelligent water treatment devices, different water treatment agents can be added, 2-3 grades are preferred, and the effluent water enters the post-stage water treatment device.

And the rear-stage water treatment equipment is provided with online water quality monitoring equipment, and if certain water quality indexes exceed standards, water is returned to the front stage for treatment.

The diameter of the filter hole is between 0.01 and 1 mm.

The lifting filter element is a star-shaped filter element and comprises a filter element body and a central pipe (61), the outer surface of the filter element body is provided with a filter screen (78) with a plurality of filter holes, and the filter element body comprises at least one star-shaped filter element unit; the star-shaped filter element unit is provided with a central hole, and the central tube is inserted into the central hole so as to fixedly connect the central tube and the filter element body into a whole; the central pipe is provided with a water inlet (77) which is positioned inside the star-shaped filter element unit; the star-shaped filter element unit is a regular N-angle prism-shaped filter element unit or a cylindrical filter element unit with N radial branch lobes, and N is not less than 4,N and is an integer.

A cultivation sewage treatment method comprises the following steps:

step 1: solid-liquid separation;

separating liquid and solid in the culture sewage by adopting a solid-liquid separator;

and 2, step: filtering;

the liquid after solid-liquid separation enters intelligent water treatment equipment, and a water treatment agent is added into a container of the intelligent water treatment equipment; after the water treatment agent fully reacts, a filter element is started to carry out filtration; the water entering the filter element, namely the filtered water enters the post-stage treatment; discharging filter residues left in the container;

and step 3: post-stage treatment;

precipitating the filtered water, and performing decoloration, sterilization, biochemical treatment or MBR membrane treatment on the filtered water; the sterilization refers to ultraviolet ray or ozone sterilization; the biochemical treatment refers to aeration or MBBR treatment; decolorizing refers to treating water with a decolorizing agent.

The intelligent water treatment equipment adopts a circulation treatment mode to carry out water treatment: the filter is implemented once each time the filter element is lifted. The filtration in step 2 is a multi-stage filtration. Alternatively, the filtration in step 2 is a parallel filtration.

The controller is adopted to control the work of the intelligent water treatment equipment.

And returning filter residue to the step 1 for solid-liquid separation again.

The intelligent water treatment equipment is used for intelligently filtering the liquid output by the solid-liquid separation equipment; the intelligent water treatment equipment comprises an intelligent dosing module and lifting type filtering equipment; the lifting type filtering device comprises a container and a lifting type filter element; the intelligent dosing module is used for adding a water treatment agent into the container; the water entering the lifting filter element enters the next-stage lifting filter equipment or the next-stage rear-stage water treatment equipment; the intelligent water treatment equipment is provided with a lifting driving mechanism for driving the lifting filter element and a rotary driving mechanism for driving the lifting filter element to rotate; the intelligent water treatment equipment is also provided with a liquid pump for discharging water in the lifting filter element; the lifting filter element comprises a filter element body and a central rotating shaft; the outer surface of the filter element body is a filter screen (78) with a plurality of filter holes.

In the post-treatment process, online water quality monitoring equipment is adopted to monitor the water quality online, and if certain water quality indexes exceed standards, water is returned to the preceding stage for treatment.

The star-shaped filter element unit is a cylindrical filter element unit with N radial branch flaps, and an arc-shaped transition surface or an obtuse transition surface, namely a round chamfer or a straight chamfer, is arranged between the adjacent radial branch flaps, so that sundries can be prevented from being clamped in a narrow space.

Preferably, the bottom of the star-shaped filter element unit is provided with a central hole; the lower end of the central tube is inserted into the central holes at the top and the bottom of the star-shaped filter element unit, the bottom of the filter element body is provided with a central hole which is sealed relative to the outside of the filter element body, or the bottom of the filter element body is provided with a central hole on which a layer of filter screen is arranged.

The bottom of the star-shaped filter element unit is provided with a central hole; the lower end of the central tube is inserted into the central holes at the top and the bottom of the star-shaped filter element unit, the bottom of the filter element body is provided with a central hole which is sealed relative to the outside of the filter element body, or the bottom of the filter element body is provided with a central hole on which a layer of filter screen is arranged.

The cartridge body also includes a cartridge frame (220) lining the filter screen.

The filter element frame is formed by connecting a peripheral frame ring, a plurality of support columns and a plurality of outward radial support spokes (223) or integrally forming. The frame ring is a frame ring of a regular N-pointed star shape, or an outer frame having N radial (radial) lobes.

The upper end of the central pipe is fixed on the lifting platform.

The upper end of the central pipe is fixed on the rotary lifting platform.

The filter element body comprises N star-shaped filter element units; n star-shaped filter element units are connected on the central pipe in series; m is an integer between 2 and 5; the central pipe is provided with M water inlets which are respectively arranged in M star-shaped filter element units.

A water treatment device comprises a container, a filter element lifting driving mechanism and a filter element self-cleaning mechanism;

the filter element lifting driving mechanism is used for driving the filter element to move up and down relative to the container; the filter element is positioned in the container; the filter element self-cleaning mechanism is used for cleaning the outer surface of the filter element; the water treatment device also comprises a liquid inlet pipe, a liquid discharge mechanism and a waste discharge mechanism; the liquid inlet pipe is used for adding water to be filtered into the container; the liquid discharge mechanism is used for discharging water in the filter element; the waste discharge mechanism is used for discharging waste at the bottom of the container; the filter element is the star-shaped filter element.

The water treatment device also comprises a control module, and the control module is used for controlling the filter element lifting driving mechanism, the liquid inlet pipe, the liquid discharge mechanism and the waste discharge mechanism.

The filter core rotary driving mechanism is connected with the filter core and controlled by the control module.

Preferably, the control module is an MCU. Such as a PLC, a single chip, a DSP, etc.

A water treatment system comprising a plurality of the aforementioned water treatment devices; a plurality of water treatment devices are cascaded; the cascade refers to the drainage of the previous water treatment device as the inlet water of the next water treatment device.

The periphery of the filter element is provided with a filter screen, the diameter of the mesh on the filter screen is 0.1-2mm, the filter screen is arranged according to specific application occasions and requirements, if the filter effect is good, the filter holes with small diameter can be selected, and if the filter efficiency is high, the filter holes with large diameter can be selected. Or a plurality of water treatment devices are connected in series, and the diameter of the filter hole of the front stage is larger than that of the filter hole of the rear stage. The filter screen can be the wire net, and is preferred, and the filter screen can also adopt etching technique production, and intensity is high. The size of the filter holes is illustrated schematically, and is not intended to represent the actual ratio of filter holes to equipment.

Has the advantages that:

the intelligent full-automatic water treatment equipment has the advantages that:

(1) The occupied area is small, the land cost is low, and the civil engineering cost is low; (2) the energy consumption is low; (3) the requirement on the environment is not high; (4) intelligent modular design, good flexibility; due to the modular design, the module group can be used for treating the sewage. (5) the maintenance cost is low; a large amount of labor is not needed, and unattended operation can be achieved. (6) Compared with the traditional process, the system is innovated in a breakthrough way, and the construction period can be greatly shortened.

The intelligent water treatment equipment of the system is a breakthrough environmental protection technical innovation. The invention creates an intelligent modularized dosing unit and an intelligent self-cleaning precipitation and filtration unit globally, optimizes an ammonia nitrogen biochemical unit and a post-stage precipitation unit, meets the requirement of an MBR (membrane bioreactor) membrane on turbidity, and can carry out high-efficiency standard-reaching treatment on aquaculture sewage which is difficult to treat in the environmental protection industry.

The star-shaped filter element disclosed by the invention has the following characteristics:

(1) The structure is compact, and the stability is good; as the integral structure is a star-shaped filter element, the star-shaped filter element unit is a regular N-angle prism-shaped filter element unit or a cylindrical filter element unit with N radial branches, and N is not less than 4,N which is an integer. Compared with other forms of filter elements, the filter element is preferably supported by the frame, and the structure is stable. The material thickness of the filter element can also be increased, so that the frame is eliminated; moreover, due to the adoption of the star-shaped filter element, compared with a cylindrical or spherical filter element and the like, the filter surface is actively and greatly enhanced, so that the filtering efficiency can be obviously improved.

(2) One or more filter elements are concentrated at the lower end of the central tube (rotating shaft), and compared with a single filter element and a cylindrical filter element with larger height, the filter element has the advantages of large contact area between the filter screen and liquid and high filtering efficiency.

In summary, the filter element is a single filter element or a plurality of star-shaped filter element units which are connected in series, compared with a cylindrical filter element,

the effective filtration area is bigger, and the filter core is concentrated in the lower extreme of pivot moreover, and the rate of utilization is high.

In addition, the water treatment device has the following characteristics:

1. the water treatment device (water treatment unit) has compact and integrated structure; the occupied space is small; flexible configuration is facilitated;

2. automatic operation; the device can be unattended; remote monitoring;

the equipment can automatically run under the control of the controller, unattended operation can be realized, remote control can be realized after the controller is connected with a communication module, and on-site data can be transmitted to a remote server or a data terminal (such as a smart phone) to realize remote monitoring; therefore, the degree of automation is high, and the degree of digitization is high;

the control can also be realized by adopting a simulated relay control system, and the specific control is the existing mature technology.

3. The modular concept is adopted, and the modular operation is realized;

can be flexibly connected in parallel or cascaded; the module type operation is convenient for later maintenance;

4. the water treatment device (water treatment unit) has a self-cleaning function;

the whole process and structure are ingenious in design concept; the processing capacity is strong.

5. Ultraviolet sterilization and ozone sterilization can be further added at the water outlet pipe;

the invention can treat sewage, can also be used for purifying water in water plants, and has wide application;

the mesh number of the filter element can be set according to the requirement, and the larger the mesh number is, the more fine filtration can be realized.

In addition, different water treatment apparatuses perform different treatments depending on the chemicals to be put into water.

The liquid level sensor for detecting the liquid level in the container can be a magnetic sensor (hall sensor) or an optical sensor (such as an infrared correlation tube).

The water treatment device of the invention has the core characteristics that: automatic lifting (lifting action, cleaning filter element and circulating action), self-cleaning, wastewater purification by filtration and circulating action.

In conclusion, the water treatment device has high automation degree, can realize the refined treatment of the wastewater or the water to be purified, is easy to implement, has compact structure, is convenient to flexibly move and combine, is a great improvement on the existing water treatment equipment, and has great social benefit and economic benefit.

Drawings

FIG. 1 is a schematic view (top view) of a single right hexagonal star shaped cartridge unit frame;

FIG. 2 is a schematic (top view) of a screen of a single right hexagonal star shaped cartridge unit;

FIG. 3 is a schematic view of a single right hexagonal star shaped cartridge unit frame (front view);

FIG. 4 is a schematic (front view) of a screen of a single right hexagonal star shaped cartridge unit;

FIG. 5 is a schematic diagram of the internal structure of a cascade of 3 water treatment devices (with the filter element at the lowermost end);

FIG. 6 is a schematic diagram of a cascade of water treatment devices (with the filter element at the lowermost end);

FIG. 7 is an external schematic view of a cascade of 3 water treatment devices (with the filter elements at the lowermost end);

FIG. 8 is a schematic perspective view of a cascade of 3 water treatment devices (with the filter elements at the lowermost end);

FIG. 9 is a schematic diagram of the external configuration of a cascade of 3 water treatment devices (with the cartridge uppermost);

FIG. 10 is a schematic view of a cascade of water treatment devices (with the cartridge uppermost);

fig. 11 is a schematic structural view of 3 groups of filter elements connected with a cross beam through a drop rod.

FIG. 12 is a schematic diagram of 2 intelligent water treatment modules connected in parallel;

FIG. 13 is a schematic diagram of 2 intelligent water treatment modules connected in series (cascade);

FIG. 14 is a block diagram of a relay control system;

FIG. 15 is a relay control flow diagram;

FIG. 16 is a control system block diagram;

FIG. 17 is a schematic structural view (perspective view) of a notched plugged annular inlet pipe;

FIG. 18 is a schematic view of the structure of a notched plugged annular inlet pipe (front view);

FIG. 19 is a schematic structural view (front view) of an annular tube without gaps and plugs;

FIG. 20 is a schematic view of a single medicated module;

FIG. 21 is a schematic view of a 3 medicated module assembly;

FIG. 22 is a schematic diagram of a drug solution tank supplying 3 water treatment devices;

FIG. 23 is a schematic view of the dosing module in cooperation with a water treatment device;

fig. 24 is a schematic view (top view) of a tetragonal star filter element unit frame;

FIG. 25 is a schematic (top) view of a filter screen of a star filter element having 4 radial lobes with rounded chamfers (curved transition surfaces) between adjacent lobes;

FIG. 26 is a schematic (top view) of a screen of a star filter element unit having 6 radial lobes with rounded chamfers between adjacent lobes;

FIG. 27 is a schematic view of a configuration in which 2 star-shaped filter elements are combined to form 1 filter element;

FIG. 28 is a schematic view of a configuration in which 3 half-star-shaped filter elements are combined into 1 filter element;

FIG. 29 is a schematic (top) view of a filter screen of a star filter element having 4 radial lobes with straight chamfers (obtuse angle transitions) between adjacent lobes;

FIG. 30 is a water treatment flow diagram (without a cake dewatering device);

FIG. 31 is a flow chart of water treatment (installation for dewatering filter cake);

FIG. 32 is a schematic view of a rotary dosing module (front view);

FIG. 33 is a schematic view (side view) of a roller-type dosing module;

fig. 34 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A in fig. 33.

FIG. 35 is a front view of a preceding stage (front end) water treatment apparatus (device);

FIG. 36 is a side view of a preceding stage (front end) water treatment apparatus (device);

fig. 37 is a perspective view of a preceding stage (front end) water treatment apparatus (device);

FIG. 38 is a cross-sectional view B-B of FIG. 35;

FIG. 39 isbase:Sub>A cross-sectional view A-A of FIG. 36;

FIG. 40 is a schematic view showing the operation of the backing apparatus and the draw pump;

FIG. 41 is a plan view of a preceding stage (front end) water treatment apparatus.

Description of reference numerals: 2-a liquid pump, 5-a liquid inlet pipe, 7-a filter element and 8-a container; 12-a discharge pipe, 13-a motor, 14-a first gear, 15-a second gear, 16-a bearing and 17-an electric control lifting driving mechanism. 18-a lifting platform; 19-bracket, 20-beam, 21-sedimentation tank; 77-water inlet hole, 78-filter screen; 51-pipe body, 52-water outlet; 53-water inlet end of the tube body, 54-outer end of the tube body; 61-a central tube; 62-connecting rod, 63-drop rod. 207-water pumping pipe; 208-a discharge motor; 220-filter element frame, 221-center hole, 222-support ring, 223-support spoke and 224-dosing pipe. 230-support plate, 231-stirring motor, 232-spiral feeding mechanism, 233-storage bin, 234-spiral feeding driving motor, 235-tank body, 236-hoop, 237-stirring shaft, 238-stirring impeller, 239-base, 240-water treatment agent solution control valve, 241-container wall, 242-water adding pipe, 243-water adding valve, 244-discharge port and 245-solution output pipe. 251-liquid adding pipe, 252-liquid medicine pump, 253-support plate, 254-liquid adding main pipe, 255-liquid adding branch pipe, 256-liquid medicine barrel, 257-stirring shaft, 258-stirring blade, 259-drain pipe and 260-liquid pump support seat. 264-discharge spout, 265-oblique feed channel. 266-a recess; 267-hopper, 268-stirring motor support; 269-strip-shaped concave part, 271-round concave part, 276-blanking roller, 277-roller rotating shaft, 278-baffle rotating shaft, 279-baffle, 280-pipe wall, 281-supporting frame and 281-blanking driving motor; 283-an upper support frame, 284-a lower support frame and 285-a liquid medicine stirring motor; 286-roller mounting plate. 1-1 outer barrel, 1-2 backing stage bearings, 1-3 driven gears, 1-4 backing stage liquid pumps, 1-5 water pumping pipes, 1-6 driving motors, 1-7 driving gears, 1-8 main rotating shafts, 1-9 sewage suction pumps, 1-10 filter barrels, 1-11 water inlet holes, 1-12 bottom valves, 1-13 cascade pipes, 1-14 backing stage water inlet pipes and 1-15 backing stage water outlet pipes. 1-16 lower brackets; 1-17 upper supports, 1-18 synchronous belts, 1-19 driving synchronous wheels and 1-20 driven synchronous wheels.

Detailed Description

The invention will be described in further detail below with reference to the following figures and specific examples:

example 1:

the dosing module comprises:

referring to fig. 34-36, a roller dosing module includes a roller dosing device and a liquid barrel 284; the rotary roller type quantitative dosing device is positioned above the liquid medicine barrel, and a discharge port of the rotary roller type quantitative dosing device is butted with a feed port on the liquid medicine barrel; the liquid medicine barrel is provided with a liquid medicine stirring mechanism for stirring liquid medicine; the liquid medicine mechanism comprises a stirring shaft and a stirring blade in the liquid medicine barrel and a liquid medicine stirring motor 285 arranged on the liquid medicine barrel; the lower end of the stirring shaft is connected with a stirring blade, and the stirring shaft is connected with a rotating shaft of a liquid medicine stirring motor; the stirring shaft is vertically arranged, which is the prior art; the rotary roller type quantitative dosing device comprises a hopper 267, a blanking roller 276, a support frame 281 and a blanking channel; the blanking roller is driven by a blanking driving motor 281; the blanking roller is arranged below the feed opening of the hopper, and the roller surface of the blanking roller is in contact with the feed opening; the blanking roller is arranged on a roller mounting plate 286 extending out of the lower part of the hopper, or the blanking roller is arranged on the support frame; the roller surface of the blanking roller is provided with at least one concave part; when the blanking roller does not rotate, the blanking roller can seal a blanking port at the lower end of the hopper to prevent the material in the hopper from leaking; when the blanking roller rotates, the concave part can prevent the materials in the hopper from being taken out, and the materials are output to the liquid medicine barrel through the feeding channel, and the outlet of the feeding channel is the discharge hole; the lower end of the support frame is provided with 4 legs 284; the liquid medicine barrel is arranged in a space surrounded by the plurality of supporting legs; a liquid medicine pump 252 is arranged on the supporting frame, and a liquid inlet pipe of the liquid medicine pump is inserted into the liquid medicine barrel; the feeding channel is an inclined feeding channel 265, and the inclined feeding channel enables the materials to smoothly enter, namely, the materials slide into the liquid medicine barrel; the plurality of concave parts are arranged at equal intervals along the circumferential direction of the blanking roller; the blanking driving motor is driven by a frequency converter, the speed can be adjusted, the adjustment of the dosing amount in unit time is realized, and the frequency can be manually adjusted by the frequency converter or controlled by an MCU (microprogrammed control Unit); the frequency converter is controlled by the MCU; the blanking driving motor is controlled by the MCU, and a position detection sensor is arranged on the blanking roller; the position detection sensor is a Hall sensor, a coded disc or a photoelectric switch, the liquid medicine pump is controlled by an MCU (microprogrammed control unit), and the MCU is connected with a communication module, so that remote monitoring is facilitated; the liquid outlet pipe of the liquid medicine pump is connected with the interior of a container in the water treatment device, so that the solution in the liquid medicine barrel is pumped into the container.

Another water treatment solution adding mechanism

One, single dosing module

Referring to fig. 20,23, a water treatment solution adding device comprises a dosing module, which comprises a liquid medicine barrel 256, a liquid adding pipe, a liquid medicine adding pipe 251 and a liquid medicine pump 255; the liquid medicine barrel is used for storing water treatment solution, and the water treatment solution is solution of water treatment agent powder dissolved in water or solution of water treatment agent solution after further dilution; the liquid feeding pipe is fixed on the liquid medicine barrel or a fixed object outside the liquid medicine barrel, and is particularly fixed on the liquid pump supporting seat 260 and used for feeding dilution water or liquid medicine into the liquid medicine barrel; a water valve is arranged on the liquid feeding pipe; the liquid medicine adding pipe conveys liquid medicine in the liquid medicine barrel to a water treatment container, and the water treatment container is a container of a water treatment device for performing water treatment based on a filter element; a liquid medicine pump is arranged on the liquid medicine adding pipe. A sensor for detecting the amount of liquid in the liquid medicine barrel is arranged in the liquid medicine barrel; the sensor is a pressure sensor or a liquid level sensor. The liquid pipe comprises a liquid feeding main pipe 254 and a liquid feeding branch pipe 255; the main liquid adding pipe is communicated with the branch liquid adding pipe. The water valve is arranged on the main liquid adding pipe or the branch liquid adding pipe. An electrically driven stirring mechanism is arranged in the liquid medicine barrel. The water treatment agent is bulk powder or medicine bag added into the liquid medicine barrel, and the liquid added into the liquid adding pipe is tap water for diluting the water treatment agent. The medicine package can be a medicine package filled with water treatment agent powder or a liquid medicine package. The medicine bag is filled with solid powder, and the packaging bag of the medicine bag is made of a material which can be dissolved immediately when meeting water. The medicine package is circularly put in by adopting a machine, and the machine is the prior art.

the filter element lifting driving mechanism is used for driving the filter element to move up and down relative to the container; the filter element is positioned in the container; the filter element self-cleaning mechanism is used for cleaning the outer surface of the filter element;

the water treatment device also comprises a liquid inlet pipe, a liquid discharge mechanism and a waste discharge mechanism;

the liquid inlet pipe is used for adding water to be filtered into the container;

the liquid discharge mechanism is used for discharging water in the filter element;

the waste discharge mechanism is used for discharging waste at the bottom of the container;

the water treatment device also comprises a water treatment solution adding device, and the water treatment solution adding device is the water treatment solution adding device.

Two, 3 medicine-feeding branches, shared medicine liquid barrel

Referring to fig. 22-23, a water treatment solution adding device comprises a dosing module, which comprises a liquid medicine barrel 256, a liquid adding pipe, a liquid medicine adding pipe 251 and a liquid medicine pump 255; the liquid medicine barrel is used for storing water treatment solution, and the water treatment solution is solution of water treatment agent powder dissolved in water or solution of water treatment agent solution after further dilution; the liquid feeding pipe is fixed on the liquid medicine barrel or a fixed object outside the liquid medicine barrel, and is particularly fixed on the liquid pump supporting seat 260 and used for feeding dilution water or liquid medicine into the liquid medicine barrel; a water valve is arranged on the liquid feeding pipe; the liquid medicine adding pipe conveys liquid medicine in the liquid medicine barrel to a water treatment container, and the water treatment container is a container of a water treatment device for performing water treatment based on a filter element; the liquid adding pipe is provided with a liquid medicine pump. A sensor for detecting the amount of liquid in the liquid medicine barrel is arranged in the liquid medicine barrel; the sensor is a pressure sensor or a liquid level sensor. The liquid pipe comprises a liquid feeding main pipe 254 and a liquid feeding branch pipe 255; the main liquid adding pipe is communicated with the branch liquid adding pipe. The water valve is arranged on the main liquid adding pipe or the branch liquid adding pipe. An electrically driven stirring mechanism is arranged in the liquid medicine barrel. The water treatment agent is bulk powder or medicine bag added into the liquid medicine barrel, and the liquid added into the liquid adding pipe is tap water for diluting the water treatment agent. The medicine package can be a medicine package filled with water treatment agent powder or a liquid medicine package. The medicine bag is filled with solid powder, and the packaging bag of the medicine bag is made of a material which can be dissolved immediately when meeting water. The medicine package is circularly put in by adopting a machine, and the machine is the prior art.

The medicine module includes that 3 add liquid pipe and 3 liquid medicine pumps, is equipped with a liquid medicine pump on each adds the liquid pipe. This case is particularly suitable for the case where 3 water treatment apparatuses share one chemical agent. The liquid feeding pipe comprises a main liquid feeding pipe 254 and a branch liquid feeding pipe 255; the main liquid adding pipe is communicated with the branch liquid adding pipe;

a water treatment system, a plurality of water treatment devices are cascaded;

the water treatment device comprises a container, a filter element lifting driving mechanism and a filter element self-cleaning mechanism;

the filter element lifting driving mechanism is used for driving the filter element to move up and down relative to the container; the filter element is positioned in the container; the filter element self-cleaning mechanism is used for cleaning the outer surface of the filter element; the water treatment device also comprises a liquid inlet pipe, a liquid discharge mechanism and a waste discharge mechanism; the liquid inlet pipe is used for adding water to be filtered into the container;

the cascade refers to the drainage of the previous water treatment device as the inlet water of the next water treatment device.

The water treatment system also comprises a water treatment solution adding device, and the water treatment solution adding device is the water treatment solution adding device.

Three, 3 independent medicine adding modules

Referring to fig. 21,23, a water treatment solution adding device comprises 3 dosing modules, each of which comprises a drug solution barrel 256, a liquid adding pipe, a drug solution adding pipe 251 and a drug solution pump 255; the liquid medicine barrel is used for storing water treatment solution, and the water treatment solution is solution of water treatment agent powder dissolved in water or solution of water treatment agent solution after further dilution; the liquid feeding pipe is fixed on the liquid medicine barrel or a fixed object outside the liquid medicine barrel, and is particularly fixed on the liquid pump supporting seat 260 and used for feeding dilution water or liquid medicine into the liquid medicine barrel; a water valve is arranged on the liquid feeding pipe; the liquid medicine adding pipe conveys liquid medicine in the liquid medicine barrel to a water treatment container, and the water treatment container is a container of a water treatment device for performing water treatment based on a filter element; the liquid adding pipe is provided with a liquid medicine pump. A sensor for detecting the amount of liquid in the liquid medicine barrel is arranged in the liquid medicine barrel; the sensor is a pressure sensor or a liquid level sensor. The liquid pipe comprises a liquid feeding main pipe 254 and a liquid feeding branch pipe 255; the main liquid adding pipe is communicated with the branch liquid adding pipe. The water valve is arranged on the main liquid adding pipe or the branch liquid adding pipe. An electrically driven stirring mechanism is arranged in the liquid medicine barrel. The water treatment agent is bulk powder or medicine bag added into the liquid medicine barrel, and the liquid added into the liquid adding pipe is tap water for diluting the water treatment agent. The medicine package can be a medicine package filled with water treatment agent powder or a liquid medicine package. The medicine bag is filled with solid powder, and the packaging bag of the medicine bag is made of a material which can be dissolved immediately when meeting water. The medicine package is circularly put in by adopting a machine, and the machine is the prior art.

Namely 3 dosing modules for providing liquid medicine for 3 water treatment devices. This case is suitable for the case where 3 water treatment apparatuses use different water treatment agents.

The liquid feeding pipe comprises a liquid feeding main pipe 254 and a liquid feeding branch pipe 255; the main liquid adding pipe is communicated with the branch liquid adding pipe; n water treatment facilities share the liquid feeding main pipe.

A water treatment system, a plurality of water treatment devices are cascaded;

The water treatment solution adding device also comprises an MCU, the sensor is connected with the MCU, and the water valve, the liquid medicine pump, the stirring mechanism and the like are all controlled by the MCU.

The MCU is also connected with a temperature sensor and a heating mechanism, the temperature sensor is connected with the MCU, and the heating mechanism is controlled by the MCU, because the dissolution of some water treatment is related to the temperature, or some sensors (such as pressure sensors) work in relation to the temperature.

Preferably, the outlet of the liquid adding pipe is provided with a flow meter connected with the MCU and used for counting the solution entering the water treatment container.

The water treatment solution adding device has the following characteristics:

(1) The liquid medicine barrel and the like are arranged on the ground or on the bracket and do not need to be lifted, which is beneficial to the spatial arrangement of the whole water treatment equipment.

(2) By adopting the mode of the medicine bag and the diluent, the quantitative matching of the medicine powder bag and a barrel of water can be realized, and the concentration control is easy. A liquid medicine concentration detection sensor is arranged in the liquid medicine barrel to monitor the stability of the concentration of the water treatment agent.

(3) A plurality of medicine modules can directly correspond to a plurality of water treatment facilities, and the corresponding relation is clear and definite, easily independent control.

(4) The MCU is adopted to control the whole process, and the automation degree is high.

(5) Has a stirring mechanism, and can accelerate the dissolution of the medicinal powder.

In conclusion, the water treatment solution adding device has rich functions and is easy to implement.

Referring to fig. 5-11, a water treatment device comprises a container, a filter element lifting driving mechanism, a filter element self-cleaning mechanism and a water treatment agent adding mechanism; the filter element lifting driving mechanism is used for driving the filter element to move up and down relative to the container; the filter element is positioned in the container; the filter element self-cleaning mechanism is used for cleaning the outer surface of the filter element; the water treatment device also comprises a liquid inlet pipe, a liquid discharge mechanism and a waste discharge mechanism; the liquid inlet pipe is used for adding water to be filtered into the container and washing the outer surface of the filter element in a water inlet environment; the liquid discharge mechanism is used for discharging water in the filter element; the waste discharge mechanism is used for discharging waste at the bottom of the container; the water treatment medicament adding mechanism is used for adding medicament into the container; the water treatment agent adding mechanism is the water treatment agent adding mechanism, and a solution output pipe of the water treatment agent adding mechanism is communicated with an inner cavity of the container. The water treatment device also comprises a control module, and the control module is used for controlling the filter element lifting driving mechanism, the liquid inlet pipe, the liquid discharging mechanism and the waste discharging mechanism. The fixing part of the water treatment device is the top of an outer barrel of the water treatment device or the lower end of a suspender, and the suspender is connected with the cross beam. The water treatment device also comprises a filter element rotary driving mechanism connected with the filter element, and the filter element rotary driving mechanism is controlled by the control module. Preferably, the control module is an MCU. Such as a PLC, a single chip, a DSP, etc.

1-4, the star-shaped filter element comprises a filter element body and a central tube 61, wherein the outer surface of the filter element body is provided with a filter screen 78 with a plurality of filter holes, and the filter element body comprises at least one star-shaped filter element unit; the star-shaped filter element unit is provided with a central hole, and the central tube is inserted into the central hole so as to fixedly connect the central tube and the filter element body into a whole;

the central pipe is provided with a water inlet 77 which is positioned inside the star-shaped filter element unit.

The bottom of the star-shaped filter element unit is provided with a central hole; the lower end of the central tube is inserted into the central holes at the top and the bottom of the star-shaped filter element unit, the bottom of the filter element body is provided with a central hole which is closed relative to the outside of the filter element body, or the bottom of the filter element body is provided with a layer of filter screen arranged on the central hole.

The star-shaped filter element unit is a regular N-angle prism-shaped filter element unit or a cylindrical filter element unit with N radial (radial) lobes, and N is not less than 4,N which is an integer.

Preferably, the star-shaped filter element unit is a cylindrical filter element unit with N radial branches, and an arc transition surface or an obtuse transition surface is arranged between adjacent radial branches. Namely, the round chamfer or the straight chamfer, can prevent sundries from being clamped in a narrow space.

Preferably, the front ends of the radial branch petals are also arc-shaped, so that edges and corners are avoided, and personnel injury can be avoided to the maximum extent during manufacturing.

The right hexagonal star-shaped filter element is shown in figures 1-4; the right four-corner star-shaped filter element is shown in figure 24;

cylindrical cartridge elements having 4 radial lobes are shown in fig. 25, 26, 29, where adjacent lobes have arcuate transition surfaces in fig. 25 and 26 and obtuse angle transition surfaces, or straight chamfers, in fig. 29.

The cartridge body also includes a cartridge frame 220 that lines the filter screen.

The filter element frame is formed by connecting a peripheral frame ring, a plurality of support columns and a plurality of outward radial support spokes (223) or integrally forming. The frame ring refers to a frame ring of a regular N-pointed star shape or an outer frame with N radial (radial) lobes. The middle support ring (non-circular ring, may be a positive N star, etc.) is a member that acts as a stiffener.

The upper end of the central tube is fixed on the lifting platform.

The upper end of the central tube is fixed on the rotary lifting platform.

In fig. 5, 9 and 10, only the cartridge frame is shown, and the screen on the outside of the frame is not shown, as will be described.

Fig. 11 shows the case where the container is a sink, and fig. 5 to 10 show the case where the container is an outer tub.

Description of the working principle of the water treatment device:

lifting the filter element to the highest position, enabling water to be treated to enter a container (the container is an outer barrel or a water tank) through a water inlet pipe, stopping water inflow after the water in the container reaches a preset liquid level or reaches a preset capacity, putting in liquid medicine to enable the water to be treated to generate floccules, enabling the filter element to descend after the medicament fully reacts, flushing the outer wall of the filter element with water to achieve self-cleaning of the filter element in the descending process, enabling the water in the container to enter the interior of the filter element after being filtered by the filter element after the filter element descends, and pumping out the filtered liquid by a pneumatic liquid pump; the waste material is left in the container or on the outer wall of the filter element; after the water is drained, the filter element rises, in the rising process, the metal pipe enters water to wash the filter element, and the waste material at the bottom of the container is removed by a discharge pump at the bottom of the container. And completing one circulation and entering the next water treatment circulation.

The specific control mode and the time sequence are both the prior art.

The working principle of the water treatment system is as follows:

the water treatment devices are connected in series, namely cascaded, and the 'purified water' formed by filtering the previous water treatment device enters the next stage for continuous treatment, so that impurities in water are filtered more, and the water quality meets the relevant national standards better.

The water treatment method comprises the following steps:

a water treatment method, set up the filter element in the container, the filter element is driven by the lifting gearing; the method comprises the following steps:

step 1: liquid feeding and dosing;

the controller starts the electric control lifting driving mechanism to lift the filter element, controls the water inlet valve and starts the dosing mechanism to enable water to be treated and a medicament to enter the container, and the water to be treated is ejected from the water inlet pipe to wash the outer wall of the filter element, so that the self-cleaning of the filter element is realized;

stopping rotation of the filter element after the filter element rises to a preset position (such as an upper limit position);

the discharge pipe is closed in the liquid feeding process, so that the liquid in the container is prevented from flowing out;

for adding chemicals, the purifying chemicals (such as flocculating agent, etc., preferably, the chemicals and water are added into the container at the same time) are added at the same time of water feeding, or the purifying chemicals are added after the water is added into the container; or adding medicine first and then feeding water; as long as the medicine and the water can be fully mixed and reacted;

a dosing mechanism provided in the container for dosing the water treatment agent into the container;

the drug is administered by the administration means, and the drug is administered simultaneously when water is added, and the drug is preferably added through a separate tube, and preferably a solution with the drug is administered. Controlling the liquid medicine to enter or stop entering through a valve; or directly into a solid or powdered medicament, not shown.

Step 2: a reaction step;

stopping feeding liquid after the liquid in the container reaches a certain set liquid level, and waiting for a preset time to enable the medicament in the solution to fully act;

and step 3: pumping water;

the controller drives the filter element to descend through the electric control lifting driving mechanism, the filter element descends to a preset height to ensure that the lower end of the water outlet pipe contacts the liquid level, the water suction pump is started, and the water which is treated in the filter element is sucked through the water suction pipe;

and 4, step 4: a step of discharging waste materials;

after the water in the filter element is pumped out, the controller opens a discharge valve on a discharge pipe, so that sediment at the bottom in the container is discharged (or sucked out); [ regarding the discharged fertilizer, the waste can be further dehydrated, such as by using a stack screw machine, a plate filter and other equipment ]

After the sediment is discharged, the discharge pipe is closed again;

and (5) ending the step, or returning to the step 1 and starting the water treatment process of the next period.

The filter element is a rotary filter element and is driven by a motor through a transmission mechanism; the controller controls the rotation of the filter element through the motor and the transmission mechanism; when the filter element rises, the controller starts the motor to drive the filter element to rotate, and the filter element stops rotating after rising to a preset position (such as an upper limit position).

Through the time of setting row's waste material, the guarantee precipitate can fully be discharged, perhaps detects the weight of the precipitate of container bottom through weighing sensor and is less than the default, and the guarantee precipitate can fully be discharged.

The filter element is located at the lowest position, the liquid level is lower than the preset liquid level, or the flow of the water pipe is detected to be lower than the preset value through the flow meter arranged at the water outlet pipe, and the fact that water in the filter element is drained is indicated.

And a relay protection control circuit is adopted to realize circulating water treatment control.

The circulating water treatment control is realized by adopting a control circuit based on the MCU; the MCU is a singlechip, a PLC, an ARM processor or a DSP.

A plurality of lifting filter elements and liquid discharge devices are arranged in one container; and synchronously controlling the plurality of lifting filter elements and the liquid drainage device.

The controller monitors the liquid level in the container through the liquid level detection module.

The liquid level detection module adopts a liquid level sensor or converts the liquid level into liquid level by adopting other sensors; if a flowmeter at the position of the water inlet pipe is adopted, the liquid level can be converted through the flow and the cross-sectional area of the container, and the liquid level can also be converted through hydraulic data acquired by a pressure sensor, because the pressure at the bottom of the liquid is in direct proportion to the liquid level.

The inlet tube is annular feed liquor pipe, is equipped with a plurality of apopores on the pipe wall of feed liquor pipe.

The bottom of filter core is equipped with the anti-water collector of magnetic suspension, and the anti-water collector of magnetic suspension is located the outside of filter core. When water exists, the magnetic levitation anti-water collector seals a pipeline of the magnetic levitation anti-water collector under the action of buoyancy, when no water exists, the channel is opened, and impurities are discharged from the pipe orifice.

The electric control system based on MCU control:

referring to fig. 16, an electric control system of an intelligent water treatment device includes an MCU, a position sensor, and a liquid level sensor;

the position sensor and the liquid level sensor are both connected with the MCU; the lifting mechanism, the liquid inlet valve, the dosing mechanism (or dosing mechanism), the discharge valve and the liquid pump are all controlled by the MCU;

the position sensor is used for detecting the position of the lifting platform or the filter element in the vertical direction;

the liquid level sensor is used for detecting the height of the liquid level in the container;

the MCU has a timing unit therein for controlling the reaction time (e.g., flocculation time).

The MCU performs the following controls:

the water inlet control is realized, the MCU controls the opening of the water inlet valve, and the water inlet is stopped when the liquid level rises to a preset liquid level; when water enters, the medicament for purifying the water and the water to be treated enter the container simultaneously; or the mixture enters the container, so that a liquid inlet valve can be controlled, and the dosing pipe and the wastewater inlet pipe are separated in advance, and the mixing of the medicament and the wastewater is completed only when water enters; the drug is administered by the administration means, and the drug is administered simultaneously when water is added, and the drug is preferably added through a separate tube, and preferably a solution with the drug is administered. Controlling the liquid medicine to enter or stop entering through a valve; or directly into a solid or powdered medicament, not shown.

Controlling the lifting of the filter element: when water enters, the MCU controls the filter element to ascend simultaneously so as to clean the outer wall of the filter element; after the position sensor detects that the filter element rises to a preset highest position, the filter element stops rising; after the preset reaction time is up, the MCU controls the filter element to descend; stopping descending until the lower limit position is reached;

water pumping control: when the filter element descends to a certain set position (such as the lowest position or a certain lower position), the MCU starts the liquid pump to pump water; after the liquid level meter detects that the liquid level is lower than a certain set value or the flow meter detects that the flow is lower than the set value, the MCU closes the liquid pump;

controlling discharged waste: after the liquid level meter detects that the liquid level is lower than a certain set value or the flow meter detects that the flow is lower than the set value, a discharge valve is opened to discharge waste materials; after the preset discharging time, the preset discharging time T2 or the weight sensor detects that the weight of the waste at the bottom of the container is less than the preset value, closing the discharging valve; and restarting the next control period; if the flowmeter is used for detecting the water yield, the flowmeter is arranged at the water outlet pipe and is connected with the MCU.

And (3) controlling the rotation of the filter element: the filter element is a rotary filter element, the lifting platform is provided with a bearing, and a rotating shaft of the filter element is inserted in the bearing; the intelligent water treatment device also comprises a motor and a transmission mechanism; the motor drives the filter element to rotate through the transmission mechanism;

the control executed by the MCU also comprises the control of a motor;

when the filter element rises, the starting motor drives the filter element to rotate, and water ejected from the annular water inlet pipe washes the outer wall of the filter element at the moment so as to enhance the cleaning effect.

The electric control lifting driving mechanism is a hydraulic push rod or an electric push rod.

The MCU is a singlechip, an FPGA, a CPLD, a DSP or an ARM processor.

The intelligent water treatment device also comprises a communication module; the MCU is connected with the communication module and the remote control terminal or the control center through the communication module. If a plurality of intelligent water treatment devices are arranged in one container, the intelligent water treatment devices are synchronously controlled.

The position sensor is at least one of a travel switch, a displacement sensor and a photoelectric sensor.

When the filter element rises, the MCU starting motor drives the filter element to rotate, and water ejected from the annular water inlet pipe washes the outer wall of the filter element at the moment so as to enhance the cleaning effect.

The water treatment process of the intelligent water treatment device is controlled by a remote control method; the MCU is in communication connection with the remote control terminal or the remote control center through the communication module, and remote control is achieved. The remote control terminal can be a PC or a smart phone, and the remote control center is a server.

Electric control system of intelligent water treatment device with rotary filter element (electric control system based on traditional relay protection)

As shown in fig. 14-15, a relay control system for an intelligent water treatment device comprises a water inlet and dosing control circuit, a filter element lifting control circuit, a liquid pump control circuit, and a discharging control circuit;

the relay control system also comprises a start button, a stop button, a first delay relay, a second delay relay, an upper liquid level detection circuit, a lower liquid level detection circuit, an upper limit detection circuit (such as an upper limit switch) and a lower limit detection circuit (such as a lower limit switch);

the first time delay relay is used for controlling the reaction time; the second time delay relay is used for controlling the discharging time;

(1) Water inlet and dosing control circuit

The water inlet control circuit is connected with the starting button, the stopping button, the second delay relay switch, the upper liquid level detection circuit and the water inlet valve relay; when the starting button is pressed down or the second delay relay switch is closed, the water inlet valve is opened; when the stop button is pressed down or the upper liquid level detects that the liquid level reaches the preset upper limit height, closing the water inlet valve;

preferably, when water enters, the dosing control circuit is started to dose; adding a preset medicament according to the preset water inflow, and stopping administration after the medicament is added.

(2) Filter element lifting control circuit

The filter element lifting control circuit is used for driving the lifting platform to lift through the electric control lifting mechanism; the filter element lifting control circuit is connected with the electric control lifting mechanism, the starting button, the stopping button, the upper limit detection circuit, the lower limit detection circuit and the second time delay relay switch; when the start button is pressed, the filter element rises, when the stop button is pressed, the filter element stops acting, the upper limit detection circuit detects that the filter element reaches the upper limit position and stops rising, the lower limit detection circuit detects that the filter element reaches the lower limit position and stops falling, and when the second time delay relay switch acts, the reaction is finished, and the filter element starts falling;

(3) Discharge control circuit

The discharge control circuit is connected with the lower liquid level detection circuit, the second delay relay switch, the discharge valve relay and the second delay relay; when the lower liquid level detection circuit detects a first lower limit liquid level of the liquid level, a discharge valve relay is started to drive a discharge valve to open; and simultaneously starting a second time delay relay; when the second time delay relay switch acts, the discharging is completed, and the discharging control circuit drives the discharging valve relay to lose power so as to close the discharging valve.

The relay control system for the intelligent water treatment device also comprises a filter element rotation control circuit;

the filter element rotation control circuit is used for controlling the motor to rotate or stop rotating through the relay;

the filter element rotation control circuit is connected with the motor power supply relay, the starting button, the stopping button, the second time delay relay switch and the upper limit detection circuit; when the starting button is pressed down or the second delay relay switch is switched off (indicating that discharging is finished), the starting motor drives the motor to be switched on through the motor power supply relay, so that the filter element is driven to rotate; when the stop button is pressed down, or the upper limit detection circuit detects that the filter element rises to the upper limit position, the motor stops rotating through the relay, and the filter element stops rotating.

The upper limit detection circuit and the lower limit detection circuit employ a photoelectric sensor, a magnetic sensor, or a limit switch (a travel switch).

The upper liquid level detection circuit and the lower liquid level detection circuit employ liquid level sensors and comparators (or amplifiers).

The electric control lifting mechanism is an electric push rod or a hydraulic push rod.

The water inlet control circuit, the filter element lifting control circuit, the liquid pump control circuit, the filter element rotation control circuit and the discharging control circuit adopt PLC or discrete logic devices (combined with a NOR gate).

The specific water treatment process is shown in fig. 15.

Water inlet pipe for water treatment device

Referring to fig. 17-19, a water inlet pipe for use in a water treatment device, the body 51 of the water inlet pipe being generally circular; the outer end 54 of the water inlet pipe body is plugged; a plurality of water outlet holes 52 are arranged on the water inlet pipe; the water treatment device is provided with an inner barrel and an outer barrel.

The water outlet hole is positioned on the inner side of the externally-wound pipe body, so that the direction of water ejected from the hole is towards the center (such as radial direction and pointing to the center of a circle), and a certain angle (such as 15 degrees) is cheap, and the inner barrel can be washed by the water in the water inlet process.

The pipe body is annular on the whole, and the inner ring diameter of the pipe body is larger than the outer diameter of the inner barrel.

The pipe body is fixed on the inner wall of the opening of the outer barrel by welding or by a plurality of hooks.

The whole body of the pipe body is in a regular quadrangle, as shown in figure 7, so that the pipe body can be matched with a square filter element; furthermore, the filter element can be deformed in a positive n shape, wherein n is more than or equal to 5 and is matched with the shape of the filter element, so that the function of cleaning the outer wall of the filter element can be better played.

The water outlet holes are arranged at equal intervals.

The diameter range of the water outlet hole is 2-20mm. Depending on the volume of the water treatment apparatus, it is preferable that the diameter of the annular pipe is 2.5mm when the diameter of the annular pipe is 430 mm.

There is also a water inlet pipe without gaps and plugs as described in figure 7.

The inlet tube has the following characteristics:

(1) One end of the pipe body is blocked, and water is discharged through the smaller water outlet hole, so that the water is more uniform than the water discharged from a direct pipe orifice;

(2) The water outlet holes are arranged at equal intervals, so that the water outlet is more uniform;

(3) When adopting annular body, and the apopore orientation is circular, including the lift in-process of bucket (being the filter core), go out water and can erode interior bucket outer wall, play self-cleaning effect.

(4) The whole body adopts an annular or polygonal structure, so that the appearance is more attractive.

In conclusion, the water inlet pipe used in the water treatment device has the advantages of attractive structure and self-cleaning function.

Pre-stage processing apparatus

As shown in fig. 33 to 41, a preceding stage water treatment apparatus having a rotary filter drum comprises a lower frame 1 to 16, an outer drum 1 to 1, a filter drum 1 to 10, a liquid inlet, and a driving mechanism for driving the filter drum to rotate; the lower bracket comprises a frame and a plurality of support legs for supporting the frame; the outer barrel is fixed on the lower bracket; the filter barrel is arranged in the outer barrel; a plurality of filter holes are arranged on the wall of the filter barrel; the filter vat is a rotary filter vat with a main rotating shaft; the outer barrel is provided with a supporting platform, the supporting platform is provided with a front-stage bearing, and a main rotating shaft 1-8 of the filter barrel is inserted on the front-stage bearing; the driving mechanism is arranged on the supporting platform; the driving mechanism comprises driving motors 1-6 and a transmission mechanism; a pollution discharge mechanism is arranged at the bottom of the filter barrel; the sewage discharge mechanism is at least one of a liquid discharge valve or a sewage discharge pump; the diameter of the filter holes is between 0.01mm and 1.5 mm. A water pumping pipe 1-5 for pumping water in the filter barrel is arranged in the filter barrel; the backing stage water treatment equipment with the rotary filter barrel also comprises an aerator pipe; the lower end of the aeration pipe is inserted into the container and used for aerating water in the outer barrel so as to improve the ammonia nitrogen index; the transmission mechanism is a gear transmission mechanism, or the transmission mechanism is a synchronous belt transmission mechanism, a rotating shaft of the driving motor is provided with driving synchronous wheels 1-19, a driving rotating shaft is provided with driven synchronous wheels 1-20, and the driving synchronous wheels and the driven synchronous wheels are in transmission connection through synchronous belts 1-18; the supporting platform is an upper bracket. The upper bracket is also provided with a front-stage bearing, the upper end of the main rotating shaft of the filter barrel is inserted on the front-stage bearing, and the rotation is more stable by adopting double bearings; the liquid inlet is connected with the water inlet pipe. A water pumping pipe 1-5 for pumping water in the filter barrel is arranged in the filter barrel; the main rotating shaft is a hollow rotating shaft with a sealed bottom, and the lower end of the main rotating shaft is inserted to the bottom of the filter barrel and can be butted with the bottom or not contacted with the bottom; the liquid pumping pipe is inserted in the main rotating shaft and extends into the lower end of the main rotating shaft; the outer wall of the lower end of the main rotor is provided with water inlet holes 1-11.

A preceding stage intelligent water treatment system is formed by cascading a plurality of preceding stage water treatment devices; the preceding stage water treatment equipment is the preceding stage water treatment equipment; the cascade refers to that water pumped by a water pumping pipe of the preceding stage water treatment equipment enters an outer barrel of the next stage preceding stage water treatment equipment or enters the outer barrel of the next stage preceding stage water treatment equipment after being buffered by an intermediate pool.

A front-end water treatment device (namely the preceding-stage water treatment equipment) for aquaculture wastewater treatment comprises a lower bracket (1-16), an outer barrel (1-1), a filter vat (1-10), a liquid inlet and a driving mechanism for driving the filter vat to rotate; the lower support comprises a frame and a support mechanism for supporting the frame, wherein the support mechanism is a plurality of support legs or a plurality of support plates or support frames; the outer barrel is arranged in the frame of the lower bracket; the filter barrel is arranged in the outer barrel; a plurality of filter holes are arranged on the wall of the filter barrel; the diameter of the filter holes is between 0.01mm and 1.5 mm; the aperture of the filter holes of the filter barrel is preferably 0.1,0.2,0.5,0.8,1,1.2mm. The filter vat is a rotary filter vat with a main rotating shaft; the outer barrel is provided with a supporting platform, the supporting platform is provided with a front-stage bearing, and a main rotating shaft (1-8) of the filter barrel is inserted in the front-stage bearing; the driving mechanism is arranged on the supporting platform; the driving mechanism comprises driving motors (1-6) and a transmission mechanism; the bottom of the filter barrel is provided with a pollution discharge mechanism; the sewage discharge mechanism is at least one of a liquid discharge valve or a sewage discharge pump; a water pumping pipe (1-5) for pumping water in the filter barrel is arranged in the filter barrel; a liquid level detection module is arranged in the outer barrel and connected with the MCU; or a water pumping pipe (1-5) for pumping water in the filter barrel is arranged in the filter barrel, and a flowmeter is arranged on the water pumping pipe and is connected with the MCU; the outer barrel is in a barrel shape, an elliptical barrel shape or an N-edge barrel shape, and N is an integer more than 5; the outer barrel is of a frame structure or an integrated structure; the frame type structure comprises a lining frame and an outer wrapping filter screen, and the integrated structure is a frameless integrated filter screen structure; the preceding-stage rotary filtering type water treatment device also comprises a water treatment agent adding mechanism for adding a water treatment agent to the water to be treated in the outer barrel; the water treatment agent is flocculant such as ferrous sulfate, etc., and can also be decolorant, etc.; the bottom of the outer barrel is conical, the bottom of the filter barrel is conical, namely funnel-shaped, and the conical shape is conical or square conical. A backing liquid pump connected with the water pumping pipe is arranged on the supporting platform or outside the backing water treatment device. The liquid pump can be not belonging to the fore-stage water treatment equipment with the rotary filter vat, can be externally arranged, and can also be integrated on the bracket, namely the pointing platform; the bottom of the filter vat is provided with a magnetic levitation reverse water collector (9) which is positioned outside the filter vat. The filter barrel at the front stage is in a cylindrical barrel shape (or a cylindrical shape) or a star shape, and the bottom is sharp, preferably the star shape.

Claims

1. A method for treating aquaculture sewage is characterized by comprising the following steps:

step 1: solid-liquid separation;

step 2: filtering;

and 3, step 3: post-stage treatment;

precipitating the filtered water, and carrying out decoloration, sterilization, biochemical treatment or MBR membrane treatment on the filtered water;

the sterilization refers to ultraviolet ray or ozone sterilization;

the biochemical treatment refers to aeration or MBBR treatment;

decolorizing refers to treating water with a decolorizing agent.

2. The aquaculture sewage treatment method of claim 1, wherein the intelligent water treatment equipment performs water treatment in a circulation treatment mode: the filter is implemented once each time the filter element is lifted.

3. The method for treating aquaculture wastewater according to claim 1, wherein the filtration in step 2 is a multi-stage filtration.

4. The aquaculture sewage treatment method of claim 1, wherein the filtration in step 2 is parallel filtration.

5. The aquaculture sewage treatment method of claim 1 wherein the controller is adapted to control operation of the intelligent water treatment facility.

6. The aquaculture sewage treatment method according to claim 1, wherein the filter residue is returned to the step 1 for solid-liquid separation again.

7. The aquaculture sewage treatment method according to claim 1, wherein the intelligent water treatment equipment is used for intelligently filtering the liquid output by the solid-liquid separation equipment; the intelligent water treatment equipment comprises an intelligent dosing module and lifting type filtering equipment; the lifting type filtering equipment comprises a container and a lifting type filter element; the intelligent dosing module is used for adding a water treatment agent into the container; the water entering the lifting filter element enters the next lifting filter equipment or the rear water treatment equipment; the intelligent water treatment equipment is provided with a lifting driving mechanism for driving the lifting filter element and a rotary driving mechanism for driving the lifting filter element to rotate; the intelligent water treatment equipment is also provided with a liquid pump for discharging water in the lifting filter element; the lifting filter element comprises a filter element body and a central rotating shaft; the outer surface of the filter element body is a filter screen (78) with a plurality of filter holes.

8. The aquaculture wastewater treatment method according to claim 7, wherein the lifting type filter element is a star-shaped filter element and comprises a filter element body and a central pipe (61), the outer surface of the filter element body is a filter screen (78) with a plurality of filter holes, and the filter element body comprises at least one star-shaped filter element unit; the star-shaped filter element unit is provided with a central hole, and the central tube is inserted into the central hole so as to fixedly connect the central tube and the filter element body into a whole; the central pipe is provided with a water inlet (77) which is positioned inside the star-shaped filter element unit; the star-shaped filter element unit is a regular N-angle prism-shaped filter element unit or a cylindrical filter element unit with N radial branches, and N is not less than 4,N and is an integer.

9. The method of claim 7, wherein the diameter of the filtration pores is between 0.01 and 1 mm.

10. The aquaculture sewage treatment method according to any one of claims 1 to 9, wherein the water treatment agent is any one or more of PAC, PAM and BAC.