CN210559789U

CN210559789U - A processing system that is used for high algae of water purification plant and organic pollution raw water

Info

Publication number: CN210559789U
Application number: CN201921091073.0U
Authority: CN
Inventors: 赵新娟; 孙华林; 于东; 李越; 王秋慧
Original assignee: Tianjin Huamiao Water Supply And Drainage Research Designing Institute Co ltd
Current assignee: Tianjin Water Group Huamiao Planning, Survey and Design Institute Co.,Ltd.
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2020-05-19
Anticipated expiration: 2029-07-12

Abstract

The utility model relates to a treatment system for high algae and organic polluted raw water in a water treatment plant, which comprises an ozone contact tank, an air flotation tank and a carbon sand filter tank which are connected in sequence by pipelines; the ozone contact tank comprises an ozone feeding area and an ozone contact area which are communicated, the air floatation tank comprises a dissolved air contact area and a separation area which are communicated, and a slag discharge area and a clear water area are arranged in the separation area; the charcoal sand filtering pond is including the district of intaking, filtering area and the clear water district that communicates in proper order, the filtering area is from last to being water distribution tank, filter material layer, filter plate filter head and water distribution gas distribution district down in proper order, the upper strata on filter material layer is granule activated carbon layer, and the lower floor is the quartz sand layer. The utility model provides a processing system adopts ozone contact tank, air supporting pond and charcoal sand filtering pond combination mode, has practiced thrift the occupation of land, has reduced the engineering investment to reduce the head loss in the water purification process flow, reduced the water factory operation energy consumption, it is short to have the water treatment procedure, and the treatment effeciency is high, and the structures are few, and area advantage such as little.

Description

A processing system that is used for high algae of water purification plant and organic pollution raw water

Technical Field

The utility model relates to a water treatment technical field, in particular to a processing system that is used for high algae of water purification plant and organic pollution raw water.

Background

The raw water is natural water source collected in nature, including underground water, spring water, reservoir water and the like, and is not subjected to any artificial purification treatment. The water quality of raw water varies according to different water sources, when the problems of algae and organic pollution exist in the raw water, the scheme of pretreatment, conventional treatment and advanced treatment is generally selected for water purification treatment, and the defects of long purification process, more structures, complicated equipment, large occupied area and the like exist.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to the aforesaid is not enough, provides a processing system that is used for high algae of water purification plant and organic pollution raw water.

The utility model discloses a realize through following technical scheme:

a treatment system for high algae and organic pollution raw water of a water treatment plant comprises an ozone contact tank, an air flotation tank and a carbon sand filter tank which are sequentially connected by pipelines; the ozone contact tank comprises an ozone feeding area and an ozone contact area which are communicated, the air floatation tank comprises a dissolved air contact area and a separation area which are communicated, and a slag discharge area and a clear water area are arranged in the separation area; the carbon sand filter is including the district of intaking, filtering area, clear water district and the back flush system that communicate in proper order, the filtering area is from last to being water distribution groove, filter material layer, filter plate filter head and water distribution gas distribution district down in proper order, the upper strata on filter material layer is the granule activated carbon layer, and the lower floor is the quartz sand layer.

Further, a processing system for water purification plant high algae and organic pollution raw water, ozone is thrown and is thrown the district and set up the efflux diffuser, the efflux diffuser is thrown through ozone and is thrown the pipe and be connected with ozone generator.

Further, a processing system for water purification plant high algae and organic pollution raw water, ozone contact tank with set gradually between the air supporting pond and mix pond and flocculation basin, mix the pond with set up the mixer in the flocculation basin respectively.

Furthermore, the treatment system for the high algae and organic polluted raw water in the water treatment plant is characterized in that the mixing tank is provided with a flocculating agent feeding pipe.

Furthermore, the treatment system for the high-algae and organic polluted raw water in the water treatment plant is characterized in that the mixing tank is provided with a coagulant aid adding pipe.

Further, a processing system for water purification plant height algae and organic pollution raw water, dissolve the gas contact zone and set up and dissolve gas release head, dissolve gas release head and connect and dissolve the gas pitcher, the gas distribution district that dissolves the gas pitcher connects the air compressor machine, the water distribution district that dissolves the gas pitcher connects booster pump, booster pump connects the clear water district.

Furthermore, a processing system for water purification plant height algae and organic pollution raw water, the district of intaking is including the inlet channel and the weir of joining in marriage of intaking that communicate in proper order, the play water of the weir of joining in marriage of intaking gets into the water distribution tank.

Furthermore, a processing system for water purification plant high algae and organic pollution raw water, clear water district is including the outlet well, play weir and clear water canal that communicate in proper order, and the clear water canal sets up the outlet pipe.

Furthermore, the treatment system for the high algae and organic polluted raw water in the water purification plant comprises a backwashing water pump and a backwashing air blower, wherein the backwashing air blower is connected to the filter tank through a backwashing air pipe, and the backwashing water pump is connected to the filter tank through a backwashing water pipe.

The utility model has the advantages and effects that:

1. the utility model provides a processing system adopts ozone contact tank, air supporting pond and charcoal sand filtering pond to unite to handle to high algae and organic pollution raw water. The ozone contact tank pre-oxidizes water quality organic matters and pre-kills algae, the organic matters which are difficult to degrade are oxidized into organic matters which are easy to degrade, the air floatation tank removes the algae, the algae can reach more than 95%, the granular active carbon on the upper layer of the carbon sand filter tank can effectively adsorb the organic matters after ozone oxidation, and the quartz sand on the lower layer can effectively intercept turbid matters in raw water, so that the effluent meets the requirements of sanitary Standard for Drinking Water (GB 5749-2006).

2. The utility model provides a processing system adopts ozone contact tank, air supporting pond and charcoal sand filtering pond combination mode, has practiced thrift the occupation of land, has reduced the engineering investment to reduce the head loss in the water purification process flow, reduced the water factory operation energy consumption, it is short to have the water treatment procedure, and the treatment effeciency is high, and the structures are few, and area advantage such as little.

Drawings

Fig. 1 shows a schematic structural diagram of an embodiment of a treatment system for high algae and organically polluted raw water in a water purification plant provided by the present invention.

Description of reference numerals: 1-flow meter well, 11-water inlet pipe, 2-water distribution well, 3-ozone contact tank, 31-ozone adding area, 32-ozone contact area, 33-jet diffuser, 34-ozone adding pipe, 35-ozone generator, 4-mixing tank, 41-flocculating agent adding pipe, 42-first stirrer, 43-dosing room, 5-flocculation tank, 51-second stirrer, 6-air floatation tank, 61-dissolved air contact area, 62-separation area, 63-slag discharge area, 64-clear water area, 65-dissolved air release head, 66-dissolved air tank, 67-booster water pump, 68-air compressor, 69-first sewage discharge pipe, 7-carbon sand filter tank, 71-water distribution and gas distribution area, 72-filter plate filter head, 73-filter material layer, 74-water distribution tank, 75-water inlet channel, 76-water inlet distribution weir, 77-water discharge channel, 78-second sewage discharge pipe, 79-water outlet pipe, 80-back flush blower, 81-back flush water pump, 83-back flush air pipe, 84-back flush water pipe, 85-back flush water tank, 86-clear water channel, 87-water outlet well, 88-water outlet weir and 8-back flush system.

Detailed Description

In order to make the purpose, technical solution and advantages of the present invention clearer, the following drawings in the embodiments of the present invention are combined to perform more detailed description on the technical solution in the embodiments of the present invention. The described embodiments are some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention. The embodiments of the present invention will be described in detail below with reference to the accompanying drawings:

in the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the invention.

Fig. 1 shows a schematic structural diagram of an embodiment of a treatment system for high algae and organically polluted raw water in a water purification plant provided by the present invention. The treatment system comprises an ozone contact tank 3, an air flotation tank 6 and a carbon sand filter tank 7 which are connected in sequence by pipelines. Further, a mixing tank 4 and a flocculation tank 5 are sequentially arranged between the ozone contact tank 3 and the air flotation tank 6, and stirrers (i.e. a first stirrer 42 and a second stirrer 51) are respectively arranged in the mixing tank 4 and the flocculation tank 5. The mixing tank 4 is provided with a flocculating agent feeding pipe 41 communicated with a dosing room 43 and can also be provided with a coagulant aid feeding pipe. The coagulant aid and the flocculating agent can also be mixed together in the dosing room 43 and then fed into the mixing tank 4 through the flocculating agent feeding pipe 41, and the varieties of the flocculating agent and the coagulant aid are selected according to different raw water qualities.

The ozone contact tank 3 comprises an ozone adding area 31 and an ozone contact area 32 which are communicated. Further, the ozone adding area 31 is provided with a jet diffuser 33, and the jet diffuser 33 is connected with an ozone generator 35 through an ozone adding pipe 34. The ozone pre-oxidation is adopted to change the property and the structure of the organic matter, the complex aromatic organic matter is decomposed into oxygen-containing chain organic matter, and part of macromolecular organic matter is converted into micromolecular organic matter, so that the ring-shaped organic matter is opened and broken, and the subsequent process section treatment is facilitated. Meanwhile, the ozone preoxidation can oxidize and decompose various organic or inorganic pollutants in water, has great effects on removing iron, manganese, sulfide, pesticide, synthetic detergent, three substances and color and smell, and has the effects of sterilizing, killing algae and inactivating viruses. Specifically, the adding amount of ozone is 0.5-2mg/L, and ozone gas prepared by an ozone generator 35 is pumped to a jet diffuser 33 through an ozone adding pipe 34 by a water injector and a booster pump matched with the water injector. The effective residence time of the ozone contact zone is 3.0 minutes, and the effective water depth is 6.0 m.

The floatation tank 6 comprises a dissolved air contact area 61 and a separation area 62 which are communicated, and a slag discharge area 63 and a clean water area 64 are arranged in the separation area 62. The slag discharge area 63 is provided with a first sewage discharge pipe 69, and the first sewage discharge pipe 69 is connected to the sludge treatment system. The air-float method for purifying water features that a great deal of fine bubbles are introduced or generated in water to adhere to the particles of impurities to make the specific weight of water lower than that of water, and the water floats to water surface by buoyancy, resulting in separation of solid from liquid. Further, the dissolved air contact area 61 is provided with a dissolved air release head 65, and the dissolved air release head 65 is connected with a dissolved air tank 66. The dissolved air tank 66 includes a water distribution area, a filler area, an air distribution area, and a dissolved air water storage area. The air distribution area of the dissolved air tank 66 is connected with an air compressor 68, the water distribution area of the dissolved air tank 66 is connected with a booster water pump 67, and the booster water pump 67 is connected with the clear water area 64. The dissolved air tank 66 generates dissolved air water and delivers the dissolved air water to the dissolved air contact zone 61 through the dissolved air release head 65. Specifically, the load of the separation area is 10-13m³The reflux ratio is about 10 percent per square meter per hour.

The carbon sand filter 7 comprises a water inlet area, a filtering area, a clear water area and a back washing system which are sequentially communicated, the filtering area comprises a water distribution tank 74, a filter material layer 73, a filter plate and a filter head 72 and a water and gas distribution area 71 from top to bottom, the upper layer of the filter material layer is a granular activated carbon layer, and the lower layer is a quartz sand layer. The upper granular activated carbon can effectively adsorb organic matters after ozone oxidation, and the lower quartz sand can effectively intercept turbid matters in raw water. Further, the water inlet area comprises a water inlet channel 75 and a water inlet distribution weir 76 which are sequentially communicated, the outlet water of the water inlet distribution weir 76 enters the water distribution groove 74, and the inlet water uniformly enters each filter tank. The clear water area comprises a water outlet well 87, a water outlet weir 88 and a clear water channel 86 which are sequentially communicated, and the clear water channel 86 is provided with a water outlet pipe 79. The backwashing system comprises a backwashing blower 80 and a backwashing water pump 81, wherein the backwashing blower 80 is connected to the filter tank through a backwashing air pipe 83, the backwashing water pump 81 is connected to the filter tank through a backwashing water pipe 84, the filter tank is backwashed and drained to a drainage channel 77, the drainage channel 77 is provided with a second drainage pipe 78, and the second drainage pipe 78 is connected to the sludge treatment system. Specifically, the filtering speed of the filtering area is 7-9m/h, the upper layer of the filtering material layer is a 1-1.5 m granular activated carbon layer which is coal granular activated carbon, and the lower layer is a 1-1.5 m sand layer which is homogeneous quartz sand. The carbon sand filter tank is back flushed by air water, and the air flushing strength is 55m³/m²H, water washing strength is less than or equal to 25m³/m²·h。

The work flow of the processing system is as follows:

raw water enters an ozone contact tank 3 after being metered by a flow meter well 1 and a water distribution well 2 through a water inlet pipe 11, ozone is added into an ozone adding area 31 of the ozone contact tank 3, the raw water enters a mixing tank 4 through a pipeline after being in contact oxidation in an ozone contact area 32 of the ozone contact tank 3, a flocculating agent is added into the water inlet of the mixing tank 4, and then the raw water enters a flocculation tank 5 for flocculation (a coagulant aid can be added if necessary). Then enters a dissolved air contact zone 61 of the air flotation tank 6, the returned dissolved air water is fully contacted with raw water in the dissolved air contact zone 61 and then enters a separation zone 62 of the air flotation tank 6, impurity floc in the water floats up to the water surface from bubbles, is discharged to a slag discharge zone through a first sewage discharge pipe 69 to a sludge treatment system by hydraulic power, clear water at the lower layer enters a clear water zone 64 of the air flotation tank 6 and then enters a water inlet channel 75 of the carbon sand filter tank 7 through a pipeline, passes through a water inlet distribution weir 76 to each filter tank, enters water through each water distribution groove 74, flows downwards through a granular activated carbon filter material layer, a quartz sand filter material layer and a filter plate filter head 72 to enter the lower space of the filter tank, and flows out through a water outlet well 87 and a water outlet weir 88 to the clear water channel 86 to. Through detection, the effluent quality of the treatment system can meet and exceed the requirements of sanitary Standard for Drinking Water (GB 5749-2006).

The above embodiments are only used to illustrate the technical solutions of the present invention, and are not used to limit the scope of the present invention. However, all equivalent changes and modifications made within the scope of the present invention should be considered as falling within the scope of the present invention.

Claims

1. A treatment system for high algae and organic pollution raw water of a water treatment plant is characterized by comprising an ozone contact tank (3), an air flotation tank (6) and a carbon sand filter tank (7) which are sequentially connected by pipelines; the ozone contact tank (3) comprises an ozone feeding area (31) and an ozone contact area (32) which are communicated with each other, the air floatation tank (6) comprises a dissolved air contact area (61) and a separation area (62) which are communicated with each other, and a slag discharge area (63) and a clear water area (64) are arranged in the separation area (62); charcoal sand filtering pond (7) are including the district of intaking, filtering area, clear water district and the back flush system that communicates in proper order, the filtering area is from last to being water distribution groove (74), filter material layer (73), filter plate filter head (72) and water distribution gas distribution district (71) down in proper order, the upper strata on filter material layer is granule activated carbon layer, and the lower floor is the quartz sand layer.

2. The system for treating high algae and organic polluted raw water in a water treatment plant according to claim 1, wherein the ozone adding area (31) is provided with a jet diffuser (33), and the jet diffuser (33) is connected with an ozone generator (35) through an ozone adding pipe (34).

3. The system for treating high algae and organically polluted raw water of a water treatment plant according to claim 1, wherein a mixing tank (4) and a flocculation tank (5) are sequentially arranged between the ozone contact tank (3) and the air flotation tank (6), and a stirrer is respectively arranged in the mixing tank (4) and the flocculation tank (5).

4. The system for treating high algae and organically polluted raw water of a water treatment plant according to claim 3, wherein the mixing tank (4) is provided with a flocculant feeding pipe (41).

5. The system for treating high algae and organic polluted raw water of a water treatment plant according to claim 4, wherein the mixing tank (4) is provided with a coagulant aid feeding pipe.

6. The system for treating high algae and organically polluted raw water of a water treatment plant according to claim 1, wherein the dissolved air contact zone (61) is provided with a dissolved air release head (65), the dissolved air release head (65) is connected with a dissolved air tank (66), the air distribution zone of the dissolved air tank (66) is connected with an air compressor (68), the water distribution zone of the dissolved air tank (66) is connected with a booster water pump (67), and the booster water pump (67) is connected with the clean water zone (64).

7. The system for treating high algae and organic polluted raw water of a water treatment plant according to claim 1, wherein the water inlet region comprises a water inlet channel (75) and a water inlet distribution weir (76) which are communicated in sequence, and the outlet water of the water inlet distribution weir (76) enters the water distribution tank (74).

8. The system for treating high algae and organic polluted raw water of a water treatment plant according to claim 1, wherein the clean water area comprises an outlet well (87), an outlet weir (88) and a clean water channel (86) which are communicated in sequence, and the clean water channel (86) is provided with an outlet pipe (79).

9. The system for treating high algae and organically polluted raw water of a water treatment plant according to claim 1, wherein the backwashing system comprises a backwashing water pump (81) and a backwashing air blower (80), the backwashing air blower (80) is connected to the filter tank through a backwashing air pipe (83), and the backwashing water pump (81) is connected to the filter tank through a backwashing water pipe (84).