CN107417056B - Regulation and storage tank with automatic purification function and purification method thereof - Google Patents
Regulation and storage tank with automatic purification function and purification method thereof Download PDFInfo
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- CN107417056B CN107417056B CN201710860691.6A CN201710860691A CN107417056B CN 107417056 B CN107417056 B CN 107417056B CN 201710860691 A CN201710860691 A CN 201710860691A CN 107417056 B CN107417056 B CN 107417056B
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- 238000000746 purification Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000003860 storage Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 182
- 238000005189 flocculation Methods 0.000 claims abstract description 85
- 230000016615 flocculation Effects 0.000 claims abstract description 83
- 239000006247 magnetic powder Substances 0.000 claims abstract description 74
- 238000000926 separation method Methods 0.000 claims abstract description 63
- 230000008021 deposition Effects 0.000 claims abstract description 52
- 230000001105 regulatory effect Effects 0.000 claims abstract description 48
- 238000005728 strengthening Methods 0.000 claims abstract description 27
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 23
- 239000002245 particle Substances 0.000 claims abstract description 23
- 231100000719 pollutant Toxicity 0.000 claims abstract description 23
- 230000009471 action Effects 0.000 claims abstract description 8
- 230000005484 gravity Effects 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 47
- 238000001914 filtration Methods 0.000 claims description 33
- 239000000701 coagulant Substances 0.000 claims description 31
- 238000004064 recycling Methods 0.000 claims description 24
- 239000002893 slag Substances 0.000 claims description 22
- 239000013049 sediment Substances 0.000 claims description 18
- 238000011010 flushing procedure Methods 0.000 claims description 16
- 239000003814 drug Substances 0.000 claims description 14
- 238000011084 recovery Methods 0.000 claims description 13
- 239000010802 sludge Substances 0.000 claims description 13
- 239000006148 magnetic separator Substances 0.000 claims description 12
- 239000010865 sewage Substances 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 239000000919 ceramic Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000000356 contaminant Substances 0.000 claims description 4
- 238000001179 sorption measurement Methods 0.000 claims description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 3
- 239000006004 Quartz sand Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910021536 Zeolite Inorganic materials 0.000 claims description 3
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 3
- 239000001110 calcium chloride Substances 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 claims description 3
- 230000003750 conditioning effect Effects 0.000 claims description 3
- 238000006731 degradation reaction Methods 0.000 claims description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 3
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229920002401 polyacrylamide Polymers 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 239000010457 zeolite Substances 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 2
- 238000000151 deposition Methods 0.000 abstract description 39
- 230000000694 effects Effects 0.000 abstract description 10
- 238000004140 cleaning Methods 0.000 abstract description 9
- 238000004062 sedimentation Methods 0.000 abstract description 9
- 239000000126 substance Substances 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000000470 constituent Substances 0.000 description 4
- 230000003311 flocculating effect Effects 0.000 description 4
- 239000003673 groundwater Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/488—Treatment of water, waste water, or sewage with magnetic or electric fields for separation of magnetic materials, e.g. magnetic flocculation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/001—Runoff or storm water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to a regulating reservoir with an automatic purifying function, which comprises the following four parts: the device comprises a magnetic reinforced flocculation device, an eddy current deposition separation device, a regulating reservoir and a purifying system; the magnetic strengthening flocculation device, the vortex deposition separation device and the regulation and storage tank are sequentially connected in order to realize the purification method; the magnetic strengthening flocculation device, the vortex deposition separation device and the regulation and storage tank are sequentially connected. Compared with the traditional regulating and accumulating tank, the system can remove most pollutants in the water body due to the addition of flocculation, and comprises tiny particles and dissolved substances, so that the water quality in the regulating and accumulating tank is purified; due to the effect of vortex sedimentation, the separation effect of particles in the water body is stronger than that of general gravity sedimentation, the water quality in the regulating reservoir is further improved, and meanwhile, the deposition of pollutants in the regulating reservoir is greatly reduced; the improved regulating reservoir greatly reduces the cleaning times of the later regulating reservoir due to the action of the vortex deposition separation part, and meanwhile, the operation management of the regulating reservoir becomes automatic and simple; and the magnetic powder is separated and recycled, so that the system has good environmental and economic benefits.
Description
Technical Field
The invention relates to treatment and storage of initial rainwater, in particular to a regulating and storing tank with an automatic purification function.
Background
The shortage of water resources in China is particularly prominent in areas with cities as centers. In 600 cities in the whole country, more than half of cities are deficient in water, and 108 of the cities are severely deficient in water. On the one hand, these cities suffer from serious water shortage, groundwater resources are over-mined, and groundwater level is lowered year by year; on the other hand, the peak flow of storm flood increases year by year, a large amount of rainwater is discharged outside in urban areas in the rainy season every year, the urban drainage system is overwhelmed, and the storm causes serious waterlogging disasters in a plurality of cities, so that the loss is huge. The rapid development of cities leads to the loss of a large amount of rainwater resources and waterlogging disasters, and thus causes a series of urban ecological environment and social problems, which become important restriction factors for sustainable development of cities. The rainwater can play a role in regulating and supplementing regional water resources and groundwater resources. How to scientifically and reasonably utilize urban rainwater resources and effectively reduce storm runoffs and waterlogging disasters has become a widely-focused problem in recent years.
Because the rainwater or other water runoff needing to be treated carries dirt and impurities deposited on the ground and pipelines, the bottom of the regulating reservoir is inevitably reserved for depositing the impurities after the regulating reservoir is used. If the cleaning is not performed in time, the pollutants are deteriorated, and peculiar smell is generated; and excessive accumulation of sediment can prevent the regulation tank from fully exerting its effect. Therefore, in designing a conditioning reservoir, efficient flushing and removal of bottom sediment must be considered. At present, the sediment at the bottom of the regulating reservoir is cleaned by manual cleaning, hydraulic ejector cleaning, submersible stirrer cleaning and the like. However, the manual cleaning has the defects of high risk, high labor intensity and the like; the hydraulic ejector generates negative pressure in the ejector tube by means of the suction tube and the specially designed nozzle, mixing the sucked air and water, with the disadvantage that: the water storage tank of flushing water needs to be built, the running cost is high, and equipment is easy to pollute and wear when being positioned at the bottom of the water storage tank; submersible agitators are cleaned and, strictly speaking, cannot be used as cleaning equipment, but only as a means to prevent sedimentation at the bottom of the tank, which means cannot remove sedimentation from the reservoir.
For this purpose, other methods are required to be introduced to jointly develop and design a novel regulation pool.
Disclosure of Invention
In order to solve the defects that in the prior art, too much sediment is accumulated in the regulating reservoir to cause rainwater or other water quality regulating reservoirs needing to be treated to fully exert the effects of the rainwater or other water quality regulating reservoirs, the invention provides the regulating reservoir with an automatic purifying function.
The object of the present invention is mainly achieved by the following technical solutions.
The invention relates to a regulating reservoir with an automatic purifying function, which comprises the following four parts: the device comprises a magnetic reinforced flocculation device, an eddy current deposition separation device, a regulating reservoir and a purifying system; the magnetic strengthening flocculation device, the vortex deposition separation device and the regulation and storage tank are sequentially connected in order to realize the purification method;
the magnetic strengthening flocculation device comprises a water inlet, a flocculation main body and a medicament supply device, wherein the water inlet is positioned on the side wall of the flocculation main body, the medicament supply device comprises 3 medicament adding ports arranged on the top of the flocculation main body, and the 3 medicament adding ports are a magnetic powder adding port, an inorganic coagulant adding port and an organic flocculant adding port respectively; the magnetic powder adding port, the inorganic coagulant adding port and the organic flocculant adding port are sequentially arranged on the flocculation main body according to the water flow direction; the water outlet pipeline is positioned on the side wall of the flocculation main body opposite to the water inlet;
the vortex deposition separation device with the back flushing function comprises a shell, a biological filter material layer, a vortex water outlet and a slag discharge port; the biological filter material layers are arranged in the shell at intervals and divide the main body of the separation device into two areas, the area between the biological filter material layers and the shell is a back flushing water inlet area, and the inside of the biological filter material layers is a cyclone filtering area; the backwash water inlet is arranged at the top of the backwash water inlet region; the water outlet pipeline of the flocculation device is inserted into the inner wall of the biological filter material layer to be fixed in a tangential manner with the circumferential body of the biological filter material layer; a guide cylinder is also arranged in the cyclone filtering area, water flow forms vortex between the biological filter material layer and the outer cylinder of the guide cylinder, and a vortex water outlet is arranged at the upper part of the guide cylinder; the bottom of the vortex deposition separation device is provided with a slag discharge port;
the regulating and accumulating tank is connected with the vortex deposition separation device, water body subjected to vortex deposition separation enters the regulating and accumulating tank, the regulating and accumulating tank is provided with an overflow weir, and a water outlet of the regulating and accumulating tank is arranged behind the overflow weir.
The bottom of the side wall of the magnetic strengthening flocculation device opposite to the water inlet is also provided with a magnetic powder recovery port; the purification system further comprises magnetic powder recycling equipment, the magnetic powder recycling equipment comprises a magnetic separator and a recycling pipeline, the magnetic powder recycling port of the magnetic strengthening flocculation device and the slag discharging port of the vortex deposition separation device are communicated with the magnetic separator, and the magnetic powder outlet of the magnetic separator is communicated with the magnetic powder adding port through the recycling pipeline.
Furthermore, the guide cylinder also comprises an inner cylinder and an outer cylinder, the guide cylinder outer cylinder is in a round table shape with a small upper part and a large lower part, an included angle between a round table bus formed by the guide cylinder outer cylinder and a high line of the guide cylinder is smaller than 10 degrees, and the guide cylinder inner cylinder is cylindrical.
Furthermore, the included angle between the round table bus formed by the guide cylinder outer cylinder and the high line is 3 degrees or 5 degrees.
Further, a deflector is arranged in the vortex deposition separation device and positioned below the guide cylinder, so that a sediment collection area is formed below the deflector; the bottom of the guide plate is provided with a downward surface, the bottom of the guide plate is provided with a mud collecting opening, and pollutants deposited on the inner wall of the shell are guided to the mud collecting opening along the downward surface of the guide plate and enter a sediment collecting area through the mud collecting opening.
Further, the magnetic powder adding port extends into the upper part of the flocculation main body, the inorganic coagulant adding port extends into the lower part of the flocculation main body, and a straight baffle plate extending downwards from the top of the flocculation main body is arranged between the magnetic powder adding port and the inorganic coagulant adding port; the organic flocculant adding port extends into the upper part of the flocculation main body; the magnetic strengthening flocculation device also comprises an L-shaped baffle plate, wherein the vertical section of the L-shaped baffle plate is positioned between the inorganic coagulant adding port and the organic flocculant adding port.
Further, the medicament supply device further comprises automatic feeding equipment; the addition amounts of the magnetic powder, the inorganic coagulant and the organic flocculant are automatically controlled according to the flow of water; and/or the adding proportion of the magnetic powder, the inorganic coagulant and the organic flocculant is automatically adjusted according to the water flow.
Further, the magnetic powder is a magnetic powder including ferroferric oxide; the inorganic coagulant is one or a mixture of more of aluminum salt, ferric salt and calcium chloride; the organic flocculant is high molecular organic matters such as polyacrylamide, derivatives thereof and the like.
Further, the vortex deposition separation device also comprises a total water outlet pipeline which is respectively communicated with the vortex water outlet and the filtering water outlet, so that the sewage for removing pollutants and the water after back flushing and filtering are discharged outwards through the total water outlet pipeline; the bottom parts of the magnetic strengthening flocculation device and the vortex deposition separation device are respectively provided with surfaces which are inclined downwards towards the slag discharging opening and the magnetic powder recovery opening.
Further, the vortex deposition separation device is a cylindrical barrel, and the height of the cylindrical barrel is 1.5-3 times of the diameter of the bottom surface of the cylindrical barrel.
Further, the height of the cylindrical barrel is 2 times or 2.5 times the diameter of the bottom surface thereof.
Further, the biological filter material layer comprises an inner layer and an outer layer, wherein the inner layer is a small-particle biological filter material layer, and the outer layer is a large-particle biological filter material layer; the small-particle biological filter material layer is formed by mixing any one or two of quartz sand and microporous ceramic particles, and the large-particle biological filter material layer is formed by mixing any one or more of zeolite, volcanic rock and macroporous ceramic particles; the biological filter material layer is also provided with a filtering water outlet, the filtering water outlet is positioned below the vortex water outlet, the inner wall of the biological filter material layer at the opposite side of the backwash water inlet extends out of the separation device, and the filtering water outlet is also provided with a filtering water outlet valve.
Further, the water outlet pipeline of the flocculation device is obliquely downwards arranged on the shell of the vortex deposition separation device, and the included angle between the water outlet pipeline of the flocculation device and the horizontal plane is smaller than 30 degrees.
Further, the included angle between the water outlet pipeline and the horizontal plane is 5 degrees, 10 degrees or 15 degrees.
A purification method comprising the steps of: magnetic strengthening flocculation, vortex deposition separation, storage in a regulating reservoir and/or purification;
wherein the step of magnetically enhanced flocculation comprises: introducing water into a magnetizing flocculation device from a water inlet (1) of a flocculation main body, and sequentially mixing sewage with added magnetic powder, inorganic flocculant and organic flocculant in the flocculation main body to perform flocculation reaction, wherein the mixing positions and stages of different agents and sewage are different; the water body subjected to the magnetic strengthening flocculation process is tangentially guided to the vortex deposition separation device, so that the water body enters the separation device main body along a mode tangential to the circumference of the vortex deposition separation device;
the vortex deposition separation step comprises: the sewage enters a cyclone filtering area defined by the biological filter material layer (16) tangentially, a vortex is formed in the cyclone filtering area, and a guide cylinder (6) is arranged in the cyclone filtering area to strengthen the vortex rotation; contaminants collected near the inner wall of the biological filter layer (16) are deposited to the sediment collecting area (13) under the action of gravity and discharged from the slag discharging port (15); the water body with the pollutants removed enters the guide cylinder (6) and is discharged from a vortex water outlet (10) of the guide cylinder (6);
when the biological filler layer is blocked or runs for a certain time, a back flushing step is carried out to flush away dirt deposited in the biological filter material layer (16), so that the adsorption and degradation efficiency is improved;
the water separated by vortex deposition is discharged into a regulating reservoir for water storage.
The back flushing step comprises the following steps: clean water is introduced into a back flush water inlet area from a back flush water inlet port (21), the water flows through a biological filter material layer (16), dirt in the biological filter material layer (16) is washed away, the water enters a cyclone filter area, pollutants such as sludge and the like are settled into a sediment collecting area and discharged through a slag discharge port, and clean water at the upper layer is discharged from a filter water outlet (7) after back flush; and/or the purification method further comprises a magnetic powder recovery step, wherein pollutants discharged from a magnetic powder recovery port (25) arranged at the bottom of the magnetic strengthening flocculation device and a slag discharge port (15) of the vortex deposition separation device are conveyed to magnetic powder recovery equipment, and the magnetic separator (17) separates magnetic powder from the pollutants and returns the magnetic powder to the magnetic powder inlet (2) for recycling.
The rainwater or other water needing to be treated is introduced into the magnetic strengthening flocculation device, the vortex deposition separation device, the regulating reservoir and the purifying system, and finally reaches the regulating reservoir through the magnetic strengthening flocculation device and the vortex deposition separation device, so that the deposited sundries are inevitably retained at the bottom of the regulating reservoir after the use, and the manual cleaning is avoided.
Compared with the prior art, the regulating and storing tank with the automatic purifying function has the beneficial effects that:
(1) Compared with the traditional regulating reservoir, the system can remove most pollutants in the water body due to the addition of flocculation, and comprises tiny particles and dissolved substances, so that the water quality in the regulating reservoir is purified;
(2) The flocculation reagent is added automatically, so that the operation and running process of the system is greatly simplified;
(3) Due to the effect of vortex sedimentation, the separation effect of particles in the water body is stronger than that of general gravity sedimentation, the water quality in the regulating reservoir is further improved, and meanwhile, the deposition of pollutants in the regulating reservoir is greatly reduced;
(4) The improved regulating reservoir greatly reduces the cleaning times of the later regulating reservoir due to the action of the vortex deposition separation part, and meanwhile, the operation management of the regulating reservoir becomes automatic and simple.
(5) The magnetic powder is separated and recycled, so that the system has good environmental and economic benefits.
Drawings
Fig. 1 is a schematic front view of an embodiment of the present invention.
Fig. 2 is a schematic top view of an embodiment of the present invention.
In the figure: 1 water inlet, 2 magnetic powder inlet, 3 inorganic coagulant inlet, 4 organic flocculant inlet, 5 shell, 6 guide cylinder, 7 filtering water outlet, 8 inner cylinder, 9 outer cylinder, 10 vortex water outlet, 11 total water outlet pipeline, 12 guide plate, 13 sediment collecting area, 14 mud collecting port, 15 slag discharging port, 16 biological filter layer, 17 magnetic separator, 18 recycling pipeline, 19 small particle biological filter layer, 20 large particle biological filter layer, 21 back flushing water inlet, 22 filtering water outlet valve, 23 straight baffle plate, 24L baffle plate, 25 magnetic powder recovery port, 26-regulating reservoir, 27-overflow weir, 28-regulating reservoir water outlet.
Detailed Description
Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings, and according to these detailed descriptions, those skilled in the art can clearly understand the present invention and can practice the present invention. Features from various embodiments may be combined to obtain new implementations, or substituted for certain features from certain embodiments to obtain further preferred implementations, without departing from the principles of the invention.
The invention relates to a regulating and accumulating tank with an automatic purifying function, which consists of four parts, wherein the first part is a magnetic strengthening flocculation device, the second part is an eddy deposition separation device, the third part is a regulating and accumulating tank, and the fourth part is a purifying system.
The magnetic reinforced flocculation device, the vortex deposition separation device and the regulation and storage tank are sequentially connected;
the magnetic strengthening flocculation device comprises a water inlet 1, a flocculation main body and a medicament supply device, wherein the water inlet 1 is positioned on the side wall of the flocculation main body, the medicament supply device comprises 3 medicament adding ports arranged on the top of the flocculation main body, and the 3 medicament adding ports are a magnetic powder adding port 2, an inorganic coagulant adding port 3 and an organic flocculant adding port 4 respectively. The magnetic powder inlet 2, the inorganic coagulant inlet 3 and the organic flocculant inlet 4 are arranged on the flocculation main body in the water flow direction sequence. The magnetic powder adding port 2 extends into the upper part of the flocculation main body, the inorganic coagulant adding port 3 extends into the lower part of the flocculation main body, a straight baffle plate 23 extending downwards from the top of the flocculation main body is arranged between the magnetic powder adding port 2 and the inorganic coagulant adding port 3, and the height of the straight baffle plate 23 is larger than the height of the inorganic coagulant extending into the flocculation main body. The organic flocculant adding port 4 extends into the upper part of the flocculation main body. The magnetically enhanced flocculation device further comprises an L-shaped baffle plate 24, wherein the vertical section of the L-shaped baffle plate 24 is positioned between the inorganic coagulant adding port and the organic coagulant adding port, the top end of the vertical section is at a certain distance from the top of the flocculation main body so as to enable water to flow to a water outlet pipeline, the water outlet pipeline is positioned on the side wall of the flocculation main body opposite to the water inlet, and the horizontal section of the L-shaped baffle plate 24 is positioned below the water outlet pipeline so as to limit water to flow out through the water outlet pipeline. The straight baffles 23 and the L-shaped baffles serve to define the passage and direction of the water flow, provide adequate path and time for mixing the water flow and the agent, are more evenly mixed, and have more complete flocculation reaction. Firstly, magnetic powder is added into water flow to provide favorable reaction conditions for subsequent flocculation reaction. Then, an inorganic coagulant and an organic coagulant are sequentially added, so that pollutants in water can be coagulated one by one in stages to form floccules. The magnetic powder is, for example, a magnetic powder including ferroferric oxide. The inorganic coagulant may be one or a mixture of several of aluminum salt, ferric salt and calcium chloride. The organic flocculant can be high molecular organic matters such as polyacrylamide, derivatives thereof and the like. The coagulant and the flocculant are added into the water to polymerize the particles which are difficult to precipitate in the water to form a floccule. The flocculating constituent has strong adsorption capacity, can adsorb suspended matters, and can adsorb partial bacteria and soluble substances, and the flocculating constituent is combined with impurities in the water body to form larger flocculating constituent. The flocculating constituent is increased in volume and is sunk through adsorption, so that the pollutants in the water are primarily removed. The magnetic powder can strengthen the reaction inside flocculation, and greatly improves the sedimentation rate of pollutants.
The medicament supply device also comprises automatic feeding equipment, and the addition amounts of the magnetic powder, the inorganic coagulant and the organic flocculant are automatically controlled according to the flow of water. In addition, considering the influence of the water flow speed on the flocculation sedimentation action time, the adding proportion of the magnetic powder, the inorganic coagulant and the organic flocculant is automatically adjusted according to the water flow, so that the intelligent agent adding is realized, the operation and running steps of the magnetic strengthening flocculation device are greatly simplified, and not only is the labor cost saved, but also the running cost is saved.
Further, the water outlet pipeline of the magnetic strengthening flocculation device is obliquely downwards arranged on the shell 5 of the vortex deposition separation device, so that water flow and formed floccules can smoothly flow to the vortex deposition separation device, and blockage is avoided. Preferably, the outlet conduit is at an angle of less than 30 ° to the horizontal, more preferably the angle may be 5 °,10 °, or 15 °. As shown in fig. 2, the water outlet pipeline is tangential to the main body of the vortex deposition separation device in the circumferential direction and is inserted into the main body, and sewage enters the main body in the tangential direction of the separation device shell 5 to form vortex flow.
The vortex deposition separation device with the back flushing function comprises a shell 5, a biological filter material layer 16, a vortex water outlet 10 and a slag discharge port 15. The biological filter material layer 16 is arranged in the shell 5 at intervals and divides the main body of the separation device into two areas, the area between the biological filter material layer 16 and the shell 5 is a back flushing water inlet area, and the inside of the biological filter material layer 16 is a cyclone filtering area. A backwash water inlet 21 is provided at the top of the backwash water inlet zone. The water outlet pipeline of the flocculation device is connected to the biological filter material layer 16 obliquely downwards and is communicated with the cyclone filtering area. The backwash water inlet port 21 and the water outlet conduit are on the same side of the separation device. The water outlet pipeline is inserted into the inner wall of the biological filter material layer 16 in a tangential manner with the circumferential body of the biological filter material layer 16 and is fixed, so that water flows into a rotational flow filtering area in the biological filter material layer 16 to form a vortex state. A guide cylinder 6 is also arranged in the cyclone filtering area, the guide cylinder 6 is positioned at the upper part of the cyclone filtering area, and the corresponding position of the water outlet pipeline. The cartridge 6 is mounted inside the bio-filter layer 16 by a support means (not shown). The guide cylinder 6 comprises an inner cylinder 8, an outer cylinder 9 and a vortex water outlet 10. Annular spaces are respectively formed among the biological filter material layer 16, the guide cylinder outer cylinder 9 and the inner cylinder 8, water enters the cyclone filtering area along the tangential direction of the biological filter material layer 16, a vortex state is formed between the biological filter material layer 16 and the guide cylinder outer cylinder 9 and between the guide cylinder outer cylinder 9 and the inner cylinder 8, and the centrifugal effect of the water in the separation device main body is further increased due to the arrangement of the guide cylinder 6. Under the action of centrifugal force, sludge in the water body is separated, firstly, the sludge is gathered near the inner wall of the biological filter layer 16, and is deposited downwards along the inner wall of the biological filter layer 16 under the action of gravity; the water body with the pollutants removed enters an annular space between the guide cylinder outer cylinder 9 and the guide cylinder inner cylinder 8 from the opening at the lower part of the guide cylinder 6, and moves to the vortex water outlet 10 to be discharged after ascending spirally. The vortex water outlet 10 is positioned at one side of the upper part of the guide cylinder outer cylinder 9, which is far away from the water outlet pipeline. The guide cylinder outer cylinder 9 is in a round table shape with a small upper part and a large lower part, so that water body can perform spiral descending movement in a cyclone filtering area of the vortex deposition separation device, and separated water can enter a space between the guide cylinder outer cylinder and the inner cylinder through the lower part of the guide cylinder 6. Preferably, the included angle between the truncated cone generatrix formed by the guide cylinder outer cylinder 9 and the altitude line is smaller than 10 degrees, more preferably, the included angle can be 3 degrees or 5 degrees. The guide cylinder inner cylinder 8 is cylindrical, so that water body spirally ascends between the guide cylinder inner cylinder 8 and the outer cylinder 9 and is discharged from the vortex water outlet 10.
A deflector 12 is also arranged in the cyclone filtering area, and the deflector 12 is positioned at the lower part of the main body below the guide cylinder 6, so that a sediment collecting area 13 is further formed in the cyclone filtering area below the deflector 12. The bottom of the baffle 12 has a downward surface, and a sludge collection port 14 is formed in the bottom of the baffle, and contaminants deposited on the inner wall of the biological filter layer 16 are guided to the sludge collection port 14 along the downward surface of the baffle 12, and enter the sediment collection area 13 through the sludge collection port 14. A slag discharge port 15 is also provided on the sidewall of the biological filter layer 16 in the sediment collection area 13, and the contaminants deposited in the sediment collection area 13 are discharged from the slag discharge port 15.
Under the centrifugal effect, the pollutants gathered near the inner wall of the biological filter layer 16 are adsorbed in the porous structure of the biological filter layer 16, and in addition, the microorganisms in the biological filter layer 16 have degradation effect, do not release toxic and harmful substances to the water body, and can greatly strengthen the purifying effect of the water body. The biological filter layer 16 is also provided with a filtering water outlet 7, the filtering water outlet 7 is positioned below the vortex water outlet 10, and the inner wall of the biological filter layer 16 at the opposite side of the backwash water inlet 21 extends out of the separation device. A filter water outlet valve 22 is also arranged at the filter water outlet 7.
The vortex deposition separation device further comprises a total water outlet pipeline 11, wherein the total water outlet pipeline 11 is respectively communicated with the vortex water outlet 10 and the filtering water outlet 7, so that sewage for removing pollutants and water after back flushing and filtering are discharged outwards through the total water outlet pipeline 11.
The vortex deposition separation device is a cylindrical cylinder with a height of 1.5 to 3 times, preferably 2 times or 2.5 times the diameter of the bottom surface thereof. The long cylindrical structure enables the guide cylinder with vortex separation to be arranged above the sediment collecting area, and the vortex separation and gravity sedimentation areas are arranged up and down, so that the purifying treatment capacity of the water body is increased, and the occupied area of the purifying system is greatly reduced.
The biological filter layer 16 comprises an inner layer and an outer layer, wherein the inner layer is a small-particle biological filter layer 19, and the outer layer is a large-particle biological filter layer 20. The small-particle biological filter layer 19 is formed by any one or two of quartz sand and microporous ceramic grains, and the large-particle biological filter layer 20 is formed by mixing any one or more of zeolite, volcanic rock and macroporous ceramic grains.
The bottom of the side wall of the magnetic reinforced flocculation device opposite to the water inlet 1 is also provided with a magnetic powder recovery port 25. The bottom parts of the magnetic strengthening flocculation device and the vortex deposition separation device are respectively provided with surfaces which are inclined downwards towards the slag discharging port 15 and the magnetic powder recovery port 25, so that the sludge can flow out under the action of gravity.
The device also comprises a regulating reservoir: the main purpose of the reservoir 26 is to provide a temporary storage space for rainwater to meet the demand of rainwater utilization, and to use the rainwater after the stormwater. The regulating reservoir 26 is provided with the overflow weir 27, the water outlet 28 of the regulating reservoir is arranged at the rear of the overflow weir 27, and in rainy season, the rainwater regulating reservoir can fully embody the idea of sustainable development, and takes the flow of regulating and accumulating storm peak as the core, so that the flood discharge and flood reduction and the flood utilization are better combined with the landscapes, ecological environments and other social functions of the city, and the problem of urban waterlogging is effectively solved; in dry seasons, the sewage after advanced treatment of the sewage treatment plant can be temporarily stored in the rainwater regulating and storing tank, so that the requirement of municipal water is met.
In addition, the purification system with back flushing coagulation cyclone filtration also comprises magnetic powder recycling equipment. The magnetic powder recycling equipment comprises a magnetic separator 17 and a recycling pipeline 18, wherein the magnetic powder recycling port 25 of the magnetic strengthening flocculation device and sludge discharged from the slag discharge port 15 of the vortex deposition separation device are used for separating magnetic powder through the magnetic separator 17. The magnetic powder outlet of the magnetic separator 17 is communicated with the magnetic powder inlet 2 through a recycling pipeline 18, and the separated magnetic powder is returned to the magnetic powder inlet 2 through the recycling pipeline 18 for recycling. The magnetic powder recycling device can be directly connected with the magnetic powder recycling port 25 and the slag discharging port 15, and sludge discharged from the magnetic powder recycling port 25 and the slag discharging port 15 can be conveyed to the magnetic powder recycling device for operation through the conveying device. The magnetic powder is recycled, so that the consumption of the magnetic powder is greatly reduced, and the method has good economic and environmental effects. This part is part of the process of this patent, but in an actual purification system this part may be integral with the first two parts or may be separate.
Although the invention has been described with reference to specific embodiments, those skilled in the art will appreciate that many modifications are possible in the construction and detail of the invention disclosed within the spirit and scope thereof. The scope of the invention is to be determined by the appended claims, and it is intended that the claims cover all modifications that are within the literal meaning or range of equivalents of the technical features of the claims.
Claims (6)
1. The purification method of the regulating reservoir with the automatic purification function is characterized by comprising the following steps of: magnetic strengthening flocculation, vortex deposition separation, storage in a regulating reservoir and purification;
wherein the step of magnetically enhanced flocculation comprises: introducing water into a magnetic strengthening flocculation device from a water inlet (1) of a flocculation main body, and mixing sewage with added magnetic powder, inorganic flocculant and organic flocculant in the flocculation main body in sequence to perform flocculation reaction, wherein the mixing positions and stages of different agents and the sewage are different; the water body subjected to the magnetic strengthening flocculation process is tangentially guided to the vortex deposition separation device, so that the water body enters the separation device main body along a mode tangential to the circumference of the vortex deposition separation device;
the vortex deposition separation step comprises: the sewage enters a cyclone filtering area defined by the biological filter material layer (16) tangentially, a vortex is formed in the cyclone filtering area, and a guide cylinder (6) is arranged in the cyclone filtering area to strengthen the vortex rotation; contaminants collected near the inner wall of the biological filter layer (16) are deposited to the sediment collecting area (13) under the action of gravity and discharged from the slag discharging port (15); the water body with the pollutants removed enters the guide cylinder (6) and is discharged from a vortex water outlet (10) of the guide cylinder (6);
when the biological filler layer is blocked or runs for a certain time, a back flushing step is carried out to flush away dirt deposited in the biological filter material layer (16), so that the adsorption and degradation efficiency is improved; the water body separated by vortex deposition is discharged into a regulating reservoir for water storage;
the magnetic strengthening flocculation device comprises a water inlet (1), a flocculation main body and a medicament supply device, wherein the water inlet (1) is positioned on the side wall of the flocculation main body, the medicament supply device comprises 3 medicament adding ports arranged on the top of the flocculation main body, and the 3 medicament adding ports are a magnetic powder adding port (2), an inorganic coagulant adding port (3) and an organic flocculant adding port (4) respectively; the magnetic powder adding inlet (2), the inorganic coagulant adding inlet (3) and the organic flocculant adding inlet (4) are sequentially arranged on the flocculation main body according to the water flow direction; the water outlet pipeline is positioned on the side wall of the flocculation main body opposite to the water inlet (1); the water outlet pipeline of the flocculation device is obliquely downwards arranged on the shell (5) of the vortex deposition separation device, and the included angle between the water outlet pipeline of the flocculation device and the horizontal plane is smaller than 30 degrees;
the vortex deposition separation device comprises a shell (5), a biological filter material layer (16), a vortex water outlet (10) and a slag discharge port (15); the biological filter material layers (16) are arranged in the shell (5) at intervals, the separation device main body is divided into two areas, a back flushing water inlet area is arranged in the area between the biological filter material layers (16) and the shell (5), and a cyclone filtering area is arranged in the biological filter material layers (16); the backwash water inlet (21) is arranged at the top of the backwash water inlet region; the water outlet pipeline of the flocculation device is inserted into the inner wall of the biological filter material layer (16) to be fixed in a tangential mode with the circumference of the biological filter material layer (16); a guide cylinder (6) is also arranged in the cyclone filtering area, water flow forms vortex between the biological filter material layer (16) and the outer cylinder of the guide cylinder (6), and a vortex water outlet (10) is arranged at the upper part of the guide cylinder (6); the bottom of the vortex deposition separation device is provided with a slag discharge port (15); the biological filter material layer (16) comprises an inner layer and an outer layer, wherein the inner layer is a small-particle biological filter material layer (19), and the outer layer is a large-particle biological filter material layer (20); the small-particle biological filter material layer (19) is formed by any one or two of quartz sand and microporous ceramic particles, and the large-particle biological filter material layer (20) is formed by mixing any one or more of zeolite, volcanic rock and macroporous ceramic particles; the biological filter material layer (16) is also provided with a filter water outlet (7), the filter water outlet (7) is positioned below the vortex water outlet (10), the inner wall of the biological filter material layer (16) at the opposite side of the backwash water inlet (21) extends out of the separation device, and the filter water outlet (7) is also provided with a filter water outlet valve (22);
the bottom of the side wall of the magnetic strengthening flocculation device opposite to the water inlet (1) is also provided with a magnetic powder recovery port (25); the purification system also comprises magnetic powder recycling equipment, the magnetic powder recycling equipment comprises a magnetic separator (17) and a recycling pipeline (18), a magnetic powder recycling port (25) of the magnetic strengthening flocculation device and a slag discharging port (15) of the vortex deposition separation device are communicated with the magnetic separator (17), a magnetic powder outlet of the magnetic separator (17) is communicated with the magnetic powder adding port (2) through the recycling pipeline (18),
the back flushing step comprises the following steps: clean water is introduced into a back flush water inlet area from a back flush water inlet port (21), the water flows through a biological filter material layer (16), dirt in the biological filter material layer (16) is washed away, the water enters a cyclone filter area, pollutants such as sludge and the like are settled into a sediment collecting area and discharged through a slag discharge port, and clean water at the upper layer is discharged from a filter water outlet (7) after back flush; and/or the purification method further comprises a magnetic powder recovery step, wherein pollutants discharged from a magnetic powder recovery port (25) arranged at the bottom of the magnetic strengthening flocculation device and a slag discharge port (15) of the vortex deposition separation device are conveyed to magnetic powder recovery equipment, the magnetic separator (17) separates magnetic powder from the pollutants and returns the magnetic powder to the magnetic powder inlet (2) for recycling,
a deflector (12) is arranged in the vortex deposition separation device, and the deflector (12) is positioned below the guide cylinder (6) so as to form a sediment collection area (13) below the deflector (12); the bottom of the guide plate (12) is provided with a downward surface, the bottom of the guide plate is provided with a sludge collecting opening (14), the pollutants deposited on the inner wall of the shell (5) are guided to the sludge collecting opening (14) along the downward surface of the guide plate (12) and enter a sediment collecting area (13) through the sludge collecting opening (14),
the magnetic powder adding port (2) stretches into the upper part of the flocculation main body, the inorganic coagulant adding port (3) stretches into the lower part of the flocculation main body, and a straight baffle plate (23) which extends downwards from the top of the flocculation main body is arranged between the magnetic powder adding port (2) and the inorganic coagulant adding port (3); an organic flocculant adding port (4) extends into the upper part of the flocculation main body; the magnetically enhanced flocculation device also comprises an L-shaped baffle plate (24), wherein the vertical section of the L-shaped baffle plate (24) is positioned between the inorganic coagulant adding port and the organic coagulant adding port.
2. The method for purifying a reservoir having an automatic purifying function according to claim 1, wherein the agent supply device further includes an automatic charging device; the addition amounts of the magnetic powder, the inorganic coagulant and the organic flocculant are automatically controlled according to the flow of water; and/or the adding proportion of the magnetic powder, the inorganic coagulant and the organic flocculant is automatically adjusted according to the water flow.
3. The method for purifying a conditioning reservoir with an automatic purifying function according to claim 2, wherein the magnetic powder is a magnetic powder including ferroferric oxide; the inorganic coagulant is one or a mixture of more of aluminum salt, ferric salt and calcium chloride; the organic flocculant is polyacrylamide and derivatives thereof.
4. A method for purifying a conditioning and accumulating tank with an automatic purifying function according to claim 3, characterized in that the vortex deposition separation device further comprises a total water outlet pipeline (11), the total water outlet pipeline (11) is respectively communicated with the vortex water outlet (10) and the filtering water outlet (7), thereby the sewage for removing pollutants and the back-flushing filtered water flow are discharged outwards through the total water outlet pipeline (11); the bottom parts of the magnetic strengthening flocculation device and the vortex deposition separation device are respectively provided with surfaces which are inclined downwards towards the slag discharging opening (15) and the magnetic powder recovery opening (25).
5. The method according to claim 4, wherein the vortex deposition separation device is a cylindrical cylinder having a height 1.5 to 3 times the diameter of the bottom surface thereof.
6. The method according to claim 5, wherein the outlet pipe is at an angle of 5 °,10 ° or 15 ° to the horizontal.
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| CN110330177A (en) * | 2019-07-09 | 2019-10-15 | 天津生态城市政景观有限公司 | Water pollution governing system and method based on coupled biological film |
| CN111470647A (en) * | 2020-05-14 | 2020-07-31 | 北京市市政工程设计研究总院有限公司 | Filter tank-ultrafiltration membrane-clean water tank water inlet and outlet system compactly arranged |
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