CN114671498A - Quick magnetic coagulation reaction system - Google Patents
Quick magnetic coagulation reaction system Download PDFInfo
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- CN114671498A CN114671498A CN202210180547.9A CN202210180547A CN114671498A CN 114671498 A CN114671498 A CN 114671498A CN 202210180547 A CN202210180547 A CN 202210180547A CN 114671498 A CN114671498 A CN 114671498A
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- reaction tank
- medicine
- stirrer
- magnetic coagulation
- reaction system
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 108
- 230000015271 coagulation Effects 0.000 title claims abstract description 39
- 238000005345 coagulation Methods 0.000 title claims abstract description 39
- 239000003814 drug Substances 0.000 claims abstract description 69
- 238000003756 stirring Methods 0.000 claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000010517 secondary reaction Methods 0.000 claims abstract description 16
- 238000005192 partition Methods 0.000 claims description 27
- 239000011148 porous material Substances 0.000 claims description 2
- 229920002401 polyacrylamide Polymers 0.000 claims 3
- 229940079593 drug Drugs 0.000 claims 1
- 238000009513 drug distribution Methods 0.000 claims 1
- 239000010865 sewage Substances 0.000 abstract description 22
- 239000006247 magnetic powder Substances 0.000 abstract description 13
- 238000000034 method Methods 0.000 description 9
- 230000014759 maintenance of location Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000005189 flocculation Methods 0.000 description 4
- 230000016615 flocculation Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000008021 deposition Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000701 coagulant Substances 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Images
Classifications
-
- 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
Abstract
The invention provides a rapid magnetic coagulation reaction system, which comprises: reaction tank, blender, doser, first agitator and second agitator, wherein: the reaction tank comprises a first-stage reaction tank and a second-stage reaction tank; the first-stage reaction tank is provided with a water inlet and comprises an upper mixing area and a lower mixing area; the water outlet of the mixer is connected with the water inlet of the first-stage reaction tank; the medicine feeder is provided with a PAM medicine feeding port and a medicine outlet, and the medicine outlet is positioned below the through port; the first stirrer is used for stirring the primary reaction tank and comprises an upper stirring part positioned in the upper mixing zone and a lower stirring part positioned in the lower mixing zone; the second stirrer is used for stirring the secondary reaction tank. The invention ensures the efficiency of the magnetic coagulation reaction, reduces the floor area of equipment, and can avoid short flow, so that magnetic powder, medicament and sewage are fully mixed.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a rapid magnetic coagulation reaction system.
Background
The magnetic coagulation water treatment technology adds magnetic powder on the basis of the traditional coagulation technology, so that coagulant, pollutant and magnetic powder are flocculated together to form floc with higher density, and the coagulation effect is improved.
Although the magnetic coagulation technology has been widely applied in recent years and is further developed, the application of the traditional magnetic coagulation equipment in sites with very limited land use is limited, particularly in developed cities, the land cost is higher and higher, and the demand of the magnetic coagulation technology for saving land area is very strong. For the application requirement of ultra-large treatment capacity, faster coagulation reaction is required to further shorten the hydraulic retention time and improve the overall operation efficiency of the system.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a rapid magnetic coagulation reaction system.
The invention provides a rapid magnetic coagulation reaction system, which comprises: reaction tank, blender, doser, first agitator and second agitator, wherein:
the reaction tank forms a first-stage reaction tank and a second-stage reaction tank which are parallel through a first partition, and the first-stage reaction tank and the second-stage reaction tank form circulation at the bottom;
the first-stage reaction tank is provided with a water inlet, an upper mixing area and a lower mixing area which are arranged up and down are formed in the first-stage reaction tank through a second partition, and a through hole for communicating the upper mixing area with the lower mixing area is reserved on the second partition; the secondary reaction tank is provided with a water outlet;
The mixer is provided with a water inlet, a water outlet and a PAC dosing port positioned between the water inlet and the water outlet, and the water outlet of the mixer is connected with the water inlet of the primary reaction tank;
the medicine feeder is provided with a PAM medicine feeding port and a medicine outlet, and the medicine outlet is positioned below the through port;
the first stirrer is used for stirring the primary reaction tank and comprises an upper stirring part positioned in the upper mixing zone and a lower stirring part positioned in the lower mixing zone; the second stirrer is used for stirring the secondary reaction tank.
Preferably, the second partition is funnel-shaped, the maximum caliber end of the second partition faces the upper mixing area, and the minimum caliber end of the second partition is communicated with the upper mixing area and the lower mixing area to form a through opening.
Preferably, the height ratio of the upper mixing area to the lower mixing area is 1.2: 1-1.4: 1 by taking the through hole as a boundary.
Preferably, the upper stirring part adopts an upward flow pushing paddle with an upward flow pushing direction, and the lower stirring part adopts a downward flow pushing paddle with a downward flow pushing direction.
Preferably, the lower stirring part is 300mm-400mm away from the bottom of the secondary reaction tank.
Preferably, the second stirrer comprises a first stirring part and a second stirring part positioned below the first stirring part, the first stirring part and the second stirring part are both positioned below the water discharge opening, and the first stirring part and the second stirring part both adopt downward pushing blades with downward pushing directions.
Preferably, the second stirring part is 300mm-400mm away from the bottom of the secondary reaction tank.
Preferably, the doser comprises a medicine distribution pipe and a medicine delivery pipe, the medicine distribution pipe is of a closed ring structure surrounding the opening for one circle, and the medicine distribution pipe is provided with a plurality of pore channels uniformly distributed in the circumferential direction to form a medicine outlet; one end of the medicine feeding pipe is connected with the medicine replenishing and feeding pipe, and the other end of the medicine feeding pipe forms a PAM medicine feeding port.
Preferably, the medicine outlet is positioned on the lower surface of the medicine distribution pipe.
Preferably, a distance is reserved between the first partition and the bottom of the reaction tank to form circulation.
In the invention, a mixer is arranged at the front end of a reaction tank and used for adding PAC medicament; dividing the reaction tank into a first-stage reaction tank and a second-stage reaction tank, and enabling the first-stage reaction tank to flow through the bottom of the second-stage reaction tank; setting the primary reaction tank as an upper mixing zone and a lower mixing zone, wherein the upper mixing zone is used for coagulation reaction, and the lower mixing zone is added with a PAM medicament for preliminary mixing; the second-stage reaction tank makes the coagulation reaction fully proceed to form compact magnetic floccule. The design mode of the structure ensures the magnetic coagulation reaction efficiency and reduces the floor area of the equipment; the primary reaction tank is designed in a partition mode, so that short flow can be avoided, and magnetic powder, a medicament and sewage are fully mixed; the design of the two-stage reaction tank reduces the number of the first-stage stirring tank and the number of the stirrers, can shorten the hydraulic retention time, reduce the energy consumption of equipment and expand the application scene of the system.
Drawings
Fig. 1 is a schematic structural diagram of a rapid magnetic coagulation reaction system according to the present invention.
Fig. 2 is a bottom view of the reaction tank of the rapid magnetic coagulation reaction system according to the present invention.
Detailed Description
Referring to fig. 1-2, the present invention provides a rapid magnetic coagulation reaction system, including: reaction tank, blender 1, doser 2, first agitator 3 and second agitator 4, wherein: the reaction tank forms a first-stage reaction tank 6 and a second-stage reaction tank 7 which are parallel through a first partition 5, and the first-stage reaction tank 6 and the second-stage reaction tank 7 form circulation at the bottom. Specifically, the method comprises the following steps: a distance is reserved between the first partition 5 and the bottom of the reaction tank to form circulation.
The first-stage reaction tank 6 is provided with a water inlet, the first-stage reaction tank 6 forms an upper mixing area and a lower mixing area which are arranged up and down through a second partition 8, and a through hole 81 for communicating the upper mixing area and the lower mixing area is reserved on the second partition 8; the secondary reaction tank 7 has a water discharge port. The mixer 1 is provided with a water inlet, a water outlet and a PAC dosing port positioned between the water inlet and the water outlet, and the water outlet of the mixer 1 is connected with the water inlet of the primary reaction tank 6. The doser 2 comprises a medicine distribution pipe 21 and a medicine delivery pipe 22, the medicine distribution pipe 21 is positioned below the through hole 81, the medicine distribution pipe 21 is a closed ring structure surrounding the through hole 81 for one circle and is coaxial with the through hole 81, and a plurality of through holes are circumferentially arranged on the medicine distribution pipe 21 to form a medicine outlet; one end of the medicine feeding pipe 22 is connected with the medicine replenishing and feeding pipe 22, and the other end thereof forms a PAM medicine feeding port. The first stirrer 3 is used for stirring the primary reaction tank 6, and the first stirrer 3 comprises an upper stirring part 31 positioned in an upper mixing zone and a lower stirring part 32 positioned in a lower mixing zone; the second stirrer 4 is used for stirring the secondary reaction tank 7.
Specifically, the method comprises the following steps: the upper stirring part 31 adopts an upward plug flow paddle with an upward plug flow direction to drive the water flow in the upper mixing area to turn upwards, and the downward flowing speed of the sewage is delayed, so that the sewage is subjected to sufficient coagulation reaction in the upper mixing area. The lower stirring part 32 adopts downward plug blades with downward plug flow direction (namely, the upper stirring part 31 and the lower stirring part 32 are inclined plane paddles with inclined planes, and the inclined planes of the two paddles are opposite) to drive the water flow in the upper mixing area to turn downwards, so that the deposition of the magnetic powder with high density at the bottom is avoided, and the PAM medicament fed from the doser 2 is driven to flow and mix.
The reaction system comprises the following specific working processes:
sewage flows into the mixer 1 through a water inlet of the mixer 1, a PAC medicament is added at a PAC medicament adding port of the mixer 1, the sewage flows into the primary reaction tank 6 after being preliminarily mixed in the mixer 1, the first stirrer 3 stirs liquid to rotate, magnetic powder is added in an upper mixing zone at the same time, an upper stirring part 31 rotates to generate an upward centrifugal force, the downward flowing sewage mixed with the PAC medicament is driven to turn upwards, the downward flowing speed of the sewage is prevented, the sewage and the magnetic powder are fully mixed, and full coagulation reaction is carried out.
The sewage after mixing gets into the lower mixing area through rivers passageway 7, and PAM medicament is thrown from PAM dosing mouth of PAM doser 2 to flow out in the medicine hole on cloth medicine pipe 21, carry out flocculation reaction with the sewage in the lower mixing area.
Sewage flows into the secondary reaction tank 7 from the bottom of the primary reaction tank 6, and under the stirring action of the second stirrer 4, the sewage is fully mixed and reacted with PAC medicament, PAM medicament and magnetic powder, pollutants form floccules taking the magnetic powder as a core, and finally the floccules flow out through a water outlet to enter a subsequent treatment link, so that the aim of sewage purification is fulfilled.
Further, in the present embodiment, the second agitator 4 includes the first agitating part 41 and the second agitating part 42, and the first agitating part 41 and the second agitating part 42 are arranged up and down, and both are located below the drain opening; the first stirring portion 41 and the second stirring portion 42 both adopt downward pushing blades with downward pushing directions (i.e. the first stirring portion 41 and the second stirring portion 42 are both inclined surface blades with inclined surfaces, and the inclined surfaces of the blades are the same). So as to drive the water in the secondary reaction tank 7 to flow downwards and turn over, and then enhance the effect of pollutants forming flocs taking magnetic powder as cores.
Specifically, the method comprises the following steps: the second stirring part 42 is 300mm-400mm away from the bottom of the secondary reaction tank 7. So as to ensure the effect of downward turning of the water flow.
The same principle is that: the lower stirring part 32 is 300mm-400mm away from the bottom of the secondary reaction tank 7.
In this embodiment, the medicine outlet on the medicine dispensing tube 21 is located on the lower surface of the medicine feeder 21, so that the PAM medicine can be smoothly discharged into the water from the medicine feeding hole of the medicine feeder 2.
In this embodiment, the second partition 8 is in a funnel shape (square funnel shape or conical funnel shape), the largest diameter end of the second partition faces the upper mixing region, and the smallest diameter end of the second partition communicates the upper mixing region and the lower mixing region to form the through opening 81. This kind of structural design who leaks hopper-shaped helps forming the whirl, can avoid rivers along the box direct current and the short stream phenomenon that takes place, increases medicament and sewage mixing contact reaction time, guarantees that the mixing reaction is abundant to promote reaction efficiency.
Specifically, the method comprises the following steps: the height ratio of the upper mixing area to the lower mixing area is 1.2:1 to 1.4:1 by taking the through hole 81 as a boundary line. Specifically, the method comprises the following steps: the height ratio of the upper mixing zone to the lower mixing zone was 1.3: 1.
Specifically, the method comprises the following steps: the included angle between the side wall of the second partition wall 8 and the side wall of the second-stage reaction tank 7 is 120-150 degrees. More specifically, the method comprises the following steps: the included angle between the side wall of the second partition wall 8 and the side wall of the secondary reaction tank 7 is 120 degrees.
In this example, the mixer 1 is a tube mixer.
As can be seen from the above, the mixer 1 is arranged at the front end of the reaction tank and is used for adding PAC medicament; the reaction tank is divided into a first-stage reaction tank 6 and a second-stage reaction tank 7, and the first-stage reaction tank 6 and the bottom of the second-stage reaction tank 7 are communicated; arranging the first-stage reaction tank 6 into an upper mixing zone and a lower mixing zone, wherein the upper mixing zone is used for coagulation reaction, and the lower mixing zone is added with a PAM medicament for preliminary mixing; the second-stage reaction tank 7 makes the coagulation reaction fully proceed to form compact magnetic floccules. The design mode of the structure ensures the magnetic coagulation reaction efficiency and reduces the floor area of the equipment; the primary reaction tank 6 is designed in a partition mode, so that short flow can be avoided, and magnetic powder, a medicament and sewage are fully mixed; the design of the two-stage reaction tank reduces the number of the first-stage stirring tanks and the number of the stirrers, can shorten the hydraulic retention time, reduce the energy consumption of equipment, reduce the floor area of the equipment and expand the application scene of the system. Compared with the prior art, the method has the following advantages:
1. The traditional PAC adding reaction tank is cancelled, two stages of reaction tanks are arranged to finish coagulation and flocculation reactions, the hydraulic retention time is shortened by more than half, and the system floor area is shortened by about 1/3;
2. PAC medicament is added into a mixer at the front end of the reaction tank, and the vortex of the mixer is utilized to mix with sewage, so that the integral retention time of the system is reduced;
3. the first reaction tank is divided into two parts which are communicated up and down by a second partition 8, the upper mixing area is used for mixing sewage of the PAC medicament and magnetic powder for reaction, the lower mixing area is added with the PAM medicament for further flocculation reaction; the through hole 81 at the bottom of the second partition 8 is designed to form a unique water flow channel, so that the short flow phenomenon caused by the direct flow of water along the box body is avoided, and the sufficient mixing reaction is ensured;
4. the upper stirring part 31 positioned in the upper mixing zone applies an upward stirring centrifugal force to the sewage, and delays the downward flowing speed of the sewage, so that the sewage is subjected to a sufficient coagulation reaction in the upper mixing zone; the lower stirring part 32 positioned in the lower mixing area applies downward stirring centrifugal force to the sewage, avoids the deposition of magnetic powder with higher density at the bottom and drives the PAM medicament added from the doser 2 to flow and mix;
5. compared with the traditional magnetic coagulation system, the system has the advantages that a group of stirrers is reduced, and the energy consumption and the cost of equipment are reduced;
6. The coagulation and flocculation reaction is completed by utilizing two stages of reaction tanks on the whole, and the treatment efficiency of the system is improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A rapid magnetic coagulation reaction system is characterized by comprising: reaction tank, blender (1), doser (2), first agitator (3) and second agitator (4), wherein:
the reaction tank forms a first-stage reaction tank (6) and a second-stage reaction tank (7) which are parallel through a first partition (5), and the first-stage reaction tank (6) and the second-stage reaction tank (7) form circulation at the bottom;
the first-stage reaction tank (6) is provided with a water inlet, the first-stage reaction tank (6) forms an upper mixing area and a lower mixing area which are arranged up and down through a second partition (8), and a through hole (81) for communicating the upper mixing area with the lower mixing area is reserved on the second partition (8); the secondary reaction tank (7) is provided with a water outlet;
the mixer (1) is provided with a water inlet, a water outlet and a PAC dosing port positioned between the water inlet and the water outlet, and the water outlet of the mixer (1) is connected with the water inlet of the primary reaction tank (6);
The medicine feeder (2) is provided with a PAM (polyacrylamide) medicine feeding port and a medicine outlet, and the medicine outlet is positioned below the through port (81);
the first stirrer (3) is used for stirring the primary reaction tank (6), and the first stirrer (3) comprises an upper stirring part (31) positioned in an upper mixing zone and a lower stirring part (32) positioned in a lower mixing zone; the second stirrer (4) is used for stirring the secondary reaction tank (7).
2. A rapid magnetic coagulation reaction system according to claim 1, wherein the second partition (8) is funnel-shaped, the largest diameter end of the second partition faces the upper mixing region, and the smallest diameter end of the second partition communicates the upper mixing region and the lower mixing region to form a through opening (81).
3. The rapid magnetic coagulation reaction system according to claim 1, wherein the height ratio of the upper mixing region to the lower mixing region is 1.2:1 to 1.4:1 with the through opening (81) as a boundary.
4. The rapid magnetic coagulation reaction system according to claim 1, wherein the upper stirring part (31) employs an upward-flow-pushing paddle with a flow-pushing direction facing upward, and the lower stirring part (32) employs a downward-flow-pushing paddle with a flow-pushing direction facing downward.
5. The rapid magnetic coagulation reaction system according to claim 1, wherein the lower stirring part (32) is 300mm to 400mm from the bottom of the secondary reaction tank (7).
6. The rapid magnetic coagulation reaction system according to claim 1, wherein the second stirrer (4) comprises a first stirrer part (41) and a second stirrer part (42) positioned below the first stirrer part (41), the first stirrer part (41) and the second stirrer part (42) are both positioned below the water discharge port, and the first stirrer part (41) and the second stirrer part (42) both adopt downward flow pushing blades with downward flow pushing directions.
7. The rapid magnetic coagulation reaction system according to claim 6, wherein the second stirring section (42) is 300mm to 400mm from the bottom of the secondary reaction tank (7).
8. The rapid magnetic coagulation reaction system according to claim 1, wherein the doser (2) comprises a medicine distribution pipe (21) and a medicine delivery pipe (22), the medicine distribution pipe (21) is a closed ring structure surrounding one circle of the opening (81), and the medicine distribution pipe (21) is provided with a plurality of pore channels uniformly distributed in the circumferential direction to form a medicine outlet; one end of the medicine feeding pipe (22) is connected with the medicine replenishing and feeding pipe (22), and the other end of the medicine replenishing and feeding pipe forms a PAM medicine feeding port.
9. The rapid magnetic coagulation reaction system according to claim 8, wherein the drug outlet is located on the lower surface of the drug distribution tube (21).
10. The rapid magnetic coagulation reaction system according to any one of claims 1 to 9, wherein a space is reserved between the first partition (5) and the bottom of the reaction tank to form a flow-through.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210180547.9A CN114671498B (en) | 2022-02-25 | 2022-02-25 | Quick magnetic coagulation reaction system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210180547.9A CN114671498B (en) | 2022-02-25 | 2022-02-25 | Quick magnetic coagulation reaction system |
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| CN114671498A true CN114671498A (en) | 2022-06-28 |
| CN114671498B CN114671498B (en) | 2024-03-26 |
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| CN202210180547.9A Active CN114671498B (en) | 2022-02-25 | 2022-02-25 | Quick magnetic coagulation reaction system |
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| CN102786164A (en) * | 2011-05-19 | 2012-11-21 | 陆文汉 | System for settlement-free physicochemical treatment on water-based ink waste water |
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| CN103708594A (en) * | 2013-12-28 | 2014-04-09 | 太平洋水处理工程有限公司 | High-efficiency dense-medium coagulating sedimentation water treatment process |
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| CN107812398A (en) * | 2017-11-15 | 2018-03-20 | 南通华新环保设备工程有限公司 | It is a kind of efficiently to add sand sedimentation basin |
| KR102157572B1 (en) * | 2020-04-29 | 2020-09-18 | (주)하나엔텍 | Scum and sediment removal apparatus for dust collecting deodorizer |
| CN113562826A (en) * | 2021-08-02 | 2021-10-29 | 浙江众华家纺集团有限公司 | Printing and dyeing wastewater recovery device and waste treatment method thereof |
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2022
- 2022-02-25 CN CN202210180547.9A patent/CN114671498B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102786164A (en) * | 2011-05-19 | 2012-11-21 | 陆文汉 | System for settlement-free physicochemical treatment on water-based ink waste water |
| CN103466763A (en) * | 2013-09-02 | 2013-12-25 | 同济大学 | Method for designing high-efficient coagulation stirring in sewage treatment |
| CN203545755U (en) * | 2013-11-11 | 2014-04-16 | 嘉善绿野环保材料厂(普通合伙) | Variable-frequency intelligent water-treatment plant |
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