CN101215052A - Technique and device for treating sewage to reclaimed water - Google Patents
Technique and device for treating sewage to reclaimed water Download PDFInfo
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- CN101215052A CN101215052A CNA2007100606030A CN200710060603A CN101215052A CN 101215052 A CN101215052 A CN 101215052A CN A2007100606030 A CNA2007100606030 A CN A2007100606030A CN 200710060603 A CN200710060603 A CN 200710060603A CN 101215052 A CN101215052 A CN 101215052A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a technique for treating sewage water to reclaimed water and the device thereof, the technique of which includes the following phases: flocculation and dosing phase, fiber filter phase, water distribution phase, integrated module system treatment phase and wine blending phase. The device includes a pipe-line mixer with sequential connection in series, micro eddy flocculation reacting clarification tank, a high effective fabric filter tank, a middle water tank, the integrated module system and a clean water tank. The invention has the advantages that the desalinization of the reverse osmosis device is taken as center, sequentially takes micro eddy flocculation, high effective fabric filtration and ultrafiltration as pretreatment and arranges an original water adjusting tank on the end to secure the stable operation of the reverse osmosis device. Employing mixed water scheme to effectively reduce the manufacturing price and operation cost. The technique provides the technique and the device of the recycling of recirculated cooling sewage water of power plant, the outlet water is taken as the replenishing water of recirculated cooling system of the power plant. The process has the advantages of reasonable design, simple operation and stable work, all the indexes of the outlet water can satisfy the recycling need which has a guiding and referencing meaning for reclaimed water recycling system.
Description
Technical field
What the present invention relates to is the Processes and apparatus of water during sewage disposal is, particularly be that to adopt a kind of that multistage pre-treatment water outlet and reverse osmosis desalination water outlet blend be the Processes and apparatus of middle water with sewage disposal.
Background technology:
China North China, northeast, the Northwest's rich coal resources, but water resources critical shortage, water quality worsens day by day, has become the important factor of restriction China water-deficient area electric power development.In the open cycle cooling water system, recirculated cooling water can produce water loss, and the content of saltiness, chlorion, sulfate radical, calcium ions and magnesium ions and bicarbonate radical is higher, makes the circulating cooling system fouling tendency bigger, can reduce the interchanger heat transfer rate.Thereby water saving and the contradiction that reduces concentration rate have been produced.Be environmental protection and water saving, the cooling sewer that will circulate reclaims and becomes trend.
Membrane separation technique of the prior art is disposed of sewage and is compared with other sewage water treatment methods, have that energy consumption and working cost are low, efficient is high, technology is simple, effluent quality is good, the membrane module concision and compact, be easy to automated operation, advantage such as easy to maintenance, extremely people's favor at present.
Reverse osmosis has the requirement of comparison strictness to its influent quality, the system of a plurality of operations shows, underproof pre-treatment will cause reverse osmosis membrane to be blocked up by dirt rapidly, cause frequent cleaning, produce the water deteriorating water quality, therefore need carry out suitable pre-treatment to former water usually, to remove the suspended substance that exists in the former water, colloid, organism etc., the traditional pretreatment technology of reverse osmosis is:
Recirculated water sewer-circulatior clarifier-valveless filtering pool-more medium filter-activated charcoal filter.
But when former water is the recirculated water sewer, above-mentioned technology can not satisfy the water inlet requirement of reverse osmosis fully, it is the control of pre-treatment and bacterium that recirculated water sewer reuse RO handles maximum problem, and the recirculated water sewer is relatively dirty, and pre-treatment requires just higher relatively.Conventional pretreatment technology is when moving winter, and temperature is lower, and problem of bacteria is not outstanding; When temperature was high to summer, bacterial control all was big problem sometimes in the time of circulating water treatment, can microbiological pollution occur by related reverse osmosis system like this.Make the sterilant of RO if use clorox, note also the dechlorination problem, activated carbon can be used as the dechlorination device, but because after the dechlorination, security personnel's strainer and RO just do not have chlorine residue, may cause problem of bacteria, so generally after security personnel's strainer, regularly add the non-oxidizable sterilant of RO special use, the problem of controlling microbial.
Ultra-filtration technique can effectively address this problem, and ultrafiltration is very high for the clearance of all contaminations matter in the water, and through after the uf processing, the turbidity of water can drop to 0.1～1NTU, and pollution index SDI drops to below 1.
Prior art ultrafiltration/micro-filtration (UF/MF) system pretreatment technology has the following disadvantages: construction costs is than higher; In power plant's operational process, cycle bleeder sewage often mixes, and other produces effluent sewage, makes raw water quality that certain fluctuation take place, and causes integrated film system stability poor stability.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned technology, provide the flocculation of a kind of microvovtex, high-efficiency fiber to filter and ultrafiltration as the multistage pre-treatment of reverse osmosis, with the water outlet behind the fiber filter and the water outlet after the reverse osmosis desalination blend as in a kind of of water be the Processes and apparatus of middle water with sewage disposal.
The technical scheme that solves the problems of the technologies described above is:
A kind of is the technology of middle water with sewage disposal, water outlet of described process using fiber filter and reverse osmosis water outlet blending process, and its technology is by carrying out successively as the next stage:
1). the flocculation dosing stage: sewage, inorganic coagulant and sterilizing agent enter the mixing tank thorough mixing simultaneously, and mixed sewage enters microvovtex flocculation reaction settling pond and carries out flocculation sediment, clarification and oil removal processing, removes most of suspended solid oil slick;
2). the fiber filter stage: enter the high-efficiency fiber filter tank through the water outlet overflow after the flocculation dosing stage processing, further remove suspended solid;
3). the water distribution stage: the water outlet behind bottom, the high-efficiency fiber filter tank outflow filter in above-mentioned fiber filter stage enters intermediate pool, and desired location is provided with upflow tube on intermediate pool top, enters clean water basin through the water outlet of upflow tube;
4). the integrated film system handles stage: by pump 50% water in the intermediate pool is pumped to the intrasystem continuous ultrafiltration device of integrated film from the effusive water outlet of bottom water outlet and to filter, the water outlet after the continuous ultrafiltration device filters enters reverse osmosis unit and carries out desalination;
5). blend the stage: the water outlet in integrated film system after the reverse osmosis unit desalting treatment and the fiber filter water of intermediate pool overflow are blent in clean water basin, and its water outlet is middle water.
A kind of is the used equipment of technology of middle water with sewage disposal, and this equipment comprises: the line mixer that is connected in series successively, microvovtex flocculation reaction settling pond, high-efficiency fiber filter tank, intermediate pool, integrated film system and clean water basin; The water outlet of described line mixer is connected microvovtex flocculation reaction settling pond water-in, the water outlet of microvovtex flocculation reaction settling pond is connected the water-in on top, high-efficiency fiber filter tank, the water outlet that is positioned at bottom, high-efficiency fiber filter tank is connected the water-in of intermediate pool, the water outlet of intermediate pool bottom is connected on the intake pump in the integrated film system, and the water outlet of integrated film system is connected the water inlet of clean water basin.
The invention has the beneficial effects as follows: the present invention is the center with the desalting of reverse osmosis unit, filter with microvovtex flocculation, high-efficiency fiber successively and ultrafiltration as pre-treatment, in that former water equalizing tank is not set, guaranteed the steady running of reverse osmosis unit.The present invention adopts and mixes the water scheme, effectively reduces cost and working cost.This technology provides the Processes and apparatus of circulating cooling sewage from power plants reuse, and water outlet is as the moisturizing of power plant's circulating cooling system, and technological design is reasonable, and simple to operate, and is stable, and the every index of water outlet all can satisfy the reuse requirement; Construction and working cost are low.Design to similarly middle water reuse project has certain guidance and reference with operation.
Description of drawings
Fig. 1 is the present device connection diagram.
" explanation of main sequence number in the accompanying drawing "
1: sewage 1-2,1-3,1-4,1-5,1-6: water outlet 2: inorganic coagulant
3: sterilizing agent 4: line mixer 5: microvovtex flocculation reaction settling pond 5-1: water-in
5-2: water outlet 5-3: flocculation reaction district 5-4: precipitation settling section 5-5: oil removal device
5-6: hollow ball filler 5-7: inclined tube 6: high-efficiency fiber filter tank 6-1: fibrous nodules filler
6-2: vent-pipe 6-3: water-in 6-4: water outlet 7: intermediate pool
7-1: water-in 7-2: upflow tube 7-3: water outlet 7-4: backwashing pump
8: the integrated film 8-1 of system: intake pump 8-2: continuous ultrafiltration device 8-3: reverse osmosis unit
8-4: water outlet 9: clean water basin 9-1: pump 9-2: water-in
9-3: water outlet 10: 10-1 between blower fan: blower fan
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described in further detail.
Fig. 1 is the present device connection diagram.
As shown in Figure 1, the invention provides a kind of is the technology of middle water with sewage disposal, water outlet of described process using fiber filter and reverse osmosis water outlet blending process, and its technology is by carrying out successively as the next stage:
1) the flocculation dosing stage: sewage 1, inorganic coagulant 2 and sterilizing agent 3 enter mixing tank 4 thorough mixing simultaneously, and mixed sewage enters microvovtex flocculation reaction settling pond 5 and carries out flocculation sediment, clarification and oil removal processing, removes most of suspended solid oil slick;
2). the fiber filter stage: enter high-efficiency fiber filter tank 6 through the water outlet 1-2 overflow after the flocculation dosing stage processing, further remove suspended solid;
3). the water distribution stage: the water outlet 1-3 behind the high-efficiency fiber filter tank 6 bottom outflow filters in above-mentioned fiber filter stage enters intermediate pool 7, is provided with upflow tube 7-2 at intermediate pool 7 top desired locations, enters clean water basin 9 through the water outlet 1-6 of upflow tube 7-2;
4). the integrated film system handles stage: will be filtered the continuous ultrafiltration device 8-2 of 50% water in the intermediate pool 7 in water outlet 7-3 effusive water outlet 1-4 in bottom pumps to integrated film system 8 by pump 8-1, the water outlet after continuous ultrafiltration device 8-2 filters enters reverse osmosis unit 8-3 and carries out desalination;
5). blend the stage: the water outlet 1-5 in integrated film system 8 after the reverse osmosis unit 8-3 desalting treatment and the fiber filter water 1-6 of intermediate pool 7 overflows blend in clean water basin 9, and its water outlet 1-7 is middle water.
Described inorganic coagulant 2 be polymerize aluminum chloride, poly-ferric chloride, ferrous sulfate one of them; Described sterilizing agent 3 be dioxide peroxide, clorox, chlorine one of them.
In the described water distribution stage, the water outlet 1-6 that enters clean water basin 9 through upflow tube 7-2 accounts for 50% of intermediate pool 7 water yields.
Above-mentioned technology 1) in the flocculation dosing stage, inorganic coagulant 2 is selected polymerize aluminum chloride for use, sterilizing agent 3 is selected dioxide peroxide for use, enter mixing tank 4 thorough mixing simultaneously and guarantee certain chlorine residue, prevent that bacteria breed from entering microvovtex flocculation reaction settling pond 5 afterwards and carrying out flocculation reaction and clarification, remove most of suspended solid, this section is as the elementary pre-treatment in integrated film system handles stage.
Above-mentioned technology 2) fiber filter enters high-efficiency fiber filter tank 6 through the water outlet 1-2 overflow after flocculation sediment, clarification and the oil removal processing in the stage, further removes suspended solid, and this section is as the secondary pre-treatment in integrated film system handles stage.
Above-mentioned technology 3) the water distribution stage, the water yield that enters clean water basin 9 through the water outlet 1-6 of upflow tube 7-2 in intermediate pool 7 accounts for 50% of the raw waste water water yield, has reached the purpose of water distribution.
In the described water distribution stage, upflow tube 7-2 is set in the intermediate pool 7, fiber filter water outlet 1-6 is here distributed.Backwashing pump 7-4 is installed in the intermediate pool 7 regular backwash is carried out in high-efficiency fiber filter tank 6, adopt the gas of blower fan 10-1 discharge and the water mixing backwash that backwashing pump 7-4 discharges during backwash.
Above-mentioned technology 4) integrated film system handles stage; be with the pre-treatment of continuous ultrafiltration device 8-2 as reverse osmosis unit 8-3; for reverse osmosis unit 8-3 provides protection to greatest extent; the water-quality guideline of its water outlet can satisfy the influent quality requirement of reverse osmosis unit 8-3 fully, ensures the influent quality of reverse osmosis unit 8-3.
As shown in Figure 1, the invention provides a kind of is the technology equipment used of middle water with sewage disposal, and this equipment comprises: the line mixer 4 that is connected in series successively, microvovtex flocculation reaction settling pond 5, high-efficiency fiber filter tank 6, intermediate pool 7, integrated film system 8 and clean water basin 9.The water outlet of described line mixer 4 is connected microvovtex flocculation reaction settling pond 5 water-in 5-1, the water outlet 5-2 of microvovtex flocculation reaction settling pond 5 is connected the water-in 6-3 on 6 tops, high-efficiency fiber filter tank, the water outlet 6-4 that is positioned at 6 bottoms, high-efficiency fiber filter tank is connected the water-in 7-1 of intermediate pool 7, the water outlet 7-3 of intermediate pool 7 bottoms is connected on the intake pump 8-1 in the integrated film system 8, and the water outlet 8-4 of integrated film system 8 is connected the water-in 9-2 of clean water basin 9.
Fibrous nodules filler 6-1 is housed in the described high-efficiency fiber filter tank 6, in the bottom of fibrous nodules filler 6-1 vent-pipe 6-2 is installed, the bottom in high-efficiency fiber filter tank 6 is provided with the backwash device.
Described backwash device is mounted in the backwashing pump 7-4 in the intermediate pool 7, and the water outlet of backwashing pump 7-4 is arranged on the bottom in the high-efficiency fiber filter tank 6.
Described backwash device is mounted between 6 outside blower fans of high-efficiency fiber filter tank the blower fan 10-1 in 10, and blower fan 10-1 blast inlet connects the bottom in the high-efficiency fiber filter tank 6.
At the flocculation reaction district of microvovtex flocculation tank 5 5-3 hollow ball filler 5-6 is installed; At its settling section 5-4 inclined tube 5-7 is installed; Oil removal device 5-5 is installed in the water side.
Below the principle that the present invention relates to is described in further detail:
The present invention includes effect to former water physics and chemistry.Embodiment of the invention inorganic coagulant 2 is selected polymerize aluminum chloride for use, and sterilizing agent 3 is selected dioxide peroxide for use, enters mixing tank 4 thorough mixing simultaneously and guarantees certain chlorine residue, prevents bacteria breed; Enter microvovtex flocculation reaction settling pond 5 afterwards and carry out flocculation reaction and clarification, remove of the elementary pre-treatment of most of this section of suspended solid as integrated film system.
Because water outlet is directly as recirculated cooling water, for improving producing water ratio, reduce the water-quality guideline that cost also can meet the recirculated cooling water make up water, scheme is blent in employing, be the two film system handles water of 50% warp of micro swirl flocculation and efficient filter tank treating water, with remaining 50% micro swirl flocculation and efficient filter tank processing water blended technology.The water outlet of part fiber filter is through integrated film system, and promptly ultra-filtration membrane adds the purpose that reverse-osmosis treated reaches desalination.Continuous ultrafiltration is as the pre-treatment of reverse osmosis process system; the ultra-filtration membrane of macromolecular material is a molecular level to separate impurities in the aqueous solution; diameter is at molecule and the macromole (molecular weight 10,000-100,000) of 50A-2000A (0.05 μ m-0.2 μ m) in its separable liquid phase; can hold back virus and bacteria, colloid, big organic molecule, grease, protein, suspended substance etc.; for reverse osmosis provides protection to greatest extent, the water-quality guideline of its water outlet can satisfy the influent quality requirement of reverse osmosis unit fully.
Claims (8)
1. one kind is the technology of middle water with sewage disposal, it is characterized in that, and water outlet of described process using fiber filter and reverse osmosis water outlet blending process, its technology is by carrying out successively as the next stage:
1) the flocculation dosing stage: sewage (1), inorganic coagulant (2) and sterilizing agent (3) enter mixing tank (4) thorough mixing simultaneously, mixed sewage enters microvovtex flocculation reaction settling pond (5) and carries out flocculation sediment, clarification and oil removal processing, removes most of suspended solid oil slick;
2). the fiber filter stage: enter high-efficiency fiber filter tank (6) through water outlet (1-2) overflow after the flocculation dosing stage processing, further remove suspended solid;
3). the water distribution stage: the water outlet (1-3) behind bottom, high-efficiency fiber filter tank (6) outflow filter in above-mentioned fiber filter stage enters intermediate pool (7), desired location is provided with upflow tube (7-2) on intermediate pool (7) top, enters clean water basin (9) through the water outlet (1-6) of upflow tube (7-2);
4). the integrated film system handles stage: will be filtered the continuous ultrafiltration device (8-2) of 50% water in the intermediate pool (7) in the effusive water outlet of bottom water outlet (7-3) (1-4) pumps to integrated film system (8) by pump (8-1), the water outlet after continuous ultrafiltration device (8-2) filters enters reverse osmosis unit (8-3) and carries out desalination;
5). blend the stage: the water outlet (1-5) in integrated film system (8) after reverse osmosis unit (8-3) desalting treatment is blent in clean water basin (9) with the fiber filter water (1-6) of intermediate pool (7) overflow, and its water outlet (1-7) is middle water.
2. wanting a kind of described in 1 according to right is the technology of middle water with sewage disposal, it is characterized in that, described inorganic coagulant (2) be polymerize aluminum chloride, poly-ferric chloride, ferrous sulfate one of them; Described sterilizing agent (3) be dioxide peroxide, clorox, chlorine one of them.
3. wanting a kind of described in 1 according to right is the technology of middle water with sewage disposal, it is characterized in that in the described water distribution stage, the water outlet (1-6) that enters clean water basin (9) through upflow tube (7-2) accounts for 50% of intermediate pool (7) water yield.
4. wanting a kind of described in 1 according to right is the used equipment of technology of middle water with sewage disposal, it is characterized in that this equipment comprises: the line mixer that is connected in series successively (4), microvovtex flocculation reaction settling pond (5), high-efficiency fiber filter tank (6), intermediate pool (7), integrated film system (8) and clean water basin (9); The water outlet of described line mixer (4) is connected microvovtex flocculation reaction settling pond (5) water-in (5-1), the water outlet (5-2) of microvovtex flocculation reaction settling pond (5) is connected the water-in (6-3) on top, high-efficiency fiber filter tank (6), the water outlet (6-4) that is positioned at bottom, high-efficiency fiber filter tank (6) is connected the water-in (7-1) of intermediate pool (7), the water outlet (7-3) of intermediate pool (7) bottom is connected on the intake pump (8-1) in the integrated film system (8), and the water outlet (8-4) of integrated film system (8) is connected the water-in (9-2) of clean water basin (9).
5. wanting a kind of described in 4 according to right is the equipment of middle water with sewage disposal, it is characterized in that, fibrous nodules filler (6-1) is housed in the described high-efficiency fiber filter tank (6), vent-pipe (6-2) is installed in bottom at fibrous nodules filler (6-1), and the bottom in high-efficiency fiber filter tank (6) is provided with the backwash device.
6. wanting a kind of described in 5 according to right is the equipment of middle water with sewage disposal, it is characterized in that, described backwash device is mounted in the backwashing pump (7-4) in the intermediate pool (7), and the water outlet of backwashing pump (7-4) is arranged on the bottom in the high-efficiency fiber filter tank (6).
7. wanting a kind of described in 5 according to right is the equipment of middle water with sewage disposal, it is characterized in that, described backwash device is mounted in the blower fan (10-1) in (10) between the blower fan of the outside, high-efficiency fiber filter tank (6), and blower fan (10-1) blast inlet is connected the bottom in the high-efficiency fiber filter tank (6).
8. wanting a kind of described in 4 according to right is the equipment of middle water with sewage disposal, it is characterized in that, hollow ball filler (5-6) is installed in the flocculation reaction district of microvovtex flocculation tank (5) (5-3); At its settling section (5-4) inclined tube (5-7) is installed; Oil removal device (5-5) is installed in the water side.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007100606030A CN101215052A (en) | 2007-12-28 | 2007-12-28 | Technique and device for treating sewage to reclaimed water |
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|---|---|---|---|
| CNA2007100606030A CN101215052A (en) | 2007-12-28 | 2007-12-28 | Technique and device for treating sewage to reclaimed water |
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| CN101215052A true CN101215052A (en) | 2008-07-09 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101805081A (en) * | 2010-03-22 | 2010-08-18 | 山东电力工程咨询院有限公司 | Water treatment system of power plant for combining multi-path water into one path of water |
| CN101973655A (en) * | 2010-10-11 | 2011-02-16 | 浦坚 | Water desalting treatment process and device |
| CN102869620A (en) * | 2010-03-18 | 2013-01-09 | 恩威罗斯特里姆解决方案有限公司 | Mobile water filtration unit |
| CN102923875A (en) * | 2012-10-08 | 2013-02-13 | 陕西陕煤黄陵矿业有限公司 | Sewage treatment system and sewage treatment method |
| CN103086523A (en) * | 2011-10-27 | 2013-05-08 | 河南省电力勘测设计院 | Energy-saving type treatment system for power plant circulating water with high condensation ratio by using reclaimed water as water source |
| CN103693771A (en) * | 2012-09-27 | 2014-04-02 | 北京化工大学 | Multi-stage cascaded drinking water adsorption defluorination device and method |
| CN106517665A (en) * | 2016-12-09 | 2017-03-22 | 宜兴市苏嘉环保设备有限公司 | Acid pickling and passivating wastewater treatment system |
| CN106809990A (en) * | 2017-01-23 | 2017-06-09 | 广州资源环保科技股份有限公司 | A kind of effluent purification method |
| CN111072188A (en) * | 2020-02-28 | 2020-04-28 | 福州福龙膜科技开发有限公司 | Integrated water purification and ultrafiltration membrane equipment and treatment method thereof |
| CN114394695A (en) * | 2022-01-25 | 2022-04-26 | 国网河北省电力有限公司电力科学研究院 | Treatment method for recycling domestic sewage of thermal power plant to circulating cooling water system |
-
2007
- 2007-12-28 CN CNA2007100606030A patent/CN101215052A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102869620A (en) * | 2010-03-18 | 2013-01-09 | 恩威罗斯特里姆解决方案有限公司 | Mobile water filtration unit |
| CN102869620B (en) * | 2010-03-18 | 2015-07-29 | 恩威罗斯特里姆解决方案有限公司 | Moveable water filter unit |
| CN101805081A (en) * | 2010-03-22 | 2010-08-18 | 山东电力工程咨询院有限公司 | Water treatment system of power plant for combining multi-path water into one path of water |
| CN101973655A (en) * | 2010-10-11 | 2011-02-16 | 浦坚 | Water desalting treatment process and device |
| CN103086523A (en) * | 2011-10-27 | 2013-05-08 | 河南省电力勘测设计院 | Energy-saving type treatment system for power plant circulating water with high condensation ratio by using reclaimed water as water source |
| CN103693771A (en) * | 2012-09-27 | 2014-04-02 | 北京化工大学 | Multi-stage cascaded drinking water adsorption defluorination device and method |
| CN102923875A (en) * | 2012-10-08 | 2013-02-13 | 陕西陕煤黄陵矿业有限公司 | Sewage treatment system and sewage treatment method |
| CN106517665A (en) * | 2016-12-09 | 2017-03-22 | 宜兴市苏嘉环保设备有限公司 | Acid pickling and passivating wastewater treatment system |
| CN106809990A (en) * | 2017-01-23 | 2017-06-09 | 广州资源环保科技股份有限公司 | A kind of effluent purification method |
| CN111072188A (en) * | 2020-02-28 | 2020-04-28 | 福州福龙膜科技开发有限公司 | Integrated water purification and ultrafiltration membrane equipment and treatment method thereof |
| CN114394695A (en) * | 2022-01-25 | 2022-04-26 | 国网河北省电力有限公司电力科学研究院 | Treatment method for recycling domestic sewage of thermal power plant to circulating cooling water system |
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Open date: 20080709 |