CN115286147A - Desalination water system manufactured by reclaimed water reuse and method - Google Patents
Desalination water system manufactured by reclaimed water reuse and method Download PDFInfo
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- CN115286147A CN115286147A CN202211065888.8A CN202211065888A CN115286147A CN 115286147 A CN115286147 A CN 115286147A CN 202211065888 A CN202211065888 A CN 202211065888A CN 115286147 A CN115286147 A CN 115286147A
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- 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
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- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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- 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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/422—Treatment of water, waste water, or sewage by ion-exchange using anionic exchangers
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- 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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/427—Treatment of water, waste water, or sewage by ion-exchange using mixed beds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
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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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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to the technical field of reclaimed water reuse in the coal chemical industry, in particular to a system and a method for manufacturing desalted water by reclaimed water reuse. The system for producing desalted water by reusing reclaimed water comprises: the first-stage reverse osmosis device, the second-stage reverse osmosis device, the anion exchanger and the mixed ion exchanger are communicated in sequence; the water treated by the primary reverse osmosis device enters a secondary reverse osmosis device, the secondary reverse osmosis device intercepts part of monovalent anions and micro molecules in the water and then enters an anion exchanger, and the anion exchanger carries out ion exchange pretreatment on the monovalent anions in the water and then enters a mixed ion exchanger. The problems of water inlet index deterioration, large reduction of cycle water yield, frequent acid-base regeneration, increased cost and discharge and the like of the mixed ion exchanger caused by using reclaimed water in a desalination water system manufactured by a traditional membrane method are solved.
Description
Technical Field
The invention relates to the technical field of reclaimed water reuse in the coal chemical industry, in particular to a system and a method for manufacturing desalted water by reclaimed water reuse.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
With the development of sewage treatment technology, a large amount of reclaimed water is produced as a byproduct after sewage discharged in the coal chemical production process is subjected to advanced treatment, and the effective utilization of the reclaimed water gradually becomes a difficult problem.
Most enterprises incorporate reclaimed water into a water production system, but the recycling of reclaimed water in coal chemical industry generally adopts a dual-membrane system of ultrafiltration and reverse osmosis, while the desalination water system manufactured by the traditional membrane method adopts the processes of ultrafiltration, reverse osmosis and mixed ion exchanger, and both of the processes use ultrafiltration and reverse osmosis, so that a great amount of permeable membrane monovalent ions and micro molecules in the byproduct reclaimed water cannot be intercepted by ultrafiltration and reverse osmosis of the desalination water system manufactured by the traditional membrane method again, the water inlet index of the mixed ion exchanger is deteriorated, the cycle water yield of the mixed ion exchanger in the desalination water system manufactured by the traditional membrane method is greatly reduced, acid and alkali regeneration is frequent, and the cost and discharge are increased.
Disclosure of Invention
Aiming at the defects in the prior art, the embodiment of the invention aims to provide a system for manufacturing a desalted water by reclaimed water reuse, which solves the problems that when reclaimed water is used in the conventional membrane method for manufacturing the desalted water system, the reclaimed water contains a large amount of permeable membrane monovalent ions and micro molecules, and the large amount of permeable membrane monovalent ions and micro molecules cannot be intercepted by ultrafiltration and reverse osmosis, so that the water inlet index of a mixed ion exchanger is deteriorated, the periodic water yield is greatly reduced, acid and alkali regeneration is frequent, the cost is increased, the discharge amount is increased, and the like.
In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:
a system for producing desalinated water by recycling reclaimed water, comprising: the first-stage reverse osmosis device, the second-stage reverse osmosis device, the anion exchanger and the mixed ion exchanger are sequentially communicated; the water treated by the primary reverse osmosis device enters a secondary reverse osmosis device, the secondary reverse osmosis device intercepts part of monovalent anions and micro molecules in the water and then enters an anion exchanger, and the anion exchanger carries out ion exchange pretreatment on the monovalent anions in the water and then enters a mixed ion exchanger.
In another preferred embodiment of the invention, an ultrafiltration device is further arranged in front of the primary reverse osmosis device and is used for removing small-particle impurities and colloids in raw water.
In another preferred embodiment of the present invention, a self-cleaning filter is further disposed in front of the ultrafiltration device, and the self-cleaning filter is used for removing large-particle impurities in the raw water.
In another preferred embodiment of the invention, the system further comprises a raw water tank, wherein a pipeline is arranged at the bottom of the raw water tank and connected to a raw water pump, and the raw water pump is connected to the self-cleaning filter through an outlet pipeline.
In another preferred embodiment of the invention, the system also comprises a concentrate reverse osmosis device for removing partial molecules and ions in the concentrate, and the primary reverse osmosis device is connected to the concentrate reverse osmosis device through a concentrate pipeline.
In another preferred embodiment of the invention, the system further comprises a decarbonization tower for removing carbon dioxide, and the primary reverse osmosis device and the concentrated water reverse osmosis device are connected to the decarbonization tower through a water production pipeline.
In another preferred embodiment of the present invention, the ion exchanger further comprises a water production tank, and the mixed ion exchanger is connected to the water production tank through a water production pipeline.
The embodiment of the invention also provides a method for producing desalted water by recycling the reclaimed water, which comprises the steps of carrying out secondary reverse osmosis treatment on the water subjected to the primary reverse osmosis treatment, intercepting part of monovalent anions and micro molecules in the water, and then carrying out ion exchange pretreatment on the monovalent anions in the water.
In another preferred embodiment of the present invention, the raw water is filtered of particulate impurities and colloids prior to the primary reverse osmosis treatment.
In another preferred embodiment of the present invention, the carbon dioxide in the removed water is subjected to a secondary reverse osmosis treatment after the primary reverse osmosis treatment.
One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:
1. according to the invention, a secondary reverse osmosis device is added on the basis of manufacturing a desalination water system by a traditional membrane method, the water produced by primary reverse osmosis is subjected to deep reverse osmosis membrane treatment, part of monovalent ions and almost all micro molecules are intercepted and treated again, and the removal rate of the monovalent ions and the micro molecules in the reclaimed water is improved. And most of transmembrane monovalent anions contained in the water produced by the secondary reverse osmosis are subjected to ion exchange pretreatment by adding an anion exchanger, so that the quantity of anions in the water inlet of the mixed ion exchanger is reduced and balanced, the periodic water yield of the mixed ion exchanger is improved, and the acid-base regeneration frequency and the acid-base consumption are reduced.
2. The system solves the problems of large reduction of cycle water yield, frequent acid-base regeneration, cost and discharge increase and the like of the mixed ion exchanger caused by using the reclaimed water in the desalted water manufactured by the traditional membrane method, makes up the defects of the desalted water manufactured by the traditional membrane method, makes it possible to use the byproduct reclaimed water of coal chemical enterprises for preparing a large amount of desalted water, has obvious effects of emission reduction, consumption reduction, yield increase and efficiency improvement, and has very remarkable economic benefit and environmental protection benefit.
3. Carbon dioxide molecules can be partially ionized into carbonate ions, bicarbonate ions and hydrogen ions in water, and the decarbonization tower is arranged to remove the carbon dioxide, so that the carbonate ions, the bicarbonate ions and anion resin in the anion exchanger are prevented from carrying out ion exchange, the water treatment capacity of the anion exchanger is prevented from being influenced, and the periodic water yield of the mixed ion exchanger is improved; meanwhile, the hydrogen ions are prevented from reducing the pH value of water to make the produced water acidic, and the acid-base regeneration frequency and the acid-base consumption are reduced.
Advantages of additional aspects of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic diagram of a system for producing desalinated water by using reclaimed water in accordance with example 1 of the present invention;
in the figure: 1. a raw water tank; 2. a raw water pump; 3. a self-cleaning filter; 4. an ultrafiltration device; 5. a first-stage reverse osmosis device; 6. a secondary reverse osmosis device; 7. a concentrated water reverse osmosis device; 8. an anion exchanger; 9. a mixed ion exchanger; 10. a water production tank; 11. a decarbonizing tower;
the spacing or size between each other is exaggerated to show the location of the locations, and the illustration is for illustrative purposes only.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the invention expressly state otherwise, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, it indicates the presence of the stated features, steps, operations, devices, components, and/or combinations thereof. Term interpretation section: the terms "mounted," "connected," "fixed," and the like in the present invention are to be understood broadly, and for example, they may be fixedly connected, detachably connected, or integrated; the term "coupled" may refer to a mechanical connection, a direct connection, an indirect connection through an intermediary, an internal connection between two elements, or an interaction between two elements, and the term is understood to have a special meaning for those skilled in the art according to the specific situation.
As introduced by the background technology, the existing technology of ultrafiltration, reverse osmosis and mixed ion exchanger adopted by the desalted water system manufactured by the membrane method has the problems that the water inlet index of the mixed ion exchanger is deteriorated, so that the periodic water yield of the mixed ion exchanger in the desalted water system manufactured by the traditional membrane method is greatly reduced, acid and alkali regeneration is frequent, cost and discharge are increased, and the like.
As shown in fig. 1, a system for producing desalted water by recycling reclaimed water comprises: the first-stage reverse osmosis device, the second-stage reverse osmosis device, the anion exchanger and the mixed ion exchanger are communicated in sequence; and the water treated by the primary reverse osmosis device enters a secondary reverse osmosis device, the secondary reverse osmosis device intercepts part of monovalent anions and micro molecules in the water and then enters an anion exchanger, and the anion exchanger carries out ion exchange pretreatment on the monovalent anions in the water and then enters a mixed ion exchanger.
Because the reclaimed water contains a large amount of monovalent ions and micro molecules capable of partially permeating the reverse osmosis membrane, although most of the monovalent ions and micro molecules are intercepted and treated by the primary reverse osmosis device, part of the monovalent ions and micro molecules still permeate the reverse osmosis membrane. According to the invention, a secondary reverse osmosis device is added on the basis of manufacturing a desalted water system by a traditional membrane method, the produced water of primary reverse osmosis is subjected to deep reverse osmosis membrane treatment, part of monovalent ions and almost all micro molecules are intercepted and treated again, and the removal rate of the monovalent ions and the micro molecules in the reclaimed water is improved.
Furthermore, the produced water of the secondary reverse osmosis also contains partial monovalent ions, and the monovalent ions contain a large amount of anions which can be exchanged by anion resin, so that the problem that the produced water of the mixed ion exchanger exceeds the standard in advance and fails is easily caused. According to the invention, the anion exchanger is added to carry out ion exchange pretreatment on most of permeable membrane monovalent anions contained in the secondary reverse osmosis produced water, so that the quantity of anions in the inlet water of the mixed ion exchanger is reduced and balanced, the periodic water yield of the mixed ion exchanger is improved, and the acid-base regeneration frequency and the acid-base consumption are reduced.
Example 1
A system for producing desalinated water by recycling reclaimed water, comprising: raw water tank 1, its bottom sets up pipe connection to raw water pump 2, raw water pump 2 is through outlet pipe connection to self-cleaning filter 3, self-cleaning filter 3 is through outlet pipe connection to ultrafiltration device 4, ultrafiltration device 4 is through outlet pipe connection to one-level reverse osmosis unit 5, one-level reverse osmosis unit 5 is through producing water pipe connection to decarbonization tower 11, one-level reverse osmosis unit 5 is through dense water pipe connection to dense water reverse osmosis unit 7, dense water reverse osmosis unit 7 is through producing water pipe connection to decarbonization tower 11, decarbonization tower 11 is connected to second grade reverse osmosis unit 6, second grade reverse osmosis unit 6 is through producing water pipe connection to anion exchanger 8, anion exchanger 8 is through producing water pipe connection to mixed ion exchanger 9, mixed ion exchanger 9 is through producing water pipe connection to product water tank 10. The anion exchanger is regenerated in vivo, and the inside is filled with 201X 7 strong-base anion resin.
Example 2
The method for using the reclaimed water recycling to manufacture the desalted water system comprises the steps of storing raw water containing a large amount of reclaimed water which is uniformly mixed in a raw water tank 1, enabling the raw water containing the large amount of reclaimed water to automatically flow to a raw water pump 2 through a pipeline, pressurizing the raw water by the raw water pump 2, and then sending the raw water to a raw water pump 2 through an outlet pipelineThe self-cleaning filter 3 is used for removing large particle impurities in raw water and then sending the raw water to an ultrafiltration device 4 through an outlet pipeline, the ultrafiltration device 4 is used for removing small particle impurities and colloids in the raw water and then sending the raw water to a primary reverse osmosis device 5 through an outlet pipeline, the primary reverse osmosis device 5 is used for removing most molecules and ions in the water and then sending the water to a decarbonization tower 11 through a water production pipeline, the residual concentrated water of the primary reverse osmosis device 5 is sent to a concentrated water reverse osmosis device 7 through a concentrated water pipeline, the concentrated water reverse osmosis device 7 is used for removing most molecules and ions in the concentrated water and then sending the water to a decarbonization tower 11 through a water production pipeline, the decarbonization tower 11 is used for removing carbon dioxide in the water and then sending the water to a secondary reverse osmosis device 6, the secondary reverse osmosis device 6 is used for removing part molecules and ions in the water again, the conductivity of the produced water after the secondary reverse osmosis is added is about 10 mu s/cm, the water is sent to an anion exchanger 8 after removing part of anions in the water, the anion exchanger 8 is sent to a mixed ion exchanger 9 after removing the residual trace ions in the water, the effluent index is satisfied that the conductivity of less than 0.2 mu s/cm and the production cycle of the mixed ion exchanger 9, and the produced water is sent to the mixed ion exchanger 10 mu s/cm, and the mixed ion exchanger after the mixed ion exchange tank is added 3 。
Wherein, the large particle impurities refer to solid particle impurities with the diameter of more than 100 microns contained in water. Small particle impurities refer to solid particle impurities with a diameter between 100 nm and 100 microns contained in water, and colloids refer to colloidal dispersions with a diameter between 1 nm and 100 nm contained in water. The molecules refer to organic molecules contained in water, and the content is expressed by COD analysis numerical value. The ion means all anions and cations having a valence of not less than one contained in water.
Comparative example 1
This comparative example differs from example 1 in that no secondary reverse osmosis device and no anion exchanger were provided. The two-stage reverse osmosis is not carried out, only the one-stage reverse osmosis is carried out, the conductivity of the produced water is about 30 mu s/cm, and the cycle water yield is about 3000m 3 。
By contrast, the present invention produces desalination in a conventional membrane processOn the basis of a water system, secondary interception is carried out on partial monovalent anions and micro molecules, and meanwhile, ion exchange pretreatment is carried out on permeable membrane monovalent anions in produced water, so that anions entering a mixed ion exchanger are reduced and balanced, acid-base regeneration frequency and acid-base consumption are reduced, and before a secondary reverse osmosis device and the anion exchanger are additionally arranged, the periodic water yield of the mixed ion exchanger is about 3000m 3 (ii) a After the secondary reverse osmosis device and the anion exchanger are additionally arranged, the periodic water yield of the mixed ion exchanger is about 30000m 3 The periodic water yield is increased by about 10 times, and the periodic water yield and the service life of the mixed ion exchanger are improved.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. A desalination water system manufactured by recycling reclaimed water is characterized by comprising: the first-stage reverse osmosis device, the second-stage reverse osmosis device, the anion exchanger and the mixed ion exchanger are sequentially communicated;
and the water treated by the primary reverse osmosis device enters a secondary reverse osmosis device, the secondary reverse osmosis device intercepts part of monovalent anions and micro molecules in the water and then enters an anion exchanger, and the anion exchanger carries out ion exchange pretreatment on the monovalent anions in the water and then enters a mixed ion exchanger.
2. The system for producing desalinated water by recycling reclaimed water according to claim 1, wherein an ultrafiltration device is further provided in front of the primary reverse osmosis device, and the ultrafiltration device is used for removing small-particle impurities and colloids in raw water.
3. The system for producing desalinated water by reusing reclaimed water according to claim 2, wherein a self-cleaning filter for removing large-particle impurities in raw water is further provided in front of the ultrafiltration device.
4. The system for producing desalinated water by recycling reclaimed water according to claim 3, further comprising a raw water tank, wherein a pipe is provided at the bottom of the raw water tank and connected to a raw water pump, and the raw water pump is connected to the self-cleaning filter through an outlet pipe.
5. The system for producing desalinated water by reusing reclaimed water according to claim 1, further comprising a concentrate reverse osmosis apparatus for removing partial molecules and ions in the concentrate, wherein the primary reverse osmosis apparatus is connected to the concentrate reverse osmosis apparatus through a concentrate pipe.
6. The system for producing desalinated water by using reclaimed water as claimed in claim 5, further comprising a decarbonization tower for removing carbon dioxide, wherein the primary reverse osmosis device and the concentrated water reverse osmosis device are connected to the decarbonization tower through a water production pipeline.
7. The system for producing a desalinated water by recycling reclaimed water according to claim 1, further comprising a water production tank, wherein the mixed ion exchanger is connected to the water production tank through a water production pipe.
8. The method for producing desalted water by recycling reclaimed water from a reclaimed water manufacturing desalinating water system according to any one of claims 1 to 7, wherein the water subjected to the primary reverse osmosis treatment is subjected to a secondary reverse osmosis treatment to intercept a part of monovalent anions and micro molecules in the water, and then the monovalent anions in the water are subjected to an ion exchange pretreatment.
9. The method for producing desalted water by recycling reclaimed water according to claim 8, wherein particulate impurities and colloids in the raw water are filtered before the first-stage reverse osmosis treatment.
10. The method for producing desalted water by recycling reclaimed water according to claim 8, wherein the carbon dioxide in the desalted water is removed after the first-stage reverse osmosis treatment and then the second-stage reverse osmosis treatment is performed.
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| CN202211065888.8A CN115286147A (en) | 2022-09-01 | 2022-09-01 | Desalination water system manufactured by reclaimed water reuse and method |
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| CN202211065888.8A CN115286147A (en) | 2022-09-01 | 2022-09-01 | Desalination water system manufactured by reclaimed water reuse and method |
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Citations (6)
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| CN1955119A (en) * | 2005-10-28 | 2007-05-02 | 中国电力工程顾问集团华东电力设计院 | Preparation device and method of first-stage reverse osmosis after chemical desalt optimization pure water |
| US20080277344A1 (en) * | 2007-05-11 | 2008-11-13 | Arup K. Sengupta | Brackish and sea water desalination using a hybrid ion exchange-nanofiltration process |
| CN202465440U (en) * | 2012-03-26 | 2012-10-03 | 新疆宜化化工有限公司 | Water treatment system |
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| CN207685025U (en) * | 2017-12-15 | 2018-08-03 | 内蒙古大唐国际托克托发电有限责任公司 | Water warfare reclaiming system in a kind of pharmaceutical factory |
| CN209602295U (en) * | 2018-12-26 | 2019-11-08 | 徐州天裕燃气发电有限公司 | A kind of reverse osmosis and ion desalting system |
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2022
- 2022-09-01 CN CN202211065888.8A patent/CN115286147A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1955119A (en) * | 2005-10-28 | 2007-05-02 | 中国电力工程顾问集团华东电力设计院 | Preparation device and method of first-stage reverse osmosis after chemical desalt optimization pure water |
| US20080277344A1 (en) * | 2007-05-11 | 2008-11-13 | Arup K. Sengupta | Brackish and sea water desalination using a hybrid ion exchange-nanofiltration process |
| CN202465440U (en) * | 2012-03-26 | 2012-10-03 | 新疆宜化化工有限公司 | Water treatment system |
| CN102942276A (en) * | 2012-12-13 | 2013-02-27 | 山西太钢不锈钢股份有限公司 | Boiler feedwater treatment method and treatment system related to reuse of reclaimed water |
| CN207685025U (en) * | 2017-12-15 | 2018-08-03 | 内蒙古大唐国际托克托发电有限责任公司 | Water warfare reclaiming system in a kind of pharmaceutical factory |
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