CN112456696A - Demineralized water production system and production method thereof - Google Patents
Demineralized water production system and production method thereof Download PDFInfo
- Publication number
- CN112456696A CN112456696A CN202011413387.5A CN202011413387A CN112456696A CN 112456696 A CN112456696 A CN 112456696A CN 202011413387 A CN202011413387 A CN 202011413387A CN 112456696 A CN112456696 A CN 112456696A
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- Prior art keywords
- water
- production
- tank
- reverse osmosis
- salt
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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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
- C02F1/4695—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis electrodeionisation
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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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
Abstract
The invention discloses a demineralized water production system and a production method thereof, which comprises a high-salt film water production tank, a production and discharge pump, a raw water tank, a reverse osmosis device and EDI which are sequentially arranged along the flowing direction of liquid, wherein the high-salt film water production tank, the production and discharge pump, the raw water tank, the reverse osmosis device and the EDI are all communicated through pipelines in the close proximity of each other, the water quality of produced water of a high-salt film system can be used as raw water of demineralized water instead of tap water through the high-salt film water production tank, a large amount of tap water can be saved, and therefore, the water resource is saved and the production cost is reduced.
Description
Technical Field
The invention relates to the technical field of water production, in particular to a demineralized water production system and a production method thereof.
Background
In the prior art, the main process of the desalination water system is as follows: tap water, multi-media, an activated carbon filter, primary reverse osmosis, secondary reverse osmosis, EDI and desalted water, a large amount of tap water needs to be consumed every day, the cost of industrial tap water is high, and the water production cost is correspondingly high.
Disclosure of Invention
The present invention aims to solve the above problems and provide a demineralized water production system and a production method thereof, which have the advantages of replacing tap water with high salt film water, saving water resources, reducing production cost, etc., and are described in detail below.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a demineralized water production system which comprises a high-salt film water production tank, a production and discharge pump, a raw water tank, a reverse osmosis device and EDI which are sequentially arranged along the flowing direction of liquid, wherein the high-salt film water production tank, the production and discharge pump, the raw water tank, the reverse osmosis device and the EDI are communicated through pipelines and are adjacent to each other.
Preferably, the reverse osmosis device comprises a first-stage reverse osmosis device and a second-stage reverse osmosis device, and the first-stage reverse osmosis device and the second-stage reverse osmosis device are sequentially arranged along the flowing direction of the raw water tank to the EDI liquid.
Preferably, an isolating valve is arranged on a pipeline connected between the production and discharge pump and the raw water tank.
Preferably, a pH detector for monitoring the pH value of the liquid is arranged in the raw water tank.
Preferably, the capacity of the raw water tank is greater than or equal to that of the high-salt film water-producing tank, and the capacity of the high-salt film water-producing tank is not less than 12 cubic meters.
Preferably, one side of the high-salt membrane water production tank is provided with a membrane cleaning device for cleaning the high-salt membrane water production tank.
The method is applied to the production method of the demineralized water production system, in the process of producing water from the demineralized water, the final produced water obtained by the high-salt membrane system in the high-salt membrane water production tank is subjected to index detection and comparison with tap water, such as COD, ammonia nitrogen, SS, chloride ions, conductivity, residual chlorine and the like, and the comparison can be carried out, the high-salt membrane produced water meets the water quality requirement of the demineralized raw water, then the final produced water obtained by the high-salt membrane system in the high-salt membrane water production tank is pumped into the raw water tank through a pipeline, water liquid in the raw water tank is subjected to membrane filtration through a reverse osmosis device, and finally the final demineralized water is obtained through EDI.
Has the advantages that: 1. the water produced by the high-salt membrane system can be used as raw water for desalting water instead of tap water through the high-salt membrane water production tank, so that a large amount of tap water can be saved, and therefore, the water resource is saved and the production cost is reduced.
2. The isolating valve can realize the fluid separation and circulation between the high-salt film water production tank and the original water tank, and has high opening and closing speed and high safety.
3. The membrane cleaning device can carry out membrane recovery cleaning to the high salt membrane product water tank, ensures that the high salt membrane product water tank can high-efficiently and stably produce water, thereby keeping the stability of water supply.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a system block diagram of the present invention.
The reference numerals are explained below: 1. a high salt film water production tank; 2. a production and discharge pump; 3. a raw water tank; 4. a reverse osmosis unit; 4a, a first-stage reverse osmosis device; 4b, a secondary reverse osmosis device; 5. EDI; 6. a membrane cleaning device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Referring to fig. 1, the present invention provides a demineralized water production system, which comprises a high salt film water production tank 1, a production and discharge pump 2, a raw water tank 3, a reverse osmosis device 4 and an EDI5, which are arranged in sequence along a liquid flow direction, wherein the high salt film water production tank 1, the production and discharge pump 2, the raw water tank 3, the reverse osmosis device 4 and the EDI5 are all communicated with each other through pipelines in the close vicinity of each other.
The reverse osmosis device 4 includes a primary reverse osmosis device 4a and a secondary reverse osmosis device 4b, and the primary reverse osmosis device 4a and the secondary reverse osmosis device 4b are sequentially disposed along a flow direction of the raw water tank 3 to the EDI 5. The cooperation of the first-stage reverse osmosis device 4a and the second-stage reverse osmosis device 4b can realize two-stage membrane filtration of water liquid, greatly improve the reverse osmosis membrane filtration efficiency of the water liquid, and make the final produced water meet the standard requirements.
An isolating valve is arranged on a pipeline connected between the production and discharge pump 2 and the raw water tank 3. The isolating valve can realize the fluid separation and circulation between the high-salt film produced water tank 1 and the original water tank 3, and has high opening and closing speed and high safety.
A PH detector for monitoring the PH value of the liquid is arranged in the raw water tank 3. The pH data of the produced water in the raw water tank 3 is visually monitored, and therefore visual comparison is conducted with the pH data of tap water.
The volume of the raw water tank 3 is larger than or equal to that of the high-salt film water-producing tank 1, and the volume of the high-salt film water-producing tank 1 is not less than 12 cubic meters. So that the raw water tank 3 has a sufficient volume for containing the produced water of the high salt film water producing tank 1.
One side of the high-salt film water production tank 1 is provided with a film cleaning device 6 for performing film recovery cleaning on the high-salt film water production tank. The high-salt film water producing tank 1 is used for ensuring efficient and stable water production.
In the process of producing water from desalted water, the final produced water obtained by the high-salt membrane system in the high-salt membrane water production tank 1 is subjected to index detection and comparison with tap water, such as COD, ammonia nitrogen, SS, chloride ions, conductivity, residual chlorine and the like, and the comparison can obtain that the final produced water from the high-salt membrane meets the water quality requirement of the desalted raw water, then the final produced water obtained by the high-salt membrane water production tank 1 from the high-salt membrane system is pumped into the raw water tank 3 through a pipeline, water liquid in the raw water tank 3 is subjected to membrane filtration through the reverse osmosis device 4, and finally the final desalted water is obtained through EDI5, the high-salt membrane produced water is used as the raw water of desalted water instead of the tap water, and about 250 tons of tap water.
The operational effects of the above-described approach can be displayed according to the following table: table one is a comparison of the indexes of high salt film produced water and tap water, which is as follows:
watch 1
TABLE I shows the final water production index comparison, which is shown in TABLE II
| Analysis index | Standard unit | Original system water sample | Modified water sample |
| Electrical conductivity of | ≤0.2μs/cm | 0.073 | 0.112 |
| SiO2 | ≤20μg/L | 4 | 8 |
| Hardness of | ≤2μmol/L | 0 | 0 |
| Iron | ≤50μg/L | 0 | 0 |
| Copper (Cu) | ≤20μg/L | 0 | 0 |
| Chloride ion | mg/L | 7 | 18 |
The invention has the beneficial effects that: 1. the water produced by the high-salt membrane system can be used as raw water for desalting water instead of tap water through the high-salt membrane water production tank 1, so that a large amount of tap water can be saved, and therefore, the water resource is saved and the production cost is reduced.
2. The isolating valve can realize the fluid separation and circulation between the high-salt film produced water tank 1 and the original water tank 3, and has high opening and closing speed and high safety.
3. Membrane belt cleaning device 6 can produce water tank 1 to the high salt membrane and carry out the membrane and resume the washing, ensures that the high salt membrane produces water tank 1 can high-efficient stable product water to keep the stability of supplying water.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (7)
1. A demineralized water production system which characterized in that: the device comprises a high-salt film production water tank (1), a production and discharge pump (2), a raw water tank (3), a reverse osmosis device (4) and an EDI (5) which are sequentially arranged along the flowing direction of liquid, wherein the high-salt film production water tank (1), the production and discharge pump (2), the raw water tank (3), the reverse osmosis device (4) and the EDI (5) are communicated through pipelines between the adjacent high-salt film production water tank (1), the production and discharge pump (2), the raw water tank (3), the.
2. The demineralized water production system of claim 1 wherein: reverse osmosis unit (4) include one-level reverse osmosis unit (4a) and second grade reverse osmosis unit (4b), and one-level reverse osmosis unit (4a) and second grade reverse osmosis unit (4b) set gradually along former water tank (3) to EDI (5) liquid flow direction between.
3. The demineralized water production system of claim 1 wherein: an isolating valve is arranged on a pipeline connected between the production and discharge pump (2) and the raw water tank (3).
4. The demineralized water production system of claim 1 wherein: and a PH detector for monitoring the PH value of the liquid is arranged in the raw water tank (3).
5. The demineralized water production system of claim 1 wherein: the capacity of the raw water tank (3) is larger than or equal to that of the high-salt film water production tank (1), and the capacity of the high-salt film water production tank (1) is not less than 12 cubic meters.
6. The demineralized water production system of claim 1 wherein: one side of the high-salt film water production tank (1) is provided with a film cleaning device (6) for performing film recovery cleaning on the high-salt film water production tank.
7. The method of claim 1, wherein the method comprises: in the process of producing water from desalted water, the final produced water obtained by the high-salt membrane system in the high-salt membrane water production tank (1) is subjected to index detection and comparison with tap water, such as COD, ammonia nitrogen, SS, chloride ions, conductivity, residual chlorine and the like, and the comparison can be carried out, wherein the water produced by the high-salt membrane meets the water quality requirement of desalted raw water, then the final produced water obtained by the high-salt membrane water production tank (1) from the high-salt membrane system is pumped into the raw water tank (3) through a pipeline, water liquid in the raw water tank (3) is subjected to membrane filtration through a reverse osmosis device (4), and finally the final desalted water is obtained by EDI (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011413387.5A CN112456696A (en) | 2020-12-03 | 2020-12-03 | Demineralized water production system and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011413387.5A CN112456696A (en) | 2020-12-03 | 2020-12-03 | Demineralized water production system and production method thereof |
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| CN112456696A true CN112456696A (en) | 2021-03-09 |
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| CN202011413387.5A Pending CN112456696A (en) | 2020-12-03 | 2020-12-03 | Demineralized water production system and production method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104529021A (en) * | 2015-01-07 | 2015-04-22 | 青岛海大北方节能环保有限公司 | System for preparing demineralized water by recycling reverse osmosis concentrated water |
| CN105399249A (en) * | 2015-11-25 | 2016-03-16 | 南京中电环保工程有限公司 | Advanced municipal sewage treatment device and method |
| CN106746057A (en) * | 2017-02-14 | 2017-05-31 | 青岛海大北方节能环保有限公司 | The boiler feedwater processing method and its device of a kind of high yield water rate |
| CN206886868U (en) * | 2017-06-23 | 2018-01-16 | 北京世纪华扬能源科技有限公司 | Desalting water treatment device for surface water |
| CN108059282A (en) * | 2017-12-25 | 2018-05-22 | 河南万达环保工程有限公司 | Purify water production device and production method |
| CN212894273U (en) * | 2020-12-03 | 2021-04-06 | 上海东石塘再生能源有限公司 | Demineralized water production system |
-
2020
- 2020-12-03 CN CN202011413387.5A patent/CN112456696A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104529021A (en) * | 2015-01-07 | 2015-04-22 | 青岛海大北方节能环保有限公司 | System for preparing demineralized water by recycling reverse osmosis concentrated water |
| CN105399249A (en) * | 2015-11-25 | 2016-03-16 | 南京中电环保工程有限公司 | Advanced municipal sewage treatment device and method |
| CN106746057A (en) * | 2017-02-14 | 2017-05-31 | 青岛海大北方节能环保有限公司 | The boiler feedwater processing method and its device of a kind of high yield water rate |
| CN206886868U (en) * | 2017-06-23 | 2018-01-16 | 北京世纪华扬能源科技有限公司 | Desalting water treatment device for surface water |
| CN108059282A (en) * | 2017-12-25 | 2018-05-22 | 河南万达环保工程有限公司 | Purify water production device and production method |
| CN212894273U (en) * | 2020-12-03 | 2021-04-06 | 上海东石塘再生能源有限公司 | Demineralized water production system |
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