CN214571274U - Two-stage RO + EDI desalination water system - Google Patents
Two-stage RO + EDI desalination water system Download PDFInfo
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- CN214571274U CN214571274U CN202023104017.1U CN202023104017U CN214571274U CN 214571274 U CN214571274 U CN 214571274U CN 202023104017 U CN202023104017 U CN 202023104017U CN 214571274 U CN214571274 U CN 214571274U
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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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Abstract
The two-stage RO + EDI desalination water system comprises a pretreatment system, a reverse osmosis system and an EDI system, wherein the pretreatment system comprises a raw water tank, a multi-media filter a, a multi-media filter b, an activated carbon filter a, an activated carbon filter b and a purified water tank; the reverse osmosis system comprises a primary RO security filter, a primary RO device, a primary RO water tank, a secondary RO security filter, a secondary RO device and a secondary RO water tank; the EDI system comprises an EDI cartridge filter, an EDI device, a terminal precision filter, a demineralized water tank and a demineralized water pump. The invention adopts a multi-medium filter and an activated carbon filter as a pretreatment system. Has the characteristics of good effluent quality, large permeability and the like. The suspended solid and the colloidal silica of aquatic can further be got rid of to other impurity such as the material organic matter that adds the macromolecule, and quality of water after the preliminary treatment reaches the requirement that reverse osmosis intake, effectively reduces the SDI value more, reduces removal pressure for reverse osmosis, can effectively prolong reverse osmosis membrane life-span.
Description
Technical Field
The invention belongs to the technical field related to water treatment, and particularly relates to a two-stage RO + EDI demineralized water system.
Background
With the development of science and technology and the attention of people to the water treatment industry, related processes and equipment in the water treatment industry have been developed greatly in recent years. The reverse osmosis membrane separation technology is a main method for water treatment, has the advantages of economy, high efficiency, simple operation, easy automation and the like which are incomparable with other traditional technologies, and is widely applied to the fields of seawater desalination, wastewater treatment and boiler water.
With the development of science and technology, the requirement of various industries on process water is higher and higher, and particularly in the industries of high and new technologies and the like, a set of demineralized water preparation system is set according to the requirement of a user on the production water of a thermal power station. The raw water is local underground water, the effluent water needs to reach the water standard of the demineralized water, and in order to meet the requirements, a treatment system of a multi-media filter, an activated carbon filter, a two-stage reverse osmosis and EDI device is designed to prepare the demineralized water, so that the requirement of the effluent water quality standard can be met.
In order to improve the utilization rate of water resources, the industrial wastewater is recycled after being recycled. At present, the conventional wastewater treatment process only has partial removal effect on calcium and magnesium ions in concentrated salt water, but basically has no treatment capacity on chloride ions, and directly influences the water quality and the utilization efficiency of reuse water.
Disclosure of Invention
The invention aims to provide a two-stage RO + EDI demineralized water system aiming at the defects in the prior art.
In order to realize the invention, the following technical scheme is adopted: the two-stage RO + EDI desalination water system comprises a pretreatment system, a reverse osmosis system and an EDI system, wherein the pretreatment system comprises a raw water tank, a multi-media filter a, a multi-media filter b, an activated carbon filter a, an activated carbon filter b and a purified water tank; the reverse osmosis system comprises a primary RO security filter, a primary RO device, a primary RO water tank, a secondary RO security filter, a secondary RO device and a secondary RO water tank; the EDI system comprises an EDI security filter, an EDI device, a terminal precision filter, a demineralized water tank and a demineralized water pump; the raw water tank is respectively connected with a multi-media filter a and a multi-media filter b through a raw water pump, the multi-media filter a and the multi-media filter b are respectively connected with an activated carbon filter a and an activated carbon filter b, the activated carbon filter a and the activated carbon filter b are respectively connected with a purified water tank, the bottom of the purified water tank is connected with a first-stage RO cartridge filter through an RO cartridge filter booster pump, and the bottom of the purified water tank is also connected with a backwashing water pump; one-level RO cartridge filter passes through one-level RO high-pressure pump and connects one-level RO device, one-level RO water tank is connected to one-level RO device, one-level RO water tank produces the water pump through one-level RO and connects second grade RO cartridge filter, second grade RO cartridge filter passes through second grade RO high-pressure pump and connects second grade RO device, second grade RO water tank is connected to second grade RO device, second grade RO water tank produces the water pump through second grade RO and connects EDI cartridge filter, EDI cartridge filter connects the EDI device, terminal precision filter is connected to the EDI device, terminal precision filter connects the desalination water tank, the desalination water pump is connected to the desalination water tank.
Preferably, the pipeline connecting the raw water pump with the multi-media filter a and the multi-media filter b is also respectively connected with a flocculating agent dosing device and a bactericide dosing device.
Preferably, a scale inhibitor dosing device a and a reducing agent dosing device are further connected to a pipeline connecting the RO cartridge filter booster pump and the primary RO cartridge filter respectively.
Preferably, the pipeline connecting the first-stage RO device and the first-stage RO water tank is also connected with an alkali adding device.
Preferably, the pipeline connecting the first-stage RO water pump and the second-stage RO cartridge filter is also connected with a scale inhibitor dosing device b.
Preferably, the bottoms of the multi-media filter a, the multi-media filter b, the activated carbon filter a and the activated carbon filter b are respectively connected with a backwashing water pump.
Has the advantages that: (1) the invention adopts a multi-medium filter and an activated carbon filter as a pretreatment system. Has the characteristics of good effluent quality, large permeability and the like. The suspended solid and the colloidal silica of ability further getting rid of aquatic, and other impurity such as the material organic matter that adds the macromolecule reach the requirement that the reverse osmosis was intake through the quality of water after the preliminary treatment, effectively reduce the SDI value more, reduce removal pressure for reverse osmosis to the best pretreatment unit who is called reverse osmosis can effectively prolong reverse osmosis membrane life-span. Ensuring the normal operation of subsequent equipment. After adding the scale inhibitor by the dosing device, the water enters the cartridge filter, so that the surface of the membrane component is prevented from scaling, and the service life of the membrane component is prolonged. Then the water is sent into a Reverse Osmosis (RO) system by a high-pressure pump, and more than 98 percent of inorganic salts, 99 percent of bacteria and a heat source can be removed by the ion-level filtration principle of the reverse osmosis membrane under the action of pressure. And finally, the RO outlet water enters an RO water production tank, and the RO concentrated water (salt, mechanical impurities, colloidal substances and a small part of non-permeated water in the concentrated raw water are collected into concentrated water) is discharged into a sewer or a backwashing water tank, and can be used as a backwashing water source of the filter for repeated utilization, so that the consumption of the water source is saved.
(2) The invention has the characteristics of simple structure, simple and convenient operation, high concentrated water recovery rate, low operation cost, long service life, good economic benefit and the like. Can be matched with water treatment equipment for seawater desalination, boiler water and the like, and is a reverse osmosis concentrated water recycling system which is efficient, simple, can be used for a long time and has higher reliability and innovation.
Drawings
FIG. 1 is a flow chart of the structure of the present invention.
Detailed Description
The present invention will be described with reference to the accompanying drawings.
The two-stage RO + EDI desalination water system comprises a pretreatment system, a reverse osmosis system and an EDI system, wherein the pretreatment system comprises a raw water tank 1, a multi-media filter a 2, a multi-media filter b 3, an activated carbon filter a 4, an activated carbon filter b 5 and a purified water tank 6; the reverse osmosis system comprises a primary RO cartridge filter 7, a primary RO device 8, a primary RO water tank 9, a secondary RO cartridge filter 10, a secondary RO device 11 and a secondary RO water tank 12; the EDI system comprises an EDI security filter 13, an EDI device 14, a terminal precision filter 15, a demineralized water tank 16 and a demineralized water pump 17; the raw water tank 1 is respectively connected with a multi-media filter a 2 and a multi-media filter b 3 through a raw water pump 18, the multi-media filter a 2 and the multi-media filter b 3 are respectively connected with an activated carbon filter a 4 and an activated carbon filter b 5, the activated carbon filter a 4 and the activated carbon filter b 5 are respectively connected with a purified water tank 6, the bottom of the purified water tank 6 is connected with a first-stage RO cartridge filter 7 through an RO cartridge filter booster pump 19, and the bottom of the purified water tank 6 is also connected with a backwashing water pump 20; one-level RO cartridge filter 7 is connected one-level RO device 8 through one-level RO high-pressure pump 21, one-level RO water tank 9 is connected to one-level RO device 8, water pump 22 is produced through one-level RO in one-level RO water tank 9 and is connected second grade RO cartridge filter 10, second grade RO cartridge filter 10 is connected second grade RO device 11 through second grade RO high-pressure pump 23, second grade RO water tank 12 is connected to second grade RO device 11, second grade RO water tank 12 is produced water pump 24 through second grade RO and is connected EDI cartridge filter 13, EDI cartridge filter 13 connects EDI device 14, terminal precision filter 15 is connected to EDI device 14, terminal precision filter 15 connects demineralized water tank 16, demineralized water tank 16 connects demineralized water pump 17.
And a pipeline for connecting the raw water pump 18 with the multi-media filter a 2 and the multi-media filter b 3 is also respectively connected with a flocculating agent dosing device 25 and a bactericide dosing device 26.
And a scale inhibitor dosing device a 27 and a reducing agent dosing device 28 are also respectively connected to a pipeline connecting the RO cartridge filter booster pump 19 and the primary RO cartridge filter 7.
And the pipeline connecting the first-stage RO device 8 and the first-stage RO water tank 9 is also connected with an alkali adding device 29.
The pipeline connecting the first-stage RO water producing pump 22 and the second-stage RO cartridge filter 10 is also connected with a scale inhibitor dosing device b 30.
The bottoms of the multi-medium filter a 2, the multi-medium filter b 3, the activated carbon filter a 4 and the activated carbon filter b 5 are also respectively connected with a backwashing water pump 20.
Claims (6)
1. The two-stage RO + EDI desalination water system is characterized by comprising a pretreatment system, a reverse osmosis system and an EDI system, wherein the pretreatment system comprises a raw water tank, a multi-media filter a, a multi-media filter b, an activated carbon filter a, an activated carbon filter b and a purified water tank; the reverse osmosis system comprises a primary RO security filter, a primary RO device, a primary RO water tank, a secondary RO security filter, a secondary RO device and a secondary RO water tank; the EDI system comprises an EDI security filter, an EDI device, a terminal precision filter, a demineralized water tank and a demineralized water pump; the raw water tank is respectively connected with a multi-media filter a and a multi-media filter b through a raw water pump, the multi-media filter a and the multi-media filter b are respectively connected with an activated carbon filter a and an activated carbon filter b, the activated carbon filter a and the activated carbon filter b are respectively connected with a purified water tank, the bottom of the purified water tank is connected with a first-stage RO cartridge filter through an RO cartridge filter booster pump, and the bottom of the purified water tank is also connected with a backwashing water pump; one-level RO cartridge filter passes through one-level RO high-pressure pump and connects one-level RO device, one-level RO water tank is connected to one-level RO device, one-level RO water tank produces the water pump through one-level RO and connects second grade RO cartridge filter, second grade RO cartridge filter passes through second grade RO high-pressure pump and connects second grade RO device, second grade RO water tank is connected to second grade RO device, second grade RO water tank produces the water pump through second grade RO and connects EDI cartridge filter, EDI cartridge filter connects the EDI device, terminal precision filter is connected to the EDI device, terminal precision filter connects the desalination water tank, the desalination water pump is connected to the desalination water tank.
2. The two-stage RO + EDI desalination water system of claim 1, wherein the raw water pump is further connected with a flocculant dosing device and a bactericide dosing device respectively on the pipeline connecting the raw water pump with the multi-media filter a and the multi-media filter b.
3. The two-stage RO + EDI desalination water system of claim 1 wherein the pipeline connecting the RO cartridge filter booster pump and the primary RO cartridge filter is further connected with a scale inhibitor dosing device a and a reducing agent dosing device, respectively.
4. The two-stage RO + EDI desalination water system of claim 1 wherein the piping connecting the primary RO apparatus to the primary RO water tank is further connected to an alkalizing device.
5. The two-stage RO + EDI desalination water system of claim 1, wherein the pipeline connecting the primary RO water pump and the two-stage RO cartridge filter is further connected with a scale inhibitor dosing device b.
6. The two-stage RO + EDI demineralized water system of claim 1 wherein the bottoms of said multi-media filter a, multi-media filter b, activated carbon filter a, activated carbon filter b are further connected to backwash water pumps, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023104017.1U CN214571274U (en) | 2020-12-21 | 2020-12-21 | Two-stage RO + EDI desalination water system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023104017.1U CN214571274U (en) | 2020-12-21 | 2020-12-21 | Two-stage RO + EDI desalination water system |
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| CN214571274U true CN214571274U (en) | 2021-11-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114835289A (en) * | 2022-04-19 | 2022-08-02 | 湖南东晟环保有限公司 | High-salt high-hardness water sacrificial membrane treatment process |
| CN116282370A (en) * | 2023-01-09 | 2023-06-23 | 常州海欣环保科技有限公司 | Two-stage reverse osmosis water purification equipment |
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2020
- 2020-12-21 CN CN202023104017.1U patent/CN214571274U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114835289A (en) * | 2022-04-19 | 2022-08-02 | 湖南东晟环保有限公司 | High-salt high-hardness water sacrificial membrane treatment process |
| CN116282370A (en) * | 2023-01-09 | 2023-06-23 | 常州海欣环保科技有限公司 | Two-stage reverse osmosis water purification equipment |
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