CN110550788A - Zero release water treatment facilities - Google Patents
Zero release water treatment facilities Download PDFInfo
- Publication number
- CN110550788A CN110550788A CN201910861374.5A CN201910861374A CN110550788A CN 110550788 A CN110550788 A CN 110550788A CN 201910861374 A CN201910861374 A CN 201910861374A CN 110550788 A CN110550788 A CN 110550788A
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- CN
- China
- Prior art keywords
- membrane
- electrodialyzer
- pipe
- water treatment
- outlet pipe
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Classifications
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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
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
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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
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
Abstract
the invention discloses a zero-emission water treatment device, which comprises a reaction tank, an electrodialyzer, a membrane electrotank and a diffusion dialysis tank, wherein a water inlet is formed in the upper left side of the reaction tank, a sedimentation tank and a partition plate are arranged in the reaction tank, the reaction tank is communicated with the electrodialyzer through a first conduit, electrodes are arranged on two sides of the inner wall of the electrodialyzer, a liquid receiving inlet pipe is arranged at the bottom of the electrodialyzer, an anode membrane and a cathode membrane are arranged in the electrodialyzer, a concentrated liquid outlet pipe is arranged in the electrodialyzer and positioned above the right side of the anode membrane, and a desalinated liquid outlet pipe is arranged in the middle of the top of the electrodialyzer and positioned above the right side of the cathode membrane. This zero release water treatment facilities has solved zinc-plating company, metal finishing industry and electronic product manufacturing industry and has got rid of and retrieve the problem that acid, alkali, salt process are very troublesome and can not realize zero discharge water treatment, and it is more convenient to be applied to the metal treatment industry, and the recovery treatment effect is high.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a zero-emission water treatment device.
Background
At present, the flue gas desulfurization technology of the coal-fired power plant comprises wet desulfurization, dry desulfurization and the like. Among them, the wet desulfurization technique is most widely used. Wet flue gas desulfurization is a technological process adopted by about 85 percent of large-scale thermal power plants in the world at present. The waste water of the wet flue gas desulfurization system has high content of heavy metal ions such as mercury, lead, nickel, arsenic and chromium, so that the harm of direct discharge is great, the common chemical treatment method is too complex, and chemical medicines are required to be added continuously, so that the labor is consumed. In addition, the chlorine ions (no chemical agent can remove the chlorine ions at present) in the wastewater treated by the desulfurization wastewater chemical treatment method can not be removed, the processes of removing and recovering acid, alkali and salt in the galvanizing company, the metal finishing industry and the electronic product manufacturing industry are very troublesome, and the zero-discharge water treatment can not be realized.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a zero-discharge water treatment device, which solves the problems that the processes of removing and recovering acid, alkali and salt are very troublesome and zero-discharge water treatment cannot be realized in galvanizing companies, metal finishing industries and electronic product manufacturing industries.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a zero-emission water treatment device comprises a reaction tank, an electrodialyzer, a membrane electrobath and a diffusion dialysis tank, wherein a water inlet is arranged above the left side of the reaction tank, a sedimentation tank and a partition plate are arranged inside the reaction tank, the reaction tank is communicated with the electrodialyzer through a first conduit, electrodes are arranged on two sides of the inner wall of the electrodialyzer, a liquid receiving inlet pipe is arranged at the bottom of the electrodialyzer, an anode membrane and a cathode membrane are arranged inside the electrodialyzer, a concentrated liquid outlet pipe is arranged above the right side of the anode membrane inside the electrodialyzer, a desalinated liquid outlet pipe is arranged above the right side of the cathode membrane at the middle position of the top of the electrodialyzer, one end of the concentrated liquid outlet pipe, far away from the electrodialyzer, is connected with a conveying pipe through a supply pump, the conveying pipe extends to the inside of the membrane electrobath, an ion exchange membrane is arranged in the middle, the membrane cell bottom is located the ion exchange membrane right side and is provided with water and advances the pipe, membrane cell top do not is provided with outlet pipe one and outlet pipe two, the one end that the membrane cell was kept away from to outlet pipe one and outlet pipe two communicates with the bottom and the top of diffusion dialysis cell respectively, diffusion dialysis cell inside is provided with negative membrane group, negative membrane group is provided with the negative membrane of multiunit.
Preferably, the electrodes are an anode electrode and a cathode electrode, respectively, the anode electrode is disposed on the left inner wall of the electrodialyzer, and the cathode electrode is disposed on the right inner wall of the electrodialyzer.
Preferably, the male and female films are provided in one set, and the male and female films are provided in multiple sets.
Preferably, the inside electrolysis post that is provided with of membrane electrobath, the electrolysis post is located ion exchange membrane left side and sets up to positive pole electrolysis post, the electrolysis post is located ion exchange membrane right side and sets up to negative pole electrolysis post.
Preferably, the top of the membrane cell is provided with exhaust pipes which are respectively positioned at two sides of the ion exchange membrane.
Preferably, reinforced plastic plates are arranged on two sides inside the diffusion dialysis tank.
Preferably, the bottom and the top of the diffusion dialysis tank are respectively provided with a bottom communicating pipe and a top communicating pipe, and the first water outlet pipe and the second water outlet pipe are respectively communicated with the bottom communicating pipe and the top communicating pipe.
Preferably, the top and the bottom of the diffusion dialysis tank are respectively provided with a first discharge pipe and a second discharge pipe.
Preferably, the bottom of the reaction tank is provided with a sediment drain outlet.
(III) advantageous effects
The invention provides a zero-emission water treatment device. The method has the following beneficial effects:
The zero-discharge water treatment device comprises a reaction tank, a water inlet, a baffle plate, a guide pipe, an electrodialyzer, a receiving liquid inlet pipe, a receiving liquid outlet pipe, a receiving liquid inlet pipe, a receiving liquid outlet pipe, a receiving liquid inlet pipe, a receiving liquid outlet. In the ion migration process, if the fixed charge of the membrane is opposite to the charge of the ions, the ions can pass through; if their charges are the same, the ions are repelled, thereby effecting solution desalination, concentration, purification, or purification.
The treated concentrated solution is injected into the membrane electrolytic cell through a concentrated solution outlet pipe, electrolytic columns in the membrane electrolytic cell are positioned at the left side and the right side of an ion exchange membrane and are respectively provided with an anode electrolytic column and a cathode electrolytic column, and an ion membrane is clamped between the anode and the cathode to form a unit electrolytic cell, so that ions with one charge are allowed to pass through, and the ions with the opposite charge are limited to pass through, so that the purposes of concentration, desalination, purification and electrochemical synthesis are achieved.
And (III) after the solution after treatment is injected into the diffusion dialysis tank through the first water outlet pipe and the second water outlet pipe by the membrane electric tank, the diffusion dialysis is realized through a negative membrane group, and the recovery of acid and alkali is mainly used. Under alkaline conditions, caustic soda can be recovered from a salt solution using a cation exchange membrane (cation membrane); under acidic conditions, an anion exchange membrane (negative membrane) can be used for recovering acid from a salt solution, and diffusion dialysis is used for recovering acid and alkali without consuming energy.
Drawings
FIG. 1 is a schematic structural view of the present invention as a whole;
FIG. 2 is a schematic structural view of a membrane cell according to the present invention;
FIG. 3 is a schematic view of the structure of a diffusion dialysis cell according to the present invention.
In the figure: 1 reaction tank, 2 electrodialyzer, 3 membrane electrobath, 4 diffusion dialysis tank, 5 water inlet, 6 sediment drain outlet, 7 guide pipe I, 8 receiving liquid inlet pipe, 9 electrode, 10 anode membrane, 11 cathode membrane, 12 desalination liquid outlet pipe, 13 concentrated liquid outlet pipe, 14 water inlet pipe, 15 supply pump, 16 conveying pipe, 17 ion exchange membrane, 18 electrolysis column, 19 exhaust pipe, 20 outlet pipe I, 21 outlet pipe II, 22 reinforced plastic board, 23 bottom communicating pipe, 24 top communicating pipe, 25 cathode membrane group, 26 discharge pipe I, 27 discharge pipe II.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a zero-emission water treatment device comprises a reaction tank 1, an electrodialyzer 2, a membrane cell 3 and a diffusion dialysis tank 4, wherein a water inlet 5 is arranged above the left side of the reaction tank 1, a precipitation tank and a partition plate are arranged inside the reaction tank 1, the reaction tank 1 is communicated with the electrodialyzer 2 through a first conduit 7, electrodes 9 are arranged on two sides of the inner wall of the electrodialyzer 2, a liquid receiving inlet pipe 8 is arranged at the bottom of the electrodialyzer 2, an anode membrane 10 and a cathode membrane 11 are arranged inside the electrodialyzer 2, a concentrated liquid outlet pipe 13 is arranged above the right side of the anode membrane 10 inside the electrodialyzer 2, a desalted liquid outlet pipe 12 is arranged above the right side of the cathode membrane 11 at the middle position of the top of the electrodialyzer 2, one end of the concentrated liquid outlet pipe 13, which is far away from the electrodialyzer 2, is connected with a conveying pipe 16 through a supply pump 15, the conveying pipe 16 extends into the membrane electro, the conveyer pipe 16 is located ion exchange membrane 17 left side, and membrane cell 3 bottom is located ion exchange membrane 17 right side and is provided with water and advances pipe 14, and membrane cell 3 top is provided with outlet pipe one 20 and outlet pipe two 21 respectively, and the one end that membrane cell 3 was kept away from to outlet pipe one 20 and outlet pipe two 21 communicates with the bottom and the top of diffusion dialysis cell 4 respectively, and diffusion dialysis cell 4 is inside to be provided with negative membrane group 25, and negative membrane group 25 is provided with the multiunit negative membrane.
The electrodes 9 are respectively an anode electrode provided on the left inner wall of the electrodialyser 2 and a cathode electrode provided on the right inner wall of the electrodialyser 2.
The male and female films 10 and 11 are provided in one set, and the male and female films 10 and 11 are provided in plural sets.
The inside electrolysis post 18 that is provided with of membrane electricity groove 3, electrolysis post 18 are located ion exchange membrane 17 left side and set up to positive pole electrolysis post, and electrolysis post 18 is located ion exchange membrane 17 right side and sets up to negative pole electrolysis post.
the top of the membrane cell 3 is provided with an exhaust pipe 19, and the exhaust pipes 19 are respectively positioned at two sides of the ion exchange membrane 17.
Reinforced plastic plates 22 are provided on both sides inside the diffusion dialysis cell 4.
The bottom and the top of the diffusion dialysis tank 4 are respectively provided with a bottom communicating pipe 23 and a top communicating pipe 24, and the first water outlet pipe 20 and the second water outlet pipe 21 are respectively communicated with the bottom communicating pipe 23 and the top communicating pipe 24.
The top and the bottom of the diffusion dialysis tank 4 are respectively provided with a first discharge pipe 26 and a second discharge pipe 27.
The bottom of the reaction tank 1 is provided with a sediment drain outlet 6.
when the device is used, discharged sewage is injected into the reaction tank 1 from the water inlet 5, firstly, precipitation is carried out, the precipitated water flows into the other side of the reaction tank 1 from the upper part of the partition plate, enters the electrodialyzer 2 through the first guide pipe 7, and is injected into receiving liquid through the receiving liquid inlet pipe 8 at the bottom of the electrodialyzer 2, the electrodes 9 on two sides of the electrodialyzer 2 are respectively an anode electrode and a cathode electrode, and when the device is in work, under the driving of an external direct current electric field, the selective permeability of the ion exchange membrane is utilized (namely cations can permeate through a cation exchange membrane, and anions can permeate through an anion exchange membrane), and anions and cations move to the anode and the cathode respectively. In the ion migration process, if the fixed charge of the membrane is opposite to the charge of the ions, the ions can pass through; if the charges of the two components are the same, ions are repelled, so that the solution is desalted, concentrated, refined or purified, the treated concentrated solution is injected into the membrane electric tank 3 through a concentrated solution outlet pipe 13, the electrolytic columns 18 in the membrane electric tank 3 are respectively arranged as an anode electrolytic column and a cathode electrolytic column at the left side and the right side of an ion exchange membrane 17, an ion membrane is clamped between the anode and the cathode to form a unit electrolytic tank, ions with one charge are allowed to pass through, and the ions with the opposite charge are limited to pass through, so that the purposes of concentration, desalination, purification and electrochemical synthesis are achieved, after the treated solution is injected into the diffusion dialysis tank 4 through a water outlet pipe I20 and a water outlet pipe II 21 by the membrane electric tank 3, and the diffusion dialysis is mainly used for recycling of acid and alkali through a cathode membrane group 25. Under alkaline conditions, caustic soda can be recovered from a salt solution using a cation exchange membrane (cation membrane); under acidic conditions, an anion exchange membrane (negative membrane) can be used for recovering acid from a salt solution, and diffusion dialysis is used for recovering acid and alkali without consuming energy.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A zero-discharge water treatment device comprises a reaction tank (1), an electrodialyzer (2), a membrane cell (3) and a diffusion dialysis cell (4), and is characterized in that: a water inlet (5) is arranged above the left side of the reaction tank (1), a precipitation tank and a partition plate are arranged in the reaction tank (1), the reaction tank (1) is communicated with the electrodialyzer (2) through a first conduit (7), electrodes (9) are arranged on two sides of the inner wall of the electrodialyzer (2), a liquid receiving inlet pipe (8) is arranged at the bottom of the electrodialyzer (2), an anode membrane (10) and a cathode membrane (11) are arranged in the electrodialyzer (2), a concentrated liquid outlet pipe (13) is arranged above the right side of the anode membrane (10) in the electrodialyzer (2), a desalted liquid outlet pipe (12) is arranged above the right side of the cathode membrane (11) in the middle position of the top of the electrodialyzer (2), one end, far away from the electrodialyzer (2), of the concentrated liquid outlet pipe (13) is connected with a conveying pipe (16) through a feed pump (15), and the conveying pipe (16) extends into the membrane electrodialyzer (3), the utility model discloses a diffusion dialysis membrane, including membrane electricity groove (3), conveyer pipe (16), delivery pipe (3), outlet pipe (20) and outlet pipe two (21), the one end that membrane electricity groove (3) were kept away from to outlet pipe one (20) and outlet pipe two (21) communicates with the bottom and the top of diffusion dialysis groove (4) respectively, diffusion dialysis groove (4) inside is provided with negative membrane group (25), negative membrane group (25) are provided with multiunit negative membrane.
2. The zero-emission water treatment device according to claim 1, wherein: the electrodes (9) are respectively an anode electrode and a cathode electrode, the anode electrode is arranged on the left inner wall of the electrodialyzer (2), and the cathode electrode is arranged on the right inner wall of the electrodialyzer (2).
3. The zero-emission water treatment device according to claim 1, wherein: the male film (10) and the female film (11) are arranged into a group, and the male film (10) and the female film (11) are arranged into a plurality of groups.
4. The zero-emission water treatment device according to claim 1, wherein: the membrane electrolyzer (3) is internally provided with an electrolysis column (18), the electrolysis column (18) is positioned on the left side of the ion exchange membrane (17) and is set as an anode electrolysis column, and the electrolysis column (18) is positioned on the right side of the ion exchange membrane (17) and is set as a cathode electrolysis column.
5. The zero-emission water treatment device according to claim 1, wherein: an exhaust pipe (19) is arranged at the top of the membrane electric tank (3), and the exhaust pipes (19) are respectively positioned on two sides of the ion exchange membrane (17).
6. The zero-emission water treatment device according to claim 1, wherein: and reinforced plastic plates (22) are arranged on two sides in the diffusion dialysis tank (4).
7. The zero-emission water treatment device according to claim 1, wherein: and the bottom and the top of the diffusion dialysis tank (4) are respectively provided with a bottom communicating pipe (23) and a top communicating pipe (24), and the first water outlet pipe (20) and the second water outlet pipe (21) are respectively communicated with the bottom communicating pipe (23) and the top communicating pipe (24).
8. The zero-emission water treatment device according to claim 1, wherein: and the top and the bottom of the diffusion dialysis tank (4) are respectively provided with a first discharge pipe (26) and a second discharge pipe (27).
9. The zero-emission water treatment device according to claim 1, wherein: and a precipitate drain outlet (6) is formed at the bottom of the reaction tank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910861374.5A CN110550788A (en) | 2019-09-12 | 2019-09-12 | Zero release water treatment facilities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910861374.5A CN110550788A (en) | 2019-09-12 | 2019-09-12 | Zero release water treatment facilities |
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| CN110550788A true CN110550788A (en) | 2019-12-10 |
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| CN201910861374.5A Pending CN110550788A (en) | 2019-09-12 | 2019-09-12 | Zero release water treatment facilities |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010040093A1 (en) * | 1999-05-05 | 2001-11-15 | Archer Daniels Midland Company | Apparatus and process for electrodialysis of salts |
| CN101541687A (en) * | 2006-10-20 | 2009-09-23 | 帕克斯公司 | Simultaneous acid and base production from an aqueous stream |
| CN105645644A (en) * | 2016-01-07 | 2016-06-08 | 浙江蓝极膜技术有限公司 | Technique for recovering sulfuric acid from sulfuric acid/sodium sulfate-containing wastewater by two-stage diffusion dialysis, two-stage electrodialysis and bipolar membrane |
| DE102016007815A1 (en) * | 2016-06-22 | 2017-12-28 | Universität Stuttgart | Crosslinked highly stable anion exchange blend membranes with polyethylene glycols as the hydrophilic membrane phase |
| CN107935255A (en) * | 2017-11-21 | 2018-04-20 | 江苏新海发电有限公司 | A kind of processing method of the desulfurization wastewater of near-zero release |
-
2019
- 2019-09-12 CN CN201910861374.5A patent/CN110550788A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010040093A1 (en) * | 1999-05-05 | 2001-11-15 | Archer Daniels Midland Company | Apparatus and process for electrodialysis of salts |
| CN101541687A (en) * | 2006-10-20 | 2009-09-23 | 帕克斯公司 | Simultaneous acid and base production from an aqueous stream |
| CN105645644A (en) * | 2016-01-07 | 2016-06-08 | 浙江蓝极膜技术有限公司 | Technique for recovering sulfuric acid from sulfuric acid/sodium sulfate-containing wastewater by two-stage diffusion dialysis, two-stage electrodialysis and bipolar membrane |
| DE102016007815A1 (en) * | 2016-06-22 | 2017-12-28 | Universität Stuttgart | Crosslinked highly stable anion exchange blend membranes with polyethylene glycols as the hydrophilic membrane phase |
| CN107935255A (en) * | 2017-11-21 | 2018-04-20 | 江苏新海发电有限公司 | A kind of processing method of the desulfurization wastewater of near-zero release |
Non-Patent Citations (2)
| Title |
|---|
| 曹英耀等: "《清洁生产理论与实务》", 31 December 2009, 中山大学出版社 * |
| 苏会东等: "《水污染控制工程》", 31 May 2017, 中国建材工业出版社 * |
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Application publication date: 20191210 |