CN113429036A - Variable-voltage electro-adsorption softening concentration technology - Google Patents
Variable-voltage electro-adsorption softening concentration technology Download PDFInfo
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- CN113429036A CN113429036A CN202110773546.0A CN202110773546A CN113429036A CN 113429036 A CN113429036 A CN 113429036A CN 202110773546 A CN202110773546 A CN 202110773546A CN 113429036 A CN113429036 A CN 113429036A
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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
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/02—Softening water by precipitation of the hardness
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
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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
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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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
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
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Abstract
The invention relates to the technical field of variable-pressure electro-adsorption, and discloses a variable-pressure electro-adsorption softening and concentrating technology, wherein a raw water tank is connected with a manganese sand filter, a water inlet pump A is arranged between the raw water tank and the manganese sand filter, an intermediate water tank is connected with the manganese sand filter, a water inlet pump B is arranged on the intermediate water tank, the intermediate water tank is connected with a variable-pressure electro-adsorption device through the water inlet pump B, a washing water pump is arranged on the intermediate water tank, the intermediate water tank is connected with the manganese sand filter through the washing water pump, when wastewater, particularly high-salinity high-hardness wastewater such as desulfurization wastewater, is treated by the variable-pressure electro-adsorption technology, scales such as calcium, magnesium and the like can be deposited on a cathode, oxidizing substances can be generated on the anode to damage colloids in the water to cause instability, flocculate and precipitate with the scales, and are discharged through a scale flushing system, so that the high-hardness wastewater has good softening and descaling effects and no need of dosing, and the problem that the traditional electro-adsorption treatment of high-hardness wastewater needs dosing for softening and pre-treatment is solved, greatly reducing the operating cost of the electro-adsorption.
Description
Technical Field
The invention relates to the technical field of variable-voltage electro-adsorption, in particular to a variable-voltage electro-adsorption softening and concentrating technology.
Background
With the issuance of various national environmental protection policies and the strict implementation of pollution discharge permit systems, high-hardness and high-salinity wastewater such as thermal power plant desulfurization wastewater and the like of most industrial enterprises cannot be discharged outside, and zero-discharge curing treatment is required. Because the energy consumption of curing treatment unit ton water is large, a concentration and decrement treatment system is usually arranged.
At present, the treatment technologies for softening, concentrating and reducing high-hardness and high-salinity wastewater such as desulfurization wastewater mainly comprise a membrane method, a thermal method and the like. Wherein, the membrane concentration comprises high-pressure roll type reverse osmosis, disc tube type reverse osmosis, electrodialysis, forward osmosis and the like, and has the problems of high requirement on the quality of inlet water, long pretreatment process, large occupied area of equipment, easy pollution and blockage of the membrane, softening requirement, high medicament cost and the like; the thermal method concentration comprises flue gas waste heat flash evaporation, low-temperature negative-pressure multiple-effect concentration, flue gas waste heat concentration, a crystal seed method MVR and the like, and has the problems of easy scaling and blockage, difficulty in cleaning equipment (calcium sulfate, magnesium silicate scale and the like), low heat exchange efficiency, large occupied area of the equipment and the like. The operation conditions of the prior cases show that the two main types of concentration technologies have certain limitations.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a variable-pressure electro-adsorption softening and concentrating technology which has the advantages of better softening and descaling effects due to the discharge of a scale flushing system, no need of chemical addition for softening, solving the problem that the traditional electro-adsorption treatment of high-hardness wastewater needs chemical addition for softening pretreatment, greatly reducing the operating cost of electro-adsorption and the like, and solving the problems of easy scaling and blockage, difficult equipment cleaning (calcium sulfate, magnesium silicate scale and the like), low heat exchange efficiency, large equipment floor area and the like. The operation conditions of the prior cases show that the two major concentration technologies have certain limitation problems.
(II) technical scheme
In order to realize the discharge through the water scale flushing system, have better softening and descaling effects, do not need to add chemicals for softening, solve the problem that the traditional electric adsorption treatment of high-hardness wastewater needs to be pretreated by adding chemicals for softening, and greatly reduce the operation cost of electric adsorption, the invention provides the following technical scheme: the utility model provides a variable pressure formula electrosorption softens concentrated technique, including former water tank, manganese sand filter, variable pressure formula electrosorption device, produce the water tank, the concentrated water tank, the dirt catch basin, former water tank links to each other with manganese sand filter, be provided with intake pump A between former water tank and the manganese sand filter, be connected with middle water tank on the manganese sand filter, be provided with intake pump B on the middle water tank, middle water tank passes through intake pump B and links to each other with variable pressure formula electrosorption device, be provided with the washing water pump on the middle water tank, middle water tank passes through the washing water pump and links to each other with manganese sand filter, variable pressure formula electrosorption device links to each other with the product water tank, variable pressure formula electrosorption device links to each other with the concentrated water tank, variable pressure formula electrosorption device links to each other with the dirt catch basin, be provided with the clarified water pump on the dirt catch basin, the dirt catch basin passes through clarified water pump and links to each other with former water tank.
Preferably, the upper part of the raw water tank is fixedly connected with a first pipeline, the first pipeline is fixedly connected with the manganese sand filter, and the water inlet pump A is fixedly connected with the first pipeline.
Preferably, the manganese sand filter is fixedly connected with a second pipeline, the second pipeline is fixedly connected with the middle water tank, the middle water tank is fixedly connected with a third pipeline, the third pipeline is fixedly connected with the manganese sand filter, the backwashing pump is fixedly connected with the third pipeline, the middle water tank is fixedly connected with a fourth pipeline, the fourth pipeline is fixedly connected with the variable-pressure electric adsorption device, and the water inlet pump B is fixedly connected with the fourth pipeline.
Preferably, the first water outlet pipe is fixedly connected to the variable-pressure electro-adsorption device, the first water outlet pipe is fixedly connected to the water production tank, the second water outlet pipe is fixedly connected to the variable-pressure electro-adsorption device, the second water outlet pipe is fixedly connected to the concentrated water tank, the third water outlet pipe is fixedly connected to the first water outlet pipe, the third water outlet pipe is fixedly connected to the manganese sand filter, the third water outlet pipe is fixedly connected to the connecting pipe, and the connecting pipe is fixedly connected to the sludge collecting tank.
Preferably, the sludge collecting tank is fixedly connected with a conveying pipe, the conveying pipe is fixedly connected with the raw water tank, and the clean water pump is fixedly connected with the conveying pipe.
(III) advantageous effects
Compared with the prior art, the invention provides a variable-pressure electro-adsorption softening and concentrating technology, which has the following beneficial effects:
1. when the variable-pressure electro-adsorption softening and concentrating technology is used for treating high-salinity and high-hardness wastewater, such as wastewater, particularly desulfurization wastewater and the like, through the variable-pressure electro-adsorption technology, scales such as calcium, magnesium and the like can be deposited on a cathode of the variable-pressure electro-adsorption technology, oxidizing substances can be generated at an anode of the variable-pressure electro-adsorption technology to destroy colloids in water to cause instability and flocculate and precipitate with the scales, and the oxidized substances are discharged through a scale washing system.
2. According to the variable-voltage electro-adsorption softening and concentrating technology, the working voltage variable control model in the electro-adsorption operation process is adopted, so that the adsorption performance and stability of electro-adsorption are improved, and the problem that an electro-adsorption device is easy to paralysis is solved. Solves the problem that the traditional electro-adsorption can not be used for high-salinity wastewater (TDS is more than or equal to 6000 mg/L), and provides a low-cost technical route and a low-cost technological method for the concentration and desalination treatment of the high-hardness high-salinity wastewater.
3. According to the variable-pressure electro-adsorption softening and concentrating technology, the variable-pressure electro-adsorption device is adopted to carry out concentration and reduction treatment on high-hardness and high-salinity wastewater such as desulfurization wastewater, pretreatment is basically not needed, and the control difficulty is reduced.
4. The variable-pressure electro-adsorption softening concentration technology is coupled with reverse osmosis technology and other technologies by utilizing the variable-pressure electro-adsorption technology, so that the recovery rate and the desalination rate of produced water can be flexibly controlled at low cost, and the production quality and high concentration are improved.
Drawings
FIG. 1 is a schematic view of the flow structure of the present invention;
fig. 2 is a schematic front perspective view of the present invention.
In the figure: 1. a raw water tank; 2. a water inlet pump A; 3. a manganese sand filter; 4. an intermediate water tank; 5. a water inlet pump B; 6. a water washing pump; 7. a variable voltage electro-adsorption device; 8. a water production tank; 9. a concentrated water tank; 10. a mud dirt collecting tank; 11. a clean water pump; 12. a first pipeline; 13. a second pipeline; 14. a third pipeline; 15. a fourth pipeline; 16. a water outlet pipe II; 17. a first water outlet pipe; 18. a third water outlet pipe; 19. a connecting pipe; 20. a delivery pipe.
Detailed Description
The present invention will be described in further detail with reference to the drawings, wherein like elements are designated by like reference numerals, wherein the terms "front", "rear", "left", "right", "upper" and "lower", "bottom" and "top" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular element.
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. 1-2, the present invention provides a technical solution: a variable-pressure electro-adsorption softening and concentrating technology comprises a raw water tank 1, a manganese sand filter 3, a variable-pressure electro-adsorption device 7, a produced water tank 8, a concentrated water tank 9 and a sludge collecting tank 10, wherein the raw water tank 1 is connected with the manganese sand filter 3, a water inlet pump A2 is arranged between the raw water tank 1 and the manganese sand filter 3, an intermediate water tank 4 is connected with the manganese sand filter 3, a water inlet pump B5 is arranged on the intermediate water tank 4, the intermediate water tank 4 is connected with the variable-pressure electro-adsorption device 7 through a water inlet pump B5, a washing water pump 6 is arranged on the intermediate water tank 4, the intermediate water tank 4 is connected with the manganese sand filter 3 through the washing water pump 6, the variable-pressure electro-adsorption device 7 is connected with the produced water tank 8, the variable-pressure electro-adsorption device 7 is connected with the concentrated water tank 9, the variable-pressure electro-adsorption device 7 is connected with the sludge collecting tank 10, a clean water pump 11 is arranged on the sludge collecting tank 10, and the sludge collecting tank 10 is connected with the raw water tank 1 through the clean water pump 11, the upper part of the raw water tank 1 is fixedly connected with a pipeline I12, the pipeline I12 is fixedly connected with a manganese sand filter 3, a water inlet pump A2 is fixedly connected with the pipeline I12, the upper part of the manganese sand filter 3 is fixedly connected with a pipeline II 13, the pipeline II 13 is fixedly connected with an intermediate water tank 4, the upper part of the intermediate water tank 4 is fixedly connected with a pipeline III 14, the pipeline III 14 is fixedly connected with the manganese sand filter 3, a washing water pump 6 is fixedly connected with the pipeline III 14, the intermediate water tank 4 is fixedly connected with a pipeline IV 15, the pipeline IV 15 is fixedly connected with a variable-pressure type electric adsorption device 7, a water inlet pump B5 is fixedly connected with the pipeline IV 15, the variable-pressure type electric adsorption device 7 is fixedly connected with a water outlet pipe I17, the water outlet pipe I17 is fixedly connected with a water production tank 8, the variable-pressure type electric adsorption device 7 is fixedly connected with a water outlet pipe II 16, the water outlet pipe II 16 is fixedly connected with a concentrated water tank 9, the water outlet pipe I17 is fixedly connected with a water outlet pipe III 18, the third water outlet pipe 18 is fixedly connected with the manganese sand filter 3, the third water outlet pipe 18 is fixedly connected with a connecting pipe 19, the connecting pipe 19 is fixedly connected with the sludge collecting tank 10, the sludge collecting tank 10 is fixedly connected with a conveying pipe 20, the conveying pipe 20 is fixedly connected with the raw water tank 1, and the clean water pump 11 is fixedly connected with the conveying pipe 20.
When the device is used, high-hardness high-salt wastewater such as desulfurization wastewater and the like enters the raw water tank 1 to be buffered, then enters the manganese sand filter 3 through the water inlet pump A2, the wastewater filtered by the manganese sand filter 3 is discharged to the middle water tank 4, the water discharged from the middle water tank 4 is divided into two paths, one path enters the variable-voltage electro-adsorption device 7 through the water inlet pump 5, the other path is connected with the manganese sand filter through the backwashing pump 6, and the variable-voltage electro-adsorption device 7 is internally provided with a nonmetal composite electrode prepared from a WQ series new material, or other electrode materials and is connected with an external direct-current power supply. When the high-hardness high-salinity wastewater flows through a low-voltage electric field formed by a positive electrode and a negative electrode, a large amount of OH < - > is generated near the negative plate to form a strong alkaline environment, cations such as calcium, magnesium and the like in water are attracted to the negative plate to migrate, and scale such as calcium carbonate, magnesium hydroxide and the like is generated and deposited on the negative electrode; the anode is oxidized to generate active hydroxyl radical, chlorine and other matters to destroy colloid matter in water and flocculate and precipitate together with scale. The sediment is cleaned periodically, and the cleaning wastewater is discharged to the sludge collecting tank 10. The water produced by the variable-pressure electric adsorption device 7 is collected to the water production tank 8, after the variable-pressure electric adsorption device 7 operates for a period of time, the electrodes are saturated in adsorption, the desalting capacity is lost, and the desorption regeneration stage is started. When desorption and regeneration are carried out, the direct current power supply is cut off, reverse voltage is applied for a period of time, water is fed for flushing, at the same time, charged particles are released into flushing water, concentrated water is formed and is discharged to the concentrated water tank 9, after sludge water collecting tank is settled, supernatant enters the raw water tank 1 through the clean water pump 11.
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 (5)
1. The utility model provides a concentrated technique is softened in variable pressure formula electrosorption, includes former water tank (1), manganese sand filter (3), variable pressure formula electrosorption device (7), produces water tank (8), dense water tank (9), dirt catch basin (10), its characterized in that: raw water tank (1) links to each other with manganese sand filter (3), be provided with intake pump A (2) between raw water tank (1) and manganese sand filter (3), be connected with middle water tank (4) on manganese sand filter (3), be provided with intake pump B (5) on middle water tank (4), middle water tank (4) link to each other with pressure change formula electric adsorption device (7) through intake pump B (5), be provided with wash water pump (6) on middle water tank (4), middle water tank (4) link to each other with manganese sand filter (3) through wash water pump (6), pressure change formula electric adsorption device (7) link to each other with product water tank (8), pressure change formula electric adsorption device (7) link to each other with thick water tank (9), pressure change formula electric adsorption device (7) link to each other with dirt collecting sump (10), be provided with clear water pump (11) on dirt collecting sump (10), dirt collecting sump (10) link to each other with raw water tank (1) through clear water pump (11).
2. The variable pressure electro-adsorption softening and concentrating technology according to claim 1, characterized in that: the upper fixedly connected with pipeline one (12) of the raw water tank (1), the pipeline one (12) is fixedly connected with the manganese sand filter (3), and the water inlet pump A (2) is fixedly connected with the pipeline one (12).
3. The variable pressure electro-adsorption softening and concentrating technology according to claim 1, characterized in that: fixedly connected with pipeline two (13) on manganese sand filter (3), pipeline two (13) and middle water tank (4) fixed connection, fixedly connected with pipeline three (14) on middle water tank (4), pipeline three (14) and manganese sand filter (3) fixed connection, wash water pump (6) and pipeline three (14) fixed connection, fixedly connected with pipeline four (15) on middle water tank (4), pipeline four (15) and variable voltage formula electrosorption device (7) fixed connection, intake pump B (5) and pipeline four (15) fixed connection.
4. The variable pressure electro-adsorption softening and concentrating technology according to claim 1, characterized in that: fixedly connected with outlet pipe one (17) on the pressure swing type electrosorption device (7), outlet pipe one (17) and product water tank (8) fixed connection, fixedly connected with outlet pipe two (16) on pressure swing type electrosorption device (7), outlet pipe two (16) and dense water tank (9) fixed connection, fixedly connected with outlet pipe three (18) on outlet pipe one (17), outlet pipe three (18) and manganese sand filter (3) fixed connection, fixedly connected with connecting pipe (19) on outlet pipe three (18), connecting pipe (19) and dirt catch basin (10) fixed connection.
5. The variable pressure electro-adsorption softening and concentrating technology according to claim 1, characterized in that: the sludge collecting tank (10) is fixedly connected with a delivery pipe (20), the delivery pipe (20) is fixedly connected with the raw water tank (1), and the clean water pump (11) is fixedly connected with the delivery pipe (20).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110773546.0A CN113429036A (en) | 2021-07-08 | 2021-07-08 | Variable-voltage electro-adsorption softening concentration technology |
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| CN202110773546.0A CN113429036A (en) | 2021-07-08 | 2021-07-08 | Variable-voltage electro-adsorption softening concentration technology |
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| CN113429036A true CN113429036A (en) | 2021-09-24 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001259644A (en) * | 2000-03-21 | 2001-09-25 | Nec Corp | Pure water producer and pure water production method using the same |
| CN202152294U (en) * | 2011-07-01 | 2012-02-29 | 北京中恒意美环境工程技术有限公司 | Electro-adsorption desalting plant for high-salinity waste water |
| CN110776165A (en) * | 2019-11-21 | 2020-02-11 | 河北涿州京源热电有限责任公司 | Method and system for water replenishing treatment of heat supply network |
| CN111302540A (en) * | 2020-02-27 | 2020-06-19 | 河北铄宇环保科技股份有限公司 | Thermal power plant desulfurization wastewater electrolytic adsorption treatment system and treatment method |
-
2021
- 2021-07-08 CN CN202110773546.0A patent/CN113429036A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001259644A (en) * | 2000-03-21 | 2001-09-25 | Nec Corp | Pure water producer and pure water production method using the same |
| CN202152294U (en) * | 2011-07-01 | 2012-02-29 | 北京中恒意美环境工程技术有限公司 | Electro-adsorption desalting plant for high-salinity waste water |
| CN110776165A (en) * | 2019-11-21 | 2020-02-11 | 河北涿州京源热电有限责任公司 | Method and system for water replenishing treatment of heat supply network |
| CN111302540A (en) * | 2020-02-27 | 2020-06-19 | 河北铄宇环保科技股份有限公司 | Thermal power plant desulfurization wastewater electrolytic adsorption treatment system and treatment method |
Non-Patent Citations (2)
| Title |
|---|
| 籍继花: "浅谈电吸附技术在水处理工艺中的应用", 《山西建筑》 * |
| 董颖博等: "《环境矿物材料》", 31 March 2020, 冶金工业出版社 * |
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Application publication date: 20210924 |