CN210237819U - Double-membrane method electrophoretic coating cleaning wastewater recovery device - Google Patents
Double-membrane method electrophoretic coating cleaning wastewater recovery device Download PDFInfo
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- CN210237819U CN210237819U CN201920976104.4U CN201920976104U CN210237819U CN 210237819 U CN210237819 U CN 210237819U CN 201920976104 U CN201920976104 U CN 201920976104U CN 210237819 U CN210237819 U CN 210237819U
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Abstract
The utility model provides a two membrane process electrophoresis application washing wastewater recovery unit, including work piece transmission band, electrophoresis tank, UF ultrafiltration device, UF ultrafiltration water storage tank, EDRO washs and seals recovery unit, EDRO storage tank, first washing tank, second washing tank, third washing tank and washing unit, each subassembly passes through the pipeline intercommunication, and its area is little, and the investment is little, is used for the recovery of electrophoresis washing wastewater to recycle, the utility model discloses a closed system, no waste water discharge, in the electrophoresis application cleaning process, wash water cyclic regeneration, repeatedly usable electrophoresis coating washs, and in addition, the whole recoveries of electrophoresis coating composition to in the input electrophoresis, practiced thrift coating use cost by a wide margin, not only improved enterprise's profit, simultaneously, also reduced environmental pollution, green.
Description
Technical Field
The utility model relates to an electrophoresis waste water treatment technical field, especially two embrane methods electrophoresis application washing wastewater recovery unit.
Background
The electrophoretic coating is an immersion coating method that a metal workpiece is immersed in water-soluble electrophoretic coating bath solution and is subjected to reactions such as electrolysis, electrophoresis, electrodeposition, electroosmosis and the like under the action of an electric field so as to precipitate a uniform coating on the surface of the workpiece. As a special dip coating, the coated object inevitably carries some electrophoretic paint due to physical adsorption, and the attached electrophoretic paint needs to be washed away in order to ensure the brightness of the surface of the coated object.
At present, pure water is generally used for washing in China, and in order to ensure the cleanliness of washed workpieces, the solid content of electrophoretic paint in a washing tank must be strictly controlled, the pure water needs to be continuously supplemented into the washing tank for diluting and cleaning the content of electrophoretic paint components in water, and in addition, the pure water cannot overflow to a previous procedure because of being sourced from the outside of an electrophoretic coating system, otherwise, the balance of electrophoretic tank liquid is influenced, so the pure water must be discharged outside. Therefore, the recycling rate of the wastewater is low, the subsequent treatment difficulty and cost are increased, the treatment effect cannot be expected, a large amount of pure water and electrophoretic paint are wasted, and the electrophoretic cost is greatly increased.
SUMMERY OF THE UTILITY MODEL
The utility model is directed at the above-mentioned problem to a two membrane method electrophoresis application washing wastewater recovery unit has been proposed.
The specific technical scheme is as follows:
the double-membrane electrophoretic coating cleaning wastewater recovery device is characterized by comprising a workpiece conveying belt, an electrophoresis tank, an UF ultrafiltration device, an UF ultrafiltration water storage tank, an EDRO cleaning closed recovery device, an EDRO storage tank, a first cleaning tank, a second cleaning tank, a third cleaning tank and a water cleaning device, wherein the workpiece conveying belt is arranged along the directions of the electrophoresis tank, the first cleaning tank, the second cleaning tank and the third cleaning tank, the electrophoresis tank, the first cleaning tank, the second cleaning tank and the third cleaning tank are sequentially arranged and communicated in a reverse overflow mode, namely the third cleaning tank overflows to the second cleaning tank, the second cleaning tank overflows to the first cleaning tank, and the first cleaning tank overflows to the electrophoresis tank;
the washing device comprises a first washing device, a second washing device, a third washing device, a fourth washing device and a fifth washing device, wherein the first washing device is arranged above the first washing tank, the second washing device is arranged above the second washing tank, the third washing device is arranged between the second washing tank and the third washing tank, the fourth washing device is arranged above the third washing tank, and the fifth washing device is arranged on one side of the third washing tank;
a first-stage conveying pipeline is connected to the first cleaning tank, a second-stage conveying pipeline is connected to the third cleaning tank, the first-stage conveying pipeline is connected with the first washing device and the second washing device to supply water for the first washing device and the second washing device, and the second-stage conveying pipeline is connected with the fourth washing device to supply water for the fourth washing device;
the electrophoresis tank is connected with the UF ultrafiltration device through an electrophoresis liquid conveying pipeline, the UF ultrafiltration device is provided with a UF concentrated liquid return pipeline and a UF permeating liquid conveying pipeline, the UF concentrated liquid return pipeline is communicated with the electrophoresis tank, the UF permeating liquid conveying pipeline is communicated with a UF ultrafiltration water storage tank, the UF ultrafiltration water storage tank is provided with a first ultrafiltration water conveying pipeline and a second ultrafiltration water conveying pipeline, the first ultrafiltration water conveying pipeline is connected with a third washing device and supplies water for the third washing device, the second ultrafiltration water conveying pipeline is connected with an EDRO cleaning closed recovery device and supplies water for the EDRO cleaning closed recovery device, the EDRO cleaning closed recovery device comprises an EDRO concentrated liquid return pipeline and an EDRO permeating liquid conveying pipeline, the EDRO concentrated liquid return pipeline is communicated with the UF ultrafiltration water storage tank, the EDRO storage tank is communicated with an EDRO storage tank, and the fifth washing device are connected through a three-level conveying pipeline, and supplying water to the fifth water washing device.
The recovery device for the washing wastewater of the double-membrane electrophoretic coating comprises a first-stage conveying pipeline, a second-stage conveying pipeline, a first ultrafiltration water conveying pipeline, a second ultrafiltration water conveying pipeline and a third-stage conveying pipeline, wherein circulating pumps are arranged on the first-stage conveying pipeline, the second-stage conveying pipeline, the first ultrafiltration water conveying pipeline, the second ultrafiltration water conveying pipeline and the third-stage conveying pipeline.
The above recovery device for the cleaning wastewater of the double-membrane electrophoretic coating process, wherein the washing device is one or a combination of a spray washing device and a soaking washing device.
The double-membrane electrophoretic coating cleaning wastewater recovery device is characterized in that the liquid levels in the first cleaning tank, the second cleaning tank and the third cleaning tank are gradually increased, and the liquid level difference value of the adjacent cleaning tanks is 10-20 cm.
The above-mentioned two-membrane method electrophoretic coating washing wastewater recovery unit, wherein, the washing wastewater recycling apparatus's wastewater recovery method is as follows:
(1) the electrophoresis tank liquid in the electrophoresis tank enters an UF ultrafiltration device through an electrophoresis liquid conveying pipeline, and is ultrafiltered by the UF ultrafiltration device to obtain concentrated electrophoresis tank liquid and ultrafiltration permeate liquid, the concentrated electrophoresis tank liquid flows back to the electrophoresis tank through an UF concentrated liquid return pipeline, and the ultrafiltration permeate liquid is conveyed into an UF ultrafiltration water storage tank through an UF permeate liquid conveying pipeline;
(2) the UF permeate entering the UF ultrafiltration water storage tank supplies water for the third washing device through a first ultrafiltration water conveying pipeline, and continuously conveys the UF permeate to the EDRO cleaning closed recovery device through a second ultrafiltration water conveying pipeline for reverse osmosis concentration treatment;
(3) and (3) carrying out reverse osmosis concentration treatment on the ultrafiltration permeate liquid entering the EDRO cleaning closed recovery device to obtain concentrated UF permeate liquid and EDRO permeate liquid, wherein the concentrated UF permeate liquid flows back to the UF ultrafiltration water storage tank through an EDRO concentrate return pipeline, and the EDRO permeate liquid enters the EDRO storage tank through an EDRO permeate liquid conveying pipeline and supplies water for the fifth washing device through a three-stage conveying pipeline.
The above two-membrane electrophoretic coating cleaning wastewater recovery device, wherein the method for electrophoretic cleaning using the cleaning wastewater recovery and reuse equipment, specifically comprises the following steps:
(a) after the electrophoresis of the workpiece in the electrophoresis tank is finished, the workpiece is conveyed to a first cleaning tank through a workpiece conveying belt, the first cleaning is carried out through a first cleaning device, cleaning water used by the first cleaning device is supplied by a second cleaning tank and is conveyed by a primary conveying pipeline, and the cleaning water which finishes the first cleaning falls into the first cleaning tank and overflows into the electrophoresis tank;
(b) after the first washing is finished, the workpiece continuously moves through the workpiece conveying belt and sequentially enters a second washing device and a third washing device to be washed for the second time and the third time, washing water used by the second washing device is supplied by a second washing tank and is conveyed by a first-stage conveying pipeline, the washing water used for washing for the second time falls into the second washing tank and overflows into a first washing tank, washing water used by the third washing device is supplied by a UF ultrafiltration water storage tank and is conveyed by a first ultrafiltration water conveying pipeline, the washing water used for washing for the third time falls into the second washing tank and overflows step by step in the direction opposite to the electrophoretic tank;
(c) after the third washing is finished, the workpiece moves to a third washing tank through a workpiece conveying belt, fourth washing is carried out through a fourth washing device, washing water used by the fourth washing device is supplied by the third washing tank and is conveyed through a secondary conveying pipeline, the washing water in the fourth washing device is EDRO penetrating liquid for finishing the fifth washing, the washing water for finishing the fourth washing falls into the third washing tank, and the fourth washing water overflows in a step-by-step manner in the direction of the electrophoresis tank against the station;
(d) after the fourth washing, the workpiece continuously moves through the workpiece conveying belt and is conveyed to the fifth washing device to be washed for the fifth time, the washing water used by the fifth washing device is EDRO permeating liquid and is supplied by an EDRO storage tank, and the washing water used for the fifth washing falls into a third washing tank through a three-level conveying pipeline to be used for the fourth washing and overflows step by step in the direction of the electrophoresis tank from the reverse station.
The recovery device for the electrophoretic coating cleaning wastewater by the double-membrane method is characterized in that the recovery efficiency of the UF ultrafiltration device is 95%.
The above-mentioned two-membrane process electrophoretic coating washs waste water recovery unit, wherein, EDRO washs and seals recovery unit's concentration multiple and is 3 times.
The utility model has the advantages that:
the utility model provides a two membrane process electrophoresis application washing wastewater recovery unit, including work piece transmission band, electrophoresis tank, UF ultrafiltration device, UF ultrafiltration water storage tank, EDRO washs and seals recovery unit, EDRO storage tank, first washing tank, second washing tank, third washing tank and washing unit, each subassembly passes through the pipeline intercommunication, and its area is little, and the investment is little, is used for the recovery of electrophoresis washing wastewater to recycle, the utility model discloses a closed system, no waste water discharge, in the electrophoresis application cleaning process, wash water cyclic regeneration, repeatedly usable electrophoresis coating washs, and in addition, the whole recoveries of electrophoresis coating composition to in the input electrophoresis, practiced thrift coating use cost by a wide margin, not only improved enterprise's profit, simultaneously, also reduced environmental pollution, green.
Drawings
Fig. 1 is a schematic view of the present invention.
Detailed Description
For making the technical scheme of the utility model clear more clearly and definitely, it is right to combine the embodiment below the utility model discloses it is further described, any right the utility model discloses technical scheme's technical characteristic carries out the scheme that equivalent replacement and conventional reasoning reachs and all falls into the utility model discloses protection scope.
Example one
The double-membrane electrophoretic coating cleaning wastewater recovery device is characterized by comprising a workpiece conveying belt 1, an electrophoresis tank 2, an UF ultrafiltration device 3, an UF ultrafiltration water storage tank 4, an EDRO cleaning closed recovery device 5, an EDRO storage tank 13, a first cleaning tank 6, a second cleaning tank 7, a third cleaning tank 8 and a water cleaning device 9, wherein the workpiece conveying belt 1 is arranged along the directions of the electrophoresis tank 2, the first cleaning tank 6, the second cleaning tank 7 and the third cleaning tank 8, the electrophoresis tank 2, the first cleaning tank 6, the second cleaning tank 7 and the third cleaning tank 8 are sequentially arranged and communicated in a reverse overflow mode, namely the third cleaning tank 8 overflows to the second cleaning tank 7, the second cleaning tank 7 overflows to the first cleaning tank 6, and the first cleaning tank 6 overflows to the electrophoresis tank 2;
the washing device 9 comprises a first washing device 91, a second washing device 92, a third washing device 93, a fourth washing device 94 and a fifth washing device 95, wherein the first washing device 91 is arranged above the first washing tank 6, the second washing device 92 is arranged above the second washing tank 7, the third washing device 93 is arranged between the second washing tank 7 and the third washing tank 8, the fourth washing device 94 is arranged above the third washing tank 8, and the fifth washing device 95 is arranged on one side of the third washing tank 8;
a first-stage conveying pipeline 101 is connected to the first cleaning tank 6, a second-stage conveying pipeline 102 is connected to the third cleaning tank 8, the first-stage conveying pipeline 101 is connected with the first water washing device 91 and the second water washing device 92 to supply water to the first water washing device 91 and the second water washing device 92, and the second-stage conveying pipeline 102 is connected with the fourth water washing device 94 to supply water to the fourth water washing device 94;
the electrophoresis tank 2 and the UF ultrafiltration device 3 are connected through an electrophoresis liquid conveying pipeline 104, the UF ultrafiltration device 3 is provided with an UF concentrated liquid return pipeline 105 and an UF permeated liquid conveying pipeline 106, the UF concentrated liquid return pipeline 105 is communicated with the electrophoresis tank 2, the UF permeated liquid conveying pipeline 106 is communicated with an UF ultrafiltration water storage tank 4, the UF ultrafiltration water storage tank 4 is provided with a first ultrafiltration water conveying pipeline 107 and a second ultrafiltration water conveying pipeline 108, the first ultrafiltration water conveying pipeline 107 is connected with a third water washing device 93 to supply water to the third water washing device 93, the second ultrafiltration water conveying pipeline 108 is connected with an EDRO cleaning closed recovery device 5 to supply water to the EDRO cleaning closed recovery device 5, the EDRO cleaning closed recovery device 5 comprises an EDRO concentrated liquid return pipeline 109 and an EDRO permeated liquid conveying pipeline 110, the EDRO concentrated liquid return pipeline 109 is communicated with the UF ultrafiltration water storage tank 4, the EDRO permeate liquid conveying pipeline 110 is communicated with the EDRO storage tank 13, and the EDRO storage tank 13 is connected with the fifth washing device 95 through the third-level conveying pipeline 103 and supplies water for the fifth washing device 95.
Wherein, all be equipped with the circulating pump on one-level pipeline 101, second grade pipeline 102, first ultrafiltration water pipeline 107, second ultrafiltration water pipeline 108 and the tertiary pipeline 103, washing unit 9 is for spraying washing unit or soaking washing unit 9's one kind or multiple combination, the liquid level is ascending step by step in first washing tank 6, second washing tank 7, the third washing tank 8, and the liquid level difference of adjacent washing tank is 10 ~ 20 cm.
The washing wastewater recycling equipment in the embodiment is used for recycling electrophoresis washing wastewater, and the washing wastewater is subjected to double-membrane treatment and regeneration through the UF ultrafiltration device and the EDRO cleaning closed recovery device, so that the occupied area is small, and the investment is small.
Example two
In the first embodiment, the wastewater recycling method of the cleaning wastewater recycling apparatus is as follows:
(1) the electrophoresis tank liquid in the electrophoresis tank enters an UF ultrafiltration device through an electrophoresis liquid conveying pipeline, and is ultrafiltered by the UF ultrafiltration device to obtain concentrated electrophoresis tank liquid and ultrafiltration permeate liquid, the concentrated electrophoresis tank liquid flows back to the electrophoresis tank through an UF concentrated liquid return pipeline, and the ultrafiltration permeate liquid is conveyed into an UF ultrafiltration water storage tank through an UF permeate liquid conveying pipeline;
(2) the UF permeate entering the UF ultrafiltration water storage tank supplies water for the third washing device through a first ultrafiltration water conveying pipeline, and continuously conveys the UF permeate to the EDRO cleaning closed recovery device through a second ultrafiltration water conveying pipeline for reverse osmosis concentration treatment;
(3) and (3) carrying out reverse osmosis concentration treatment on the ultrafiltration permeate liquid entering the EDRO cleaning closed recovery device to obtain concentrated UF permeate liquid and EDRO permeate liquid, wherein the concentrated UF permeate liquid flows back to the UF ultrafiltration water storage tank through an EDRO concentrate return pipeline, and the EDRO permeate liquid enters the EDRO storage tank through an EDRO permeate liquid conveying pipeline and supplies water for the fifth washing device through a three-stage conveying pipeline.
Wherein, the recovery efficiency of the UF ultrafiltration device is 95%, and the concentration multiple of the EDRO cleaning closed recovery device is 3 times.
In step (1) of this example, 95% of the resin, solvent, impurity ions, and the like in the solution of the electrophoresis tank are concentrated and recovered, and then returned to the electrophoresis tank, and the remaining 5% of the solution remains in the ultrafiltration permeate, and is stored in the UF ultrafiltration water storage tank;
in the step (2), part of the ultrafiltration permeating liquid stored in the UF ultrafiltration water storage tank is used for supplying to a third water washing device, and the rest ultrafiltration permeating liquid is sent to an EDRO cleaning closed recovery device for reverse osmosis concentration treatment;
in the reverse osmosis concentration treatment process, concentrated UF permeate and EDRO permeate are generated, the concentration of the concentrated UF permeate is about 3 times of that of the original UF permeate, the concentrated UF permeate flows back to the UF ultrafiltration water storage tank and participates in the supply of the third water washing device and the continuous reverse osmosis concentration treatment together with the subsequently supplemented UF permeate, and therefore, the contents of substances such as resin, solvent and impurity ions in the UF ultrafiltration water storage tank are relatively in a stable state and can be continuously used for supplying the third water washing device;
the obtained EDRO permeate is pure cleaning water, the contents of substances such as resin, solvent, impurity ions and the like in the EDRO permeate are extremely low, the conductivity is extremely low, the EDRO permeate completely meets the requirement of final-stage water washing, and the EDRO permeate is stored in an EDRO storage tank and supplies water for a fifth water washing device.
The embodiment firstly recovers the resin, the solvent, the impurity ions and other substances in the electrophoresis tank liquid through the UF ultrafiltration device, saves the coating cost of electrophoresis, subsequently enables the UF permeate to participate in water washing, recovers the concentrated UF permeate to continuously perform reverse osmosis, enables the resin, the solvent, the impurity ions and other substances not to run off, saves the coating cost of electrophoresis again, finally obtains the EDRO permeate, has extremely low conductivity, completely meets the requirement of water washing, has extremely high utilization rate of the washing water, basically realizes zero emission of the washing water, and greatly reduces the use cost of pure water.
In consideration of the evaporation and spraying conditions in the actual use process, a very small amount of pure water needs to be supplemented at intervals to participate in the wastewater recovery.
EXAMPLE III
This example specifically illustrates a method for performing electrophoretic cleaning using the apparatus for recycling and reusing cleaning wastewater, based on the first and second examples, as follows:
(a) after the electrophoresis of the workpiece in the electrophoresis tank is finished, the workpiece is conveyed to a first cleaning tank through a workpiece conveying belt, the first cleaning is carried out through a first cleaning device, cleaning water used by the first cleaning device is supplied by a second cleaning tank and is conveyed by a primary conveying pipeline, and the cleaning water which finishes the first cleaning falls into the first cleaning tank and overflows into the electrophoresis tank;
(b) after the first washing is finished, the workpiece continuously moves through the workpiece conveying belt and sequentially enters a second washing device and a third washing device to be washed for the second time and the third time, washing water used by the second washing device is supplied by a second washing tank and is conveyed by a first-stage conveying pipeline, the washing water used for washing for the second time falls into the second washing tank and overflows into a first washing tank, washing water used by the third washing device is supplied by a UF ultrafiltration water storage tank and is conveyed by a first ultrafiltration water conveying pipeline, the washing water used for washing for the third time falls into the second washing tank and overflows step by step in the direction opposite to the electrophoretic tank;
(c) after the third washing is finished, the workpiece moves to a third washing tank through a workpiece conveying belt, fourth washing is carried out through a fourth washing device, washing water used by the fourth washing device is supplied by the third washing tank and is conveyed through a secondary conveying pipeline, the washing water in the fourth washing device is EDRO penetrating liquid for finishing the fifth washing, the washing water for finishing the fourth washing falls into the third washing tank, and the fourth washing water overflows in a step-by-step manner in the direction of the electrophoresis tank against the station;
(d) after the fourth washing, the workpiece continuously moves through the workpiece conveying belt and is conveyed to the fifth washing device to be washed for the fifth time, the washing water used by the fifth washing device is EDRO permeating liquid and is supplied by an EDRO storage tank, and the washing water used for the fifth washing falls into a third washing tank through a three-level conveying pipeline to be used for the fourth washing and overflows step by step in the direction of the electrophoresis tank from the reverse station.
In the embodiment, the workpiece is cleaned along the station, and the cleaning water overflows against the station until the workpiece returns to the electrophoresis tank;
in the cleaning process, the cleaning water used by the fifth water cleaning device is EDRO permeate liquid which is pure cleaning water, the conductivity of the cleaning water is extremely low, and the cleaning water meets the requirements of a cleaning process;
the third washing tank receives the washing water for completing the fifth washing and the fourth washing, the conductivity of the washing water is slightly larger than the EDRO permeate liquid and smaller than the ultrafiltration permeate liquid in the UF ultrafiltration water storage tank, and the washing water can be used for the fourth washing;
the third washing directly uses ultrafiltration permeating liquid in a UF ultrafiltration water storage tank for washing, washing water after washing enters a second washing tank, the second washing tank receives the washing water of the third washing, and simultaneously receives the washing water of the second washing and the washing water overflowing from a third washing tank, so that the conductivity of the washing water in the second washing tank is higher than that of the ultrafiltration permeating liquid, but the requirements of a plurality of washing processes before electrophoresis are met, and the ultrafiltration permeating liquid can be used for the first washing and the second washing;
the first cleaning tank receives cleaning water after the first water washing and cleaning water overflowed from the second cleaning tank, the conductivity of the first cleaning tank is extremely high due to the fact that the cleaning water after the first water washing is received, the content of substances such as resin, solvent and impurity ions in the first cleaning tank is high and is close to electrophoresis tank liquid, the cleaning water in the first cleaning tank overflows to the electrophoresis tank, and electrophoresis paint components return to the electrophoresis tank to participate in electrophoresis again;
in the embodiment, the conductivity of the used cleaning water and the cleaning water received by the cleaning tank is reduced along the station, the requirement of cleaning the electrophoresis workpiece after electrophoresis is met, the cleaning water overflows along the station and returns to the electrophoresis tank in the cleaning procedure, the recovery rate of the components of the electrophoresis coating is extremely high, the electrophoresis cost is greatly reduced, and meanwhile, the wastewater treatment is not needed, and the wastewater treatment cost is greatly saved.
To sum up the above embodiment, the utility model discloses a closed system, no waste water discharge, in the electrophoresis application cleaning process, wash water circulation regeneration, can repeatedly be used for the electrophoretic paint to wash, moreover, the electrophoretic paint composition is whole to be retrieved to in dropping into the electrophoresis, practiced thrift coating use cost by a wide margin, not only improved the profit of enterprise, simultaneously, also reduced environmental pollution, green.
Based on the washing water loss that exists in the use, the utility model discloses need the very little pure water of spaced replenishment, nevertheless compare with the old-fashioned pure water that washs the loss, its volume can be ignored.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. The double-membrane electrophoretic coating cleaning wastewater recovery device is characterized by comprising a workpiece conveying belt, an electrophoresis tank, an UF ultrafiltration device, an UF ultrafiltration water storage tank, an EDRO cleaning closed recovery device, an EDRO storage tank, a first cleaning tank, a second cleaning tank, a third cleaning tank and a water cleaning device, wherein the workpiece conveying belt is arranged along the directions of the electrophoresis tank, the first cleaning tank, the second cleaning tank and the third cleaning tank, the electrophoresis tank, the first cleaning tank, the second cleaning tank and the third cleaning tank are sequentially arranged and communicated in a reverse overflow mode, namely the third cleaning tank overflows to the second cleaning tank, the second cleaning tank overflows to the first cleaning tank, and the first cleaning tank overflows to the electrophoresis tank;
the washing device comprises a first washing device, a second washing device, a third washing device, a fourth washing device and a fifth washing device, wherein the first washing device is arranged above the first washing tank, the second washing device is arranged above the second washing tank, the third washing device is arranged between the second washing tank and the third washing tank, the fourth washing device is arranged above the third washing tank, and the fifth washing device is arranged on one side of the third washing tank;
a first-stage conveying pipeline is connected to the first cleaning tank, a second-stage conveying pipeline is connected to the third cleaning tank, the first-stage conveying pipeline is connected with the first washing device and the second washing device to supply water for the first washing device and the second washing device, and the second-stage conveying pipeline is connected with the fourth washing device to supply water for the fourth washing device;
the electrophoresis tank is connected with the UF ultrafiltration device through an electrophoresis liquid conveying pipeline, the UF ultrafiltration device is provided with a UF concentrated liquid return pipeline and a UF permeating liquid conveying pipeline, the UF concentrated liquid return pipeline is communicated with the electrophoresis tank, the UF permeating liquid conveying pipeline is communicated with a UF ultrafiltration water storage tank, the UF ultrafiltration water storage tank is provided with a first ultrafiltration water conveying pipeline and a second ultrafiltration water conveying pipeline, the first ultrafiltration water conveying pipeline is connected with a third washing device and supplies water for the third washing device, the second ultrafiltration water conveying pipeline is connected with an EDRO cleaning closed recovery device and supplies water for the EDRO cleaning closed recovery device, the EDRO cleaning closed recovery device comprises an EDRO concentrated liquid return pipeline and an EDRO permeating liquid conveying pipeline, the EDRO concentrated liquid return pipeline is communicated with the UF ultrafiltration water storage tank, the EDRO storage tank is communicated with an EDRO storage tank, and the fifth washing device are connected through a three-level conveying pipeline, and supplying water to the fifth water washing device.
2. The apparatus for recovering waste water from electrophoretic coating cleaning according to claim 1, wherein the primary transfer line, the secondary transfer line, the first ultrafiltrating water transfer line, the second ultrafiltrating water transfer line and the tertiary transfer line are provided with circulation pumps.
3. The recycling apparatus for wastewater from electrophoretic coating cleaning by two-film method according to claim 2, wherein the washing apparatus is one or more of a spray washing apparatus and a soaking washing apparatus.
4. The recycling apparatus for wastewater from dual-membrane electrophoretic coating cleaning according to claim 3, wherein the liquid levels in the first cleaning tank, the second cleaning tank, and the third cleaning tank are raised step by step, and the difference between the liquid levels in the adjacent cleaning tanks is 10-20 cm.
5. The apparatus for recovering the wastewater from the electrophoretic coating process according to claim 3 or 4, wherein the UF ultrafiltration apparatus has a recovery efficiency of 95%.
6. The recycling apparatus for washing wastewater from double membrane electrocoating according to claim 5, wherein the EDRO washing closed recycling apparatus has a concentration ratio of 3.
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| CN201920976104.4U CN210237819U (en) | 2019-06-26 | 2019-06-26 | Double-membrane method electrophoretic coating cleaning wastewater recovery device |
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| CN201920976104.4U CN210237819U (en) | 2019-06-26 | 2019-06-26 | Double-membrane method electrophoretic coating cleaning wastewater recovery device |
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Effective date of registration: 20200515 Address after: West Town Luyuan District in Jilin province Changchun City Shuanglong Village 130000 Patentee after: ANTE COATING TECH ENGRG Co.,Ltd. Address before: 130000 No. 2 Workshop of Changchun Ante Painting Technology Engineering Co., Ltd., West New Industrial Concentration Area of Changchun Green Park, Jilin Province Patentee before: Jiante Membrane Separation Equipment (Changchun) Co.,Ltd. |