As a new type of coating technology, electrophoretic coating has been widely used in automobile, household appliances, electromechanical, instrumentation, hardware and other industries. As it can further improve the coating quality, reduce the coating cost, reduce environmental pollution, and produce more significant economic and social benefits, the application of membrane separation technology in electrophoretic coating has been well popularized.
Ultrafiltration system (UF) is the key equipment in the electrophoresis coating line. Its main purpose for the electrophoresis line is to obtain deionized water and paint solvent from the electrophoresis tank through ultrafiltration, provide flushing water for electrophoresis parts, and clean the excess electrophoretic paint attached to the electrophoresis workpiece and return to the electrophoresis tank. In this way, the electrophoretic paint on the surface of the workpiece can be recycled and closed-circuit circulation can be realized, which can save 30% of the cost of purchasing electrophoretic paint for enterprises; Secondly, part of the ultrafiltration can be discharged to remove the impurity ions brought into the electrophoresis tank during the painting process, so that the impurity content of the working fluid of the electrophoresis tank can be kept within the range of the conductivity and pH value specified by the process. The ultrafilter can be recycled to replace the deionized water as the washing water of the work piece after electrophoresis. Basically, there is no discharge of the electrophoretic paint, which avoids the negative treatment of the waste water discharged from the direct cleaning of the deionized water Lotus, reduce environmental pollution.
In the process of electrophoretic coating, reverse osmosis (RO) is mainly used for the production of pure water for coating process, and then it is combined with UF device to ro UF liquid, and then used as washing water after ro. The complete closed cycle is implemented to achieve zero discharge.
In the traditional washing process after electrophoresis, UF device is used to recycle the electrophoretic paint. At the same time, the UF solution is introduced into each cleaning tank to clean the workpiece in the reverse process flow direction. Finally, pure water is used to wash the workpiece once, and the cleaning solution is usually discharged. At present, RO is usually used to separate the UF solution after UF, and the permeate solution is used to replace pure water for the last stage of electrophoresis and washing, so as to form a complete closed circuit for electrophoresis and post washing, so as to improve the utilization rate of electrophoretic paint, save pure water and reduce the load of wastewater treatment.
As a new type of coating technology, electrophoretic coating has been widely used in automobile, household appliances, electromechanical, instrumentation, hardware and other industries. As it can further improve the coating quality, reduce the coating cost, reduce environmental pollution, and produce more significant economic and social benefits, the application of membrane separation technology in electrophoretic coating has been well popularized.
Ultrafiltration system (UF) is the key equipment in the electrophoresis coating line. Its main purpose for the electrophoresis line is to obtain deionized water and paint solvent from the electrophoresis tank through ultrafiltration, provide flushing water for electrophoresis parts, and clean the excess electrophoretic paint attached to the electrophoresis workpiece and return to the electrophoresis tank. In this way, the electrophoretic paint on the surface of the workpiece can be recycled and closed-circuit circulation can be realized, which can save 30% of the cost of purchasing electrophoretic paint for enterprises; Secondly, part of the ultrafiltration can be discharged to remove the impurity ions brought into the electrophoresis tank during the painting process, so that the impurity content of the working fluid of the electrophoresis tank can be kept within the range of the conductivity and pH value specified by the process. The ultrafilter can be recycled to replace the deionized water as the washing water of the work piece after electrophoresis. Basically, there is no discharge of the electrophoretic paint, which avoids the negative treatment of the waste water discharged from the direct cleaning of the deionized water Lotus, reduce environmental pollution.
In the process of electrophoretic coating, reverse osmosis (RO) is mainly used for the production of pure water for coating process, and then it is combined with UF device to ro UF liquid, and then used as washing water after ro. The complete closed cycle is implemented to achieve zero discharge.
In the traditional washing process after electrophoresis, UF device is used to recycle the electrophoretic paint. At the same time, the UF solution is introduced into each cleaning tank to clean the workpiece in the reverse process flow direction. Finally, pure water is used to wash the workpiece once, and the cleaning solution is usually discharged. At present, RO is usually used to separate the UF solution after UF, and the permeate solution is used to replace pure water for the last stage of electrophoresis and washing, so as to form a complete closed circuit for electrophoresis and post washing, so as to improve the utilization rate of electrophoretic paint, save pure water and reduce the load of wastewater treatment.
