How to clean the wastewater from printed circuit board processing ?

Flat ceramic membrane module is a new core component used in membrane bioreactor (MBR) system. It is composed of flat membrane element, membrane support frame and aeration system. The aeration system can send the air into the air water mixing space through the aeration pipe at the bottom of the membrane module, and then reach the membrane part after mixing evenly. The guide rail slot of the membrane rack evenly distributes and fixes the flat ceramic membrane, so that each membrane element can be effectively washed by air and water. The structural design of the flat ceramic membrane is more conducive to cleaning the surface of the dirt, more resistant to pollution, and can run stably for a long time. In addition, the structure of the flat ceramic membrane is more simple, whether it is offline cleaning and replacing the membrane are changed and convenient.

In the production of printed circuit board (PCB), the waste water has a large output, and the components of pollutants are complex, and the environmental hazards are great, which contains a large number of heavy metal ions and toxic substances, if not handled properly, it will cause serious harm. In order to treat PCB wastewater by MBR process, the high concentration copper ion and degreased organic matter should be settled first, and then the wastewater should be regulated in the regulating tank, and finally in the reaction tank and membrane system.

However, the content of COD is high in PCB water, which requires higher sludge concentration to improve the treatment efficiency. However, conventional MBR hollow fiber membrane module is easy to tangle and break in long-term operation under the condition of high sludge concentration, which leads to difficult maintenance and short service life. At this time, MBR flat ceramic membrane which can withstand higher sludge concentration is a better choice, which can improve the treatment efficiency of the system, ensure the quality of effluent, and maintain the stable operation of the system.