The main contaminant in washing wastewater is the anionic surfactant LAS. Washing wastewater is alkaline, the pH is 9~12, COD is 500~600 mg/L. Conventional treatment is biochemical treatment, but it has some disadvantage such as high cost, large floor space and long project cycle.
MEY membrane technology process：
● After the washing wastewater was treated by organic separation membrane, the COD of producing water was less than 100 mg/L；
● The operating pressure of organic separation membrane is low, only 3~5 bar, and the removal rate of salt in water is 10~20%；
● Low cost of investment and operation, high degree of automation, short project cycle.