TREATMENT METHOD AND TREATMENT DEVICE FOR WASTEWATER CONTAINING CATIONIC SURFACTANT

摘要

According as e industrial processes multiple cationic surfactants containing multiple RO membrane separation processing by the water recovery, such as, after preventing the RO membrane occlusion by cationic surface active agent, the adherence quality treated water It is obtained stably over a long period. After pH adjustment the cationic surface active agent-containing wastewater, such as the electronics industry process drain to pH 3 ~ 5 claim 1 RO membrane separation device (3) to the RO membrane separation process, and claim 1 RO membrane permeated water of a device (3) a and then pH adjusted to pH 6.5 ~ 10.5, claim 2 RO RO membrane separation in the membrane separator (4) processing, the 2 RO membrane to recover the permeate of the separating device 4 as treated water.