The biochemical treatment project of the 100,000-ton/year PVC centrifugal mother liquor from Shandong Hengtong Chemical Co., Ltd., which was started recently, is expected to be put into use before the Spring Festival. The mother liquor is the product of the polyvinyl chloride slurry after centrifugation. It was mainly treated by the sedimentation, clarification and separation process, and the trace amount of polyvinyl chloride contained therein was directly discharged after being recovered. This not only wastes a lot of water resources, but also affects the environment. Cause a certain amount of influence. The new treatment project adopts two-stage ozone treatment and two-stage biochemical treatment of the centrifuge mother liquor, and finally enters the reverse osmosis membrane to recover the permeate, recovers the trace polyvinyl chloride in the mother liquor, and the effluent is all recycled into the company's circulating water network. So that the device does not have wastewater discharge.
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