Treatment and reuse of polyvinyl chloride centrifugal mother liquor wastewater Engineering example
PVC centrifugal mother liquor wastewater has the characteristics of low COD concentration,high SS concentration and poor biodegradability.The centrifugal mother liquor wastewater of a new polyvinyl chloride plant in a domestic chemical plant is reused using the combined process of cooling tower + regulating tank + hydrolysis acidification tank + contact oxidation tank + secondary sedimentation tank + multi-media sand filter + ozone advanced oxidation(AOP)+ biological activated carbon(BAC)+ water purification carbon filter + ion exchange bed + terminal filtration.Under the conditions of inlet index COD169 mg/L,turbidity 50 NTU and conductivity 257 μs/cm,the effluent index can reach the level of COD1.22 mg/L,turbidity 0.28 NTU and conductivity 0.9 μs/cm,and the effluent can reach the standard of pure water quality.
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