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介绍了印制电路板废水中的含镍废水、含氰废水、无机水洗废水回用处理的工程设计及运行,采用“预处理+p H调整+混凝沉淀+物理过滤+DF系统+膜处理”工艺。实际运行结果表明,该工艺运行稳定,经济可行。出水COD≤32 mg/L,SS、Cu、Ni的质量浓度分别≤19、≤0.39、≤0.11 mg/L,CN-未检测出,p H为7.5,水质达到GB/T 19923-2005和GB 21900-2008)的回用及排放标准,可为目前PCB废水的回用处理提供技术借鉴。
This paper introduces the engineering design and operation of nickel-containing waste water, cyanide-containing waste water and inorganic washable waste water in PCB waste water treatment. The “pre-treatment + p H adjustment + coagulation sedimentation + physical filtration + DF system + membrane Handle ”process. The actual operation results show that the process is stable and economically feasible. The effluent COD≤32 mg / L, the concentration of SS, Cu, Ni were ≤19, ≤0.39, ≤0.11 mg / L, CN- not detected, p H was 7.5, water quality reached GB / T 19923-2005 and GB 21900-2008) of the reuse and emission standards, for the current PCB wastewater reuse treatment to provide technical reference.