微电解+UASB+两级A/O+絮凝工艺处理医药废水

Pharmaceutical Production Wastewater Treatment by Micro-electrolysis,UASB,Two-stage A/O and Flocculation

某医药化工厂废水中含有难降解的苯类及其衍生物,采用微电解+UASB+两级A/O+絮凝处理工艺,介绍了工艺选择依据、主要处理流程和去除效果等。运行结果显示,该工艺对COD、BOD5、NH3-N、SS的去除率分别达到97.1%、92.4%、88.9%、86.4%,相应出水水质分别为280、130、40、95 mg/L,优于《污水综合排放标准》(GB 8978—1996)表4中三级排放标准,满足污水处理厂纳管水质要求,运行费用为3.45元/m3。

A combined process of iron-carbon micro-electrolysis, UASB, two-stage A/O,flocculation was adopted to treat pharmaceutical production wastewater which contains refractory benzene and its derivatives. The process selection basis, the major process flow and removal effect were introduced. The operation result shows that the removal rates of COD,BOD5,NH3-N and SS were97. 1%,92. 4%,88. 9%,and 86. 4%,respectively,and the corresponding effluent concentrations were 280 mg/L,130 mg/L,40 mg/L and 95 mg/L,respectively. The effluent quality are superior to the third level in table 4 of Integrated Wastewater Discharge Standard( GB 8978-1996) and could meet the intake water quality requirements of sewage pipelines,with the operation cost of 3. 45 yuan/m^3.