铁炭Fenton/SBR法处理硝基苯制药废水

Study on Treatment of Nitrobenzene Pharmaceutical Wastewater by Ferric-Carbon Fenton/SBR Process

为探寻硝基苯废水的适宜处理工艺，开展了铁炭Fentort／SBR工艺处理硝基苯制药废水的试验研究。结果表明，铁炭内电解结合Fenton氧化的预处理工艺可有效去除废水中的硝基苯类物质，并提高了废水的可生化性。当原水的pH值为2～3、H2O2投加量为500～600mg／L时，调节预处理出水pH值至7～8并经沉淀处理后，对COD和硝基苯类物质的总去除率分别可达47％和92％。后续混合废水经SBR工艺处理后出水水质能满足国家污水排放标准。

In order to find a suitable treatment process for wastewater containing nitrobenzene, ferric-carbon Fenton/SBR process was used to treat nitrobenzene pharmaceutical wastewater. The results show that the pretreatment process of ferric - carbon inner electrolysis combined with Fenton oxidation can effectively remove nitrobenzene-like substances from wastewater and hence improve the biodegradability. Removal rates for COD and nitrobenzene reach 47% and 92% respectively under the conditions of the influent pH value of 2 -3, HE O2 dosage of 500 -600 mg/L and the pretreated effluent pH value adjusted to 7 - 8. Continuous mixing of wastewater was treated by SBR process and the final effluent quality can meet the national wastewater discharge standard.