制药废水生化出水的强化混凝—高级氧化深度处理组合工艺比较  

Comparison of enhanced coagulation-advanced oxidation combined processes for tertiary treatment of pharmaceutical wastewater

作　　者：卢钧 陈泉源[1,2] LU Jun;CHEN Quanyuan(School of Environmental Science and Engineering,Donghua University,Shanghai 201620,China;State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry,Shanghai 201620,China)

机构地区：[1]东华大学环境科学与工程学院,上海201620 [2]国家环保工程纺织工业污染治理工程中心,上海201620

出　　处：《化工环保》2021年第2期161-167,共7页Environmental Protection of Chemical Industry

基　　金：国家重点研究发展计划项目(2019YFC0408503);中央高校基本科研专项资金项目(CUSF-DH-D-2019082,19D311306)。

摘　　要：采用强化混凝和高级氧化法对制药废水生化出水进行深度处理,比较了不同混凝剂、不同氧化方法(包括Na_(2)S_(2)O_(8)氧化、电化学氧化、Fenton/类Fenton氧化)的处理效果。实验结果表明:经聚合硫酸铁与聚丙烯酰胺强化混凝处理后,废水的COD去除率达18.5%;强化混凝与不同氧化方法联用均可使废水脱色至无色,COD去除率达70.1%~92.4%。强化混凝—电化学氧化组合工艺的出水COD为27.1 mg/L,达到GB 8978—1996《污水综合排放标准》一级标准限值要求,且成本较低,适于实际应用。The enhanced coagulation and advanced oxidation methods were adopted for tertiary treatment of the biological effluent of pharmaceutical wastewater.The treatment effects of different coagulants and different oxidation methods(including Na_(2)S_(2)O_(8) oxidation,electrochemical oxidation and Fenton without Fe2+addition/Fenton-like oxidation)were compared.The results show that:After the wastewater is treated by enhanced coagulation with poly-ferric sulfate and PAM,the COD removal rate reaches 18.5%;Combined with different oxidation methods,the wastewater is decolorized completely and the COD removal rate reaches 70.1%-92.4%.The effluent COD by the combination process of enhanced coagulation-electrochemical oxidation is 27.1 mg/L,which meets the requirement of I-class standard of China GB 8978-1996.Furthermore,the process is appropriate for application with low cost.

关 键 词：制药废水 生化出水 深度处理 强化混凝 Na2S2O8氧化 电化学氧化 Fenton/类Fenton氧化 

分 类 号：X781.2[环境科学与工程—环境工程]