电气浮-微电解-生化组合工艺处理农药废水  

Treatment Method of Pesticide Wastewater by a Combined Process of Electrical Flotation,Micro Electrolysis and Biochemical System

作　　者：李舵 王祎 韩卫清[2] 魏永军 江慧 LI Duo;WANG Yi;HAN Weiqing;WEI Yongjun;JIANG Hui(Jiangsu Provincial Ecological Assessment Center,Nanjing 210009,China;School of Environmental and Biological Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]江苏省生态环境评估中心,南京210009 [2]南京理工大学环境与生物工程学院,南京210094

出　　处：《现代农药》2020年第3期25-29,共5页MODERN AGROCHEMICALS

基　　金：国家水体污染控制与治理科技重大专项(2018ZX07208-003)。

摘　　要：针对江苏某农药企业主要产品四聚乙醛、稻瘟灵和杀螺胺废水具有高毒性、难降解、高化学需氧量(COD)、高氨氮(NH3-N)及高盐分的特点,采用"三效蒸发-气提蒸氨-电气浮-微电解-上流式厌氧污泥床-接触氧化-硝化/反硝化-絮凝沉淀"组合工艺进行处理。结果表明,COD去除率可以达99.1%,NH3-N去除率达97.5%,且保证长期稳定运行。出水水质达到GB 8978-1996《污水综合排放标准》三级标准。The wastewater from a pesticide company in Jiangsu whose produces are metaldehyde,isoprothiolane and niclosamide has the characteristics of high toxicity,hard-degradation,high COD,high ammonia-nitrogen and high salinity.A combined treatment process of triple effect evaporation,blowing nitrogen,electrical floatation,micro electrolysis,upflow anaerobic sludge blanket,biological contact oxidation,denitrification/nitrification and flocculating settling was employed.The results showed that the removal rate of COD and ammonia-nitrogen was 99.1%and 97.5%.After treated,the effluent quality could comply with Integrated Wastewater Discharge Standard with the condition of long-term stable running.

关 键 词：农药废水 高毒性 难降解 高浓度 组合工艺 

分 类 号：X786[环境科学与工程—环境工程]