三氯化铁絮凝沉淀和生化组合工艺处理百菌清生产工艺废水  

Treatment of Wastewater from Chlorothalonil Pesticide Production by a Combined Process of Ferric Chloride Flocculation and Biochemical System

作　　者：周解臻 王祎 石旭 韩卫清[1] 孙秀云[1] 李健生[1] 沈锦优[1] Zhou Xie-zhen;Wang Yi;Shi Xu;Han Wei-qing;Sun Xiu-yun;Li Jian-sheng;Shen Jin-you(School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;Zhangjiagang Foreign Language School, Jiangsu Zhangjiagang 215600, China)

机构地区：[1]南京理工大学环境与生物工程学院,南京210094 [2]江苏省张家港外国语学校,江苏张家港215600

出　　处：《现代农药》2019年第2期17-20,23,共5页MODERN AGROCHEMICALS

摘　　要：百菌清生产过程中产生的废水具有高毒、高化学需氧量(COD)和高氨氮含量及高盐分等特点,采用三氯化铁絮凝沉淀—蒸发—上流式厌氧污泥床—接触氧化—反硝化/硝化—脱色斜管沉淀组合工艺进行处理。运行结果表明,三氯化铁絮凝沉淀可以有效降低废水中的高毒性氰离子和COD含量;蒸发处理可以有效去除盐分及部分氨氮;厌氧生化处理可以将预处理后残留的间苯二腈等有机物降解,转化为小分子酸,从而提高废水的可生化性;整个生化系统可以有效降低百菌清生产废水的COD和氨氮质量浓度。百菌清生产废水经处理后,可以达标排放。The wastewater of a pesticide factory exhibited high toxicity, high COD and high ammonia-nitrogen. A combined treatment process of ferric chloride flocculation, evaporation, upflow anaerobic sludge blanket (UASB), biological contact oxidation, denitrification/nitrification, inclined tube sedimentation was employed. The results showed the majority of CN- can be removed by the ferric chloride flocculation. Furthermore, the UASB process could converse the isophtalonitrile into short-chain carboxylic acids. The biochemical system could effectively reduce the amounts of COD and ammonia-nitrogen. The effluent quality could comply with integrated wastewater discharge standard after the treatment processes.

关 键 词：百菌清 间苯二腈 废水 厌氧 组合处理工艺 

分 类 号：X786[环境科学与工程—环境工程]