生物和物化组合法深度处理草甘膦废水工艺  

Advanced Treatment of Glyphosate Wastewater Tail Water by a Combining Biological and Physicochemical Methods

作　　者：郑敏 周林成[2] 朱建民 王垚 冯凡 ZHENG Min;ZHOU Lincheng;ZHU Jianmin;WANG Yao;FENG Fan(Zhenjiang Jiangnan Chemical Company Limited,Zhenjiang 212000,China;College of Chemistry and Chemical Engineering,Lanzhou University,Lanzhou 730000,China)

机构地区：[1]镇江江南化工有限公司,江苏镇江212000 [2]兰州大学化学与化工学院,甘肃兰州730000

出　　处：《化学反应工程与工艺》2019年第6期559-563,570,共6页Chemical Reaction Engineering and Technology

摘　　要：为了深度处理草甘膦含磷废水使其达到排放标准,采用了固定化微生物厌氧和好氧生物处理以及聚合氯化铝铁(PAFC)絮凝物化处理相结合的方法,对化学氧化再用循环活性污泥法(CASS)处理后的草甘膦含磷废水进行了一系列的实验研究。考察了组合工艺各个阶段的停留时间、投加量、反应温度等复合工艺运行参数对结果的影响,优化确定了厌氧-好氧结合的生物法最佳操作参数和物化法的最佳投加量。结果表明,在厌氧停留时间为2h,好氧停留时间为6 h,PAFC投加量为20 mg/L的条件下,经过30 d的连续运行实验,新工艺对废水中化学需氧量(COD)的去除率达到95%,总磷去除率达到90%,氨氮去除率达到98%,且运行效果稳定。In order to treat glyphosate phosphorus wastewater to meet the discharge standard,a series of experiments were carried out to treat glyphosate phosphorus tailwater from the process of chemical oxidation and cyclic activated sludge(CASS),by combining anaerobic and aerobic biological treatment of immobilized microorganism and flocculation treatment of polyaluminum ferric chloride(PAFC).The effects of operation parameters in each stage of the combined process on the results were investigated,such as residence time,dosage and reaction temperature.The optimal operation parameters of anaerobic aerobic biological process and the optimal dosage of physicochemical process were determined.By continuous operation of 30 days under the conditions of anaerobic retention time of 2 h,aerobic retention time of 6 h and PAFC dosage of 20 mg/L,the results showed that the removal ratio of chemical oxygen demand(COD),total phosphorus and ammonia nitrogen were 95%,90%and 98%respectively,and the operation effect was stable.

关 键 词：草甘膦废水 厌氧 好氧 化学除磷 

分 类 号：X52[环境科学与工程—环境工程]