摘要
采用“混凝-AF-BAF”组合工艺对洗浴废水进行处理,通过实验确定组合工艺最优参数:混凝阶段选择混凝剂为FeCl3,最佳投药量为100 mg/L;生物处理阶段选择厌氧生物滤池(AF)+曝气生物滤池(BAF)组合工艺,确定AF的停留时间为3 h,BAF的停留时间为10 h,并且BAF出水按照100%的回流比回流至AF池中。以此最优参数整体运行后,组合工艺出水COD、氨氮质量浓度可分别降至16、0.1 mg/L以下,LAS、TP、TN质量浓度可分别降至0.26、0.49、9.02 mg/L,均达到城镇污水处理厂污染物排放标准(GB 18918-2002)中的一级A标准。
The bathing wastewater was treated with the "Coagulation-AF-BAF" combination process and the optimum parameters of the combined process were determined through experiments as follow: the coagulation stage selects FeCl3 as coagulant, the optimal dosage was 100 mg/L, the biological treatment stage selects anaerobic biological filter (AF)+ aeration biological filter (BAF) combination process ,the residence time of AF is 3 h, the residence time of BAF is 10 h, and the BAF effluent returns to the AF pool at a reflux ratio of 100%. After running with this optimal parameter, the effluent COD and ammonia nitrogen of the combined process can be reduced to less than 16 mg/L and 0.1 mg/L;LAS, TP, and TN can be reduced to 0.26 mg/L, 0.49 mg/L and 9.02 mg/L, all meet the Class A standard in the "Emission Standard for Pollutants for Municipal Wastewater Treatment Plants"(GB 18918-2002).
作者
王希越
刘东方
王振东
龙宇涵
安晓静
薛诚
WANG Xiyue;LIU Dongfang;WANG Zhendong;LONG Yuhan;AN Xiaojing;XUE Cheng(College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China)
出处
《水处理技术》
CAS
CSCD
北大核心
2019年第9期115-119,共5页
Technology of Water Treatment
关键词
混凝
厌氧滤池
曝气生物滤池
洗浴废水
LAS
coagulation
anaerobic filter
biological aerated filter
bathing wastewater
LAS
