化学/生物联合工艺处理城市污水研究  

Study on municipal wastewater treatment by chemical and biological process

作　　者：侯红娟[1] 王洪洋[1] 李彤[1] 周琪[1] 

机构地区：[1]同济大学污染控制与资源化研究国家重点实验室,上海200092

出　　处：《工业水处理》2005年第4期43-46,共4页Industrial Water Treatment

基　　金：国家高技术研究发展计划(863计划):城市污水处理与资源化技术研究及工程示范项目;编号:2002AA601023

摘　　要：采用聚合硅酸铁混凝剂,直接投加到反应器中(即投加混凝剂活性污泥法),考察其对COD、氮、磷的去除效果,并与对生物反应器出水再进行混凝沉淀(即后混凝法)进行对比。结果表明:投加混凝剂活性污泥法,COD和TN的去除率略有提高,但两种工艺没有明显的区别;后混凝法对TP的去除率略高于投加混凝剂活性污泥法,但其出水中铁离子的含量远高于投加混凝剂活性污泥法,且需要增加一套混凝、沉淀设备,因此直接将混凝剂投加到生物反应器中比较适合于辅助除磷。As a kind of coagulant, polyferric silicate is used to compare the remo val effects on COD, nitrogen, and phosphorus in feeding coagulant into biologica l reactor directly(feeding coagulant activated sludge process) with that of feeding coagulant into the bioreactor effluent(post-coagulating pro cess). Results indicate that the removal efficiency of COD and TN increases a little but there is no distinct dif ference between the two kinds of processes. The removal efficiency for TP of pos t-coagulating process is a little higher than that of feeding coagulant activate d sludge process, while the concentration of Fe ion in the former process, which also needs a series of equipment for coagulating and settling, is far stronger than that in latter process. So it is suitable for accessorial phosphorus remova l to feed coagulant into the bioreactor.

关 键 词：聚合硅酸铁 除磷脱氮 化学除磷 生物除磷 

分 类 号：X703[环境科学与工程—环境工程]