曝气生物滤池去除污水处理厂尾水中磷的效果研究  

A study on phosphorus removal effect of BAF in treating effluents from sewage plants

作　　者：顾梦雅[1] 张维佳[1] 张旭[2] 

机构地区：[1]苏州科技学院环境科学与工程学院,江苏苏州215011 [2]清华大学环境学院,北京100084

出　　处：《苏州科技学院学报（工程技术版）》2012年第2期5-8,共4页Journal of Suzhou University of Science and Technology （Engineering and Technology）

基　　金：国家水体污染控制与治理科技重大专项项目(2008ZX07313-002)

摘　　要：主要考察上向流BAF处理污水厂二级出水时对磷的去除效果,分析了气水比、滤层高度对BAF除磷效果的影响。结果表明：出水中溶解性磷的浓度总是高于进水中溶解性磷的浓度,并且气水比越小,这种现象越明显;在气水比2∶1时,总磷去除效果最佳,但平均去除率仅有38%;滤层高140 cm处取得水样中总磷的浓度最低,低于总出水中总磷的浓度;溶解性磷的浓度随着滤料层高度的增加逐渐增加;颗粒磷的去除主要集中在0~140 cm段。In this paper, dephosphorization of an up-flow BAF in the treatment of the secondary effluents from the sewage plant and the BAF dephosphorization effect by the air/water ratio and the height of filter layers have been analyzed. The results show that there is always more dissolved phosphorus in outflow than in inflow, which becomes more and obvious when the air/water ratio is lower. The BAF performs best to remove total phosphorus when the air/water ratio is 2：1, but the average removal rate is only 38%. The concentration of the total phosphorus in the sample taken from the height of 140 em is lowest, even lower than the sample taken from outflow. The concentration of the dissolved phosphorus increases with the height of filter layers; and the particulate phosphorus is mainly removed in 0-140 cm.

关 键 词：气水比 滤层高度 除磷 BAF 

分 类 号：TU992.3[建筑科学—市政工程]