侧向流曝气生物滤池处理生活污水的试验研究  

Experimental Study on Lateral-flow Biological Aerated Filter for Domestic Wastewater Treatment

作　　者：张红晶[1] 龙腾锐[2] 何强[2] 曹艳晓[2] 

机构地区：[1]重庆大学化学化工学院,重庆400045 [2]重庆大学城市建设与环境工程学院,重庆400045

出　　处：《中国给水排水》2007年第7期82-85,共4页China Water & Wastewater

基　　金："十五"国家科技攻关课题(2004BA604A01);荷兰政府赠款项目(NGGP)

摘　　要：采用以沸石为填料的侧向流曝气生物滤池(LBAF)处理生活污水,考察了水力负荷和气水比对其除污效果的影响。结果表明,在气水比为10∶1、水力负荷为0.43 m3/(m2.h)的最佳工况下,LBAF对COD、SS、氨氮、总氮和总磷的去除率分别为88.01%、95.18%、78.97%、52.58%和21.02%;将滤池水位增高导致出水氨氮恶化的突变点作为运行终点,开始反冲洗;当在水力负荷为0.43 m3/(m2.h)下运行时,LBAF的反冲洗周期为5 d。A lateral-flow biological aerated filter （LBAF） with zeolite as media was used to treat domestic wastewater. The influence of hydraulic load and air/water ratio on the pollutant removal efficiency was investigated. The experimental results show that under the optimal conditions of 10 ： 1 air/water ratio and 0.43 m^3/（m^2·h） hydraulic load, the removal rates of COD, SS, NH3 -N, TN and TP are 88.01%, 95.18%, 78.97%, 52.58% and 21.02% respectively. When the rise of water level in the filter causes increased concentration of NH3 - N in the effluent, it indicates the end of the operation, and backwashing should begin. The backwashing period is 5 days when the hydraulic load is 0. 43 m^3/（m^2·h）.

关 键 词：侧向流曝气生物滤池 生活污水 水力负荷 气水比 反冲洗 

分 类 号：X703[环境科学与工程—环境工程]