前置反硝化BAF工艺处理生活污水的脱氮试验研究  

Experimental Study on Nitrogen Removal of Domestic Sewage Using BAF with Pre-denitrification Process

作　　者：张欣[1] 吴浩汀[1] 谢凯娜[1] 

机构地区：[1]东南大学环境科学与工程系,南京210096

出　　处：《安全与环境工程》2008年第1期58-61,共4页Safety and Environmental Engineering

摘　　要：应用前置反硝化BAF工艺对生活污水进行试验研究,结果表明水力负荷对该工艺处理效果影响显著。在A段与O段体积比1∶2、气水比3∶1、回流比200%的条件下,最佳水力负荷为2.80 m3/(m2.h),此时COD去除率在90%左右,NH4+-N去除率大于85%,总脱氮率大于70%;出水COD小于30 mg/L,NH4+-N小于5mg/L,TN小于15 mg/L;同时发现回流比对系统TN去除效果影响较大。An experiment was carried out on domestic sewage using BAF with pre-denitrification process. The results show that influence of hydraulic loading on this system is significant. The optimum hydraulic loading is 2.80 m^3/（m^2 h） when the volume ratio of anoxia phase and aerobic phase is 1：2, the ratio of air to flow is 3：1, and the reflux ratio is 200%. The removal rate is 90% for COD, more than 85% for ammonia nitrogen, and more than 70 % for total nitrogen. The effluent concentration of COD, ammonia nitrogen and total nitrogen are less than 30 mg/L,5 mg/L and 15 mg/L. The influence of reflux ratio on the total nitrogen removal is important.

关 键 词：生活污水 曝气生物滤池 前置反硝化 水力负荷 回流比 

分 类 号：X703.1[环境科学与工程—环境工程]