微好氧时间对低碳源污水脱氮的影响  

Effect of Micro-Aerobic Time on Nitrogen Removal Efficiency in Low Carbon Source Sewage

作　　者：宋丹[1] 杨肃博 龚立[1] 安贝贝[1] 李灵[1] 刘姣姣[1] 

机构地区：[1]重庆市环境监测中心,重庆401147 [2]重庆忠庆环境工程咨询服务有限公司,重庆400016

出　　处：《三峡环境与生态》2013年第4期16-18,共3页Environment and Ecology in the Three Gorges

摘　　要：研究了微好氧时间对低碳源污水脱氮的影响。结果表明,微好氧时间对低碳源污水COD去除效果影响不大,但对系统硝化和反硝化效果有很大影响。当工况为厌氧2h/微好氧7h时,氨氮去除率为96.9%;出水亚硝态氮质量浓度没有积累现象,仅为0.116mg/L;总氮去除率最高,达到了47.3%。微好氧时间过长或过短都会降低系统的硝化效果和反硝化效果。The effect of micro-aerobic time on nitrogen removal efficiency in low carbon source sewage was evaluated.Results showed that micro-aerobic time had no obvious effect on COD removal efficiency , but had a significant effect on nitrification and denitrification efficiency of the system.Ammonium nitrogen removal rate was up to 96.9% under the condition of 2hanaerobic process and 7haerobic process ; The concentration of nitrite in effluent was only 0.116mg/L , and no nitrite accumulation was observed ; The removal rate （ 47.3% ） of the system to TN was the highest.Micro-aerobic time too long or too short would cause the nitrification and denitrification efficiency of the system dropped.

关 键 词：低溶解氧 同时硝化反硝化 低碳源污水 微好氧时间 

分 类 号：X703[环境科学与工程—环境工程]