OGO工艺同步硝化-反硝化生物脱氮特性  

NITROGEN REMOVAL CHARACTERISTICS OF SIMULTANEOUS NITRIFICATION AND DENITRIFICATION BY OGO PROCESS

作　　者：许晓毅[1] 罗固源[1] 吴淑媛[1] 汤丽娟[1] 

机构地区：[1]重庆大学三峡库区生态环境教育部重点试验室,重庆400045

出　　处：《水处理技术》2007年第4期18-20,24,共4页Technology of Water Treatment

基　　金：国家自然科学基金(50378095)

摘　　要：OGO工艺是一种在OCO基础上改进形成的新型环流循环污水处理技术,具有良好、稳定的生物脱氮效果。OGO系统在处理中浓度生活污水时,出水TN、NH3-N浓度分别为7.03～12.88mg/L和4.32～9.01mg/L,系统对TN和NH3-N的平均去除率分别达到74.04%和81.14%,环区内TN的去除约占整个系统生物脱氮的57%。环区各检测点硝态氮浓度均小于3mg/L,且无明显差异,同步硝化反硝化作用为OGO系统生物脱氮的主要途径之一,而主反应器内显著的DO浓度梯度,部分活性污泥絮体的团块化,以及系统中存在部分具有反硝化能力的好氧菌属,是系统发生同时硝化反硝化实现生物脱氮的重要原因。As a renovation reactor developed from OCO process, OGO technology had good and stable removal effect for nitrogen and phosphorus. For domestic wastewater treatment with mid-concentration, the concentration of TN and NH3-N in effluent were 7.03 ～ 12.88mg/L and 4.32 ～9.01 mg/L respectively. Removal efflciencies of TN and NH3-N, in OGO reached to 74.04% and 81.14%. TN removal amount in loop area was 80.89% of total nitrogen removal amount in the whole system. The concentration of NO3^--N in loop area for each sampling points was all lower than 3mg/L, and there were no distinct difference among them. Simultaneous nitrification and denitrification （SND） is one of the primary ways of nitrogen removal. Research results showed that obvious DO concentration gradient, conglomeration of some sludge and existence of aerobic bacteria with denitrifying ability were the important causes of simultaneous nitrification and denitrification happening in OGO process.

关 键 词：OGO 同时硝化反硝化 DO浓度梯度 好氧反硝化菌属 

分 类 号：X703.1[环境科学与工程—环境工程]