A/O工艺沉淀池污泥上浮原因与对策  

Sludge Up-floating in Sedimentation Tank in A/O Process:Cause and Countermeasures

作　　者：吴红娟[1] 刘超[2] 左金库[1] 

机构地区：[1]石家庄铁道学院土木工程分院,河北石家庄050043 [2]石家庄市桥东污水处理厂,河北石家庄050026

出　　处：《环境科学与技术》2008年第6期132-134,共3页Environmental Science & Technology

摘　　要：针对高温季节城市污水处理厂沉淀池发生污泥上浮现象,从DO、电子供体、pH、水温、内回流比、SRT等因素进行分析,得出水温较高时,反应器内硝化反应充分,当内回流流量和剩余污泥排放量较少时沉淀池内反硝化反应加剧,生成大量N2引起污泥上浮。提出了增大内回流、增大剩余污泥排放量、减小曝气量等有效的解决措施。In view of the situation that sludge in sedimentation tank of municipal wastewater plant floatsup during high temperature season, factors including DO, electron donor, pH, water temperature, internal reflux ratio and SRT were studied. Results showed that when water temperature is high, the nitration in reactor is sufficient. Reducing the internal reflux flow and remaining sludge release will aggravate the denitrification in sedimentation tank, forming large quantity of N2 to cause sludge float-up. Countermeasures such as increasing internal reflux and remaining sludge release as well as reducing aeration were also proposed.

关 键 词：脱氮 硝化 反硝化 

分 类 号：X703[环境科学与工程—环境工程]