摘要
针对我国南方的污水处理厂进水碳源较低,导致反硝化效率不高的问题,在不外加碳源的条件下,通过调整内回流量、好氧末段溶解氧浓度、进水量,分析各变量对反硝化效率的影响。结果表明,低浓度碳源条件下,增大内回流量至150%,控制好氧末段出水溶解氧为1.0 mg/L,可有效的提高本工艺的反硝化效率,而由于进水量变化引致污泥负荷增大也可提高反硝化反应速率。
Due to the low C/N rate of water inflow in sewage treatment plants in South China,the denitrification efficiency is not high enough.In this study,we analyzed the factors influencing the denitrification efficiency by adjusting the internal reflux ratio,the DO concentration at the aerobic terminal,and the water inflow. The results showed that,under low-carbon conditions,the denitrification efficiency would increase significantly when the internal reflux ratio was 150 % and the DO concentration at the aerobic terminal was 1. 0 mg/L.In addition,the increase of sludge caused by the change of water inflow could also increase the denitrification efficiency.
作者
柯浪文
王田天
周娟
龙云川
周少奇
KE Langwen WANG Tiantian ZHOU Juan LONG Yunchuan ZHOU Shaoqi(Shijing Branch of Guangzhou Sewage Purification Co. Ltd. ,Guangzhou 510450,China School of Civil Engineer- ing and Transportation, South China University of Technology, Guangzhou 510006, China School of Environment and Energy,South China University of Technology, Guangzhou 510006, China Guizhou Academy of Sciences, Guiy- ang 550001, China)
出处
《贵州科学》
2017年第4期93-96,共4页
Guizhou Science
基金
国家重点研发计划项目(2016YFC0400702):西部喀斯特山区农村供水排水一体化技术研究及示范
关键词
AAO工艺
低碳源污水
反硝化效率
内回流比
AAO process
low-carbon sewage
denitrification efficiency
internal reflux ratio
