处理低温低碳源污水的倒置A^2/O工艺强化脱氮研究  

Nitrogen Removal from Wastewater at Low Carbon and Low Temperature by Reversed A^2/O Process

作　　者：张智[1] 陈杰云[1] 李勇 尹晓静[1] 张华 杨明佳 孙畅 

机构地区：[1]重庆大学三峡库区生态环境教育部重点实验室,重庆400045 [2]重庆排水有限公司鸡冠石污水处理厂,重庆400063

出　　处：《中国给水排水》2010年第1期6-8,12,共4页China Water & Wastewater

基　　金：水体污染控制与治理科技重大专项(2009ZX07315-002-01)

摘　　要：针对重庆市鸡冠石污水处理厂的倒置A2/O工艺在低温条件下处理低碳源污水时脱氮效果不稳定的问题进行了生产性试验研究。在低温时有针对性地采取了提高污泥浓度到5 500～6 000 mg/L、控制曝气池的DO在1.2 mg/L左右等措施,使出水TN稳定在15.5 mg/L左右,对TN的去除率达到62%左右,与前两年的低温脱氮效率相比提高了8%,实现了出水TN的稳定达标排放。同时通过优化对二沉池的运行管理,确保了刮泥机的正常工作与出水SS的达标。A full scale experiment was conducted to study the unstable nitrogen removal efficiency from low-carbon and low-temperature wastewater by the reversed A2/O process in Chongqing Jiguanshi WWTP. At low temperature, the sludge concentration is increased to 5 500 - 6 000 nag/L, and DO in the aeration tank is controlled at about 1.2 mg/L. After these measures, the effluent TN is stable at about 15.5 mg/L, and the TN removal rate reaches about 62% , a 8% improvement from two years ago. The up-to-standard discharge of the effluent is achieved. At the same time, the operation of the secondary sedimentation tank is optimized to ensure that the mud scraper works normally and the effluent SS reaches the standard.

关 键 词：倒置A2/O工艺 低温 低碳源 高污泥浓度 脱氮 

分 类 号：X703[环境科学与工程—环境工程]