文档介绍：处理低温低碳源污水的倒置A2/O工艺强化脱氮研究
张智1,陈杰云1,李勇2,尹晓静1,张华2,杨明佳2,孙畅2
(1 重庆大学三峡库区生态环境教育部重点实验室,重庆 400044, 2 重庆排水有限公司鸡冠石污水处理厂,重庆 400000)
摘要: 针对重庆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脱氮效果不稳定的问题进行了生产性试验研究。在采取了常高温条件下的缩短初沉池的水力停留时间、投加垃圾渗滤液等措施的基础上,低温时针对性采取了提高污泥浓度到5500~6000mg/L,,,对TN的去除率达到62%左右,与前两年低温脱氮效率相比提高了10%,实现了TN出水的稳定达标。同时通过优化对二沉池运行管理,确保刮泥机正常工作与出水SS的达标。
关键词: 倒置A2/O工艺; 低温; 低碳源; 高污泥浓度; 脱氮
Nitrogen Removal from Low carbon &low-temperature Wastewater
by Reversed A2/Oprocess
ZHANG Zhi1,CHEN Jie-yun1 , LI Yong2 ,YIN Xiao-jing1 ,ZHANG Hua2 ,YANG Ming-jia2,SUN Chang2
(1. Key Laboratory of Three Reservior Region’s Eco-Enviroment,Ministry of Education,Chongqing University, Chongqing 400045, China;2. Jiguanshi WWPT,Chongqing Drainage pany,Chongqing 400000, China)
Abstract: Full scale experimental study on nitrogen removal for low-carbon & low-temperature wastewater is conducted in reversed A2/O process in Jiguanshi WWTP in Chongqing. On the basis of shortening the hydraulic retention time and adding landfill leachate in normal and high-temperature condition, by taking measures in low-temperature condition that sludge concentration is increased to 5500 ~ 6000 -1,DO is controlled at about -1in the aeration tank, the effluent TN is stable at about 15 .-1, the TN removal efficiency reaches about 62%, which increases 10% compared with two years ago, the