AAO工艺运行过程中浮泥过多原因分析与改进  

Analysis and Improvement of Excessive Floating Mud during AAO Process Operation

作　　者：唐智涛 何翔 潘志 Tang Zhitao;He Xiang;Pan Zhi(Hunan CRRC Environmental Engineering Co.,Ltd.,Changsha,410000)

机构地区：[1]湖南中车环境工程有限公司,长沙410000

出　　处：《建设科技》2024年第1期92-95,共4页Construction Science and Technology

摘　　要：农村生活污水特点是COD浓度低、氨氮浓度高,碳氮比失衡。碳源和溶解氧是反硝化反应的关键因素,碳源不足和溶解氧控制不好,会导致缺氧池反硝化反应不完全,硝化液直接进入沉淀池,如果沉淀池排泥效果差,污泥不及时,容易发生反硝化反应,导致浮泥过多。所以需要从改善排泥和提高反硝化效果两方面去解决浮泥过多的问题。The characteristics of rural domestic sewage are low COD concentration,high ammonia-nitrogen concentration,carbon-nitrogen ratio imbalance.Carbon and dissolved oxygen are the key factors in the denitrification.Insufficient carbon and poorly controlled dissolved oxygen will lead to incomplete denitrification in the anoxic tank,and nitrification solution will enter the sedimentation tank directly.If the sludge discharge efficiency of the sedimentation tank is poor and the sludge is not in time,denitrification reactions are prone to occur,resulting in excessive floating mud.Therefore,it is necessary to solve the problem of excessive floating sludge from two aspects:improving sludge discharge and enhancing denitrification efficiency.

关 键 词：AAO工艺 浮泥 反硝化反应 缺氧 污泥回流 

分 类 号：X703[环境科学与工程—环境工程]