基于生物膜技术的城市污水脱氮技术研究  

Study on Denitrification Technology of Urban Sewage Based on Biofilm Technology

作　　者：董洁[1] Dong Jie(Henan Academy of Agricultural Sciences,Zhengzhou 450002,China)

机构地区：[1]河南省农科院,河南郑州450002

出　　处：《环境科学与管理》2018年第12期114-117,170,共5页Environmental Science and Management

摘　　要：采用人工模拟城市污水,设定曝气生物滤池的水力停留时间为25 min,水温为12℃～26℃,PH为6. 8～8. 2条件下,对3种填料曝气生物滤池的挂膜过程及其氨氮去除效果进行了实验分析,实验结果表明,进水总氨氮浓度保持在0. 08 mg/L-0. 11 mg/L时,出水总氨氮浓度保持在0. 058 mg/L～0. 10 mg/L,氨氮去除率可达到88%～96%;当氨氮负荷逐渐增大时,氨氧化细菌和亚硝酸氧化细菌数量逐渐增加,并到一定数值时保持稳定,氨氮去除效率较高且较为稳定;当水温保持在16℃～26℃之间时,氨氮去除率较高; PH值为6时,去除率为62%,p H值在7. 0～8. 2区间时,去除率最高可达到79%之间。该技术具有较好的城市污水脱氮和有机物去除能力。Taking artificially simulated urban sewage as the sample,treatment condition is set at hydraulic retention time of the biological aerated filter is 25 min,the water temperature is 12℃~26℃,and the pH is 6.8~8.2.The ammonia nitrogen removal effect was analyzed experimentally.The experimental results show that when the total ammonia nitrogen concentration in the influent is maintained at 0.08 mg/L^0.11 mg/L,the total ammonia nitrogen concentration in the effluent is maintained at 0.058 mg/L^0.10 mg/L,and the ammonia nitrogen removal rate can reach 88%~96%.When the ammonia nitrogen load increases gradually,the number of ammonia-oxidizing bacteria and nitrous acid-oxidizing bacteria gradually increases,and it remains stable at a certain value,and the ammonia nitrogen removal efficiency is relatively high and stable when the water temperature is maintained at 16℃.The ammonia nitrogen removal rate is higher between-26℃;the removal rate is 62%when the pH is 6,and the removal rate is up to 79%when the pH is between 7.0 and 8.2.The technology has good denitrification and organic matter removal capacity of urban sewage.

关 键 词：生物膜 城市污水 脱氨 曝气生物滤池 

分 类 号：X703.1[环境科学与工程—环境工程]