一体化多级生物膜反应器处理高氮小城镇污水脱氮试验研究  

Denitrification on integrated multistage biofilm reactor for high-nitrogen municipal wastewater treatment

作　　者：周健[1] 李志刚[1] 龙腾锐[1] 姜文超[1] 杨涛[1] 

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

出　　处：《环境科学学报》2007年第11期1804-1808,共5页Acta Scientiae Circumstantiae

基　　金：国家十五科技攻关项目(No.2003BA808A17-02-02)~~

摘　　要：采用新型一体化多级生物膜反应器处理高氮小城镇污水,在反应器中实现了高效的同步硝化反硝化脱氮,同时采用多点进水方式解决了脱氮低碳源问题.试验结果表明,在温度20℃,有机负荷(COD)为0.85kg·m-·3d-1、氮负荷为0.27kg·m-·3d-1、HRT为9h、分点进水条件下,可使进水COD为320mg·L-1,TN为97mg·L-1,NH4+-N为84mg·L-1左右的高氮城镇污水,出水COD、TN、NH4+-N分别为16mg·L-1、19.1mg·L-1、6.86mg·L-1,达到国家一级排放B标准.A new type of integrated multistage biofilm reactor was developed for municipal wastewater treatment in small cities and towns, in the experimental study, simultaneous nitrification and denitrification for nitrogen removal was accomplished with high efficiency. By multipoint feeding, the low carbon source problem was also solved. The experimental conditions were： temperature 20℃, organic loading 0.8.5 kg·m^-3·d^-1, and nitrogen loading 0.27kg·m^-3·d^-1 using a HRTof 9 h and multipoint feeding. When the COD, TN and NH4^＋ -N were 320 mg· L^ -1 , 97 mg· L^ -1 and 84 mg· L^ -1, respectively, the quality of the effluent was 16 mg· L^ -1 COD, 19.1 mg· L^ -1 TN and 6.86 mg· L^ -1NH4^＋ -N, which is compliant with national class I B effluent standards.

关 键 词：小城镇污水 脱氮 

分 类 号：X703.1[环境科学与工程—环境工程]