固体缓释碳源强化污水土地处理系统的反硝化效能  

Improving Denitrification Efficiency of Wastewater Land Treatment System with Solid Sustained-release Carbon Source

作　　者：谢希[1] 何圣兵[1] 崔洪升[2] 王虹[1] 刘佃娜[1] 陈雪初[1] 

机构地区：[1]上海交通大学环境科学与工程学院,上海200240 [2]中国市政工程华北设计研究总院,天津300074

出　　处：《中国给水排水》2014年第3期84-86,共3页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2009ZX07106-2-2);教育部新世纪优秀人才支持计划项目(NCET-11-0320)

摘　　要：针对传统的污水土地处理系统脱氮效果较差的问题,利用丝瓜络作为固体缓释碳源构建反硝化反应器,与土地处理系统联用,强化其反硝化效能。结果表明,在土地处理系统之后串联反硝化反应器,可使总氮的平均去除率从26.83%提高到80.77%,出水硝酸盐氮的平均浓度也从34.2 mg/L降到了7.32 mg/L;出水COD浓度有小幅度升高,但整个系统对COD的平均去除率仍可保持在91.22%的较高水平。由此证明,利用丝瓜络作为固体缓释碳源来提高污水土地处理系统的反硝化脱氮效能是可行的。In view of poor nitrogen removal efficiency of wastewater land treatment systems, loofah sponge was used as solid sustained-release carbon source to form a denitrification reactor in order to im- prove the denitrification efficiency of wastewater land treatment system. The results showed that after the wastewater was treated by the wastewater land treatment system followed by the denitrification reactor, the TN removal rate increased from 26.83% to 80.77%, and the effluent nitrate concentration decreased from 34.2 mg/L to 7.32 mg/L. The effluent COD concentration increased little, but the average COD re- moval rate in the whole system was 91.22%. It is feasible that loofah sponge was used as solid sustained- release carbon source for improving denitrification efficiency of wastewater land treatment system.

关 键 词：污水土地处理系统 丝瓜络 缓释碳源 反硝化 

分 类 号：X703[环境科学与工程—环境工程]