COD/N对亚硝酸盐型同步硝化反硝化脱氮的影响  

The effects of COD/N on nitrogen removal by simultaneous nitrification and denitrification via nitrite

作　　者：范建华[1] 张朝升[1] 方茜[1] 张可方[1] 

机构地区：[1]广州大学土木工程学院

出　　处：《广州大学学报（自然科学版）》2007年第5期55-59,共5页Journal of Guangzhou University:Natural Science Edition

基　　金：国家自然科学基金(50578044);广东省科技攻关项目(2004B33301006);广州市科技计划项目(2004J1-C0051)

摘　　要：采用序批式活性污泥法，对人工配制的城市污水，通过控制泥龄成功实现亚硝酸盐型同步硝化反硝化，并考察了不同COD／N对亚硝酸盐型同步硝化反硝化效果的影响．试验结果显示：适宜的泥龄下，在控制适宜的pH、DO及COD：N为6．5左右的条件下，COD、氨氮和总氮的去除率分别可达90％-95％、99％左右、90％以上．因此，适宜的泥龄时，控制反应器内适宜的COD／N，可以使亚硝酸盐型同步硝化反硝化取得很好的效果．Nitrogen is removed from the synthetic wastewater by simultaneous nitrification and denitrification via nitrite by controlling sludge age in the sequencing batch reactor（SBR）. The effects of different COD： nitrogen ratios on nitrogen removal by simultaneous nitrification and denitrification via nitrite are investigated. The results of the experiment show that when the sludge age, pH and DO were optimal, the removal rate of COD, NH4^＋ -N and TN reached 90% -95%, 99% and 90% -95% respectively on condition that the COD： nitrogen ratio is 6.5. In conclusion, the results of simultaneous nitrification and denitrification via nitrite would be good by making the COD： nitrogen in sewage optimal when the sludge age is optimal in the reactor.

关 键 词：宁批式活性污泥法 泥龄 亚硝酸盐型同步硝化反硝化 

分 类 号：X52[环境科学与工程—环境工程]