Simultaneous nitrification and denitrification in step feeding biological nitrogen removal process

被引：31
|
作者：
Zhu, Gui-bing
Peng, Yong-zhen [1 ]
Wu, Shu-yun
Wang, Shu-ying
Xu, Shi-wei
机构：
[1] Harbin Inst Technol, Sch Municipal & Environm Engn, Harbin 150090, Peoples R China
[2] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China
[3] Beijing Univ Technol, Key Lab Beijing Water Qual Sci & Water Environm R, Beijing 100022, Peoples R China
[4] Beijing Drainage Grp Co Ltd, Beijing 100038, Peoples R China
来源：
JOURNAL OF ENVIRONMENTAL SCIENCES | 2007年 / 19卷 / 09期
基金：
中国国家自然科学基金;
关键词：
biological nitrogen removal; dissolved oxygen; floc size; simultaneous nitrification and denitrification; step feeding process;
D O I：
10.1016/S1001-0742(07)60170-3
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The simultaneous nitrification and denitrification in step-feeding biological nitrogen removal process were investigated under different influent substrate concentrations and aeration flow rates. Biological occurrence of simultaneous nitrification and denitrification was verified in the aspect of nitrogen mass balance and alkalinity. The experimental results also showed that there was a distinct linear relationship between simultaneous nitrification and denitrification and DO concentration under the conditions of low and high aeration flow rate. In each experimental run the floc sizes of activated sludge were also measured and the results showed that simultaneous nitrification and denitrification could occur with very small size of floc.
引用
收藏
页码：1043 / 1048
页数：6
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