Volatile　fatty　acids　carbon　source　for　biological　denitrification

作     者：Xu Yatong (Centre of International Research for Water and Environment, Lyonnaise des Eaux,France) 

作者机构：Ctr. Intl. Res. for Water/Environ. Lyonnaise des Eaux France Department of Environmental Science East China Normal University Shanghai 200062 3663 North Zhongshan Road China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：1996年第8卷第3期

页      面：257-268页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 08[工学] 09[农学] 0903[农学-农业资源与环境] 0713[理学-生态学] 

主　　题：biological denitrification suspended sludge volatile fatty acids (VFA) nitrate nitrite C/N ratio. 

摘      要：In the suspended sludge system, when pH and temperature were suitable and carbon source was not limited, the denitrification and C-uptake rate followed a zero-order reaction. Mixed VFA C-source had higher denitrification rate than single VFA C-source consisting of them. When VFA were used as carbon source, consumed carbon quantity for denitrification was closed to 1. 07 mg VFA-C/mg NO-N. About 20% of the applied C/N was used for assimilative purposes. As rising up influent C/N by increasing the C load ,the sludge yield YN increased. The part of carbon consumption increased and the effluent oxidized nitrogen decreased. At pH 7. 5, 25℃ and sludge yield 0.72 mg VSS/mg NO-N, the calculated influent VFA-C /NO critical value was 1. 43 for complete denitrification.