Experimental Study on Denitrification by the Co-processes of Bio-fluidized Bed and Activated Sludge Filtering Bed

摘要：

The experimental study on denitrificaiton of nitrogenous organic wastewater using the co-processes of bio-fluidized bed plus activated sludge filter bed which formed in gas-liquid-solid separating zone was carried out. Experimental results showed that: (1) Non-suppressed nitrification bacteria group by carbon sources was reproduced in the Bio-fluidized bed system, which in turn contributed to the NH4+-N removal efficiency of up to 93％-95％; (2) Dynamic and stable sludge filter was formed in the gas-liquid-solid separating zone by the setting of incline-tube and the controlling of precipitation mud condition, which leaded to the dramatically improving of TN removal rate; (3) 85％ BOD5 removal efficiency and 74％ TN removal efficiency was achieved under the operation conditions of HRT of 1.5h, aeration of 0.25 m3· h-1, BOD5 load of 9.2-10.4 m-3·d-1 and TN load of 0.65 kg·m-3·d-1.

关键词： nitrogenous organic wastewater bio-fluidized bed sludge filter bed biological denitrification

作者: WANG Heli JIANG Nan LIN Xueyu

作者单位: Institute of Environment and Resources, Jilin University, Changchun 130026, Jilin, China;School of W School of Water Resources and Environment, China University of Geosciences, Beijing 100083, China Institute of Environment and Resources, Jilin University, Changchun 130026, Jilin, China

会议类型: 国际会议

会议名称: 2007环境科学与技术国际会议(The 2007 International Symposium on Environmental Science and Technology)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-11-13（万方平台首次上网日期，不代表论文的发表时间）