Effect of nitrifying ability on denitrifying phosphorus removal efficiency in DNP-MSBR process

摘要：

The nitrifying ability and influence factors of the biofilm reactor in the DNP-MSBR process were investigated, the methods for improving the nitrate proportion and reducing the simultaneous nitrification and denitrification in the biofilm reactor were analyzed. The results demonstrate that keeping the ammonia nitrogen load below 120 g/(m3·d), chemical oxygen demand(COD) load below 500 g/(m3·d), dissolved oxygen(DO) concentration on the level of 5-6 mg/L in the nitrifying section, the average removal efficiency of ammonia nitrogen can be obtained more than 90％, besides the simultaneous nitrification and denitrification can be extremely reduced and the nitrate proportion will be guaranteed. In the DNP-MSBR process, the denitrifying phosphorus removal efficiency achieves 75％.

关键词： DNP-MSBR denitrifying phosphorus removal nitrate proportion

作者: HAN Wan-yu JI Fang-ying YANG Su-bo

作者单位: Key Laboratory of Three Gorges Reservoir Regions Eco-environment, Ministry of Education, Chongqing University, Chongqing 400045, China

会议类型: 国际会议

会议名称: 欧亚可持续城市发展国际研讨会( Proceedings of International Conference on Asia-European Sustainable Urban Development)

会议地点: 重庆

会议语种:英文

页码: 190-194

在线出版日期: 2006-04-04（万方平台首次上网日期，不代表论文的发表时间）