提高MBR工艺反硝化碳源利用率的研究  

Improvement of Carbon Source Utilization Rate for Denitrification in MBR Process

作　　者：薛涛[1] 车淑娟 张朋川[1] 袁璐璐[1] 俞开昌[1] 

机构地区：[1]北京碧水源科技股份有限公司,北京102206

出　　处：《中国给水排水》2017年第7期97-99,104,共4页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2014ZX07216-001)

摘　　要：为挖掘膜生物反应器(MBR)工艺的脱氮潜力,在MBR实际应用工程中开展了近1年的试验。在进水COD/TN值=4.0时,将污泥龄(SRT)从28~35 d延长至70~80 d,总氮去除率从61%提高至80%,出水总氮浓度从13 mg/L左右下降至6~8 mg/L,化学除磷费用仅增加了约0.02元/m^3,剩余污泥明显减量。MBR工艺释放了SRT作为工艺参数的调节自由度,拓展了生化系统的运行工况范围,在提高反硝化碳源利用率、强化污水脱氮效果方面具有独特优势。To further exploit the potential of nitrogen removal ability of MBR process, a full-scale experiment was conducted in a municipal wastewater treatment plant for nearly one year. On the condition of COD/TN = 4.0, as sludge retention time （SRT） was extended from 28 - 35 d to 70 - 80 d, the TN removal rate increased from 61% to 80% and the TN concentration in effluent decreased from around 13 mg/L to 6 - 8 mg/L. The cost of chemical phosphorus removal increased only 0.02 yuan/m3, and the excess sludge production decreased significantly. MBR process fully releases SRT as an adjustable parameter, expands the operational status of the biochemical system, and thus has special advantage on raising carbon source utilization rate for denitrification and enhancing nitrogen removal effect.

关 键 词：膜生物反应器 脱氮 碳源 污泥龄 

分 类 号：X703[环境科学与工程—环境工程]