MBR工艺出水在粉土介质中的污染物转化规律研究  

Research on pollution transformation rule of MBR effluent in silt medium

作　　者：孙长虹[1] 刘桂中[1] 武江津[1] 王永刚[1] 

机构地区：[1]北京市环境保护科学研究院,北京100037

出　　处：《给水排水》2009年第S2期159-162,共4页Water & Wastewater Engineering

摘　　要：通过土柱试验模拟了MBR工艺出水在粉土介质中的下渗过程,并对下渗过程CODMn和三氮(NO-3—N,NO-2—N,NH3—N)的迁移转化规律进行了分析研究。试验结果表明:MBR出水中的CODMn在粉土介质中容易得到降解,而氮素虽然在粉土介质中存在硝化和反硝化反应,经拟合总氮反应符合一级反应动力学方程,但从总体上看总氮降解速率缓慢,试验条件下总氮的衰减系数为0.105 9 m-1。In this article the simulation study about infiltration process of MBR effluent in silt medium was made through laboratory soil-column experiment. Also the transformation rule of COD_(Mn) and nitrogen was researched. According to the experiment result, COD_(Mn) in MBR effluent was degraded easily. But for nitrogen, although nitrification and denification for nitrogen existed in silt medium and total nitrogen reaction process accorded with the first-order kinetics equation with decay constant of 0.105 9 m^(-1) on experiment condition, the degradation velocity of total nitrogen was relatively slow as a whole.

关 键 词：MBR 粉土 污染物 转化 

分 类 号：X50[环境科学与工程—环境工程]