【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。更多还原

【Abstract】 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 CODMn and nitrogen was researched.According to the experiment result,CODMn 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.更多还原