摘要
实验对生物浮动床（MBBR）和活性污泥法两种工艺进行了比较。当水力停留时间为8h时，MBBR中的COD去除率和NH3-N去除率比活性污泥法分别增加了14．83％和25．66％；在MBBR中，气由水底上升，从填料空隙中穿过，由于填料的切割作用使大气泡被切割成无数的小气泡或微小气泡，加大了气液的接触面积，从而提高了氧的利用效率。综合比较两种工艺，MBBR由于能够附着大量微生物使得废水中活性污泥浓度达到6g／L，远远大于活性污泥工艺（1—3．0g,／L），因而在抗负荷冲击等方面优于活性污泥法。
This experiment compared moving bed biofilm reactor with active sludge process. When HRT is 8h, COD removing rate and NH3 - N removing rate of MBBR are respectively 14.83% and 25.66% more than that produced by ASP; The gas rises from the water bottom, passes through from the filling in the gap, large air bubbles are divided into small or micro ones due to the incision of carrier materials in the MBBR with the result of augmentation of interracial surface area between air and liquid, thus to improve the utilization efficiency of the oxygen. As a whole, because of great number of biomass grown on carrier materials, whose concentration amounts to 6g/L in the MBBR, far more than that of ASP（ 1 - 3.0 g/L）. It has stronger capacities regarding the impact of organic loading compared with ASP.
出处
《环境科学与管理》
CAS
2007年第12期127-130,157,共5页
Environmental Science and Management
