【摘要】 采用模拟膜生物反应器构建的滤袋式膜生物反应器处理二甲苯废气,并初步探讨了其净化性能。实验结果表明:在4~9℃的低温条件下,二甲苯的去除能力随着停留时间、进气负荷的增大而提高,最大去除能力可达到74.3 g/(m3·h),与一般生物滴滤塔的运行性能相当。微生物主要附着在滤袋表面,且生长良好。根据本实验中滤袋式膜生物反应器的结构特点,可进一步增加滤袋比表面积以提高其去除能力。更多还原

【Abstract】 The filter-bag membrane bioreactor which simulates the way of membrane bioreactor was designed and used to purify waste gases containing xylene,and its performance was preliminarily discussed. The experimental results showed that the elimination capacity of xylene increased when the empty bed residence time prolonged and the inlet loading increased under the low temperature of 4—9℃. The elimination capacity can reach 74. 3 g /( m3·h),which was as much as that for the bio-trickling filter. Most of the microorganisms wellgrew on the surface of the filter-bag. In order to enhance the elimination capacity,the specific surface area should be amplified based on the structure of the filter-bag membrane bioreactor.更多还原