【摘要】 采用一体式悬浮生长型和附着生长型膜生物反应器(MBR)处理微污染水源水,主要考察了两种MBR对污染物的去除途径和膜过滤性能。结果表明,两种MBR对主要污染物高锰酸盐指数和NH4+-N均有良好的去处效果,去除率分别达到66%和94%以上。悬浮生长型MBR的去除效果稍强于附着MBR,因为前者的生物量要高于后者。两种MBR的生物去除和膜去除对去除效果都有重要贡献,而膜去除是获得良好的出水水质的保证。曝气量对两种MBR的污染物去除效果没有明显影响,一定范围内增大曝气量会提高生物去除的比例。悬浮生长型MBR的膜污染速率要比附着生长型快得多,但运行稳定后,两者的膜比通量大致相当。更多还原

【Abstract】 Treatment of micro-polluted source water using suspended growth type of MBR and attached growth type of MBR was investigated with removal pathways of pollutant and membrane filtration as focus. Results indicated that both MBRs were effective in removal of CODMn and NH4+-N with average removal efficiency over 66% and 94% respectively. Because biomass of MBR of suspended growth was more than that of attached growth, its removal performance was a little better than the later. Both biological and membrane removal played an important role in eliminating the pollutants, with membrane removal acted as safeguard for stable and excellent quality of the effluent. Aeration had little influence on removal characteristics of both MBRs and stronger aeration might enhance the biological removal to some extent. The membrane polluted rate of MBR of suspended growth was much faster than that of the attached one. However the specific membrane fluxes were almost the same when performance of both reactors was stable.更多还原