MBR处理微污染水的研究

本文对膜生物反应器(MBR)深度处理生活污水的工艺特性进行了研究,其结果表明:膜生物反应器对微污染水中化学需氧量(CODC)r,氨氮(NH3-N),具有较高的去除率,出水CODCr为30～45mg/L,去除率高达85%,NH3-N为0.3～1.8mg/L,去除率高达97%,满足中水回用的要求;TP为0.2～2mg/L,去除率为34%。不同水力停留时间下去除效果的比较表明:MBR处理微污染水时的最佳水力停留时间为8h。

The effect of the advanced treatment of micro-polluted water by usingmem brane bioreactor was investigated.Long-termoperation had showed that themembran ebioreactor(MBR)hadagood effecton the removal of chemical oxygen demand(CODcr),ammoniani trogen(NH3-N).The qualityof the effluent had very stable.The CODcr of the effluent was 30～45mg/L,the removal rate can reach 85%;and the NH3-N of the effluent was 0.3～1.8mg/L,the remov al rate can reach 97%;the TP of the effluent was 0.2～2mg/L,there moval rate was only 34%.The comparation of the removal effectin different HRT showed that the best HRT for the MBR to treat micro-polluted water was 8h.