Full-scale study on dynamic state membrane bio-reactor with modified intermittent aeration

摘要

In order to evaluate the performance of a newly developed dynamic state membrane bio-reactor (MBR) with MIA,a full-scale plant with the capacity of 210 m3/d was operated for treating sewage.Due to the MIA,the effect of residual oxygen could be completely removed during the non-aeration period and recycle ratio could be reduced to 1 recycle-to-influent ratio.Even though the plant was operated in winter season,stable performance could be achieved (BOD,CODcr,SS,TN,TP and E.coli removal efficiency;98.2,95.2,99.8,72.7,71.4 and 99.9%,respectively).Therefore newly developed dynamic state MBR with the MIA can be one of the useful biological nutrient removal (BNR) processes for stable nutrient removal.