CAJ | 학술논문

主要针对贫营养条件下膜生物反应器( membrane bioreactor,MBR)污泥减量化进行研究,在封闭条件下对MBR污泥进行为期16 d的监测。实验期间主要针对污泥浓度及污泥活性进行了定期取样分析,采用修正的污染指数( modified fouling index,MFI)对污泥混合液可滤性进行评价。实验结果表明,长时间的内源呼吸过程将加速降低污泥活性及强化污泥混合液可滤性的恶化；短时间内源呼吸过程将改善污泥混合液可滤性,有利于MBR工艺实现污泥减量化。
주요침대빈영양조건하막생물반응기( membrane bioreactor,MBR)오니감양화진행연구,재봉폐조건하대MBR오니진행위기16 d적감측。실험기간주요침대오니농도급오니활성진행료정기취양분석,채용수정적오염지수( modified fouling index,MFI)대오니혼합액가려성진행평개。실험결과표명,장시간적내원호흡과정장가속강저오니활성급강화오니혼합액가려성적악화；단시간내원호흡과정장개선오니혼합액가려성,유리우MBR공예실현오니감양화。
The aim of this study was to investigate the excess activated sludge reduction under low nutrition in membrane bioreactor( MBR) . During a 16-day period,the experiment was investigated without nutrient addition to the close system. Mixed liquor suspended sludge( MLSS) and microbiological activity were periodically mo-nitored. The modified fouling index ( MFI) was used to investigate the filterability of mixed sludge closely relat-ed with the low nutrition. The results showed that the long time endogenous metabolism process had a negative influence on microbiological activity and the filterability of mixed sludge in MBR. It was also found that the short-time endogenous metabolism would benefit the excess activated sludge reduction.