Influence of the Operation Parameters on Membrane Filtration
膜-生物反应器运行条件对膜过滤特性的影响

The increasing rate of suction pressure of membrane was used to evaluate the membrane filtration characteristics of membrane bioreactor process. Through a group of test by means of orthogonal table,influence of suction time,suction suspended time and aeration rate on membrane filtration was investigated.Shorter suction time,longer suction suspended time and larger aeration rate could alleviate membrane fouling,which influenced accumulation and back transportation of pollutants on and from membrane surface.The optimum operation parameters were 10 minutes of suction time,5 minutes of suction suspended time and aeration rate of 4m3/h under the condition of SRT=40d and MLSS=5g/L.Suction time was the key factor among these three factors,and suction suspended time had the least impact on membrane fouling.