Research on non-woven dynamic membrane bioreactor for domestic sewage treatment

Non-woven dynamic membrane bioreactor has been used to treat domestic sewage, and the treatment effect,membrane fouling and membrane resistance have been analyzed. The results show that non-woven dynamic membrane had effective removal efficiencies for COD and NH3-N, the average removal rates were 93% and 90%. The membrane flux and thansmembrane pressure had significant effect on membrane fouling. Increasing membrane flux or tansmembrane pressure would increase the deposition rate of sludge particles to membrane surface, and lead to membrane fouling and filtration resistance increased. The analysis of membrane resistance show that the cake layer resistance predominated and amounted to 98% of the total resistance.