Experimental study on dual-function ceramic membrane for wastewater treatment

Aiming at the membrane fouling of membrane bioreactor,an original bioreactor——dual-function ceramic membrane bioreactor has been developed.The primary characteristic is that the membrane can be operated alternatively as an aerator or as a filter,which combines the on-line backflushing with aerating.The removal rate of COD,NH3-N under different DO,HRT,temperatures was investigated.And oxygen transfer coefficients (KLa) of the ceramic membranes with different porous size has been compared with gritstone sparger under the same condition,which are respectively 0.2315min^-1,0.1587min^-1,0.0991min^-1.