Abstract
Long-term pilot scale membrane filtration experiments were conducted to evaluate the effects of combined application of adsorption by supper-powdered activated carbon (S-PAC) and chemical enhanced backwashing (CEB) on the removal of odors and trihalomethane forming potentials (THMFPs) in membrane filtration for treatment of raw water containing higher concentrations of algae. The obtained results demonstrated clearly the combined application of CEB could effectively inhibit membrane fouling and, at the same time, could alleviate the risk from byproducts formed when pre-chlorination was applied as a pretreatment process for controlling membrane fouling. The results also demonstrated clearly that, with the combined application of adsorption by S-PAC, the removals for THMFPs, 2-MIB and geosmin could be greatly enhanced; and membrane fouling could also be controlled.
