The effects of repeated chemical cleaning of polyvinylidene flouid (PVDF) microfiltration (MF) and ultrafiltration (UF) membranes through the use of sodium hypochlonite is presented. The paper provides detailed data on the impacts to the chemical/physical characteristics of multiple membranes as a result of the cleaning at various doses and concent...

PVDF based UF/MF membranes are susceptible to fouling and are generally cleaned using a chlorine-based solution. Exposer to sodium hypochlorite removes a portion of the hydrophilic additives from the membrane and making the membrane surface relatively less hydrophilic and more prone to fouling....