Optimisation of MF membrane cleaning protocol in an Indirect Potable Reuse (IPR) scheme

► Optimisation of chemical cleaning protocol demonstrated for membrane pilot plant. ► Bench-scale results replicated at pilot scale for real municipal wastewater. ► Box Behnken design used with novel cleaning efficacy determination method. ► Hypochlorite at pH 10 able to provide 100% membrane permeability recovery. ► Operating envelope for chemical cleaning conditions established for full flux recovery.