shows tap water permeate flux at a TMP of 2.5 barand 5 bar for UF membranes: (1) virgin, (2) after the treatmentwith synthetic wastewater and (3) after the cleaning stage withwater at room temperature and atmospheric pressure for 1 h.A loss of the water permeate flux (above 80%) was determinedafter trials with the synthetic effluent. The subsequent incor-poration of a cleaning stage for membranes allowed a waterflux recovery of about 36–45% of the original value. Accordingto the results obtained, a better flux recovery was achieved forGR60PP membrane due to its morphological characteristics asdiscussed above.