... filtering filter for water treatment with different membrane material (PES,PS,PVDF,PVC,PAN,PP)Hollow fiber ultrafiltration membrane is one of the most natured ... Flushing Cycle6-180daysChemicals Flushing Time15-120minsChemicalsCitric acid,NaOH / NaClO,H2O2 UF membrane filter mineral water treatment plant