PULPAND PAPER WASTEWATER RTEATMENT VIA OPTIMIZED POLYVINYLALCHOLE (PVA)/POLYETHERSLFUNE (PES)COMPOSITE NANOFILTRATION MEMBRANES

the pulp and paper industry is one of the contributors of watewater pollution. The ultimate aim of this paper is to reduce the COD amount of pulp and paper industry wastewaters by nanofiltration PES/PVA membranes which were synthesized and cross -linked with maleic acid MA. PVA/PES composite nanofiltration membranes were prepared by dipping of the support PES membrane in the polyvinyl alcohol PVA and cross - linking solutions. maleic acid MA was used as cross -linking agent. the concentrations of PVA and MA were 0.5-2 and 0.05-1 wt% respectively. the SEM images indicated that the PVA layer was formed on the PES support membrane.