Ultrafiltration of desizing wastewater containing PVA in bench scale test

摘要

Ultrafiltration (UF) of desizing wastewater containing PVA (MW=10 000-70 000), which is a synthetic and non- biodegradable sizing agent, was investigated to develop the technology for size recovery from textile effluents. Using bench- scale UF system with polysulfone hollow fiber membranes (MWCO=10 000 and 30 000), membrane performance, i.e. permeate flux and rejection rate, was examined with the variation of operating parameters such as PVA concentration, transmembrane pressure, temperature, pH, cross-flow velocity, and prefilter sizes.