EXPERIMENTAL STUDY OF REVERSE OSMOSIS MEMBRANE IN TREATMENT OF DYEING WASTEWATER

The performance of polyamide/polysulfone composite reverse osmosis membrane in treatment of dyeing wastewater was studied.The results showed that the actual dyeing wastewater of reactive blue MB-R could be effectively treated and concentrated through reverse osmosis process with polyamide/polysulfone composite membrane,the de-coloration rate of dyeing wastewater was near to 100%,the retention of inorganic salt was larger than 95%,and the permeate water was colorless.The process parameters such as cross-flow velocity,trans-membrane pressure and feed pH et al.had much effect on the performance of the reverse osmosis membrane,especially on the equilibrium permeate flux of the reverse osmosis membrane.