Abstract:
To study thee factor affecting the efficiency of textile wastewater treatment by reverse osmosis process. Effects of pressure, concentration recirculation and recovery ratio were studied. Three sets experiments were performed by varied pressure, concentration recirculation and recirculation and recovery ratio. Pressure was varied from 250, 500, 750 and 1000 psi, concentration recirculation of 0, 25, 50 and 75% and recovery ratio of 5, 10, 15 and 20%, respectively. The result of this experiment showed that increasing of pressure, concentration recirculation and recovery ratio caused decreasing of efficiency, higher pressure used at 250, 500, 750 and 1000 psi had higher dissolved solids in permeate as 18, 24, 33 and 37 mg/l respectively, and higher chloride as 0, 3, 6 and 10 mg/l, when variation of concentration recirculation from 0 to 75% caused dissolved solids in permeate as 16, 20, 23 and 28 mg/l and 8, 9, 11 and 16 mg/l of chloride were found, and increasing of recovery ratio as 5, 10, 15 and 20% resulted in 15, 19, 24 and 29 mg/l of dissolved solids in permeate and 11, 13, 14 and 16 mg/l of chloride were found respectively. While 100% of colour removal was achieved in every experiments of the research.