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Membrane Water Treatment   Volume 1, Number 4, October 2010, pages 273-282
COD removal from industrial wastewater plants using reverse osmosis membrane
S.S. Madaeni and S. Samieirad

Abstract     [Buy Article]
    Treatment and reuse of industrial wastewater is becoming a major goal due to water scarcity. This may be carried out using membrane separation technology in general and reverse osmosis (RO) in particular. In the current study, polyamide (FT-30) membrane was employed for treatment of wastewater obtained from Faraman industrial zone based in Kermanshah (Iran). The effects of operating conditions such as transmembrane pressure, cross flow velocity, temperature and time on water flux and rejection of impurities including COD by the membrane were elucidated. The aim was an improvement in membrane performance. The results indicate that most of the chemical substances are removed from the wastewater. In particular COD removal was increased from 64 to around 100% as temperature increased from 15 to 45oC. The complete COD removal was obtained at transmembrane pressure of 20 bars and cross flow velocity of 1.5 m/s. The treated wastewater may be reused for various applications including makeup water for cooling towers.
Key Words
    membrane; reverse osmosis; COD; wastewater; industrial water.
Membrane Research Center, Department of Chemical Engineering, Razi University, Kermanshah, Iran

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