In this study, a commonly used ferric chloride was utilised as coagulant for removing organic compounds from seawater. More than 57% of dissolved organic carbon (DOC) was removed at optimum dosage of 3 mg Fe+3/L. The coagulation by FeCl3 at optimum dosage could remove a majority (95%) of hydrophobic compounds. The results from Liquid Chromatography – Organic Carbon Detector showed that only <0.02 mg/L of hydrophobic compounds was found after coagulation. In addition, the modified fouling index decreased considerably from 15,848 s/L2 with raw seawater to 3,025 s/L2 with seawater after coagulation. In-line coagulation coupled with submerged membrane system (ICSMS) was also trialled. It is observed that critical flux was increased from 20 L/m2·h in the conventional submerged membrane system to 55 L/m2 h in ICSMS. The ICSMS could remain the high DOC removal efficiency (more than 70%) at filtration rate of 20 L/m2 h when keeping the development of trans-membrane pressure was significant lower than that of conventional submerged membrane system.
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Research Article|
July 01 2011
Submerged membrane coagulation hybrid system as pretreatment to organic matter removal from seawater Available to Purchase
Sanghyun Jeong;
Sanghyun Jeong
1Faculty of Engineering and IT, University of Technology, Sydney (UTS), PO Box 123, Broadway, NSW 2007 Australia
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Tien Vinh Nguyen;
Tien Vinh Nguyen
1Faculty of Engineering and IT, University of Technology, Sydney (UTS), PO Box 123, Broadway, NSW 2007 Australia
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Saravanamuthu Vigneswaran
1Faculty of Engineering and IT, University of Technology, Sydney (UTS), PO Box 123, Broadway, NSW 2007 Australia
E-mail: [email protected]
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Water Supply (2011) 11 (3): 352–357.
Article history
Received:
February 01 2011
Accepted:
March 30 2011
Citation
Sanghyun Jeong, Tien Vinh Nguyen, Saravanamuthu Vigneswaran; Submerged membrane coagulation hybrid system as pretreatment to organic matter removal from seawater. Water Supply 1 July 2011; 11 (3): 352–357. doi: https://doi.org/10.2166/ws.2011.036
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