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http://dx.doi.org/10.4491/KSEE.2011.33.9.677

Effects of Antiscalant on Inorganic Fouling in Seawater Reverse Osmosis Membrane Processes  

Kang, Nam-Wook (Department of Environmental Engineering, Konkuk University)
Lee, Seock-Heon (Water Environmental Center, KIST)
Kweon, Ji-Hyang (Department of Environmental Engineering, Konkuk University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.33, no.9, 2011 , pp. 677-685 More about this Journal
Abstract
The reverse osmosis membrane processes have several operational problems. Fouling by inorganic scale occurs on membrane surface due to increases in concentrations over solubility by retaining ions on feed side of the membrane. Inorganic scales could be controlled by antiscalants or acid addition. In this study, three antiscalants having different characteristics were selected and evaluated on efficiency of $CaCO_3$ scale control. The $CaCO_3$ scale was inhibited by the antiscalants : 0.4 mg/L for SHMP, 0.6 mg/L for Spectra Guard, and 3 mg/L for Flocon 150 N. Increasing concentration factors of simulated sea water resulted in increases in antiscalant doses for the scale control. The increases in doses were positively proportional to the concentrate factors used in this study. Spectra Guard, one of the polyacrylate type antiscalants, was the most effective to control $CaCO_3$ scale. The antiscalants with the different scale inhibition time and doses implied the different control mechanisms.
Keywords
Seawater Reverse Osmosis (SWRO) Desalination; Inorganic Scale; $CaCO_3$ Scale; Antiscalant; Inhibition;
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Times Cited By KSCI : 1  (Citation Analysis)
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