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Evaluation of Design Parameter on Residuals Treatment Facilities in Membrane Water Treatment Plants  

Moon, Yong-Taik (한국수자원공사 수자원연구원)
Seo, In-Seok (한국수자원공사 수자원연구원)
Kim, Hong-Suck (한국수자원공사 수자원연구원)
Park, No-Suk (한국수자원공사 수자원연구원)
Ahn, Hyo-Won (한국수자원공사 수자원연구원)
Publication Information
Journal of Korean Society of Water and Wastewater / v.20, no.1, 2006 , pp. 138-146 More about this Journal
Abstract
The characteristics of backwash and concentrate discharges depend upon the quality of the water being treated and the net recovery of the membrane system. This paper is to indicate a design methods on the capacities of residuals treatment facilities in membrane processes for drinking water. We operated a demonstration membrane plant with a recovery rate of 90% for designing G-water treatment plant. We investigated on design parameter (optimum coagulant dosage and surface loading rate etc.) to design efficiently the residuals treatment facilities. The settling test was conducted with 1m columns dosing PACl to kaolin and membrane residuals under the experimental condition that discharge permit was under a 60mg/L. When the quantity of membrane residuals was $1,575m^3/day$, the estimated results for 1st thickener demonstrated the surface loading rate of 14.4m/day, detention time of 5.83hr, available depth of 3.5m.
Keywords
Residuals; Raw Water Quality; Recoveries; solids concentration; design methods; surface roading rate;
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