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Effect of Experimental Factors on Manganese Removal in Manganese Sand Filtration  

Kim, Berm-Soo (한국수자원공사 수자원연구원 상하수도연구소)
Yoon, Jaekyung (한국수자원공사 수자원연구원 상하수도연구소)
Ann, Hyo-Won (한국수자원공사 수자원연구원 상하수도연구소)
Kim, Chung-Hwan (한국수자원공사 수자원연구원 상하수도연구소)
Publication Information
Journal of Korean Society of Water and Wastewater / v.20, no.1, 2006 , pp. 86-93 More about this Journal
Abstract
In the drinking water treatment, the aesthetic and color problem are caused by the manganese which is occurring and present in the surface, lake and ground water. The most common treatment processes for removing manganese are known for oxidation followed by filtration. In this study, the manganese sand process was used for removing manganese with river bank filtrate as a source. In the manganese sand process, the residual chlorine and pH are important factors on the continuous manganese oxidation. In addition, space velocity (SV) and alum dosage are play a role of manganese removal. Even though manganese removal increased with increasing chlorine concentration, the control of residual chlorine is actually difficult in this process As the results of tests, the residual chlorine concentration as well as manganese removal were effectively achieved at pH 7.5. The optimum attached manganese concentration on manganese sand was confirmed to 0.3mg/L by the experimental result of a typical sand converting to manganese sand.
Keywords
manganese sand; residual chlorine; pH control; manganese removal efficiency; attached manganese concentration;
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