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http://dx.doi.org/10.14481/jkges.2015.16.5.27

Influence of pH on Mn Concentration of Effluent from Sludge Thickener of Water Treatment Plant  

Kim, Younjung (Center for Instrumental Analysis, Andong National University)
Lee, Seungeun (Handong Industry Ltd.)
Baek, Seungcheol (Department of Civil Engineering, Andong National University)
Kim, Taeheui (Department of Advanced Materials Engineering, Andong National University)
Publication Information
Journal of the Korean GEO-environmental Society / v.16, no.5, 2015 , pp. 27-33 More about this Journal
Abstract
Manganese in sludge precipitated during water treatment might be soluble again in effluent from sludge thickener. If that happens, the manganese concentration of effluent from water treatment plant will exceed the limit for clean reservation. In this study the influence of pH on Mn concentration of effluent from sludge thickener of water treatment plant was investigated. When the pHs of sludge solutions increased with alkaline materials such as NaOH, KOH, CaO, $Ca(OH)_2$, $CaCO_3$, the Mn concentrations of sludge solutions decreased under the limit. The Mn concentration of effluent from sludge thickener could be controlled with waste limestones from beneficiation process at limestone mine as an alkaline material.
Keywords
Maganese concentration; pH; Water treatment plant; Sludge; Effluent; Waste limestone;
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Times Cited By KSCI : 3  (Citation Analysis)
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