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Characteristics of Heavy Metal Species Transformation of Pb, Cu, Zn from Municipal Sewage Sludge by Thermal Drying

文献类型： 外文期刊

作者： Li, Jinping 1 ; Gan, Jinhua 2 ; Hu, Yunjiao 1 ;

作者机构： 1.Wuhan Text Univ, Sch Environm Engn, Wuhan, Peoples R China

2.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Wuhan, Peoples R China

关键词： Municipal sewage sludge;Thermal drying;Heavy metal;Species transformation;Stabilization

期刊名称：SELECTED PROCEEDINGS OF THE TENTH INTERNATIONAL CONFERENCE ON WASTE MANAGEMENT AND TECHNOLOGY

ISSN： 1878-0296

年卷期： 2016 年 31 卷

页码：

收录情况： SCI

摘要： Thermal process allow for a significant reduction in the weight and volume of transformed sewage sludge. The high heavy metal content in sewage sludge effectively reduces the possibility of its agricultural use. This study investigated heavy metals transformation from municipal sewage sludge using a combination of thermal drying process. The experiments were conducted using furnace as a heating apparatus to dry the municipal sewage sludge at different temperature and analyze the species of heavy metal in municipal sewage sludge after drying. Results show that the contents of heavy metal are different in municipal sludge. The species of heavy metal obviously transformed after drying at different temperature. Additionally, the transform amount of metals varies in the species of metal as well as the type of heavy metal after drying. The effect of high temperature can transfer the acid-soluble, the reducible and the oxidizable species into the residual species. High temperature has the ability of stabilizing the heavy metals in municipal sewage sludge. (C) 2016 The Authors. Published by Elsevier B.V.

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