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Investigation on the Systematic Distribution of Sewerage Treatment and the Outputs of Municipal Sludge with Analysis on Properties for Hefei
Author(s): 
Pages: 29-32
Year: Issue:  4
Journal: Environmental Science and Management

Keyword:  城市污泥热值挥发分固定碳;
Abstract: 合肥为安徽省省会城市,市域城镇人口270万,污水处理分为八大系统,成为产生大量的城市污水污泥的来源,目前其产量达500 吨/天;其中既含有大量N、P等丰富的养分资源,并含有主要有Cu、Pb、Zn、Ni、Cr、Hg、Cd等重金属、大量难降解的有机污染物、20%~30%的无机物和病原物、寄生虫卵等有害物质,处理后的污泥,含水率约80%左右,平均总菌数为4.55×10<'8>个/ml,pH值为6.31,干污泥的热值平均为10 350.54 J/g,约合2 476.21 kcal/kg,此外对挥发分、灰分和固定碳含量等指标也进行了测试.对污泥的无害化、减量化处理及资源化利用提出了多元综合处理的方式与途径.
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