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Municipal sludge as landfill barrier material

机译:市政污泥作为填埋屏障材料

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The aim of this research is to find substitute barrier materials for natural clay from two kinds of municipal sludge: waterworks sludge(S_w) and dredging sludge( S_d). Laboratory tests were performed firstly to determine their Atterberg limits and hydraulic conductivity. Based on the results, the use of waterworks sludge was recommended. Then, shear strength tests were performed and it was found the shear resistance property of waterworks sludge is strong enough to maintain slope stability. In order to evaluate the possibility of secondary pollution, the heavy metal contents of waterworks sludge was determined and the results indicated that secondary pollution is unlikely happened. Finally, economic analysis proves that reusing waterworks sludge as barrier will reduce the lost a great for both landfill and waterworks. Based on the results, waterworks sludge was proposed to use and a further long-term simulated landfill test was suggested.
机译:这项研究的目的是从两种城市污泥中寻找替代天然粘土的阻隔材料:自来水厂污泥(S_w)和疏ed污泥(S_d)。首先进行实验室测试以确定其阿特伯格极限值和水力传导率。根据结果​​,建议使用自来水厂污泥。然后,进行了剪切强度测试,发现自来水厂污泥的剪切强度足以保持边坡稳定性。为了评价二次污染的可能性,对自来水厂污泥中的重金属含量进行了测定,结果表明不太可能发生二次污染。最后,经济分析证明,将水厂污泥作为屏障再利用将减少填埋场和水厂的损失。根据结果​​,建议使用自来水厂污泥,并建议进行进一步的长期模拟垃圾掩埋测试。

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