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首页> 外文期刊>Proceedings of the Institutuion Civil Engineers >Methods for improvement of clay slurry or sewage sludge
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Methods for improvement of clay slurry or sewage sludge

机译:改善泥浆或污水污泥的方法

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Clay slurry or sewage sludge may be used as fill materials for land reclamation. However, the treatment of very soft materials of high water content is difficult. One major difficulty is how to create a working platform on top of the slurry layer for required soil improvement works such as vacuum preloading to be carried out. Several methods that can be used to create a working platform on top of a slurry layer are reviewed in this paper. These include (1) sun drying; (2) capping with sand or other good soil; (3) use of geotextile; (4) cement mixing; and (5) dewatering using drainage. The advantages and disadvantages of each method are elaborated. Practical examples are given to illustrate the application of some of those methods. Sewage sludge is more difficult to treat because of its organic content and a combined chemical and mechanical method needs to be used. Two conceptual methods for using sewage sludge and other waste materials for land reclamation are also proposed.
机译:粘土浆或污水污泥可用作填土的填筑材料。但是,很难处理高含水量的非常柔软的材料。一个主要的困难是如何在泥浆层的顶部创建工作平台,以进行所需的土壤改良工作,例如进行真空预压。本文回顾了可用于在浆料层顶部创建工作平台的几种方法。其中包括(1)日晒; (2)用沙子或其他好的土壤盖好; (3)土工布的使用; (4)水泥搅拌; (5)利用排水进行脱水。阐述了每种方法的优缺点。给出了实际的例子来说明其中一些方法的应用。由于污泥的有机物含量较高,因此难以处理,因此需要使用化学和机械方法相结合的方法。还提出了两种利用污水污泥和其他废物进行土地复垦的概念方法。

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