Review of Recent Trends in Capillary Suction Time (CST) Dewaterability Testing Research
Review of Recent Trends in Capillary Suction Time (CST) Dewaterability Testing Research
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DOI：
10.1021/ie058011u
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发表时间：
2005-09
影响因子：
4.2
通讯作者：
M. Scholz
中科院分区：
文献类型：
--
作者：
M. Scholz
本文的目的是批判性地评估毛细抽吸时间（CST）脱水性测试研究的最新趋势。絮凝体结构在解释实际脱水问题，如滤纸堵塞的重要性进行了评估。综述了CST在污泥脱水性能研究中的应用现状。经验CST测试是公认的主要方法，用于确定污泥脱水性，尽管它的缺点，如有限的可能性建模，因此，predictphysical过程，如由滤纸结合的水量。然而，CST装置是便携式的，并且该方法易于进行、快速、成本有效且准确，如果固体浓度和平均过滤比阻的乘积是感兴趣的。使用改进的CST测试与矩形而不是圆形的污泥储存和分配设施，和具有较小孔径的滤纸，是最有前途的。
The aim of this review paper is to critically assess recent trends in capillary suction time (CST) dewaterability testing research. The importance of floc structure in explaining practical dewaterability problems such as filter paper clogging is assessed. Current literature on CST for sludge dewaterability is reviewed. The empirical CST test is well-established as the leading method for the determination of sludge dewaterability, despite its shortcomings, such as restricted possibilities to modeland, therefore, predictphysical processes, such as the amount of water bound by the filter paper. Nevertheless, the CST apparatus is portable, and the method is easy to conduct, quick, cost-effective, and accurate, if the product of solid concentration and average specific resistance to filtration is of interest. The use of modified CST tests with a rectangular instead of a circular sludge storage and distribution facility, and a filter paper with smaller pore diameter, were most promising.