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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received May 19, 2012
Accepted August 22, 2012

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Influence of particle distribution on filter coefficient in the initial stage of filtration

Xing Min^† Longcang Shu Wei Li¹ Emmanuel Kwame Appiah-Adjei

State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China ¹Department of Hydrology and Water Resources, Nanjing Hydraulic Research Institute, Nanjing 210029, China

Korean Journal of Chemical Engineering, February 2013, 30(2), 456-464(9), 10.1007/s11814-012-0141-x

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Abstract

Under the condition that the size of suspended particles is nonhomogeneous, we studied how filter grain and suspended particles affect filter coefficient in the early stage. A stochastic method was used to study the variation of the initial filter coefficient. Through physical experiment, the collected data include the initial inflow and outflow concentration, the size distributions of particles in suspension and so on. By introducing the standard capture probability function P(d) and the characteristic length of filter bed Lc, this separated the grains’ and particles’ influence on filter coefficient. An example showed that we could use P(d), Lc to ascertain the result of effluent distribution, ratio of Cout to Cin in any depths and equivalent filter coefficient λm. We also studied the filter coefficient λl during the experiment and the first-order derivative of λl.

Keywords

Variation of Filter Coefficient Particle Size Distribution The Characteristic Length of Filter Bed

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