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Mathematical modeling of particle size distribution in secondary effluent filtration

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Analysis of various types of secondary effluents revealed a broad range of particle sizes, suggesting that particle size distribution (PSD) should be taken into consideration in deep-bed filtration calculations rather than concentrating exclusively on process parameters. A PSD function is shown to be a more effective and reliable index than the conventional “mean” particle diameter. The power law function was found to express effluent PSD well; experimental data confirmed its validity. The application of this function is demonstrated using a recent filtration model based on the Kozeny equation. Prediction of the head loss, based on influent PSD function parameters alone, is possible in the filter working phase, and an equation for this aim is developed.

Keywords: deep bed; distribution; effluent; filtration; model; particle size

Document Type: Research Article


Publication date: 1994-09-01

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  • Water Environment Research (WER) is published monthly, including an annual Literature Review. A subscription to WER includes access to the latest content back to 1992, as well as access to fast track articles. An individual subscription is valid for 12 months from month of purchase.

    Water Environment Research� (WER�) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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