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    3. Precoat Filtration (M30): AWWA Manual of Practice

    Precoat Filtration (M30): AWWA Manual of Practice

    Posted By: insetes
    Date: 20 Oct 2018 15:27:41
    Precoat Filtration (M30): AWWA Manual of Practice

    Precoat Filtration (M30): AWWA Manual of Practice By American Water Works Association
    1995 | 52 Pages | ISBN: 0898677874 | PDF | 6 MB


    This manual explains applications and operation of precoat filtration, also called diatomaceous earth (DE) filtration, for potable water treatment.In precoat filtration, unclarified water contaning foreign particles is forced, under pressure or by vacuum, through a layer of DE filtering media that has been deposited (precoated) on a septum. As the water passes through, suspended particles are captured and removed. Average DE pore sizes are much smaller than the pore sizes of conventional filter media, such as sand, allowing precoat filters to capture smaller particles than conventional filters. Perlite is also used as a precoat filter media
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