Method of feeding wastewater effluent to filter bed through para

Liquid purification or separation – Processes – Separating

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137 1, 138104, 405 40, 405 44, 405 48, 405 51, 210 90, 210258, B01D 2100

Patent

active

053605560

ABSTRACT:
An on-site wastewater treatment system distributes septic tank effluent over a particulate media filter bed through a distribution manifold at a sufficient volumetric flow rate relative to the cross-sectional area of the distribution conduits to inhibit undesirable biological growth in the conduits and in the filter by creating a scouring effect in the conduits. This effect prevents clogging of the conduits and maximizes the even distribution of effluent in the filter. A mesh fabric intercepts the downward flow of the effluent in the filter to further aid in the even distribution of effluent in the filter. Orifice shields also aid in such distribution by preventing clogging of orifices embedded in the filter media. A high pressure switch in the distribution manifold and a high water alarm in the filter pump basin indicate when required maintenance is necessary, and the switch controlling the high water alarm temporarily disables the septic tank pump as well. A flush system is provided to easily remove any clogging solid material from the distribution manifold.

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Gravity Sanitary Sewer Design and Construction; ASCE Manuals and Reports on Engineering Practice No. 60; WPCF Manual of Practice No. FD-5 (1982) p. 122, title page and page ii.

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