Liquid purification or separation – Structural installation – Grated inlet surface drain
Patent
1998-08-21
2000-04-04
Simmons, David A.
Liquid purification or separation
Structural installation
Grated inlet surface drain
210483, 210495, 2105021, 404 4, E03F 506
Patent
active
060456914
ABSTRACT:
A apparatus for use in storm water openings equipped with a cover and openings that allow storm water into the storm sewer. The apparatus includes a plurality of troughs with a bottom and two sides that define the troughs. The troughs support an absorbent sock and directs storm water to openings between the troughs where the storm water discharges into a semi-permeable bag prior to discharge down the storm sewer. The troughs are equipped with small openings at each end and on each side of the trough with the purpose of holding a semi-permeable bag between two troughs. The structure, absorbent sock and semi-permeable bag are located on the peripheral portion of the storm sewer inlet. The structure is installed on the same support for the cover by a thin lip and the cover is placed on top of the lip. The absorbent sock provides the first stage of treatment of the storm water. The semi-permeable bags are inserted between the troughs and act as the second stage of treatment and have the dual purpose of allowing the water to flow through to filter out particulate matter and allowing storm water to collect within and fill up the bag thus enabling lighter fractions within the storm water such as oils and grease to float to the top of the bag and contact the absorbent prior to discharge. The apparatus can also be modified for catch basins without a cover.
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Prince Fred
Simmons David A.
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