Solids retention in stormwater system
AssigneeInfiltrator Systems, Inc.
InventorsJonathan F. Smith, Bryan A. Coppes
Life of this patent
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Abstract
Apparatus for receiving and dispersing stormwater beneath the earth surface is comprised of an array of chambers, preferably having arch shape cross section, buried in crushed stone. Surface stormwater flows first through a diverter, then into a solids retention subsystem (SRS), and then into the array of chambers, which is spaced apart in the stone from the SRS. The SRS chambers are layered with geotextile or other filtering media. Solids entrained in the stormwater are retained in the SRS by a combination of settling and filtering actions. If the stormwater inflow exceeds the capacity of the SRS, the water level rises in the diverter to the point where it flows through a bypass line, directly to the chambers of the array.
Claims20
Stormwater handling apparatus, for receiving stormwater from a surface drainage system, which comprises:
- an array of chambers buried beneath the surface of the earth within permeable media, for receiving and dispersing stormwater;
- and,
- a solids retention subsystem, for receiving stormwater from said surface drainage system, for removing solids from the stormwater by a combination of settling and filtering, and for discharging the resultant partly clarified stormwater to said array;
- wherein the solids retention subsystem is buried within and spaced apart from said array within said permeable media;
- and wherein stormwater discharged from the solids retention subsystem flows into said permeable media and then into said array.
Stormwater handling apparatus, which comprises:
- (a) subterranean solids retention subsystem means comprised of chambers buried within permeable media, for receiving stormwater flowed from a surface drainage system, for removing solids from the stormwater therein by a combination of settling and filtering, and for discharging the resultant partially clarified stormwater into the permeable media surrounding the subsystem;
- (b) means for flowing said partially clarified stormwater through the permeable media into an array of one or more chambers spaced apart from the solids retention subsystem and buried within the permeable media, so the stormwater may be then detained within, percolated from, and or discharged from, the array of chambers.
A method for handling stormwater, which comprises:
- (a) flowing stormwater from a surface drainage system into a subterranean solids retention subsystem which is comprised of chambers buried within permeable media, removing solids from the stormwater therein by a combination of settling and filtering, and discharging the resultant partially clarified stormwater into the permeable media surrounding the subsystem;
- (b) then flowing said partially clarified stormwater through the permeable media into an array of one or more chambers spaced apart from the solids retention subsystem and buried within the permeable media, so the stormwater may be then detained within, percolated from, and or discharged from, the array of chambers.
Dependencies are inferred from the claim text.