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US 11,103,814 B2Granted
Saturated layer stormwater filter and passive stormwater management system with pretreatment
AssigneeStormwateRx, LLC
InventorsCalvin Paul Noling, Daniel Michael Joseph
Life of this patent
Estimating the term…
Abstract
A saturated layer stormwater filtering system with down-flow layered multimedia filters is disclosed. The filtering system may include an upflow pretreatment chamber and a subsequent filtration chamber. It also includes a snorkel pipe as an adjustable head control or internal baffles. The system incorporates gravity powered partially saturated stormwater media filters to harness the potential energy of stormwater from downspouts and pumped flows from stormwater catchments to drive the polluted stormwater in a hydraulically controlled fashion by gravity through a series of filter media layers.
Claims20
A two-chamber stormwater filter system comprising:
- a pretreatment chamber having an upper chamber and a lower chamber including:
- an inlet pipe disposed at a bottom of the pretreatment chamber to receive stormwater influent and configured to deliver the stormwater influent to the lower chamber of the pretreatment chamber;
- a pretreatment filtration media layer positioned continuously above lower chamber for stormwater influent pretreatment configured to receive an upward flow of stormwater influent from the lower chamber inlet pipe and discharging a pretreated stormwater output to the upper chamber;
- a filtration chamber including:
- layered saturated and unsaturated filter media with a barrier layer therebetween, and configured to receive the pretreated stormwater output from the upper chamber of the pretreatment chamber at a filtration chamber top inlet;
- and
- a distribution header with an inlet opening and a distribution outlet to receive and distribute the pretreated stormwater over the surface of the layered saturated and unsaturated filter media, the inlet opening being positioned above the layered saturated and unsaturated filter media wherein the distribution outlet has a first row of apertures having a first diameter and a second row of apertures having a second diameter larger than the first diameter;
- a frame to support the filter system and containing the pretreatment chamber and the filtration chamber in a side by side arrangement;
- and
- an effluent pipe to collect the treated stormwater from the filtration chamber for discharge;
- and
- a rotatably adjustable conduit coupled to the effluent pipe for maintaining a desired water level in the filtration vessel.
9 more elements
A two-chamber stormwater filter comprising:
- a pretreatment chamber having an upper chamber and a lower chamber with a filter disposed therein between the upper chamber and the lower chamber, wherein the pretreatment chamber is configured with an inlet to fill the lower chamber with stormwater from a bottom of the pretreatment chamber, and an outlet positioned at a top of the pretreatment chamber, and further wherein the stormwater received via the inlet flows in an upward direction through the filter and out of the top of the pretreatment chamber;
- a vessel disposed in horizontal relationship to the pretreatment chamber, the vessel and pretreatment chamber supported by a framed structure;
- an inlet pipe coupled to the outlet of the pretreatment chamber disposed at a top portion of the vessel, and entering the vessel through an inlet aperture;
- a distribution header coupled to the inlet pipe with a plurality of apertures wherein the plurality of apertures includes a first row of apertures having a first diameter and a second row of apertures having a second diameter larger than the first diameter;
- a plurality of unsaturated filter media layers disposed below and in substantially parallel orientation to the distribution header in a vertical stack of layers;
- a plurality of saturated filter media layers disposed below and in substantially parallel orientation to the plurality of unsaturated filter media layers in a vertical stack of layers;
- a barrier seal disposed about a perimeter of the inside of the vessel, and between adjoining media layers;
- and
- a bottom collection device disposed at the bottom of the vessel and below the plurality of saturated filter media layers extending through an aperture disposed in the vessel.
6 more elements
Dependencies are inferred from the claim text.