Stormwater treatment apparatus and method

Details Stormwater treatment apparatus and method Stormwater treatment apparatus and method

2006-09-22

2009-12-29

Lawrence, Frank M (Department: 1797)

Liquid purification or separation

Processes

Including geographic feature

C210S201000, C210S170030, C210S521000, C210S532100, C210S533000

Reexamination Certificate

active

07638065

ABSTRACT:
A liquid purification and separation apparatus for separation of pollutants in stormwater runoff is disclosed. This apparatus utilizes gravitational separation and tortuosity, resulting from a plurality of baffles both perpendicular to and oblique to the primary water flow direction, to trap substances less-dense and more-dense than water. The apparatus features improved resistance to pollutant remobilization through treatment of water volume rather than flow rates, using vertically stacked water columns of varying depths to settle small particles. An overflow structure diverts excessive liquid without interfering with purification and separation, and can be placed integrally within or external to the apparatus receptacle.

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