STORMWATER TREATMENT APPARATUS

摘要

This invention relates generally to liquid purification and separation (Class 210) and, more specifically, to an apparatus for separation of pollutants in stormwater runoff from the runoff water. 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. This invention is differentiated from prior art by improved resistance to pollutant remobilization, resulting from an iterative experimental hydraulic design process. In addition, this invention provides a degree of retention through volume-control that exceeds that provided by existing gravitational, sub-surface, stormwater treatment systems. This invention is intended to mitigate the impacts of stormwater runoff from urban areas on receiving environments, which have been documented extensively in engineering and scientific literature.