A method, system, and apparatus directed to an innovative approach for the treatment of stormwater utilizing hydrodynamic separator assembly designed to maximize flow movement for more efficient sediment removal and maximize clearance space within assembly to facilitate cleaning and increase storage capacity of trash, debris, and sediment.

A liquid quality system for removing particulates from liquid (e.g., storm-water runoff). The system can include tubular portion (e.g., a manhole). The tubular portion has an inlet and an outlet. The system includes liquid quality device. The liquid quality device includes a partitioning portion. The partitioning portion has a first region including a funnel shape with a sump inlet aperture. The partitioning portion also has a second region including a sump outlet aperture and optionally a sump access aperture. A sump region is located between a base portion and the partitioning portion, wherein a flow of the liquid travels from the inlet in the tubular portion, into the funnel, through the sump inlet aperture, into the sump region, through the sump outlet aperture, and out the outlet of the tubular portion. At least one drag-inducing portion is positioned proximate the tubular portion in the sump region and projecting inwardly towards a central axis of the sump region.

A method, system, and apparatus directed to an innovative approach for the treatment of stormwater utilizing hydrodynamic separator assembly designed to maximize flow movement for more efficient sediment removal and maximize clearance space within assembly to facilitate cleaning and increase storage capacity of trash, debris, and sediment.

A curb inlet filter adapted to work in conjunction with a curb inlet comprised of permeable filter fabric fashioned generally in a V cross section, comprising an upper and lower fabric layer separated by one or more gussets. A user inserts the curb inlet filter into a curb inlet and may apply pressure to push the filter into the curb inlet causing the gussets to compress as the invention enters the curb inlet and resulting in a press fit between the gussets supporting the upper and lower permeable filter fabric layers. The compression fit retains the inlet filter into place and the curb inlet. Water may pass through the permeable filter fabric, while the permeable filter fabric prevents sediment and other unwanted debris from entering the storm water drainage system.

A liquid quality system for removing particulates from liquid (e.g., storm-water runoff). The system can include tubular portion (e.g., a manhole). The tubular portion has an inlet and an outlet. The system includes liquid quality device. The liquid quality device includes a partitioning portion. The partitioning portion has a first region including a funnel shape with a sump inlet aperture. The partitioning portion also has a second region including a sump outlet aperture and optionally a sump access aperture. A sump region is located between a base portion and the partitioning portion, wherein a flow of the liquid travels from the inlet in the tubular portion, into the funnel, through the sump inlet aperture, into the sump region, through the sump outlet aperture, and out the outlet of the tubular portion. At least one drag-inducing portion is positioned proximate the tubular portion in the sump region and projecting inwardly towards a central axis of the sump region.

A water purification housing capable of purifying water and a rainwater purification system using the water purification housing are provided. The water purification housing filters treated water by filling filter media in a housing body and then passing the treated water through the filter media and removes residue caught in the filter media as a result of the use of the filter media by collecting the residue in a sediment discharge container positioned at a bottom portion of the housing body. The rainwater purification system includes an element that connects and installs several water purification housings and an additional filtration element including fiber filter and UV lamp which can filter materials that cannot be filtered only by the filter media at the end of the rainwater purification system.

A rain overflow basin for collecting and storing rainwater, mixed water, or wastewater, has an inflow, an outflow, a basin chamber, a basin spillway, which is equipped with a weir threshold and is connected downstream of the basin chamber. A drain discharges the basin spillway, and a purification device purifies water flowing from the basin chamber to the basin spillway. A retention wall between the basin chamber and the basin spillway dams up water accumulating in the basin chamber. Water draining from the basin chamber is dammed up in a storage space is between the retention wall and the weir threshold, to reach the basin spillway via the weir threshold. The retention wall includes a passage opening. A purification device extends into the basin chamber such that water draining from the basin chamber through the passage opening into the storage space flows through the retention element.

A method and apparatus for preventing the escape of hazardous materials from fluid flow control systems of the character used by municipalities for carrying runoff storm water away from streets and populated areas.

A stormwater drain baffle to be disposed in a flow-through stormwater sump or chamber for baffling a stormwater flow-path. The baffle has a plurality of openings distributed over the area of the baffle. The baffle comprises at least two baffle portions connected to each other. The baffle portions are disposed near to and in superposed relation to each other, so that the baffle portions overlap each other and are adjustably connected to each other for adjusting the width (W.sub.tot) of the baffle. At least the outermost baffle portions of the baffle comprise fixing members which are monolithic with the baffle portion and adapted for fixing the baffle to the vertical inner wall of the sump or the chamber.

A method, system, and apparatus directed to an innovative approach for the treatment of stormwater utilizing hydrodynamic separator assembly designed to maximize flow movement for more efficient sediment removal and maximize clearance space within assembly to facilitate cleaning and increase storage capacity of trash, debris, and sediment.