Abstract: A stormwater separator includes a tank with a bottom wall and an upright sidewall, and an insert configured to divide the internal volume into an inlet region, an interior region and an outlet region. The insert is configured to define multiple flow openings for passage of water between the inlet region and the interior region. The insert is configured to provide at least one outlet opening through which stormwater exiting the interior region passes to reach the outlet region and then the tank outlet opening. Multiple deflector shields extend outwardly from the interior region, each deflector shield having a distal edge portion spaced inwardly from the upright sidewall. At least a first one of the flow openings is located at a height that are above a height of a downwardly angled skirt and below a height at which at least one of the deflector shields abuts to the interior region.

Abstract: A separator unit includes a tank defining an internal volume and having an inlet and an outlet. An insert is provided within the tank, the insert including a down cylinder substantially centrally disposed within the tank and a baffle assembly at an external side of the down cylinder. The baffle assembly defines first and second inlet flumes for flowing incoming water from an external side of the down cylinder to an internal volume within the down cylinder. Inward ends of the first and second inlet flumes are positioned and oriented to create first and second vortex flows that progress downward within the internal volume, wherein a rotational direction of the first vortex flow is opposite a rotational direction of the second vortex flow in top plan view.

Abstract: A separator unit includes a tank defining an internal volume and having an inlet and an outlet. An insert is provided within the tank, the insert including a down cylinder substantially centrally disposed within the tank and a baffle assembly at an external side of the down cylinder. The baffle assembly defines first and second inlet flumes for flowing incoming water from an external side of the down cylinder to an internal volume within the down cylinder. Inward ends of the first and second inlet flumes are positioned and oriented to create first and second vortex flows that progress downward within the internal volume, wherein a rotational direction of the first vortex flow is opposite a rotational direction of the second vortex flow in top plan view.

Abstract: A rainwater collection system is described which includes generally a rainwater routing system and a collection unit. The rainwater routing system may comprise a first flush diversion unit designed to discharge to a run-off path, an initial amount of rainwater such that initial particulate matter from rooftops, etc., are not collected. The rainwater routing system may comprise a pre-treatment unit, the pre-treatment unit designed to remove particulate matter from the rainwater. The collection unit of the rainwater collection system comprises a storage tank having an internal day tank compartment. The described rainwater collection system allows for the collection of rainwater with a substantially reduced amount of particulate matter.