Stormwater treatment system

A system for removing material from a flowing liquid, the system comprising:

• a housing;
• one or more cartridges disposed in the housing, wherein each cartridge has an outer permeable wall and an inner permeable wall that form a media region between the walls, wherein a media is disposed within at least part of the media region to remove at least a portion of the material from the flowing liquid, said cartridge also having an inner cartridge lumen in fluid communication with said inner permeable wall, and a cartridge outlet in fluid communication with the inner cartridge lumen;
• a cartridge chamber disposed in the housing and containing the one or more cartridges, wherein the cartridge chamber is bounded by a chamber floor and an end wall that defines a sediment capture region, and wherein the cartridge chamber also includes a chamber inlet and a chamber outlet that passes through the end wall, and wherein a conduit provides fluid communication between the chamber outlet and the cartridge outlet, and the conduit is positioned above the floor;
• and
• a support elevated above the floor of the cartridge chamber by legs and an hinged mount attached to a side wall of the chamber to laterally stabilize the one or more cartridges in the chamber, wherein at least a portion of sediment coming into the chamber through the inlet is deposited in the sediment capture region, and wherein said support may be swung to a position permitting cleaning of sediment from the floor;
• and
• an actuatable valve-wherein the valve controls a flow rate of the flowing liquid within the system by actuating in response to a change in a level of the liquid in the cartridge chamber.