FP McCann has supplied its largest precast StormCleanser system to date to a recycling and waste management facility in Norwich.

The PSH Environmental ltd recycling facility is based on the Rackheath Industrial Estate. As part of its site extension plan, the onsite surface drainage network was upgraded to help deal with increased surface water run-off and improve interception and prevention of contaminants within the surface water run-off washing out into the site’s holding lagoon.

The 3600mm wide StormCleanser™ hydrodynamic separator unit was supplied from FP McCann’s Ellistown precast concrete plant in Leicestershire. The unit was installed by civil engineering contract MB Plant & Civils with DN900 pipes for the unit’s inlet/ outlet.

Surface rainwater and any pollutants enter the StormCleanser™ chamber via the inlet pipe where the internal layout then enables low energy vortex flow patterns to form. This allows floatable materials such as plastics, paper and other light debris to gather at the top of the system and heavier sediment to settle at the bottom of the treatment chamber for removal by standard gully suction equipment. A baffle plate located above the sediment storage sump prevents the re-suspension of solids. Treated water then flows out of the system back into the main drainage network.

Commenting on StormCleanser™, Matthew Body Managing Director of MB Plant and Civils says, “FP McCann delivered the 3600mm precast concrete StormCleanser™ chamber and the internal stainless steel components. It was then a simple task for our onsite team to assemble the unit which comfortably sits within the online drainage system”.

StormCleanser™ can be installed in precast concrete drainage chambers ranging from DN1200 up DN4000mm accommodating pipe diameters from DN150 up to DN900. Modular and bespoke designs are available for multiple inlet orientation with a choice of flow direction providing optimum configuration performance.