Norwich based plant and civil engineering contractor MB Plant and Civils is undertaking the ground works and drainage infrastructure and has installed the 3600mm ID Stormcleanser™ hydrodynamic separator supplied from FP McCann’s Ellistown precast concrete plant in Leicestershire. Pipe inlet and outlet openings at 900mm have been pre-formed in the chamber as part of the manufacturing process.
The Stormcleanser™ unit as specified, is integral to the online site drainage infrastructure providing an additional and appropriate treatment stage for surface water prior to it being discharged from site. Surface rainwater and any pollutants enter the 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 and paper 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.
FP McCann’s StormCleanser™ is designed and either factory fitted as part of a standard precast concrete water management chamber or as in the case of this build, delivered to site in its component parts for simple installation by the groundworks team. The stainless steel vortex insert has no moving parts and provides exceptional longevity of service due to its high corrosion resistance.
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 1200mm (internal diametre) up to 4000mm (internal diametre) accommodating pipe diameters from 150mm up to 900mm. Modular and bespoke designs are available for multiple inlet orientation with a choice of flow direction providing optimum configuration performance.