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Water ManagementEasi-Hydro SeparatorP45IntroductionFP McCann have designed and developed a new range of Hydrodynamic Separators for the treatmentof urban catchment storm-water runoff. The Easi-Hydro Separator provides a cost effective solution fordesigners, engineers and contractors involved in the provision of sustainable urban drainage systems. TheEasi-Hydro Separator has no moving parts, requires no power and is constructed in precast reinforcedconcrete. All internal components are manufactured in GRP and stainless steel ensuring long asset life.The Easi-Hydro Separator has been independently tested by WRc and total solids removal rates havebeen measured ranging from 85 to 92%. The Easi-Hydro Separator is also effective in the removal ofhydrocarbons, litter and other storm-water debris.OperationThe Easi-Hydro Separator is specifically designed to remove suspended solids, hydrocarbons and floatabledebris from the storm-water runoff. The Easi-Hydro Separator chamber is constructed in precast reinforcedconcrete and supplied complete with a unique, factory installed, GRP flow management module. Thisunique design produces low energy vortex flow patterns allowing the solids to settle to the bottom of thetreatment chamber for subsequent removal. Re-suspension of the solids is minimised by provision of a GRPbaffle plate positioned above the solids storage sump. Floatable debris is retained within the Easi- HydroSeparator and prevented from discharging by a dip outlet pipe and launder channel arrangement.Flows to treatment are controlled by a specially designed launder channel and inlet pipe arrangement.Flows in excess of the maximum treatment flow overflow a weir, bypass the treatment zone and directlydischarge through the outlet pipe. This helps to minimize the effects of scour within the treatmentcompartment and optimises the performance of the unique Easi-Hydro Separator.Easi-Hydro Separator45www.fpmccann.co.ukprecast@fpmccann.co.uk