FlowGuard is a modular system designed for installation in standard 300 width linear strip drains and stormwater pits. Integrating seamlessly into areas such as driveways, car parks and roof outlets, this device treats incoming stormwater flows before allowing filtered stormwater to pass from the outlet into the drainage channel.
Ideal for retrofit applications, the FlowGuard uses a multiphase treatment process to improve water quality. A SQIDEP-verified stormwater treatment device, its verified treatment efficiencies demonstrate pollution removal rates of 88% Total Suspended Solids (TSS), 69% Total Phosphorus (TP), and 67% Total Nitrogen (TN).
FlowGuard’s treatment process occurs in a multistage process.
- Initially, stormwater enters through the top cover, where larger gross pollutants are physically screened. This area of the device captures solids such as stones, leaves, and debris, and is fitted with a rubber seal to ensure flows are directed through the device without bypassing treatment.
- After initial treatment, stormwater flows are passed through a sedimentation box, where organic matter, sediment and other particulates are captured.
- The last phase of treatment occurs in a performance-engineered filter media contained in a specially designed internal bag. This media provides tertiary filtration and polishing, removing fine suspended solids (TSS), nutrients (TN and TP), and dissolved metals.
By providing multiphase stormwater treatment in a condensed footprint, FlowGuard can effectively improve the quality of incoming flows at the source – reducing pollutant transport, protecting waterways, and supporting Water Sensitive Urban Design (WSUD) outcomes.
