Sanitary Grit Treatment and Recovery Facility

Stantec

Edmonton, AB

Disposing of odorous sanitary grit collected from Edmonton’s wastewater sewer system at the Kennedale Works Yard became unsustainable and required an alternative solution. Stantec, in collaboration with EPCOR Water Canada, designed a state-of-the-art, purpose-built sanitary grit treatment and recovery facility at the Gold Bar Wastewater Treatment Plant. Treated effluent from the wastewater treatment plant is used in the facility to wash the sanitary grit material without using any potable water. The final effluent is then sent back to the Gold Bar plant for full treatment. Special attention was paid to air handling to effectively reduce odour, and noise modelling was completed to attenuate noise emanating from the plant. The first of its kind in North America, the facility can process and wash up to 3 m³ per hour of sanitary grit suitable for reuse for applications such as road construction or trench backfill.