Biogas Enhancement and Utilization at Hamilton's Woodward Avenue WWTP

The Woodward Avenue WWTP is being expanded and upgraded to approximately 450 ML/d, with allowance for further expansion to 500 ML/d inthe future, to treat wastewater from the City of Hamilton. The expansion will substantially change the quantity and characteristics of primary and secondary sludge generated. The preferred means of sludge management for the plant continues to include anaerobic digestion with enhanced biogas production. Biogas generation is anticipated to increase by 72 percent over the status quo by 2031. The resource can be recovered and revenue generated via Combined Hea and Power (CHP) or biogas purification. The potential revenue from either system is dependent on the unit rate of the electricity and biomethane. These rates will vary locally and may include renewable energy incentives. A Biogas Purification Unit (BPU) was installed at the Woodward Avenue WWTP as part of this project to supplement an existing CHP unit.