Elora WWTP and Clyde Street Sewage Pumping Station

The Township of Centre Wellington initiated this project to evaluate options to secure additional wastewater treatment capacity at the Elora Wastewater Treatment Plant, improve effluent quality discharge from the facility to enhance the aquatic eco-system of the Grand River and improve biosolids management.

• Completion of a Schedule C Municipal Class Environmental Assessment to evaluate options to increase sewage treatment capacity in the community of Elora including consultation with First Nations Communities, government approval agencies and the general public, publication of an Environmental Study Report and resolution of a Part II Order request
• Recommended solution included continued water conservation and infiltration/inflow efforts in the long term and expansion of the treatment plant and pumping station in the short term
• Assisted municipality in developing a 10 year capital program to address infiltration/inflow directed towards reducing incidence of by-passes to the Grand River
• Secured revised effluent criteria for the WWTP through the completion of an Assimilative Capacity Study of the Grand River and negotiations with the Ministry of Environment and Climate Change
• Completed final design and construction contract administration for both facilities where the average day flow capacity of the treatment plant was increased to 5,000 m³/day from 3,066 m³/day and the pumping station peak flow capacity was increased from 113 L/s to 173 L/s.
• Treatment plant design included new headworks, automated aeration system to minimize energy consumption, secondary clarification (new and rehabilitation of existing facilities), tertiary filtration, UV disinfection, centrifuge sludge thickening, Lystek® biosolids stabilization, biosolids storage, standby power and BIOREM® odour control
• Pumping station design included expansion of the wet well including a new basket screen, complete rehabilitation of the dry well including implementation of a jockey pump/storm pump system (3 pumps total) to accommodate the wide flow variation at the facility and the provision of standby power.
• Secured funding through federal and provincial funding programs
• Construction value = $21.4 million