Lakeshore Wastewater Treatment Plant Expansion
Enhancing capacity, flexibility, and performance for Innisfil’s growing future.
InnServices Utilities Inc.
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Innisfil, Ontario, Canada
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2019-2028
One of the first large-scale implementations of the biological nutrient removal process in Ontario.
The largest capital project ever undertaken by InnServices Utilities Inc.
Expanded plant capacity from 17 ML/d to 25 ML/d, with provisions for 40 ML/d to meet future population growth.
Challenges
- As part of the town of Innisfil’s master servicing plan, the Lakeshore Wastewater Treatment Plant (WWTP) needed to significantly expand its capacity to meet the requirement for the town’s future growth and improve the overall quality of the treated wastewater before its discharge to Lake Simcoe.
- Originally built in 1987, the WWTP also needed to change its treatment process to meet total phosphorus effluent criteria, which is required for discharge to Lake Simcoe.
- The project aims to upgrade the existing WWTP’s treatment process from an extended aeration treatment process to a biological nutrient removal (BNR) process.
Solutions
- Expansion upgrades include a new headworks building with mechanical fine screens and vortex grit removal, primary clarification, BNR reactors for biological phosphorus and nitrogen removal, secondary clarification, tertiary membrane filtration, an ultraviolet disinfection system, and sludge management.
- Led and supported upgrade and expansion design, permitting and approvals, consultation with First Nation communities, and project tendering and post-tendering changes with contractors and the client.
- Provided ongoing coordination, project management, and contract administration during design and construction stages, including coordination and management of sub-consultants and sub-contractors.
- Facilitated extensive consultation and engagement with local First Nations communities, including Curve Lake First Nations, prior to the tender process, to ensure that Aboriginal and Treaty Rights were identified, mitigated, and accommodated wherever possible.
Highlights
- One of the first large-scale implementations of the BNR process in Ontario, and represents the largest capital project ever undertaken by InnServices, based on project cost.
- Expected to increase plant capacity from 17 ML/d (megaliters per day) to 25 ML/d, with provisions in place for future expansion to 40 ML/d to meet the town’s expected growth and service requirements.
- Developed detailed sequencing of construction activities to minimize service interruptions and ensure continuous plant operations throughout construction.
Project Numbers
17 ML/d, current plant capacity25 ML/d, expected plant capacity after upgrades, with provisions to reach 40 ML/d
$290 million, estimated project cost