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Hespeler Wastewater Treatment Plant Upgrades and MABR Design Concept

Addressing current needs while keeping an eye to the future

  • 9

    Million Liters/Day

  • Cambridge, Ontario

    Cambridge, Ontario

Developing a site layout that allows for maximum flexibility

Stantec helped the Region of Waterloo upgrade the Hespeler Wastewater Treatment Plant, while also piloting a promising new technology – Membrane Aerated Bioreactors. The MABR process is significantly more efficient than conventional activated sludge, with the potential to save tens of thousands of dollars per year in operating costs, while also using a smaller footprint.

We were tasked with undertaking a technical and financial analysis for retrofitting to MABR, as well as designing current upgrades to accommodate the technology in the future. Our team established design criteria and operating parameters to retrofit the existing aeration tanks for MABR, summarized the equipment required, and developed a memorandum outlining required changes to the existing treatment processes. We also completed a life-cycle cost and return on investment analysis.

The upgrades included adding a new headworks building, dewatering system, administration facilities, and secondary clarifier, as well as electrical upgrades. We incorporated flexibility into the upgrades to accommodate a future MABR upgrade with minimal costs. This included designing for the appropriate future screening requirements and developing a site layout that allows for maximum flexibility.

At a Glance

Meet Our Team

Susan Alarcon, Senior Associate, Water

Our team brings valuable water solutions and resources to communities across Ontario, improving the quality of life for everyone living there.

J. Neil Harvey, Senior Project Manager

In a world that seeks instant gratification, our industry must consider that our projects can last for generations.

Chrissy Jung, Team Leader, Treatment

I enjoy working on a diverse range of projects to develop engineering solutions that benefit the communities I love.

Nicole McLellan, Regional Practice Leader, Water (Canada East)

Complex interdisciplinary challenges can be solved with creative solutions and a dynamic team of dedicated individuals.
Nicole McLellan Regional Practice Leader, Water (Canada East) Read More

Olav Natvik, Project Manager

Delivering creative treatment solutions with a triple bottom line—social, environmental, and financial—is my focus.

Srdjan (Sergio) Stevandic, Senior Associate

I help turn complex community needs into cost-effective, manageable, practical, and long-lasting solutions.
Srdjan (Sergio) Stevandic Senior Associate Read More

Elvio Zaghi, Principal

My solutions must incorporate technology and design to best protect the natural and recreational assets in our communities.

Susan Alarcon

Senior Associate, Water

J. Neil Harvey

Senior Project Manager

Chrissy Jung

Team Leader, Treatment

Nicole McLellan

Regional Practice Leader, Water (Canada East)

Olav Natvik

Project Manager

Srdjan (Sergio) Stevandic

Senior Associate

Elvio Zaghi


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  • Design your career

    Work with passionate people who are experts in their field. Our teams love what they do and are driven by how their work makes an impact on the communities they serve.

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