PEPSC groundwater pumping and treatment - Montreal

Montreal, Québec

The Pointe-Saint-Charles Business Park (PEPSC) in Montreal is made up of embankments directly on the bed of the St. Lawrence River. Having served as a dumping ground for over a century, it harbors contaminated soil and waste of all kinds. The City of Montreal engaged AtkinsRéalis as prime consultant to carry out the engineering, construction management, and commissioning of an innovative solution to pump and treat contaminated groundwater, thereby preventing further St. Lawrence River contamination. To achieve this, ammoniacal nitrogen was removed from the water using a physicochemical treatment method, Polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) are removed through adsorption onto granular activated carbon (GAC) filters, and a sludge dehydration and air treatment system were implemented to manage byproducts and ensure environmental compliance.

The jury was impressed by the innovative treatment process using struvite, which not only effectively treats wastewater but also acts as a fertilizer. They noted the project's impressive scale and significant impact on the community. Moreover, the project was recognized for addressing a longstanding issue of contamination, showcasing a commitment to long-term environmental sustainability.

For additional information on this project, click here.

Hear what the Jury Chair had to say about this project.