The Removal of Emerging Contaminants that Are Challenging in Wastewater

The Removal of Emerging Contaminants that Are Challenging in Wastewater ...

Currently, treatment systems allow for half of the emerging contaminants found in wastewater to go through. However, scientists are developing new technologies to enhance infrastructure and remove harmful contaminants that would otherwise be discharged into waterways. Through this study, the researcher questioned whether a particular type of contaminants causes hormonal disruptions.

Efficient technologies

Ozonation, a powerful oxidizing gas, breaks down pollutants through a chemical reaction. This is why the Jean-R.-Marcotte wastewater treatment facility was created. Adsorption with activated carbon is another important component of water treatment. Regardless of whether or not the material is in powder or granular form, this material is also effective.

ProfessorBlais presented his study with a focus on electro-oxidation processes and membrane bioreactors. The first technique involves two electrodes to degrade pollutants. The second technique involves a membrane (to filter out some of the contaminants) and biological organisms (to degrade what passes through it).

In the work of ProfessorPatrick DroguisLaboratory of Environmental Electrotechnologies and Oxidative Processes, these two approaches are being developed.

All of these emerging technologies have the advantage of being able to be added to existing treatment facilities, mostly downstream of the current systems, according to ProfessorBlais.

Eventually, these improvements would enhance the effectiveness of existing water treatment technologies without requiring significant improvements to municipal facilities.

The issue of Lac Saint-Charles

Following concerns about the water quality of its main supply, Lac Saint-Charles, the City of Quebec quickly became interested in these innovative treatment methods. It therefore required the INRS team to seek effective solutions to this problem as well as to connect its sewer system.

According to Blais, many remote residences are using septic tanks and absorption fields. We wanted to brainstorm alternatives, such as stand-alone treatment solutions for homes, to help them connect themselves without sacrificing the health of our aquatic bodies.

ProfessorBlais, ProfessorSophie Duchesne, Research Officer Genevieve Rioux, and Priscille Ahossi, a masters student in professional studies in water sciences, submitted a review and recommendation report revealing the city''s possible implementation goals.

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