Control measures to reduce clogging in a St. Lawrence River water treatment process using slow sand filtration

Caroline Côté

Researcher, agr., Ph.D.

450 653-7368
ext 310

Contact Caroline Côté

Description

Previous studies showed that measures were required to control populations of E. coli and zebra mussel larva in water from the St. Lawrence. A system using slow sand filtration and an aerated pond was therefore installed at a farm on Île d'Orléans. Although this system has been proven to be effective for resolving both these problems, the sand filter can become clogged due to increased turbidity levels in the river at certain times of year and algal blooms in the water column above the filter. To manage this clogging risk, the project automated pumping based on water turbidity and cover the filter to prevent light from entering the water and thus reduce algal bloom. These control measures will improve technology transfer to other farmers who want to draw water from the river.

Objective(s)

  • Determine the impact of methods of controlling suspended solids and algae on clogging of the sand filter
  • Measure the effect of water turbidity on clogging of the sand filter in the lab
  • Automate pumping from the river based on water turbidity
  • Determine the effectiveness of covering the filter for algae control

From 2015 to 2018

Project duration

Market gardening, Fruit production, Field crops

Activity areas

Food safety and quality,

Services

Thanks to IRDA, it is possible for growers to tap into the Saint-Lawrence as an irrigation resource.

Partners

Ministère de l'Agriculture, des Pêcheries et de l'Alimentation du Québec | Université Laval | Ferme François Gosselin | Université de Sherbrooke

This may interest you

2016-2018 • Market gardening

Improve the efficiency of water use in different potato cultivars

The aim of the project was to measure the performance and water requirements of eight potato cultivars under commercial production conditions.

Researcher: Carl Boivin

Read more about the project

Carl Boivin
2019-2022 • Market gardening

Projet for a Web app to facilitate the viewing and interpretation of potato soil health analyses

This project aims to develop an accessible and user-friendly web application that let stakeholders search the IRDA potato soil database, one of the largest in Canada, to visualize the impact of growing practices and protocols on the biological, physicochemical, and agronomic characteristics of soils cultivated with different cropping systems.

Researcher: Richard Hogue

Read more about the project

Richard Hogue
2013-2018 • Market gardening

NPK fertilizer trials for beets on mineral soils in Québec

This project was aimed at determining the nutrient needs of beets based on soil texture and phosphorus and potassium levels under Québec growing conditions.

Researcher: Christine Landry

Read more about the project

Christine Landry
F