Replacement of a Drinking Water Supply and Treatment System

Duration: 2005 – 2006

Description

This project involved replacing the community’s drinking water supply and treatment system. Nanofiltration was implemented as a treatment process, followed by double disinfection with ultraviolet (UV) and chlorine (Cl). The drinking water treatment plant was upgraded entirely in accordance with MDDEFP standards and regulations. The project also included the construction of a raw water pumping station with associated mechanical processes and the installation of an influent conduit using trenchless technology, namely directional drilling.

Key Elements:

  • Implementation of a new surface water intake using directional drilling
  • Surface water treatment using nanofiltration

Localization: Kawawachikamach, Québec

PDF: on request

New Drinking Water Supply and Treatment System

Duration: 2011 – 2012

Description

This project included the installation of a water intake, a pumping station and an above-ground raw water influent conduit. Initially, a mechanism had been planned for raw water recirculation during winter to avoid freezing. The implemented treatment consisted of using a double membrane filtration (UF and NF). UF is a pretreatment to NF used to help lower NF backwash frequency and maintain membrane efficiency over a longer period of time. The construction of an underground reservoir made of concrete with a capacity of 1,300 m³ was also part of this project. Lastly, a pumping chamber was designed to provide a water distribution system and fire protection for the community.

Key Elements:

  • New surface water intake installed in the river
  • Surface water treatment using ultrafiltration (UF) and nanofiltration (NF)
  • Mechanical processes for raw water pumping, drinking water distribution and fire reserve pumping
  • Drinking water reservoir made of reinforced concrete

Localization: Wemindji, Québec

PDF: on request

Iron and Manganese Treatment for Drinking Water

Duration: 2012-2013

Description

This project consisted of implementing an easy-to-use treatment technology not requiring the addition of an oxidizing agent. A pilot study was conducted beforehand to assert ion exchange technology. This pilot study was successful and, subsequently, a full-scale treatment system was constructed.

Key Elements:

  • Iron and manganese treatment using ion exchange
  • Water remineralization and pH adjustment

Localization: Kangirsuk, Québec

PDF: on request