‘This document outlines procedures for disinfecting water mains as part of an addition, modification, replacement, extension, planned maintenance, or emergency repair in a municipal residential drinking water system. The procedures are required to be followed in order to satisfy conditions imposed by the Director in a drinking water works permit. (MECP, 2020)’
The following links provide information on natural organic matter (NOM) and the formation of disinfection by-products (DBPs) when a chlorine-based disinfectant is introduced in drinking water. Information on treatment strategies to reduce both NOM and DBPs are included in this post.
Abstracts & Articles
Pilot Testing Project Reports
Pilot Testing Project Summaries
The Walkerton Clean Water Centre (WCWC) is excited to launch live virtual delivery of four popular courses. Each of the courses will be delivered from 8:00 am to 12:00 p.m. over two days:
- Disinfection: Chlorine – June 23 & 24, 2020
This course will introduce basic concepts related to chlorine disinfection. It will cover chlorine chemistry, its application in various forms, and factors that affect chlorine reaction. Participants will examine breakpoint chlorination, CT concept and dechlorination. Hazards associated with the use of chlorine, safety precautions and safety equipment will also be discussed. This course will be most beneficial to newer drinking water treatment operators with a basic understanding of chlorination.
- Emerging Issues – June 29 & 30, 2020
This course will provide details on some of the most recent issues facing drinking water systems. The detection of toxins associated with cyanobacterial blooms will be discussed, as well as disinfection by-products and emerging pathogens. Participants will also learn about newly discovered routes of exposure to pathogens and recently discovered pathogens that pose a threat to drinking water. Discussions will include current and proposed regulatory information along with proposed treatment techniques. This course is designed for more senior drinking water treatment operators (Class II through IV), but will be of benefit to all water treatment professionals, engineers and inspectors.
- Prevention and Control of Nitrification – July 7 & 8, 2020
This course will examine chloraminated drinking water facilities and utilities with high concentrations of ammonia in their water source that could cause nitrification. Participants will learn the history of chloramination, the formation of chloramine and the basics of nitrification. The conditions that promote and impact nitrification control measures for water quality and treatment, distribution system operations and maintenance and distribution system design. This course is designed for experienced operators, supervisors, managers of water utilities and consultants.
- New Watermain Commissioning – July 9 & 10, 2020
This course will familiarize participants with the minimum disinfection and sampling requirements outlined in the Watermain Disinfection Procedure. Material will address the commissioning process from pre-project planning, construction, disinfection and final connections. This course is directed to new and experienced distribution operators and contractor personnel involved with new watermain commissioning.
WCWC offered a pilot session of its first virtual course and received positive feedback from participants,
“The instructor did an excellent job of setting the pace early in the course. Breaking it up into two half days is exactly the right amount of time to be glued to a computer.”
These live training sessions will provide opportunities for interaction between the instructor and participants. Participants will require access to a computer with internet connection, web camera and microphone, Zoom, YouTube and SurveyPlanet (links will be sent by chat during the Zoom session). A course manual will be couriered to each participant prior to the course. Each course has a Continuing Education Unit (CEU) value of 0.7. The cost to register is $245 + HST.
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