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Chlorine Dioxide Projects

Osorno has significant experience with a variety of disinfection technologies, but especially with chlorine dioxide disinfection, which we pioneered in Canada.

We prefer to use chlorine dioxide because:

  • It has a high persistence, and provides protection for a long time.
  • It is naturally safe; there is no need to transport or store chlorine dioxide - generators produce chlorine dioxide only when needed.
  • Chlorine dioxide destroys most harmful bacteria within seconds.
  • Unlike chlorine (Cl2), chlorine dioxide (ClO2) does not produce harmful by-products (trihalomethanes - THMs, or haloacetic acids - HAA).

Water Disinfection at Holland, Manitoba

In 2005, Holland, RM of Victoria, Manitoba, became the first public waterworks in Canada to use chlorine dioxide as its primary disinfectant instead of chlorine.  After we installed our chlorine dioxide technology, problems with water odours and staining disappeared.

Osorno worked with JR Cousin Consultants to design and install the treatment system. Osorno provided the equipment, chemicals, analytical services, and expertise for a demonstration project. After seeing the advantages of chlorine dioxide, the Town of Holland readily implemented it into their water treatment plant.

As a result of this project, the Association of Manitoba Municipalities gave Holland, Manitoba the Municipal Innovation Award.  The Consulting Engineers of Manitoba also gave JR Cousin Consultants an Award of Excellence.

The National Research Council of Canada and the Province of Manitoba partially funded the demonstration project.

Meadow Lake Tribal Council, Saskatchewan

Osorno assessed the water at the Makwa Sahgaiehcan First Nation water treatment plant (WTP) and the Island Lake First Nation water treatment plant under contract with JR Cousin Consultants.

Based on our assessment, we initiated two demonstration projects.  At Makwa Sahgaiehcan, we implemented chlorine dioxide disinfection and well water filtration.  At Island Lake, we implemented chlorine dioxide disinfection to prevent trihalomethanes (THMs) from forming in surface water.

Osorno provided equipment, chemicals, analytical services, and expertise for both demonstration projects.

Both demonstration projects proved how effective chlorine dioxide was at removing iron and manganese from water and for decreasing trihalomethane (THM) concentrations to well below regulatory limits.

Osorno also reviewed and assessed chlorine dioxide generation methods provided by JR Cousin Consultants during this project.

Niisaachewan Anishinaabe Nation, Ontario

Biinjitiwaabik Zaaging Anishinaabek Nation, Ontario

Since we introduced chlorine dioxide as a primary disinfectant in Holland, Manitoba, many more chlorine dioxide treatment systems have been installed.

Among them were the water treatment plants (WTPs) of the Niisaachewan Anishinaabe First Nation (formerly known as Dalles First Nation, Ontario) and the Biinjitiwaabik Zaaging Anishinaabek First Nation (formerly known as Rocky Bay First Nation, Ontario).

Both water treatment plants received their raw water supply from surface waters and had problems with trihalomethanes (THMs) forming. When we installed our chlorine dioxide treatment systems, issues with trihalomethanes disappeared, as chlorine dioxide does not form THMs.

The consulting engineer for both projects was JR Cousin Consultants. Osorno supplied chlorine dioxide generation and monitoring equipment, chlorine dioxide chemicals, and supervised installation and operator training.

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Osorno Enterprises Inc.
976 Elgin Avenue
Winnipeg, MB R3E 1B4

+1 204 488-1538 (Phone)
+1 204 488-1566 (Fax)
+1 204 294-1539 (Emergency)
Hours of Operation

We are closed on December 24 - 28, 2020 and
December 31, 2020 - January 4, 2021
Monday - Friday: 9:00 - 17:00
Saturday - Sunday:  CLOSED

In case of EMERGENCY please call (204) 294-1539.

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