Construction of Concrete Reservoirs in PVC Formwork for Aquaculture

Summary:
The project consisted in building and testing three reservoirs for fish breeding for Pisciculture McKenzie that were made with the technology developed by DC International. DC International designed a PVC forming system that enables the construction of large reservoirs. This technology has been used for about 10 years in the construction of reinforced concrete housing. Reservoirs for aquaculture purposes were produced using this technology, but the reservoirs were never tested in the field.

The forming system was therefore adapted for construction of circular PVC/concrete reservoirs that are waterproof with a smooth interior wall. Permeability, bacteria growth, drinking water and chemical resistance tests were then conducted by the Centre de recherche industrielle du Québec (CRIQ). The CRIQ's tests showed that the PVC forming system manufactured by DC International complies with the NSF-61 standard regarding drinking water, does not promote bacteria growth on surfaces and can be used with complete confidence for fish farming.

The project results prove that the forming system tested enables large reservoirs to be constructed quickly by a non-specialized workforce at a competitive price. The PVC lining assures a maintenance-free, imperfection-free finish at a cost similar to the usual membrane that must be replaced every five years. These reservoirs are solid, waterproof, maintenance-free and insulated in order to control the temperature of the water. Moreover, the smooth surface protects the fish from scratches and injury.

This technology represents a very beneficial innovation for all fish producers and can serve as an inspiration for the entire industry in Canada and abroad.

Project Lead: Pisciculture McKenzie

Total project cost: $122,250

DFO-AIMAP contribution: $82,000

Other financial support:

• Recipient: Pisciculture McKenzie
• DC International

For more information on this project, contact the regional coordinator.

Quebec Region: Pierre.Lauzier@dfo-mpo.gc.ca