Seymour-Capilano Water Treatment Plant

The Seymour-Capilano WTP is Canada’s largest UV disinfection facility filtering over 1,800 million litres per day supplying 75 percent of Greater Vancouver’s drinking water.

Construction of the complex spanned some 4-1/2 years, commencing with forming and placement of 37,000 m3 of concrete and the erection of 900 tonnes of structural steel for the following structures; inlet blending, 12 flocculation cells, low lift pumping, 48 filter cells, equipment galleries, an operations and maintenance complex, backwash equalization and treat­ment facilities, and a residuals handling facility.

The work also involved the installation of an additional $35 million of own­er purchased equipment, including 24 flocculators, 48 filter underdrain systems, 24 UV reactors, switchgear, MCCs, transformers, generators, belt filter presses, blowers, sludge collection equipment, etc. Piping systems for the project include carbon steel up to 132 inches in diameter.

The project also involved construction of a post treatment facility contain­ing lime silos and dosing equipment for a 200,000 m3 clearwell reservoir.