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BUILDING TYPE
Municipal Applications
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COMPLETION
2015
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PROJECT TYPE
Renovation
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COUNTRY
Canada
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SIZE
48”RSC160, 54”RSC160, 72”RSC160. Total Length 200 meters plus various elbows, reducers and laterals
The Annacis Island Wastewater Treatment Plant
Due to the rapid growth of Metro Vancouver, the Annacis Island WWTP is undergoing an expansion to increase treatment capacity. The project will include the addition of a foul air system that will improve the air quality for the community living and working in proximity of the facility.
Tie-ins to the existing pipe is always difficult and the Infra Pipe technicians did an outstanding job on making these connections which had to be done within a 24 hour window.
Robbie Plavcic, Site superintendent of JJM Construction
About the project
The Annacis Island Wastewater treatment plant (WWTP) treats about 175 billion litres of wastewater every year. Located in Delta, BC this plant provides secondary treatment of wastewater for over 1 million residents in 14 municipalities. The treated wastewater is then discharged into the Fraser river.
The plant uses anaerobic digestion to break down organic materials from wastewater to produce biosolids and methane gas. The methane gas produced from this process is then used to generate the heat and electricity used to run the plant. The Annacis Island plant produces enough energy to meet 100% of its own heat requirements and about 50% of its electricity requirements. This in turn helps reduce its greenhouse gas emissions by 660 tones every year.
Due to the rapid growth of Metro Vancouver, the Annacis Island WWTP is undergoing an expansion to increase treatment capacity. The project will include the addition of a foul air system that will improve the air quality for the community living and working in proximity of the facility.
Optimal product requirement
In a foul air system, air is drawn from trickling filters through a piping network into a filtration facility in order to remove the odours. The material of choice for this highly corrosive application was Weholite.
Produced from corrosion-resistant, high-density polyethylene resin Weholite is impervious to exposure from hydrogen sulfide gas and sulphuric acid condensate. Available in large diameters Weholite is easily fabricated into a wide array of standard and custom fittings. Combining that with the product’s light weight and ease of handling, Weholite stood out as an ideal cost effective choice.
Brown and Caldwell, the project’s civil design consultant, specified leak-free joints as a system requirement. Weholite’s field extrusion welded joining system easily satisfied this important system design condition.
The lightness of the Weholite pipe and the strength of the welded joints enabled most of the pipe to be connected outside the trench and then lowered into place as one large spool piece.
Robbie Plavcic, Site superintendent of JJM Construction
On time delivery prerequisite
Onsite construction of the system presented an additional challenge. The existing plant facility could only be shut down for a very limited time period to accommodate this portion of the plant expansion. The contractor and Infra Pipe field technicians accepted the challenge and worked for 21 hours straight to complete the installation. In spite of paucity of time, a leak free system was successfully installed and tested.
Delivery of company’s commitment
Infra Pipe satisfied each of the demands presented by Metro Vancouver’s Annacis Island Waste Water Treatment Plant project. This displays Infra Pipe’s commitment to its customers and to the communities it serves. The Annacis Island project stands as a shining example of Infra Pipe’s dedication to partnering with professionals in order to provide the most efficient, reliable and high-performing designed solutions that enrich people’s way of life. For more information about Infra Pipe’s different products and services
