Annacis Island Wastewater Treatment Plant: Stage 5, Phase 1 Upgrade

Date Posted : May 1, 2017

in : Projects

Metro Vancouver is serviced by five wastewater treatment plants. The Annacis Island wastewater treatment plant is among the largest, treating about 175 billion liters of wastewater each year. The plant is designed both as a primary and secondary treatment plant.

Vancouver is expected to grow to a total population of 3.4 million by 2041—a growth of about 1 million residents. The increased population will weigh heavily on the city’s existing infrastructure, requiring upgrades or new developments to fill the gap. A key initiative to help meet the region’s wastewater treatment needs is the expansion of the Annacis Island wastewater treatment facility.

The expansion to the Annacis wastewater treatment facility will take place over several years and comprises over 20 projects that will ultimately improve the facility’s capacity. These currently planned expansion projects are being conducted in phases and include new trickling filters, secondary clarifiers, and a co-generation facility that will improve the energy generation from the recycled energy captured on site. The expansion will also feature a new outfall pipe. Overall, all the expansion project together will increase the volume of treated wastewater, improve the generation of on-site green energy, and manage odor. Eventually, the facility will also be able to quickly recover and resume operating even shortly after a major earthquake.