The GNPCC uses chemically-enhanced primary treatment to remove 30-40% of BOD and 50% of TSS. It also uses a cogeneration system that converts waste gas from the digesters to electricity that can be used to power the plant. To learn more, please visit our Treatment Processes page. Upgrades are underway to provide secondary treatment to improve effluent quality. Secondary treatment is able to remove up to 90% of BOD and 50% of TSS.
Effluent is discharged into the Strait of Georgia 2,030 m offshore at a depth of 70 m. A study is now underway to determine the scope of a Receiving Environment Monitoring Program to monitor the effects of the disposal of effluent to the marine environment.