Annacis Island and Lulu Island Wastewater Treatment Plants

Design services for a $1 billion, 10-year program to simultaneously upgrade two of Canada’s largest wastewater treatment plants, completed ahead of schedule and more than $90 million under budget. Both the128-mgd Annacis Island and 40-mgd Lulu Island WWTPs were upgraded to secondary treatment, including the implementation of cogeneration to provide more than half of the plants’ power needs. The plants were also the first in North America to implement Class A anaerobic thermophilic digestion to produce biosolids for 100-percent beneficial reuse.