The San Francisco Public Utilities Commission has awarded a $939 million contract to replace the biosolid digester facilities at the city’s Southeast Water Pollution Control Plant — the largest wastewater treatment facility in San Francisco.
MWH Constructors and Webcor Builders, a construction joint venture, will serve as construction manager/general contractor.
The Southeast Water Pollution Control Plant was built in 1952 and is SFPUC’s largest wastewater treatment facility, treating 80 percent of San Francisco’s sewage and storm water flows. The Biosolids Digester Facilities Project aims to replace existing digester facilities with new, expanded, reliable, modernized and relocated facilities, as well as improve energy recovery and maximize control of odors.
The Biosolids Digester Facilities Project is one of the first projects in the United States to use the Cambi Thermal Hydrolysis Process (CambiTHP). The CambiTHP will enable the new facilities to produce higher quality biosolids, capture and treat odors more effectively, and maximize biogas utilization and energy recovery to produce heat, steam and energy.
Construction is expected to begin in summer 2018 with the facility becoming fully operational in summer 2025. The project will be constructed in two parts to allow for continued use of the facilities.
As the third-largest municipal utility in California, SFPUC provides more than 2.6 million residential, commercial and industrial customers with high-quality, efficient and reliable water services. The BDFP is part of the Sewer System Improvement Program, a 20-year, multi-billion-dollar citywide investment to upgrade aging sewer systems that aims to ensure a reliable, sustainable and seismically safe sewer system into the future.
