The purpose of this project is to increase anaerobic digestion capacity at SSWRF. Expanding the capacity of the digesters will mitigate risk associated with inadequate capacity, increase the ability to produce more renewable energy as digester gas, and reduce energy use by reducing the digested sludge mass. The scope of this project includes the design and construction of two new processes for SSWRF, gravity thickening, and acid phase digestion. This is a Biosolids Advanced Facilities Plan recommended project. The existing anaerobic digestion process is experiencing operational issues related to the lack of digestion capacity. Primary sludge mass is expected to increase after the South Shore primary treatment project (S01013) is constructed. Primary sludge will also increase if future loadings increase. Gravity thickening Jones Island and South Shore primary sludge, combined with a two-phase anaerobic digestion system, consisting of acid phase digesters followed by the existing conventional mesophilic digesters, will increase the digestion capacity and performance. This project will increase production of renewable energy and reduce the rate of energy used to process biosolids, providing the District the opportunity to meet the 2035 Vision. This project is anticipated to reduce operating costs with the reduction in energy use. The project is include in the county 2024 Capital Improvement Program (CIP)
*Project information has been obtained through a public capital improvement plan (CIP). A CIP is a financial schedule for short- and long-range projects which is updated regularly. Information listed in the CIP often evolves based on funding availability and the project details, including timeline and value, are subject to change. The content management team will continue to pursue additional details as they become available.
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