As of April 24, 2024, an engineer has been selected and this project is in the design phase. It is anticipated a general contractor will be awarded by end of 2024, with construction starting mid-2025. Design firm information has not been determined. The project is include in the city's 2024-2028 Capital Improvement Program (CIP). The waste sludge at Sawgrass WWTP is thickened at the Dissolved Air Flotation (DAF) process to approximately 2 - 3 % solids and then transferred to the sludge holding tanks prior to high solids centrifuge dewatering. The centrifuge process requires the sludge to be at least 2% solids but not higher than 5% solids for proper functioning of centrifuges. The DAF introduces pressurized air and a polymer, causing the solids to rise and float to the surface. Solids are scraped off the top and pumped into holding tanks and wastewater is recirculated back to treatment. The DAF system was built in two phases: The first phase was built in 1987 with the Train A construction and the second phase was built in the 1996 plant expansion project. The older side of the DAF process exhibits heavy wear and corrosion of many components, so the equipment has exceeded the expected service life and must be replaced. The newer side of the DAF unit is also showing signs of heavy wear and is in need of new system scraper components and a drive unit. Additionally, the inside of the DAF unit tank will require a structural liner to strengthen and seal existing cracks in the concrete. As of November 21, 2022, this project is currently in the FY 2023-2027 CIP . Funding for this project is allotted in the city's capital improvement plan for construction Fy 2024. A firm timeline has not been established; however, construction is scheduled for Fiscal Year 2024. *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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