Miami-Dade Mayor Daniella Levine Cava on Tuesday marked the completion of new thickening and dewatering facilities at the Central District Wastewater Treatment Plant on Virginia Key, casting the project as a major step forward for the county’s aging sewer system. County officials, plant crews and state regulators turned out for the ceremony, which included walk-throughs of the upgraded centrifuges, covered cake silos and truck load-out gear that are expected to significantly speed up processing and hauling.
People living near Virginia Key have spent years griping about smells and storm vulnerability from the busy plant, and county leaders presented the latest work as a move toward quieter, more resilient operations that should be easier on nearby neighborhoods.
In a county news release covered by Community Newspapers, Levine Cava and Commissioner Raquel Regalado linked the Virginia Key upgrades to the Water and Sewer Department’s wider modernization strategy and the county’s $8.9 billion Capital Improvement Program. County materials describe the Central District work, combined with similar improvements at the South District plant, as the largest completed construction contract in WASD history, and they credit the new equipment with both operational and environmental gains.
WASD Director Jay J. Fink and other officials stressed that the project is part of a broader push to safeguard public health and protect Biscayne Bay.
What Changed At The Plant
The new setup replaces temporary dewatering equipment with a dedicated thickening and dewatering complex that brings gravity belt thickeners under the same roof as high-speed centrifuges designed to run around the clock. “These facilities are capable of processing nearly 530,000 pounds of waste material per day,” Miami-Dade utilities chief Roy Coley said in the county release reported by Community Newspapers.
County documents also say the new gear cuts some material handling steps “from days to seconds,” which is expected to reduce the number of truck trips and overall hauling costs.
How The New Systems Work
The design pairs the upgraded centrifuges with gravity belt thickeners and enclosed cake silos so dewatered biosolids can be stored and loaded out while processing continues, a change that targets a long-running bottleneck at the plant. Industry write-ups of the job highlight the addition of sliding-frame silos and truck-loading stations that are intended to smooth load-out and provide about two days of on-site storage.
Schwing Bioset and members of the project team say the configuration should make day-to-day operations more predictable and cut back on shutdowns tied to maintenance or trucking logistics.
Legal And Regulatory Context
WASD lists the Central District thickening and dewatering work as part of its efforts to comply with both the department’s federal Consent Decree and Florida’s Ocean Outfall Legislation. The upgrades are among the projects the agency tracks with the EPA and the Florida Department of Environmental Protection.
WASD’s transparency report documents construction milestones on the thickening and dewatering facilities and notes the department’s formal updates to regulators on schedule adjustments and force-majeure claims. County legislative files show that the design-build award and contract terms for the Central and South District buildings were approved by the Board of County Commissioners and that those records spell out the contract value and procurement route. Miami-Dade legislative records include the full design-build resolution and scope language.
County officials say the new systems are expected to reduce odors, cut truck traffic and bring down operating expenses as Miami-Dade moves into the next phase of its capital program. Residents and environmental advocates are likely to keep a close eye on commissioning and hauling plans while the county finishes setting up operating procedures and disposal contracts.
For the moment, though, leaders presented the ribbon cutting as a rare feel-good chapter in a long-running campaign to harden and modernize Miami-Dade’s wastewater infrastructure.
