Pinellas County


Pinellas County, FL


Wastewater Engineering

Originally constructed in 1962, South Cross Bayou Water Reclamation Facility (SCBWRF) is Pinellas County’s largest wastewater treatment facility. The facility distributes an average of 33 million gallons per day (MGD) of reclaimed wastewater to residential and commercial customers while also processing the County’s biosolids. By treating water and recycling biosolids, we can complete a natural cycle in the environment rather than taking up space in a landfill. Gresham Smith was selected by Pinellas County to evaluate the facility’s biosolids equipment and processes, and to design a new state-of-the-art biosolids dewatering system.

million gallons per day
high-speed dewatering centrifuges
Dewatering centrifuge at South Cross Bayou WRF.

More Efficient Dewatering

Integrating the latest technology into SCBWRF will create a value-added resource recovery process for the county, offsetting energy usage and stretching ratepayer dollars. Gresham Smith is providing pre- and final design as well as construction services for improvements to three high-speed dewatering centrifuges, dewatered conveyance equipment, polymer storage and feed systems and electrical and instrumentation equipment. The dewatering equipment must consistently meet the requirements of the sludge drying facility for percent dried solids. We are conducting thorough evaluation of dewatering and polymer equipment so that the highest quality equipment is specified and installed.

Dewatering centrifuge at South Cross Bayou WRF.

Sustainably Efficient

As part of the project, the County asked Gresham Smith for a review of the facility’s overall solids processes. We are reviewing energy and chemical requirements and usage in order to verify energy efficiency goals are met and as well as identifying areas to implement future sustainable design features that align with Envision™.