Location: Steven M. Clouse San Antonio Water System (SAWS) | San Antonio, Texas
Plant Size: 80 MGD
Installation: 2019 (2) THK600 Sludge Thickeners
- Feed @ 1.0-1.3% TS
- 800 gpm average
- 95% capture
- 2.0-2.7 lbs/ton polymer, active
- 0.09-0.11 kW/gpm
- 6.5% TS TWAS
PROBLEM
SAWS had four aging GBTs that could not handle the increasing flows. The sludge feed was a blend of WAS and primary sludge from two plants — SM Clouse and Leon Creek. The THKs ability to reduce polymer consumption by 50% was a key factor for the equipment choice.
RESULTS
- Reduced polymer usage depending on seasonal usage, a savings of $100,000 to $400,000/yr
- Eliminated the need for continuous wash water by replacing the GBTs with THKs
- Enclosed THK system increased hygienic operation and safety for operators
