Lake City, South Carolina - The City of Lake City, South Carolina, selected Constantine Engineering to upgrade their Lake Swamp Wastewater Treatment Plant (LSWWTP). The LSWWTP, originally constructed in 1981, is currently permitted for a design capacity of 5.2 million gallons per day (MGD). Typical average daily flows range from 2.5 to 3.0 MGD with peak wet weather flows sometimes exceeding 10.0 MGD. Work has begun to upgrade the facility to meet more stringent discharge standards and to optimize unit processes and equipment. Constantine has proposed a phased implementation schedule that will allow the highest priority modifications to be addressed first.
Briefly, Phase 1 will implement improvements and upgrades to the liquid and solids train processes, expanding the capacity of the liquid train biological treatment processes (aeration basins and blowers) to install a new anoxic selector process, the solids treatment processes (digestion and dewatering), and related miscellaneous improvements. Phase 2 will involve construction of a new septage receiving system. Phase 3 will include preliminary treatment improvements and upgrades, including a new state-of-the-art headworks facility with mechanical fine screens, vortex grit removal, and screenings dewatering. During Phase 4 of the project, the influent pump station will be upgraded, while, in Phase 5, the storage pond bypass structure will be upgraded and will incorporate an equalization pump station. Finally, during Phase 6, upgrades will be made to the City's Supervisory Control and Data Acquisition (SCADA) system.
Managed through Constantine's Columbia, South Carolina office, improvements and modifications will be funded through the United States Department of Agriculture Rural Development Administration Water and Waste Disposal Loan and Grant Program. Constantine will provide design phase engineering services, permitting services, and services during construction.