Hydro GritCleanse Protects a SC WWTP During Heavy Rain Events.
Like many municipalities, East Richland County’s collection system is aging with various levels of inflow and infiltration issues. This allows the region’s sandy soil to deposit throughout the interceptor lines, with hard rain events rapidly introducing all the deposited grit, sand, and debris into the treatment plant. While the PSD is not a combined storm / sanitary sewer system, these heavy rain events have always had the potential to impact the Gills Creek treatment plant profoundly.
Gills Creek had aging aerated grit basins with a chain and bucket removal system that had never provided much protection, in addition to having become a maintenance nightmare. As a result, the plant had struggled with grit for years. East Richland PSD wanted a solution that could reduce their maintenance burden and provide surge capacity to protect the plant during storm conditions. In 2016, the plant began the process of selecting a grit removal system that could solve their grit problem.
