The Greenville Water System in Greenville, S.C., draws water from three sources—Table Rock Reservoir on the South Saluda River, Poinsett Reservoir on the North Saluda River and Lake Keowee. Table Rock and Poinsett Reservoirs are both located in the foothills of the Blue Ridge Mountains in northern Greenville County. The source waters from the mountain reservoirs were once so clear that they were unfiltered and only treated with chlorine for over 70 years.
Dissolved Air Flotation (DAF) has been characterized as a clarification process that is limited to low-turbidity algae-laden waters. Pilot testing and actual plant operations at the 63rd Street Water Treatment Plant in Boulder, Colo., has proven that this is not the case.
The Korean Water Resources Corp. (K-Water) operates the Songjeon Water Treatment Plant in Wonju, South Korea. The plant obtains raw water from the Hoeng-Seong (HS) Lake. The lake water has algae blooms, high turbidity when rainfall events occur and the need for powdered activated carbon (PAC) to enhance organic removals and prevent chlorinated byproducts such as total trihalomethanes (TTHM), dichloroacetic and trichloroacetic acid (HAA2) and chloral hydrate (CH).
Hong Kong’s first tertiary WWTP protects a nature preserve at a tourist landmark Background
The Ngong Ping Wastewater Treatment Plant (WWTP) treats and reuses the wastewater generated in the Ngong Ping tourist area in Hong Kong, China, situated in the watershed for the Shek Pik Reservoir. This area is considered environmentally sensitive due to the water supply catchment and the country parks surrounding the Lantau plateau.