Project: Manganese removal from groundwater
Severn Trent Water Ltd.
When: July ’07 to Feb ‘08
A local WTW currently uses a groundwater source known to have an elevated concentration
of manganese and is currently treated by chlorination followed by sand filtration and bisulphite dosing.
Laboratory and site based pilot scale investigations were conducted
by WatStech Ltd. to determine the maximum manganese removal possible with the current operational setup and the minimum chlorine
Initial laboratory tests
of site media indicated extensive manganese deposits. Following media replacement on site and further pilot scale trials the capacity of existing filters for manganese removal and the optimum dose of chlorine
required were determined.