ACTIVATED SLUDGE TREATMENT PLANT

Fredville Wastewater Treatment Works treatment plant is a new plant designed to treat the wastewater from a community outside Pietermaritzburg in Kwa Zulu Natal. The plant is an activated sludge plant built initially to treat 2000m³/day of mainly domestic wastewater. The plant was designed such that another biological reactor and clarifier can be added at a later stage to enable the plant to handle 4000m³/day. This plant is designed as an unmanned plant with telemetry hook up to the owners some fifty kilometers away.

PCI AFRICA provided all the mechanical and electrical equipment with the exception of the inlet mechanical screen and screenings compactor these were specified by the client including, various proprietary equipment such as chlorinators and pumps. Paterson Candy International designed in-house and built the following;

• One two point five meter diameter vortex type grit trap
• One Archimedean screw type grit classifier
• Three thirty-kilowatt vertical spindle surface aerators
• One two meter long tilting weir
• One twenty-meter diameter echelon scraper final clarifier with scum collection and removal
• The RAS and WAS pump station
• Sludge conditioning and gravity thickener mechanical components.