Veolia Water Technologies has been awarded a contract to supply Actiflo™ Turbo technology for primary clarification at Northumbrian Water’s water treatment works (WTW) at Horsley.
The Actiflo™ plant, consisting of three streams of Actiflo™ Turbo AC8 units, will be an essential part of the works’ upgrade by Northumbrian Water’s partner, the Doosan Interserve Joint Venture.
The Horsley site, which receives raw water from the River Tyne at Ovingham and the Whittle Dene complex of reservoirs, will supply 150 million litres of water a day to 800,000 customers on Tyneside.
Actiflo™ Turbo was selected for its ability to operate at water temperatures down to 1°C, whilst still achieving tight clarified water targets for turbidity, colour and residual aluminium.
The process uses Actisand™ as a seed to achieve ballasted floc, high-rate clarification. The high settling rate means that the plant will have a footprint 5 to 20 times more compact than conventional clarification systems, a major advantage at Horsley where space is restricted.
The process also provides the option of dosing powdered activated carbon to remove organic compounds and THM precursors, which are a seasonal problem at Horsley.
Veolia has thirty years of experience with Actiflo™, Actiflo™ Turbo and Actiflo™ Carb configurations in use in a variety of municipal drinking water, waste water and industrial applications.