Rapid Gravity Filtration (RGF) assisted by Rotork at Welsh water treatment plant

Rotork intelligent electric valve actuators were installed to control water flow through a new state - of - the - art extension to a water treatment plant at Cwellyn, Wales.

D ŵ r Cymru Welsh Water is a not - for - profit Water company that serves the majority of Wales and Herefordshire.

The new treatment and filtration system was designed to clarify The water before it enters The existing works to deal with changing raw water The conditions and consistently meet all water quality standards. The Appropriate flow control was required.

Rotork IQT direct drive quarter - turn intelligent electric actuators were installed to operate butterfly valves controlling the flow of water throughout the plant.

The Clarified water (after an initial flocculation process) from the Llyn Cwellyn reservoir is filtered through the first stage RGF before being pumped to the existing treatment works through ultraviolet disinfection.

IQT actuators now control all valve operations o the inlet works, flow control, automatic DE - sludging of the dissolved air flotation (DAF) cells, automatic backwashing of RGF plant and the plant treating the effluent created by the clarification and filtration of the processes.