South Staffordshire Water PLC choose Hiller Centrifuges at Hampton Loade WTW

02 October 2009

South Staffordshire Water serves a population of some 1.2 million throughout large parts of the Black Country and areas such as Tamworth, Burton, Lichfield, Sutton Coldfield and Cannock.The Company supplies 330 million litres of clean water every day across a network of pipes that total some 6,000 km in length.

When it came to a major upgrade of their sludge processing centre at Hampton Loade a full review of the centrifuge market was carried out as South Staffordshire Water PLC, having recently been praised by the industry regulator Ofwat for achieving top efficiency (Band “A”).
Naston and South Staffs Water worked closely together and after a series of presentations, tender submissions and reference plant visits, they chose to install two off Hiller DP51-422 centrifuges with energy efficient regenerative backdrive systems.

The installation contract included for the supply of a highly integrated and totally automatic HMI / SCADA based control panel, feed pumps, polymer make up and dosing system, pipework with trace heating, electrical wiring, support stand and dual discharge inclined shaftless screw conveyor systems for trailer loading.

The centrifuges were supplied installed and commissioned, on time and to budget, and currently dewater 30 m3/hr of sludge at 2 – 3 % dry solids, producing a cake at > 25 % dry solids.

The system also provides for considerable savings in polymer use and lower electrical  running costs (in particular the scroll drive motor whcih acts as a generator) due to the energy efficient nature of the Hiller regenerative backdrive arrangement.