The project consisted of up-rating of the existing 35.5 Ml/day
Little Eaton Water Works by the addition of GAC and chemical
dosing to supplement the original works which included coagulation,
sedimentation, rapid gravity filtration and disinfection. Whitewater
was retained by the Contractor to provide process deign services.
Process design including preparation of Process Flow Diagram
(PFD), Piping and Instrumentation Diagrams (P&ID), control
philosophy, detailed process design and equipment specifications
for major items of plant including GAC contactors and chemical
A new activated carbon adsorption plant was installed comprising
twelve 3.8m diameter vertical pressure contactors for pesticide
A new chemical storage and dosing facility was provided incorporating
equipment for pH control by sodium hydroxide dosing, disinfection
by superchlorination and dechlorination and plumbosolvency control
by ortho-phosphoric acid dosing.
Backwash water recovery was included using settling tanks with
supernatant return to the original works.
A new SCADA system and PLC based distributed control system
was provided with links to the existing central telemetry system.