Royal Derby Hospital

The Client

The new Royal Derby Hospital was opened in April 2010 under a £335m scheme. Construction of the new hospital was carried out in two phases; Phase 1 had to be completed so that several departments could move in to allow the older buildings to be demolished for construction of Phase 2.

The Requirement

The renal wards required 106 points of use, providing 55 dialysis stations. The ring main distribution system in Phase 1 would need to be designed to be easily extended for Phase 2 expansion, which supplied a further 20 beds. These points of use require up to 1750 litres per hour of purified water in accordance with the Renal Association Guidelines.

The Solution

ELGA Process Water's engineers worked closely with the hospital's renal technicians to develop a custom engineered water purification and distribution system, which addressed the complexity of the project.

The system includes:

• Pre-treatment - softening and filtration
• Two reverse osmosis units operating as duty/standby
• Two separate ring mains to ensure half the dialysis stations are always available even when one ring main is under maintenance.
• Two heat sanitisable NephroSAFE ultrafiltration units. Each unit feeds separate ring mains, with excess permeate being recycled.
• Variable speed drive pumps have been employed wherever possible, regulating pump speed and output to match demand thus reducing energy consumption when demand is low.
• Central concentrate supply system to deliver the concentrate to the media panels via ring main distribution system

ELGA Process Water's renal water system at Royal Derby Hospital has consistently delivered purified water which exceeds the water quality goals set at the design stage.