Reverse Osmosis Waste Water Recycling - East and North Hertfordshire NHS Trust

Key learning point: Recycling waste concentrate water from hospital’s renal unit offers significant water, carbon, and financial savings

Setting/Patient Group: Renal Unit, Lister Hospital

Issue to be addressed: Water wastage

Intervention: Waste concentrate water from the reverse osmosis unit is now recycled into the main soft water storage break tanks that serve the main hospital sites hot water requirements

Outcome:

Social:

-        Not documented

Environmental:

-        3,145,000 litres of water saved annually

-        3311kgCO₂e saved annually

Economic:

-        £6,300 saved annually from water saving

-        Installation cost to recycle the RO water was approximately £6,000, so estimated pay back for this scheme was less than 12 months.