The Propelair project comprises the “refinement, miniaturisation and demonstration of an ultra-low flush toilet capable of saving 2.8bn litres of clean, potable water being unnecessarily wasted in Europe every day”. Phoenix Product Development Ltd is applying 20 years’ experience to a project that will develop an innovative toilet that will reduce such water wastage.
Toilets account for 90% of clean water use in non-residential buildings and 35% in domestic ones, with Europeans flushing away 102bn litres of clean drinking water every day.
The European Environment Agency reports that in Europe 70m people are currently living in water stressed conditions, and the UN has predicted that by 2025 people living in countries or regions with absolute water scarcity will increase to 1.8bn people, while global water demand is projected to increase by 55% between 2015 and 2050.
Propelair’s solution addresses the problem of water wastage by decoupling flush performance from the volume of water used through a novel, patented “displaced air” technology. The Propelair project will refine, demonstrate and scale-up for market readiness an ultra-low water toilet with a flush volume of only 1.5 litres, reducing toilet water usage by 75% compared to a 6-litre standard dual flush toilet, or 84% compared to a 9-litre unit, and reducing total water process energy and carbon emissions by 70%. Installed in a commercial washroom, a single Propelair toilet will typically save 180,000 litres p.a. delivering an average saving of €344 per year with a typical return on investment in under 2 years.