AAQUA - Blue Heat Recovery Operation Unit

An Example Demonstrates The Effectiveness Of The Concept:

• The waste water treatment plant treats 500 m³ of wastewater a day
• Purified water is released at an average temperature of 24 ° C
• The calories in the waste water are very efficiently recovered, using heat exchangers and a heat pump. Every day 200 m³ day of process water is preheated from 12 ° C to 40 C!
• On an annual basis (265 days of production) you save 1.725 MWh of energy.
• With 1 kWh of electricity we produce up to 11 kWh of heat: COP (Coëfficient of performance) = 11
• Compared to a conventional gas boiler this represents a saving of + / - 50.000 € / year
• In addition Blue Hero saves normally 4 times more energy than the waste water treatment plant uses for its operation.
• A reduction of more than 210 tonnes of CO2 a year is achieved (=73% reduction). This corresponds to getting 100 cars out of service (140 g CO2/km at 15.000 km/year).
• The water discharges are cooled in summer and your waste water meets the temperature standards for discharges to surface water.
• Finally, the pay-back of a complete Blue Hero is mostly less than 3 years. This is very short for an energy saving investment.
• The premiums which are available are (cumulated) :
• EANDIS (or other network administrator) : € 0.025 to € 0.035 per primary kWh/year saved but limited to a plafond of € 15 000.  Aaqua takes care of the study !
• Increased deduction on investments : 13.5 % at a tax rate of 33.99 % = 4.58865 % of the investment
• Ecology premium