Water Treatment Plant in 50 Per Cent Electricity Surplus

Egaa WWTP is the first in the world to produce 50 percent more electricity than it uses.

A large number of water-treatment plants (WTP), both in Denmark and abroad, must be transformed from energy guzzlers to energy producers. This will be through entirely new technologies that exploit the green energy-production potentials in wastewater.

Total energy renovation of the treatment plant at Egaa, just outside Aarhus, means that Aarhus Vand is setting new standards for developing treatment plants into energy producers. The topping-out is a milestone in the technological development of treatment plants towards becoming energy producers. Not only in Denmark, but throughout the world. When the treatment plant at Egaa is in full operation in autumn 2016, it will be producing 50 percent more electricity than it consumes. This has never been seen before.

This topping-out marks the conclusion of a long and exciting process of innovation, in which there were originally 63 ideas from Denmark and abroad to establish ‘the energy-producing treatment plant of the future’. The new plant at Egaa will be completed on the basis of this innovative approach to developing new water technology and it’s the very nice result of unique and fruitful collaboration between two companies, Envidan and Per Aarsleff, and Aarhus Vand.

Aarhus Vand’s strategy is to be energy-neutral and CO2-neutral by 2030 at the latest. By no later than 2016, all of the company’s water-treatment plants must be supplying green energy to the electricity and heat grids, and the plant at Egaa will be supplying green energy at competitive prices. The plant will act as a demonstration plant to showcase the newest technological advances to Danish and foreign experts and decision makers with an interest in energy optimisation and energy production.

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