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AARHUS REWATER - THE WORLD'S MOST SUSTAINABLE AND INNOVATIVE WASTEWATER TREATMENT PLANT

In addition to treating wastewater, the plant will produce surplus energy and utilize the resources in wastewater to an extent not seen elsewhere, which will be of great benefit to the environment, citizens, and society.

 

In 2028, Aarhus ReWater, the new resource and treatment plant, will replace Marselisborg, Åby and Viby Wastewater Treatment Plant. In a few years, the three wastewater treatment plants will not have enough capacity to treat the wastewater from an increasing number of citizens in the City of Aarhus, Denmark. 

In connection with the new, large facility, an island must be created from the harbor in the area around the current Marselisborg Wastewater Treatment Plant. This means that there currently is ten meters of water where the facility is to be built.

The plant – Aarhus ReWater – will be the world’s most sustainable and innovative wastewater treatment plant, which in addition to treating wastewater, will produce surplus energy and utilize the resources in wastewater to an extent not seen elsewhere, and which will be of great benefit to the environment, citizens, and society. These resources include nutrients, proteins, food, chemicals, and basic substances for the health industry.

Flagship for the circular economy

The project will be a flagship for the circular economy at Aarhus Vand and will pave the way for the water company to be energy and CO2 neutral by 2030. Together with the sub-consultants, KWR Water Research Institute, DHI and Royal HaskoningDHV Nederland B.V., Envidan is in the process of realizing this great ambition.

Morten Fjerbæk, CEO of Envidan until 1st of October 2022, is delighted with this and says: "We are, of 

 

course, extremely proud that we, together with our Dutch sub-consultants, have been appointed as Aarhus Vand's process consultant on this project. Our employees are driven by professionalism and personal development, and theknowledge that, for many years to come, we will be a central part of the largest and most innovative wastewater treatment project in recent Danish history, Envidan has a unique opportunity to offer employees just that."

Envidan is responsible for the design of the entire process plant

The job as process consultant was tendered in an innovation partnership, and the choice was made on the basis of a prior six-month innovation program with Aarhus Vand. Director of Business Development at Aarhus Vand, Claus Møller Pedersen, says of the project: "As process consultant, Envidan will assist Aarhus Vand with the design of the overall process plant for Aarhus ReWater - from the initial choices of technologies and resources to utilization and the final design. It's very complex, but Envidan are among those at the forefront in the field of resource utilization at wastewater treatment plants, and together with the two sub-consultants, we now have a very strong team that I'm confident can solve the task."

After a tender process, Aarhus ReWater has chosen Henning Larsen for architectural consultancy and Aarsleff is the turnkey contractor.

The construction of Aarhus ReWater is scheduled to run until mid-2028, when the plant is expected to be operational. The plant is then expected to be continuously expanded until 2050, when capacity will reach the equivalent of 600,000 persons discharging wastewater.

Claus  Kobberø

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Claus Kobberø

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