Cases

An important step towards a CO2 neutral water sector is to gain more knowledge about how we measure and reduce greenhouse gases. Supported by the Danish Environmental Protection Agency, the ARES project, aims to uncover new knowledge about the two greenhouse gases methane (CH4) and nitrous oxide (N2O) in sewer systems and at wastewater treatment plants.

Aarhus Vand has established a leak detection field. Water operators can train and become educated in finding leaks in water pipes. The field also works as a test and demonstration of Danish water technology.

Poor wastewater management is causing both environmental damage and health risks for the people of South Africa. To help optimize the wastewater management, Aarhus Vand and Aarhus Municipality have joined forces with City of Tshwane in a Strategic Sector Cooperation for a more water resilient city.

Managing the sewage system in the city of Tema in Ghana previously relied on a plan on physical paper. Through the cooperation with Aarhus Vand a digitalized plan in the shape of an app has been developed enabling quick updates on data.

At traditional wastewater treatment plants, the energy produced is nowhere near enough to cover the operation of the plant. In Aarhus it is. Marselisborg WWTP has an energy self-sufficient far above 100 percent and the plant is in fact a power station, a bio refinery where energy is produced from wastewater.

At Aarhus Vand we are very engaged in business creation and how to improve areas within the field of water supply. Therefore, we created the company DRYP together with MONTEM.

Water utilities in Denmark are struggling with rising problems of hydrogen sulphide in the sewers. To solve these problems, Aarhus Vand has partnered up with Envidan and made a sustainable filter that uses mussel shells to break down the hydrogen sulphide without chemicals.

The company Zediment delivers drone-based scannings of the capacity of reservoirs at wastewater treatment plants and in stormwater basins. This solution is the first of its kind and can save the water utility huge operational costs.

Total energy renovation of the treatment plant at Egaa, just outside Aarhus, means that Aarhus Vand is setting new standards for developing treatment plants from energy guzzlers into energy producers.

We have reopened the cased Aarhus River so that people are once again able to enjoy the open water areas in the centre of Aarhus. The opening of the river is also an important part of Aarhus Vand’s project about flood prevention and preventing wastewater from overflowing into lakes, streams and bay.

At Aaby and Marselisborg Wastewater Treatment Plants we have extracted phosphorus from the wastewater. Over a decade this has been sold as a valuable fertiliser under the name PhosphorCare.