The plant produces enough energy to cover 94 percent of all the energy used for the whole water cycle in the catchment area. The utility has implemented energy-saving technologies such as an advanced SCADA control system, a new turbo compressor, sludge liquor treatment based on the anammox proces and optimised the fine bubble aeration system.
- A reduction in power consumption of approximately 1GWh/year which corresponds to about 25% in total savings.
- During the same time period, the energy production has been improved through implementation of new energy efficient biogas engines (CHP), resulting in an increase in electricity production of approximately 1 GWh/year. And an energy consumption of 6.4 MWh/year, equivalent to a net energy production of 150%. Most of the installed technologies have a payback time of less than 5 years.
Furthermore, a new heat exchanger has been installed with the aim of selling surplus heat to the district heating grid, which represents approx. 2 GWh/year. Between 2015 and 2019, Marselisborg WWTP had an average total energy production of 9.6 MWh/year and an energy
A 3VAND partner
We are an active partner in 3VAND – a strategic collaborative partnership consisting of the leading water utilities in Denmark: HOFOR, BIOFOS, Aarhus Vand and VCS Denmark.