Solution provider
NISSEN energy supply services and products to ensures economical, beneficial production of sustainable energy - local and global.
Case
Biogas
Combined heat and power production
District energy
+7
Net-Achieving 150% energy self-sufficiency
13. September 2021
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Challenge
At its Marselisborg WWTP, 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 process, as well as optimized the fine bubble aeration system. This has resulted in a reduction in power consumption of approximately 1GWh/year, corresponding to about 25% in total savings.
Solution
During the same time period, energy production has been improved through the implementation of new energy efficient biogas engines (CHP) delivered by NISSEN energy, resulting in an increase in electricity production of approximately 1 GWh/year.
Furthermore, a new heat exchanger has been installed with the aim of selling excess heat to the district heating grid, which represents approx. 2 GWh/year.
Result
Between 2015 and 2019, Marselisborg WWTP had an average total energy production of 9.6 GWh/year and an energy consumption of 6.4 GWh/year, equivalent to a net energy production of 150%.
Most of the installed technologies have a payback time of less than 5 years.
