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UTILITY COMPANY

AARHUS WATER SOLUTIONS PLANT
MARSELISBORG WWTP

Rewarded Environmental Actions


Wastewater
to power
Surplus energy
for the grid


Biosolids
to energy
Energy saving
technology
View all Rewarded Actions below

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Marselisborg WWTP is one of the world's most power producing plants from wastewater

Arhus Vand A/S
Gunnar Clausens Vej 34
8260 Viby J
Denmark

Phone +45 89 47 10 00

Mission
Our aim is to offer and develop resource efficient services throughout the entire water cycle. We aim to create a climate-adapted, healthy environment together with growth and exports for the benefit of customers and stakeholders.

Vision
We only use the energy we produce – energy neutral
We supply energy to others – net energy producing
We have a balanced CO2 account (carbon footprint).

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Marselisborg is a popular energy self-suffcient resource plant

A LARGE NUMBER OF PEOPLE VISIT THE PLANT IN AARHUS

Delegations from many countries visit the Marselisborg wastewater treatment plant in Aarhus. Here a delegation from American water agencies is given a tour by Flemming Husum.

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WASTEWATER TO POWER. Super green wastewater treatment. In 2017, the Marselisborg Wastewater Treatment Plant produced more energy than it needed to run its own business. The Super Geen E Score in 2017 was 160 including heat recovery. The plant produces 40% more electricity than it needs to run the plant.


SURPLUS ENERGY FOR THE GRID. Energy sold to the grid. The Marselisborg Wastewater Treatment Plant distributes energy to the City of Aarhus through the electricity grid. Energy from heat recovery is distributed through the district heating system in Aarhus. The plant produces 2.5 GW of heat for the district heating system.


BIOENERGY PRODUCTION. Energy produced from biogas. The independent energy-based Marselisborg Wastewater Treatment Plant functions solely on energy produced from biogas.


POWER PLANT PLAN. Reduce greenhouse gasses. The Marselisborg Wastewater Treatment Plant strives to be even more energy efficient, with the goal of producing twice as much energy as they use. This would raise the Super Green E Score to 200!


BIOSOLIDS TO BIOGAS. Energy recovery technology. The technology upgrade that the Marselisborg Wastewater Treatment Plant made from 2005 to 2015 included the implementation of new energy efficient biogas engines (CHP,) resulting in an increase in electricity production of about 1 GWh per year. The biogas engines are provided by NISSEN Energy Technology.


ADVANCED BIOLOGICAL PROCESS. Improved wastewater treatment efficiency. The Marselisborg Wastewater Treatment Plant uses a sludge liquor treatment based on the anammox process.


PHOSPHORUS RECYCLING. Nutrient recovery. The Marselisborg Wastewater Treatment Plant recovers phosphorus. The nutrient is captured at a separate facility at the plant and packed for further recycling.


ECO-CITY PARTICIPATION. Achieve city and county goal. The Marselisborg Wastewater Treatment Plant is a utility service that helps the city be eco-friendly by recovering biogas resources and providing electricity for the city. Aarhus's goal is to be a clean energy city by 2035. Aarhus is part of the region/county of Midtjylland in Denmark.


CITIZEN'S WATER. Environmentally friendly water. The Marselisborg Wastewater Treatment Plant is a utility service under Aarhus Water that enables consumers to live a greener lifestyle. Aarhus is the second largest city in Denmark. Marselisborg WWTP treats most of the water in Aarhus.


ENERGY SAVING TECHNOLOGY. Efficiency optimization. The Marselisborg Wastewater Treatment Plant made a technology upgrade by installing a new abs turbo compressor, which increases the energy efficiency of the aeration process. The plant also installed new biogas engines provided by Nissen.


ENERGY SAVING DRIVES. Advanced low voltage SCADA control system. The Marselisborg Wastewater Treatment Plant made a technology upgrade by installing 290 VLT Aqua Drives (modular AC drives) in the water supply and wastewater handling system. 140 VLT drives are installed on all rotating elements in the wastewater facility. Additional 150 VLT drives control the sewage channelization and distribution system. The drives installed are made by Danfoss.


BIG WATER OPTIMIZATION. Upgrade investment. The Marselisborg Wastewater Treatment Plant serves 350,000 people. After undergoing approximately 3 million dollars in optimization and renovation from 2010 to 2016, Aarhus’s Marselisborg Wastewater Treatment Plant is now capable of creating heat and electricity from biogas. Most of the installed technologies have a payback time of less than 5 years.

 

PLANT DEVELOPMENT. Wastewater treatment plant masterplan. The Marselisborg Wastewater Treatment Plant is scheduled to be transformed by building the Marselisborg ReWater resource plant closer to the Eastern Harbor in Aarhus. The new treatment plant and the Egaa Treatment Plant plants that together will service approximately 480,000 people in the Aarhus Municipality by 2026. This transition from originally 17 plants to two plants will increase the efficiency of wastewater treatment.

 

UN’s 17 GLOBAL GOALS. Sustainable development plan. Marselisborg Wastewater Treatment Plant administrered under Aarhus Water maintains a strategic focus on the environment and the climate. Aarhus Water integrates the global targets in their Strategy 2020 and in the projects where they are relevant.

 

CSR CERTIFIED COMPANY. Social accountability. Marselisborg WWTP under Aarhus Water is a CSR certified company. Aarhus Water has full control of topics within social accountability: Consumer relations, the environment, the climate and working conditions, business ethics, human rights and contribution to the development of local society.

 

 

 
 
posted by Expert Panel California Seats

Energy Scores

 
160% renewable energy. 40% more electricity is produced than the plant needs.
Bioenergy to electricity and heat

 

 
Grid Value: 60% more energy is produced than the plant needs including heat recovery.
Electricity and hot water for the grid

 

 
The Goal is to produce twice as much energy than the plant needs.
Bioenergy to electricity. Heat recovery

Aarhus Vand covers a service area of 11,600 ha:
350,000 people are connected
Industry 36,000 PE

We deliver 15 mill. m3 drinking water per year:
9 waterworks
100 wells

We transport and treat 30 mill. m³ wastewater per year:
4 wastewater treatment plants
103 pumping stations
2.200 km sewage pipes
Storm water detention basins approx. 60,000 m3.

Business type Water treatment

Bio energy, Energy Efficiency
Water industry
Water utility