Exploiting the huge potential for energy savings and resource recovery through wastewater treatment
Approximately 2 percent of the world’s total energy consumption is used for collecting and treating wastewater. Consequently, there is a huge potential for energy savings and energy recovery in wastewater treatment. Considering wastewater as a resource is a relatively new perspective. The organic content in the wastewater can be used as a resource for energy production and phosphorus can be used for fertiliser production with several advantages compared to the application of sewage sludge on agricultural land. Improving a wastewater treatment plant’s energy self-sufficiency and selling surplus energy to the grid can reduce costs for wastewater utilities. Danish wastewater utilities are therefore investing heavily in both energy efficiency and production, and the largest wastewater treatment plants are now net producers of energy.
We invite you to explore solutions related to energy and resource recovery from wastewater in more depth below, find potential partners, catch up on the latest related news and discover real-life case examples of how resource recovery from wastewater can help solve your environmental issues.
Billund BioRefinery (BBR) is a resource recovery plant that integrates urban waste management and wastewater treatment with circular economy. We produce energy, clean water and nutrient rich natural fertilizer, all whilst effectively cleaning all the influent waste streams and protecting the environment.
On a global scale, less than half of all wastewater is collected and less than 20 per cent is treated. This has led to severe environmental degradation of many inland and sea waters around the world. A new edition of a State of Green white paper with brand new cases from around the world provides lessons learned from Danish stakeholders within wastewater treatment, offering inspiration for reaping the benefits of using wastewater as a resource.
This project demonstrates how smart cities are built on smart solutions that promote synergies between district heating, district cooling, waste water, ground water and power while benefiting the local community.
With a new masterplan, the Danish water sector is aiming to become climate neutral by 2030. Exporting those solutions could lead to massive global CO2 reductions and safer water worldwide.
Cheap and sustainable district heating. This is the mission of a landmark partnership, HEATman, between district heating companies, universities, technology companies and software providers that was launched in March 2019.
A new heat pump in Copenhagen will collect energy from both wastewater and seawater and test how the energy can be used in district heating. The capacity of the heat pump corresponds to district heating for 1,100 Copenhagen households.
At Aaby and Marselisborg Wastewater Treatment Plants Aarhus Vand extract phosphorus from the wastewater and sell it as valuable fertiliser under the name PhosphorCare. In 2013, Aarhus Vand opened the first full scale demonstration plant in Denmark at Aaby Wastewater Treatment Plant to test the viability of renewable phosphate production in Denmark. Today the plant […]
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. This has happened through entirely new technologies that exploit the green energy-production potentials in wastewater. The topping-out is a milestone in the technological development of […]
At Marselisborg Wastewater Treatment Plant Aarhus Vand produce 50 percent more energy than is used. By implementing energy efficient solutions and producing biogas from the sludge, the utility is almost able to cover the energy consumption for the whole water cycle from the groundwater extraction, to pump stations, water distribution and wastewater treatment. Water and […]
The safe handling of wastewater is essential to public health. Efficient and innovative design of wastewater systems is also a basis for sustainable development. We help our customers choose the optimal financial and most energy efficient solutions within the areas of: Wastewater management Strategic planning Drainage systems Wastewater treatment Operation and maintenance Ramboll has many years […]
Enhanced demands for food production will increase the global demand for fertilisers such as phosphorus. The global sources of phosphorus are limited, and the increased demand will result in rising market prices and a global fight for control over the limited reserves emphasising the need for methods enabling phosphorus recycling. In such a market situation […]