Industrial Symbiosis and Wastewater: Exploring the Success of Kalundborg Eco-Industrial Park

Robert C. Brears
Mark and Focus
Published in
4 min readJul 26, 2023

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Industrial symbiosis is transforming the business world’s approach to sustainability and economic growth, with the Kalundborg Eco-Industrial Park serving as a prime example of its success.

By Robert C. Brears

Industrial symbiosis is a system in which different industrial entities combine to exchange resources, such as energy, water, or materials, for mutual benefit. This collaboration can improve environmental and economic outcomes by reducing waste and minimizing the need for new raw materials. Industrial symbiosis aims to create a circular economy in which resources are continually reused rather than wasted or discarded.

Kalundborg Eco-Industrial Park: A leading example

One of the most notable examples of industrial symbiosis is the Kalundborg Eco-Industrial Park in Denmark. This park is home to several industrial facilities, including a power plant, an oil refinery, a pharmaceutical company, and a fertilizer plant. These businesses have developed a network of interconnected systems that allow them to exchange resources and reduce their environmental impact.

For example, the power plant at Kalundborg produces steam that is used to heat buildings at a nearby pharmaceutical company. The excess heat from the power plant is also used to dry sludge from the wastewater treatment plant, which is then used as fertilizer at the nearby agricultural fields. In addition, the wastewater from the pharmaceutical company is treated and used as process water at the nearby oil refinery.

The success of the Kalundborg Eco-Industrial Park has been attributed to the proximity of the different industrial facilities, which allows for easy transportation and the exchange of resources. Additionally, the companies involved have a shared commitment to sustainability and environmental responsibility.

Benefits of Industrial Symbiosis

Industrial symbiosis has numerous benefits for businesses, communities, and the environment. One of the most significant advantages is the reduction of waste and pollution. By reusing resources, businesses can minimize their environmental impact and decrease their dependence on raw materials.

Another benefit of industrial symbiosis is the potential for cost savings. By sharing resources, businesses can reduce expenses and improve their bottom line. In addition, industrial symbiosis can create new revenue streams by turning waste products into valuable resources.

Industrial symbiosis can also lead to job creation and economic growth. In addition, by working together, businesses can create new products and services, leading to the development of new industries and the growth of existing ones.

Challenges to Implementation

Despite the numerous benefits of industrial symbiosis, there are also challenges to implementing these systems. One of the primary challenges is collaboration and coordination among businesses. Industrial symbiosis requires a high level of trust and communication between the different entities involved and a willingness to share information and resources.

Another challenge is the need for regulatory and policy support. Governments can play an essential role in creating a supportive policy environment for industrial symbioses, such as providing financial incentives or streamlining regulatory processes.

Promoting Sustainability and Economic Growth

Overall, an industrial symbiosis is a powerful tool for promoting sustainability and economic growth. By working together to share resources and minimize waste, businesses can reduce their environmental impact, create new revenue streams, and generate economic opportunities for the surrounding community. The success of the Kalundborg Eco-Industrial Park serves as a model for how industrial symbiosis can be implemented and the benefits it can bring to businesses and the environment.

The Take-Out

By fostering collaboration and promoting circular economy practices, industrial symbiosis has the potential to create a more sustainable future for businesses and the planet alike.

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Robert C. Brears
Mark and Focus

Robert is the author of Financing Water Security and Green Growth (Oxford University Press) and Founder of Our Future Water and Mark and Focus