Reliable operating conditions drive success in industrial symbiosis

Factories and industrial parks across Europe are developing industrial symbiosis, a system where one facility uses the waste products of another as a resource.

This process involves sharing heat, water, and residual materials to reduce overall resource demand. While the concept of matching waste to a new use is simple, researchers and project managers emphasize that successful exchanges require consistent quality, quantity, and reliable communication between partners.

The Kalundborg Symbiosis network in Denmark reported meeting its goal of adding ten resource streams over a decade. These streams include heat recovery from industrial wastewater, condensate for a refinery, and shared water management data. Experts note that these connections depend on specific local conditions, such as the distance between partners and their ability to adapt production schedules.

For example, a study by Eindhoven University of Technology and TNO showed that industrial heat pumps lose significant efficiency when source water temperatures drop below 75°C, meaning a heat source is only useful if it meets the specific requirements of the receiving customer. Different projects demonstrate varying levels of maturity and results. The CORALIS project reported a 33% energy reduction for a 100,000-square-metre greenhouse in Sweden using industrial waste heat, but other Italian technologies remain in the laboratory phase.

Because these results vary, researchers suggest that new sites must evaluate their own local electricity supplies and transport costs rather than assuming identical savings. Similarly, the ULTIMATE project showed that water exchanges require coordinated treatment and monitoring to protect receiving processes from changes in incoming wastewater quality. To make these systems durable, researchers and organizations like INCUBIS and RISERS are focusing on trust, data sharing, and standardized specifications.

These efforts help factories identify credible partners and agree on who manages risks when a supply fluctuates. By establishing clear contracts and shared technical data, industries can create a resilient circular economy where partners can maintain exchanges even as individual factories change their production methods or efficiency levels.