Once completed, the Circular House will be the world’s first social housing project constructed according to circular principles. Used car tyres for the flooring’s underlay.Eelgrass and granules, which will provide insulation in the buildings.Cork and old newspapers, that are used for the façade of the buildings.The Circle house project, led by 3XN Architects, is devised to be a blueprint for circular construction in Denmark, with 90% of its building material able to be demounted and reused or resold without loss of value.Īdditionally, besides using concrete and cement as the main building material, the building project is set to minimize its CO 2 footprint by using alternative materials, such as: One way to do so is to recycle or reuse building materials, thereby maximising their lifespan and reusability.Ī prime example of this is The Circle House, which is expected to be completed north of the Danish city of Aarhus in 2023. With the building industry responsible for a sizeable amount of global CO 2 emissions (approximately 39% in total), the need for a circular approach to construction and design is required. Read more: The Danish deposit & return system for recycling drink cans and bottles The Danish deposit system can be seen as an inspiration source to increase recycling rates and support the circular economy, especially in order to reach the EU goal of 90 % collection goal of plastic bottles by 2029. Cooperation between producers, consumers and the Danish Return System is effective, resulting in a high return rate.Recycling cans means less bauxite is extracted to produce aluminium.Producing cans from recycled materials uses 95% less energy than virgin materials.The deposit and return system creates several circular economy benefits: A common circular return system, making it possible to turn in your used beverage containers in supermarkets and kiosks across Denmark while receiving a deposit in return as cash. This was largely due to Dansk Retursystem: The Danish deposit and return system for recycling drink cans and bottles. In 2021, Denmark reached a 93% return percentage of disposable packaging, recycling 1.9 billion cans and bottles for reuse. Read more: Industrial symbiosis: A model for growth in the circular economy Each symbiosis created reduced CO 2 emissions by 800 tonnes – corresponding to CO 2 emissions of 100 Danish residents.
Materials consumption was reduced by approximately 2.600 tonnes of FE-equivalents.Energy consumption was reduced by 11.000 gigajoules.Additionally, extra income was generated through product innovation and new products, as well as creating new markets and/or customer groups.Īdditionally, several positive environmental results have been achieved: For example, an exchange of surplus resources has resulted in direct benefits, such as reduced waste management and materials procurement costs. The companies involved in the symbiosis have experienced a range of benefits.
The project was designed to improve the competitiveness of SMEs in Aalborg East by developing green business models that would improve energy efficiency and resource efficiency through a facilitated industrial symbiosis. Through the “Sustainable Synergies” project facilitated by Port of Aalborg, Aalborg University and energy cluster House of Energy, 25 Danish companies have exchanged residual and surplus products such as water, energy, or materials.
Industrial symbiosis is a method for using scarce materials effectively and sustainably, representing a way for companies to lower environmental impact and production expenses.
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