Kaumera Nereda: water technology for a circular economy

Kaumera Nereda® Gum is a resource extracted from the waste water treatment process. It can both retain and repel water, and can be used for a variety of purposes.

Kaumera is the result of a collaboration between Royal HaskoningDHV, Delft University of Technology, STOWA (Dutch Foundation for Applied Research in Water Management), the Vallei and Veluwe Water Authority, the Rijn and IJssel Water Authority, ChainCraft, and the Energy and Raw Materials Factory (EFGF). Each stakeholder contributed part of the knowledge and resources necessary to develop the final product.

From fertiliser to binding agent

Because of its properties, Kaumera can be used in many different ways. It provides an excellent coating material for slow-release fertilisers and paper, but it can also be used as a binding agent for powder-like materials, as a curing agent for concrete and as a flame retardant. In principle, the product can be made at all Nereda® waste water purification plants. Currently, one plant in the Netherlands is producing Kaumera, and a second one will be opened in spring 2020.

Contributing to the circular economy

Kaumera shows how water technology can help to achieve a circular economy. The product is extracted from waste water. This promotes waste reuse and minimises waste. Because it can be used as an alternative for oil-based materials, Kaumera reduces the amount of fossil resources required. Shortly after the international launch in October 2019, the product was awarded the Aquatech Innovation Award and the Dutch Water Innovation Award, recognising the innovative value of this product.

Contact information

Rijn and IJssel Water Authority, +31 (0)314 369 369, info@wrij.nl

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