The Nudge Explores Circular Cities Tour 2015 is on a trip through Europe collecting great Circle Economy examples. Our 5 ambassadors report their findings. This is one of the companies they visited.
Written by Nudge Ambassador Rob Jetten
13 May 2015
At the Industrial Symbioses Park in Kalundborg companies use a lot of water for their production process. Companies, like Novozymes and NovoNordisk, use high quality water from a nearby lake. Within Symbiosis companies and the municipality are developing innovative ways to use that water in a smarter way, like using algae in a greenhouse!
The residual streams are normally filtered by bacteria, resulting in CO2 emissions and wasting valuable nutrients. The E4Water Project in Kalundborg has developed an efficient water treatment using microalgae for the cleaning of these industrial residual streams. The microalgae clean the water and produce biomass which can be used for high value byproducts such as an alternative for fish food, proteins and lipids. This technology reduces costs and the use of water and adds more value to the production chain in Kalundborg. Although this technology is not new, it is continuously developed using specific algae types and low energy biomass filters.
E4Water and the Kalundborg Municipality will continue the testing facility to improve the efficiency of the technology. Please watch the video to get a visual impression of this innovative approach!