The following companies participated in the Sustainable Business Battle 2018:


Dunea is a drinking water company serving 1.3 million consumers in the western area of Zuid-Holland. Also, they are responsible for nature conservation in the dunes between Monster and Katwijk. The source of drinking water is river water. Preventing pollution is the most effective source protection method. Several hospitals take measures to purify their wastewater but most of their patients have outpatient procedures. This means that these patients pee high concentrations of drugs at home. Some even flush their left-over medicine through the toilet. Dunea’s value chain partners, the water boards, have the big task to install additional purification technologies as drug consumption is increasing while these drugs are very hard to take out of the water. Will you help them with innovative solutions to deal with this challenge?



Bolidt produces and places epoxy floors in buildings and ships. This family company has its own lab in which they develop, test and produce innovative flooring concepts. They are very ambitious when it comes to sustainability identified several ideas on how to make their products more circular. Will you help them identify opportunities to bring these ideas to the market?





This water authority manages the surface water quality in the Leiden area. Also, they are taking care of the dunes and dikes to protect us from flooding. Citizens are not always aware of the good work the water authority is doing and how this is threatened by climate change. Therefore, they are asking to create a product for students that makes the importance of a Water Authority visible for a sustainable (and liveable) future. Do you have creative ideas on how to approach this?





HTM is the transport company responsible for the busses and trams in the Haaglanden region. They have to redevelop the tram storage facility as it does not comply anymore with nowadays regulations and tram sizes. The big challenge is to make the new facility sustainable but affordable as it is built with societal money. Will you help them to design a sustainable storage facility?




The municipality of Leiden is investigating how they can make buildings more circular. Reusing buildings, parts of buildings or building materials is becoming more important. The municipality is interested to have a look beyond their own buildings and investigate how they can facilitate this circular economy for buildings in their municipality. Do you have ideas on how to make this work?