01-12-2014 Research findings BlueRevolution on urban scale

At a global scale, it is known that the BlueRevolution has a huge potential. On a much smaller scale however, the urban scale, little was known. A recent study in the Rotterdam City Region has shown that there is also a great potential on the urban scale.

The study examined the following research questions:

  • What is the urban metabolism of delta city Rotterdam for nutrients, CO2 and water?
  • How can floating developments in Rotterdam (including algae, aquaculture and urbanization) contribute to closing resource cycles and realizing a circular economy in the city?


The research demonstrated that quaponic systems are very effective in producing food and biofuel within a closed cycle. An aquaponic system combines two other food production systems, namely aquaculture (raising fish) and hydroponics (cultivating plants). In the combined aquaponic system the excretions from the fish are broken down by bacteria into nutrients that can be used to feed the plants. This way the cycle is closed.


Figure 1: aquaponic cycle


According to the research implementing the BlueRevolution in the city of Rotterdam could provide 66% of the current vegetable consumption and 63% of the average protein consumption. Moreover, 32% of the passenger car transportation could be supplied with biofuel. Extra nutrients and CO2 that are needed for aquaponics can be retrieved from municipal wastewater and industrial processes in the Rotterdam City Region. Doing so contributes to making Rotterdam a climate resilient delta city.

The amount of water surface that is needed to implement the BlueRevolution in Rotterdam amounts to 75 km2. By combining food and energy production with floating urbanization in the form of working and living the city of Rotterdam is able to expand in the future and at the same time it can contribute to a sustainable climate.


Figure 2: Impact of the BlueRevolution in Rotterdam




20-11-2013 Study Water Demand in Urban areas

Photo: Tineke Dijkstra/Hollandse Hoogte, Beeldbank Deltaprogramma

In recent months, DeltaSync was commissioned by the Ministry of Infrastructure and the Environment to perform a study on the water demand of urban areas. In particular this concerns the additional water demand...[more]



18-11-2013 TEDxTalk Rutger de Graaf online

This week the TEDx video of Rutger de Graaf was published online. In this video he is talking about the need of floating cities.

Most of the bigger cities in the world are located along the coast. Every day around 150.000 people move to the city. This means that in 2100 4.5...[more]


04-10-2013 Seasteading Crowdfunding Campaign Ends Successfully!

The crowdfunding campaign launched by Seasteading Institute was a huge success, thanks to all 291 contributors who helped smash the $20,000 goal and bring the dream of creating the first floating city one step closer. Check out the project on Indiegogo or read more about it in...[more]




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