30-09-2014 Measuring water quality underneath floating structures



This research is a collaboration between Tauw, Deltares, Deltasync and various Dutch universities, water boards and municipalities. It focuses on the impacts of floating urban developments on the water quality and ecology, which are currently largely unknown. Coverage of the water surface is known to influence air-water interactions and penetration of light, but knowledge on this subject is limited. This knowledge gap complicates the job of water authorities and municipalities in creating a policy framework, and therefore to regulate and facilitate the development of new floating projects.

In order to investigate the water quality around and under floating structures, a remote-controlled underwater drone equipped with several water quality sensors and a video camera, is currently being used to go under floating structures to collect data. The sensors allow to monitor the following water quality parameters: pressure (depth), temperature, conductivity, nitrate, ammonium, dissolved oxygen and turbidity.


The extracted data provides information on how the water quality parameters vary under floating structures. To understand whether the floating body has an effect on water quality, the data is compared to parameters from the same water body, but from zones unaffected by the blockage caused by the floating structure. As an example of this methodology, the figure below shows graphs where measurements from open water are easily compared to measurements under the floating structures. The presented data was collected from the Floating Pavilion, in Rotterdam.


Click the above image to see a larger version


In addition to the data from the sensors, the underwater drone also allows to collect footage of aquatic life, which is also a good indicator of water quality.


Based on the preliminary results from this study, it seems that the current small scale floating structures do not have a significant influence on water quality. Moreover, it was understood that underwater drones are suitable to use for water quality measurements, considering that they can easily go under floating structures to collect data (expensive and troublesome to access by other methods). However, with the used equipment, there are still some challenges to overcome such as the difficulty of knowing the exact location of the drone.

All the collected data and videos from several locations around The Netherlands are available in an online tool (www.climatescan.nl), which is constantly being updated with new data. This website aims at promoting knowledge transfer among stakeholders, and to help gaining insight on the environmental impact of floating solutions.

Finally, the video in the link below gives a general impression of the project:
youtu.be/IwuELH66L_c

For the presentation given at the Deltas in Times of Climate Change conference visit the following link:
youtu.be/x9JoF7_Dw-o


07-06-2011 Symposium Rijnhavenpark

On the 17th of June a symposium will be held about the Rijnhaven park. The Rijnhaven park is an innovative and creative design for a floating city park in the ports of Rotterdam. The vision and plan are developed by students of INHolland, Hotelschool The Hague and Wellantcollege...[more]



24-05-2011 Roadshow innovative water management Waterboard Rijnland

On the 24th of May, DeltaSync gave a Roadshow on 'Water management in the city of the Future', in close collaboration with Tauw and Deltares. The purpose of the meeting was to work on innovations in water management in a creative and inspiring way. Topics discussed included...[more]


19-05-2011 DeltaSync official partner Revolt House

DeltaSync is official partner of the Revolt House, the submission of the TU Delft for the Solar Decathlon. The ReVolt House is designed by a group of students from the TU Delft, as a floating, rotating house that follows the sun to optimize the use of solar energy. It is an...[more]


11-05-2011 Visiting the Floating Pavilion

Also in 2011 it is possible to visit the Floating Pavilion in the Rijnhaven. Untill October the pavilion is open for the public on every third saturday of the month. The opening hours are 12.00 till 17.00. The dates are:

15th of May19th of June17th of Juli21st of August18th of...[more]


11-05-2011 Exposition on Floating Architecture

Rotterdam Info, on the Coolsingel, has opened an exposition on 'Floating Architecture'. In this exposition multiple designs of DeltaSync are shown. De exposition will be on display in May and June. Afterwards it will be shown on other locations in Rotterdam. [more]


14-04-2011 TAB conference June 23rd

TAB is a new concept that improves flexible use of space in time. It is extremely useful for areas in transition or with changing functions, and creates opportunities for climate adaptation and sustainable development.

Join the TAB conference at 23 June 2011. More info (in...[more]


13-04-2011 Expert meeting Floating City

On April 13th, DeltaSync hosted an expert meeting on the Floating City. The purpose of the meeting was to discuss the economic, legal, ecological and watertechnical implications of a Floating City. After a introduction by Rutger de Graaf, different topics were discussed in...[more]


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