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


05-04-2011 Graduation project: Affordable sustainable floating houses

Two students from the Avans, University of applied sciences, did their final project on sustainable floating housing. DeltaSync coached them in this project.

The motivation for their research is the combination of a shortage of space for water storage on the one hand, and a...[more]


24-03-2011 Masterclass 'Living with Water in Haaglanden'

On March 24th the conference 'Living with Water in Haaglanden' was held at the office of Deltares in Delft. During the meeting, the participants met in water arenas and workshops to work actively with new knowledge and insights on water, environment and climate...[more]


14-02-2011 Junior TU Delft

For the third time the faculty Civil engineering and Geosciences organized the Junior TU Delft, a course for motivated highschool students. Five groups made a design for a floating city accompanied by Maurits Ertsen en Sandra Junier.

The students were lectured on...[more]


19-01-2011 Floating Games on the IJ

Floating Games on the IJ, in the heart of Amsterdam. A unique oppertunity to connect all Netherlands excellence.

Olympic Games on the IJ, on the border of the historic and the new city. With a temporary and mobile character for the Olympic locations and facilities. This...[more]


21-12-2010 Seasonal greetings

DeltaSync wishes you a merry christmas and a happy New Year!

We are looking forward to work with you in the future.

The DeltaSync Team[more]


08-12-2010 Strategic partnership Floating Life

DeltaSync and Floating Life have signed a strategic partnership in November. The will work together on organic, flexible urban development on the water in Almere. Both have the ambition to realize big scale floating urbanization. Decentralized water and energy supply through the...[more]


25-10-2010 Symposium on Floating Pavilion

On 1 October 2010 a special session was held on the Floating Pavilion for the Deltas in times of climate change conference in Rotterdam (www.climatedeltaconference.org). Key organizations who worked on this project gave a presentation on this project. The full program can be...[more]


19-10-2010 First water lots Harnaschpolder sold!

On October 18th the first three waterlots in de Harnaschpolder, Delft were sold. This means that three enthousiastic groups of people can start with the design and planning of their water house.

Two waterlots are still available. If you're interested please contact DeltaSync. [more]


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