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


12-12-2011 Dutch pioneers unite in new Floating Construction Platform

After a year of preperations the Floating Construction Platform was officially launched on friday, December 2. The platform aims at bringing together all initiatives concerning floating construction and help expand this field. The Netherlands are to produce succesful examples...[more]


18-10-2011 Conferences

In the coming months, DeltaSync will be present at a number of international congresses. These are:

On October 31st and November 1st the international conference Watercities in Transition will be held. It is organized as part of the International Water Week (IWW). During the...[more]


14-10-2011 NTA Floating constructions

The Floating constructions committee of the Dutch Standardization Institute has presented the Dutch Technical Agreement (NTA) 8111 at the Water, Living & Space Conference on October 13th. With this agreement municipalities have the oppertunity to check if floating buildings...[more]



28-09-2011 Roadshow Eigen Haard

On september 27th DeltaSync facilitated a roadshow at housing association Eigen Haard in collaboration with Tauw and Deltares. The roadshow was held to support the company's development of knowledge and to enrich its innovation programme. 

The roadshow is an interactive...[more]


21-09-2011 Business case DNE

Together with the company 4-Tune, DeltaSync has been working on a business case for the Floating Utility Unit (DNE). The business case shows that for a house or building with living function, the pay back period is a maximum of 14 years. For an office function this is 19 years....[more]


05-07-2011 Prime Minister Nordrhein Westfalen meets DeltaSync

On thursday 16th of June, the Prime minister of the German state Nordrhein Westfalen, Hanneke Kraft, visited Yes!Delft. She made a tour through the building and spoke with several young entrepeneurs. DeltaSync was one of them. Ms. Kraft said to be very impressed by the...[more]


20-06-2011 FloodproBE stakeholder meeting

The second stakeholder meeting of FloodproBE was from May 18th till 20th in Trondheim. Several participants from the case studie cities were gathered to discuss the preliminary results.

FloodProBE is a European research project with the objective of providing cost-effective...[more]


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