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


27-09-2012 Platform Floating Construction launched

During the Water Wonen & Ruimte congress, on the 27th of September 2012, the official launch of the Platform Floating Construction takes place. This foundation, co-founded by DeltaSync, aims at pushing forward building on water and joining forces to overcome obstacles....[more]


01-09-2012 5 year anniversary DeltaSync

Friday the 31st of August DeltaSync celebrated its 5 year anniversary. In honour of the occasion the company relations were invited to the Floating Pavilion and acknowledged for their support and pleasant cooperation. A glance at the plans for the next 5 years, which will be...[more]


29-06-2012 Water Development Scan Arnhem

In commission of the municipality of Arnhem, eleven locations have been analysed for the opportunities of floating and floodproof urban development. After a preselection, the top 5 locations have been further studied to find out which water robust typology would be most...[more]



20-02-2012 Expo 1.0 geopend in Netherlands WaterCentre

Donderdag 9 februari is in aanwezigheid van topbestuurders uit de Nederlandse Watersector Expo 1.0 geopend in het Drijvend Paviljoen in de Rotterdamse Rijnhaven. NWC Expo 1.0 toont de eerste aanzet van een permanente expositie over de gezamenlijke innovatiekracht van de gehele...[more]


05-01-2012 Rotterdam The Hague Airport as safe haven

Recent research points out that Rotterdam The Hague Airport may be regarded as a relatively safe area in the west of the Netherlands, with low flood depth and velocity. Therefore it is currently investigated whether the airport could make a strategic location for a flood shelter...[more]


23-12-2011 Seasons greetings

Seasons greetings and best wishes for 2012[more]



Displaying results 49 to 56 out of 88

< Previous

1

2

3

4

5

6

7

8

9

10

11

Next >

Press information and downloads

Go to our download section for press to download high quality images for use in the press.

 

 

Newsletter

Newsletter archive

Here you can download all the newsletters DeltaSync has published since 2009: 
(the newsletters are only in Dutch)

2013

> March


2012

> February

> June

> special: BlueRevolution


2011

> March

> June

> October


2010

> February

> July

> December


2009

> March