impact of floating urbanisation on water quality and ecology
TRANSCRIPT
The effect of floating urbanisation on
ecology and water quality
F.C. Boogaard(2)(4), R.E. de Graaf(1)(5), M. Dionisio
Pires(3), V. Sazonov(1)(5), R.L.P de Lima(1)
(1) DeltaSync, Delft, The Netherlands; (2) Tauw, Amsterdam, The
Netherlands; (3) Deltares, Delft, The Netherlands; (4) Hanze University of
Applied Sciences, Groningen, The Netherlands; (5) Rotterdam University
of Applied Sciences, Rotterdam, The Netherlands
ir. F.C. (Floris) Boogaard,
0031651 55 68 26
e-mail: [email protected]
Content
• Research questions
• Effect on water quality
• First inventarisation
• Measurements
– Innovating approach
– First results
• More info?
• Knowledge exchange
Objectives / Research Question
• The impacts of floating urbanization on water quality
and ecology are largely unknown by water authorities
and municipalities (needed for policy framework and
regulations).
• Research question: What are the (negative and
positive) impacts of floating urban development on
water quality and ecology?
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*Hypotheses
* The shadow of floating houses reduces available sunlight. This lowers
the dissolved oxygen levels in their vicinity.
* Below the floating houses a hypoxic area is created and oxygen is
transferred laterally by the adjacent water column. This lowers the
dissolved oxygen levels in their vicinity.
*Wind tunnel effect is produced by the floating houses increasing the
turbulence of the water. This increases the mixing in the water column
which reduces the dissolved oxygen vertical gradient.
Research question
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• Many quantities
• Turbidity
• Temperature
• Dissolved Oxygen
• pH
• Electro conductivity
• Nutrient Loads
• Many interactions
• Biological
• Chemical
• Physical
Research Context: Water Quality
Research method
• Literature review• Inventarisation• Field visits• Surveys• Workshops• First Measurements
•Several case studies•Case 1: Delft•Case 2: Groningen•Case 3: Amsterdam•Case 4: Utrecht
•Case 5: …. Model• Output
•Report on detailed research •Tool for international knowledge exchange•….
Research method
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Numerical modelling: Oxygen
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max 0( , , )TP G I SD z Chla
. . . .( ) ( )s a D O sat D OF k w C T C 201
2
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rs rsR k ChlaYCHO
20T
b bD k BOD
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b sS SH
Research method
Meten (continue F=5min):
- zuurstofgehalte
- temperatuur
- waterstanden
Why continue measurements?
OTD6 waterstand/zuurstof/temperatuur in Heeg
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datum
wa
ters
tan
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cm
+N
AP
]
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tem
pe
ratu
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[C],
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urs
tof
[mg
/l]
waterpeiltemperatuurzuurstofbem 651 temperatuurbem 651 zuurstof
Waterquality is dynamic in time and depth
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Research| Water quality/ecological impact floating structures
Method: Water Quality Measurements
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Research| Results
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Research| Results
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Research| Results
Overzichtsfilmpje
• https://www.youtube.com/watch?v=pWfeBo33EQU
Presentaties
– Drijvend bouwen en waterkwaliteit. Presentatie bij startbijeenkomst. Floris Boogaard, Rutger de Graaf en Miguel Dionisio. Tauw Utrecht, 21 januari 2014
– Drijvend bouwen en waterkwaliteit, workshop met bouwers. Floris Boogaard, Rutger de Graaf en Miguel Dionisio. Deltares, Utrecht. 20 mei 2014.
– Workshop presentation. Tijdens internationale conferentie Deltas in times of climate change 2, 25 september 2014, http://www.youtube.com/watch?v=x9JoF7_Dw-o&feature=youtu.be
– Poster presentation Workshop presentation. Tijdens internationaleconferentie Deltas in times of climate change 2, 25 september 2014
– Presentatie DeltaSync Academy, 5 September 2014
Collegereeks
– Webinar SKB. Online college waterkwaliteit en drijvend bouwen, dinsdag 7 oktober van 16.00 - 17.00 uur: deel 1, dinsdag 4 november van 16.00 -17.00 uur: deel 2. http://www.skbodem.nl/actueel/agenda/160
Deel 1: http://www.youtube.com/watch?v=sy98ERWNGE8
Deel 2: https://www.youtube.com/watch?v=hnGMGz5VRes
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Research| Results
Publicaties
– Vakpublicatie. Land en Water. Mei 2014. http://repository.tudelft.nl/assets/uuid:e4421e2e-613a-4b16-8044-a1f4329d74b0/305156.pdf
– Abstract Effects of floating urban development on water quality and ecology. Internationale conferentie Deltas in times of climate change 2.
– Poster Effects of floating urban development on water quality and ecology. Internationale conferentie Deltas in times of climate change 2
Rapportages
– Literatuuronderzoek, Miguel Dionisio, Deltares
– Foka, E. (2014) Water Quality Impact of Floating Houses’ MSc thesis TU Delft.repository.tudelft.nl/view/ir/uuid%3A1917ffa4-15ac-4c37-8be0-af706f2bc25e/
– Rapportage IJburg, HvA (gereed)
– Lima, R.P. en V. Sazonov(2015) DeltaSync Report Water Quality Measurements.
Pers
– Interview RTV Noord Floris Boogaard, september 2014 http://www.rtvnoord.nl/gemist/videogemist.asp?v=30991
– Interview CoBouw September 2014 http://www.cobouw.nl/nieuws/algemeen/2014/09/11/onderzoek-nodig-naar-kwaliteit-van-water-onder-drijvende-constructies
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Research| Results
New Company
Dynamic Monitoring of water quality and ecology
Upscaling: floating structures other applications e.g.:
Ecological measures
Quay walls and structures
Inspection
Improving the drone and further research
Next steps
For more information:
DeltaSync
Dr. ir. Rutger de Graaf-van Dinther
T: +31 152561872
www.deltasync.nl
www.blue21.org
http://kenniscentrumrdm.hr.nl/nl/kenniscentrum/lectoren/Rutger-de-Graaf/