Fresh water supply and water quality at national and regional scale Toelichting prepoposal thema 2
Scope van het voorstel • Focus op lokale tot regionale oplossingen • Wel potentie op landelijke schaal in beeld brengen • Afstemming met en inbreng van landelijke (Deltaprogramma) en EU projecten • Goede mix AIO/Postdoc onderzoek (55%) en staf onderzoek
Gebaseerd op hotspotvragen • A. How can fresh water supply be robustly designed in order to be flexible in anticipating a wide range of climate effects • B. What opportunities are offered by reduction of water demand and/or water reuse • C. What are opportunities and setbacks of water supply by allocation and buffering • D. What opportunities are offered by water technology and spatial planning • E. How can we adapt to periods of water scarcity and water quality changes • F. How effective are these strategies on different scales
Adaptatie oplossingen
Werkpakketten
WP1 Climate change in the Netherlands in a global/European perspective - our boundary conditions randvoorwaarden, bedreigingen maar ook kansen
1. Impacts of upstream CC induced developments (quantity and quality) for the Netherlands Deltares, Alterra and BfG (KLIWAS) randvoorwaarden a.g.v. klimaatverandering, maatregelen in het gehele stroomgebied
2. Prospects Netherlands under CC in a global and European perspectives – PhD UT – hoe verandert de relatieve positie van NL 1 AIO onderzoek en 1 staf/postdoc project . Afstemming met thema 6 / KNMI
WP2: Adapting fresh water supply and buffering capacity to a changing climate Hoofddoel: Welke maatregelen zijn toe te passen om systeem-eigen zoetwaterbeschikbaarheid te optimaliseren, gegeven klimaatverandering?
2.1 Uitwisseling grondoppervlaktewater tijdens droogte nu en later, en: hoe verbeteren?
2.2 Beschikbaarheid zoet water wortels gewassen nu en later, en: hoe verbeteren?
WP2: Adapting fresh water supply and buffering capacity to a changing climate 2.1 Implementing measures to droughts and salinization in the coupled groundwater – surface water system at different scales under climate change – Integraal beschouwen droogte & verzilting onder klimaatverandering – Lokaal systeem regionaal waterbeheer NL Waterverdeling – Afwegen maatregelstrategieën op lokale en regionale schaal (o.a. doorspoeling, peilgestuurde drainage)
2.2 Increasing the local availability of fresh water by creating a robust and flexible buffering capacity of fresh water stored in subsurface freshwater lenses on the local scale – Kwantificeren dynamiek van regenwaterlenzen onder meerdere veldcondities – Knikpunt- en risicoanalyse: vaststellen wanneer en onder welke condities regenwaterlenzen verdwijnen – Kwantificeren van de huidige en toekomstige zoutschade aan huidige en alternatieve gewassen (link met WP3) – Opstellen efficiënte mitigatie- en adaptatiestrategieën op regionale en nationale schaal (Opschalen).
2 AIO onderzoek + staf begeleiding . Afstemming met WP3 en thema 3
WP3 Adaptation and implications of increasing salt water pressures to agriculture and nature •
5. Adapting the Salt Tolerance Assessment Framework STAF to higher salinities caused by climate change and to understanding gained since 1980, when the current STAF was developed - PhD WUR.
Valt er
iets te winnen via zouttolleranties •
6. Cultivation of salt tolerant agricultural and horticultural crops to adapt to salinisation caused by climate change: ‘Sustainable exploitation of saline and brackish water’- PhD VU.
Mogelijkheden voor
nieuwe gewassen •
7. Anticipation and assessment of the effect of increasing salinity pressures on nature with monitoring, modelling and data assimilation - PhD WUR.
In
hoeverre kan natuur meebewegen met wisselende saliniteits omstandigheden 3 AIO onderzoek + staf begeleiding . Afstemming met WP2 en thema 3
WP4 Water technology as a tool for sustainable regional water supply • wat is de potentie van deze technieken? • welke bezwaren moeten worden ondervangen? • 2 projecten 8. ASR as a tool for regional water supply: potential, hurdles and solutions – PhD VU 9 .Potential of desalination and novel abstraction techniques for regional water supply – KWR & TNO 1 AIO onderzoek en 1 staf/postdoc project
Salinization of fresh water abstraction points in two branches of the Rhine estuary due to low river flow Current situation (2003)
Low river flow (W+ scenario)
agriculture
Drinking water
11
Adaptive strategy (2): Desalination Application of reversed osmosis or membrane filtration Already put in place at one brackish well field (Oasen) Drawbacks • high energy consumption • membrane concentrate (brine) has to be disposed of Environmental impacts?
Pilot project seawater desalination 15 m3/h (Evides)
12
Adaptive strategy (3): Dual abstraction of ground water Fresh holder concept (pilot project) – Current practice: groundwater abstraction from a small fresh water lens overlying brackish groundwater (coastal areas) – Risk of upconing of brackish groundwater – Solution: dual extraction from the fresh water lens and the underlying brackish water layer – Desalination techniques to treat the brackish water; concentrate is disposed of in deep (saline) aquifer – Result: upconing of brackish water reversed, stable fresh water lens, sustainable extraction possible
Upconing of brackish ground water
fresh holder
13
Adaptive strategies (4): Flexible intake strategy and multiple sources
5
6
Flexible intake of river water depending on availability (river flow) and water quality; storage of raw water in reservoir Temporary storage of treated water in suitable aquifer to match peak demands But: be aware of water quality impacts!
7
8
50
9
300
6
7
8
45
9
As
10
Tampa ASR-1
250
Start Inj
40
Start Rec Storage Period
200
Cl
30 25
150
Cl [mg/L]
As [ug/L]
35
20 100 15 10 50 5 0 1-Jan-03
0 1-Jul-03
1-Jan-04
1-Jul-04
1-Jan-05
1-Jul-05
1-Jan-06
1-Jul-06
1-Jan-07
14
1-Jul-07
Data P. Stuyfzand
WP5 - Decision making under uncertainty: finding a robust and flexible fresh water supply strategy 1. Development of guiding principles and indicators for a robust and flexible fresh water supply under CC – PhD student UT/UU– Hoe kun je in verschillende strategieen voor zoetwatervoorziening omgaan met onzekerheden vertaald naar ‘guiding principles’ en indicatoren
2. Developing the evaluation framework for the integrated case – postdoc TUD, supported by specialists from - Deltares, Alterra and VU – effecten, kosten-baten, andere criteria, Nadrukkelijke link met thema 8 onderdelen optimale zoetwaterverdeling / KBA methoden 1 AIO onderzoek en 1 staf/postdoc project
WP6 Integrating case Mid-West Netherlands • Integrale analyse en beoordeling effecten van maatregelen – gebruik makend van WP5 • Specifieke regio’s vast te stellen in overleg met hotspots • Toepassen van opgedane onderzoekskennis (WP 1-4) • Toepassing van methoden uit thema 8 / 7 • Komt bovenop pilots in WP’s
Participatie stakeholders • • • •
Bij uitwerking definitieve voorstel In projectbegeleiding In case studies en integratie case(s) Via Deltaprogramma
Wetenschappelijke excellentie • Samenstelling consortium • Scientific advisory board • Meedoen internationale partners
Cofinanciering • Stakeholders • Kennisinstellingen
Consortium
