Bodem Breed 2011 - Potential of Aquifer Storage and Recovery (ASR) for a climate-proof irrigation water supply
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Bodem Breed 2011 - Potential of Aquifer Storage and Recovery (ASR) for a climate-proof irrigation water supply

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Bodem Breed 2011 - Potential of Aquifer Storage and Recovery (ASR) for a climate-proof irrigation water supply Bodem Breed 2011 - Potential of Aquifer Storage and Recovery (ASR) for a climate-proof irrigation water supply Presentation Transcript

  • Potential of Aquifer Storage and Recovery (ASR) for a climate-proof irrigation water supply
  • Potential of Aquifer Storage and Recovery (ASR) for a climate-proof irrigation water supply
    • Koen Zuurbier , Marcel Paalman
    • KWR Watercycle Research Institute
    • Bodem Breed, 29 november 2011
    • Session 5.3: Hydrology of the soil and physical aspects of groundwater
  • I. Knowledge for Climate…
    • Development of knowledge and services that make the Netherlands climate proof
    • Fresh water supply:
    • Develop robust, flexible and long-term solutions to bridge mismatch between fresh water demand and supply (quantity and salinity)
    -2000 -1500 -1000 -500 0 500 1000 1500 2000 2500 1 2 3 4 5 6 7 8 9 10 11 12 Westland horticulture, 5% dry year Water demand (1000 m3) Precipitation (1000 m3) Water shortage (1000 m3) Basins Shortage
  • II. Aquifer Storage and Recovery (ASR)
    • Short-term storage (replacing normal basins / storage tanks);
    • Seasonal storage: potential freshwater supply during summer droughts;
    • Applied since 1983, ~ 100 systems installed.
    • Successful in Bleiswijk region (Z-H) (‘Oostland’)
  • III. No guarantee for freshwater recovery
    • Early salinization of wells caused by
    • Mixing
    • Lateral groundwater flow
    • Buoyancy / density-driven flow in brackish – saline groundwater
    • What is controlling Recovery Efficiency (RE)?
    • Controlling factors:
    • Geological (aquifer thickness, hydr. conductivity, anisotropy)
    • Hydrological/hydrochemical (hydr. gradient, salinity)
    • Operational scheme (pumping rate and duration injection, storage and recovery)
    Ÿ Ÿ Salinity (mg/l Cl) Aquifer Thickness (m) Aquifer Hydraulic Conductivity (m/d) Hydraulic gradient (m/m) Anisotropy (-) Ÿ Ÿ Ÿ Ÿ Pumping rate (m/d) Operational scheme 3 Ÿ III. No guarantee for freshwater recovery What is the potential of this technique in Hotspot Haaglanden?
  • IV. Methods Thickness Hydr. conductivity Chloride (mg/l) REGIS II.1 Oude Essink et al. (2010) Greenhouses, groundwater pressure heads and 8 existing ASR systems in the hotspot Haaglanden A: Performance estimation tools B: Input (aquifer 1, GIS) R ASR <0.1: good performance 0.1<R ASR <10: uncertain R ASR >10: no recovery Maximal RE Sum factor R asr (-), indicative Buoyancy without lateral flow, isotropy no mixing Buoyancy and lateral flow, no mixing Bakker (2010): BAK Ward et al. (2009): WEA
  • V. Results
    • Large spatial variations in analyzed areas
    • Always some freshwater recoverable, most in central Eastland (R ASR <0.5, RE: 40 – 90 %)
    • Less suitable ASR condition in the Westland area (R ASR >0.5, RE: 5 – 70%)
    Ward et al. (2009): indicative performance under lateral flow and buoyancy Bakker (2010): exact RE under buoyancy only Lower aquitard absent Plume distortion (Ceric and Haitjema, 2005) Q=500 m 3 /d, t in =t rec =120 d, t stor = 0 d
  • V. Results Comparing both methods and 8 existing ASR systems Still large uncertainties in Ward et al (2009), results Bakker (2010) reasonably match the existing systems
  • VI. Discussion, conclusions
    • A first regional ASR performance estimation shows large variations
    • ASR may only be successful in designated areas
    • Further knowledge on bounding aquitards required (hydr. resistance)
    • Effect of engineering solutions like skimmer wells, freshkeeper…
    What is the potential of this technique in Hotspot Haaglanden?
  • End of presentation Pilot site Nootdorp