Using Past Innovation to Drive Current Seawater Desalination … · 2000-08-31 · © CaribDA 2...

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CaribDA 2012 Conference & Exposition “80 Years of Desalination Makes For One Happy Island”

in conjunction with

W.E.B. Aruba N.V.’s 80th Anniversary Celebration

19 – 22 June 2012 in Aruba

Using Past Innovation to Drive Current Seawater Desalination

Reverse Osmosis Designs

Holly Johnson Veolia Water Solutions & Technologies

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Agenda

• Background • Case Study

– Sur Oman – Aruba

• Discussion • Conclusion • Acknowledgements • Questions

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Background

• Seawater Desalination: Satisfying Municipal and Industrial Customers for Over 80 Years

• Growing Need for Desalination Worldwide – Water Availability, Industrial Constraints

• New Challenges for Facilities – Technical

• Maintain Efficiency, Online Availability

– Economic • Optimize CAPEX, OPEX

– Environmental • Minimize Marine Impacts

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Background

• Innovations From Past Facility Designs Improved Future Desalination Plants

• Value-Engineer Key Components to Achieve Multiple Objectives

• Case Study: Sur Oman and W.E.B. Aruba

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Sur Oman - Background

• Ministry of the National Economy of the Sultanate of Oman

• Limited Water Resources, Growing Water Needs • Goals:

– Provide Population of 350,000 with Drinking Water – Replace Existing Plant with State of the Art System

• Contract: Design-Bid-Build, 80,000 m3/day, 2007 • Commissioning: 2010 • Operations: Present - 2030

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Sur Oman – Site Location

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Sur Oman – Challenges and Objectives

• Facility Challenges – Technical

• Produce High-Quality Drinking Water • Ensure Consistent Plant Availability

– Economic • Optimize CAPEX, OPEX

– Environmental • Encourage Sustainable Water Supply • Minimize Environmental Impact

• Goal: Optimize Key Components with Greatest Number of Ancillary Benefits

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Sur Oman – Solutions

• Solution #1: Optimize Intake Structure

• Beach Well Expansion – 12 Wells 33 Wells – 70 – 100 L/s Each

• Solution #2: Improve Energy Recovery

• DWEER ERD – 24 units, integrated into

RO building

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Sur Oman – Design Impacts and Improvements

Parameter Impact Improvements

Beach Well Intake

Technical • Improved influent water quality

Economic • 50% reduction in pretreatment requirements • 64% reduction in chemical consumption

Environmental • Reduced potential for adverse impact due to oil spills, red tide

DWEER ERD

Technical • 97% energy recovery achievable Economic • Reduced OPEX

Environmental • Noise levels <85dB, vibration levels reduced

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Aruba – Background

• W.E.B. Aruba • Limited Water Resources, Growing Water Needs • Goals

– Provide Population of 100,000 and 700,000 Annual Tourists with Drinking Water

– Support Local Businesses – Replace Existing Plant with Improved System

• Contract: Design-Build, 24,000 m3/day facility, 2010 • Commissioning: On-going

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Aruba – Site Location

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Aruba – Challenges and Objectives

• Facility Challenges – Technical

• Produce High-Quality Water (TDS < 75 ppm) • Ensure Consistent Plant Availability (95%)

– Economic • Minimize CAPEX, OPEX

– Environmental • Encourage Sustainable Water Supply • Minimize Environmental Impact

• Goal: Leverage Experience from Sur Oman to Achieve Multiple Benefits at Facility

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Aruba – Solution

• Solution #1: Optimize Intake Structure • Beach Well Installation

– 10 Wells – 2,300 m3/hr Each

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Aruba – Design Impacts and Improvements Parameter Impact Improvements

Beach Well Intake

Technical

• MMF backwash cycle eliminated • Membrane lifecycle increased • Cartridge filtration replacement: 3 – 6 months instead of 21 days • Membrane cleaning frequency: every 6 months instead of 21 days • Chemical use reduced

Economic

• Energy costs reduced (< 4 kWh/m3 instead of 4.5 kWh/m3) • CAPEX reduced • Chemical costs reduced

Environmental • Footprint reduced • Minimal impacts on marine life

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Discussion

• Innovation Transfer Can Benefit New Desalination Facilities – Sur Oman Aruba – Beach Well Intakes, Plant Integration Strategies

• Due Diligence Must be Conducted on All Projects – “Best” Solutions May be Limited by Project-Specific

Constraints – Ensure Unique Challenges are Properly Addressed

• Experience an Important Driver for SWRO Designs – Achieve Multi-Faceted Benefits – Encourage New Innovations to Occur

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Conclusion

• Advancements in SWRO over 80 Years • Innovations Offer Opportunity for Design of New

Plants to be Improved • Target Key Processes that Affect Many Objectives:

– Technical – Economic – Environmental

• Consider Unique Challenges for New Facilities • Past Experience Important to Encourage New

Innovations in Future Facilities

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Acknowledgements

• Larry Jessup, Veolia Water Solutions & Technologies • Bernie Mack, Veolia Water Solutions & Technologies • Carla Robinson, Veolia Water Solutions & Technologies • Ron Sebek, Veolia Water Solutions & Technologies • Paul Choules, Water Standard

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Questions?