Aquifer Storage and Recovery (ASR)Aquifer Storage and ... · ASR Facility: • Started ASR wells in...
Transcript of Aquifer Storage and Recovery (ASR)Aquifer Storage and ... · ASR Facility: • Started ASR wells in...
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Aquifer Storage and Recovery (ASR)Aquifer Storage and Recovery (ASR)Facilities Tour – Oregon
Prepared for : Englishman River Water Service (ERWS)Prepared for : Englishman River Water Service (ERWS)
November 9, 2011
arrowsmithwaterservice.ca
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Purpose:Purpose:
• Tour Plants and talk with the Engineers and Operators to discuss lessons learned
• Discuss advantages and disadvantages
• Discuss Challenges and procedures
• Discuss operational needs / budgets and Capital Costs
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Pendleton, OregonLocation:
350 Km east of PortlandPortland
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Pendleton, OregonOld West............ Meets Modern Technology
Background:
• City incorporated in 1880• Population served is 17,000• Growth Rate 1 4 %• Growth Rate 1.4 %• Prior to ASR (2003) they had two sources of Drinking Water
- Wells- Old Springs / River
Challenges:
• Aquifer Levels were decreasing 2’ – 4’ per year• Needed additional water • Limited surface water withdrawal - Federal fishery regulationsLimited surface water withdrawal Federal fishery regulations• Surface water (Umatilla River) – required treatment (State Regulations)• Very High Peak Summer Demand
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Pendleton, Oregon
Water Treatment Facility:
Pl t C it 57 000 3 /d (15 illi ll d )• Plant Capacity 57,000 m3 /day (15 million gallons per day) • Using Zenon 500C membranes • Will Reuse old membranes from the WTP for their future WWTP. • Solar panels as part of a third party partnership with Honeywell. • Removes all organics, viruses and bacteriag ,• Fully automated system, requires min. daily manual operation
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Pendleton, Oregon
ASR Facility:• Started ASR wells in 2003
3• Have 3 wells with a Limited License of up to 7,600 m3 /day (2 million gallons)• Total storage capacity of 1.5 million m3 (415 million gallons) storage and recovered annually• Looking at doubling their capacity with future upgrades• Recharge: November to May – Extract; June to October
Drinking Water In………Drinking Water Out
Advantages:
• Cooler water supplied in summer• Augment summer peak demands • Regenerate power when recharging
A if l l h t d d li i• Aquifer levels have stopped declining and are expected to increase with more ASR well production
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Tigard, Oregong , gLocation:
South of PortlandSouth of Portland
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Tigard, Oregon
Background:Background:
• Population served is 57,000• Growth Rate 16% (buildable land)• Over 18,000 service connections
Challenges:
• Aquifer Levels were decreasing • Mandated by State to stop using existing wells• Moratorium was put on Well Development
N d d ddi i l• Needed additional water • No secondary source of water• Limited supply of wholesale water from Portland Water District• Decommission old wellsDecommission old wells
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Tigard, Oregon
ASR Facility:
• Started ASR program in 2001 – first system• wells 600’ – 1000’ Columbia Basalt Aquifer• 568 000 m3 (150 million gallons) of storage• 568,000 m3 (150 million gallons) of storage• Extract 95 % of water• Converted 2 existing wells into ASR• Currently constructing new ASR Well – development funded• Operational period: injection October May extraction June September• Operational period: injection October – May, extraction June – September• Use treated water from other jurisdictions (Portland) to store in ASR wells
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Tigard, Oregon
Benefits:
• Cooler water supplied in summer• Augment summer flows
P d l i l i• Postponed costly capital water treatment expansions• Aquifer levels have stopped declining • Have found old abandoned artesian well come back into service• Onsite generation of CL2 – ‘just add salt’ = no CL2 gas in local neighbourhoods
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Beaverton, OregonLocation:
South-West of Portland
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Beaverton, Oregon
Background:
• Population served is 90,000
Challenges:
• Receive bulk water from Joint Water Commission• Looking at major water improvement facilities (pipelines, reservoirs & treatment)• Existing well production was limited• needed to bridge the gap when peak summer demands exceeded available supplyneeded to bridge the gap when peak summer demands exceeded available supply capacity
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Beaverton, Oregon
ASR Facility:
• Started ASR over 15 years ago• wells 600’ – 1000’ Columbia Basalt Aquifer• 568,000 m3 (150 million gallons) of storage
Can extract 23 000 m3 per day• Can extract 23,000 m3 per day• Recover over 95 % • Converted 2 existing wells into ASR plus one new construction• Operational period: injection October – May, extraction June – September• Use treated water from other jurisdictions to store in ASR wells• Use treated water from other jurisdictions to store in ASR wells
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Beaverton, Oregon
Benefits:
• Cooler water supplied in summer• Augment summer flows • Postponed costly capital water treatment expansionsos po ed cos y cap a a e ea e e pa s o s• Aquifer levels have stopped declining • Have improved native groundwater quality – reduced iron and manganese concentrations• Onsite generation of CL2 – ‘just add salt’ = no CL2 gas in local neighbourhoodsg j g g• Integrate ASR wells in existing neighbourhoods
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Summary........For Further Information on ASR Applications in the West see:
The Water Report Issue # 91 September 15 2011The Water Report , Issue # 91 - September 15, 2011Aquifer Storage and Recovery
Advantages, Challenges, Applications&
Approaches for Expanding ASR in the Westwww.thewatereport.com
Drinking Water in.................Drinking Water OutDrinking Water in.................Drinking Water OutDrinking Water in.................Drinking Water OutDrinking Water in.................Drinking Water Out
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Thank YouThank You
Prepared for : Englishman River Water Service (ERWS)
November 9 2011November 9, 2011
arrowsmithwaterservice.ca