Wastewater Reuse Expansion in Austin
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Transcript of Wastewater Reuse Expansion in Austin
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Wastewater Reuse
Expansion in Austin
Ryan Grosskopf
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2009
• 5.2 MGD• Avg potable
water production of 142 MGD
• Summer residential landscape use: ~25%
2034
• 15 MGD• Avg water
production ???
Primary Uses
• Cooling water• Golf courses• Landscape
irrigation
Austin Wastewater Reuse
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Centralized Austin Reuse
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Problem?
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Possible Solution: MBRs and
Decentralized Reuse
http://www.eflo.com/pdfs/eflo-mbr.pdf250 m3/day or about 66,000 gpd
Small Footprint
Low maintenance
Sewer mining
$7-20 / gallon capacity
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Where?Determine Treatment Plant
and Use LocationsCity of Austin• 2008 Land Use
Dataset• 2010 Wastewater
and Reuse Network DataUSGS
• 1/3’ DEM
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Current Infrastructure Limitations: 51st Street
Tower
http://www.austinchronicle.com/
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Which Neighborhood for Service?
Land Use
Irrigated Area
Single Family 40%Duplexes 30%Apartment/Condo 0%Commercial 0%Office 0%Government Services 0%Educational 20%Meeting and Assembly 0%Cemetaries 75%Parks/Greenbelts 20%Undeveloped 0%
• 2009 annual average:.042 inches/day
Accuwater Evapotranspiratio
n Index
• .025-.300 MGDPackage MBR plant capacity
• ~70 feet of head required for irrigation sprinklers
Elevation
Evaluation by hand…. TEDIOUS!
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Single Family
Duplexes
Educational
Cemetaries
Parks/Greenbelts
Non-Irrigated
Total Area:640 Acres or 2.6 km2
Total Esti-mated Irriga-tion Volume:.31 MGD or 1173 m3/d
Selected Neighborhood Land Use by Area:
~95% of property area likely has some
irrigation
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Plant LocationDistance from > 24”
wastewater mainElevation gain from
neighborhoodProperty type and
size
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Jackpot!