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A Tour of Denver Water
Daniel CromerKellene McKinney
Kristen PotterLynn Pruisner
Alex Ream
Pam Morse, TA
Introduction to Chemical EngineeringGroup 6—April 11, 2007
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Water—A Universal Product
70% of the earth is covered with water.
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Water—A Universal Product
70% of human body mass is water.
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Water—A Universal Product
The average consumption is168 gallons per day per person.
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Water—A Universal Product
Water is necessary—everyone needs it!
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The Water “Business”
CollectionPurificationDistribution
Future Planning
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Source Water Collection
Mountain Snowmelt* Streams & Rivers
DamsReservoirs
Recycled Water
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Purification
From Mountain Top to Tap
Removing Contaminants
Potable & Nonpotable Water Standards
Turbidity (3000.3)
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Distribution
Complex Network of Pipes Deliver toHomes
BusinessesIndustry
Fire Hydrants
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Denver Water
Denver Metro AreaWater Service provided by
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A Brief History of Denver Water
Colorado’s Oldest and Largest
Established 1918 whenDenver Union Water System
was purchased for $14 Million
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Fun Facts about Denver Water
2,631 miles of pipeline34 Underground Reservoirs
Fill INVESCO Field 2x per day
Serves 25% Colorado Population15,000 Fire Hydrants
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Denver Water People
Controls Engineer* Electrical and Civil Engineers*
Water Treatment Technician Water System Operator
Dillon Reservoir Caretaker Ground Laborers
Human Resource Specialist
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Denver Water Facilities
Main PlantsMarston, Moffat, Foothills
Recycle PlantsCommerce City
Completed 2004—$180 Million
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What is a Recycle Plant?
Process Lower Quality SourceEfficient Production for Nonpotable
UsesReuse Metro Wastewater
Mediates Drought ProblemsPopular Worldwide
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Denver Water Recycle Plant
“The Purple Pipes”
Saves Money and Potable Water
Customers: Xcel, Denver Zoo, Golf Courses
Model Recycle Plant for Cutting-Edge Water Treatment
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Analysis Lab
On-site and Fully Equipped
Accessible Samples—Any Stage
Organic and Inorganic Analysis
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Control Room
24/7/365.25
Computer Controlled
Full Monitoring:Data, Trends, Video
Security
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Location and Layout
Commerce City, CONear Large
IndustriesPlatte River
Linear Flow
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Recycle Plant Process
CollectionBio ProcessCoagulateFlocculationSedimentationFilterDisinfectStorage
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Recycle Plant Process
CollectionBio ProcessCoagulateFlocculationSedimentationFilterDisinfectStorage
Source Water
Metro Wastewater Collected
pH Balanced with NaOH
Ammonium Hydroxide added as nutrient for bacteria
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Recycle Plant Process
CollectionBio ProcessCoagulateFlocculationSedimentationFilterDisinfectStorage
Biological Filters
Bio-BacteriaSodium & Ammonia Nitrates
Watch what you put in!Disturbed biomass shuts down the plant for a week while they replenish themselves.
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Recycle Plant Process
CollectionBio ProcessCoagulateFlocculationSedimentationFilterDisinfectStorage
Mixing/Particle RemovalAlum—CoagulantCoagulates small particles
Open to the airOften have fish and or ducks in the water
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Recycle Plant Process
CollectionBio ProcessCoagulateFlocculationSedimentationFilterDisinfectStorage
This process rids the water of most large particles including the alum.
Inside and covered
Flocculation
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Recycle Plant Process
CollectionBio ProcessCoagulateFlocculationSedimentationFilterDisinfectStorage
Remove any large particles that made it through flocculation.(Fish, Light Particles)
Everything was covered in a layer of rust.(Not everything filtered)
Sedimentation
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Recycle Plant Process
CollectionBio ProcessCoagulateFlocculationSedimentationFilterDisinfectStorage
Filters
Filters out the very small particles left in the water to make extremely clear water (turbidity < 0.5)
Made of anthracite (a very hard pure form of coal)
Troughs spread the water out so that the filter is used evenly
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Recycle Plant Process
CollectionBio ProcessCoagulateFlocculationSedimentationFilterDisinfectStorage
Disinfect and Store
Chlorine disinfects water
Stored in large (300 x 23 ft) round storage tanks. 11 million gallonsStored under parks or other large open spaces
Pumped out to customers
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Impressive Plant
Beautiful architecture
Everything color coated
Cleanliness a priority
Separate buildings keep things organized and cost efficient
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Future Planning
Changing Quality StandardsHigh Security/Safety
Bad Chemicals: Unsafe water in Denver homes and establishments
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Future Planning
Limited Potable WaterMultiple Water Mains
Conservation and Education
Note: Use only what you need!
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Constant Expansion
2007Pump Station, Distribution Pipes, Storage Facilities
2010Additional Water Mains
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Conclusion
Potable or nonpotable, the water is clean!
Thank you!
AcknowledgementsDenver Water
Pam MorseCHEN 1300
University of Colorado