a tour of denver water daniel cromer kellene mckinney kristen potter lynn pruisner alex ream pam...

A Tour of Denver Water

Daniel CromerKellene McKinney

Kristen PotterLynn Pruisner

Alex Ream

Pam Morse, TA

Introduction to Chemical EngineeringGroup 6—April 11, 2007

Water—A Universal Product

70% of the earth is covered with water.

Water—A Universal Product

70% of human body mass is water.

Water—A Universal Product

The average consumption is168 gallons per day per person.

Water—A Universal Product

Water is necessary—everyone needs it!

The Water “Business”

CollectionPurificationDistribution

Future Planning

Source Water Collection

Mountain Snowmelt* Streams & Rivers

DamsReservoirs

Recycled Water

Purification

From Mountain Top to Tap

Removing Contaminants

Potable & Nonpotable Water Standards

Turbidity (3000.3)

Distribution

Complex Network of Pipes Deliver toHomes

BusinessesIndustry

Fire Hydrants

Denver Water

Denver Metro AreaWater Service provided by

A Brief History of Denver Water

Colorado’s Oldest and Largest

Established 1918 whenDenver Union Water System

was purchased for $14 Million

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

Denver Water People

Controls Engineer* Electrical and Civil Engineers*

Water Treatment Technician Water System Operator

Dillon Reservoir Caretaker Ground Laborers

Human Resource Specialist

Denver Water Facilities

Main PlantsMarston, Moffat, Foothills

Recycle PlantsCommerce City

Completed 2004—$180 Million

What is a Recycle Plant?

Process Lower Quality SourceEfficient Production for Nonpotable

UsesReuse Metro Wastewater

Mediates Drought ProblemsPopular Worldwide

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

Analysis Lab

On-site and Fully Equipped

Accessible Samples—Any Stage

Organic and Inorganic Analysis

Control Room

24/7/365.25

Computer Controlled

Full Monitoring:Data, Trends, Video

Security

Location and Layout

Commerce City, CONear Large

IndustriesPlatte River

Linear Flow

Recycle Plant Process

CollectionBio ProcessCoagulateFlocculationSedimentationFilterDisinfectStorage

Recycle Plant Process

CollectionBio ProcessCoagulateFlocculationSedimentationFilterDisinfectStorage

Source Water

Metro Wastewater Collected

pH Balanced with NaOH

Ammonium Hydroxide added as nutrient for bacteria

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.

Recycle Plant Process

CollectionBio ProcessCoagulateFlocculationSedimentationFilterDisinfectStorage

Mixing/Particle RemovalAlum—CoagulantCoagulates small particles

Open to the airOften have fish and or ducks in the water

Recycle Plant Process

CollectionBio ProcessCoagulateFlocculationSedimentationFilterDisinfectStorage

This process rids the water of most large particles including the alum.

Inside and covered

Flocculation

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

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

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

Impressive Plant

Beautiful architecture

Everything color coated

Cleanliness a priority

Separate buildings keep things organized and cost efficient

Future Planning

Changing Quality StandardsHigh Security/Safety

Bad Chemicals: Unsafe water in Denver homes and establishments

Future Planning

Limited Potable WaterMultiple Water Mains

Conservation and Education

Note: Use only what you need!

Constant Expansion

2007Pump Station, Distribution Pipes, Storage Facilities

2010Additional Water Mains

Conclusion

Potable or nonpotable, the water is clean!

Thank you!

AcknowledgementsDenver Water

Pam MorseCHEN 1300

University of Colorado