Olmsted County WastetoEnergy Facility Solid Waste Division Rochester, MN www'olmstedwaste'com

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Olmsted County Waste-to-Energy FacilitySolid
Waste DivisionRochester, MNwww.olmstedwaste.com
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Olmsted WtE FacilityInitial view from the Road
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Olmsted County Waste-to-Energy
FacilityFactsSince opening in 1987, the Olmsted
Waste-to-Energy Facility has processed over 1
million tons of garbage to produce Energy from
Steam for Remote Air Conditioning, and generated
Electricity _at_ about 1,500 kilowatts per hour,
enough to power some 1,600 homes, any excess
being sold at wholesale cost on the power
grid.Energy sales account for approximately 23
of total waste fund revenue.Over 450,000 tons of
coal would be required to produce the same amount
of energy, conventional fuels conserved by using
Waste as fuel OWEF operates 24/7 with 32
PersonnelComputer controlled Combustion is
provided by a JapaneseTakuma Automatic
Combustion Control System.
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Olmstead County WtE FacilityDirectional Signage
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Olmsted W-to-E FacilityEnvironmental Protection

• OWEF provides a place for most waste materials
  and was developed, constructed and operated for
  maximum Environmental Protection.
• For over 17 years now, working in concert with
  Recycling, Hazardous Waste management, waste
  Abatement, Composting and state-of-the-art Land
  filling, pollution control and prevention are
  being successfully realized.

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Olmsted County WtE FacilityPublic Directional
Signage
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Olmsted County WtE FacilityRecycling Signage
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Olmsted County Public WorksSolid Waste Division

• Mission Statement
• The mission of Olmsted County Solid Waste
  Division is to plan, develop and maintain an
  environmentally sound, integrated solid waste
  management system for all citizens of the County

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Olmsted County WtE FacilityRecycling Building
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Olmsted County Recycling Centre

• The Recycling Centre offers one-stop waste
  disposal to individuals who want to transport
  their own garbage and recyclables.
• Recyclable materials are sent to recycling
  markets
• Waste materials are sent to Olmsted County waste
  disposal facilities

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Olmsted County WtE FacilityEntrance Gate
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Olmsted County WtE FacilityPrice Board
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Olmsted WtE FacilityDumping Compost Materials
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Olmsted CountyYard Waste Compost Site

• For people who do not practice home composting
• OCs Compost Site is open 7 days per week spring,
  summer fall during daylight hrs.
• There is No Charge to deposit yard waste Only
  grass clippings leaves are accepted
• Finished compost is available for a fee, or free
  on scheduled giveaway days spring/fall

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Olmsted County WtE FacilityFinished Compost
Trommel Screen (separates out unwanted material
from finished product)
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Olmsted County WtE FacilityThe Plant
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Olmsted Waste-to-Energy FacilityBurning Garbage
to produce Energy

• After homeowners and businesses have recycled
  aluminium, glass several types of paper
• The remaining refuse burned at the OWEF provides
  energy equivalent to about 800 lbs of coal for
  every ton of useless trash.
• Millions of tons of garbage are burned instead of
  going into a Landfill
• With a population increase of 8, there is a 33
  increase in garbage generated compared to 5 years
  ago, to be turned into Energy whilst holding
  costs.

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Olmsted County WtE FacilityFront Entrance
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Olmsted County WtE FacilityStained Glass Window
Depicting and made from Garbage
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Olmsted County WtE FacilityConference/Lecture
Room
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Olmsted County Waste FacilityEducational Program

• One Persons Trash
• OCWF provides
• Waste Management Guides for Teachers
• Quarterly Newsletters for school students
• School Tours of Waste-to-Energy Facility
• Lectures for 5/6th graders

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Olmsted County WtE Facility6th Grader Education
program
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Olmsted County WtE FacilityIllustrating items of
equivalent Energy (Kids Program)
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Olmsted County WtE FacilityReduced waste Samples
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RDF from Great River Energy FacilitySample of
MSW Refuse Derived Fuel that has been
sorted/pulverized/shredded for burning
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Olmsted County WtE FacilityControl Room
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Olmsted County WtE FacilityGrapple Operator,
Control Room
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OWEF Control Room2 of numerous sensors cameras
that provide instant information back to the
operators
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Olmsted County WtE FacilityGarbage Storage Pit
(from Control Room)
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Olmsted County WtE FacilityWaste Haulers dumping
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Olmsted County WtE FacilityGarbage being dumped
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Olmsted County WtE Facility2 ton Grapple
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Olmsted County WtE Facility2 ton Grapple load to
Furnace
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Process Flow Chart
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Olmsted Country WtE FacilityTouring the
Plantwith Tony Hill, Environmental Analyst
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Olmsted County WtE Facility TourUpper level
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Olmsted County WtE FacilityCombustion Chamber
floor
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Olmsted County WtE FacilityAnother Part of the
Combustion Chamber
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Olmsted County WtE FacilityInside the Combustion
Chamber
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Olmsted County WtE FacilityPower Generation
Turbines
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Olmsted W-t-E FacilityRenewable BioMass Fuel
Renewable Biomass Fuel (garbage) produces
energy for 26 buildings in the city of
Rochester Population Economic growth make it
imperative that we seek the best use of the Waste
we generate Research is ongoing to find alternate
uses for the residual Ash
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Olmsted County WtE FacilityCreating Energy from
Public Garbage
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Olmsted County WtE FacilityFly Ash Conveyor
System
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Olmsted County WtE FacilitySpray Dryer Absorber
(scrubber) for controlling acid gases (S02/HCI)
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Olmsted County WtE FacilitySlurry Tanks for
storing mixing hydrated lime slurry for the
Scrubber
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Olmsted County WtE FacilityLime Silo used to
store lime for Slurry Tanks
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Olmsted County WtE FacilityBottom Ash Discharger
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Olmsted County WtE FacilityPowdered Activated
Carbon System(captures condensable pollutants)
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Olmsted County WtE FacilityBottom of Fabric
Filter Baghouse(controls fine particulate
matter, organics metals)
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Olmsted County WtE FacilityFabric Filter
Baghouse(collects fly ash, scrubber residue
PAC)
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Olmsted County WtE FacilityFlu Gas Pipe
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Olmsted Waste-to-Energy FacilityEmissions

• OWEF emissions have been well below permitted
  limits throughout its history
• A new Air Pollution control system was added to
  the OWEF in 2004, to assure compliance with
  future emission limits
• Industry studies indicate that WtE facilities
  provide cleaner energy compared to most other
  conventional energy sources

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Olmsted County WtE FacilityStack
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Olmsted County WtE FacilityAir Emission
Comparison Chart
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Olmsted County WtE FacilityAsh Refuse
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Olmsted Waste-to-Energy FacilityAsh

• The Ash resulting from W-t-E combustion
  represents 90 less volume
• There are 10 truckloads of garbage to one of Ash
• Ash is more stable in chemical form than garbage
  in a landfill, significantly reducing potential
  for groundwater contamination
• Landfill Ash conserves landfill space lessens
  components from leaching into the groundwater.

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Olmsted County WtE FacilityTrend Chart
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Olmsted W-t-E FacilityUnit 3 Expansion Project

• The original cost of the existing OWEF was 27
  million, which will be paid off by 2007
• The new APC System completed in January 2004 was
  a 10 million project.
• Adding an additional 200-ton-per-day Unit to the
  existing OWEF will double capacity and greatly
  contribute to extending the life of the Kalmar
  Landfill.
• Cost of the 3rd Unit will be between 70 90
  million, paid for from reserves/bonds/utility
  sales tipping fees - with no increase in
  property taxes.

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Kalmar Olmsted Countys multi-purpose Landfill

• Operated under MN Pollution Control Agency (MPCA)
  Rules, Kalmar accepts
• Demolition Construction Debris
• Mixed Municipal Solid Waste
• Medical waste Coal
• MSW Ash.

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Olmsted County WtE FacilityTour of Aug 16, 2005