atlantic treatment plant combined heat and power (chp...
TRANSCRIPT
Atlantic Treatment Plant
Combined Heat and Power (CHP)
February 1, 2017
Rick Raike
Chief of Electrical and Energy Management
Presenter
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This presentation will provide a brief discussion of the CHP in the following areas:
• Provide an overview of the CHP system
• Discuss what the CHP does for HRSD
• Discuss what the CHP does for the environment
• Investigate some of the challenges with implementation
• Investigate some of the ongoing challenges
• Discuss a forward path with the CHP
Outline
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HRSD is a regional wastewater treatment
agency that serves 17 counties and cities.
What Is HRSD?
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We clean the wastewater that is created to
protect public health and the waters of
Hampton Roads.
What Do We Do?
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Why Do We Do It? For Everybody!
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Where Do We Do It?
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The Atlantic Treatment Plant in southeast
Virginia that can treat up to 54 million gallons
of wastewater every day.
Where Do We Do It?
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The Atlantic Treatment Plant in southeast
Virginia that can treat up to 54 million gallons
of wastewater every day.
Location of
Two Cummins,
1100 kilo-watt
methane engine
driven generators
Atlantic Treatment Plant CHP – Project Information
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The Atlantic Treatment Plant
produces enough methane to
power one 1100 kW, methane
engine driven generator.
A second generator is
alternatively run to allow
engine maintenance and to
maintain lower demand costs.
Cost of project $9.1 Million
-$1.2 million grant,
-$1.8 million low interest loan
-Green energy
Gas consumption 180 SCFM
kWhrs produced 7,200,000
Environmental Benefits:
Remove Methane, Sulfur, CO2
Atlantic Treatment Plant CHP
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Atlantic Treatment Plant CHP
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Atlantic Treatment Plant CHP – Cummins Engine Generators
Atlantic Treatment Plant CHP – Cummins Engine Generators
Atlantic CHP - Heat Recovery
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Atlantic CHP - Methane Engine Radiator
Atlantic Treatment Plant CHP – Control Skid
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Atlantic Treatment Plant CHP – Gas Storage
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Control Schematic
Atlantic Treatment Plant CHP - Component Parts
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Iron
Sponge
Bio-
Scrubber
Iron
Sponge
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Particulate
Filters Compressors Heat
Exchanger
Glycol Chiller
System (behind)
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Siloxane Absorption
Final
filter
Clean, Conditioned Methane Headed to Engine Generators
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Atlantic Treatment Plant CHP – Control Skid
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• Stabilize the system – Find the optimum operation
– Peak shave vs base load
• Meet regulations, NOx, CO
• MTBO, 15,000 hours – Oil changes, spark plugs, head replacement
• Maintaining Gas efficiency, 600 BTU at 60%
• Injecting Fertilizer
• Metering
• Engines shutting down
Challenges
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• Good to implement this project
• Overcoming the electrical and mechanical
challenges
• Currently meeting the regulatory challenges
• Right thing to do for the environment
• Starting to look at renewable energy credits
• Look at the other benefits
Summary
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• FOG
• Thermal Hydrolysis Process (THP) will use a process to pulverize the solids and give HRSD an energy neutral opportunity to provide: – Additional digester capacity and additional gas
– Class A solids
Opportunities –
Other plants can efficiently dispose of their solids
……allowing us to:
– Run two or three methane gas engine generators
Future Opportunities
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The CHP’s are an opportunity
that allows HRSD to convert
waste into fertilizer and power.
