Design, Construction and Implementation of a Pilot Scale Anaerobic Digester at the University of...
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![Page 1: Design, Construction and Implementation of a Pilot Scale Anaerobic Digester at the University of Missouri-Columbia’s Swine Teaching and Research Farm](https://reader036.fdocuments.us/reader036/viewer/2022070314/554da6b3b4c905ff7a8b4ad6/html5/thumbnails/1.jpg)
Design, Construction and Implementation of a Pilot
Scale Anaerobic Digester at the University of Missouri’s
Swine Teaching and Research FarmBy:
Brandon HarveyResearch Assistant, Agricultural Systems Management
Teng LimAssistant Professor, Agricultural System Management
Kevin RohrerEngineer, Martin Machinery
![Page 2: Design, Construction and Implementation of a Pilot Scale Anaerobic Digester at the University of Missouri-Columbia’s Swine Teaching and Research Farm](https://reader036.fdocuments.us/reader036/viewer/2022070314/554da6b3b4c905ff7a8b4ad6/html5/thumbnails/2.jpg)
Purpose of Project
• Establish a pilot scale, on-farm anaerobic digester
– Potential Renewable Energy Production
– Manure Management
– Economic Viability
– Odor Control
![Page 3: Design, Construction and Implementation of a Pilot Scale Anaerobic Digester at the University of Missouri-Columbia’s Swine Teaching and Research Farm](https://reader036.fdocuments.us/reader036/viewer/2022070314/554da6b3b4c905ff7a8b4ad6/html5/thumbnails/3.jpg)
Purpose of Project
• Research will provide information for small to medium sized farms seeking:
– Viable energy alternatives
– Practical manure management practices
– Air quality improvements
![Page 4: Design, Construction and Implementation of a Pilot Scale Anaerobic Digester at the University of Missouri-Columbia’s Swine Teaching and Research Farm](https://reader036.fdocuments.us/reader036/viewer/2022070314/554da6b3b4c905ff7a8b4ad6/html5/thumbnails/4.jpg)
University of MO-Swine Farm
Located approx. 5 miles from campus
Consist of 2 barns-Research-Teaching
West - trailer courtEast- several homesSouth- University FarmNorth- Undeveloped land
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Construction Details
• Finishing Barns• Valve Control & Manhole• Dual Tank Design• Heat Exchanger• Gas Systems• Water Heaters• Control Panels
![Page 6: Design, Construction and Implementation of a Pilot Scale Anaerobic Digester at the University of Missouri-Columbia’s Swine Teaching and Research Farm](https://reader036.fdocuments.us/reader036/viewer/2022070314/554da6b3b4c905ff7a8b4ad6/html5/thumbnails/6.jpg)
Finishing barns
Chopper pump
Scraper system
Existing
Lagoon
Modified water heater
Back-up natural gas
heater
Positive displacement
pumpManhole
Mixing tank
Digester 2
Digester 1
Biogas Bladder
Condensate Trap
Shelter Flare
Valve Control Box
Radiant Heat
Pressure relief
Flow meter
Mixing tank
Iron Sponge
Heat Exchanger
Anaerobic Digester System
![Page 7: Design, Construction and Implementation of a Pilot Scale Anaerobic Digester at the University of Missouri-Columbia’s Swine Teaching and Research Farm](https://reader036.fdocuments.us/reader036/viewer/2022070314/554da6b3b4c905ff7a8b4ad6/html5/thumbnails/7.jpg)
Finishing barns
Finishing Barns
• 136’*42’ finishing barn• 85 Hogs per room (50-250 lbs.)• 1.1 gallon/day manure per hog• 8’ deep pit• Plug flow system
![Page 8: Design, Construction and Implementation of a Pilot Scale Anaerobic Digester at the University of Missouri-Columbia’s Swine Teaching and Research Farm](https://reader036.fdocuments.us/reader036/viewer/2022070314/554da6b3b4c905ff7a8b4ad6/html5/thumbnails/8.jpg)
Finishing barns
Chopper pump
Scraper system
Existing
Lagoon
Modified water heater
Back-up natural gas
heater
Positive displacement
pumpManhole
Mixing tank
Digester 2
Digester 1
Biogas Bladder
Condensate Trap
Shelter Flare
Valve Control Box
Radiant Heat
Pressure relief
Flow meter
Mixing tank
Iron Sponge
Heat Exchanger
Anaerobic Digester System
![Page 9: Design, Construction and Implementation of a Pilot Scale Anaerobic Digester at the University of Missouri-Columbia’s Swine Teaching and Research Farm](https://reader036.fdocuments.us/reader036/viewer/2022070314/554da6b3b4c905ff7a8b4ad6/html5/thumbnails/9.jpg)
Valve Control & Manhole
Chopper pump
Manhole
Valve Control Box
![Page 10: Design, Construction and Implementation of a Pilot Scale Anaerobic Digester at the University of Missouri-Columbia’s Swine Teaching and Research Farm](https://reader036.fdocuments.us/reader036/viewer/2022070314/554da6b3b4c905ff7a8b4ad6/html5/thumbnails/10.jpg)
Finishing barns
Chopper pump
Scraper system
Existing
Lagoon
Modified water heater
Back-up natural gas
heater
Positive displacement
pumpManhole
Mixing tank
Digester 2
Digester 1
Biogas Bladder
Condensate Trap
Shelter Flare
Valve Control Box
Radiant Heat
Pressure relief
Flow meter
Mixing tank
Iron Sponge
Heat Exchanger
Anaerobic Digester System
![Page 11: Design, Construction and Implementation of a Pilot Scale Anaerobic Digester at the University of Missouri-Columbia’s Swine Teaching and Research Farm](https://reader036.fdocuments.us/reader036/viewer/2022070314/554da6b3b4c905ff7a8b4ad6/html5/thumbnails/11.jpg)
Digester
• 3, 2500 gallon reinforced fiberglass tanks• Flexibility:
• Single stage two-stream parallel replication• Dual stage single-stream experiment
Positive displacement
pump
Digester 2
Digester 1
Heat Exchanger
Mixing tank
![Page 12: Design, Construction and Implementation of a Pilot Scale Anaerobic Digester at the University of Missouri-Columbia’s Swine Teaching and Research Farm](https://reader036.fdocuments.us/reader036/viewer/2022070314/554da6b3b4c905ff7a8b4ad6/html5/thumbnails/12.jpg)
Fiberglass Tanks
• Digester Tank– Reinforced fiberglass– 2500 gal– Heating tubes – Nozzle mixer– Anti-foaming sprayer
![Page 13: Design, Construction and Implementation of a Pilot Scale Anaerobic Digester at the University of Missouri-Columbia’s Swine Teaching and Research Farm](https://reader036.fdocuments.us/reader036/viewer/2022070314/554da6b3b4c905ff7a8b4ad6/html5/thumbnails/13.jpg)
Finishing barns
Chopper pump
Scraper system
Existing
Lagoon
Modified water heater
Back-up natural gas
heater
Positive displacement
pumpManhole
Mixing tank
Digester 2
Digester 1
Biogas Bladder
Condensate Trap
Shelter Flare
Valve Control Box
Radiant Heat
Pressure relief
Flow meter
Mixing tank
Iron Sponge
Heat Exchanger
Anaerobic Digester System
![Page 14: Design, Construction and Implementation of a Pilot Scale Anaerobic Digester at the University of Missouri-Columbia’s Swine Teaching and Research Farm](https://reader036.fdocuments.us/reader036/viewer/2022070314/554da6b3b4c905ff7a8b4ad6/html5/thumbnails/14.jpg)
Gas Systems
Iron Sponge
Biogas Blower
Iron Sponge Media
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Gas Bladder• Biogas rated plastic
• 12’*15’*5’ inflated
• Housed in wooden structure
• Weighted to maintain line pressure
![Page 16: Design, Construction and Implementation of a Pilot Scale Anaerobic Digester at the University of Missouri-Columbia’s Swine Teaching and Research Farm](https://reader036.fdocuments.us/reader036/viewer/2022070314/554da6b3b4c905ff7a8b4ad6/html5/thumbnails/16.jpg)
Finishing barns
Chopper pump
Scraper system
Existing
Lagoon
Modified water heater
Back-up natural gas
heater
Positive displacement
pumpManhole
Mixing tank
Digester 2
Digester 1
Biogas Bladder
Condensate Trap
Shelter Flare
Valve Control Box
Radiant Heat
Pressure relief
Flow meter
Mixing tank
Iron Sponge
Heat Exchanger
Anaerobic Digester System
![Page 17: Design, Construction and Implementation of a Pilot Scale Anaerobic Digester at the University of Missouri-Columbia’s Swine Teaching and Research Farm](https://reader036.fdocuments.us/reader036/viewer/2022070314/554da6b3b4c905ff7a8b4ad6/html5/thumbnails/17.jpg)
Water Heaters
Biogaswater heater
Back-up natural gas
heater
• 1 Hog produces 2000 BTU of methane per day
• 2000 BTU*170 hogs= 340,000 BTU/40000 = 8.5 hrs.
• Natural gas to supplement when needed
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Control System
![Page 19: Design, Construction and Implementation of a Pilot Scale Anaerobic Digester at the University of Missouri-Columbia’s Swine Teaching and Research Farm](https://reader036.fdocuments.us/reader036/viewer/2022070314/554da6b3b4c905ff7a8b4ad6/html5/thumbnails/19.jpg)
Control Panels
Control Panel w/ touch screen
VFD controllers on reverse side
![Page 20: Design, Construction and Implementation of a Pilot Scale Anaerobic Digester at the University of Missouri-Columbia’s Swine Teaching and Research Farm](https://reader036.fdocuments.us/reader036/viewer/2022070314/554da6b3b4c905ff7a8b4ad6/html5/thumbnails/20.jpg)
Greenhouse
![Page 21: Design, Construction and Implementation of a Pilot Scale Anaerobic Digester at the University of Missouri-Columbia’s Swine Teaching and Research Farm](https://reader036.fdocuments.us/reader036/viewer/2022070314/554da6b3b4c905ff7a8b4ad6/html5/thumbnails/21.jpg)
What was Learned
• Design/ Implementation:– Complex – Time Consuming
• Significant Consideration:– Barn manure capacity– Maintaining manure freshness/ solids
content– Project management
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Future Plans
• Currently– Awaiting startup (May 1, 2013)– Awaiting manure VSS test to determine loading
rate– Awaiting system test trails
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Future Plans
• Improved design efficiency of heat-exchanger• Effects of feedstock characteristics• Co-digestion• Feedstock pre- treatment on biogas
production• Characterizing greenhouse gas emissions from
untreated manure and AD- treated manure
![Page 24: Design, Construction and Implementation of a Pilot Scale Anaerobic Digester at the University of Missouri-Columbia’s Swine Teaching and Research Farm](https://reader036.fdocuments.us/reader036/viewer/2022070314/554da6b3b4c905ff7a8b4ad6/html5/thumbnails/24.jpg)
Summary
• Purpose of Project
• Project Design/Construction
• What was learned
• Future Plans
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Acknowledgements
MU- College of Agriculture, Food and Natural Resources
MU- Commercial Agriculture Program
Dr. Tim Safranski
Dr. Joe Zulovich
University Field Operations
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Questions?