Design, Construction andImplementation of a Pilot ScaleAnaerobic Digester at the Universityof Missouri’s Swine Teaching an...
Purpose of Project• Establish a pilot scale, on-farm anaerobic digester– Potential Renewable Energy Production– Manure Man...
Purpose of Project• Research will provide information for small to mediumsized farms seeking:– Viable energy alternatives–...
University of MO-Swine FarmLocated approx. 5 milesfrom campusConsist of 2 barns-Research-TeachingWest - trailer courtEast-...
Construction Details• Finishing Barns• Valve Control & Manhole• Dual Tank Design• Heat Exchanger• Gas Systems• Water Heate...
Finishing barnsChopper pumpScrapersystemExistingLagoonModifiedwater heaterBack-up naturalgas heaterPositivedisplacementpum...
Finishing barnsFinishing Barns• 136’*42’ finishing barn• 85 Hogs per room (50-250 lbs.)• 1.1 gallon/day manure per hog• 8’...
Finishing barnsChopper pumpScrapersystemExistingLagoonModifiedwater heaterBack-up naturalgas heaterPositivedisplacementpum...
Valve Control & ManholeChopper pumpManholeValve Control Box
Finishing barnsChopper pumpScrapersystemExistingLagoonModifiedwater heaterBack-up naturalgas heaterPositivedisplacementpum...
Digester• 3, 2500 gallon reinforced fiberglass tanks• Flexibility:• Single stage two-stream parallel replication• Dual sta...
Fiberglass Tanks• Digester Tank– Reinforced fiberglass– 2500 gal– Heating tubes– Nozzle mixer– Anti-foaming sprayer
Finishing barnsChopper pumpScrapersystemExistingLagoonModifiedwater heaterBack-up naturalgas heaterPositivedisplacementpum...
Gas SystemsIronSpongeBiogasBlowerIron SpongeMedia
Gas Bladder•Biogas rated plastic•12’*15’*5’ inflated•Housed in woodenstructure•Weighted to maintain linepressure
Finishing barnsChopper pumpScrapersystemExistingLagoonModifiedwater heaterBack-up naturalgas heaterPositivedisplacementpum...
Water HeatersBiogaswater heaterBack-up naturalgas heater•1 Hog produces 2000 BTU of methane per day•2000 BTU*170 hogs= 340...
Control System
Control PanelsControl Panel w/ touch screenVFD controllers on reverseside
Greenhouse
What was Learned• Design/ Implementation:–Complex–Time Consuming• Significant Consideration:–Barn manure capacity–Maintain...
Future Plans• Currently– Awaiting startup (May 1, 2013)– Awaiting manure VSS test to determine loadingrate– Awaiting syste...
Future Plans• Improved design efficiency of heat-exchanger• Effects of feedstock characteristics• Co-digestion• Feedstock ...
Summary• Purpose of Project• Project Design/Construction• What was learned• Future Plans
AcknowledgementsMU- College of Agriculture, Food and Natural ResourcesMU- Commercial Agriculture ProgramDr. Tim SafranskiD...
Questions?
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Design, Construction and Implementation of a Pilot Scale Anaerobic Digester at the University of Missouri-Columbia’s Swine Teaching and Research Farm

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Animal manure is often utilized by the American agriculture industry as fertilizer without considering the potential energy production. It is well established that on-farm anaerobic digestion (AD) can be effective in providing energy, reducing greenhouse gas emissions, and controlling air and water pollutions. Knowledge of the ADs on biogas production, digested and stored manure nutrients, and air emissions must reach parties of interest. A modular, pilot-scale, mesophilic AD system is being installed for the new swine finishing facility at University of Missouri-Columbia Research Farm.

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Design, Construction and Implementation of a Pilot Scale Anaerobic Digester at the University of Missouri-Columbia’s Swine Teaching and Research Farm

  1. 1. Design, Construction andImplementation of a Pilot ScaleAnaerobic Digester at the Universityof Missouri’s Swine Teaching andResearch FarmBy:Brandon HarveyResearch Assistant, Agricultural Systems ManagementTeng LimAssistant Professor, Agricultural System ManagementKevin RohrerEngineer, Martin Machinery
  2. 2. Purpose of Project• Establish a pilot scale, on-farm anaerobic digester– Potential Renewable Energy Production– Manure Management– Economic Viability– Odor Control
  3. 3. Purpose of Project• Research will provide information for small to mediumsized farms seeking:– Viable energy alternatives– Practical manure management practices– Air quality improvements
  4. 4. University of MO-Swine FarmLocated approx. 5 milesfrom campusConsist of 2 barns-Research-TeachingWest - trailer courtEast- several homesSouth- University FarmNorth- Undeveloped land
  5. 5. Construction Details• Finishing Barns• Valve Control & Manhole• Dual Tank Design• Heat Exchanger• Gas Systems• Water Heaters• Control Panels
  6. 6. Finishing barnsChopper pumpScrapersystemExistingLagoonModifiedwater heaterBack-up naturalgas heaterPositivedisplacementpumpManholeMixingtankDigester2Digester1BiogasBladderCondensateTrapShelterFlareValve Control BoxRadiant HeatPressurereliefFlow meterMixingtankIronSpongeHeatExchangerAnaerobic Digester System
  7. 7. Finishing barnsFinishing 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
  8. 8. Finishing barnsChopper pumpScrapersystemExistingLagoonModifiedwater heaterBack-up naturalgas heaterPositivedisplacementpumpManholeMixingtankDigester2Digester1BiogasBladderCondensateTrapShelterFlareValve Control BoxRadiant HeatPressurereliefFlow meterMixingtankIronSpongeHeatExchangerAnaerobic Digester System
  9. 9. Valve Control & ManholeChopper pumpManholeValve Control Box
  10. 10. Finishing barnsChopper pumpScrapersystemExistingLagoonModifiedwater heaterBack-up naturalgas heaterPositivedisplacementpumpManholeMixingtankDigester2Digester1BiogasBladderCondensateTrapShelterFlareValve Control BoxRadiant HeatPressurereliefFlow meterMixingtankIronSpongeHeatExchangerAnaerobic Digester System
  11. 11. Digester• 3, 2500 gallon reinforced fiberglass tanks• Flexibility:• Single stage two-stream parallel replication• Dual stage single-stream experimentPositivedisplacementpumpDigester2Digester1HeatExchangerMixingtank
  12. 12. Fiberglass Tanks• Digester Tank– Reinforced fiberglass– 2500 gal– Heating tubes– Nozzle mixer– Anti-foaming sprayer
  13. 13. Finishing barnsChopper pumpScrapersystemExistingLagoonModifiedwater heaterBack-up naturalgas heaterPositivedisplacementpumpManholeMixingtankDigester2Digester1BiogasBladderCondensateTrapShelterFlareValve Control BoxRadiant HeatPressurereliefFlow meterMixingtankIronSpongeHeatExchangerAnaerobic Digester System
  14. 14. Gas SystemsIronSpongeBiogasBlowerIron SpongeMedia
  15. 15. Gas Bladder•Biogas rated plastic•12’*15’*5’ inflated•Housed in woodenstructure•Weighted to maintain linepressure
  16. 16. Finishing barnsChopper pumpScrapersystemExistingLagoonModifiedwater heaterBack-up naturalgas heaterPositivedisplacementpumpManholeMixingtankDigester2Digester1BiogasBladderCondensateTrapShelterFlareValve Control BoxRadiant HeatPressurereliefFlow meterMixingtankIronSpongeHeatExchangerAnaerobic Digester System
  17. 17. Water HeatersBiogaswater heaterBack-up naturalgas 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
  18. 18. Control System
  19. 19. Control PanelsControl Panel w/ touch screenVFD controllers on reverseside
  20. 20. Greenhouse
  21. 21. What was Learned• Design/ Implementation:–Complex–Time Consuming• Significant Consideration:–Barn manure capacity–Maintaining manure freshness/ solidscontent–Project management
  22. 22. Future Plans• Currently– Awaiting startup (May 1, 2013)– Awaiting manure VSS test to determine loadingrate– Awaiting system test trails
  23. 23. Future Plans• Improved design efficiency of heat-exchanger• Effects of feedstock characteristics• Co-digestion• Feedstock pre- treatment on biogasproduction• Characterizing greenhouse gas emissions fromuntreated manure and AD- treated manure
  24. 24. Summary• Purpose of Project• Project Design/Construction• What was learned• Future Plans
  25. 25. AcknowledgementsMU- College of Agriculture, Food and Natural ResourcesMU- Commercial Agriculture ProgramDr. Tim SafranskiDr. Joe ZulovichUniversity Field Operations
  26. 26. Questions?

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