Setting Up An AD Project: Lucy Lewis, BiogenGreenfinch


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Bioenergy West Midlands
Anaerobic Digestion Event and Site Visit
17th March 2009

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Setting Up An AD Project: Lucy Lewis, BiogenGreenfinch

  1. 1. Setting Up an Anaerobic Digestion Project Lucy Lewis Innovation Manager 17th March 2009
  2. 2. Presentation Agenda •BiogenGreenfinch •Basics of anaerobic digestion •Applications of anaerobic digestion technology •Where to start & what needs to be addressed;  objectives  feedstock  biogas utilisation  digestate utilisation  planning  permitting  plant design & technology provider
  3. 3. BiogenGreenfinch • Bringing together the expertise of BIOGEN – UK’s leading AD operator with Greenfinch – UK’s leading AD technology provider • British, family business with 30+ years of experience within the AD industry • Team of 47 people based at either Milton Ernest and Ludlow • Capability and capacity to deliver a fully integrated AD solution to the agricultural, food, waste and water industries and to local authorities • Responsible for the development of 14 plants to date throughout the UK
  4. 4. Anaerobic digestion: a natural biological process Biogas Biomass Biofertiliser 37oC
  5. 5. Biomass for AD Livestock Manure Energy Crops Food Waste Sewage Sludge Glycerol
  6. 6. Heat 85% Biogas 60% CH4 Boiler 40% CO2 15% Losses Electricity 38% Biogas 47% Heat CHP Losses 15% Biomethane Biogas Upgrade CO2, H2S, H2O
  7. 7. Biogas CH4 CO2 Biomass Biofertiliser AD (N, P, K, C) (N, P, K,C)
  8. 8. Application of AD Manure Energy Crops Sewage Biodegradable Sludge Waste Reduce Improve Diversion Renewable Odour Nutrient from Energy Management Landfill Production
  9. 9. Biogas Plant in Kerala
  10. 10. Ryegrass Biogas in Shropshire
  11. 11. Sewage Sludge Digester
  12. 12. Co-Operative Biogas Plant in Denmark
  13. 13. Two types of AD plants developing On-farm Plant  manure  farm waste  energy crops Commercial Plant  municipal food waste  industrial food waste
  14. 14. What needs to be addressed? •Project Objectives •Feedstock •Biogas Utilisation •Digestate Utilisation •Planning •Permitting •Plant design & technology provider •Finance •Plant operation
  15. 15. What are your project objectives? •Make money •Diversification •Enhance existing slurry management •Import nutrients •Energy production •Self sufficiency •Green credentials
  16. 16. On-farm biogas plants Southwest Scotland
  17. 17. Feedstock •Type & quantity of feedstock?  On farm wastes & products  slurry- how long are animal housed?  what are the animals bedded on?  energy crops- do you have sufficient ground to grow in addition to animal feed?  what is the cost of crop production?  Imported feedstocks  ABP?  availability & seasonality?  feedstock guarantee & contract?  cost or gate fee?
  18. 18. Biogas Utilisation •CHP  Electricity- used on site or exported to the grid? Price per MWh?  Heat- is their a use on site or could it be exported? Price per MWh?  Tri-generation- production of cooling using surplus heat  Connection to the national grid- contact DNO. •Upgrade to biomethane  connection to gas grid - contract for biomethane, price per MWh  use as a vehicle fuel
  19. 19. Digestate Utilisation •Where will the digestate be utilised?  Is there enough land locally?  How much will the haulage cost?  When will the digestate be applied?  What storage is required?  Is a permit required for its application to land?  What cost is offset through less requirement for imported fertilisers?
  20. 20. Process Design Feedstock Process Digestate Energy
  21. 21. Plant Design & Technology Providers •Plant design  Tank design  shape, material  Mixing system  mechanical, gas, liquid recirculation  Heating  external / internal  Digester feeding & discharge  pump, auger, gravity  Gas collection •Budget costs •Tendering process
  22. 22. Planning •Will you get planning permission?  AONB, Greenbelt? •Where should you apply to for planning permission?  County Planning Authority  Local Planning Authority •What should be considered?  Odour,  noise,  vehicle movements,  proximity to dwellings,  aesthetic appearance, etc
  23. 23. Permitting •Animal Health Agency •Environment Agency •Planning Authority •Ofgem
  24. 24. Finance •Self finance •Bank loans •Joint venture
  25. 25. Plant operation & maintenance •Operate with current labour units •Employ additional labour units •Contract our specialist maintenance •Contract out plant operation & maintenance
  26. 26. Conclusion •Is the project viable & does it meet your objectives? •Plan carefully •Do not under estimate the project planning time
  27. 27. Thank you