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BSF_WasteManagement_FinalPresentation

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BSF_WasteManagement_FinalPresentation

  1. 1. BLACK SOLDIER FLY (BSF) BIOCONVERSION: WASTE MANAGEMENT Montaña de Luz KEVIN EVERSON – Project Organizer THOMAS GULLO – Construction Specialist MARISSA LAUER – Design Coordinator April 13, 2016
  2. 2. Overview of Presentation  Problem Statement – Montaña de Luz (MdL) and Waste Management  Background – Black Soldier Fly (BSF) Bioconversion  Objectives  Final Bin Design  Deliverables  Project Schedule  Budget  Limitations  Sustainability  Retrospective Thoughts  Recommendations for MdL  Acknowledgements
  3. 3. Problem Statement– MdL and Waste Management  Previously used a small-scale BSF system for some waste  Unpleasant odors persisted  Needed larger, improved system with proper drainage
  4. 4. A visual aid…
  5. 5. Background– Black Soldier Fly Bioconversion
  6. 6. Black Soldier Flies  Native to many places around the world and can adapt to various climates  Larval form eats food waste, consume ~95% of food waste  Larvae live long, feed for ~2 weeks  Great food source for livestock  Adult form has no mouth  Adults do not live long, about 5-8 days  Main goal for adults is to reproduce
  7. 7. Applications  Reduces food waste  Reduces animal feed costs  Improves fertilization
  8. 8. Bin Design Pupae Collector Pupae Collector Liquid/Frass Collector Lid Width – 5' Height - 1'
  9. 9. 5’ 1’ 2.14’ Dimensions (Not to scale) 35˚ Note – 2’ depth
  10. 10. Drainage component Final Design Waste bin Pupae exit ramps Fly entry hole Egg traps Pupae collection bins
  11. 11. Drainage Component Consisted of:  1 sheet of galvanized mesh  2 sheets of fly screen  1 sheet of heavy plastic
  12. 12. BSF Entry Holes and Egg Traps  Incorporated entry holes and egg traps to maintain BSFL presence in system  Designed to attract female black soldier flies
  13. 13. Pros and Cons Pros:  Efficient larvae collection  Large, robust size and design  Sustains ~37 lbs. of food waste per day  Proper drainage  Odor-reducing (aerobic)  Easy to clean Cons:  Wood may decompose over time  May attract other insects  Larvae may fall through system
  14. 14. Deliverables  One full size BSF composting system  Manual for maintenance and troubleshooting
  15. 15. Project Schedule  Monday, 3/14  Constructed the walls of the bin using wood panels and brackets  Cut the lid of the bin from a wooden panel  Tuesday, 3/15  Continued construction, including the frame below the bin and holes on each ramp  Applied layers of Maderol and caulk to the walls, lid, and edges of the bin  Wednesday, 3/16  Finalized construction, applied polyurethane, connected PVC pipes and elbows, and connected the lid with hinges
  16. 16.  Thursday, 3/17  Moved the system into the chicken coop, added food waste and larvae  Checked on the system intermittently throughout the day  Friday, 3/18  Cleaned the system to rid it of the ant infestations  Added another layer of fly screen to prevent larvae falling through the system  Created a system to prevent further ant infestations  Saturday, 3/19 - Sunday, 3/20  Observed system in action, ensured that bleach buckets still have water Project Schedule, continued
  17. 17. Budget Item Quantity Expected Price Actual Price OSB Panels (4’x8’ panels) 4 $32.45 $121.95 Weather treated lumber (2’’x4’’ panels) ~ 16 feet $14.94 $18.97 Buckets 4 $11.88 $20.21 Wood Treatment 1 gallon N/A $14.80 Polyurethane 3 spray cans $38.84 $19.22 Other components - $149.05 $101.13 TOTAL - $247.16 $297.25
  18. 18. Design Limitations Pre-Trip  Inability to transport certain items due to plane restrictions  Availability and compatibility of hardware near MdL  Budget necessitates compromise  Labor intensive
  19. 19. Design Limitations During Construction Problem Solution Straight-edge cutting with power saw Steady hands, patience, and practice Obtaining the correct size drill spade and PVC elbow for pupae chutes Trip to the hardware store Attaching the PVC elbows to the bin Used drill spade, sand paper, and silicone caulk Obtaining BSFL Searched through waste using trowels, collected larvae Ant infestation Placed bleach buckets under each leg with a brick and filled with water BSFL falling through mesh Added additional fly screen to bottom of bin
  20. 20. Eliminating Ants and Preventing Infestations  Emptied and rinsed out bin  Added bleach buckets  Sprayed each leg with Raid
  21. 21. Sustainability  Requires little maintenance  Maderol and Polyurethane prevent the wood from rotting  System does not require mixing  Easy to clean  Low budget (~$300)  Diverts food waste back into orphanage production  Animal feed  Compost for fruit trees
  22. 22. Recommendations for MdL  Add food waste daily, including meat (monitor waste levels closely at first)  Monitor larvae presence/absence  Dump harvest buckets daily for animal feed  Clean out unwanted trash as needed (bones, bags etc.)  Fill bleach buckets with water to prevent ant infestations
  23. 23. Retrospective Thoughts  More thorough research on food waste amounts  Consideration of ants and other insects  More precise calculations for sizes (too much material purchased)  More communication with MdL before trip
  24. 24. Summary– Waste Management with Black Soldier Flies Benefits:  Lower feed cost  Reduce food waste  Reduce impact on environment  More compost available  Endures for ~56 people (~37 lbs. of food waste per day) Costs:  Approximately $300
  25. 25. Acknowledgements Thank you Dr. Edgar Casale, Isa Fernandez-Puentes, Ruth DeYoe, Dr. Chris Ratcliff, Jorge Vallecillo, OSU teams and the entire staff and children at Montaña de Luz!

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