11 4 Vermicomposting
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11 4 Vermicomposting

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11 4 Vermicomposting 11 4 Vermicomposting Presentation Transcript

  • Waste Management Term: Vermicomposting Website: http://www.ciwmb.ca.gov/Organics/Worms/
  • Vermicomposting
    • Using worms to make compost
  • Industrial Size
    • Movie: http://www.wormpower.net/worm-castings/worm-power-news.php
  • http://www.ciwmb.ca.gov/Organics/Worms/
    • Go to the Fact Sheet
    • What kinds of worms are used for composting?
    • What do worms need?
    • What do worms eat?
    • Where should you keep worms?
    • How do you harvest the compost?
  • Vermicomposting
    • Worms: Red Wigglers – not nightcrawlers or local earthworms
    • Environment –
      • Moist – not wet
      • Bedding
      • Temp between 55 – 77
      • Darkness
    • Eat - Food scraps – no meat or dairy
    • Harvest – Allow the worms to crawl up by only feeding on top layer. Harvest the bottom layers
  • Compost Research
    • What is the appropriate moisture level for compost?
    • What are the carbon ingredients
    • What are the nitrogen ingredients
    • What is the correct ratio of C to N?
    • How do you make a hot pile?
    • What is the difference between a hot pile and a cold pile?
  • Passive or Cold
    • No special requirements
    • Pile it up and let it sit
    • Add more material at any time
    • Takes 6 mos – 1 year
  • Active or Hot Compost
    • Fast or "active" composting can be completed in two to six weeks.
    • This method requires three key activities
      • 1) "aeration," by turning the compost pile,
      • 2) moisture
      • 3) the proper carbon to nitrogen (C:N) ratio
    • Raise the temperature to around 130 -140
  • Steps to hot compost
    • Build the pile
      • Layer brown & green – chopped up is best
      • Don’t add anything after it is built
      • Store until you have enough to build a pile
    • Turn every 3-5 days
      • Or when temp drops below 120
    • 4-5 weeks in summer
    • 6-8 weeks in fall
    • ? In winter
  • Today
    • Build a 3 stage pile
    • Make a sign to begin collecting wastes
    • Need volunteer to take a bucket to the cafeteria for lunch every day
    • Make a poster/sign to go with it
      • Why collecting
      • What to/not to add