11 4 Vermicomposting

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11 4 Vermicomposting

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

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