Oklahoma Cooperative Extension Service Solid Waste Management (SWM) Composting in Schools

Transcription

1 Oklahoma Cooperative Extension Service Solid Waste Management (SWM) Composting in Schools Prepared by Lynn Malley, Assistant State Extension Specialist, SWM EE Expo February 3, 2017 This material is based upon work supported under a grant by the Utilities Programs, United States Department of Agriculture. Any opinions, findings, and conclusions or recommendations expressed in this material are solely the responsibility of the authors and do not necessarily represent the official views of the Utilities Programs. Oklahoma Cooperative Extension Service is an equal opportunity provider and employer.

2 What is Extension? Educators to educate the citizens in offices in all 77 OK counties - Generally Ag, Community/Family, 4-H based on the Stillwater campus - Specific specialties research and education Created over 100 years ago at land grant universities all over the US

3 What Is the Purpose of the Solid Waste Management Grant? Provide technical assistance to communities that are Small Rural Native American Other What does that mean? Partnering with these communities to improve SWM Building bridges among those interested in SWM Funded by USDA Rural Development

4 Featured Activity - Organics Waste Diversion from Landfills Hot topic nationally 20-40% of landfill materials are food waste and yard waste These produce higher amounts of methane gas Large parts of Oklahoma are food deserts We/schools can use the food scraps We/schools can compost the waste Schools can grow gardens

5 What is Composting? Natural decomposition of organic materials by microorganisms Insects Worms Bacteria Fungi, etc. Requires organic materials and some water May or may not require air

6 Compost Happens Or not contained Whether contained.

7 Compost Reduces Waste Between 20% and 40% of landfill content is organic waste.

8 Methods of Composting Bin, Tumbler, Chamber, or home made System Commercial Scale

9 Windrows at CommonWealth Gardens OKC

10 Static Compost Pile at the OKC Zoo

11 4 Bin System with Pallets

12 Pallet Bins from Growing a Greener World pisode225/

13 Compost Inputs and Tools Inputs Fruits and vegetables Straw Grass Clippings Leaves Tools Rake Shovel? Bin? worms

14 Compost Steps

15 High Carbon - Brown Dead Leaves Straw Paper

16 High Nitrogen - Green Produce Scraps Grass Clippings Coffee Grounds Manure

17 Organic Matter Great stuff!! Promotes microbial growth Improves soil tilth (workability) Promotes root development Improves soil aeration & drainage Improves water retention in sandy soils Lessens soil compaction Etc. Etc. Etc. Organic Matter Matter that comes from a onceliving organism Is capable of decay Is made up of organic compounds

18 Finished Compost The decomposed remnants of organic matter Soil Amendment Stable Dark Brown or Black Earthy Smell

19 Use of Compost Soil amendment lbs/100 sq. ft. At planting in garden In planting hole or trench Component of potting mix 30-50% of mix Mulching 2-3 thick Lawn Soil amendment before planting Top dress use up to ¼ per year

20 Reasons to Compost: Food Waste = Food for People, Animals, and Plants Ugly veggies Overripe crops Compost Advantages Good, local food for people in smaller, underserved areas Extra unusable food for animals Easily, locally made compost Less need for infrastructure More independence Interested?

21 Schools are opportune locations for composting Composting is a great teaching tool

22 Since We Are Talking about STEM Science Where does the school s food waste go, organic lawn waste? Trash > landfill > methane gas How else could the food and yard waste be used What happens when the compost feedstock breaks down How to make that breakdown happen slower or faster

23 Technology How does a landfill work How is it built What byproducts are produced What machinery is used to run a landfill How are computers used in managing modern landfills

24 Engineering How is a modern landfill built Why does there have to be a specific slope angle Why is nightly cover required What is the system of piping that runs through a landfill How does the leachate pond function What is a waste-to-energy landfill

25 Math nitrogen/carbon ratio materials needed to build a 3 x 3 or 4 x 4 bin differences in output of compost of the different sized bins Money saved by diverting food and leaves from the trash?

26 Wala! It s the cycle of life! Composting is a great tool for reconnecting kids to the earth they get to make it Growing things in soil with compost added is a great way to make a garden and grow food The food can be used in the cafeteria or sent home with the kids The waste from the food goes back into the compost pile

27 Resources OCES Lynn Malley nagement content/uploads/2015/06/composting-at- School-0307.pdf content/uploads/2013/06/cafeteria- Composting-Manual-for-printing.pdf

28 Master Composters The program Training coming for trainers in small towns around the state Based on the Master Gardener program Trainers will donate hours of training to others in their area The benefits Use of real food waste Production of a great growing medium for local gardens Schools Senior Centers Small Communities Production of richer soil for absorbing and holding water

29 Questions? Lynn Malley Assistant State Extension Specialist Solid Waste Management W