George M. MacDonald Director Division of Sustainability MAINE - PowerPoint PPT Presentation

Food Scrap Composting Success George M. MacDonald Director Division of Sustainability MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep Protecting Maine’s Air, Land and Water Protecting Maine’s Air, Land and Water

Food Recovery MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep

What is Composting? “A biological process that transforms raw organic materials into a nutrient rich, biologically-stable soil additive suitable for plant and crop use”. Compost MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep

Optimal Ranges for Composting • C:N Ratio - 20:1 to 30:1 • % Moisture – 50% to 65% • Oxygen concentration – 5% to 10% • pH - 5.5 to 8.2 (acceptable) • Particle size — ¼ inch to 3 inches (largest dimension) • Temperature — Thermophilic (110 o to 160 o F) MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep

3 Bin System MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep

3 Bin Facility MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep

Making the “Bed” Start with a 18”-24” thick bed of fresh bedded horse manure. MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep

THE EARTH TUB – ON -SITE COMMERCIAL COMPOSTING MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep

MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep

“Green Mountain - Earth Flow”- UMO 1 ton of Food/day!! MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep

Compost System MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep

www.maine.gov/dep MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION www.maine.gov/dep