forced air vs. static pile

Keith Warren 828-230-1729

kwarren@advancedcomposting.com

President

Forced Air Composting

VS.

Traditional Static Pile Composting

The Problem (continued)

• Farmers have tried static pile composting in the past but with little success

• Reasons why it didn’t work

1. Mostly an anaerobic process

2. Difficult and time consuming to manage

3. Powerful unpleasant odor

4. Takes to long to achieve final product

STATIC PILE COMPOSTING…“BEEN THERE, DONE THAT, NO THANKS”

“Above Ground Rotting chambers”

Forced Aeration vs. Static Pile Comparison

Animal Mortality: 240,000lbs/yearBin size: 9.5’W x 12.0’L x 5.5’HMortality Capacity/bin: 5,000lbs 3,200lbs Cycle Time 1st Stage: 45 days 120 daysCycle Time 2nd Stage: 45 days 120 daysCycle Time 3rd Stage: 0 days 60 days# of 1st Stage Bins: 8 bins 18 bins# of 2nd Stage Bins: 4 bins 16 bins# of 3rd Stage Bins: dry stack + 14 bins

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Total Number of Bins: 12 bins 48 bins

Forced Air Static Pile

ADVANTAGES OF FORCED AERATION OVER

STATIC PILE• NO FUEL EVER NEEDED• CONTINUOUS AERATION • NO TURNING REQUIRED TO AERATE• LEACHATE CAPTURED & RECYCLED• TEMPS ABOVE 150°F for 10+ DAYS• SUPERIOR PATHOGEN KILL• HALF THE STRUCTURE REQUIRED• HALF THE PROCESS TIME REQUIRED• CONCRETE BIN DESIGN FOR

DURABILITY• NONE OF THE MESS, SMELL, DREAD…

• Advantages (Continued)

• Very Little Odor• Viable Product Produced• Composting process accelerated with

forced aeration (75% after 3 wks.)• Employee satisfaction• Utilizes Coastal Bermuda grass, corn and

soy bean stubble• $150.00 Utility costs/month

Competitive Analysis

Whole Hog Composting at Little Creek Hog Farm Ayden North Carolina

16 Bin Facility w/ Storage 10,000lbs mortality per bin “Capped and cooking”

150°F Processing Temps Forced Aeration Floor “Storage for Land 28 days application”