Advanced Composting

Site Construction & Operation VA Dept of Transportation Roadkill Mortality Management

This system had to be able to handle huge variances in mortalities & these requirements:  Proven Composting

Performance  Flexible Loading Rates  Mesh with existing equipment  Sustainability: Operationally &

Environmentally Safe  Simple to operate  Odor Control, Leachate Control  Overall Process Control  Scalable to handle large volumes

of mortalities VA Department of Transportation: Roadkill Mortality

Virginia Department of Transportation Roadkill Composting Installation

Construction begins on site, with ACT designed bins being set onto concrete working pad

ACT bins placed and Forced-Air supply system being installed

Each bin is plumbed for aeration and leachate collection

Drains inside the bins collect the excess leachate

Connected to an underground leachate collection system where all the leachate is captured, treated, and returned to the bins to be added manually for optimum moisture levels

Built with water tight doors to eliminate leachate leakage

A 1,000 gallon septic tank was installed to hold and treat the leachate. A 30� curb wall and roof were added for easy access.

Clean-outs installed under the concrete pad facilitate easy drainage maintenance

Aeration is delivered via stainless steel tubing on the bin floor

Very small aeration holes provide pressurized air

Aeration is provided by a central blower

Simple, forced-air control panel

Construction now complete, with covers for rainwater protection and walkways for access and daily operation

Fresh roadkill was delivered to site and dumped onto sawdust ready for processing

ACT composting bins loaded with a skid-steer loader; with minimal cover between layers

Each animal covered with a mix of sawdust and poultry litter until a bed was formed for the next animals

Multiple layers were stacked near the rear, forming a 5 foot tall terrace

Bin design allows for standard skid-steer road equipment to move carcasses

Each animal was loaded and covered with mix

Adding leachate to the pile produced pathogen killing temperature performance

Monday’s Temperature 162 degrees

Amazing performance! Only 38 days after loading nearly 10,000 lbs of deer, this material is still 150 to 160 degrees and significantly decomposed

Bin is fully composted, and ready to be moved out.

Folks, you are looking where the deer were just 38 days before!

Clean, odor-free compost, 38 days after loading, this material is still 145 to 150 degrees, complete pathogen-kill, last stage decomposition

Major Success! All criteria met!  Proven Composting



"The more I learned about ACT, the more I saw their concept fitting our way of doing business.

We needed to handle large volumes of road-­‐kill during rut, and higher composting temperatures with no turning required to provide aeration; with no moving parts to breakdown, and a clean, closed-­‐loop leachate control system. After one visit to a NC farm, watching them load sows one on top of the other, I was convinced it would work for us. Odor control was extremely critical, and everyone notices the lack of offensive odors. We've looked at other systems but for us, ACT's forced air technology is by far the most applicable to handling our road-­‐kill problems. Now we can focus on the implementation and logistics, because we know their system will handle whatever we throw at it.”



Jim White, State of VA, DOT

Performance  Flexible Loading Rates  Mesh with existing equipment  Sustainability: Operationally &

Environmentally Safe  Simple to operate  Odor Control, Leachate Control  Overall Process Control  Scalable to handle large volumes

of mortalities

Some installations take on a different design based on customer need

Another site example, 3-bin w/ covered work area

Tell me more….

We would sure like to hear from you to better understand your waste management challenges and discuss even more ways the Advanced Composting Technology systems could provide even more benefits for your specific application.

Be sure to send us a message from any of the action links at our website, or just give us a call at 828-­‐665-­‐8600