Compost Aeration Systems

The ECS aeration systems use centralized stations to provide metabolic oxygen and cooling for the aerobic composting process. One or more variable-speed fans generate the airflow necessary, while aeration dampers modulate the amount and direction of airflow to each separately controlled zone.

Single fan supplying aeration to multiple zones

Each fan is connected to a variable frequency drive (VFD) so that the CompTroller™ can automatically regulate the speed of the fans. The CompTroller constantly adjusts the speed of the fans to maintain pressures in the supply and exhaust plenums. Dampers with electric actuators are used to control the amount of air drawn through each compost pile. The CompTroller™ determines the amount that a damper is open based on readings from temperature probes in the composting material.

Dampers controlling the amount and direction of aeration in this reversing system

If the temperatures are above the target set point, the damper will be opened, drawing more air through the pile to cool it. If the temperatures are below the set point, the damper will be closed to draw less air. While the compost batch is running under automatic control, the damper will always remain open a minimum amount in order to maintain minimum oxygen levels in the pile.

Main aeration plenum supplying air to multiple damper controlled zones in this negatively aerated CompDog™ system.

Single fan supplying aeration to multiple individually controlled zones in this reversing in-vessel system.

Resources

• Pro Forma Design Services (PDF)
• Products and Services Brochure (PDF)

Let us help figure out the best solution for you.