Compost Systems


Through the years, intensive agricultural, urban development, and poor environmental practices have altered soils over the entire earth.  In many areas, organic and humus levels have declined by greater than 90%, microbial populations (bacteria and fungi) have become unbalanced, lower porosity has negatively impacted moisture retention, alkaline seeps have become common and/or have increased in extent and fertile topsoil has almost disappeared in some agricultural areas of the world. 

Topsoils that were once rich in organic material and microbial life, that made plant growth self-sustaining, have been turned into almost sterile, inorganic substances that require large inputs of chemicals or tillage energy for food and feed production.  While intensive agriculture has increased average yields and resulted in increased food production on a global scale, the raw material and energy inputs required for this increased production have increased significantly and make current food production and delivery methods highly subject to changes in global energy prices – particularly petroleum prices. 

In addition to impacts on food production methods and costs, the above changes in soil properties have resulted in soils with reduced water holding capacity that leads to greater erosion, higher incidences of flooding, and lower rates of recharging of the groundwater supply.  The only means of remediating these undesirable properties is by the addition of organic matter and microorganisms in an attempt to restore soils to a sustainable natural equilibrium of these fundamental characteristics. 

A high-quality compost is one of the very few materials that can serve as a soil amendment to enable this restorative process.  And high-quality compost is possible only under processing conditions that maintain the following conditions throughout the process:

  • A carbon-nitrogen ratio in the raw material supporting optimal microbial oxidation of organic material.
  • Oxygen levels uniformly established and controlled throughout the bulk volume of composting material.
  • Process temperatures maintained within a desirable range throughout the composting period.
  • Moisture levels that allow optimal nutrient and waste transfer of the microbial oxidative processes.

Relative to compost facilities, BacTee Systems provides process evaluation and selection services, facility conceptualization, and component selection and integration support to owners or engineering representatives.  In addition, BacTee Systems has developed and supplies forced aeration systems and control strategies that are adaptable to virtually all types of compost processes. 

Comprehensive odor control is essential to attaining neighborhood acceptance of a compost facility.  BacTee’s expertise in odor and VOC control systems is a part of every compost facility developed with the involvement of BacTee professionals.  BacTee Systems is also frequently invited to supply the odor and VOC control system and key aeration components VOC control system and key aeration components to facilities developed by other vendors or designers. 

Compost processes for which BacTee has developed and provides aeration systems include:

  • Aerated uncovered windrows
  • Aerated covered windrows
  • Aerated static piles
  • Aerated agitated tunnels
  • Aerated in-vessel containers
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