McGill composting process description
McGill composting facilities are designed to support the proprietary process responsible for the accelerated biodegradation of target compounds.
The modular design and rapid throughput provide a flexible, adaptable and cost-effective way of turning all kinds of organic waste into premium compost products.
Optimal moisture, porosity, and carbon-to-nitrogen ratio are just some of the goals of the blending process. Specific formulations are based on the volumes and types of feedstocks processed and depend on their physical and bio-chemical characteristics.
Primary processing and curing
McGill utilizes a proprietary modification of the aerated static pile composting process developed at Rutgers University in the 1970s.
Computerized-control of the air delivery and extraction system optimizes composting conditions by maintaining ideal temperatures for the specific microbes responsible for biodegradation.
Tight control and automated monitoring of the processing environment reduces the time required to meet regulatory compliance for pathogen kill. This, in turn, provides cost-cutting, rapid throughput while delivering high quality compost products.
Once time and temperature goals have been met, the material is classified as a product and no longer regulated. This “fresh” compost has some market value, primarily in agriculture. However, most markets require a more mature product.
Real-time and historic data for each processing bay can be viewed on the computer screen and exported as spreadsheets and graphic visualizations for easy archiving and compliance.
Process flexibility goes beyond compost production
Once pathogen and vector requirements are met, the system can be optimized to meet various requirements and process goals. Parameters such as degradation rate, moisture reduction, quality, output volumes, cost, etc. can all be adjusted to meet the specific goals of the facility owner.
At most McGill facilities, the process is optimized for high-quality compost production. But a facility might also be designed and managed for biological drying (bio-drying) as a cost-effective alternative to conventional sludge dryers. Another site-specific goal might be moisture and volume reduction for a special material that needed to be landfilled rather than recycled.
McGill composting and biological treatment (bioremediation) facilities are designed for biofiltration of air from inside buildings and encapsulated processing bays. Air is extracted from the blending and processing areas of the building and treated before release to the atmosphere. Depending on location and design preferences for client-owned facilities, air extraction and biofiltration can be added to indoor off-loading, curing and screening zones, as well.
Can we build one for you?
McGill will design, build and operate your system for composting or biological sludge drying (bio-dryer) and biomass reduction. We also license our technologies. Learn more about our package plants and technology applications.