Hamilton-White Composting Technologies (HWC) develops and deploys advanced in-vessel aerobic composting systems engineered for large-scale hog, dairy, cattle, and human-waste processing operations. The system eliminates waste lagoons, reduces methane and ammonia emissions, neutralizes harmful pathogens, and converts high-moisture manure and effluent into a stable, nutrient-rich compost that can be reused on cropland, feedlot environments, or sold as a soil amendment.
A key differentiator is that HWC can accept and process high-liquid effluent directly from hog and dairy barns, including flush-type manure systems with moisture contents approaching ~80%, without requiring lagoons, settling ponds, mechanical separators, or supplemental drying equipment. This replaces one of the most expensive and environmentally risky components of modern livestock management. By converting raw slurry directly into stable compost, producers eliminate lagoon construction and maintenance costs, reduce odor and airborne pathogen spread, eliminate runoff pollution risk, and dramatically improve regulatory and community relations.
The system’s flexibility extends beyond livestock. HWC has demonstrated — through field operation and laboratory validation — that it can also process human waste streams using the same thermophilic composting methodology. The resulting compost is fully stabilized and non-toxic, free of harmful pathogens including fecal bacteria. Laboratory challenge testing confirms that the finished compost is so stable that E. coli cannot be reintroduced and survive, meaning the end-product is biologically closed and environmentally safe for storage or application.
Because the compost is thoroughly stabilized, there is no dangerous leachate, eliminating another major environmental liability associated with traditional waste handling.
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Strategic Defense & Government Application
On U.S. and allied military installations, the HWC system can replace or significantly reduce landfill hauling, sewage treatment burden, and waste disposal risk by composting multiple on-base waste streams in a single controlled system, including:
• Mess hall food waste
• All landscaping greens (grass, leaves, brush, yard debris)
• Cardboard and paper products
• Treated human waste streams
This unified handling capability reduces logistics footprint, improves base resilience and sustainability compliance, cuts emissions, and produces stable compost usable for erosion control, landscaping, training ground rehabilitation, or long-term storage.
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The technology originates from U.S. Patent #5405780 (1995) and has been significantly advanced through decades of engineering refinement. HWC uses a closed-loop, forced-aeration system that precisely controls oxygen, heat, moisture, and carbon-to-nitrogen ratios to maintain thermophilic temperatures proven to neutralize PRRS and other viral pathogens in hog operations, leading to demonstrably improved herd health outcomes.
In addition to health and environmental advantages, HWC systems enable carbon-credit generation by preventing methane formation and stabilizing carbon in the composted material — creating new recurring revenue streams while improving sustainability and regulatory performance profiles.
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Industries & Use Cases
• Hog production facilities
• Dairy operations
• Cattle feedlots
• Municipal wastewater authorities
• Human waste processing in remote, rural, or sensitive regions
• U.S. and allied military bases (food waste, greens, cardboard, human waste)
• Carbon credit and sustainability markets
• Integrated agricultural enterprises
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HWC’s mission is to deliver a scalable, economically sound, and scientifically validated waste conversion solution that improves operational efficiency, protects the environment, strengthens herd and community health, and delivers measurable climate benefits.