N-Viro International, Inc. is an environmental technology company specializing in the transformation of biosolids and organic waste into value-added products. Founded in the 1970s and headquartered in Tampa, Florida, the company has developed proprietary processes that convert wastewater sludge into a stabilized, nutrient-rich soil amendment while reducing pathogen content. Over the decades, N-Viro has positioned itself as a provider of sustainable waste‐to‐resource solutions for municipalities, wastewater treatment plants and industrial waste generators.
The company’s core offering, N-Viro Soil, is produced by blending dewatered biosolids with quicklime and certain non‐toxic additives, then subjecting the mixture to a controlled thermal conversion process. This method eliminates harmful bacteria and odors while preserving essential plant nutrients such as nitrogen, phosphorus and potassium. In addition to N-Viro Soil, the company markets N-Viro Fuel, a high‐energy product derived from blended biosolids and recycled paper that can be used as a substitute for traditional fuel sources in industrial boilers and furnaces.
N-Viro International serves a diverse geographic footprint that includes domestic projects across the United States and select international installations in Asia and Europe. Its clientele encompasses municipal authorities seeking environmentally compliant disposal methods, agricultural operators aiming to enrich soil quality, and industrial facilities pursuing alternative fuel options. The company’s technical team works closely with local operators to customize system design, manage permitting and provide ongoing operational support.
Under the leadership of a seasoned executive team with decades of experience in environmental engineering and waste management, N-Viro continues to invest in research and development. The company is focused on expanding its processing capacity, optimizing product performance and exploring new markets for its sustainable waste conversion technologies. This commitment to innovation aligns with growing global demand for circular economy solutions and resource recovery initiatives.
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