North America’s largest biogas company puts renewables to work. For example: Our patented two-stage “Linear Vortex” digesters process more industrial and farm wastes globally than any other company, or design. Largely due to unparalleled performance: DVO’s anaerobic digester (AD) systems greatly reduce odors, are cost-effective, scalable, operate automatically and require low maintenance. DVO is the U.S. market leader for AD and environmental engineering, providing reliable, proven solutions and services to industry and agriculture for over 27 years.