• Where Is It?

    Environmental

    Capturing natural methane emissions reduces GHGs, protecting our natural resources.

  • Poultry

    Poultry, Hog and Dairy Farms

    Maximize nutrient management, odor and pathogen destruction (including e-coli and salmonella).

  • Commercial-Industrial

    Food Waste / Industrial / "Mixed" Digesters

    Co-digestion optimizes performance.

  • Scalable

    Scalable

    From smaller farming operations
    to the world's largest.

  • Biosolids

    Biosolids

    Quality fertilizers, animal bedding (for extreme cow comfort), peat-moss amendments.

  • Poultry2

    Renewable Power Generation

    Electricity, CNG/RNG, steam for industrial processes, etc.

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DVO's patented two-stage "Mixed Plug-FlowTM" digesters process more farm and industrial wastes in North America 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 agricultural and industrial solutions and services for over 22 years.

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Digester Products – View More »

  • Biogas to Electricity

    Methane is collected from the two stages of the AD vessel and utilized for fuel in combined heat and power (CHP) gensets. Typically power is sold at a higher rate than purchased, and much more is produced than consumed.

  • Biosolids

    DVO digesters provide a superior animal bedding material, high "P" transportable/saleable fertilizers, soil aeration and peat-moss amendments.

  • Liquid Nutrients

    The digestion process not only preserves the nutrient value in the manure, it also removes the odor, kills most pathogens (including E-Coli) and changes the state of the nutrients so they can be applied to a growing crop.

  • Heat Energy

    30-60% of the heat generated is used by the AD system. The remaining energy can be used as a replacement for hot water production (reducing natural gas or propane consumption), biosolids drying, in-floor heating of facilities, etc.

  • Nitrogen, as Ammonium Sulfate

    DVO's Ammonia Recovery process captures the nitrogen ammonia that is otherwise lost. AS (NH4)2SO4 is a stable 8:0:0:9S fertilizer, especially valuable where both N and sulfur (S) are required.

  • Phosphorus, Condensed

    Up to 90% of phosphorus can be economically captured, in a form that is more economical to transport to land that needs it.

  • Biofuels - CNG/RNG

    Biogas can now be economically cleaned, purified and pressurized to fuel semi-trucks, construction equipment, commercial fleets, farm vehicles etc.

  • Water Recycle/Re-Use

    Water is increasingly a scarce and valuable resource. Options are available to not only sequester nutrients, but return process water to a reusable condition.

Projects – View More »

    Biotown Ag, IN

    Food waste/Hog/"Mixed" digester, 3.17MW (expanding to 5.3MW)

  • Clover Hill Diary, WI

    2,000 milking, 480kW

  • Poultry Digester, OH

    Litter only, from 1.2M layer farm
    No irrigation, 100% water recycle

  • Ancali, Chile

    10,000 milking, 2.5MW

    Jerome, ID - Andgar Corp.
    Largest in North America

    11M gal/42k M3 cap, 4.5MW

  • Maxwell Farms, VT

    750 milking, 225kW

    Fair Oaks Dairies, IN

    14,000 milking, CNG + 1MW

  • Holsum Dairy, WI

    4,000 milking, 1MW

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Testimonials – View More Testimonials »

  • When a business such as ours makes an investment of this size the concensus from our family was to go with the proven technology. For us that meant DVO."

    Matt Maxwell
    Maxwell Farms, VT

  • We would never do any dairying without a DVO digester. Even if the electricity and manure solids sales made it only break even, the other benefits the system brings to a dairy would still make the digester essential."

    Joe, Chris, Sara and Brett Bonlender
    Clover Hill Dairy, WI

  • DVO took care of all details from writing grants to helping with design and installing the last manure pump. They have my philosophy of keeping things as simple as possible on the farm. However the most important part of their company are the people. Simply a great group to work with."

    Dave Meissner
    Norm-E-Lane, WI