Equipment for composting, composting technologies, automated composting systems, additional devices 
Company: Backhus Eggersmann Group (Germany)

BACKHUS is the world’s largest manufacturer of special equipment for composting in open windrows and closed lanes. The company relies on its 25 years of experience in composting biodegradable waste (municipal waste, waste water sediment) and repairing contaminated soil. BACKHUS has delivered over 1,000 pieces of equipment to forty countries.

In addition, we offer windrow watering devices, windrow covering devices, compost filters, etc.

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Composting technology

Intensive composting in open windrows 

Composting of dewatered mud and other organic matter in open windrows is done on a hard surface field specially prepared for this purpose, where it is mixed with different obtainable structural materials in proper ratios to establish optimum organics and nutrients balance (N; P), optimum dry matter content (>40% dry matter) and optimum mixture structure. From then on regular windrow turning takes place in the course of approx. 10–12 weeks. Fermented compost is filtered and stored for ripening. Large screenings are added back into the composting process.

Process description for producing quality compost soil

 pdf Technological scheme for composting  pdf Composting with BACKHUS equipment
Technical data for windrow turning equipment

Backhus manufactures compost turning equipment in different sizes and for various purposes, also additional devices for the compost turners (windrow covering with plastic, windrow watering, etc.). We are happy to help in choosing the right equipment and composting technology.

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Technical data for Backhus windrow turning equipment

  • Composting in open windrows
    image025 Composting in open windrows

    Used for compost turning in open windrows. The most common way of composting. Used in smaller and medium sized composting plants. Often also on larger composting fields.

    A 30 A 36 A 43-65 A 70; A75
    Windrow width m 3.0 3.6 4.3–6.5 7.0; 7.5
    Windrow height m 1.3 1.8 2.3–2.9 3.2; 3.3
    Device performance m3/h 700 1,500 2,800–5,000 5,800; 6,800
    Suitable for small and medium sized composting plants with up to 300t of raw soil per year. The device moves by itself on tracks.

    Device can be transported on trailer.

     Suitable for medium sized composting plants with up to 500t of raw soil per year.
    The device moves by itself on tracks and is equipped with several additions (driver’s compartment, air purifier, air conditioner unit, lights).
    Device can be transported on trailer.
     Suitable for large composting plants with up to 10–15,000t of raw soil per year.
    The device moves by itself on tracks and is equipped with several additions (driver’s compartment, air purifier, air conditioner unit, lights).
     Suitable for large composting plants with > 20,000t of raw soil per year.
    The device moves by itself on tracks and is equipped with several additions (driver’s compartment, air purifier, air conditioner unit, lights).
    Device can be easily transported on trailer.
    Wide selection of features available (windrow remover, watering device, watering system, etc.)

  • Composting in closed lanes (LT; LTC)
    image029 Composting in closed lanes (LT; LTC)

    Innovative thinking in composting technology. Effective and easily automated compost turning system. Enables the use of diesel and electrical engines. Can be completely automated. Enables windrow and lane composting. Suitable for larger composting plants. Device performance up to 2,000m3/h.

     LT 27-36 LT 45-50
    Lane width m 2.7–3.6 4.5–5.0
    Lane depth m 1.2–2.0 2.0–2.7
    Device performance m3/h 400–800 2,000

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  • Features for composting devices

    We offer a wide selection of additional features for composting machines depending on the specifications of the project and customer’s requests:
    The cabin can be lowered (better transportation convenience);
    Windrow removal device;
    Windrow watering system;
    Windrow covering system;
    etc.

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Useful information