Grube Land & Umwelttechnik


Grube Land – und Umwelttechnick


Bremerhaven, Germany

Input materials:

15,000 tons per annum; green waste, municipal bio-waste

Amount of MAF units ordered:

18 MAF units


mainly fresh compost for agricultural use

Current operational systems:

one production line for fresh compost, one production line for finished compost, eleven aeration units for windrow area 3631 m²

Plant status prior to installation of MAF system:

Three in-vessel rotating drums utilized for initial treatment. 1.6m high triangle windrows under roof cover for final treatment.

Previous production problems:

  • Aggravated odour emissions leading to complaints from local residents and business
  • Inefficient material handling leading to volume reductions and delays
  • Viability of process at risk from new national legislation
  • Local authority threatens withdrawal of operating permit in 2007 for failure to comply

Reasoning for conversion to MAF:

  • Significant odour reduction
  • Extension of operating permit beyond 2007
  • Ensure future viability of process with compliance to governing regulations
  • Reduce material handling and increase production volumes in a timely manner

Results and conclusions:

  • Reduction of odour emissions falling well within government regulations
  • Operating permit extended beyond 2007
  • Significant improvements in both material handling and production volume
  • In-vessel system rendered obsolete (permanently shutdown)