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Tunnel composting

Project period

2014 until 2019


AVEA Entsorgungsbetriebe GmbH & Co. KG

Task and implementation

The Leppe fermentation and composting plant of AVEA GmbH & Co KG is part of a modern waste disposal centre that has developed around the Leppe landfill site near Lindlar-Remshagen. Steadily increasing waste volumes required an expansion of capacities from 55,000 to at least 75,000 Mg/a.

For this purpose, we designed a new tunnel composting facility on the site. It consists of a closed reception area, a hall for mechanical pre- and post-processing as well as eight composting tunnels for the hygienisation and rotting of the waste. A new line for fine processing of the compost was built in an existing hall. In addition to the process engineering measures, we also planned all civil engineering measures as well as the infrastructure.

Project data

  •     Total capacity of up to 27,000 Mg/a
  •     Pre-processing by means of slow-running shredders
  •     8 composting tunnels with wheel loaders for input and output
  •     Roof space with ventilation technology and rainwater retention and storage basin
  •     Exhaust air purification and removal by means of wet scrubber, covered biofilter and chimney
  •     Post-processing by means of feed dosing unit and star screen
  •     Fine preparation by means of over-belt magnet, tension shaft sieve and drum air classifier
  •     Waiting, storage and electrical room; transformer station
  •     Site preparation, terrain profiling, drainage, asphalt works


  1.     Basic evaluation
  2.     Preliminary planning
  3.     Design planning
  4.     Approval planning
  5.     Preparation of the awarding of contracts
  6.     Participation in the awarding of contracts
  7.     Implementation planning
  8.     Site management, local site supervision, supervision of trial operation

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