Stabilat®-process

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Utilise waste instead of dumping it!

By using Herhof’s Stabilat® technology, the volume of residual waste is organically reduced through dewatering. At the end, the water content lies distinctly below 15 percent, which significantly improves the mechanical separability of the material. This distinguishes Herhof's Stabilat® process from all other conventional treatment techniques. Reusable material is separated during the process and can be sold as a genuine high-quality raw material and returned into the material cycle. The remaining organic waste fraction is pressed into hygienic, nearly odour-free energy resources known as pellets.

1. Processing

Extraneous matter and harmful substances are removed from the waste and the latter is then shredded to a maximum grain size of 250 mm and then transported via a fully-automatic crane system into the Herhof bio box.

2. Stabilisation

In the Herhof bio box, the waste is dewatered through biological means. This is the vital step to the subsequent pure source separated break down of the waste mixture into reusable material and energy as well as for the storability of the fuel generated.

3. Inert separation

This means the removal of the mineral fraction (stones, glass, ceramics) and the metals, separated into ferrous and non-ferrous metals.

The core of our ideas:

The Herhof bio box

The bio box has proven itself in composting for years.
We have applied this principle to other waste recycling.
The bio box is specially controlled for dry stabilization.

Seven-day aerobic composting

After the Herhof bio box is filled, the waste mixture is dewatered in a seven-day maximum aerobic composting. The humidity is discharged with the air in circulation. This is done with the natural organic heat that develops during composting.

<15% moisture

At the end, the waste mixture contains less than 15 percent moisture. That is the ideal condition for separating it very efficiently into reusable material and energy resources.

Herhof-Rottebox-Lohfelden

EC emission limits

At the same time, we strictly observe EC emission limits or even go below them markedly.

Encapsulated material flow

The entire material flow within the system takes place via encapsulated, fully automatic transport systems. The exhaust air created in the process is extracted and purified.

Pure source separation

The final step is the pure source separation into mineral and metal fractions as well as the separation of the combustible elements in form of a new fuel.

Reference plant

Stabilat®-plant in Osnabrueck (Germany)

The Herhof Stabilat® plant in Osnabrueck was built turnkey in 2005 and started commercial operation at the beginning of 2006. It currently represents modern control, regulation and visualisation technology and processes all municipal solid waste of the city and the district of Osnabrueck.This plant is operated by our affiliated company Helector Recyclingcenter Osnabrück GmbH.

Machine data

  • Collection bunker
  • Fully automated crane for filling the shredder
  • Pre-shredding
  • 5 Herhof bio boxes that are filled and emptied by the automated process crane
  • Completely closed conveyor and machine technology
  • Organic drying process according to Herhof System guarantees moisture content below 15 percent
  • Ventilation system to assist the organic processes with heat exchangers and cooling towers
  • Separation using air-tables and air-separators
  • Magnets and eddy current separators separate ferrous and non-ferrous metals
  • Postshredding to 40 mm
  • Pelletierung für Softpellets
  • Pelletising for soft pellets
  • Press for loading trucks
  • Dust pelletising
  • Water treatment plant for condensate cleaning
  • Exhaust gas purification with LARA® (thermal regenerative process)

Further references

In addition to plants in Germany, we have also constructed several plants in Europe.