• fraction containing biodegradable waste, mechanical ejected from the municipal waste,
• leftovers from municipal waste,
• "wet" waste obtained by the selective collecting system with the division into so called "wet" and "dry" waste.
  The mechanical-biological waste treatment plant (MBT) consists of two parts: mechanical and biological.

In the mechanical part, the fraction destined to biological treatment is separated. Depending on the waste structure and economic conditions the separated fraction can be treated with iron-, non-iron metal separators and aerial separators or manual segregation can be applied. From the rest of the fraction, both: secondary raw materials or the high calorific fraction can be obtained. The high calorific fraction can be further processed to fuel. The applied technique depends from the structure and the economic conditions.

In the biological part the oxygen processes – composting/ biological treatment - are applied. The main differences among composting and biological treatment consists in the input material and in the planed and expected final result.

The input material is fraction containing biodegradable waste, separated from municipal waste or municipal waste leftovers as well as from sewage sediment.

The main goal of the biological waste treatment plant is assuring of the optimal decay of the organic substances and thereby the limitation of the biodegradable waste on the landfills. Depending on the time of the biological treatment the required level of waste stability can be obtained.

The MBT – advantages:

• stabilization of the organic waste,
• organic waste reduction (their mass and volume),
• landfills waste reduction,
• minimizing of the harmful substances.