FAQ - Frequently Asked Questions...

With the BIBKO® INFRATEC recycling plants, waste from sewer cleaning (EAV 200306), from freshwater boreholes (EAV 010504), from street cleaning (EAV 200303), from rainwater retention basins (EAV 170506) in particular, but also other waste can be recycled.

BIBKO® INFRATEC recycling plants use a wet-mechanical recycling process. The waste to be recycled is moved through a water bath. Mineral components <250 µm and impurities are washed out and discharged with the process water. The recycled material ≥250 µm is discharged via a spiral conveyor. To ensure a uniformly high quality of the recycled material, water flows through the recycling plant in countercurrent.

Depending on the plant design, the following main material flows result from the recycling process:

1. mineral components particle size >250μm
2. mineral components/impurities particle size >60 ... ≤250μm
3. process water Water with mineral constituents (grain size ≤60μm

1-chamber and 2-chamber recycling plants are available for recycling the waste. While the 1-chamber recycling plants are used for washing and removing adhesions to mineral waste, 2-chamber recycling plants are used if the proportion of organic components is also to be reduced.

The 1-chamber recycling units are available with capacities of 20 m³/h and 30 m³/h, depending on the version. The 2-chamber recycling plants with capacities of 15 m³/h, 20 m³/h and 30 m³/h.

Three options are available for feeding the waste. A distinction is also made between direct feeding and indirect feeding:

1. feeding via feed hopper direct material feeding
2. feeding via dosing buffer indirect material feeding
3. feeding via feed hopper indirect material feeding

While in the case of direct feeding, the waste is fed directly to the recycling plant, in the case of indirect feeding, the waste is first fed into a buffer. The advantage of indirect material feeding is the separation of material feeding and material recycling. A consistently high quality of the recycled material is thus ensured, regardless of the feed quantity and feed speed.

In order to be able to discharge the resulting process water into the public sewage system, it must be analysed and approved by the authorities. If the proportion of mineral components is too high, it is possible to reduce this proportion in a further step. This is done by using dewatering containers, lamella clarifiers or chamber filter/membrane filter presses.



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