Mixed waste poses one of the biggest challenges in recycling. Different materials, such as plastics, metals, wood, and residual materials, are often difficult to separate from one another. Nevertheless, this is precisely where there is enormous potential for recovering valuable raw materials—provided the right technology is used.
Mixed waste is generated wherever materials are not properly sorted. Typical examples include construction site waste, commercial waste, and mixed recyclables from households. These often contain a combination of recyclable and non-recyclable components.
The goal of modern recycling processes is to separate these materials as efficiently as possible and make them reusable.
The processing of mixed waste requires a combination of different technologies that are coordinated with one another.
Shredder The first step is to shred the material. High-performance shredders reduce the volume and prepare the waste for further separation.
Screening Technology: Drum screens or vibrating screens are used to sort material by size. Fine particles are separated from coarse components.
Magnetic Separator: Metals such as iron and steel are reliably removed from the material stream using magnets.
Eddy Current Separator This technology enables the separation of non-ferrous metals, such as aluminum, from the rest of the material.
Air Classifier: Lighter materials, such as film or paper, are separated from heavier components by air currents.
Sensor-Based Sorting Systems Modern systems use cameras and sensors to accurately identify materials such as plastics and sort them automatically.
The process begins with the receipt and pre-sorting of mixed waste. This is followed by mechanical shredding. The materials are then gradually separated using various sorting methods.
In the end, several material streams are created:
Efficiency does not come from a single machine, but from the interaction of multiple systems. It is particularly important that:
Modern recycling facilities combine mechanical, physical, and sensor-based processes to achieve the highest possible recycling rate.
The processing of mixed waste can be very economically attractive if the right technology is chosen. Companies benefit from:
The better the separation, the higher the value of the individual material fractions.
Mixed waste doesn't have to be a problem—with the right technology, it can become a valuable resource. Modern recycling facilities enable the efficient separation and recovery of raw materials, which makes sense both environmentally and economically.