Reprocess cheaply instead of disposing expensivley

The Lobau composting plant is known for its high-quality compost. Every year, over 100,000 tons of organic waste, primarily green waste, are sustainably and ecologically processed into compost here. The green waste is shredded into rotting material using mobile Doppstadt secondary shredders from the AK series. In order to increase the added value of the overall process, the compost screen overflow is to be treated. The organic fraction depleted of impurities and contaminants is fed back into the composting process as structural material. In the course of this consideration, a test run was carried out with various process approaches. The screen overflow from compost production after screening was cleaned using air classifiers and density-based separation technology. A total of four high-quality output streams are produced. The air separator separates the heavy material fraction from the material flow. In addition to the cleaned organic material, the film fraction from the light material extraction is another material stream that can be reused, for example, to produce substitute fuel. The water-based separation technology separates the heavy material fraction into minerals and floatable material. Both purified organic fractions can be fed back into the material stream. The non-floatable fraction - the mixture of minerals and metals - can be further processed in the crusher into recycled construction material.

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Even at high throughput rates, the output qualities of all fractions were impressive. The already obvious added value from the post-treatment of the screen overflow was also successfully confirmed in the endurance test.