Digestate and compost quality - case studies at anaerobic disgestion plants with the BTA Process
The key for the successful anaerobic digestion of biowaste and/or municipal solid waste is an efficient removal of the impurities before the digestion step. This is not only indispensable for the reliability of the process and therefore the plant availability, but furthermore for the quality of the produced digestate or final compost. With the existing
developments within the EU, the quality of the digestate / compost has become a focus of attention.
Further Authors:
P. Bolzano - Biotec Sistemi s.r.l.
J. Del’haye - IVVO
• In Castelleone (Italy), where biowaste and commercial waste are digested as co-substrates together with agricultural residues, the produced digestate is spread on the fields of nearby farms
• In the Biowaste Methanization Plant Kirchstockach (Germany) the dewatered digestate is mixed with green waste to produce quality compost
• In the Biowaste Methanization Plant Ieper (Belgium) the dewatered digestate is further processed to produce quality compost
• In the MBT Plant Valorlis (Portugal) the dewatered digestate is further processed to produce final (stabilized) compost
Finally, analysis carried out during the start-up and the operation tests for the MBT Plant Valorlis (Portugal), which treats Municipal Solid Waste, showed that the parameters for the content of physical impurities (content of plastics and of stones, glass splitters) are met. These are examples which prove that it is possible to obtain a quality product out of the digestate without an extensive refining step but a simple screening for the partial recovery of structure material, demonstrating the advantage of an efficient removal of impurities in the upfront of the anaerobic digestion.
| Copyright: | © European Compost Network ECN e.V. | |
| Quelle: | Orbit 2012 (Juni 2012) | |
| Seiten: | 7 | |
| Preis inkl. MwSt.: | € 7,00 | |
| Autor: | Rita Nimmrichter  Dipl. Ing. Stephan H. Schulte Ulrich Niefnecker | |
| Artikel weiterleiten | In den Warenkorb legen
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