Qualitätssicherung von Holzasche bei der Verwertung auf Flächen

Suitability of Biowaste and Green Waste Composts for Organic Farming in Germany and the Resulting Utilization Potentials

“…This can be stated for the evaluation results themselves in retrospect up to 2015, even though the suitability of composts for organic farming has continued to increase since then, reaching around 70-73% in 2019/2020. This improvement in organic farming suitability from biowaste composts is significantly more than that from green waste composts, which was expected to improve for a number of measures regarding the input quality and foreign matter load in biowaste, but which has not yet been proven in terms of data [32][33][34].…”

“…The reasons for this can be found, on the one hand, in the improvements in input quality and contamination of biowaste in recent years, which are now the result of numerous measures and campaigns by the public bodies responsible for waste disposal, the relevant associations, the quality assurance organizations and the composting plants themselves for separate collection by type [34][35][36][37]. On the other hand, the tightening of the guideline value for the surface index of 25 cm 2 /l FM to 15 cm 2 /l FM in 2018 within the framework of the RAL Quality Assurance Compost of the BGK, which had been highly controversial for many composting plant operators, played a significant role in this.…”

“…This is mainly due to technical reasons for collection and due to incorrect sorting during collection, because substances and products were dropped into the containers by mistake. Therefore, the best possible purity of the specific input materials when collecting biowaste in the biowaste bin has not yet been implemented in some cases [32,34,36,38,39].…”