At the Langes Feld and Fischamend sites, we follow a specific formulation in the production of humified material for surface formation and as a water-retaining layer. The humification process relies on the open windrow composting of biogenic waste such as wood, green waste and municipal wastewater sludge. Fine mineral fractions and wood ash are also included.
The hot-composting process is an aerobic, exothermic, microbiological and biochemical transformation process and has a hygienising effect. This process is comparable with the common composting process. While common composting usually generates an end product similar to organic fertiliser, the end product of the hot-composting process is a pre-planned end product with a guaranteed quality as soil.
Once microbiological decomposition and transformation activity has receded, the raw humus stage begins. Further additives are combined with the raw humus in line with the final process control results and the humification process is completed. The end product serves as fertile topsoil.
The materials used in the humification process are subject to strict input and output quality checks in order to ensure consistency throughout the process. We monitor the hot-composting process through constant gas and temperature measurements and three process control analyses.