Biological soil improvement material for agricultural purposes and method of producing same.

摘要

A method for producing a soil improvement material for agricultural purposes is proposed for the utilisation of animal and human excreta and is environmentally compatible and economic. The products to be processed, such as faeces, dung, slurry, sewage sludge, are treated with a mixture of polymers and acids, and subsequently gypsum, which is in any case produced as waste material, is added to the homogenised product. The mixed product is then subjected to heating. The resulting waste air is preferably biologically purified. The resulting product is outstandingly suitable as fertiliser for agricultural purposes.