Verfahren zur Anaerobfermentation organischer Abprodukte

摘要

The invention relates to a process for anaerobic microbiological waste product utilisation which is suitable for converting to so-called biogas and high-grade natural fertilisers undiluted ammonia-containing aqueous dispersions and solutions containing biodegradable organic substances like waste products of agriculture such as slurries, like waste products of the food industry such as slaughtering wastes and waste products of the chemical industry. The object is achieved by the fact that after the known substrate degradation together with carboxylic acids, a self-alkalisation of the digested sludge by the anaerobic fermentation can be surprisingly exploited in order to remove ammonia from a part of the reaction medium taken out of the circulation, alone or in a mixture with substrate. The mixture can be fermented without addition of diluents so that biogas and high-grade fertilisers are formed.