Method for production of granulated organic fertilizer from sludge obtained during methane fermentation

摘要

Method for production of granulated organic fertilizer from sludge after methane fermentation, containing heavy metal ions is characterised in that to the sludge after methane fermentation 2-5% glauconite as calculated per dry mass is introduced and following mixing the sludge is subjected to drying and granulation to obtain dry mass content of over 92%.