METHOD OF PRODUCING BIOGAS (VERSIONS) Russian patent published in 2014 - IPC C02F11/04 C02F3/28 C12M1/107 

FIELD: chemistry.

SUBSTANCE: method of producing biogas in periodic or continuous mode includes preparation of a substrate, anaerobic fermentation in mesophilic conditions, continuous removal of biogas from the biogas apparatus and removing the fermented mass the methane tank. A buffer agent primarily containing calcium carbonate is added during preparation of the substrate.

EFFECT: invention increases biogas output, levels down the effect of above-normal souring of fermented substances, prevents delay and complete stoppage of the process of splitting organic substances, and prevents slow-down of the methane fermentation process.

12 cl, 2 tbl, 10 ex