NOVELTY - Process for use in agriculture and urban-municipal economies for rational use of a urban household waste products and different organic agricultural waste products with production from anaerobic fermentation products of used for the power purposes fuel biogas and the high-quality decontaminated from pathogenic microflora, helminths, their eggs and seeds of the weeds mineralized organic fertilizers with a high share of humus and other stimulators of different plants growth and bearing, is new.    USE - Agriculture and urban-municipal economies.    ADVANTAGE - The invention ensures realization of the serial phase-by-phase anaerobic fermentation of different state organic household waste products, production of the greatest quantity of the decontaminated fertilizer, humus and a fuel biogas.    DETAILED DESCRIPTION - The process is for use in agriculture and urban-municipal economies for rational use of a urban household waste products and different organic agricultural waste products with production from anaerobic fermentation products of used for the power purposes fuel biogas and the high-quality decontaminated from pathogenic microflora, helminths, their eggs and seeds of the weeds mineralized organic fertilizers with a high share of humus and other stimulators of different plants growth and bearing. The method of a serial phase-by-phase anaerobic fermentation of fermentable organic waste products is conducted in a methane tank divided by a vertical partition not reaching its bottom into two unequal by volume chambers, in the upper part of the smallest of which there is a protected by a perforated fencing loading-unloading elevator of the waste products, where the first sour phase of the fermentation by a symbiosis of splitting microorganisms at pH less than 7.0 is conducted. Products of organic substance disassimilation of wastes products and vital activities of microorganisms are fed in the second phase of fermentation at pH - 7.2 in the form of methanic microorganisms basically in the greater chamber of the methane-tank with formation of a fuel biogas. Unfermentable substances and different impurities without their sorting unload by the elevator from the methane-tank. The technical result is realization of the serial phase-by-phase anaerobic fermentation of different state organic household waste products with different impurities without their grounding, sorting and dilution; a capability to separate and remove the unfermented waste products and impurities, the fullest disassimilation with production of the greatest quantity of the decontaminated fertilizer with the greatest share of humus, stimulators of growth and bearing of plants and the greatest outlet of a fuel biogas.