BIOMETHANE DISPOSAL PLANT Russian patent published in 1997 - IPC

FIELD: waste disposal. SUBSTANCE: invention relates to utilization of sewage-household drains and solid household wastes with production of biomethane and intensification of vitality of methanogens by way of introducing liquid radioactive wastes. Method proposed may find use on nuclear heat and power stations, etc. After fermentation of waste substrate in chambers 5,6,7, and 8 - those of acid, regression acid, neutral, and alkali fermentation, fermentable wort is withdrawn and further fermented in methane fermentation chamber 9. Wort is then supplemented with low- active radioactive waste to intensify methanogenesis in sections 17 using blowing biogas by means of blowers through perforated screens 12 and a bed of immobilized charge 11. Wort overflows in downward direction over flow-through barrels 19 and 20. Biomass is separated in inertial microfilter 21 and disintegrated in pump 22. On rotation of rotor, liquid is tossed out of deepenings through annular gap between rods with free ends. Hydraulic thrust is transformed into static one. On multiple repeating of this sort of transformation, liquid is heated. Between rods and in rotor deepenings, reduced pressure arises causing evaporation of liquid. Intensity of hydrodynamic, cavitation, and heat effects on shells of methanogens resulting in releasing physiologically active substances and enzymes to decompose water in methane fermentation chamber 9 are enhanced by vibration of free ends of rods. EFFECT: intensified process. 3 dwg