METHOD AND INSTALLATION FOR RECOVERING DUMP BIOGAS FOR DISINTOXICATION OF DUMPS AND SOLID WASTE STORAGE Russian patent published in 1999 - IPC

FIELD: environmental protection. SUBSTANCE: invention relates to dumps where household and non-toxic industrial wastes are stored. Collecting channels made in the form of flexible branches of filtration pipes are connected to collector-mixer and placed inside dump bulk. Biogas is delivered to consumers over the collector-mixer. Filtration pipes are placed in waste bulk at a depth of no less than 3 m along natural drainage lines with inclination at an angle not larger than 15 deg. in direction opposite to the point where filtration pipes are connected to collector-mixer. In filtration pipes, 50-60 mbar underpressure is developed to aspirate biogas from waste bulk. Branches of filtration pipes are laid on granulated material and covered from all sides with granulated material, for instance, with gravel. EFFECT: enhanced biogas recovery efficiency and ensured required delivery of biogas to consumers.