Method for improving soil through biogas slurry

• Main Authors: LIU JUN, FENG XIUGUO, JIN YAXIONG, JIN CHUNSHUANG, FAN GUOLI, SUN DONGXU, GAO JINXIA
• Format: Patent
• Language: Chinese; English
• Published: 21.07.2017
• Subjects: AGRICULTURE; ANIMAL HUSBANDRY; FISHING; FORESTRY; HUMAN NECESSITIES; HUNTING; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES ORIMPLEMENTS, IN GENERAL; SOIL WORKING IN AGRICULTURE OR FORESTRY; TRAPPING

The invention belongs to the technical field of soil improvement, and particularly relates to a method for improving soil through biogas slurry. The method comprises the steps that firstly, biogas slurry is subjected to 35-DEG C anaerobic fermentation for 2-5 d, then, the biogas slurry is discharged into a sedimentation basin for natural sedimentation for 1 d, large-particle solids in the biogas slurry are sufficiently sedimented; then, the sedimented biogas slurry is subjected to aerobic fermentation for 1-3 d; then, the biogas slurry obtained after aerobic fermentation is subjected to solid-liquid separation, and biogas slurry clear liquid and biogas residues are obtained; biogas residues are placed into a reaction kettle, a sprayer is adopted for spraying reaction auxiliaries and water to the surfaces of the biogas residues, the reaction auxiliaries and the biogas residues are uniformly mixed, then, the mixed biogas residues are subjected to squeezing and dewatering, and then drying and smashing are perfor