Livestock farm wastewater treatment and resource utilization system

• Main Authors: JI KANGNING, XU CHUANHANG, NING XIAOFEI, LI LIANG, DONG QIAOHONG
• Format: Patent
• Language: Chinese; English
• Published: 10.09.2021
• Subjects: AGRICULTURE; AIR SUPPLY; ANIMAL HUSBANDRY; BLASTING; BURNERS; CARE OF BIRDS, FISHES, INSECTS; CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FORCOMBUSTION CHAMBERS, e.g. FIREBRIDGES; CHEMISTRY; COMBUSTION APPARATUS; COMBUSTION PROCESSES; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDEDFOR; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS INCOMBUSTION CHAMBERS; DRAUGHT-INDUCING; FERTILISERS; FISHING; FLUES; FORESTRY; HEATING; HUMAN NECESSITIES; HUNTING; LIGHTING; MANUFACTURE THEREOF; MECHANICAL ENGINEERING; METALLURGY; NEW BREEDS OF ANIMALS; ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTIONRESIDUES; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTIONAPPARATUS; SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS; TRAPPING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE; WEAPONS

The invention discloses a livestock farm wastewater treatment and resource utilization system. The system comprises a biogas generation system, a biogas combustion system, a spray evaporation system and a livestock shed environment regulation system; a biogas slurry preheater is additionally arranged on the outlet pipeline of the spray evaporation tower so that waste heat in flue gas is recovered, moisture in the flue gas is condensed, and water resources are saved while zero discharge of liquid is realized; according to the biogas fermentation tank, hot flue gas heat tracing and evaporation tower concentrated liquid backflow are adopted, hot flue gas enters a heat tracing cavity from the periphery of the bottom of the biogas fermentation tank, the temperature of the tank body is more uniform, the biogas fermentation tank can be kept at a stable and uniform higher temperature, and the yield of biogas can be increased; combustion-supporting air required by methane combustion comes from the livestock and poultr