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Efficient synergistic resource utilization method for livestock and poultry manure and silage straw

A resourceful, livestock and poultry manure technology, applied in the direction of biochemical equipment and methods, methods based on microorganisms, biochemical instruments, etc., can solve the problems of low gas production rate, difficult treatment and disposal, etc., to increase gas production and increase residence time , the effect of stabilizing gas production

Pending Publication Date: 2021-09-24
中钢集团天澄环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies in the existing technology, a method for efficient and collaborative resource utilization of livestock and poultry manure and silage straw is provided. Self-metabolism solves the problem of difficult handling and disposal of a single material and low gas production rate

Method used

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  • Efficient synergistic resource utilization method for livestock and poultry manure and silage straw
  • Efficient synergistic resource utilization method for livestock and poultry manure and silage straw
  • Efficient synergistic resource utilization method for livestock and poultry manure and silage straw

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Mix pig manure and straw at a ratio of 5:1 and carry out anaerobic fermentation. The silage straw is crushed to 5mm, and 3% of the compound cellulose-decomposing active bacteria are added to the returning biogas slurry and evenly sprayed on the surface of the silage straw for fermentation. After 30 days, the desanded pig manure was mixed evenly with the crushed silage straw particles, and the solid content rate was adjusted to 10%.

[0047] The mixed material enters the anaerobic fermentation tank 7, the temperature is maintained at 38 ° C, the pH value is 6.7-7.5, and the residence time is 35 days. The rotary jet agitator 16 and the blower 9 are operated 8 times a day. After anaerobic fermentation, "three Swamp" products.

[0048] Part of the biogas is used for gas-liquid stirring and recycling, and part of it is purified and purified to prepare vehicle-mounted compressed natural gas; biogas residues are aerobically fermented to prepare high-quality organic fertilizers...

Embodiment 2

[0050] Mix chicken manure and straw at a ratio of 7:3 and carry out anaerobic fermentation. The silage straw is crushed to 6 mm, and 4% of the compound cellulose-decomposing active bacteria are added to the backflowing biogas slurry and evenly sprayed on the surface of the silage straw for fermentation. After 40 days, the pig manure after desanding and the crushed silage straw particles are mixed evenly, and the solid content rate is adjusted to 15%.

[0051] The mixed material enters the anaerobic fermentation tank 7, the temperature is maintained at 42 ° C, the pH value is 7.2-7.5, and the residence time is 40 days. The rotary jet agitator 16 and the blower 9 are operated 8 times a day. After anaerobic fermentation, "three Swamp" products.

[0052] Part of the biogas is recycled by gas-liquid mixing, and part of the biogas enters the boiler and can be used for heating for surrounding residents; after aerobic fermentation of biogas residues, bulk organic fertilizers are prepa...

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Abstract

The invention discloses an efficient synergistic resource utilization method for livestock and poultry manure and silage straw. The livestock and poultry manure and the silage straw are blended into a mixed material in an adjusting tank (5); the mixed material enters an anaerobic fermentation tank (7), the anaerobic fermentation tank (7) is a torpedo type anaerobic reactor, and partition plates (17) are arranged in a cylinder body at intervals; a rotary spraying stirrer (16) is mounted between every two adjacent partition plates (17) on one side of the lower part of the cylinder body; every two partition plates (17) form a material reaction bin, and after the material enters the anaerobic fermentation tank (7), the rotary spraying stirrer (16) and an air blower (9) are started to carry out gas-liquid stirring on the material; after discharged slurry passes through a solid-liquid separator (10), biogas residues are subjected to aerobic composting to prepare organic fertilizer, and part of biogas slurry is treated and then returned to the field for utilization; and the other part of biogas slurry flows back to the adjusting tank (5) and a fermentation storage bin (3). According to the efficient synergistic resource utilization method for the livestock and poultry manure and the silage straw, through efficient cooperative treatment of feces and crops, and the gas production rate of biogas is increased.

Description

technical field [0001] The invention belongs to the technical field of solid waste energy reuse, and in particular relates to a method for efficient and coordinated resource utilization of livestock and poultry manure and silage straw. Background technique [0002] The industrial volume and market supply of livestock and poultry breeding and agricultural planting have brought economic progress and improved people's material living standards, but at the same time, the pollution caused has become more and more serious. Livestock and poultry manure is perishable, and after decomposition, hydrogen sulfide, alcohols, phenols and a large number of pathogens are produced, which pollutes the surrounding water bodies, aggravates the eutrophication of water bodies, and brings about the spread of diseases. Direct burning of straw in the field not only pollutes the surrounding environment and the atmosphere, but also causes a waste of resources. [0003] The patent document with the pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12M1/107C12M1/04C12M1/02C12M1/00C12P5/02C02F11/04C12R1/01C12R1/145C02F103/20
CPCC12M21/04C12M23/02C12M23/36C12M27/06C12M27/20C12M29/06C12M27/18C12M43/00C12M45/02C12P5/023C02F11/04C02F2103/20Y02P20/133Y02P20/59Y02P20/129Y02E50/30
Inventor 吴蒙朱海瀛叶威刘学军杨莎莎马晓辉
Owner 中钢集团天澄环保科技股份有限公司
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