Cooperative and efficient pig manure and rice straw anaerobic digestion method

An anaerobic digestion and rice straw technology, which is applied in the field of agricultural and animal husbandry waste treatment, can solve the problems of restricting efficient resource conversion of agricultural waste, waste of fibrous resources, etc., and achieves the effect of improving fermentation efficiency and methane production capacity.

Active Publication Date: 2017-06-13
JIANGXI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complex rigid structure of the cellulosic components in wastes, it is still difficult to efficiently utilize them directly in the...

Method used

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  • Cooperative and efficient pig manure and rice straw anaerobic digestion method
  • Cooperative and efficient pig manure and rice straw anaerobic digestion method
  • Cooperative and efficient pig manure and rice straw anaerobic digestion method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] This embodiment provides a method for synergistic anaerobic digestion of pig manure and rice straw, comprising the following steps:

[0054] S201: Inoculate Paenibacillus thermophilus NCB (preservation number: CCTCC NO: M2017076) into the first culture medium, and culture it statically at 55°C for 20 hours to obtain a strain content of (1-2)×10 6 Paenibacillusthermophilus NCB strain liquid of cfu / mL; wherein, the pH value of the first medium is 7.2, and the composition of the first medium includes: sodium chloride 5.0g / L, peptone 5.0g / L and yeast extract 1.0g / L L, the rest is water;

[0055] S202: Inoculate Clostridium clariflavum NC-1 (preservation number: CCTCC NO: M2017075) into the second culture medium, and culture it under anaerobic conditions at 55°C for 48 hours to obtain a strain content of (1-2)×10 6Clostridium clariflavum NC-1 strain liquid of cfu / mL; wherein, the pH value of the second medium is 7.2, and the composition of the second medium includes: filter...

Embodiment 2

[0063] This embodiment provides a method for synergistic anaerobic digestion of pig manure and rice straw, comprising the following steps:

[0064] S201: Inoculate Paenibacillus thermophilus NCB (preservation number: CCTCC NO: M2017076) into the first medium, and culture it statically at 50°C for 20 hours to obtain a strain content of (1-2)×10 6 Paenibacillusthermophilus NCB strain liquid of cfu / mL; wherein, the pH value of the first medium is 7.2, and the composition of the first medium includes: sodium chloride 5.0g / L, peptone 5.0g / L and yeast extract 1.0g / L L, the rest is water;

[0065] S202: Inoculate Clostridium clariflavum NC-1 (preservation number: CCTCC NO: M2017075) into the second culture medium, and culture it under anaerobic conditions at 50°C for 48 hours to obtain a strain content of (1-2)×10 6 Clostridium clariflavum NC-1 strain liquid of cfu / mL; wherein, the pH value of the second medium is 7.2, and the composition of the second medium includes: filter paper ...

Embodiment 3

[0071] This embodiment provides a method for synergistic anaerobic digestion of pig manure and rice straw, comprising the following steps:

[0072] S201: Inoculate Paenibacillus thermophilus NCB (preservation number: CCTCC NO: M2017076) into the first culture medium, and culture it statically at 52°C for 20 hours to obtain a strain content of (1-2)×10 6 Paenibacillusthermophilus NCB strain liquid of cfu / mL; wherein, the pH value of the first medium is 7.2, and the composition of the first medium includes: sodium chloride 5.0g / L, peptone 5.0g / L and yeast extract 1.0g / L L, the rest is water;

[0073] S202: Inoculate Clostridium clariflavum NC-1 (preservation number: CCTCC NO: M2017075) into the second culture medium, and culture it under anaerobic conditions at 52°C for 48 hours to obtain a strain content of (1-2)×10 6 Clostridium clariflavum NC-1 strain liquid of cfu / mL; wherein, the pH value of the second medium is 7.2, and the composition of the second medium includes: filte...

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Abstract

The invention relates to a cooperative and efficient pig manure and rice straw anaerobic digestion method which includes the steps: S101 uniformly mixing rice straws, pig manure and water according to a certain proportion, inoculating cellulose degradation mixed strains, and standing and cultivating mixture; S102 adding anaerobic sludge into products acquired in the S101, adjusting a pH(potential of hydrogen) value to be 7.2-7.5, and performing anaerobic fermentation cultivation for mixture under the closed oxygen-free conditions. According to the method, specific cellulose degradation mixed strains are added into the mixture of the pig manure and the rice straws, so that biological pretreatment is performed for the mixture, anaerobic fermentation is performed for the pig manure and the rice straws after the pig manure and the rice straws are cooperatively degraded, the anaerobic digestion efficiency of the pig manure and the rice straws and biogas yield are improved, and agricultural waste resources are efficiently utilized.

Description

technical field [0001] The invention relates to the technical field of agricultural and animal husbandry waste treatment, in particular to a method for synergistically efficient anaerobic digestion of pig manure and rice straw. Background technique [0002] Agricultural waste refers to the general term of organic matter discharged from livestock and poultry breeding, agricultural product processing, rural residents' life and agricultural production, and is mainly divided into two categories: fibrous waste and livestock and poultry manure. my country is a large agricultural country, and the annual production of crop straw is 700 million tons, while livestock and poultry manure is as high as 2.7 billion tons. These wastes contain a large amount of biomass energy, and their total energy can be converted into 700 million tons of standard coal. my country has now become the country with the largest annual output of agricultural waste in the world. However, most of the agricultura...

Claims

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Application Information

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IPC IPC(8): C12P39/00C12P5/02C12N1/20C02F11/04C12R1/01C12R1/145
CPCC02F11/04C12P5/023C12P39/00C12N1/205C12R2001/01C12R2001/145Y02E50/30
Inventor 张庆华李汉广吴晓玉沈飞
Owner JIANGXI AGRICULTURAL UNIVERSITY
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