A compost additive containing overacidified biogas slurry, its preparation method and application

A peracidification and additive technology, which is applied in the field of agricultural resource development and environmental protection, can solve the problems of unrelated to the application of peracidification biogas slurry, high raw material cost, secondary pollution, etc., and achieve the purpose of inhibiting the growth of harmful microorganisms, scientific and reasonable preparation methods, and reducing The effect of carbon loss

Active Publication Date: 2022-02-01
INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because the composite catalyst and additives all use industrial raw materials, the cost is relatively high, and a large amount of heavy metals and chemically synthesized substances are introduced into the process to cause secondary pollution to the environment; Wang Leiyuan et al. (Wang Leiyuan, Liu Fei, Qin Cuilan, etc. Wood Effect of vinegar solution on physical and chemical properties of cow dung compost[J]. Chinese Journal of Agricultural Mechanics, 2015(03):302-306.) Adding different concentrations of wood vinegar to cow dung compost can significantly increase the product ammonium nitrogen, The content of nitrate nitrogen can reduce ammonia volatilization and nitrogen loss, and is beneficial to the process of composting and decomposing. However, wood vinegar is obtained from lignified straw and other materials through high temperature (500°C) pyrolysis, and its production is a high energy-consuming process. higher cost
[0006] Chinese patent literature (application number: 2019111002889) discloses a silage additive with peracidified biogas slurry as the main raw material and its preparation method and application. The silage additive involved in this invention includes the following raw material components: peracidified biogas slurry, tap water, Pectinase, xylanase, catalase; and discloses a method for obtaining peracidified biogas slurry; but does not involve the application of peracidified biogas slurry in composting

Method used

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  • A compost additive containing overacidified biogas slurry, its preparation method and application
  • A compost additive containing overacidified biogas slurry, its preparation method and application
  • A compost additive containing overacidified biogas slurry, its preparation method and application

Examples

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Effect test

Embodiment 1

[0065] A compost additive containing peracidified biogas slurry, comprising the following components by weight:

[0066] 20 parts of peracidified biogas slurry, 10 parts of tap water, catalase (enzyme activity: 1.0×10 4 IU / g) 0.06 parts, Lactobacillus johnsonii ATCC 11506 (2.0×10 8 cfu / g) 0.05 parts, Lactobacillus rhamnosus ATCC 21052 (2.0×10 8 cfu / g) 0.05 parts, 2 parts of vermiculite, 2 parts of diatomaceous earth.

[0067] The preparation method of described compost additive comprises steps as follows:

[0068] (1) Take the overacidified biogas slurry with a pH of 5.0, and centrifuge it at 3000rpm for 10 minutes to remove solids such as biogas residues to obtain a treatment solution 1, which is the overacidified biogas slurry;

[0069] (2) Take the treatment solution 1 prepared in step (1) and carry out pasteurization treatment: heat treatment at 72°C for 40 minutes, no methanogens were detected in the biogas slurry after treatment, and the number of Escherichia coli dro...

Embodiment 2

[0074] A compost additive containing peracidified biogas slurry, comprising the following components by weight:

[0075] 20 parts of peracidified biogas slurry, 20 parts of tap water, catalase (enzyme activity: 1.0×10 4 IU / g) 0.02 parts, Lactobacillus johnsonii ATCC 11506 (1.0×10 8 cfu / g) 0.05 parts, Lactobacillus rhamnosus ATCC 21052 (1.0×10 8 cfu / g) 0.05 part, 1 part of vermiculite, 1 part of diatomaceous earth.

[0076] The preparation method of described compost additive, the steps are as follows:

[0077] (1) Take the overacidified biogas slurry with pH 5.5, and centrifuge it at 4000rpm for 5 minutes to remove solids such as biogas residues to obtain treatment solution 1, which is the overacidified biogas slurry;

[0078] (2) Take the treatment liquid 1 prepared in step (1) and carry out pasteurization treatment: heat treatment at 65°C for 20 minutes, no methanogens were detected in the biogas slurry after treatment, and the number of E. coli was reduced to 3cfu / mL , ...

Embodiment 3

[0083] A compost additive containing peracidified biogas slurry, comprising the following components by weight:

[0084] 20 parts of peracidified biogas slurry, 15 parts of tap water, catalase (enzyme activity: 1.5×10 4 IU / g) 0.06 parts, Streptococcus thermophilus ATCC 19258 (2.0×10 8 cfu / g) 0.1 parts, Lactobacillus johnsonii ATCC 33200 (2.0×10 8 cfu / g) 0.1 part, 3 parts of vermiculite, 3 parts of diatomaceous earth.

[0085] The preparation method of described compost additive, the steps are as follows:

[0086](1) Take the crude overacidified biogas slurry with pH 4.5, and centrifuge it at 3000rpm for 15 minutes to remove solids such as biogas residues to obtain treatment solution 1, which is the overacidified biogas slurry;

[0087] (2) Take the treatment solution 1 prepared in step (1) and carry out pasteurization treatment: heat treatment at 80°C for 60 minutes, no methanogens were detected in the biogas slurry after treatment, and the number of E. coli was reduced to ...

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Abstract

The invention relates to a compost additive containing peracidified biogas slurry and its preparation method and application. 0.05 part of Lactobacillus rhamnosus, 2 parts of vermiculite, and 2 parts of diatomaceous earth. The present invention uses peracidified biogas slurry produced by anaerobic biogas fermentation failure as the main raw material, and adds catalase, Lactobacillus johnsonii, Lactobacillus rhamnosus, vermiculite and diatomaceous earth through centrifugation, pasteurization and other processing steps. Compost additives made from enzymes, active microorganisms, and porous materials. The invention makes full use of the volatile fatty acid substances rich in peracidified biogas slurry, and has a good effect in the composting treatment of agricultural and animal husbandry waste such as chicken manure and cow manure. The preparation process is simple, the product cost is low, and the effect is outstanding. It has broad application prospects in the field of agricultural waste recycling.

Description

Technical field: [0001] The invention relates to a compost additive containing peracidified biogas slurry, a preparation method and application thereof, and belongs to the technical field of agricultural resource development and environmental protection. Background technique: [0002] In recent years, with the substantial improvement of my country's social productivity level and the gradual increase of people's income, the market demand for meat, eggs, milk and other livestock and poultry products has continued to expand, while the promotion of large-scale farming methods, the introduction of new varieties and the government The rational guidance of the policy of benefiting farmers has jointly promoted the vigorous development of my country's animal husbandry industry. According to the Statistical Yearbook of the National Bureau of Statistics, in 2018, the total output of meat products in my country reached 86.2463 million tons, the output of poultry eggs reached 31.2828 mill...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G1/00
CPCC05D9/00
Inventor 付龙云袁长波王艳芹李彦井永苹孙明
Owner INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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