Comprehensive utilization method of livestock and poultry manures and crop straw resources

A technology of livestock and poultry manure and crop straw, which is applied in the fields of application, waste fuel, and bio-organic part treatment, etc., to achieve the effect of mixing aerobic composting with reasonable conditions, reducing hazards, and saving fuel and energy

Inactive Publication Date: 2013-07-17
么向和
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the use of wet anaerobic fermentation to treat livestock and

Method used

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  • Comprehensive utilization method of livestock and poultry manures and crop straw resources

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Embodiment Construction

[0022] Taking the biogas project of a ten thousand dairy cow farm as an example, the specific implementation is as follows:

[0023] Anaerobic fermentation: Add crushed straw and cow dung to the fermenter, then add anaerobic fermentation inoculum for inoculation, stir and mix, and adjust the total solid content TS load in the fermenter to 15%-40%. , The fermentation temperature is controlled at 30°C-40°C, and the material is stirred by a stirring device during the fermentation process.

[0024] Biogas utilization: the generated biogas is used as boiler gas after dehydration, desulfurization and purification.

[0025] Utilization of biogas residue and biogas slurry: The generated biogas residue and biogas slurry mixture is transported to the composting site without solid-liquid separation, and directly used as a raw material for mixed aerobic composting.

[0026] Mixed aerobic composting: mix the mixture of biogas residue and biogas slurry with crushed straw and some manure, a...

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Abstract

The invention discloses a comprehensive utilization method of livestock and poultry manures and crop straw resources, which comprises the following steps of: (1) anaerobic fermentation: mixing livestock and poultry manures and crushed straw, adjusting the solid content of the obtained mixture to 15-40%, and adding an anaerobic fermentation inoculum into the mixture to carry out anaerobic fermentation so that biogas is produced and a biogas residue and biogas slurry mixture is obtained; (2) biogas utilization: purifying the biogas obtained in the step (1), and taking the purified biogas as boiler gas; (3) utilization of biogas residue and biogas slurry: not carrying out solid-liquid separation on the biogas residue and biogas slurry mixture obtained in the step (1), but directly taking the biogas residue and biogas slurry mixture as a mixed aerobic composting raw material; and (4) aerobic composting mixing: mixing the biogas residue and biogas slurry mixture obtained in the step (1), crushed straw and part of manures, and after the moisture content of the obtained mixture is adjusted to be 50-60%, carrying out aerobic composting. According to the invention, the biogas obtained through anaerobic fermentation is converted into a heat source of mixed aerobic composting, and the biogas residue and biogas slurry mixture is used for producing bio-organic compound fertilizers.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of agricultural waste resources and environmental protection, and specifically relates to anaerobic fermentation of livestock and poultry manure and crop stalks, utilization of biogas, direct mixing of crushed straw and part of livestock and poultry manure with biogas residue and biogas liquid mixture Resource utilization method of mixed aerobic composting. Background technique [0002] At present, with the rapid development of my country's livestock and poultry breeding industry, the daily discharge of livestock and poultry manure has increased sharply. If it is directly applied to farmland without effective treatment, it will bring serious pollution to the environment and even endanger the health of surrounding villagers. [0003] In response to this problem, different methods have been adopted at home and abroad for comprehensive utilization of livestock and poultry manure, and the most...

Claims

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Application Information

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IPC IPC(8): C05F17/00
CPCY02E50/343Y02E50/30Y02W30/40
Inventor 么向和丁之铨张天瑞
Owner 么向和
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