Comprehensive fermentation method for alga marsh gas and products therefrom

A fermentation method and energy-based technology, applied in the direction of fermentation, waste fuel, etc., can solve problems such as affecting the ecological environment and algae outbreaks, and achieve the effects of improving the environment, rapidly producing gas, and promoting sustainable development.

Inactive Publication Date: 2007-05-30
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a biogas fermentation energy utilization lake and other water algae resource pools and biogas and biogas slurry in view of the problem that th...

Method used

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Embodiment 1

[0023] The cyanobacteria biogas fermentation process of the present embodiment adopts constant temperature fermentation, and its steps are as follows:

[0024] A. Raw material preparation and feed pre-treatment——adjust the pH value to 6.8 to 7.5 with lime water; the carbon-to-nitrogen ratio of algae itself is about 2.7:1. : 1) It is adjusted to a suitable carbon-nitrogen ratio of 20~30:1. The moisture content of the algae is adjusted to more than 20% by using the straw to meet the dry fermentation condition.

[0025] B. Microbial inoculation—Using anaerobic activated sludge to inoculate the new feed liquid with microorganisms, the inoculation ratio reaches 10-30% of the total fermentation feed liquid, including the first type of fermentation bacteria, which decomposes complex organic matter into relatively simple For example, polysaccharides are converted into monosaccharides, proteins are converted into peptides or amino acids, and fats are converted into glycerol and fatty ...

Embodiment 2

[0032] The algae biogas fermentation process of the present embodiment adopts plastic greenhouse to increase the temperature and ferment, and its steps are as follows:

[0033] A. Raw material preparation and feed pre-treatment——adjust the pH value to 6.8 to 7.5 with lime water; the carbon-to-nitrogen ratio of algae itself is about 2.7:1. : 1) It is adjusted to a suitable carbon-nitrogen ratio of 20~30:1. The moisture content of the algae is adjusted to more than 20% by using the straw to meet the dry fermentation condition.

[0034] B. Microbial inoculation - use the existing biogas slurry to inoculate the new feed liquid with microorganisms, the inoculation ratio reaches 10-30% of the total fermentation feed liquid, including the first type of fermentation bacteria, which decomposes complex organic matter into relatively simple For example, polysaccharides are converted into monosaccharides, proteins are converted into peptides or amino acids, and fats are converted into gl...

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Abstract

The invention discloses a fermenting method and product of algae methane power in the environment protective and new-energy technical domain, which comprises the following steps: adjusting the rate of carbon and nitrogen; controlling dried ferment; seeding microbe; controlling temperature; circulating ferment liquid; stirring; utilizing methane, liquid and slag effectively. The method makes methane content to 74%, which supplies gas stably.

Description

technical field [0001] The invention relates to a fermentation method and a product thereof, which belong to the technical field of environmental protection and new energy, and are specially used for fermenting algae in eutrophic water body into biogas energy and the comprehensive utilization of biogas, biogas liquid and biogas residue. Background technique [0002] More than 40% of the lakes in the world are polluted, and the situation in China is even more serious. 66% of the lakes are in the state of eutrophication, and more than 44% are in the state of heavy eutrophication. Due to the excessive nitrogen and phosphorus in the water body, the eutrophication of lakes and other water bodies leads to the outbreak of algal blooms. The main species of water bloom is poisonous cyanobacteria. The cyanobacteria that make up the water bloom multiply and die in large numbers. When they decompose, they emit unbearable stench and pollute the water quality and air. At the same time, th...

Claims

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Application Information

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IPC IPC(8): C12P5/02
CPCY02E50/343Y02E50/30
Inventor 严少华韩士群刘海琴王振宇宋伟黄建萍高运强
Owner JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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