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Method for processing feed through waste water microalgae

A technology for microalgae and waste water, applied in animal feed, animal feed, applications, etc., can solve problems such as no good solutions, and achieve the effects of saving drying costs, improving biological safety, and improving production performance

Active Publication Date: 2015-10-21
INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the above-mentioned three problems in the feed utilization of waste water microalgae, there is still no good solution

Method used

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  • Method for processing feed through waste water microalgae

Examples

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example 1

[0018] The Dunaliella is cultivated with the biogas slurry in the swine manure biogas fermentation tank of the pig farm. When the concentration of the Dunaliella is greater than 2.0 g / L, the Dunaliella begins to be collected and precipitated. The dry matter content of the Dunaliella after precipitation is 10%. Dunaliella and the maize husks crushed through a 40-mesh sieve were mixed in a weight ratio of 1:2.5, and Bacillus subtilis (1.0×10 10 cfu / g), after mixing, pile up on the ground for aerobic fermentation, the pile height is 90cm, it is conical, and the diameter of the bottom circle is 3.0m. The ambient temperature during fermentation was 15°C. On the 4th day of fermentation, when the 2 / 3 height from the ground and 20cm from the surface of the material are detected, the fermentation temperature reaches 65°C (the temperature of the material at a depth of 25cm reaches 76°C). The height is still 90cm, conical, and the diameter of the bottom circle is 3.0 meters. On the 6th...

example 2

[0027] The chlorella is cultivated by using the waste water from the pig farm, and when the concentration of the chlorella is greater than 2.0 g / L, the chlorella starts to be collected and precipitated, and the dry matter content of the chlorella after precipitation is 12%. Mix the chlorella and the corn husks crushed through a 40-mesh sieve in a weight ratio of 1:2, and add Bacillus subtilis (1.0×10 10cfu / g), after mixing, pile up on the ground for aerobic fermentation, the pile height is 80cm, trapezoidal, the bottom surface length is 2.0 meters, and the width is 1.5 meters. The ambient temperature during fermentation was 20°C. On the third day of fermentation, when the fermentation temperature reaches 62°C at a height of 2 / 3 from the ground and 20cm from the surface of the material (the temperature of the material at a depth of 25cm reaches 74°C), at this time, the material is turned from the inside out and then piled up again for fermentation. The height is still 80cm, tr...

example 3

[0030] Utilize the waste water from the pig farm to cultivate Scenedesmus, and start to collect and precipitate when the concentration of Scenedesmus is greater than 2.1g / L, and the dry matter content of the chlorella after precipitation is 15%. Mix Scenedesmus and corn bran crushed through a 40-mesh sieve in a weight ratio of 1:3, and add Bacillus subtilis (2.0×10 10 cfu / g), after mixing, pile up on the ground for aerobic fermentation, the pile height is 100cm, it is conical, and the diameter of the bottom circle is 2.0m. The ambient temperature during fermentation was 25°C. At the 60th hour of fermentation, when the fermentation temperature reaches 60°C at a depth of 2 / 3 from the ground and 20cm from the surface of the material (the temperature of the material at a depth of 25cm reaches 72°C), at this time, the material is turned from the inside out and then piled up again for fermentation. The height is still 100cm, trapezoidal, and the diameter of the bottom circle is 2.0...

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Abstract

The invention discloses a method for processing feed through waste water microalgae. According to the method, the microalgae cultured, collected and deposited through waste water is mixed with cornhusk and bacillus subtilis, then the mixture is accumulated on the ground and subjected to aerobic fermentation, and high temperature generated in the fermentation process is fully used for killing bacteria; cooled microalgae materials obtained after aerobic fermentation are mixed with pig overhead price compound feed, lactobacillus plantarum and trichoderma longibrachiatum are added in the mixing process, the moisture content is adjusted to be 40-50%, and the feed is taken out and fed to pigs after the feed is subjected to anaerobic fermentation and the pH is 3.5-5.0. By means of the method, the utilization rate of waste water is increased, drying cost of the microalgae is reduced, pathogenic bacteria in the waste water are killed, bio-security of microalgae utilization is improved, and feed-based utilization of the microalgae is promoted. The feed processed through the waste water microalgae is high in probiotic content, and productivity of the pigs is increased.

Description

technical field [0001] The invention relates to a method for processing feed with waste water microalgae, which belongs to the technical field of feed. Background technique [0002] The use of traditional fossil energy, resulting in CO 2 Emissions continue to increase, and the resulting global warming prompts people to search for CO 2 effective use of. It is theoretically believed that cultivating 1 ton of microalgae (dry weight) can fix about 1.83 tons of CO 2 , cultivating microalgae can significantly improve the environment. In fact, microalgae is still a high-quality feed material, its (chlorella) protein content is 50-60%, fat content is 4-9%, nucleic acid is 2-5%, protein efficiency is 2.22, pure protein utilization is 57.1, biological value 71.6, digestion coefficient 79.7. Microalgae contain a variety of nutrients, from which people have isolated β-carotene, astaxanthin, a variety of unsaturated fatty acids, enzymes and immune polysaccharides. Wei Qipeng et al....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K1/18A23K1/00
Inventor 刘雪盛清凯耿兵朱昌雄孙利芹孙中亮王星凌
Owner INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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