Culture/harvesting method of microalgae and system

A technology of microalgae cultivation and microalgae, applied in the field of microorganisms, can solve problems such as low utilization rate, and achieve the effects of realizing rapid separation of solid and liquid, increasing yield, and increasing gas-liquid contact area.

Active Publication Date: 2009-10-14
ENN SCI & TECH DEV
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Problems solved by technology

[0007] The embodiment of the present invention provides a method and system for cultivating microalgae in a biological photosynthetic reactor to solve the problem of CO 2 The problem of low utilization

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  • Culture/harvesting method of microalgae and system
  • Culture/harvesting method of microalgae and system
  • Culture/harvesting method of microalgae and system

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Embodiment Construction

[0038] In order to make it easier for those skilled in the art to understand and realize the present invention, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The drawings are only used to help better understand the solutions of the embodiments, and may not be limited to the forms shown in the drawings in various implementations.

[0039] Considering that when microalgae are cultivated, microalgae need to absorb a large amount of CO during photosynthesis 2 and other inorganic substances to synthesize organic substances such as glucose and release oxygen and other substances. thus increasing the CO 2 The residence time and CO in the algae liquid 2 The contact area with the algae liquid is very important. The CO used in the embodiment of the present invention 2 The gas is rich in CO obtained after desulfurization, dust removal, and waste heat recovery. 2 Gas factory waste gas enters the algae liquid in...

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Abstract

The invention discloses a culture / harvesting method of microalgae and a system, which are used for solving the problems that in the prior art, when the microalgae is cultured, the utilization ratio of CO2 is low, and when the microalgae is harvested, a gas floatation method has complex steps and high cost. In the growth process of the microalgae, micron-sized bubbles containing CO2 are released to the solution of microalgae in a biological photosynthetic reactor; or micron-sized CO2 bubbles and micron-sized air bubbles are released to the solution of microalgae in the biological photosynthetic reactor; and when the microalgae is harvested, micron-sized air bubbles are released to the solution of microalgae, so as to lead the self-flocculating microalgae to be attached to the micron-sized air bubbles and then suspended on the surface of the solution of microalgae. The adoption of the technical proposal can improve the utilization ratio of CO2 when the microalgae is cultured, improve the yield of the microalgae, and reduce the harvesting steps and cost of the microalgae when the microalgae is harvested.

Description

technical field [0001] The invention relates to microorganism technology, in particular to a technology for cultivating and harvesting microalgae. Background technique [0002] Because microalgae are rich in various components, they have become raw materials for fertilizers, animal feed, health care products, food, medicine and even chemical industries, and microalgae farming has great potential for market development. [0003] But at present, there are still important technical problems in the industrialization of microalgae production, which need to be broken through. [0004] During the cultivation of microalgae, since microalgae need to absorb CO 2 and other inorganic substances for photosynthesis, while also releasing O into the microalgae suspension 2 , leading to O in the microalgae suspension 2 If the concentration is too high, it will inhibit the growth of microalgae, so it is necessary to provide a large amount of dispersed CO in the industrial cultivation of mi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N1/12C12M1/36C12M1/08C12M1/09C12R1/89
CPCC12M21/02C12M33/00C12M29/06
Inventor 王垚张涵王琳惠龙周宏峰甘中学李金来朱振旗
Owner ENN SCI & TECH DEV
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