Method and culture device for coupling biogas fermentation with microalgae culture

A technology of microalgae cultivation and biogas fermentation, which is applied in the direction of supporting/immobilizing microorganisms, sterilization methods, enzymology/microbiology devices, etc., and can solve problems such as groundwater pollution and soil compaction

Inactive Publication Date: 2015-07-08
SOUTH CHINA SEA INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Application Information

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This treatment method will not only cause soil compaction but also

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  • Method and culture device for coupling biogas fermentation with microalgae culture

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Embodiment 1

[0023] Such as figure 1 As shown, the cultivation device for coupling biogas fermentation and microalgae cultivation in this embodiment includes a biogas fermentation system 1, a filtration system 2, a microalgae cultivation reactor 3, a biodiesel extractor 4, a dehumidifier 5, and a biogas fermentation system 1 The bottom of the filter system is connected to the inlet of the filter system 2 through the biogas slurry delivery pipeline 7, the outlet of the filter system is connected to the microalgae cultivation reactor 3 through the culture solution delivery pipeline 15, and the residue outlet of the filter system is connected to the biogas fermentation system through the residue delivery pipeline 8. The upper part is connected, and a biogas delivery pipeline 9 is provided on the upper part of the biogas fermentation system, and the biogas delivery pipeline leads to the bottom of the microalgae cultivation reactor 3, and a purified biogas delivery pipeline 12 is provided on the...

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Abstract

The invention discloses a method and a culture device for coupling biogas fermentation with microalgae culture. The method comprises the following steps: carrying out biogas fermentation to obtain biogas and biogas slurry; filtering the biogas slurry to remove solid granules, diluting the biogas slurry to serve as a microalgae culture medium, filling the diluted biogas slurry in a microalgae culture reactor to serve as the microalgae culture medium, filling the bottom of the microalgae culture solution in the microalgae culture reactor with biogas to serve as a carbon source, culturing under a light condition, and drying and removing water vapor from the biogas flowing out from the microalgae culture reactor for use; when harvesting the microalgae, dewatering to obtain microalgae sludge and culture solution, extracting biolipid, phycocyanin and other products with high added values from the microalgae sludge, and carrying out biogas fermentation on the residual microalgae residues and the culture solution in a biogas digester as biogas fermentation materials. The entire process of the method disclosed by the invention is driven by the solar energy, and carbon, nitrogen, phosphorus and other microelements are recycled, thereby satisfying the requirements of green energy source and sustainable development.

Description

Technical field: [0001] The invention belongs to the field of microalgae cultivation, and in particular relates to a method and a cultivation device for coupling biogas fermentation and microalgae cultivation. Background technique: [0002] Microalgae, as a primitive autotrophic single-celled organism, has extremely high reproduction speed and photosynthetic efficiency compared with higher green plants. At the same time, with its advantages of not occupying arable land and low water quality requirements, it has become the third generation of bioenergy raw materials after corn. In particular, the screening, development and utilization of oil-rich microalgae with an oil content of more than 40% has attracted increasing attention. At the same time, some microalgae have very high content of phycocyanin, astaxanthin and other high value-added products. Therefore, the large-scale development and utilization of energy and high value-added resources microalgae has excellent develo...

Claims

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Application Information

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IPC IPC(8): C12P5/02C12P7/64C12P21/02C12M1/12C12M1/107C12M1/04C12M1/00
CPCY02E50/10Y02E50/30Y02P20/133Y02P20/59
Inventor 贾其坤向文洲李涛吴华莲
Owner SOUTH CHINA SEA INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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