High-temperature hydrogen production and microalgae oil production coupling capacity method

Abstract

The invention discloses a high-temperature hydrogen production and microalgae oil production coupling capacity method, and belongs to the technical field of biological energy. The method comprises thestep of introducing wastewater into a CSTR anaerobic reactor, inoculating secondary sedimentation tank sludge subjected to high-temperature domestication culture to carry out a continuous high-temperature hydrogen production reaction, and continuously conveying a fermentation liquor separated by the CSTR anaerobic reactor into a microalgae growth reactor during the high-temperature hydrogen production reaction, continuously conveying carbon dioxide and hydrogen generated in a high-temperature hydrogen production reactor to a position below the liquid level of the fermentation liquor in the microalgae growth reactor, after continuously introducing a fermentation product generated in the high-temperature hydrogen production reactor into the microalgae growth reactor for one day, inoculatingmicroalgae into the microalgae growth reactor, and culturing the microalgae; and then conveying the cultured microalgae fermentation liquor into a microalgae oil production reactor for circular oil production culture, collecting microalgae subjected to oil production culture, collecting hydrogen, and extracting grease in the microalgae. The method can realize continuous flow operation and is suitable for industrial production.

Description

technical field [0001] The invention relates to a method for coupling production capacity of high-temperature hydrogen production and microalgae oil production, and belongs to the technical field of bioenergy. Background technique [0002] High-temperature biohydrogen production as a stable biohydrogen production technology will also be more widely used. However, the current dark fermentation hydrogen production technology also has the problems of low hydrogen production efficiency, high hydrogen production cost, low substrate utilization rate, and secondary pollution caused by fermentation products. Therefore, the dark fermentation biohydrogen production technology still needs to be continuously improved to promote the industrial application of biohydrogen production. [0003] Today, the bottleneck problem restricting the scale of microalgae biodiesel is the expensive production cost, which also depends on the oil content of microalgae species. Therefore, reducing the cos...

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Problems solved by technology

[0007] In order to solve the problems that the existing hydrogen production and microalgae coupling oil production method is complex in operation, cannot realize continuous flow production, is not suitable for industrial production, and has high costs for biological hydrogen production and microalgae oil production, the present invention provides an energy-free A method for coupling production capacity of high-temperature hydrogen production and microalgae oil production, which has the advantages of low cost, no energy consumption, high substrate utilization rate and high production efficiency