Biohydrogen production method and device adopting hydrophyte and animal manure light-dark cascade coupling

Abstract

A hydrogen preparation method adopting hydrophyte and animal manure light-dark coupling anerobic fermentation comprises the following steps: hydrophyte and animal manure which are subjected to composite ultrasonic-acidic treatment are mixed according to the proportion of 2:1-10:1 and then added into a dark fermenting hydrogen production tank, dried activated sludge (pH 5-7) subjected to microwave pretreatment is added as a bacterial source, the vaccination mass ratio of the bacterial source is 15-30 percent, nitrogen is pumped in to eliminate air a hydrogen production device, and continuous fermenting hydrogen production is carried out in the temperature of 30 DEG C-50 DEG C; and fermentation liquor of the dark fermenting hydrogen production tank enters into a light fermenting hydrogen production reactor, photosynthetic bacteria is vaccinated in a light fermenting hydrogen production tank, the vaccination mass ratio of the photosynthetic bacteria is 5-15 percent, the pH of the fermentation liquor is 7.0-8.0, a yellow-light lamp provides lighting, and light fermenting hydrogen production is carried out in the temperature of 30 DEG C-45 DEG C. The invention further provides a device for implementing the above method. The method provided by the invention effectively improves the hydrogen yield of organic wastes.

Description

technical field [0001] The invention belongs to the technical field of bioenergy, and in particular relates to a device for preparing hydrogen by using light-dark coupled anaerobic fermentation of aquatic plants and livestock manure. [0002] The present invention also relates to a method for producing hydrogen by using the above device. Background technique [0003] The increasing depletion of global non-renewable energy and environmental pollution pose a serious threat to human survival and sustainable development. The development of clean energy with high added value has become a research hotspot. As an efficient, clean and renewable energy source, hydrogen is mainly obtained through electrolysis of water, fossil fuel hydrogen production, and biological hydrogen production. Among them, biological hydrogen production can use microorganisms to decompose organic waste and other biomass under anaerobic conditions to produce hydrogen. [0004] my country is the country with ...

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Problems solved by technology

However, studies have shown that in addition to producing hydrogen and carbon dioxide, the terminal metabolites of dark fermentation hydrogen production contain a large number of low-molecular organic acids. main reason for stability

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