A bioelectrochemical device with bacteria and algae and its application

Abstract

The invention relates to a bacteria and algae combined biological electrochemical device and application thereof. The bacteria and algae combined biological electrochemical device which is a system comprises module reaction cavities, air cathodes, carbon felt and carbon brushes. The air cathodes are arranged on the tops of the module reaction cavities, the carbon felt is arranged at the bottoms of the module reaction cavities and is used as an anode, the carbon brushes are arranged between the air cathodes and the carbon felt, a water inlet and a water outlet are respectively formed in two ends of the top of each module reaction cavity, the air cathodes are opposite to the carbon felt, facultative anaerobes grow on the carbon felt in an attached manner, algae plants grow on the carbon brushes in an attached manner, the air cathodes are connected with the carbon felt by external circuits, and the bacteria and algae combined biological electrochemical device is used for treating organic sewage. Compared with the prior art, the bacteria and algae combined biological electrochemical device has the advantages that the bacteria and algae combined biological electrochemical device is simple and compact in integral structure, and components of the bacteria and algae combined biological electrochemical device can be modularly combined with one another; synergistic effects can be realized on the basis of algae, the facultative anaerobes and the air cathodes, ion exchange membranes can be omitted, and accordingly the bacteria and algae combined biological electrochemical device is low in economic cost and stable in configuration, can run stably and has an excellent application prospect.

Description

technical field [0001] The invention belongs to the technical field of bioelectrochemistry, and relates to a bioelectrochemical device for combining bacteria and algae and its application. Background technique [0002] The global energy crisis has made researchers pay more and more attention to the development of alternative electricity production methods, which should come from renewable resources and do not increase carbon dioxide emissions. Microbial Fuel Cell (MFC) has aroused great interest of academic researchers because of its new energy generation method that can convert the chemical energy stored in organic compounds into electrical energy through the catalytic reaction of microorganisms. In MFC, microorganisms are used to generate electricity in the system, and at the same time, it can also realize the biodegradation of organic matter or waste. [0003] Chlorella (Chlorella spp.) is a class of universal single-celled green algae belonging to Chlorphyta, which appe...

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Problems solved by technology

[0007] However, the above-mentioned patents only use a single algae, which cannot avoid the disadvantage that algae cannot perform photosynthesis at night, which makes sewage treatment lack electron acceptors. At the same time, there is no corresponding adjustment for changes in external water flow and pollutant concentration. mechanism

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