Single pond type microbiological cell by using organic wastewater as fuel

Abstract

Being able to remove organic matter in wastewater economically, and to generate electricity, the invention discloses single pool type microbiocell by using organic wastewater as fuel. The microbiocell includes structures: anode pool contains organic wastewater, and anaerbia; anode inside the anode pool; and cathode fixed on open end of the anode pool. The anode pool is an anaerobic environment. When metastasis of bacteria, organic matter in oxidic wastewater acquires electrons and generates protons. Through anode, and external circuit, electrons and protons reach to cathode. Outside of cathode contacts air directly. Being able to diffuse to inner side of cathode naturally, oxygen in air combines electrons and protons to generate water. Increasing content of oxygen on surface of cathode, the invention does not need extra dynamic force, and does not need to add electron transfer mediator. Anode pool can maintains anaerobic environment well without need of nitrogen blow-off.

Description

technical field [0001] The invention relates to a device capable of obtaining electric energy while removing organic matter in waste water, and belongs to the technical field of microbial fuel cells. Background technique [0002] A microbial fuel cell is a device that uses microorganisms to convert organic matter into electrical energy. At present, most microbial fuel cells are of double-cell type, including an anode pool and a cathode pool. Transfer to the anode, and then to the cathode through the external circuit, while the protons are transferred to the cathode through the proton exchange membrane; in the cathode cell with high dissolved oxygen, oxygen, protons and electrons combine to form water. [0003] Because microbial cells contain non-conductive substances, it is difficult for electrons to transfer from the normal microbial electron transport chain through the cell membrane to the electrode. The main method to solve this problem is to add redox molecules to the c...

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Problems solved by technology

[0005] The biofuel cell in Jin Binghong et al.'s patent (disclosure date is August 14, 2002, publication number is CN1364146A) is exactly a double-cell fuel cell. Although the fuel cell does not need to add an electron transfer mediator, in order to maintain The anaerobic state of the anode pool and the high dissolved oxygen state of the cathode pool need to continuously feed nitrogen into the anode pool and oxygen into the cathode pool, which increases the operating cost of the battery

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