Microbial electrolytic cell and method for treating wood vinegar liquid by using same

Abstract

The invention relates to a microbial electrolytic cell and a method for treating wood vinegar liquid by using the same and belongs to the technical field of the treatment of pyrolysis waste liquid which is difficult to degrade by biodegradation. The microbial electrolysis cell comprises an anode chamber and a cathode chamber which are separated from each other through a separation membrane; the anode chamber comprises an anode water inlet arranged at the bottom of the anode chamber and an anode water outlet arranged at the top of the anode chamber; the anode chamber is filled with charcoal; the charcoal and a carbon fiber brush jointly form an anode electrode material, and at the same time, the charcoal is used as the carrier material of anode microorganisms; the cathode chamber comprisesa cathode water inlet arranged at the bottom of the cathode chamber and a cathode water outlet arranged at the top of the cathode chamber; foamed nickel serves as a cathode electrode material; and ananode and a cathode are connected to an external circuit through titanium wires. The microbial electrolytic cell provided by the invention has the advantages of environmentally-friendly performance, low cost and simple operation. With the microbial electrolytic cell and the method of the invention adopted, the wood vinegar liquid which is difficult to degrade by biodegradation can be effectively treated, and the charcoal resources of electrolysis and carbonization can be fully utilized.

Description

Technical field [0001] The invention relates to the technical field of treatment of refractory biodegradable pyrolysis waste liquid, in particular to a microbial electrolytic cell and a method for treating wood vinegar liquid. Background technique [0002] With the rapid development of the industrial and agricultural economy and population growth, the water crisis is a complex issue facing all countries in terms of policy, economy and technology. my country’s industrial economic losses caused by water shortages amount to more than 230 billion yuan each year. In recent years, especially the discharge of refractory wastewater has been increasing rapidly, causing many rivers, lakes, reservoirs and even groundwater to be polluted to varying degrees. Therefore, wastewater discharge has become a serious environmental threat. Therefore, from the perspective of sustainability, if wastewater can be properly treated and reused as a resource, it can not only reduce the discharge of sewage i...

AI Technical Summary

Problems solved by technology

It has been determined that this kind of wastewater contains a large amount of carbon, hydrogen, oxygen, etc. If a large amount of this aqueous phase product containing high-concentration elements is directly discharged into the environment, it will not only cause environmental pollution, but also waste nutrients.

In particular, this kind of wastewater contains water-soluble organic compounds (pH=3.30) with high concentration (100,000mg COD / L), complex components, toxic and harmful, and high pH characteristics, such as oxygen-containing heterocyclic compounds. Oxygen-containing heterocyclic compounds are biologically refractory substances. If this refractory complex wastewater is discharged directly into the environment without further treatment, it may cause harm to the health of animals, plants, and even humans.

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