Method and device for treating coking wastewater and producing hydrogen gas by microbial electrolysis cell

The invention belongs to the technical field of sewage treatment methods and devices, and particularly relates to a method and a device for treating coking wastewater and producing hydrogen gas by a microbial electrolysis cell. According to the method, coking bacteria are used as a biocatalyst; the microbial electrolysis cell is used for degrading toxic substances in the coking wastewater and producing the hydrogen gas. A microbial fuel cell is built through coding wastewater bacterium activation, anode electrode carbon felt and cathode electrode Pt-loaded carbon cloth treatment; after current reaches a stable highest value, the microbial fuel cell is converted into the microbial electrolysis cell; identically, after the current reaches the stable highest value, a dilution method is used for performing anti-toxic domestication on a biological membrane of the microbial electrolysis cell; then, the coking wastewater can be directly treated, and harmful substances in the coding wastewater are eliminated. By usin