Working electrode for degrading petroleum hydrocarbons, device and application for degrading petroleum hydrocarbons

Abstract

The invention relates to the technical field of microbial electrochemistry, in particular to a working electrode for degrading petroleum hydrocarbons, a device and application for degrading petroleum hydrocarbons. The working electrode for degrading petroleum hydrocarbons provided by the present invention includes a conductive substrate; the working surface of the conductive substrate is composed of a conductive region and an etching region; the conductive region and the conductive substrate are concentric circles, and the conductive substrate has a The diameter is greater than the diameter of the conductive region; the etched region is a ring; the sum of the diameter of the conductive region and the wall thickness of the etched region is the same as the diameter of the conductive substrate; the etched region includes Groove area and non-groove area; the grooves in the groove area are arranged at intervals along the diameter direction; electroactive microorganisms grow on the surface of the conductive region; the electroactive microorganisms include petroleum hydrocarbon degrading bacteria; the grooves The tank area is paved with magnetite. The working electrode expands the remediation range of electroactive microorganisms, and further enhances the degradation efficiency of degrading petroleum hydrocarbons.

Description

technical field [0001] The invention relates to the technical field of microbial electrochemistry, in particular to a working electrode for degrading petroleum hydrocarbons, a device and application for degrading petroleum hydrocarbons. Background technique [0002] At present, serious oil pollution problems will be brought about in the exploitation and utilization of oil fields. The erosion of ground oil and the leakage of oil transportation pipelines lead to the pollution of oil to the soil, and with the infiltration and migration in the soil, the oil will gradually pollute the surface water and groundwater, resulting in the decrease of dissolved oxygen in the water body, causing damage to the aquatic ecosystem. serious threat. Therefore, solving the problem of petroleum hydrocarbon pollution in water bodies has become a research hotspot of widespread concern in various countries. [0003] Due to the anaerobic characteristics of petroleum hydrocarbon-contaminated water b...

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Problems solved by technology

[0004] However, in the current MET, the electroactive microorganisms are mainly enriched on the electrode, so the repair range is greatly limited, and only the petroleum hydrocarbon molecules within 1cm around the electrode enriched with electroactive microorganisms can be repaired, and the electroactive microorganisms are in the After being enriched on the electrode for a long time, due to the thickening of the electroactive microbial film, the mass transfer is affected, and its electricity production performance is also greatly affected, which further limits the degradation process of petroleum hydrocarbons.

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