Stacked recyclable microbial electrochemical reactor and degradation method of petroleum hydrocarbon contaminated soil

A technology for microbial electrochemistry and contaminated soil, which is applied in stacked recyclable microbial electrochemical reactors and the field of degradation of petroleum hydrocarbon contaminated soil, can solve problems such as affecting enrichment and limiting the application of S-MET

Active Publication Date: 2021-06-01
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above provides a lot of research basis for the efficient anaerobic microbial metabolism of petroleum hydrocarbons, and it is found that the enrichment of electroactive microorganisms can induce a large number of petroleum hydrocarbon degrading bacteria, but currently the electroactive microorganisms in S-MET only affect the anode surface 1cm The enrichment of petroleum hydrocarbon degrading bacteria within the range, which greatly limits the application of S-MET

Method used

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  • Stacked recyclable microbial electrochemical reactor and degradation method of petroleum hydrocarbon contaminated soil
  • Stacked recyclable microbial electrochemical reactor and degradation method of petroleum hydrocarbon contaminated soil
  • Stacked recyclable microbial electrochemical reactor and degradation method of petroleum hydrocarbon contaminated soil

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Experimental program
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Embodiment 1

[0041] 1) Assembly of stacked recyclable microbial electrochemical reactor

[0042] The petroleum hydrocarbon-contaminated soil is pretreated and placed in a Chinese-style acrylic reactor shell with a length of 2m, a width of 0.4m, a height of 0.9m on the left side, and a height of 1m on the right side. The bottom of the reactor has a slope of 30°. There is a water outlet with a diameter of 1cm at the bottom of the left side of the reactor shell and a filter screen to filter the sediment. The top of the right side of the reactor shell is equipped with a PTFE round table with a length of 20cm, a length of 10cm and a height of 15cm. The speed tank is connected with an external water pipe and a circulating water pipe. After the petroleum hydrocarbon contaminated soil is placed, a 20-mesh conductive steel mesh with a length of 90 cm and a width of 40 cm is inserted into the soil in sequence and inserted into the working electrode at a vertical slope of 5 cm. The working electrode i...

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Abstract

The invention provides a stacked recyclable microbial electrochemical reactor and a degradation method of petroleum hydrocarbon contaminated soil, and belongs to the technical field of microbial electrochemical soil remediation. According to the stacked recyclable microbial electrochemical reactor provided by the invention, the influence range of an anode is increased through a stacked microbial electrochemical system, the movement of petroleum hydrocarbon molecules in polluted soil is accelerated through a water circulation system, and the mass transfer capacity of the soil is improved, so that the efficiency of microbial electrochemical degradation of petroleum hydrocarbon in the soil is improved from multiple angles. The invention further provides a degradation method of the petroleum hydrocarbon contaminated soil, and the degradation method is easy to operate and high in degradation efficiency of the petroleum hydrocarbon in the contaminated soil.

Description

technical field [0001] The invention relates to the technical field of microbial electrochemical soil remediation, in particular to a stacked recyclable microbial electrochemical reactor and a method for degrading petroleum hydrocarbon-contaminated soil. Background technique [0002] The exploitation and utilization of oil fields have greatly improved the country's economic level, but it has also brought about serious oil pollution problems in the process of exploitation and transportation. The "Law of the People's Republic of China on the Prevention and Control of Soil Pollution" promulgated in 2018 also puts forward higher requirements for efficient and environmentally friendly restoration of oil-contaminated soil. With the continuous awareness of the ecological toxicity and health risks caused by oil pollution, the remediation of oil-contaminated soil has become a research hotspot that is generally concerned by all countries. [0003] With the rise of microbial electroch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/08B09C1/10
CPCB09C1/085B09C1/10B09C1/105B09C2101/00
Inventor 周启星李田王鑫
Owner NANKAI UNIV
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