Experimental device and method for organic contaminated soil remediation by coupling resistance heating with microorganisms

A technology for microbial remediation and organic pollution, applied in the field of soil remediation, can solve the problems of high cost, low remediation efficiency, long remediation cycle, etc., and achieve the effect of simple structure

Active Publication Date: 2019-12-27
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Based on the problems existing in the prior art, the object of the present invention is to provide an experimental device and method for remediating organic polluted soil by coupling microorganism

Method used

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  • Experimental device and method for organic contaminated soil remediation by coupling resistance heating with microorganisms

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Experimental program
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Effect test

Embodiment 1

[0083] The resistance heating coupled microbial remediation experiment device of organic polluted soil provided in this embodiment, such as figure 1 As shown, the main body of the device is a quartz glass tube with an inner diameter of 6 cm and a length of 90 cm, which is filled with organic polluted soil as a pollution source, and a gas sampling port is set on the side wall near the rear port of the quartz glass tube. The sampling port is 10cm away from the outlet of the quartz glass tube, and a nickel-plated needle with an outer diameter of 3mm and a length of 6cm is installed on the gas sampling port, and a micro valve is installed on the nickel-plated needle; , Rear sealing end pieces, fine mesh screens are installed on each sealing end piece. Install two threaded stainless steel electrodes with an outer diameter of 4 mm and a length of 62 cm at the front opening of the quartz glass tube as electrode components, and an electrically insulated K-type thermocouple is installe...

Embodiment 2

[0088] This embodiment provides an experimental device for resistive heating coupling microorganisms to remediate organically polluted soil, such as figure 1 As shown, the main body of the experimental device is a quartz glass tube with an inner diameter of 6 cm and a length of 90 cm, filled with soil inside; a gas sampling port is arranged on the side wall of the tube near the outlet, 10 cm away from the rear end opening of the quartz glass tube, A nickel-plated needle with an outer diameter of 3mm and a length of 6cm is installed at the gas sampling port, and a micro valve is installed on the needle; the front opening and the rear opening of the quartz glass tube are respectively equipped with front and rear sealing end pieces. There is a fine mesh sieve. Install two threaded stainless steel electrodes with an outer diameter of 4 mm and a length of 62 cm at the front opening of the quartz glass tube as an electrode assembly. An electrically insulated K-type thermocouple is i...

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Abstract

The invention discloses an experimental device and method for organic contaminated soil remediation by coupling resistance heating with microorganisms. The experimental device comprises an electrode assembly, a quartz glass tube, a gas sampling assembly, a front sealing end piece, a rear sealing end piece, a thermocouple, a power supply, a water inlet pipe, a water outlet pipe, an automatic temperature feedback controller and a microbial remediation liquid preparation assembly. The method comprises the following steps: filling two thirds of the quartz glass tube from a front end opening to a rear end opening with organic contaminated soil, and filling the rest one third of the quartz glass tube with clean fine sand to serve as a descending gradient area; removing organic pollutants in theorganic contaminated soil by combination of heating the organic polluted soil by the electrode assembly, and injecting a microbial remediation solution into the organic contaminated soil in the quartzglass tube by the microbial remediation solution preparation assembly, and the organic contaminated soil is remediated. According to the device, organic pollutants in the organic contaminated soil are effectively removed in a manner of coupling electric heating and microbial remediation, and then the mechanism that the organic pollutants are jointly treated through electric heating and microbialremediation is conveniently studied.

Description

technical field [0001] The invention relates to the field of soil remediation, in particular to an experimental device and method for resistance heating coupling microorganism remediation of organic polluted soil. Background technique [0002] With the rapid development of my country's national economy, the process of industrialization has accelerated, and the industrial structure has been continuously upgraded. A large number of heavily polluting enterprises have been relocated one after another, leaving behind a large number of organically polluted sites. Therefore, there is an urgent need to conduct research on different organically polluted plots and develop efficient, economical, and green soil remediation technologies. [0003] At present, among the technologies related to the remediation of organic polluted sites, thermal desorption technology is the most researched, followed by biological remediation technology and combined remediation technology. Although most ther...

Claims

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Application Information

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IPC IPC(8): B09C1/10B09C1/06
CPCB09C1/062B09C1/10
Inventor 桑义敏余望段瑞洁何燎艾贤军陈家庆
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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