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A method and device for strengthening and repairing biological piles

A technology of biological heap and heap body, applied in the field of bioremediation of organic polluted soil, can solve the problems such as the inability to meet the expectations of continuous, efficient and rapid restoration of organic polluted soil, and the limited improvement range, so as to promote the migration and distribution, promote the exertion of metabolic functions, and improve the defects of the soil. The effect of oxygen environment

Active Publication Date: 2020-11-27
SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, practice has shown that although the existing general intensification method of bio-pile remediation technology has a certain effect of "speeding up the remediation", the improvement range is limited, and it still cannot meet people's expectations for the continuous, efficient and rapid remediation of organic contaminated soil.

Method used

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  • A method and device for strengthening and repairing biological piles
  • A method and device for strengthening and repairing biological piles
  • A method and device for strengthening and repairing biological piles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1 Electrically Enhanced Bioreactor Remediation of Petroleum Hydrocarbon Contaminated Soil

[0044] The contaminated soil used in the test is the long-term petroleum-contaminated soil in the oilfield well site. After removing the impurities such as grass roots visible to the naked eye, it was air-dried indoors and passed through a 2mm sieve. The initial petroleum hydrocarbon content of the contaminated soil was determined to be 4.2% (W / W, g g -1 ). The initial pH of the contaminated soil was 7.6. The contaminated soil was mixed with pre-screened and prepared petroleum hydrocarbon functional degradation bacteria, and the total number of microorganisms in the mixed soil reached 3.39×10 8 copies·g -1 earth.

[0045] Contaminated soil was repaired by electric power-enhanced biological pile in the open space for test treatment, and a three-in-one wind power integrated device was built (see Figure 1-Figure 5 ) The device includes a leachate reciprocating deploymen...

Embodiment 2

[0060] Example 2 Electrodynamic Enhanced Bio-piles Remediation of Long-chain Alkanes Contaminated Soil

[0061] The contaminated soil used in the test is n-hexadecane contaminated soil. After removing impurities such as grass roots visible to the naked eye, it is air-dried indoors and passed through a 2mm sieve. Artificially mixed with n-hexadecane as a representative of long-chain alkanes. The n-hexadecane content is 1.2% (V / W, mL·g -1 ). The initial pH of the contaminated soil was 8.2. The contaminated soil was mixed with pre-screened and prepared petroleum hydrocarbon functional degradation bacteria, and the total number of microorganisms in the mixed soil reached 6.9×10 8 copies·g -1 earth.

[0062] The pile building device digs an inclined pit in the central area of ​​the open space as a leachate reciprocating deployment system. There is a collection groove in the middle of the pit. The height direction section of the inclined designed pit is an inverted trapezoid. T...

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Abstract

The invention relates to the technical field of biological remediation of organic polluted soil, in particular to a strengthening remediation method and device for a bioreactor. The three-in-one windpower integration device comprises a leachate reciprocating distribution system, a power supply system and an electrolyte nutrient supply system pipeline; and the leachate reciprocating distribution system is arranged at the bottom of the device, the power supply system is composed of at least one electrode group of a sandwich-liked structure, and the electrolyte nutrient supply system is composedof the electrolyte nutrient supply system pipeline and an intermediate layer electrolyte nutrient supply system pipeline. According to the method and the device, the cathode design of a wind power integration mode effectively improves the anoxic environment at the bottom of a reactor body, so that secondary pollution is avoided and organic pollutants are thoroughly removed through the leachate circulation design, the remediation efficiency of the bioreactor technology on the organic polluted soil is effectively improved, and the method is an effective realization method for strengthening application of the bioreactor repair technology.

Description

technical field [0001] The invention relates to the technical field of bioremediation of organic polluted soil, in particular to an intensified restoration method and device for biological piles. Background technique [0002] As a remediation technology with the highest acceptance, the deepest understanding and the widest application range, bioremediation technology has always been the most popular remediation technology for soil pollution control workers due to its advantages of low cost, low risk, high environmental protection and easy operation. method. However, the low efficiency and slowness of bioremediation technology is also an aspect that always limits its application and needs to be improved. At present, the existing bioremediation technology improvement methods mainly focus on two aspects: the application method and the control method of microbial remediation of organically polluted soil. Among them, improvement measures such as biological piles, prefabricated b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/08B09C1/10
CPCB09C1/085B09C1/10
Inventor 郭书海王卅李凤梅李刚吴波张凯
Owner SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
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