Strengthening remediation method and device for bioreactor

A technology of biological heap and heap body is applied in the field of bioremediation of organic polluted soil, which can solve the problems such as the inability to meet the expectation of continuous, efficient and rapid restoration of organic polluted soil, and the limited improvement range, so as to promote migration and distribution, promote the exertion of metabolic function, and facilitate the entry of water. The effect of promoting in the electrode tube

Active Publication Date: 2018-09-04
SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
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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 remedia

Method used

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  • Strengthening remediation method and device for bioreactor
  • Strengthening remediation method and device for bioreactor
  • Strengthening remediation method and device for bioreactor

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0043] Example 1 Electric Enhanced Biopile Remediation of Petroleum Hydrocarbon Contaminated Soil

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

[0045] The contaminated soil is constructed in the experimental treatment vacancy with an electric enhanced bioreactor to repair the pile body to build a trinity wind power integrated device (see Figure 1-Figure 5 ) The device includes a leachate reciprocating deployment system, a power s...

Example Embodiment

[0060] Example 2 Remediation of long-chain alkanes contaminated soil by electric enhanced biological reactor

[0061] The contaminated soil used in the experiment was n-hexadecane contaminated soil. After removing the visible grass roots and other impurities, the room was air-dried and passed through a 2mm sieve. n-hexadecane was artificially mixed as a representative of long-chain alkanes. After the contaminated soil configuration was balanced, the initial polluted soil was determined The content of n-hexadecane is 1.2% (V / W, mL·g -1 ). The initial pH of the contaminated soil is 8.2. The contaminated soil is mixed with pre-screened and prepared petroleum hydrocarbon functional degradation bacteria, and the total number of microorganisms in the mixed soil reaches 6.9×10 8 copies·g -1 earth.

[0062] The pile construction device digs a sloping pit in the central area of ​​the open space. As a leachate reciprocating system, there is a collection groove in the middle of the pit. The ...

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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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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 APPLIED ECOLOGY - CHINESE ACAD OF SCI
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