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Galvanic cell device for repairing chromium-contaminated soil based on microorganism-organic matter and repairing method of galvanic cell device

A technology for chromium-contaminated soil and contaminated soil, which is applied in the field of soil heavy metal remediation, to achieve the effect of no secondary pollution, high efficiency and simple operation

Active Publication Date: 2020-12-04
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is to overcome the defects and deficiencies of existing methods for remediating chromium-contaminated soil, and to provide a primary battery device for remediating chromium-contaminated soil based on microorganism-organic matter and its repair method

Method used

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  • Galvanic cell device for repairing chromium-contaminated soil based on microorganism-organic matter and repairing method of galvanic cell device
  • Galvanic cell device for repairing chromium-contaminated soil based on microorganism-organic matter and repairing method of galvanic cell device
  • Galvanic cell device for repairing chromium-contaminated soil based on microorganism-organic matter and repairing method of galvanic cell device

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Effect test

Embodiment 1

[0064] Example 1 Primary battery device based on microbe-organic matter remediation of chromium-contaminated soil

[0065] This embodiment provides a primary battery device for remediating chromium-contaminated soil based on microorganism-organic matter, including an anode chamber 1, a cathode chamber 2, an electron transfer path 3 and a salt bridge 4; the upper side of the anode chamber 1 is provided with a feed port 11 , The lower part of the side is provided with a discharge port 12, the top of the anode chamber 1 is provided with a sealing cover 13, and the electrode 114 is inserted into the inside of the anode chamber 1 through the sealing cover 13; the diameter of the hole is the same as that of the electrode 114;

[0066] The cathode chamber 2 is composed of a soil storage tank 21 with an upper opening, a rinsing recovery system 22 and an electrode 223. The leaching recovery system 22 is arranged inside the soil storage tank 21, and a filter valve 24 is arranged on the s...

Embodiment 2

[0072] The remediation of embodiment 2 chromium-contaminated soil

[0073] A method utilizing the device of embodiment 1 to restore chromium-contaminated soil may further comprise the steps:

[0074] S1. Mix organic matter with anaerobic sludge containing electricity-producing microorganisms after pretreatment, put it into the anode chamber 1, put the contaminated soil into the soil storage tank 21, and add eluent to the soil storage tank 21 for leaching wash, and then flow into the rinsing recovery system 22, and form a closed loop through the transfer between the salt bridge 4 and the electrons to repair the polluted soil;

[0075] S2. Take out the mixture of organic matter and anaerobic sludge obtained in step S1 from the anode chamber 1, take out the repaired polluted soil from the soil storage tank 21, mix them, plant chromium-resistant plants to extract the remaining chromium in the polluted soil, and complete the pollution Soil remediation.

[0076] The working princi...

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Abstract

The invention discloses a primary battery device for repairing chromium-polluted soil based on microbial organic matters and a repairing method thereof. The invention relates to a galvanic cell devicefor repairing chromium-contaminated soil based on microorganism-organic matter and repairing method of galvanic cell device, anaerobic sludge containing electrogenesis microorganisms in the device ismixed with organic matter to generate electrons, the electrons are transmitted through an electrode material and an electron transmission path to repair Cr<6+> in chromium-contaminated soil, metabolism of the electrogenesis microorganisms is improved through K<+> induction in a salt bridge, activation of chromium is promoted, and the chromium-contaminated soil remediation effect is improved, an organic acid leacheate is added, microorganisms can be promoted to adsorb and convert part of Cr<6+> in the soil; a mixture of organic matters and anaerobic sludge is taken out and mixed with the remediated contaminated soil, chromium-resistant plants can be planted to enrich a large amount of residual chromium in the contaminated soil, and the concentration of Cr<6+> in the soil meets the corresponding land type standard; when the device is applied to remediation of chromium-polluted soil, the problem of chromium pollution can be rapidly and effectively solved, and the device has the advantages of being low in cost, easy to operate, high in efficiency and free of secondary pollution and has good application potential.

Description

technical field [0001] The invention belongs to the technical field of soil heavy metal restoration. More specifically, it relates to a primary battery device for repairing chromium-contaminated soil based on microorganism-organic matter and a repair method thereof. Background technique [0002] With the rapid development of my country's industry, chromium is widely used in electroplating, metal processing, tanning, dyestuff, steel and chemical industries, etc., due to leakage in the production process, substandard discharge of wastewater, and percolation of chromium-containing waste residues, etc., lead to A large amount of chromium enters the soil and groundwater around the site, Cr 6+ Has become a major industrial site soil pollutants. Chromium is mainly polluted by Cr 6+ and Cr 3+ There are 2 valence forms, Cr 6+ The toxicity is Cr 3+ 500 times. Cr 3+ It is easily fixed in the soil by soil colloids and minerals through adsorption, coordination, complexation, preci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/08B09C1/10B09C1/02
CPCB09C1/085B09C1/10B09C1/02Y02E60/50
Inventor 王俊锋唐观辉严登明朱丛韵张铖彪田萍蔡泽祥江惠民周焕展
Owner JINAN UNIVERSITY
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