Oxidation removing method for polycyclic aromatic hydrocarbon in soil through Fenton reagent bag

A polycyclic aromatic hydrocarbon and reagent package technology, applied in the field of soil remediation, can solve the problems of high economic cost, soil structure damage, and high operational requirements

Inactive Publication Date: 2016-08-17
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Physical and chemical methods include heat treatment, photodegradation, soil leaching and electrodynamic restoration, gas phase extraction, chemical leaching, application of regulators, soil dumping, chemical solidification, etc. (Wu Jia...

Method used

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  • Oxidation removing method for polycyclic aromatic hydrocarbon in soil through Fenton reagent bag
  • Oxidation removing method for polycyclic aromatic hydrocarbon in soil through Fenton reagent bag
  • Oxidation removing method for polycyclic aromatic hydrocarbon in soil through Fenton reagent bag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Mix air-dried soil and distilled water from a polluted area of ​​a petrochemical plant to make a slurry, add oxalic acid to the slurry to adjust the pH value of the slurry to 3 to obtain 100g of acidic slurry, add Fenton reagent pack to the acidic slurry and stir evenly to obtain a slurry reaction After that, the mud reaction solution was allowed to stand for 12 hours to react, and the polycyclic aromatic hydrocarbons in the soil could be removed after the reaction.

Embodiment 2

[0027] Mix air-dried soil and distilled water from a polluted area of ​​a petrochemical plant to make a slurry, add oxalic acid to the slurry to adjust the pH value of the slurry to 4 to obtain 100g of acidic slurry, add Fenton reagent pack to the acidic slurry and stir evenly to obtain a slurry reaction liquid, and then the mud reaction liquid was allowed to stand for 12 hours to react, and the polycyclic aromatic hydrocarbon-removed soil could be obtained after the reaction.

Embodiment 3

[0031] Collect and air-dry the polluted area of ​​a petrochemical plant and mix it with distilled water to make a slurry. Add oxalic acid to the slurry to adjust the pH value of the slurry to 5 to obtain 100g of acidic slurry. Add Fenton reagent pack to the acidic slurry and stir evenly to obtain a slurry reaction liquid, and then the mud reaction liquid was allowed to stand for 12 hours to react, and the polycyclic aromatic hydrocarbon-removed soil could be obtained after the reaction.

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Abstract

The invention discloses a method for oxidizing and removing polycyclic aromatic hydrocarbons in soil by using a Fenton reagent bag, and belongs to the technical field of soil restoration. The method is to mix the air-dried soil to be tested with distilled water to make mud, add acid reagents to the mud to adjust the pH value of the mud to 3-5 to obtain acid mud, add Fenton reagent packs to the acid mud and stir evenly to obtain Slurry reaction liquid, then the mud reaction liquid is left to react, and the polycyclic aromatic hydrocarbons in the soil can be removed after the reaction; wherein the Fenton reagent package is made of FeSO 4 、H 2 o 2 and K 2 C 2 o 4 composition. This method can effectively remove naphthalene, acenaphthene, acenaphthylene, anthracene, fluorene and phenanthrene in soil, and the treatment time is shortened and the removal rate is improved compared with the traditional Fenton reagent.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to a method for oxidizing and removing polycyclic aromatic hydrocarbons in soil by using a Fenton reagent pack. Background technique [0002] With the rapid development of industry and agriculture in our country, a large amount of waste gas, waste water, waste residue, etc. have been improperly discharged, directly or indirectly causing soil pollution. Polycyclic aromatic hydrocarbons (PAHs) are a common type of high-risk organic pollutants in soil. On April 17, 2014, the "National Soil Pollution Survey Bulletin" issued by the Ministry of Environmental Protection and the Ministry of Land and Resources of my country pointed out that "my country's soil The exceeding standard rate of PAHs points reached 1.4%. How to efficiently remediate PAHs-contaminated soil to reduce the risk of soil pollution is a major research topic urgently needed to be resolved in the environmental fie...

Claims

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Application Information

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IPC IPC(8): B09C1/08B09C1/00
CPCB09C1/08B09C1/00
Inventor 高彦征秦莉康福星刘娟
Owner NANJING AGRICULTURAL UNIVERSITY
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