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In-situ oxidation medicine and pollution soil in-situ oxidation remediation method

A technology of in-situ oxidation and remediation methods, applied in the restoration of polluted soil, chemical instruments and methods, soil conditioning materials, etc., can solve the problems of remediation of environmental secondary pollution absorption and accumulation, slow operation cycle, poor mobility, etc. To achieve the effect of easy promotion, low cost and high reaction efficiency

Inactive Publication Date: 2016-08-17
JIANGSU TIANSHENG ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The microorganisms in the bioremediation method have poor mobility in the soil, are easily inhibited by the toxic effects of pollutants, and have a slow operation cycle, which is easy to cause secondary pollution to the remediation environment; in phytoremediation, the absorption of pollutants by super-accumulated plants and Accumulation is extremely slow, restoration often takes several growing seasons, and the operation cycle is slower than bioremediation

Method used

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  • In-situ oxidation medicine and pollution soil in-situ oxidation remediation method
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  • In-situ oxidation medicine and pollution soil in-situ oxidation remediation method

Examples

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Embodiment 1

[0030] Example 1: An in-situ oxidizing agent, including the following components and the ratio: the weight ratio of sodium persulfate, calcium oxide, iron-containing compounds, surfactants and co-solvents is 65:25:12:8:3 .

[0031] Wherein, the iron-containing compound refers to ferrous sulfate; the surfactant is an anionic surfactant; and the co-solvent is citric acid.

Embodiment 2

[0032] Example 2: An in-situ oxidizing agent, including the following components and the ratio: the weight ratio of sodium persulfate, calcium oxide, iron-containing compounds, surfactants and co-solvents is 60:20:10:5:1 .

[0033] Wherein, the iron-containing compound is a mixture of ferrous chloride and ferrous sulfate in a weight ratio of 1:5. Surfactants are nonionic surfactants. The co-solvent is any one of oxalic acid, citric acid, EDTA, NTA, sodium tripolyphosphate, and HEDPA.

Embodiment 3

[0034] Embodiment 3: An in-situ oxidizing agent, including the following components and the ratio: the weight ratio of sodium persulfate, calcium oxide, iron-containing compounds, surfactants and co-solvents is 70: 30: 15: 10:5 .

[0035] Among them, the iron-containing compound is mainly a mixture of ferrous chloride and ferrous sulfate in a weight ratio of 1:3.

[0036] Surfactants are cationic surfactants.

[0037] The co-solvent is any one of oxalic acid, citric acid, EDTA, NTA, sodium tripolyphosphate, and HEDPA.

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Abstract

The invention discloses an in-situ oxidation medicine and a pollution soil in-situ oxidation remediation method. The in-situ oxidation medicine comprises components sodium persulfate, calcium oxide, an iron-containing compound, a surfactant and a cosolvent according to the weight ratio of (60-70):(20-30):(10-15):(5-10):(1-5). The mediation method comprises the following steps: (1) dividing a pollution area; (2) arranging points and drilling wells; (3) preparing a medicine; (4) injecting the medicine. By adopting the pollution soil in-situ oxidation remediation method, the problems can be solved. The in-situ oxidation medicine and the pollution soil in-situ oxidation remediation method are easy to operate, the time and labor can be saved, and an address structure is not damaged.

Description

technical field [0001] The invention relates to an in-situ contaminated soil and groundwater remediation technology, in particular to an in-situ oxidizing agent and the removal of pollutants in a polluted area by injecting the in-situ oxidizing agent. Background technique [0002] Soil and groundwater remediation has become a hot spot in environmental protection research at home and abroad. Soil is located in the center of the natural environment, the material basis for human survival, and the central link connecting the inorganic and organic, biological and non-biological realms in the natural environment. As the basis of agricultural production and an important part of environmental elements, it bears about 90% of the pollutants in the environment from various sources. In recent years, with the development of modern industrial society, the pollutants entering the soil are also increasing. Moreover, soil and groundwater interact and influence each other. Once the soil is...

Claims

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Application Information

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IPC IPC(8): C09K17/40B09C1/08
CPCC09K17/40B09C1/08B09C2101/00
Inventor 杨生哲裴启东朱文浩王伟孟藤藤蔡亚菱周雨徐瑶
Owner JIANGSU TIANSHENG ENVIRONMENTAL TECH CO LTD
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