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Deep stirring injection remediation method based on in-situ oxidation remediation of soil

A technology for deep stirring and soil remediation, applied in the restoration of polluted soil, etc., can solve the problems of unsatisfactory application effect, slow penetration of chemical reagents, insufficient contact, etc., to achieve sufficient contact, reasonable method design, and construction consumption. short time effect

Active Publication Date: 2022-04-12
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application effect of this technology is not very satisfactory, the penetration of chemical reagents is slow and the contact is not sufficient, and it takes a long time

Method used

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  • Deep stirring injection remediation method based on in-situ oxidation remediation of soil
  • Deep stirring injection remediation method based on in-situ oxidation remediation of soil
  • Deep stirring injection remediation method based on in-situ oxidation remediation of soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Embodiment 1: A deep stirring injection repair method based on in-situ oxidation repair soil, specifically including:

[0050] S1: Preliminary soil preparation

[0051] S1-1: On-site deep sampling and analysis

[0052] Set soil sampling holes, take samples and analyze the collected soil samples;

[0053] S1-2: Preparation of oxidizing agents

[0054] According to the results of soil sample analysis, accurately determine the pollution concentration at each depth in different areas, and further adjust the amount of oxidizing agent used for soil restoration;

[0055] S1-3: Segmentation of the soil to be remediated

[0056] According to the pollution concentration, a simple segmentation module is set on the area to be repaired to divide the area to be repaired into different area modules according to different pollution degrees; then configure the required oxidizing agents in the corresponding area modules;

[0057] S2: Pre-protection processing

[0058] S2-1: Site Lev...

Embodiment 2

[0077] Embodiment 2: A deep stirring injection repair method based on in-situ oxidation repair soil, specifically including:

[0078] S1: Preliminary soil preparation

[0079] S1-1: On-site deep sampling and analysis

[0080] Set soil sampling holes, take samples and analyze the collected soil samples;

[0081] S1-2: Preparation of oxidizing agents

[0082] According to the results of soil sample analysis, the concentration of pollution at each depth in different regions is accurately determined, and the amount of oxidizing agent used for repairing the soil is further adjusted; the oxidizing agent is specifically a mixture of persulfate and transition metal ions;

[0083] S1-3: Segmentation of the soil to be remediated

[0084] According to the pollution concentration, a simple segmentation module is set on the area to be repaired to divide the area to be repaired into different area modules according to different pollution degrees; then configure the required oxidizing age...

Embodiment 3

[0106] Embodiment 3: The difference from Embodiment 2 is that the oxidizing agent is specifically a mixture of persulfate and strong alkali.

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Abstract

The invention relates to the technical field of soil remediation, in particular to a deep stirring injection remediation method based on in-situ oxidation remediation soil, which specifically comprises the following steps: early-stage soil blending: sampling and analyzing on-site deep soil, and then blending an oxidation agent; segmenting the to-be-remediated soil according to an analysis result; field leveling is conducted on the to-be-remediated area, surface obstacles are removed, then surface water and shallow soil are sampled, the pollution concentration is detected, and remediation treatment is conducted; carrying out remediation treatment on the deep soil by adopting an in-situ injection deepening layer stirring mode; the method is reasonable in design, the deep soil is violently disturbed on the basis of in-situ injection, the contact radius of the oxidizing agent and the soil can be enlarged, the problem that the chemical oxidizing agent makes full contact with pollutants in the soil is effectively solved, and the chemical oxidizing agent is rapidly and effectively migrated into the polluted soil.

Description

technical field [0001] The invention relates to the technical field of deep soil repair, in particular to a deep stirring injection repair method based on in-situ oxidation repair soil. Background technique [0002] Organic pollution of soil is one of the main types of soil pollution. Sources of organic pollutants in soil include industrial spills and spills, leaks from oil depots and chemical depots, abuse of pesticides, random disposal of detergents, oils, antifreeze, and improper domestic waste. Disposal, landfills and dumps, etc. A large amount of organic matter is released into the soil environment every year, including polycyclic aromatic hydrocarbons, petroleum, pesticides, polychlorinated biphenyls, chloral, methane, etc., most of which are insoluble, toxic, and mutagenic , even carcinogenic, and have great harm to human health and ecosystems. [0003] Polycyclic aromatic hydrocarbons are a typical type of organic pollutants in soil. Although it exists in trace am...

Claims

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Application Information

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IPC IPC(8): B09C1/00B09C1/02B09C1/08
Inventor 张亚刘国强李旭伟王荐胡哲伟王祥孙丽
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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