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Underground water remediation method

A technology for groundwater remediation and underground aquifers, applied in the field of groundwater treatment, can solve problems such as high cost and low removal efficiency of groundwater organic pollutants, and achieve the effects of low cost, improved remediation efficiency, and simple equipment

Active Publication Date: 2021-04-16
安徽国祯环境修复股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Therefore, the technical problem to be solved in the present invention is that the existing groundwater in-situ restoration method has a high cost and the defect that the removal efficiency of organic pollutants in groundwater is low, and then a groundwater restoration method is proposed

Method used

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Embodiment 1

[0036] Such as figure 1 As shown, the present embodiment provides a groundwater restoration method, comprising the following steps:

[0037] 1) Inject ozone into the underground aquifer through the ozone channel in the integrated dual-channel injection well, then inject hydrogen peroxide into the underground aquifer through the chemical channel in the integrated dual-channel injection well, and finally inject the fly ash slurry through the integrated dual-channel injection The chemical channel in the well is injected into the underground aquifer;

[0038] 2) Repeat step 1) until the groundwater quality meets the standard requirements. The standard requirements of groundwater quality in the present invention are determined according to the use of groundwater.

[0039] Preferably, the ozone injection flow rate is 100-300g / h, the hydrogen peroxide injection flow rate is 0.5-5L / h, and the fly ash slurry injection flow rate is 0.01-0.1L / h.

[0040] Preferably, the ozone injectio...

Embodiment 2

[0053] This example provides a groundwater remediation method. Taking the pilot experiment of in-situ injection of groundwater in a coking plant as an example, the test area is mainly polluted by benzene. The area of ​​the test area is about 100㎡. According to the results of the previous site investigation, the underground aquifer in the restoration area is located at 9-12m underground, mainly composed of silt-fine sand, with an average permeability coefficient of 1.29×10 -3 cm / s; According to the pollution distribution of the experimental area, an integrated dual-channel injection well was chosen to be built in the groundwater pollution area, in which the aeration head connected to the ozone channel was located at 10-10.7m underground;

[0054] The groundwater remediation method includes the following methods:

[0055] 1) Inject ozone into the underground aquifer through the ozone channel in the integrated dual-channel injection well, the ozone injection flow rate is 200g / h...

Embodiment 3

[0060] This example provides a groundwater remediation method. Taking the pilot experiment of in-situ injection of groundwater in a coking plant as an example, the test area is mainly polluted by benzene. The area of ​​the test area is about 100㎡. According to the results of the previous site investigation, the underground aquifer in the restoration area is located at 9-12m underground, mainly composed of silt-fine sand, with an average permeability coefficient of 1.29×10 -3 cm / s; According to the pollution distribution of the experimental area, an integrated dual-channel injection well was chosen to be built in the groundwater pollution area, in which the aeration head connected to the ozone channel was located at 10-10.7m underground;

[0061] The groundwater remediation method includes the following methods:

[0062] 1) Inject ozone into the underground aquifer through the ozone channel in the integrated dual-channel injection well. The ozone injection flow rate is 300g / h...

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Abstract

The invention belongs to the technical field of underground water treatment, and particularly relates to an underground water remediation method. The groundwater remediation method provided by the invention comprises the following steps: 1) injecting ozone into an underground aquifer through an ozone channel in an integrated double-channel injection well, then injecting hydrogen peroxide into the underground aquifer through a medicament channel in the integrated double-channel injection well, and injecting the coal ash slurry into the underground aquifer through a medicament channel in the integrated double-channel injection well. 2) repeating the operation in the step 1) until the underground water quality meets the standard requirements. The groundwater remediation method provided by the invention is low in cost, and the removal efficiency of organic pollutants in groundwater can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of groundwater treatment, and in particular relates to a groundwater restoration method. Background technique [0002] At present, commonly used groundwater remediation technologies for contaminated sites include ex-situ and in-situ remediation techniques, which determines that remediation equipment for contaminated sites can also be divided into in-situ remediation devices and ex-situ remediation devices. Due to the obvious shortcomings such as secondary pollution in the process of ex-situ disposal, in-situ remediation technology has been widely used in recent years. [0003] In-situ treatment technology is a hotspot in the research of groundwater pollution control technology. It not only saves the cost of treatment, but also reduces the surface treatment facilities, minimizes the exposure of pollutants, and reduces the disturbance to the environment. It is a promising groundwater treatment technology. pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F103/06
CPCY02W10/10
Inventor 王建飞李伟平李宝铸谢荣焕杜欢夏晓武夏太保孟平
Owner 安徽国祯环境修复股份有限公司
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