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Method for controlling pollution of ground water of sulfate polluted site and remediating soil

A groundwater pollution and soil remediation technology, which is applied in the field of groundwater pollution control and soil remediation in sulfate-contaminated sites, can solve the problems of high operating costs, low treatment efficiency, and less involvement of sulfate treatment, so as to improve efficiency and reduce treatment costs Effect

Active Publication Date: 2015-06-03
上海骄阳环境工程有限公司
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Problems solved by technology

However, the existing treatment system has the characteristics of high operating cost, complex structure, and low treatment efficiency, and the treatment of sulfate in groundwater polluted by the site involves less

Method used

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  • Method for controlling pollution of ground water of sulfate polluted site and remediating soil
  • Method for controlling pollution of ground water of sulfate polluted site and remediating soil
  • Method for controlling pollution of ground water of sulfate polluted site and remediating soil

Examples

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Embodiment 1

[0027] Example 1: Treatment of Sulfate Pollution in Groundwater of an Abandoned Chemical Site in Dongying City, Shandong Province

[0028] Because the sulfate ion content in the sewage discharged by the chemical plant seriously exceeded the standard, and the bottom and sides of the drainage ditch were not treated for water isolation or seepage prevention, the pollutants leaked into the soil and underground aquifer through the drainage ditch. The sulfate ion content in groundwater exceeds 10000mg / L, which has caused serious pollution to soil and groundwater. The specific governance steps are as follows:

[0029] (1) Set up the anti-seepage and sewage separation wall.

[0030] Since the most direct pollution source is located on the south side of the site, although the pollution source of the chemical plant has been closed for many years, the pollution in the south of the site is still very serious. An "L"-shaped "separation wall" is set between the south side of the site and ...

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Abstract

The invention discloses a method for controlling pollution of ground water of a sulfate polluted site and remediating soil. The method mainly comprises the following steps: (1) building an isolating wall between the site and a pollutant source; (2) performing pollution control by adopting a hydraulic capture technology; and (3) pumping water, injecting water and stopping pumping and injecting in a reciprocating manner for 3 times, and performing water quality monitoring to achieve the aim of controlling the pollution of the ground water and remediating soil. The method disclosed by the invention is used for comprehensively controlling ground water sulfate pollution by combining an anti-seepage dirt isolating wall, the hydraulic capture technology and a coagulation-sedimentation method, and can be used for effectively removing sulfate ions from polluted ground water. The hydraulic capture technology in the method disclosed by the invention adopts a hydraulic control method to gradually eliminate polluted ground water bodies, and the ground water pumped out by using an inner circular layer by the system is relatively small in volume, thereby reducing the treatment cost while ensuring that pollution plumes cannot exceed an isolation belt.

Description

technical field [0001] The invention belongs to groundwater pollution treatment and soil restoration, in particular to a method for groundwater pollution treatment and soil restoration in sulfate polluted sites. Background technique [0002] Water is an important resource for human survival. Sulfate ions are ubiquitous in natural water bodies, mainly from minerals in the formation. However, with the rapid development of the daily chemical industry, the problem of sulfate pollution is becoming more and more serious. Due to improper discharge during industrial production, high-concentration sulfate wastewater seeps into soil and underground aquifers for a long time, destroying soil structure, reducing soil fertility, and posing a threat to drinking water safety and the ecological environment. Sulfate erosion is also one of the main reasons for the deterioration of reinforced concrete structures. High concentrations of sulfate will cause damage to ground buildings and undergro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/58C02F1/52B09C1/02
Inventor 周念清代朝猛赵姗
Owner 上海骄阳环境工程有限公司
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