In-situ soil and underground water integrated remediation system and remediation method

A technology for remediation system and groundwater, which is applied in the restoration of polluted soil and other directions to achieve the effects of short restoration period, convenient operation and good degradation effect.

Pending Publication Date: 2018-08-24
内蒙古睿达鑫科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, about a combination of extraction-treatment, extraction-injection integration, groundwater circulation well, consideration of the advantages of gas-liquid pollutant treatment, ozone-hydrogen peroxide combined oxidation and in-situ oxidation remediation, the integration of simultaneous treatment of soil and groundwater The system or method has not been reported yet

Method used

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  • In-situ soil and underground water integrated remediation system and remediation method
  • In-situ soil and underground water integrated remediation system and remediation method

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Pilot test of wastewater reactor: according to the attached figure 2 Manufacturing wastewater reactor, the length of the wastewater reactor is 1m, the diameter is 0.1m, 9 baffles are installed inside the reactor, the baffle height is 0.07m, and the interval is 0.1m; it is equipped with chloroethylene and trichloroethylene solutions, and the initial concentration is equal 10mg / L; inject vinyl chloride and trichloroethylene solution into the wastewater reactor with a flow rate of 5m 3 / h Inject ozone and hydrogen peroxide at the same time. The mass percentages of ozone and hydrogen peroxide are respectively 0.05% and 0.25%. At the same time, water is collected at the outlet of the reactor, and the concentration of chloroethylene and trichloroethylene in the effluent is measured every 5 minutes. The experimental results are shown in Table 1.

[0048] Table 1 The concentration of benzo(a)pyrene at the outlet of the wastewater reactor in the pilot experiment

[0049] Time (m...

Embodiment 2

[0052] On-site application of restoration site: The restoration site in this embodiment is a contaminated site in Qingpu District, Shanghai, with a contaminated area of ​​230m 2 The pollutants are soil and groundwater, and the pollutants are benzopyrene, vinyl chloride, trichloroethylene and total petroleum hydrocarbons. The pollution depth is 4-8m. The maximum pollutant concentration in the soil is 0.5-8.0mg / kg. Groundwater The maximum concentration of pollutants in the soil is 2-30mg / L, and the following systems and methods are used to repair soil and groundwater:

[0053] In-situ soil and groundwater integrated remediation system ( figure 1 ) Including extraction-injection system, ozone generation system, wastewater treatment system, waste gas treatment system, hydrogen peroxide configuration system, each system is connected through corresponding pipelines, and is equipped with corresponding liquid flow meters and gas flow meters. The extraction-injection system includes an int...

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PUM

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Abstract

The invention relates to the field of environmental protection, in particular to an in-situ soil and underground water integrated remediation system and remediation method. The system comprises an extraction-injection system, an ozone generation system, a wastewater treatment system, a waste gas treatment system and a hydrogen peroxide configuration system. The extraction-injection system, the ozone generation system, the wastewater treatment system, the waste gas treatment system and the hydrogen peroxide configuration system are connected through corresponding pipelines and are equipped withcorresponding liquid flow meters and gas flow meters. According to the method, through combination with the advantages of extraction-treatment, extraction-injection integration, an underwater circulating well, gas-liquid pollutant treatment, ozone-hydrogen peroxide combined oxidation and in-situ oxidation, polluted underground water is extracted and then is subjected to oxidation treatment through ozone and hydrogen peroxide; and then the treated water containing the ozone and hydrogen peroxide is injected underground to conduct in-situ oxidation remediation. By means of the method, organic polluted soil and underwater can be restored simultaneously. Moreover, the remediation range is wide, the remediation period is short, the cost is low, and operation is convenient.

Description

Technical field [0001] The invention relates to the technical field of soil and groundwater restoration in environmental protection, in particular to an in-situ soil and groundwater integrated restoration system and restoration method. Background technique [0002] In recent years, the pollution of soil and groundwater has aroused widespread public concern. Pollutants in soil and groundwater are likely to cause serious harm to nearby human bodies and the surrounding environment, and even endanger lives in severe cases. Organic pollutants are the most common type of pollutant. In recent years, there have been more and more cases of soil and groundwater being organically polluted at the same time. The restoration of complex contaminated sites has become more and more troublesome. Therefore, it is necessary to develop reasonable restoration equipment for the restoration of contaminated soil and groundwater, so as to avoid potential safety hazards. [0003] Traditional repair techniqu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00B09C1/08
CPCB09C1/002B09C1/005B09C1/08B09C2101/00
Inventor 刘大军孔涛
Owner 内蒙古睿达鑫科技有限责任公司
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