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In-situ remediation system and method for perfluorinated compound polluted underground water

A perfluorinated compound, in-situ remediation technology, applied in the treatment of polluted groundwater/leachate, chemical instruments and methods, water pollutants, etc., can solve the problems of perfluorinated compound pollution, etc. , the effect of low energy consumption

Active Publication Date: 2022-04-22
森特士兴环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003]Aiming at the deficiencies of the existing technology, it solves the problem of groundwater pollution caused by perfluorinated compounds, and provides a feasible in-situ purification technology, which has little disturbance to groundwater, simple structure and high-efficiency treatment. A system and method for in-situ remediation of groundwater polluted by perfluorinated compounds

Method used

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  • In-situ remediation system and method for perfluorinated compound polluted underground water
  • In-situ remediation system and method for perfluorinated compound polluted underground water

Examples

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Embodiment 1

[0036] like figure 1 As shown, the present invention is an in-situ remediation system for perfluorinated compound-contaminated groundwater, which includes multiple groundwater wells 1 and above-ground remediation devices 2, and several water inlets 11 are arranged on the wall of the groundwater well 1 located in the area below the groundwater level The groundwater well 1 is also provided with a drug injection pipe 3, an aeration pipe 4, and a foam extractor 5 connected to the above-ground repair device 2. The lower part of the aeration pipe 4 is inserted below the groundwater level, and the foam extractor 5 is floatingly arranged on the At the groundwater surface, it is used to collect the floating foam generated on the water level surface, and transport the collected foam to the ground restoration device 2 for treatment.

[0037] The groundwater well 1 penetrates from the ground surface to below the groundwater level until the restoration depth. The well body is provided with...

Embodiment 2

[0047] In this embodiment, on the basis of embodiment 1, the structural form of active extraction and repair is added, such as figure 2 As shown, a packer 6 is also provided in the groundwater well 1, which divides the groundwater well 1 into upper and lower parts. The packer 1 is preferably arranged below the groundwater level, and the groundwater well 1 above the packer 6 also A reactor 7 is provided, and a number of outfalls 12 are provided on the ring wall of the groundwater well 1 between the reactor 7 and the packer 6; the foam extractor 5 is arranged in the reaction chamber of the reactor 7, and the aeration pipe 4 and the injection pipe 3 are inserted into the reaction chamber of the reactor 7, and the bottom of the reactor 7 is provided with a drainage control valve 8, and the groundwater located below the packer 6 is transported into the reactor 7 through a pumping device 9.

[0048] In Embodiment 2, a reactor and a pumping device 9 are added to the groundwater well...

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Abstract

The invention discloses an in-situ remediation system and method for groundwater polluted by perfluorinated compounds, the system comprises a plurality of groundwater wells and an overground remediation device, and a plurality of water inlets are formed in the well walls of the groundwater wells located in the area below the groundwater level; a chemical injection pipe, an aeration pipe and a foam extractor which are connected with the overground repairing device are further arranged in the underground water well, the lower portion of the aeration pipe is inserted below the underground water level, and the foam extractor is arranged on the underground water surface in a floating mode and conveys collected foam into the overground repairing device; the method comprises the following steps: quantitatively injecting a surfactant with high affinity with a perfluorinated compound into each underground water well; aeration is conducted on underground water through the aeration pipe, and foam is formed at the water level of the underground water well; foam is collected by the floating foam extractor and pumped into the overground repairing device to be processed into liquid, a large amount of underground water does not need to be pumped, disturbance to the environment is small, energy consumption is small, a large amount of auxiliary facilities and processing materials are omitted, and cost is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of groundwater restoration, and in particular relates to an in-situ restoration system and method for groundwater polluted by perfluorinated compounds. Background technique [0002] With the rapid development of industry and the mass production and use of various chemicals, the hazards of some new pollutants to public health and the ecological environment are gradually emerging. Among them, perfluorinated compounds are widely used in different products due to their water and oil repellency and stability. However, perfluorinated compounds are persistent and bioaccumulative, and also have reproductive toxicity, mutagenic toxicity, developmental toxicity, neurotoxicity, and immunotoxicity. They are a type of environmental pollutants with systemic multi-organ toxicity. In my country's 14th Five-Year Plan, relevant requirements have been put forward for "emphasis on the treatment of new pollutants", and most of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/58C02F103/06C02F101/14
CPCC02F1/583C02F2103/06C02F2101/14
Inventor 李彦希朱焰张大定陈默叶渊
Owner 森特士兴环保科技有限公司
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