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Underground water multi-phase extraction restoration device and method

A groundwater and surface technology, which is applied in the direction of contaminated groundwater/leachate treatment, chemical instruments and methods, water pollutants, etc., can solve the problems that cannot solve the pollution of soil vadose zone, and avoid the heterogeneity of natural media Problems, improvement of repair efficiency, and effect of increasing contact area

Inactive Publication Date: 2016-01-20
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in this application is to provide a groundwater multiphase extraction and repair device and method, by setting a pump head in the main well protruding from the groundwater pollution plume, the groundwater is extracted from the pollution plume from the pump head At the same time, the air extraction equipment is used to extract the polluted gas from the inclined well through the soil aerated zone, which solves the problem that the current groundwater multiphase extraction and restoration device cannot solve the problem of the soil aerated zone in the process of completing the restoration of groundwater pollution. pollution problem

Method used

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  • Underground water multi-phase extraction restoration device and method
  • Underground water multi-phase extraction restoration device and method

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Embodiment

[0035] Example description

[0036] The groundwater multiphase extraction and restoration device and method thereof disclosed in the present application are mainly applicable to areas where groundwater is polluted by organic matter, such as groundwater near gas stations. Groundwater is drawn from the plume by pumping equipment, and organic pollutants are drawn to the surface. At the same time, the air extraction equipment will extract the polluted gas that has volatilized into the vadose zone to the surface. In order to improve the restoration efficiency of groundwater, this application injects surfactant into the pollution plume through surfactant injection equipment, reduces the surface tension of the polluted gas dissolved in groundwater, increases its volatilization rate, and traps air entrained air The rate of polluted gas in the zone also increases correspondingly, completing the remediation of polluted groundwater and the removal of polluted gas in the soil vadose zo...

specific Embodiment

[0038] Such as figure 1 As shown, it is a schematic cross-sectional structure diagram of a groundwater multiphase extraction and repair device according to an embodiment of the present application. The groundwater multiphase extraction and repair device includes an underground well 10 , pumping equipment 20 and air pumping equipment 30 .

[0039] refer to figure 1 — Figure 6 , the underground well 10 includes a main well 110 and a plurality of inclined wells 120, the bottom of the main well 110 extends into the pollution plume 40, and a plurality of screen holes 1101 are opened on the well wall submerged in the pollution plume 40, the The top of the main well 110 is sealed by a hollow conversion sealing cover 50; the plurality of inclined wells 120 are between the underground water level and the ground, and one end is connected to the main well 110, and has an included angle with the main well 110, The end of the inclined well 120 away from the main well 110 is provided wit...

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Abstract

The invention discloses an underground water multi-phase extraction restoration device and method. The underground water multi-phase extraction restoration device comprises an underground well, water pumping equipment and gas extraction equipment, wherein the underground well comprises a main well and a plurality of inclined wells; the main well is arranged on the ground; the bottom of the main well is immersed into a pollution plume; the inclined wells are arranged at an aeration zone; the water pumping equipment comprises a water pumping pump, a water pumping pipe and a water pumping pump head; the water pumping head is arranged on the ground; the water pumping pipe is connected with the water pumping pump and extends into the region, immersed into the pollution plume, of the main well; the water pumping pump head is arranged in the part, immersed into the pollution plume, of the water pumping pipe; the gas extraction equipment comprises a gas extraction machine and a gas extraction pipeline; the gas extraction machine is arranged on the ground; one end of the gas extraction pipeline is connected with the gas extraction machine; the other end of the gas extraction pipeline is connected with a sub gas extraction pipeline extending deep into the inclined wells, wherein the water pumping equipment pumps underground water from the pollution plume; the gas extraction equipment extracts pollution gas onto the ground surface from the aeration zone; the restoration efficiency can be effectively improved; in addition, the pollution gas in the aeration zone in underground water pollution restoration process can be exhausted.

Description

technical field [0001] The application relates to groundwater pollution restoration, in particular to a groundwater multiphase extraction restoration device and method. Background technique [0002] At present, the prevention and control of groundwater pollution in our country has the difficulty of long repair period and large investment due to the hidden nature of pollution, complexity and difficulty in effective repair. The remediation technology of groundwater organic pollutants has become the focus of research on the prevention and control of groundwater pollution in the world. The problems existing in the remediation technology of groundwater pollution gas at the current stage are: the influence radius of the pumping well is limited, and at the same time, the process of pumping water may cause abnormalities due to the medium priority channel. Qualitative problems, resulting in increased workload and poor repair results. Especially when the groundwater is polluted but t...

Claims

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Application Information

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IPC IPC(8): C02F1/00C02F1/20B09C1/00C02F101/30C02F103/06
Inventor 姜永海席北斗杨昱廉新颖马志飞孟繁华徐祥健
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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