Expandable air barrier device and method of using same for injection remediation of underground water pollution

A gas barrier and expansion type technology, applied in the field of in-situ repair of groundwater pollution, can solve the problems of complex structure of supporting equipment, non-reusable, difficult operation, etc., and achieve obvious barrier effect, reliable sealing and low cost of use Effect

Active Publication Date: 2012-06-27
BEIJING MUNICIPAL RES INST OF ENVIRONMENT PROTECTION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides an inflatable gas barrier device and its injection repair method for groundwater pollution, to solve the technical problems of complex structure, non-reusable, high cost and difficult operation of existing supporting equipment used in air injection technology

Method used

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  • Expandable air barrier device and method of using same for injection remediation of underground water pollution
  • Expandable air barrier device and method of using same for injection remediation of underground water pollution
  • Expandable air barrier device and method of using same for injection remediation of underground water pollution

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Embodiment Construction

[0038] Examples see Figure 1~3 As shown, this inflatable gas barrier device includes a main gas injection pipe 7, and the middle part of the main gas injection pipe 7 is covered with a rubber cartridge assembly 6 made of elastic material; There is a set of rubber cartridge joints, protective sleeves, intermediate joints, and connecting sleeves. The rubber cartridge assembly 6 is made of rubber, and the rest of the device is made of 35CrMo alloy structural steel.

[0039] see figure 2As shown, the upper nozzle of the rubber cartridge assembly 6 is set on the outer side of the lower part of the rubber cartridge joint I5, and the protective sleeve I4 is set on the outer side of the upper nozzle of the rubber cartridge assembly 6 and is clamped with the middle part of the outer wall of the rubber cartridge joint I5. The upper opening of the protective cover I4 is provided with an inner edge, and the middle part of the outer wall of the rubber tube joint I5 has a flange, and th...

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Abstract

The invention discloses an expandable air barrier device and a method of using the same for injection remediation of underground water pollution. The expandable air barrier device comprises a main air injection pipe, a rubber cylinder assembly made of elastic materials is sleeved to the middle of the main air injection pipe, and a group of rubber cylinder connectors, protection sleeves, middle connectors and connecting sleeves are symmetrically sleeved on the upper portion and the lower portion of the rubber cylinder assembly of the main air injection pipe. The connecting sleeve I is connected between the middle connector I and the upper connector, the upper connector is provided with an upper port used for connecting the main air injection pipe with an external air injection pipe, an inflating port is arranged beside the upper port, the upper end of the inflating port is connected with an external inflating pipe, and the lower end of the inflating port extends downward to be communicated with an air injection cavity. Quick and one-way air injection in an air injection well can be guaranteed by means of the expandable air barrier device and the method, and the requirements of large-scale in-situ remediation of underground water in volatile organic pollutant areas by air injection technique can be met. Further, the expandable air barrier device and the method promote development of the underground water air injection technique and have wide application prospect.

Description

technical field [0001] The invention belongs to the field of in-situ restoration of groundwater pollution, and in particular relates to an inflatable gas barrier device applied to groundwater air injection technology and a use method thereof. Background technique [0002] At present, air injection technology is widely used in the world to remediate groundwater volatile organic pollutants in polluted sites. This technology adopts the direct injection method, injecting compressed air into the saturated area of ​​groundwater and blowing off, so that the pollutants rise into the unsaturated area with the compressed air, and the gaseous pollutants can be treated by biodegradation in the unsaturated area, or directly pumped out for follow-up deal with. Its essence is that volatile pollutants are transferred from the liquid phase to the gas phase and removed in the gas phase. When using air injection technology to remediate groundwater, it is necessary to construct an air injecti...

Claims

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Application Information

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IPC IPC(8): C02F3/02
CPCY02W10/10
Inventor 张丹姚珏君姜林
Owner BEIJING MUNICIPAL RES INST OF ENVIRONMENT PROTECTION
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