CN216038729U - Underground water air injection well group - Google Patents
Underground water air injection well group Download PDFInfo
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- CN216038729U CN216038729U CN202120881701.6U CN202120881701U CN216038729U CN 216038729 U CN216038729 U CN 216038729U CN 202120881701 U CN202120881701 U CN 202120881701U CN 216038729 U CN216038729 U CN 216038729U
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Abstract
The utility model belongs to the field of in-situ remediation of polluted underground water, and particularly relates to an underground water air injection well group, which comprises an injection well group and a pollutant extraction well group; the injection well group comprises a plurality of injection wells which are uniformly arranged along the diffusion axial direction of the pollutants; the injection well comprises an injection inner well pipe, an aeration head arranged in the injection inner well pipe, an aeration pipeline connected with the aeration head and an air compressor connected with the aeration pipeline; the pollutant extraction well group comprises a plurality of auxiliary extraction wells; the auxiliary extraction wells are uniformly distributed around the injection well; the utility model provides a groundwater air injection well crowd injects the air into the groundwater of pollution through the injection well, then utilizes to extract the well and will carry out the tail gas treatment by the volatile organic pollutant that the air injection blows off through the vacuum pump extraction back, has effectively caught the pollutant, has prevented the diffusion of pollutant.
Description
Technical Field
The utility model belongs to the field of in-situ remediation of polluted underground water, and particularly relates to an underground water air injection well group.
Background
With the increasing development of national economy, pollution type industrial enterprises such as chemical plants, petroleum enterprises and the like are continuously appeared, moved and closed, so that pollution sites are continuously appeared and increased, wherein the pollution of organic pollutants to underground water is the most common pollution problem.
The existing remediation technologies for solving the environmental problem of organic pollutants polluting underground water comprise an in-situ oxidation technology, an in-situ reduction technology, a pumping-treatment technology, a permeable reactive barrier technology, a microbiological technology, a natural attenuation technology and the like. With continuous innovation and development of remediation technologies, the underground water air injection technology becomes a common technical means for remediating polluted sites at present. In an extraction well in a polluted site, organic gas in an aeration zone is collected and led out through an auxiliary extraction well, so that the method is a common method for repairing polluted underground water.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an underground water-air injection well group.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an underground water-air injection well group comprises an injection well group and a pollutant extraction well group;
the injection well group comprises a plurality of injection wells which are uniformly arranged along the diffusion axis of the pollutant; the injection well comprises an injection inner well pipe, an aeration head arranged in the injection inner well pipe, an aeration pipeline connected with the aeration head and an air compressor connected with the aeration pipeline; the side wall of the bottom of the injection inner well pipe is provided with an injection flower hole;
the pollutant extraction well group comprises a plurality of auxiliary extraction wells; the auxiliary extraction wells are uniformly distributed around the injection well; the side wall of the auxiliary extraction well is provided with extraction well flower holes; the bottom of the auxiliary extraction well is arranged on a ground water level line; an extraction auxiliary pipeline is arranged in the auxiliary extraction well; the extraction auxiliary pipeline is connected with a vacuum pump.
An injection outer well pipe is arranged outside the injection inner well pipe; the side wall of the injection outer well pipe is provided with an outer well pipe flower hole; the bottom of the injection outer well pipe is arranged on a ground water level line; an extraction pipe is arranged in the outer well pipe; the extraction pipe is connected with a vacuum pump; the bottom of the injection outer well pipe is connected with the injection inner well pipe in a sealing way.
A plurality of aeration pipes are communicated with the aeration main pipe; the aeration main pipe is connected with an air compressor.
The vacuum pump is connected with the tail gas treatment device.
The distance between the extraction well and the injection well is 2-5 m.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model provides a groundwater air injection well crowd injects the air into the groundwater of pollution through the injection well, then utilizes to extract the well and will carry out the tail gas treatment by the volatile organic pollutant that the air injection blows off through the vacuum pump extraction back, has effectively caught the pollutant, has prevented the diffusion of pollutant. As a preferred form, an injection outer well pipe is arranged outside the injection inner well pipe, and the air injection function and the extraction function in the aeration zone can be integrated in a closed space formed by the injection outer well pipe and the injection inner well pipe, so that the overall repair efficiency is improved, and the repair cost and the maintenance cost are reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of a groundwater air injection well group according to the present invention;
FIG. 2 is a schematic top view of a groundwater air injection well cluster according to the utility model;
FIG. 3 is a schematic diagram of a groundwater air injection well cluster according to the present invention with an injection outer well pipe.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.
FIG. 1 illustrates an underground water-air injection well cluster, including an injection well cluster and a contaminant extraction well cluster;
the injection well group comprises a plurality of injection wells which are uniformly arranged along the diffusion axis of the pollutant; the injection well comprises an injection inner well pipe 4, an aeration head 9 arranged in the injection inner well pipe, an aeration pipeline connected with the aeration head and an air compressor 1 connected with the aeration pipeline; an injection flower hole 10 is arranged on the side wall of the bottom of the injection inner well pipe;
the pollutant extraction well group comprises a plurality of auxiliary extraction wells 5; the auxiliary extraction wells are uniformly distributed around the injection well; the side wall of the auxiliary extraction well is provided with extraction well flower holes; the bottom of the auxiliary extraction well is arranged on a ground water level line; an extraction auxiliary pipeline is arranged in the auxiliary extraction well; the extraction auxiliary pipeline is connected with the vacuum pump 2. The vacuum pump is connected with the tail gas treatment device 3.
The underground water-air injection well group has the following implementation mode: a. the number of the air injection wells is determined according to the hydrogeological conditions and the pollution halo range of the underground water polluted area, for example, the number is 4, the well positions of the air injection wells are determined, the well depth is 12m, and finally the distance of the air injection wells is set to be 5 m. b. A plurality of auxiliary extraction wells 5 are provided near the air injection well according to the hydrogeological conditions and the pollution halo range of the groundwater polluted area. c. The injection well group is injected into an injection flower hole at the bottom of the inner well pipe through air by an aeration head connected with an aeration pipeline through the same air compressor 1 to carry out in-situ aeration, meanwhile, a vacuum pump 2 is utilized to collect the polluted gas collected in the auxiliary extraction well through an extraction auxiliary pipeline, and the polluted gas is treated by a tail gas treatment device 3.
Fig. 2-3 show another way of providing an injection outer well pipe 7 outside said injection inner well pipe 4; the side wall of the injection outer well pipe is provided with an outer well pipe flower hole; the bottom of the injection outer well pipe is arranged on a ground water level line; an extraction pipe is arranged in the outer well pipe; the extraction pipe is connected with a vacuum pump; the bottom of the injection outer well pipe is connected with the injection inner well pipe in a sealing way. A plurality of aeration pipes are communicated with the aeration main pipe; the aeration main pipe is connected with an air compressor. The distance between the extraction well and the injection well is 2-5 m. The underground water-air injection well group is similar to the embodiment shown in fig. 1, and the specific differences are that: an extraction pipe is integrated outside the injection inner well pipe, and can work simultaneously with an external auxiliary extraction pipe, so that the working efficiency is improved, and the diffusion of organic pollution gas is avoided.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (5)
1. An underground water-air injection well group is characterized by comprising an injection well group and a pollutant extraction well group;
the injection well group comprises a plurality of injection wells which are uniformly arranged along the diffusion axis of the pollutant; the injection well comprises an injection inner well pipe, an aeration head arranged in the injection inner well pipe, an aeration pipeline connected with the aeration head and an air compressor connected with the aeration pipeline; the side wall of the bottom of the injection inner well pipe is provided with an injection flower hole;
the pollutant extraction well group comprises a plurality of auxiliary extraction wells; the auxiliary extraction wells are uniformly distributed around the injection well; the side wall of the auxiliary extraction well is provided with extraction well flower holes; the bottom of the auxiliary extraction well is arranged on a ground water level line; an extraction auxiliary pipeline is arranged in the auxiliary extraction well; the extraction auxiliary pipeline is connected with a vacuum pump.
2. A groundwater air injection well group according to claim 1, wherein an injection outer well pipe is provided outside the injection inner well pipe; the side wall of the injection outer well pipe is provided with an outer well pipe flower hole; the bottom of the injection outer well pipe is arranged on a ground water level line; an extraction pipe is arranged in the injection outer well pipe; the extraction pipe is connected with a vacuum pump; the bottom of the injection outer well pipe is connected with the injection inner well pipe in a sealing way.
3. A groundwater air injection well group as claimed in claim 1, wherein a plurality of aeration pipes are in communication with an aeration header; the aeration main pipe is connected with an air compressor.
4. A groundwater air injection well group as claimed in claim 1, wherein the vacuum pump is connected to a tail gas treatment device.
5. A groundwater air injection well group as claimed in claim 1, wherein the extraction well is spaced from the injection well by 2-5 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120881701.6U CN216038729U (en) | 2021-04-27 | 2021-04-27 | Underground water air injection well group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120881701.6U CN216038729U (en) | 2021-04-27 | 2021-04-27 | Underground water air injection well group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216038729U true CN216038729U (en) | 2022-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120881701.6U Active CN216038729U (en) | 2021-04-27 | 2021-04-27 | Underground water air injection well group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216038729U (en) |
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2021
- 2021-04-27 CN CN202120881701.6U patent/CN216038729U/en active Active
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