Groundwater monitoring well device and groundwater sampling method

A groundwater and monitoring well technology, which is applied in sampling devices, testing water, material inspection products, etc., can solve the problem of low well construction efficiency, inability to meet the requirements of groundwater environmental surveys in polluted sites, and inability to meet the environmental requirements of water filter sampling and well cleaning methods. Investigate and repair problems to achieve the effect of high well construction efficiency

Pending Publication Date: 2019-08-20
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These public technologies are mainly used in hydrogeological surveys, and are rarely used in the investigation of groundwater environment in polluted sites; when used in polluted sites, they often fail to meet the requirements of groundwater environmental surveys in polluted sites, which are mainly reflected in the following aspects
First, the main purpose of traditional hydrogeological surveys is water resource issues, and less attention is paid to pollutants in water, and the characteristics of microcosmic, polluting, heterogeneous and complex environmental processes of pollutants are not fully considered. Design, sampling for different pollutants, well cleaning methods, etc.

Method used

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  • Groundwater monitoring well device and groundwater sampling method
  • Groundwater monitoring well device and groundwater sampling method
  • Groundwater monitoring well device and groundwater sampling method

Examples

Experimental program
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Effect test

Embodiment 1

[0032] In view of the possible groundwater environmental impact of a polluted site, it is necessary to carry out groundwater environmental investigation. According to the characteristics of the polluted site, it is inferred that the possible main pollutants of groundwater include light non-aqueous phase liquid and heavy non-aqueous phase liquid. According to the geological survey results of the site, such as figure 1 As shown, the strata of the contaminated site from top to bottom are miscellaneous fill soil (target layer 1), gravel layer (target layer 2), cohesive soil (target layer 3), silty clay (target layer 4) and silt (target layer 5).

[0033] The groundwater monitoring well device in this embodiment is set in a groundwater sampling well, and is used for sampling groundwater in N target formations with different depths.

[0034] Such as figure 1 As shown, the groundwater monitoring well device includes a plurality of five cylindrical water filter pipes 11, five water...

Embodiment 2

[0103] The other structures of this embodiment are the same as those of the first embodiment, except that the wall structure of the filter pipe is different from that of the first embodiment.

[0104] In this embodiment, the pipe wall includes an upper wall part, a middle wall part and a lower wall part from top to bottom,

[0105] The plurality of through holes include an upper through hole disposed on the upper wall portion, a middle through hole disposed on the middle wall portion, and a lower through hole disposed on the lower wall portion.

[0106] The angle between the centerline of the upper through hole and the downward direction of the centerline of the pipe body is an acute angle.

[0107] The centerline of the through hole is perpendicular to the centerline of the pipe body.

[0108] The angle between the centerline of the lower through hole and the upward direction of the centerline of the pipe body is an acute angle.

Embodiment 3

[0110] The other structures of this embodiment are the same as those of Embodiment 1, and the installation position of the water stop ring is different from that of Embodiment 1.

[0111] In this embodiment, the water stop ring is installed at the connection position where the filter pipe is connected with other pipe bodies.

[0112] Function and effect of embodiment

[0113] According to the groundwater monitoring well device and the groundwater sampling method involved in this embodiment, the groundwater monitoring well device of the present invention has the advantages of high well construction efficiency and accurate sampling of polluted groundwater in the target layer.

[0114] Furthermore, the well flushing method in this embodiment creatively proposes to use the volume of well flushing water as the basis, which overcomes the shortcomings of traditionally using stable parameters such as pH value, temperature, electrical conductivity, dissolved oxygen, and redox potential...

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Abstract

According to a groundwater monitoring well device and a groundwater sampling method in the present invention, the groundwater monitoring well device comprises a plurality of cylindrical well casings and N filter pipes that are connected to each other. A plurality of rectangular partition plates uniformly arranged from the axis to the inner wall on the upper and lower ends of the well casing divides cylindrical space in the well casing into N closed and non-connected first fan-shaped channels. The filter pipe includes a pipe wall upper part, a pipe wall lower part, at least one filter layer wrapped on the pipe wall lower part and a water stop ring. A plurality of rectangular partition plates uniformly arranged from the axis to the inner wall on the upper and lower ends of a pipe body divides cylindrical space in the pipe body into N closed and non-connected second fan-shaped channels. A plurality of through holes arranged on the lower part of the pipe wall corresponding to one of the second fan-shaped channels constitutes a filter fan-shaped body with a closed bottom. The filter fan-shaped body communicates with the first fan-shaped channels and the second first fan-shaped channelscorresponding to the upper part. The water stop ring is made from a water expandable material.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a single-well multi-layer groundwater monitoring well device and a groundwater sampling method for groundwater monitoring in polluted sites. Background technique [0002] At present, when conducting environmental investigations on polluted sites in my country, most groundwater samples are taken by building a groundwater monitoring well and taking a mixed water sample or the groundwater of a certain target layer. It is difficult to accurately know the pollution status of groundwater at different depths of the site. It is very difficult to accurately determine the volume of contaminated groundwater remediation, which affects the formulation of remediation technical plans and the accuracy of remediation construction. Therefore, in order to accurately monitor the site survey, it is possible to install several groundwater monitoring wells at different depths at the s...

Claims

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Application Information

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IPC IPC(8): G01N1/10G01N33/18
CPCG01N1/10G01N33/18
Inventor 付融冰刘华秋温东东
Owner TONGJI UNIV
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