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Multifunctional groundwater work well with hydraulic regulating function

A groundwater and working well technology, which is applied in the direction of contaminated groundwater/leachate treatment, water supply equipment, drinking water equipment, etc. It can solve the problem that there are not many application examples of groundwater pollution restoration technology, the injection depth cannot be accurately grasped, and the fixed depth cannot be realized. Sampling and other issues, to achieve the effect of improving operation management efficiency, long service life, and simple manufacturing process

Active Publication Date: 2017-03-08
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the investigation of typical groundwater pollution sites and pollution mechanism studies have been carried out in Northeast my country and some parts of North China, the methods for groundwater sampling and investigation are not mature, and there are few application examples of groundwater pollution remediation technology.
[0003] Traditional groundwater sampling and monitoring wells cannot achieve accurate fixed-depth sampling and objectively reflect the degree of pollution when the concentration of pollutants in the aquifer is unevenly distributed or NAPL (nonaqueous phase liquid, non-aqueous phase) exists. Injection wells commonly used in restoration technology (which can inject recharged groundwater or chemicals) also have the problem that the injection depth cannot be accurately grasped

Method used

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  • Multifunctional groundwater work well with hydraulic regulating function
  • Multifunctional groundwater work well with hydraulic regulating function
  • Multifunctional groundwater work well with hydraulic regulating function

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0058] Example 1: The design and application practice of the working well when the groundwater aquifer thickness is 2.0m.

[0059] Environmental conditions: the buried depth of groundwater is 2.3m, and the thickness H of the first layer of aquifer is 2.0m.

[0060] Work content: Take groundwater samples at intervals of 0.5m for analysis and monitoring.

[0061] Since the work requires groundwater sampling at a point every 0.5m, the length of the stroke (λ) is designed to be 0.5m, and the thickness H of the first layer of aquifer is 2.0m. The specific calculation method for the number of strokes is as follows:

[0062] S=H / λ=2.0 / 0.5=4...0;

[0063] C=0, M=N=4, H'=0.5(m), H=4*0.5(m);

[0064] Therefore, the inner well pipe 2 top and the lower stroke quantity of the working well are respectively 4, and the cross-sectional view after the well body is fully stretched is as follows Picture 1-1 , Figure 1-1a , Figure 1-1b , Figure 1-1c shown. Sampling locations at 0.5m, 1.0...

example 2

[0065] Example 2: The design and application practice of the working well when the groundwater aquifer thickness is 2.5m.

[0066] Environmental conditions: the buried depth of groundwater is 3.2m, and the thickness H of the first layer of aquifer is 2.5m.

[0067] Work content: at intervals of 0.5m, carry out the repair work of in-situ chemical oxidation and depth-fixed addition of agents for groundwater.

[0068] Since the work requires adding chemicals at a point every 0.5m, the length of the stroke (λ) is designed to be 0.5m, and the thickness H of the first layer of aquifer is 2.5m. The specific calculation method for the number of strokes is as follows:

[0069] S=H / λ=2.5 / 0.5=5...0;

[0070] C=0, M=N=5, H'=0.5(m), H=5*0.5(m);

[0071] Therefore, the inner well pipe 2 top and the lower stroke quantity of the working well are 5 respectively, and the cross-sectional view of the well body after all stretching is as follows diagram 2-1 , Figure 2-1a , Figure 2-1b , ...

example 3

[0072] Example 3: The design and application practice of the working well when the groundwater aquifer thickness is 2.8m.

[0073] Environmental conditions: the buried depth of groundwater is 1.5m, and the thickness H of the first layer of aquifer is 2.8m.

[0074] Work content: Take groundwater samples at intervals of 0.5m for analysis and monitoring.

[0075] Since the work requires groundwater sampling at a point every 0.5m, the length of the stroke (λ) is designed to be 0.5m, and the thickness H of the first layer of aquifer is 2.8m. The specific calculation method for the number of strokes is as follows:

[0076] S=H / λ=2.8 / 0.5=5...0.3;

[0077] C=0.3, M=N+1=6, H'=0.3(m), H=5*0.5+0.3(m);

[0078] Therefore, the inner well pipe 2 top and the lower stroke quantity of the working well are 6 respectively, and the cross-sectional view of the well body after all stretching is as follows Figure 3-1 , Figure 3-1a , Figure 3-1b , Figure 3-1c shown. Sampling locations at ...

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Abstract

The invention provides a multifunctional groundwater work well with the hydraulic regulating function. The multifunctional groundwater work well is characterized in that an inner well pipe is sleeved in an outer well pipe, uniform sieve meshes are arranged in the well body of the outer well pipe and under the water level of the underwater water-bearing layer, the upper edge and the lower edge of the inner well pipe are respectively and fixedly connected with the outer well pipe, the inner well pipe is divided into the upper portion, the middle portion and the lower portion, each of the upper portion and the lower portion is provided with a telescopic hydraulic cylinder, the upper portion and the lower portion are connected with a hydraulic transmission gear above the ground through the upper edge of the inner well pipe, and a floral pipe provided with the uniform sieve holes is arranged in the middle. Compared with a groundwater monitoring well or a reagent dosing well, the multifunctional groundwater work well has the advantages that operation location can be controlled accurately by only regulating the inner telescopic degree of the work well, simpleness in daily maintenance is achieved, and complicated underground assemblies and moving parts are omitted.

Description

technical field [0001] The invention relates to repair process equipment for groundwater environment monitoring and pollution control. Background technique [0002] my country's groundwater is relatively serious, especially the pollution of shallow groundwater is particularly prominent. The investigation, pollution control and remediation of groundwater contaminated sites are still challenges for our country, and it is of great significance to carry out research work on groundwater polluted sites. Although investigations of typical groundwater pollution sites and pollution mechanism studies have been carried out in Northeast my country and parts of North China, the methods for groundwater sampling and investigation are not mature, and there are few application examples of groundwater pollution remediation technology. [0003] Traditional groundwater sampling and monitoring wells cannot achieve accurate fixed-depth sampling and objectively reflect the degree of pollution whe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E03B3/10C02F1/00C02F103/06
CPCE03B3/10C02F1/00C02F2103/06
Inventor 屈智慧王洪涛杨勇方忠新常玉虎桑志伟蔡文敏黄瑶王超裴超
Owner TSINGHUA UNIV
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