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Pneumatic pump sampling system device of multi-stage monitoring well and method thereof

A sampling system and pneumatic pump technology, applied in the direction of sampling devices, etc., can solve the problems of restricting the development of multi-level groundwater monitoring wells, expensive, cumbersome sampling, etc., and achieve the effects of high practicability and advancement, low cost, and simplified structure

Inactive Publication Date: 2012-10-24
CENT FOR HYDROGEOLOGY & ENVIRONMENTAL GEOLOGY CGS
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to process an airbag pump with a diameter of less than 10mm. There is no such product in China. Although there are airbag pumps with a diameter of 8mm abroad, the price is very expensive, and the sampling is cumbersome and inconvenient.
Based on the above reasons, the development of multi-level groundwater monitoring wells in my country is limited, and it is urgent to find a good way to solve this problem

Method used

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  • Pneumatic pump sampling system device of multi-stage monitoring well and method thereof
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  • Pneumatic pump sampling system device of multi-stage monitoring well and method thereof

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Embodiment Construction

[0043] The invention provides a groundwater multi-level monitoring well pneumatic pump sampling technology (including a system device and a sampling method), which can monitor several or dozens of layers of groundwater with a certain height characteristic in a monitoring well. Such as figure 1 In the shown embodiment, the setting of the multi-stage monitoring well pneumatic pump sampling system device must first be completed: first drill a multi-stage groundwater monitoring well 1 whose depth passes through the multi-layer water-bearing section 7 (or the well depth exceeds the water level by several meters), select Monitor the layer and establish the monitoring point, and use the well-forming technology to set up the well 3, and the groundwater in the adjacent layer at the monitoring point is separated by the airtight device 2. In this embodiment, it is based on the wall of the well-forming well and the position of the isolation point to be sealed. The interval between the wel...

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Abstract

The invention discloses a pneumatic pump sampling system device of a multi-stage monitoring well. The device is arranged inside a drilled multi-stage underground water monitoring well, wherein the well passes through a plurality of aquifers in depth; every two adjacent aquifers are mutually sealed and isolated; a water inlet window pup joint assembly is arranged on a local section of a well casing at the position of each monitoring layer after the well is formed; the water inlet window pup joint assembly comprises water inlet windows; a water inlet of each water inlet window is communicated with a water inlet pipe joint of a pneumatic pump; air supply outlets and water outlets of the pneumatic pumps are communicated with the earth surface respectively via an air supply pipe and a water outlet pipe; check valves are respectively arranged in water inlet and outlet pipelines of all the pneumatic pumps; at least one group of air supply units is arranged on the earth surface; each air supply unit is composed of an air source and an air adjuster in connection combination, and the outlet of each air adjuster at a working period is instantly connected with an air supply port requiring sampling. Water samples with component representativeness can be conveniently and fast extracted, and the pneumatic pump sampling system device is simple, practical and low in cost.

Description

technical field [0001] The invention relates to groundwater pollution monitoring technology, in particular to a multi-stage monitoring well pneumatic pump sampling system device and method thereof. Background technique [0002] At present, the forms of groundwater monitoring wells at home and abroad include cluster monitoring wells, nest monitoring wells, multi-channel tube monitoring wells and multi-level monitoring wells. The development direction of monitoring wells is towards the direction of multi-layer monitoring and small diameter. [0003] At present, domestic groundwater sampling devices mostly use sampling barrels and inertial pumps, while foreign countries mostly use airbag pumps, vacuum pumps (used when the water level is above 8 meters) and peristaltic pumps to collect groundwater samples. How to take high-quality water samples in small-diameter monitoring wells There is no doubt that the air bag pump is a better sampling tool. However, it is difficult to proce...

Claims

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Application Information

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IPC IPC(8): G01N1/10G01N1/14
Inventor 王建增蔡五田叶成明
Owner CENT FOR HYDROGEOLOGY & ENVIRONMENTAL GEOLOGY CGS
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