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Underground water sampling method

A groundwater and pumping pump technology, used in sampling, sampling devices, testing water, etc., can solve the problems of long time and low efficiency of groundwater sampling, and achieve the effect of saving sampling time and improving sampling efficiency.

Active Publication Date: 2020-09-15
TSINGHUA UNIV
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  • Abstract
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Problems solved by technology

However, the low-flow method can take longer to sample each monitoring well, resulting in less efficient groundwater sampling

Method used

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Embodiment Construction

[0024] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0025] The groundwater sampling method provided in this embodiment can be applied to figure 1 The application scene of the groundwater sampling system is shown. The groundwater sampling system is composed of a monitoring well 110 , a water level gauge 111 and a water pump 112 . Wherein, the outer wall of the monitoring well 110 can be made of cement ...

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Abstract

The invention provides an underground water sampling method. The method comprises the following steps: pumping underground water from a monitoring well at a first flow rate by using a water pump, acquiring the liquid level height of the underground water in real time, determining the descending height value of the underground water level according to the underground water level height; when the descending height value of the liquid level of the underground water is equal to a first height value, pumping the underground water from the monitoring well at a second flow rate by utilizing the watersuction pump, and when the liquid level of the underground water is in a balanced state, pumping the underground water by using the water pump, and taking the underground water pumped at the moment as an underground water sample. According to the method, the representative underground water in the monitoring well can be pumped in a mode of changing the flow rate, so that the sampling time of theunderground water is saved, and the sampling efficiency of the underground water is improved.

Description

technical field [0001] The present application relates to the technical field of environmental monitoring, in particular to a groundwater sampling method. Background technique [0002] With the development of the economy and the progress of the society, the scale of the city is getting bigger and bigger. In the detection and treatment of groundwater, accurate monitoring of groundwater quality is very important for the investigation of contaminated sites, environmental risk management and performance evaluation of remediation systems. Groundwater quality may be affected by local soil matrix and coincidence factors introduced during drilling. Therefore, it is necessary to monitor representative groundwater samples and monitor groundwater quality in real time to control groundwater pollution. [0003] Traditionally, low-flow methods have been used to sample a representative amount of groundwater in each monitoring well. However, the low-flow method may take a longer time to sa...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/14
CPCG01N1/14G01N2001/1418G01F23/0023G01N1/10G01N33/18G01N2001/1093G01F23/00
Inventor 侯德义王轶冬李广贺张旭张芳
Owner TSINGHUA UNIV
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