A coupling device for simultaneous layered sampling and hydrological testing of overlying water and interstitial water

Abstract

The invention discloses a coupling device for synchronous layered sampling of overlying water and interstitial water and hydrological test, which comprises a multi-head synchronous sampling unit, an interstitial water collection and filtering unit, an overlying water collection unit, a hydrological coupling unit, and a support and protection unit; The sounding rod is used for sounding, the current meter is installed, and the sampling pipe is fixed; the propeller type current meter of the hydrological coupling unit and the overlying water delivery pipe are installed on the sounding rod supporting the protection unit; the overlying water sampling pipe is fixed in layers On the deep pole, the overlying water is collected layer by layer; the permeable water collecting rod is used to collect the interstitial water in the surface sediment; the fixed pile supporting the protection unit is used to fixedly connect the permeable water collecting rod and the cage; the invention can realize the overlying water and The synchronous collection of interstitial water in the surface and bottom mud can realize the layered and dense sampling of both; at the same time, the invention can realize the measurement of flow velocity and water depth and the collection of water samples, making the relationship between water environment indicators and hydrodynamic characteristics more closely.

Description

technical field [0001] The invention belongs to the technical field of water body environment, and in particular relates to a coupling device for synchronous layered sampling and hydrological test of overlying water and interstitial water. Background technique [0002] The overlying water and interstitial water of surface sediments in the natural water environment contain a lot of nutrient salts and soluble gases. Collecting and researching them in layers is a necessary means to study the water environment. Nowadays, with the continuous deterioration of water ecology and the continuous warming of the global climate, the investigation and research on the water environment is imminent. The layered collection of overlying water and interstitial water has important practical significance for analyzing and improving the environmental quality and ecological status of the water body, and monitoring the concentration of greenhouse gases dissolved and existing in the water body. ...

AI Technical Summary

Problems solved by technology

[0003] In order to collect overlying water and interstitial water layer by layer, in the prior art, scheme one: the traditional collection method, but has the following defects. When collecting overlying water, it is easy to cause unsealable water samples and affect the determination of dissolved gases. When collecting interstitial water It will also lead to problems such as small amount of collection and high cost of equipment, and in this scheme, the collection of overlying water and interstitial water is carried out separately, and it is difficult to control whether the samples are collected at the same sampling point; scheme two: a kind of overlying water and sediment The interstitial water integrated collection device has made a great improvement compared with the first solution, which can control the collection of overlying water and interstitial water at the same sampling point, but it also has the following defects, which cannot realize the measurement of flow velocity and water depth and the identification of water samples The collection is carried out simultaneously, and it is difficult to closely link the water environment indicators with the hydrodynamic characteristics

[0004] The above-mentioned solutions in the prior art are mainly aimed at the collection of overlying water and interstitial water, without measuring the flow velocity and water depth, which cannot ensure the scientificity and authenticity of the experimental data

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