Pore water sampling device

A sampling device and pore water technology, applied in sampling devices, sampling, measuring devices, etc., can solve the problems of difficult to protect the in-situ environment of pore water in the sampling area, mixing of upper and lower water samples, etc., so as to avoid disturbance and mutual pollution. Effect

Inactive Publication Date: 2021-04-13
POWERCHINA WATER ENVIRONMENT GOVERANCE
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Problems solved by technology

[0004] The purpose of the present invention is to provide a pore water sampling device, which aims to solve the technical problem that the pore water sampling...

Method used

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Embodiment approach

[0032] The pore water sampling device of the present invention can be applied to the collection of filter material pore water samples of natural soil, surface flow artificial wetland and subsurface flow artificial wetland sewage treatment system, and can adapt to pore water with different soft and hard media, different depths, and different sampling requirements Sampling, under the premise of protecting the in-situ environment of the pore water in the sampling area and avoiding the mixing of upper and lower water samples, can realize simple and fast water sample collection and storage, and fully reveal the dynamic change characteristics and main influencing factors of wetland pollutants.

[0033] like figure 1 , Image 6 As shown, in this embodiment, the pore water sampling device is used to collect water samples in the subsurface wetland filter material layer, and includes a sampling tube 1 and a sampling pump 2. A plurality of seepage holes 15 are provided on the wall of the...

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Abstract

The invention relates to the technical field of wetland water sample collection, and provides a pore water sampling device which is characterized in that the internal space of a sampling pipe is divided into different water collection cavities for collecting pore water with different depths through a separation plug, a communicating pipe is inserted into the separation plug and is respectively communicated with the different water collection cavities, and a sampling pump is connected with any communicating pipe, so that pore water in different water collection cavities can be collected through the sampling pump, the pore water at different depths can be collected in situ, and the mutual pollution among the pore water at different depths is avoided. After the device is placed at a sampling position, fixed-point continuous sampling can be realized without repeated insertion and extraction, disturbance of repeated insertion and extraction to wetland soil or an original structure of a filter material is avoided, and long-term positioning monitoring of pore water of the soil or the filter material is facilitated.

Description

technical field [0001] The invention relates to the technical field of wetland water sample collection, in particular to a pore water sampling device. Background technique [0002] Pore ​​water is the mobile water that is not adsorbed by solids such as filter material and biofilm in the wetland filter material or matrix pores. The pore water of the subsurface wetland filter material contains different types of pollutants, such as organic pollutants, heavy metal elements, nitrogen, phosphorus, and sulfide. Especially with the different burial depths of pore water, the amount of dissolved oxygen contained in pore water has a large difference, which leads to significant changes in the redox potential, element valence state, microbial biochemical process, etc. of the water body, which in turn affects the migration and transformation forms of pollutants. and the final trend. Therefore, analyzing the oxidation-reduction potential, chemical composition, and pollutant form of pore...

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Application Information

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IPC IPC(8): G01N1/14G01N1/16
CPCG01N1/14G01N1/16G01N2001/1418
Inventor 毛战坡杨海洋杨凯刘鹄陈铁柱刘成志刘彦鹏刘欣王峰曹永生廖敏辉
Owner POWERCHINA WATER ENVIRONMENT GOVERANCE
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