In-situ layering collection device for pore water of cylindrical sediments in shallow water area

A collection device and sediment technology, applied in the field of environmental science or environmental engineering, can solve problems such as oxidation or loss, troubles in research work, and inability to grasp the content of reducing substances, so as to achieve the effect of guaranteeing the original properties

Inactive Publication Date: 2016-11-23
YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, laboratory (displacement) high-speed centrifugation is usually used to obtain sediment pore water, but this method is very limited for obtaining columnar sediment pore water (obtained by layered centrifugation, usually the layer thickness is 2cm, so The amount of water obtained by centrifugation is less), a

Method used

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  • In-situ layering collection device for pore water of cylindrical sediments in shallow water area
  • In-situ layering collection device for pore water of cylindrical sediments in shallow water area
  • In-situ layering collection device for pore water of cylindrical sediments in shallow water area

Examples

Experimental program
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Effect test

Example Embodiment

[0026] Example 1: Collection of pore water in river and lake sediments

[0027] (1) Collection of pore water in river sediments

[0028] River water pollution is closely related to the release of endogenous pollution of black and odorous sediments in rivers. Therefore, in order to study the pollution load of polluted water bodies and identify pollution sources, it is necessary to study the release of major pollutants in sediment pore water. To this end, the research team selected the Guandang River in Yantai as the research object, and set up three sampling stations in the upper, middle and lower reaches of the river to collect the pore water in the columnar sediments of the river for analysis of iron and manganese and other major black-causing elements.

[0029] The operation is as follows:

[0030] In the first step, the pore water sampler (see attached figure 1 ) Transport to the predetermined sampling station, connect the outer ring 1 of the column to the rope and fix the load-be...

Example Embodiment

[0038] Example 2: Collection of pore water in bay sediments

[0039] The release of pollutants in sediments through pore water is also one of the main sources of pollution in coastal waters such as semi-enclosed bays. Therefore, it is important to understand the release flux of sediment pore water under the influence of tides, and sediment pore water is required. The main pollutants are sampled and analyzed in situ. For this reason, the research team selected the pore water in the coastal sediments of the Jiahe Estuary, Taozi Bay and Sishili Bay in Yantai as the research object. The determination of the heavy metal content in the pore water of the columnar sediments in this area was carried out using the device of the present invention. The specific steps for collecting pore water in columnar sediments are the same as those in the collection of pore water in columnar sediments in rivers and lakes, except that the depth at which the diver enters the water to confirm that the sampl...

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Abstract

The invention relates to sample collection equipment in the field of environmental science or environmental engineering, in particular to an in-situ layered collection device for columnar sediment pore water in shallow water areas. It includes a cylinder, a sealed layered disk, a water guide pipe and a suction device, wherein the cylinder is a hollow structure and has a plurality of water seepage inlet holes on the side wall, the sealed layered disk is arranged inside the cylinder, and the sealed sub The layer plate is provided with multiple storage areas along the axial direction, and a pipeline groove is arranged in the center. The pipeline groove is provided with a plurality of water suction holes connected with each storage area. There are multiple water guide pipes in the pipeline groove. The lower end of each water guide pipe They are respectively connected with each storage area, and the upper end protrudes from the cylinder, which is the collection end. The suction device is used to collect sediment pore water in each layer of storage area at the collection end of each aqueduct. The sampling process of the present invention has no direct contact with air, and does not require operations such as sample pretreatment, cutting and separation, and high-speed centrifugation, thereby effectively ensuring the original properties of pore water.

Description

technical field [0001] The invention relates to sample collection equipment in the field of environmental science or environmental engineering, in particular to an in-situ layered collection device for columnar sediment pore water in shallow water areas. Background technique [0002] Sediments are an important part of the water environment, and the release of endogenous pollutants in sediments is one of the main sources of water quality deterioration. Studying various geochemical characteristics of sediment pore water has important theoretical and practical significance for revealing sedimentary environment, water pollution and protecting water resources. Pore ​​water plays a key role in the release of endogenous substances in sediments. That is, the pollutants adsorbed by the sediment are first released into the pore water, and then further diffuse into the overlying water through the pore water, thus causing the source pollution of the water body. Therefore, an accurate ...

Claims

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Application Information

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IPC IPC(8): G01N1/14
Inventor 盛彦清李兆冉孙启耀孙祥彧孙韶玲
Owner YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI
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