Device for measuring effect of bioturbation on distribution of pollutants in sediments

A bioturbation and pollutant technology, applied in the direction of measuring devices, test water, analysis materials, etc., can solve the problems of difficult measurement of the spatial distribution of heavy metal concentration, disturbed sediments, measurement system errors, etc., to achieve a wide range of applications, simplify the The effect of simple experimental process and structure

Inactive Publication Date: 2017-02-01
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional measurement method is to use a column sampler to collect the sediment back to the laboratory, and use the layered filter press method to squeeze out the interstitial water, but this method will disturb the sediment, change the structure and physical and chemical conditions of the sediment sample, and may even put The components of different layers of sediment are mixed together, causing systematic errors in measurement. Under such conditions, the spatial distribution of heavy metal concentrations is difficult to measure

Method used

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  • Device for measuring effect of bioturbation on distribution of pollutants in sediments
  • Device for measuring effect of bioturbation on distribution of pollutants in sediments
  • Device for measuring effect of bioturbation on distribution of pollutants in sediments

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Embodiment 1

[0035] The present invention selects and customizes experimental elevators for equipment: aluminum oxide material, top plate specification 75mm*75mm, lifting range 50-300mm.

[0036] Capillary glass tube: hard neutral glass, inner diameter 1.0mm, wall thickness 0.1mm, tube length 120mm, 500 pieces / tube, weight 110g.

[0037] A device for measuring the distribution of pollutants in sediments caused by bioturbulence. After the simulation, the device can also carry out accurate and pollution-free layered sampling of sediments, including vent cover 1, shell 2 (126mm*126mm*250mm ), base 3, lining 4 (120mm*120mm*240mm), vent cap 1 fastened on the casing 2, the lining 4 is tightly put into the casing 2, and the casing 2 is connected to the base 3 through internal and external threads and an O-ring. Vent cover 1 is a hollow structure, with a vent hole 9 (Φ8mm, used for experimental oxygen ventilation, which is connected to an aeration device through a plastic tube) on the top, and 4 v...

Embodiment 2

[0040]Before the experiment, the 5-20cm sediment from the surface of the river was passed through a 60-mesh sieve to remove impurities such as gravel, animal and plant residues, and plastic waste, and then the sediment was frozen to kill the possible presence of of small animals. As disturbing organisms, the worms (commonly known as fish insects) were purchased from the flower, bird, fish and insect market. They were cultivated in a trace mineral salt (MMS) solution for one week, and the water was changed every morning and evening, so that the worms adapted to the indoor simulation experiment. Rinse the worms in secondary deionized water, use tweezers to pick out worms with a similar length of 2 ± 0.3 cm, put 2, 5, 8, 10, and 15 worms into clean petri dishes, and place them in the Use absorbent paper to absorb excess water on the surface of the worm before taking the electronic analytical balance to avoid measurement errors. The linear relationship between the number of worms...

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Abstract

The invention discloses a device for measuring the effect of bioturbation on distribution of pollutants in sediments. The device belongs to the fields of lake ecology and environment protection, and comprises a ventilation cover, a shell, a base, a liner, a sampling station, a sampling shovel and a lifting pedestal, wherein the ventilation cover is fastened on the shell; the liner is arranged in the shell; the shell is connected with the base; a ventilation hole is formed in the top part of the ventilation cover; a vent hole is formed in the bottom part of the ventilation cover; during sampling, the ventilation cover and the base are removed, the lifting pedestal is connected with the bottom part of the shell, a lifting table is arranged on the lifting pedestal, the sampling station is sleeved on the shell and is provided with an edge extending inwards, a platform for supporting is arranged on one side of the sampling station, two raised guide rails are arranged on the platform, and the sampling shovel is arranged on the guide rails of the sampling station. The device not only can simulate an experimental culture process, but also can realize accuracy and speediness during the sampling process, an experiment process is simplified, the experiment time is shortened, and the work efficiency is improved.

Description

technical field [0001] The invention belongs to the field of lake ecology and environmental protection, and in particular relates to a device for measuring the distribution of biological disturbances on pollutants in sediments. Background technique [0002] With the improvement of human living standards, the wanton discharge of domestic sewage and industrial wastewater is accompanied by increasingly serious pollution of the natural water environment. Today, seawater, rivers, and lakes on the coast are all affected by pollutants. Among them, the most important type of pollutants are heavy metals, which have problems such as low concentration, high toxicity, bioaccumulation effect, and non-degradability, which seriously threaten the survival of aquatic organisms and human health, and cause serious damage to organisms in the nearby water environment. harm. [0003] Natural water body sediment is an important part of water body ecosystem, it serves as the habitat and food sourc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/18
CPCG01N33/186
Inventor 花修艺陈渊吕继涛董德明梁大鹏郭志勇邹笛
Owner JILIN UNIV
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