Sediment resuspending experimental device

Abstract

The invention relates to a sediment resuspending experimental device. The experimental device comprises a frame, experimental tubes vertically and fixedly arranged on the frame, sampling tubes uniformly arranged in the upper sidewall of each experimental tube, a disturbance tube arranged in the bottom sidewall of each experimental tube, and a sediment sample tube fixedly arranged in the bottom endof each experimental tube; the sampling tubes are communicated with the corresponding experimental tube, and provided with valves respectively, the bottom of the disturbance tube is communicated withthe experimental tube, and the other end of the disturbance tube is provided with a stirring paddle; and the experimental tube and the sediment sample tube are provided with a sealing flashboard. Thewater layers and depths are simulated in the experimental tubes of the whole experimental device, the sediment sample tubes contain sampled sediment, and are fixed to the corresponding sealing flashboards via long bolts, the sealing flashboards are opened to start the stirring paddles and further simulate disturbance of water current, the sampling tubes sample water in different depths, and the temperature can be simulated by a heating sleeve.

Description

technical field [0001] The invention relates to the field of water ecology and water environment detection, and relates to a sediment resuspension experimental device. Background technique [0002] Sediment generally refers to the sediments of rivers, lakes and seas, and is an important part of water bodies. [0003] The physical structure of river and lake bottom mud includes the sediment interface layer in contact with the water body and the original sediment layer under the interface layer. The sediment interface layer is mainly composed of benthic organisms and their residues, metabolites, and sticky sediment. The pollutants in them are released back to the water body through dissolution, biodegradation, etc., forming the endogenous pollution load of pollutants in rivers and lakes. Therefore, it is of great significance to study the release law of lake sediment and its impact on overlying water quality. [0004] Known as the "Kidney of North China", Baiyangdian Lake is...

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Problems solved by technology

At present, there are very few resuspension research devices for water body sediment in the market, all of which are made by each unit, with single control parameters and large deviations in data conclusions. None of them are easy to use, high in work efficiency, and have multi-scenario simulation of underwater bottom. Mud Resuspension Experimental Apparatus

[0006] The existing sediment testing device can only install the sample and then add water, so that the water flow hits the sample, causing great disturbance to the sample, and the next step can only be carried out after the bottom of the water body returns to calm, resulting in large deviations in the experimental results. The experiment time for each sample is long, and most of the time is spent waiting for water injection, water stability, and sediment recovery, etc., and the practicability is not strong, the efficiency is low, and the deviation of the experimental results is large.

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