Generator for simulating pollution release process of aquatic plants to sediments and use method

Abstract

The invention relates to a generator for simulating the pollution release process of aquatic plants to sediments and a preparation method of the generator, and belongs to the field of environment protection. The generator comprises an organic glass annular water tank, a water flow pushing motive power system and a flow speed measuring fixing device. The dimension of the water tank is determined according to the test requirements, the cross section is in a triangular shape, the height is 50 to 100cm, the radio of the length to the width of the straight passage part is not smaller than 4, and the bent passage inner diameter is not smaller than 10cm. Sediments with the thickness being 15cm are paved at the bottom of the water tank, the aquatic plants are planted on the sediments for simulating the natural water body for growing the aquatic plants, a rotating disc arranged on the water body surface is driven through an adjustable motor, the water body in the tank is driven to flow to simulate the disturbance effect of the wind-driven flow formed by the natural water body under different wind fields on the bottom sediments, a flow speed measuring instrument is precisely positioned through the flow speed measuring fixing device, and the water flow movement condition of the water tank cross section, particularly the sediment-water interface is observed. The generator can be used for perfectly simulating the pollution release influence process on the sediments, caused by the lake aquatic plants under the different-intensity wind field effects.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to an indoor simulation device for generating sediment pollution release by aquatic plants and a method for using the same, which is suitable for release of sediment pollution in shallow lakes with aquatic plants under the action of wind fields of different intensities The simulation of the process is an experimental device for the study of the ecological environment of water bodies. Background technique [0002] Water body sediment is an important part of the water body ecosystem, and it is the sink and source of various nutrients and pollutants in the water body. Long-term exogenous input and deposition of aquatic biological residues often enrich a large amount of organic matter, nutrients such as N and P, heavy metals and other pollutants in the sediment. The sediment-water interface is one of the most important interfaces in shallow lakes. Water disturbance wil...

AI Technical Summary

Problems solved by technology

The triangular bottle type and the straight pipe type system are too small to reflect the flow field of the water body under the disturbance of the wind field and the actual situation of the pollution release of the river sediment under the hydrodynamic condition, and it is impossible to plant aquatic plants

The concentric ring-shaped water tank is driven by the rotation of the upper and lower plates or the inner and outer walls. The relative motion of the device itself generates a tangential force, which in turn causes the water body to generate a flow field movement. The uneven distribution of flow and velocity along the radial direction makes the study of sediment pollution release process more complicated

In addition, in lakes where aquatic plants grow, aquatic plants have a great influence on the release of sediment pollution, and the current indoor simulation method has not been able to simulate the release of sediment pollution in water bodies with various aquatic plants , to meet the research needs of the relationship between wind field disturbance-aquatic plants-flow field structure-sediment pollution release

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