Device for performing simulation test on influence of medicament spraying in lake on performance of heavy water

Abstract

The invention discloses a device for performing simulation test on influence of medicament spraying in a lake on performance of heavy water. The device consists of two members, namely a spraying simulation device and a lake simulation test column; the spraying simulation device can control spraying flow, hydraulic pressure and spraying positions, and a spraying nozzle can be replaced to adapt to different spraying schemes; and the lake simulation test column can simulate overlying water of lakes with different water depths and the thickness of polluted substrates, and sample taps which are formed in intervals of 100mm can perform layering monitoring on the researched water body. The device can be used for simulation study on the influence of medicament spraying on the overlying water of lakes and substrates and the passivation effect in the lake bottom sediment passivation project, adjust the spraying intensity and positions according to actual requirements, and can perform layering monitoring on the water sample.

Description

Technical field [0001] The invention relates to a simulation test device for the influence of chemical spraying on the lake's overlying water and bottom material, which is used for simulation research on the influence of chemical spraying on the lake's overlying water and bottom material and the passivation effect in lake sediment pollution passivation projects . Background technique [0002] To study the adsorption performance of certain environmental protection materials on pollutants in practical application projects, static simulation experiments of dosing, stirring and mixing, and static observation are usually used. According to the controlled dosing amount, set temperature and determined time, by measuring the concentration of water pollutants at different time points before and after dosing, the engineering static simulation adsorption capacity of the adsorption material under different conditions can be calculated. However, this conventional static simulation devic...

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Problems solved by technology

However, this conventional static simulation device cannot investigate the effect of engineering chemical spraying methods on the adsorption capacity of adsorbent materials, and cannot investigate the impact of pollutant release in the bottom on different layers of overlying water when water disturbance occurs, especially for lake endogenous pollution. The in-situ passivation technology of polluted sediment in the process of treatment is to cover the surface of the polluted sediment with a layer of flocs with strong adsorption capacity, and the flocs absorb the pollutants released from the sediment under static conditions. It is very necessary to investigate the layer-by-layer distribution of pollutants released in the sediment in the overlying water when the water body is disturbed under certain conditions or when the water body is disturbed. However, the conventional static simulation device cannot meet the requirements.

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