Indoor simulated system applied in lake sediment-water interface process research

Abstract

The invention provides an indoor simulation system used for the process study between the sediments and the water surface of a lake. The indoor simulation system mainly comprises a water power disturbance system, an illuminating system, a constant-temperature water bathing system and an automatic sampling system. The invention has the advantages that the lake sediments are collected and directly put into a heat reserving box, the surface water power disturbance, the surface illumination, the surface temperature and the overlying water chemical features can be manually controlled, and long-time operation and multi-sampling are also available, without influencing the sediments and the surface process; the invention can, in fairly large scope, satisfy the requirements of the scheduled experimental conditions, so as to achieve the basic requirements of the researchers on studying the surface chemical or biological process. The system, being reliable and cheap, has advantages of compact structure, stable operation, long-time continuous running and long service life as well as convenient component disassembly-assembly and low cost.

Description

technical field [0001] The invention relates to laboratory simulation equipment for studying interface chemistry and biological processes, in particular to an indoor simulation system applied to the research of lake sediment-water interface process, which belongs to the field of geology and environmental science. Background technique [0002] The chemical, physical, and biological processes at the sediment-water interface of shallow lakes and rivers are the most active, and these processes are difficult to capture in practice due to the influence of wind waves, ships, and benthic animals. Therefore, the research on the sediment-water interface of shallow lakes and rivers is carried out in the laboratory in most cases, but many of them are unreasonable in the design of experimental devices. Errors, such as the static culture method, due to the oxygen consumption of the sediment, will make the oxygen erosion depth of the sediment-water interface shallower, and even make the en...

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Problems solved by technology

Another example is the indoor sediment-water interface research. Due to the large research volume, temperature control is difficult. Some experiments may use indoor air conditioners to control the temperature. However, due to the large room volume, the temperature control will be unstable and reach the expected temperature. It takes a long time; some people use an incubator to control the temperature. However, under this temperature control method, due to the dry air, it is easy to cause the volume of the overlying water to decrease due to rapid evaporation, and the experimental operation space is small, and the actual operation is inconvenient. If Using a water bath to control the temperature will greatly shorten the cooling time, stabilize the final temperature, and reduce the evaporation of the overlying water

At present, it is difficult to complete the interface research in the laboratory in terms of experimental conditions, such as light, interface oxygenation, temperature, etc. The main reason is that the experimental equipment is not perfect and has not been integrated.

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