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

Abstract

The invention provides an indoor simulation device applied to the study of lake sediment-water interface process, which mainly includes four parts: hydrodynamic disturbance system, lighting system, constant temperature water bath system, and automatic sampling system. Its advantages are: the collected lake sediment Placed directly in the incubator, the interface hydrodynamic disturbance, interface light, interface temperature, and overlying water chemical properties can be artificially controlled, and it can run continuously for a long time and take multiple samples without affecting the sediment and interface process; It meets the requirements of preset experimental conditions to meet the basic requirements of researchers for interfacial chemistry or biological process research. The system has a compact structure, convenient assembly, disassembly and replacement of parts, stable, reliable and cheap operation, can run uninterrupted for a long time, and has a long service life.

Description

technical field [0001] The invention relates to laboratory simulation equipment for studying interface chemistry and biological processes, in particular to an indoor simulation device applied to the study of lake sediment-water interface processes, belonging to the fields 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 entire...

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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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