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A technology of experimental device and experimental method, which is applied in the field of experimental device and water body experimental device for studying the biochemical process of water-sediment-aquatic organism system. Relationships, missing features, etc.
Active Publication Date: 2013-02-20
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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However, these devices cannot simulate the dynamic coupling relationship between the occurrence of algal blooms, the growth of submerged plants, and the release of sediment pollutants; they cannot batch study the impact of ecological projects (environmental pro
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example 1
[0045] Research on the Response Mechanism of Pollutant Migration and Transformation During Algal Blooms
[0046] 1) Use a sampler to collect sediments with different pollution levels in the columnar sample collection tube, install the pH electrode, redox potential (Eh) electrode, and ammonia nitrogen electrode in the electrode hole of the columnar sample collection tube, and then fix it in the sediment on the base of the release unit.
[0047] 2) Slowly inject the overlying water collected on site into the device, so that the liquid level of the water body exceeds the columnar sample collection tube by 10cm.
[0048] 3) Turn on the temperature control system and set the water temperature of the device to 27±1°C; turn on the lighting system so that the ratio of light to darkness in the system is 12 / 12, that is, 12 hours of light and 12 hours of darkness. Also turn off the pH and / or DO control system.
[0049] 4) Vaccination. Inoculate the algae species of Microcystis aerugin...
example 2
[0055] Effects of pH and / or Dissolved Oxygen Changes on Pollutant Release from Sediments
[0056] 1) Use a sampler to collect sediments with different degrees of pollution in the columnar sample collection tube, install electrodes such as pH, redox potential (Eh) electrodes, and ammonia nitrogen in the electrode holes of the columnar sample collection tube, and then fix them in the sediment release on the base of the unit.
[0057] 2) Slowly inject the overlying water collected on site into the device, so that the liquid level of the water body exceeds the columnar sample collection tube by 10cm.
[0058] 3) Turn on the temperature control system and set the water temperature of the device to 27±1°C; turn off and turn on the lighting system.
[0059]4) Set up pH series experiments with different gradients and / or DO series experiments with different gradients, and carry out research on the impact of pH and / or DO changes on the release of pollutants in sediment.
[0060] 5) St...
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Abstract
The invention relates to a water body experiment apparatus and a water body experiment method. The apparatus comprises a sediment release unit, a culture unit, a control unit, a water body controlling system, and a water quality monitoring system. The sediment release unit, the culture unit, and the control unit are sequentially arranged adjacently. Each two adjacent units are connected with a baffle, such that an experiment box body with the three units communicating with each other is formed. The water body controlling system is used for regulating physical and chemical indicators of water body in the experiment apparatus. The water quality monitoring system is used for detecting the physical and chemical indicator values of water body, sediment, plankton and/or submerged aquatic plants in the experiment apparatus. According to the invention, sediment sampling, sediment pollutant releasing, and algae and submerged plant growing are effectively combined. With the apparatus, sediment release effect of different water environments can be simulated, and influences of different ecological projects (environmental-protection dredging projects and submerged aquatic plant restoration projects) upon water body eutrophication and water body pollution can be quantitatively studied.
Description
technical field [0001] The invention relates to an experimental device and method in the field of environmental protection and governance, in particular to a water body experimental device and method for studying the biochemical process of the water-bottom mud-aquatic organism system. Background technique [0002] Sediment is one of the three major components of lake water, and is an important link and interface of the geochemical cycle of lake nutrients. The geochemical behavior of nutrients at the water-sediment interface has a very important impact on the water environment quality and ecosystem of lakes, especially shallow lakes. Studies have shown that when the external conditions (such as dissolved oxygen, pH value, redox potential, temperature, biological and water disturbance, etc.) Phosphorus, heavy metals, organic matter, etc.) may be re-released into the water body to cause secondary pollution and pose a long-term threat to the aquatic ecosystem. [0003] For a l...
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