AU2020103167A4 - Indoor microcosm simulation experimendevice for simulating river ecosystem - Google Patents

Abstract

The present invention relates to an indoor microcosm simulation experiment device for simulating a river ecosystem. The device simulates wind and thunder-lightning phenomena of nature through wind and thunder-lightning simulation control units, controls the water level of a simulated river through a water level control unit, controls the concentration of pollutants in water of the simulated river through a dosing control unit, achieves the cyclic flow of the river through a water treatment unit, and achieves simulation of the river ecosystem under natural conditions through reasonable cooperation among various control units, to complete the research on the impact of pollutants on the river water ecosystem, the research on migration behaviors of pollutats in the river ecosystem and the research on interaction of multiple processes and components. Drawings of Description 4 43 16 23 21 2 Fig. 1 1

Description

Drawings of Description 4 43

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Description INDOOR MICROCOSM SIMULATION EXPERIMENT DEVICE FOR SIMULATING RIVER ECOSYSTEM

Technical Field The present invention relates to the technical field of ecotoxicology, and particularly to an indoor microcosm simulation experiment device for simulating a river ecosystem.

Background It is a relatively mature and widely used technical means to use an incubator to simulate the ecosystem to carry out various ecotoxicological experiments. By adding inorganic phases (such as sediments, rockery, etc.), organic phases (plants, aquatic animals, etc.) in the incubator to simulate various components in the natural ecosystem, and simulate various conditions of the system through manual control, such as water temperature, pH, concentration of toxic chemicals, etc., the influence of these conditions on biological samples is observed. However, the environmental conditions provided in the existing incubator are still quite different from the real natural environmental conditions, and the simulation of the real environment is not perfect. Therefore, subject to the above conditions, the authenticity of using an incubator to simulate an ecosystem simulation at present still has many defects.

Summary In view of the above problem, the present invention provides an indoor microcosm simulation experiment device for simulating a river ecosystem. The device can realize a more realistic simulation of the river ecosystem, is suitable for various sediments and biological samples, and can provide favorable conditions for in-depth research on the interaction of pollutants in sediments and water phases and interaction with organisms. Embodiments of the present invention provide an indoor microcosm simulation experiment device for simulating a river ecosystem, comprising: a support frame used to fix a device body, the device body including three layer structures from bottom to top, wherein the lower layer structure is provided with a water treatment unit and a water level control unit, the water treatment unit being used to treat polluted experiment water in a simulated river; the water level control unit being used to control the water level of the simulate river; the middle layer structure is provided with at least two simulated river flumes, wherein each of the simulated river flumes is provided with a water inlet at one side, and the water inlet is connected to the water level control unit; the upper layer structure is provided with: a wind simulation control unit used to control wind speed of the water surface of the simulated river; a thunder-lightning simulation control unit used to simulate thunder-lightning phenomena over the river; a dosing control unit used to control the concentration of pollutants in water of the simulated river; and an illumination control unit used to control day and night duration. Further, the water level control unit comprises a water inlet pipe, a water tank, a water pressure pump and a temperature control unit, wherein the water pressure pump is located in the water tank, and is connected to one end of the water inlet pipe; the other end of the water inlet pipe is provided with a water speed adjustment switch, and is connected to the water inlet; and the temperature control unit is located at the bottom of the water tank. Further, the temperature control unit is composed of an electrical bar, a condenser pipe and a fan, wherein the electrical bar and the condenser pipe are located below the water tank; and the fan is located at one side of the condenser pipe. Further, the simulated river flume is made of a glass material, and a stainless steel mesh is provided in the flume. Further, the wind simulation control unit is composed of fan blades, a wind source power system and a wind speed adjustment switch, wherein the fan blades are located above the simulated river flumes. Further, the thunder-lightning simulation control unit is composed of a lightning generation electrode and a thunder simulator. Further, the dosing control unit is composed a plurality of mother solution storage tanks, peristaltic pumps and reagent adding pipes, wherein the mother solution storage tanks, the peristaltic pumps and the reagent adding pipes are identical in number; the mother solution storage tanks are connected to one ends of corresponding peristaltic pumps, and the other ends of the peristaltic pumps are connected to corresponding reagent adding pipes; and the reagent adding pipes are located above corresponding simulated river flumes. Further, the illumination control unit is composed of a plurality of LED lamps and UV lamps located above the simulated river flumes. Further, the water treatment unit is composed of a filtered water storage tank, a circulating water pump, a circulating pipe and an adsorption filter system located in the filtered water storage tank, wherein the adsorption filter system is composed of ceramic porous adsorption material and filter cotton; the simulated river flume is also provided with a water discharge port at the other side; the filtered water storage tank is connected to the water discharge port by a pipe; and the water inlet end of the circulating water pump is located at the filter side of the adsorption filter system, and the water outlet end thereof is connected to the water inlet by the circulating pipe.

Further, the device further comprises a video monitoring unit located above the simulated river flumes. The technical solution provided by embodiments of the present invention at least has the beneficial effects that: Embodiments of the present invention provide an indoor microcosm simulation experiment device for simulating a river ecosystem. The simulates wind and thunder-lightning phenomena of nature through wind and thunder-lightning simulation control units, controls the water level of a simulated river through a water level control unit, controls the concentration of pollutants in water of the simulated river through a dosing control unit, achieves the cyclic flow of the river through a water treatment unit, and achieves simulation of the river ecosystem under natural conditions through reasonable cooperation among various control units, to complete the research on migration behaviors of pollutants in the river ecosystem and research on interaction of multiple processes and components. Other features and advantages of the present invention will be illustrated in the following description, and parts will become apparent from the description, or will be known through the implementation of the present invention. The objectives and other advantages of the invention will be realized and attained by structure particularly pointed out in the written description and claims hereof, as well as in the appended drawings. The technical solution of the invention will be further described in detail below in accordance with the accompanying drawings and embodiments.

Description of Drawings The drawings are used to provide further understanding for the present invention and constitute part of the description. The drawings are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation to the present invention. In the drawings: Fig. 1 is a structural diagram of the indoor microcosm simulation experiment device for simulating a river ecosystem provided by the present invention;

Fig. 2 is a structural diagram of Fig. 1 from another perspective provided by the present invention; and Fig. 3 is a structural diagram of Fig. 1 from a bottom perspective provided by the present invention. In the figures: 1. water treatment unit; 2. water level control unit; 21. water tank; 22. temperature control unit; 23. water speed adjustment switch; 3. simulated river flume; 4. wind simulation control unit; 41. fan blade; 42. wind source power system; 43. wind speed adjustment switch; 5. thunder-lightning simulation control unit; 6. dosing control unit; 61. mother solution storage tank; 62. peristaltic pump; 63. reagent adding pipe; 7. illumination control unit; 71. LED lamp; 72.UV lamp; 8. video monitoring unit.

Detailed Description Exemplary embodiments of the disclosure are described below in more detail with reference to the drawings. Although the exemplary embodiments of the disclosure are shown in the drawings, it should be understood that the disclosure can be realized in various forms, rather than limited by the embodiments elaborated herein. On the contrary, the purpose of providing the embodiments is to understand the disclosure more thoroughly and to completely communicate the scope of the disclosure to those skilled in the art. Embodiments of the present invention provide an indoor microcosm simulation experiment device for simulating a river ecosystem, which will be described in combination with the figures. As shown in Figs. 1-2, the support frame is used to fix a device body. The support frame is made of aluminum alloy material, to faciliate cleaning, and also plays a role of stable support. The device body is a body of the entire experimental device, is a place for simulating experiment, and may be divided into three layer structures from bottom to top, wherein the lower layer structure is provided with a water treatment unit 1 and a water level control unit 2, wherein the water treatment unit 1 is used to treat polluted experiment water in a simulated river, for example, treat biological feces, sediments and other a series of impurities through filtration and adsorption, ensuring the cyclic flow of the simulated river; the water level control unit 2 is used to control the water level of the stimulated river, to replenish water at any time when the water level is less than the water level requirements of the experimental conditions. The middle layer structure is provided with at least two simulated river flumes 3, one of which is a flume for experiment and the other is a flume for blank control; multiple simulated river flumes may be additionally provided according to the experimental requirements; the simulated river flume 3 is in a shape of rectangle, is provided with a water inlet at one side, and is provided with a water outlet at the other side; the water inlet is connected to the water level control unit 2; in addition, during the experiment, for the needs of the experiment, in order to ensure that water in the simulated river flume is at a constant temperature, a glass fence is also provided on the periphery of the simulated river flume, a strip-shaped water bath is formed between the fence and the outer wall of the simulated river flume; and a heating device is arranged in or outside the strip-shaped water bath to heat the water in the strip-shaped water bath, so as to realize the heating of the water bath of the simulated river flume. The upper layer structure is provided with a plurality of control units including: a wind simulation control unit 4 used to control wind speed of the water surface of the simulated river; a thunder-lightning simulation control unit 5 used to simulate thunder-lightning phenomena over the river; a dosing control unit 6 used to control the concentration of pollutants in water of the simulated river; and an illumination control unit 7 used to control day and night duration. In this embodiment, the device simulates wind and thunder-lightning phenomena of nature through wind and thunder-lightning simulation control units, controls the water level of a simulated river through a water level control unit, controls the concentration of pollutants in water of the simulated river through a dosing control unit, achieves cyclic flow of the river through a water treatment unit, and achieves simulation of the river ecosystem under natural conditions through reasonable cooperation among various control units, to complete the research on the impact of pollutants on the river water ecosystem, the research on migration behaviors of pollutats in the river ecosystem and research on interaction of multiple processes and components. Further, at the beginning of the experiment, water can be injected into the simulated river flumes 3 through the water level control unit 2. The water level control unit 2 comprises: a water inlet pipe, a water tank 21, a water pressure pump and a temperature control unit 22. The water tank is shown in Figs. 1-3. The water pressure pump is located in the water tank 21, and is connected to one end of the water inlet pipe, and the other end of the water inlet pipe is connected to the water inlet by providing a water speed adjustment switch 23. The water speed adjustment switch 23 may control the water inlet speed of the flumes. The water pipe and the water pressure pump are not shown. As shown in Fig. 3, the temperature control unit 22 located at the bottom of the water tank 21. Further, the temperature control unit 22 is composed of an electrical bar 221, a condenser pipe 222 and a fan 223, wherein the electrical bar and the condenser pipe are located below the water tank; and the fan is located at one side of the condenser pipe. According to specific experimental conditions, the temperature of water is controlled for heating and cooling. Further, the simulated river flume 3 is made of a glass material, the flume is open in the upper end, and a stainless steel mesh 31 is provided in the flume, the stainless steel mesh 31 being 20 cm away from the bottom of simulated river flume 3; for example, the inner wall of the flume is provided with a plurality of protrusions at the same horizontal plane, to support the stainless steel mesh 31, wherein the stainless steel mesh, for example, is used to isolate plankton and fish according to specific experimental contents. Further, as shown in Figs. 1-2, the wind simulation control unit 4 is composed of fan blades 41, a wind source power system 42 and a wind speed adjustment switch 43, wherein the fan blades 41 are located above the simulated river flumes 3, and are used to simulate waves generated by the natural river under the action of natural wind. Further, as shown in Figs. 1-2, the thunder-lightning simulation control unit 5 is composed of a lightning generation electrode and a thunder simulator, and is used to simulate thunder-lightning phenomena in nature, wherein the thunder simulator has the following relevant parameters: power: 30 Watt sensitivity: 96 db size: 70mmx70mmx45mm impedance: 8 Q. Further, the dosing control unit 6 is composed a plurality of mother solution storage tanks 61, peristaltic pumps 62 and reagent adding pipes 63, wherein the mother solution storage tanks 61, the peristaltic pumps 62 and the reagent adding pipes 63 are identical in number; the number is the same as that of the simulated river flumes, so that it is guaranteed that all simulated river flumes 3 have respective mother solution storage tanks 61, peristaltic pump 62 and reagent adding pipes 63, that is, it is guaranteed that during the experiment, the device is used alone, which may not cause the device to be contaminated with other water and then cause errors in the experimental results. The mother solution storage tanks 61 are connected to one ends of corresponding peristaltic pumps 62, and the other ends of the peristaltic pumps 62 are connected to corresponding reagent adding pipes 63; and the reagent adding pipes 63 are located above corresponding simulated river flumes 3. Further, as shown in Fig. 3, the illumination control unit 7 is composed of a plurality of LED lamps 71 and UV lamps 72 located above the simulated river flumes 3, and can simulate day and night alternating phenomena. Further, as shown in Fig. 3, the water treatment unit 1 is composed of a filtered water storage tank 11, a circulating water pump, a circulating pipe and an adsorption filter system located in the filtered water storage tank; and some components are not shown, wherein the adsorption filter system is composed of ceramic porous adsorption material and filter cotton; the simulated river flume 3 is also provided with a water discharge port at the other side; the filtered water storage tank 11 is connected to the water discharge port by a pipe; and the water inlet end of the circulating water pump is located at the filter side of the adsorption filter system, and the water outlet end thereof is connected to the water inlet of the simulated river flume 3 by the circulating pipe, achieving cyclic flow of the simulated river. Further, as shown in Fig. 3, the device further comprises a video monitoring unit 8 located above the simulated river flumes 3, achieving real-time monitoring and recording of the experimental process. For example, as shown in Fig. 1, three simulated river flumes are provided in parallel, wherein the first one may used as blank control, and the other two may be used as experimental groups. The blank control has the same working conditions as the two experimental groups except for no chemical. For example, setting conditions: temperature: 21-25°C; wind speed:1.8-3rm/s; illumination: 12-16 h per day; the experiment water should by illuminated by continuous and homogeneous light, for example, cool white type or daylight type, with wavelength of 400-700 nm, and illumination intensity within the range of -120uE/(m 2 .s). Dissolved oxygen concentration: at least 60% of the air saturation value; the second one is added with reagent A , and the third one is added with reagent B, to represent different pollutants; under the same conditions (30-365 days), observe the living conditions of planktonic microorganisms and do a good test counting. Obviously, those skilled in the art could implement various modifications to and variations of the present invention without departing from the spirit and scope of the present invention. So, the present invention is intended to include the modifications and variations if the amendments and variations of the present invention belong to claims of the present invention and the equivalent technical scope.

Claims (5)

1. Claims 1. An indoor microcosm simulation experiment device for simulating a river ecosystem, comprising: a support frame used to fix a device body, the device body including three layer structures from bottom to top, wherein the lower layer structure is provided with a water treatment unit and a water level control unit, the water treatment unit being used to treat polluted experiment water in a simulated river; the water level control unit being used to control the water level of the simulate river; the middle layer structure is provided with at least two simulated river flumes, wherein each of the simulated river flumes is provided with a water inlet at one side, and the water inlet is connected to the water level control unit; the upper layer structure is provided with: a wind simulation control unit used to control the wind speed of the water surface of the simulated river; a thunder-lightning simulation control unit used to simulate thunder-lightning phenomena over the river; a dosing control unit used to control the concentration of pollutants in water of the simulated river; and an illumination control unit used to control day and night duration.
2. 2. The device of claim 1, wherein the water level control unit comprises a water inlet pipe, a water tank, a water pressure pump and a temperature control unit, wherein the water pressure pump is located in the water tank, and is connected to one end of the water inlet pipe; the other end of the water inlet pipe is provided with a water speed adjustment switch, and is connected to the water inlet; and the temperature control unit is located at the bottom of the water tank.
3. 3. The device of claim 2, wherein the temperature control unit is composed of an electrical bar, a condenser pipe and a fan, wherein the electrical bar and the condenser pipe are located below the water tank; and the fan is located at one side of the condenser pipe.
4. 4. The device of claim 1, wherein the wind simulation control unit is composed of fan blades, a wind source power system and a wind speed adjustment switch, wherein the fan blades are located above the simulated river flumes.
5. 5. The device of claim 1, wherein the dosing control unit is composed a plurality of mother solution storage tanks, peristaltic pumps and reagent adding pipes, wherein the mother solution storage tanks, the peristaltic pumps and the reagent adding pipes are identical in number; the mother solution storage tanks are connected to one ends of corresponding peristaltic pumps, and the other ends of the peristaltic pumps are connected to corresponding reagent adding pipes; and the reagent adding pipes are located above corresponding simulated river flumes.