A simulated decontamination device for an ecological ditch

Abstract

The utility model discloses a simulation decontamination device of ecological ditch, including the ditch, the matrix of the bottom of ditch is laid and plants hydrophyte can adsorb pollutant, the first side of ditch is equipped with a plurality of first fender, the second side of ditch is equipped with a plurality of second fender, the first fender with the second side of ditch has the gap between, the second fender with the first side of ditch has the gap between, a plurality of the first fender with a plurality of the second fender alternate arrangement, the first fender with the second fender between adjacent has the gap. The utility model has the advantages of simple structure, simulation effect is good and decontamination ability is strong.

Description

Technical Field

[0001] This utility model relates to the field of water pollution control technology, specifically to a simulated pollution control device for ecological ditches. Background Technology

[0002] To ensure the supply of agricultural products, pesticides and fertilizers are often used in agricultural production, which inevitably leads to over-fertilization and excessive fertilization. At the same time, farmland irrigation is mostly based on flood irrigation, resulting in low irrigation water utilization. As a result, water that is not absorbed and utilized by crops carries nutrients such as nitrogen and phosphorus, as well as a small amount of soil organic matter, out of the farmland, forming farmland runoff. Combined with rainfall runoff, this increases the volume of farmland runoff and aggravates pollution.

[0003] Currently, process interruption is a common method for treating farmland runoff. Since farmland runoff flows through ditches before entering the final water body, blocking the loss of elements such as nitrogen and phosphorus during this process can effectively prevent eutrophication of the water body. Therefore, ecological ditch decontamination technology has become one of the popular methods for treating farmland runoff.

[0004] Laboratory simulation is a common method for testing and optimizing the ability of ecological ditches to remove pollutants from farmland runoff. However, existing related technical solutions have the following drawbacks:

[0005] 1. Due to the long actual ecological ditches, but the limited space in the laboratory, the designed ecological ditches are often short, making it difficult to simulate the hydraulic retention time of real wastewater.

[0006] 2. Ecological ditches have limited ability to remove pollutants and are unlikely to achieve the expected results. Utility Model Content

[0007] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a simulated decontamination device for ecological ditches that has a simple structure, good simulation effect and strong decontamination ability.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0009] A simulated pollution removal device for an ecological ditch includes a ditch, the bottom of which is covered with a substrate that can absorb pollutants and planted with aquatic plants. Multiple first water-blocking plates are provided on a first side of the ditch, and multiple second water-blocking plates are provided on a second side of the ditch. There is a gap between the first water-blocking plates and the second side of the ditch, and there is a gap between the second water-blocking plates and the first side of the ditch. Multiple first water-blocking plates and multiple second water-blocking plates are arranged alternately, and there is a gap between adjacent first water-blocking plates and second water-blocking plates.

[0010] As a further improvement to the above technical solution: the distance between adjacent first and second water-blocking plates is equal.

[0011] As a further improvement to the above technical solution: at least one permeable dam capable of absorbing pollutants is provided in the ditch, and the permeable dam is located between the adjacent first baffle and second baffle.

[0012] As a further improvement to the above technical solution: the matrix is ​​a ceramsite matrix, and the permeable dam is filled with ceramsite.

[0013] As a further improvement to the above technical solution: the height of the bottom of the ditch gradually decreases from the water inlet end to the water outlet end.

[0014] As a further improvement to the above technical solution: the water outlet end of the ditch is provided with multiple water outlets at different heights, and at least one of the water outlets is located at the bottom of the ditch.

[0015] As a further improvement to the above technical solution: the water inlet end of the ditch is provided with an overflow weir.

[0016] As a further improvement to the above technical solution: the aquatic plants include lodging-resistant aquatic plants located at the water inlet end of the ditch and economical aquatic plants located at the water outlet end of the ditch.

[0017] As a further improvement to the above technical solution: the width of the ditch gradually decreases from top to bottom.

[0018] As a further improvement to the above technical solution: the simulated pollution removal device for the ecological ditch also includes a water distribution tank connected to the water inlet end of the ditch, and a delivery pump and a flow meter are provided between the water distribution tank and the ditch.

[0019] Compared with the prior art, the advantages of this utility model are:

[0020] This utility model discloses a simulated pollution removal device for ecological ditches. Multiple first baffles are installed on the first side of the ditch, and multiple second baffles are installed on the second side of the ditch. Gaps exist between the first baffles and the second side of the ditch, and gaps exist between the second baffles and the first side of the ditch. These multiple first and second baffles are arranged alternately, with gaps between adjacent first and second baffles, forming a continuous, curved flow channel within the ditch. On one hand, this significantly increases the hydraulic residence time of wastewater within the ditch, solving the problem of large footprint required for simulation devices to accurately simulate the hydraulic residence time of wastewater in ecological ditches. On the other hand, it can also simulate the improved pollution removal effect of extending the hydraulic residence time of water within the ditch. Furthermore, by laying a substrate at the bottom of the ditch and planting aquatic plants, the substrate can absorb pollutants in the wastewater, and the substrate serves as the foundation for planting aquatic plants. The aquatic plants further absorb pollutants from the wastewater, and the substrate and aquatic plants synergistically absorb pollutants. Nitrogen and phosphorus adsorbed in the substrate during the wet season can be absorbed and decomposed by the aquatic plants during the dry season, preparing the substrate for adsorption during the next wet season, greatly improving the wastewater treatment effect and efficiency. This invention has the advantages of simple structure, good simulation effect, and strong decontamination ability. Attached Figure Description

[0021] Figure 1 This is a top view schematic diagram of a simulated pollution removal device for an ecological ditch according to the present invention.

[0022] Figure 2 This is a schematic diagram of the main cross-sectional structure of a simulated pollution removal device for an ecological ditch according to the present invention.

[0023] Figure 3 This is a schematic diagram of the structure of the water outlet end of the ditch in this utility model.

[0024] Figure 4 This is a front view structural diagram of the first and second water baffles of this utility model.

[0025] The labels in the diagram represent: 1. Ditch; 11. Outlet; 21. First baffle; 22. Second baffle; 3. Permeable dam; 41. Pump; 42. Flow meter; 5. Substrate; 6. Aquatic plants; 7. Water distribution tank; 8. Overflow weir. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] like Figures 1 to 4 As shown, the simulated pollution removal device for the ecological ditch in this embodiment includes a ditch 1. The bottom of the ditch 1 is covered with a substrate 5 that can absorb pollutants and planted with aquatic plants 6. Multiple first water-blocking plates 21 are provided on the first side of the ditch 1, and multiple second water-blocking plates 22 are provided on the second side of the ditch 1. There is a gap between the first water-blocking plate 21 and the second side of the ditch 1, and there is a gap between the second water-blocking plate 22 and the first side of the ditch 1. The multiple first water-blocking plates 21 and the multiple second water-blocking plates 22 are arranged alternately, and there is a gap between adjacent first water-blocking plates 21 and second water-blocking plates 22.

[0031] Preferably, the thickness of the substrate 5 laid at the bottom of the ditch 1 is greater than 10cm.

[0032] When the simulated sewage removal device of this ecological ditch is in use, wastewater flows into the ditch 1 through the inlet, flows through the gap between the first baffle 21 and the second side of the ditch 1, then flows through the gap between the first baffle 21 and the adjacent second baffle 22, and continues to flow through the gap between the second baffle 22 and the first side of the ditch 1, continuously flowing in the continuous curved flow channel formed by multiple alternating first baffles 21 and multiple second baffles 22.

[0033] Through the above scientific design, the simulated pollution removal device for this ecological ditch has the following advantages:

[0034] Firstly, by installing multiple first baffles 21 on the first side of ditch 1 and multiple second baffles 22 on the second side of ditch 1, with gaps between the first baffles 21 and the second side of ditch 1, and gaps between the second baffles 22 and the first side of ditch 1, and by arranging the multiple first baffles 21 and multiple second baffles 22 alternately, with gaps between adjacent first baffles 21 and second baffles 22, a continuous and curved flow channel is formed within ditch 1. On the one hand, this greatly increases the hydraulic residence time of wastewater within ditch 1, solving the problem of large footprint required for simulation devices to accurately simulate the hydraulic residence time of wastewater in ecological ditches. On the other hand, it can also simulate the performance improvement of pollution removal efficiency by extending the hydraulic residence time of water flow within ditch 1.

[0035] Second, by laying substrate 5 at the bottom of ditch 1 and planting aquatic plants 6, substrate 5 can absorb pollutants in wastewater on the one hand, and on the other hand, substrate 5 serves as the foundation for planting aquatic plants 6. The plants further absorb pollutants from the wastewater, greatly improving the decontamination effect and efficiency. During the wet season of agricultural wastewater, substrate 5 can quickly adsorb and store pollutants in the wastewater, while aquatic plants 6 can utilize the nitrogen and phosphorus in the wastewater for growth. During the dry season, the drainage volume decreases, and the nitrogen and phosphorus content in the water also decreases. Aquatic plants 6 can absorb and utilize the nitrogen and phosphorus adsorbed and stored by substrate 5 during the wet season for growth, and at the same time, they can desorb from substrate 5, preparing for the next wet season.

[0036] like Figure 1 and Figure 2 As shown, in this embodiment, the distance between adjacent first baffle plates 21 and second baffle plates 22 is equal. This ensures that the width of the flow channel within the ditch 1 is consistent, preventing the wastewater from being affected by changes in the flow channel width, thus avoiding impact on the hydraulic retention time and decontamination effect, and preventing any impact on the simulation effect of the simulation device.

[0037] like Figure 1 and Figure 2 As shown in this embodiment, two permeable dams 3 capable of adsorbing pollutants are provided in the ditch 1. The permeable dams 3 are located between adjacent first baffles 21 and second baffles 22. By setting permeable dams 3 between adjacent first baffles 21 and second baffles 22 to adsorb pollutants in wastewater, the multiple permeable dams 3 allow wastewater to undergo multiple adsorption and decontamination processes as it flows through the ditch 1, greatly improving the decontamination effect and efficiency.

[0038] Preferably, the gap between adjacent first baffle plate 21 and second baffle plate 22 is greater than 15cm, so that the thickness of the permeable dam 3 is greater than 15cm and the height is greater than 35cm.

[0039] like Figures 1 to 3 As shown, in this embodiment, the matrix 5 is a ceramsite matrix, and the permeable dam 3 is filled with ceramsite. Ceramsite has good absorption effect and high absorption efficiency.

[0040] Preferably, the filler material for the matrix 5 and the permeable dam 3 is iron-manganese precipitated mud ceramsite, which has good adsorption properties and low cost.

[0041] like Figure 2 As shown in this embodiment, the height of the bottom of ditch 1 gradually decreases from the inlet to the outlet. This ensures smooth water flow within ditch 1, conforms to the gradient of a real ecological ditch inlet, and further enhances the realism of the simulation.

[0042] like Figure 3 As shown in this embodiment, the outlet end of the ditch 1 is provided with four outlets 11 at different heights, and one outlet 11 is located at the bottom of the ditch 1. By opening and closing the outlets 11 at different heights, the water level can be precisely controlled, and the outlet 11 located at the bottom of the ditch 1 facilitates the complete discharge of wastewater from the ditch 1.

[0043] like Figure 1 and Figure 2 As shown in this embodiment, an overflow weir 8 is provided at the inlet end of the ditch 1. By setting the overflow weir 8, the actual way of farmland wastewater discharge is simulated, so that the wastewater enters the ditch 1 in an overflow manner, further improving the realism of the simulation.

[0044] like Figure 1 and Figure 2 As shown, in this embodiment, the aquatic plants 6 include lodging-resistant aquatic plants located at the inlet end of the ditch 1 and economical aquatic plants located at the outlet end of the ditch 1. The water flow at the inlet end of the ditch 1 has a large impact force, so lodging-resistant aquatic plants need to be planted to ensure the survival rate of the plants. Economical aquatic plants are planted at the outlet end of the ditch 1 to improve economic benefits.

[0045] like Figure 3 As shown, in this embodiment, the width of the ditch 1 gradually decreases from top to bottom. The trapezoidal structure, wider at the top and narrower at the bottom, makes the ditch 1 highly stable.

[0046] like Figure 1 and Figure 2 As shown, in this embodiment, the simulated sewage treatment device for the ecological ditch also includes a water distribution tank 7 connected to the water inlet of the ditch 1. A delivery pump 41 (e.g., a peristaltic pump) and a flow meter 42 (e.g., a rotor flow meter) are provided between the water distribution tank 7 and the ditch 1. By storing wastewater in the water distribution tank 7, the wastewater is pumped into the ditch 1 by the delivery pump 41, and the wastewater flow rate is detected by the flow meter 42.

[0047] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A simulated decontamination device for an eco-trench, characterized by: The ditch (1) is provided with a substrate (5) that can absorb pollutants and aquatic plants (6) are planted at the bottom of the ditch (1). Multiple first baffles (21) are provided on the first side of the ditch (1) and multiple second baffles (22) are provided on the second side of the ditch (1). There is a gap between the first baffles (21) and the second side of the ditch (1) and a gap between the second baffles (22) and the first side of the ditch (1). Multiple first baffles (21) and multiple second baffles (22) are arranged alternately, and there is a gap between adjacent first baffles (21) and second baffles (22).

2. The apparatus for simulating the removal of pollutants from an ecological ditch according to claim 1, characterized in that: The distance between the adjacent first baffle plate (21) and the second baffle plate (22) is equal.

3. The simulated pollution removal device for ecological ditches according to claim 1, characterized in that: The ditch (1) is provided with at least one permeable dam (3) that can absorb pollutants, and the permeable dam (3) is located between the adjacent first baffle (21) and second baffle (22).

4. The simulated pollution removal device for ecological ditches according to claim 3, characterized in that: The matrix (5) is a ceramsite matrix, and the permeable dam (3) is filled with ceramsite.

5. The simulated pollution removal device for ecological ditches according to claim 1, characterized in that: The height of the bottom of the ditch (1) gradually decreases from the inlet end to the outlet end.

6. The simulated pollution removal device for ecological ditches according to claim 1, characterized in that: The ditch (1) has multiple outlets (11) at different heights at its outlet end, and at least one outlet (11) is located at the bottom of the ditch (1).

7. The simulated pollution removal device for ecological ditches according to claim 1, characterized in that: The ditch (1) is equipped with an overflow weir (8) at the water inlet end.

8. The simulated pollution removal device for ecological ditches according to any one of claims 1 to 7, characterized in that: The aquatic plants (6) include lodging-resistant aquatic plants located at the inlet end of the ditch (1) and economical aquatic plants located at the outlet end of the ditch (1).

9. The simulated pollution removal device for ecological ditches according to any one of claims 1 to 7, characterized in that: The width of the ditch (1) gradually decreases from top to bottom.

10. The simulated pollution removal device for ecological ditches according to any one of claims 1 to 7, characterized in that: It also includes a water distribution tank (7) connected to the water inlet of the ditch (1), and a delivery pump (41) and a flow meter (42) are provided between the water distribution tank (7) and the ditch (1).

Images