An artificial wetland device

Abstract

The present invention discloses an artificial wetland device, comprising a placement trough and a box body, wherein the placement trough is horizontally arranged with a trough opening facing upwards, a partition plate is horizontally arranged in the placement trough for dividing the placement trough into an upper trough chamber located at the top and a lower chamber located at the bottom, the partition plate is covered with through holes penetrating therethrough from top to bottom, a water seepage layer is laid in the partition plate, the upper trough chamber is used for placing a turf layer, a first drainage hole communicating with the lower chamber is arranged on a trough side wall of the placement trough, and a filter is arranged at the first drainage hole, the placement trough is placed at the upper end of the box body, the upper end of the box body is open, and a second drainage hole penetrating therethrough is arranged on the bottom wall, and the turf layer is prevented from being immersed in acidic stagnant water by arranging the water seepage layer and the partition plate in the placement trough, thereby improving the growth environment of the turf layer and prolonging the life of the turf layer.

Description

Technical Field

[0001] The invention belongs to the field of coal mines, and in particular relates to an artificial wetland device in a mine. Background Art

[0002] Acidic coal mine drainage pollution refers to the phenomenon that mining industrial wastewater and domestic sewage containing various pollutants and toxic substances change their normal composition after being discharged into the water body, exceeding the self-purification capacity of the water, thereby deteriorating the water body and destroying the original use of the water body. Acidic coal mine drainage is formed by the oxidation of reducing sulfide minerals during mining, transportation, mineral processing, waste rock discharge and tailings storage through the oxidation of air, precipitation and bacteria. Acidic mine drainage has a low pH value and contains high concentrations of sulfate and soluble heavy metal ions. In order to facilitate the treatment of acidic wastewater, a composite flow artificial wetland structure based on coal mine acidic drainage pollution control will be used. In the existing composite flow artificial wetland structure for the treatment of acidic coal mine wastewater pollution, after the wastewater is discharged into the wetland, the vegetation on the surface of the wetland will be soaked by the wastewater. On the one hand, the acidic wastewater will cause the death of the vegetation on the surface of the wetland. On the other hand, after the wastewater is discharged to the surface of the wetland, it is inconvenient for the staff or other personnel to walk on the wetland. In addition, the existing composite flow artificial wetland structure for the treatment of acidic coal mine wastewater pollution is not convenient for the staff to replace the bag of medicine that reacts with the acidic substances in the wastewater. Summary of the invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide an artificial wetland device which has a simple structure, strong practicality, good aesthetics and convenient maintenance.

[0004] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: an artificial wetland device, comprising a placement trough and a box body, the placement trough is horizontally arranged with its trough opening facing upward, a partition plate is horizontally arranged in the placement trough to divide the placement trough into an upper trough chamber located above and a lower chamber located below, the partition plate is covered with through holes penetrating therethrough from top to bottom, a water permeable layer is laid on the partition plate, the upper trough chamber is used to place a turf layer, a first drainage hole communicating with the lower chamber is provided on the trough side wall of the placement trough, and a filter is provided at the first drainage hole, the upper end of the box body is open, and a second drainage hole penetrating therethrough is provided on the bottom wall, and the placement trough is placed at the upper end of the box body.

[0005] The beneficial effect of the above technical solution is that the turf layer is prevented from being immersed in acidic water by arranging a water seepage layer and a partition plate in the placement groove, thereby improving the growth environment of the turf layer and extending the life of the turf layer.

[0006] In the above technical solution, a plurality of partitions are provided in the placement groove above the water seepage layer. The partitions are vertically arranged in the upper groove chamber and distributed at intervals. Both ends of the partitions extend to the inner side wall close to the placement groove. The plurality of partitions divide the upper groove chamber into a plurality of strip-shaped small grid grooves, and each of the small grid grooves is used to place the turf layer.

[0007] The beneficial effect of the above technical solution is that the supporting capacity of the turf layer is improved by the partition, and the partition can disperse part of the pressure when there is trampling.

[0008] In the above technical solution, the horizontal cross-sections of the placement groove and the box body are both square, and a plurality of columns are provided at the upper end of the box body, the upper ends of the plurality of columns are connected to the lower end of the placement groove, and there is a gap between the placement groove and the box body.

[0009] The beneficial effects of the above technical solution are: its structure is simple and beautiful, and it is easy to assemble multiple artificial wetland devices into an artificial wetland.

[0010] In the above technical solution, a plurality of limiting holes are arranged at the lower end of the placement slot, and the plurality of limiting holes correspond one-to-one to the plurality of columns. The placement slot is placed above the box body, and the upper end of each column extends into the corresponding limiting hole.

[0011] The beneficial effect of the above technical solution is that the placement tank can be removed from the upper end of the box body to facilitate maintenance and cleaning of the box body.

[0012] In the above technical solution, two horizontally arranged trays are detachably provided in the box body, and the two trays are spaced apart in the upper and lower parts of the box body, the lower end of each tray is covered with small holes, a gravel layer is provided on the upper tray, and a mixed sand layer is provided on the lower tray.

[0013] The beneficial effect of the above technical solution is that the gravel layer and the mixed sand layer have performed preliminary filtration on the mine wastewater.

[0014] In the above technical solution, a water inlet is provided at the upper end of the groove wall on any side of the box body, and the water inlet is located above the upper tray.

[0015] The beneficial effect of the above technical solution is that the acidic wastewater in the mining area is directly discharged into the box through the water inlet, so that the acidic wastewater is filtered in the box before being discharged.

[0016] In the above technical solution, two horizontally arranged sockets are provided on the side wall of the box body below the two trays and spaced apart in the up-down direction. A tray slot is inserted into the box body at each socket. A water seepage hole is provided in the middle of the tray slot which passes through it up and down. A water-permeable bag containing alkaline material is laid flat in the tray slot. Under the action of external force, the tray slot can be inserted into the box body or pulled out of the box body through the corresponding socket.

[0017] The beneficial effect of the above technical solution is that the permeable bag can neutralize the acid water passing through it to further treat the mine sewage harmlessly.

[0018] In the above technical solution, the bottom wall of the box body is arranged obliquely, and the second drainage hole is arranged at the lowest horizontal height of the bottom wall of the box body.

[0019] The beneficial effect of the above technical solution is that water will not accumulate in the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A simplified structural diagram of an artificial wetland device according to an embodiment of the present invention;

[0021] Figure 2 A distribution diagram of the partition and the turf layer of the artificial wetland device according to an embodiment of the present invention;

[0022] Figure 3 This is the second structural diagram of the artificial wetland device according to the embodiment of the present invention;

[0023] Figure 4 The figure is a simplified structural diagram of the box body according to an embodiment of the present invention.

[0024] In the figure: 1 placement trough, 11 partition plate, 111 partition plate, 12 water seepage layer, 13 first drainage hole, 14 filter, 15 limit hole, 2 box body, 21 second drainage hole, 22 column body, 23 tray, 231 gravel layer, 232 mixed sand layer, 24 water inlet, 25 socket, 26 tray slot, 27 permeable bag, 3 turf layer. DETAILED DESCRIPTION

[0025] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0026] like Figure 1As shown, this embodiment provides an artificial wetland device, including a placement trough 1 and a box body 2, wherein the placement trough 1 is horizontally arranged with its trough opening facing upward, and a partition plate 11 is horizontally arranged in the placement trough 1 to divide the placement trough 1 into an upper trough chamber located above and a lower chamber located below, and the partition plate 11 is covered with through holes penetrating therethrough from top to bottom, and a water-permeable layer 12 is laid on the partition plate 11, and the upper trough chamber is used to place a turf layer 3, and a first drainage hole 13 connected to the lower chamber is provided on the trough side wall of the placement trough 1, and a filter 14 is provided at the first drainage hole 13, and the placement trough is placed at the upper end of the box body 2, and the upper end of the box body 2 is open, and a second drainage hole 21 penetrating therethrough is provided on the bottom wall thereof, and the turf layer is prevented from being immersed in acidic stagnant water by arranging a water-permeable layer and a partition plate in the placement trough, thereby improving the growth environment of the turf layer and extending the life of the turf layer.

[0027] like Figure 2 As shown, in the above technical solution, a plurality of partitions 111 are provided in the placement groove 1 above the water-permeable layer 12, and the partitions 111 are vertically arranged in the upper groove chamber and distributed at intervals, and both ends of the partitions 111 extend to the inner wall close to the placement groove 1, and the plurality of partitions 111 divide the upper groove chamber into a plurality of strip-shaped small grid grooves, and each of the small grid grooves is used to place the turf layer 3, so that the supporting capacity of the turf layer is improved by the partitions, and the partitions can disperse part of the pressure when there is trampling.

[0028] Among them, the horizontal cross-sections of the placement trough 1 and the box body 2 in the above technical scheme are both square, and a plurality of columns 22 are provided at the upper end of the box body 2, the upper ends of the plurality of columns 22 are connected to the lower end of the placement trough 1, and there is a gap between the placement trough 1 and the box body 2. Its structure is simple and beautiful, and it is convenient to assemble a plurality of artificial wetland devices into an artificial wetland.

[0029] like Figure 3 As shown, a plurality of limiting holes 15 are provided at the lower end of the placement slot 1 in the above technical solution, and the plurality of limiting holes 15 correspond one-to-one to the plurality of columns 22. The placement slot 1 is placed above the box body 2, and the upper end of each of the columns 22 extends into the corresponding limiting hole 15 to lift the placement slot 1, so that the placement slot can be removed from the upper end of the box body to facilitate maintenance and cleaning inside the box body.

[0030] like Figure 4As shown, in the above technical solution, two horizontally arranged trays 23 are detachably provided in the box body 2, and the two trays 23 are spaced apart in the upper and lower parts of the box body 2, and the lower end of each tray 23 is covered with small holes (the shape of the small holes is not limited, and can be round holes or strip holes), and a gravel layer 231 is provided on the upper tray, and a mixed sand layer 232 is provided on the lower tray, wherein the gravel layer 231 and the mixed sand layer 232 filter the mine wastewater for preliminary filtration.

[0031] In the above technical solution, a water inlet 24 is provided at the upper end of the groove wall on any side of the box body 2, and the water inlet is located above the upper tray 23, so that the acidic wastewater in the mining area is directly discharged into the box body through the water inlet, so that the acidic wastewater is filtered in the box body before being discharged.

[0032] In the above technical solution, two horizontally arranged sockets 25 are provided on the side wall of the box body 2 below the two trays 23 at intervals in the vertical direction. A tray slot 26 is inserted into the box body 2 at each socket 25. A water seepage hole is provided in the middle of the tray slot 26, which runs through it vertically. A water-permeable bag 27 containing alkaline material is laid flat in the tray slot 26. The tray slot 26 can be inserted into the box body 2 or pulled out from the box body 2 through the corresponding socket 25 under the action of external force. In this way, the water-permeable bag can neutralize the acid water passing through it to further harmlessly treat the mine sewage, and the tray slot can be conveniently pulled out of the box body to replace the water-permeable bag. Among them, the socket and the tray slot are matched in size, so that the gap between the two can be reduced after the tray slot is inserted to prevent the filter residue from seeping out.

[0033] In the above technical solution, the bottom wall of the box body 2 is arranged at an angle, and the second drainage hole 21 is arranged at the lowest level of the bottom wall of the box body 2, so that no water will accumulate in the box body.

[0034] Among them, the first drainage hole at the lower end of the placement tank can be set on the bottom wall of the placement tank, so that the wastewater is directly discharged into the box for treatment. At this time, there is no need to set a filter 14, so that the wastewater in the placement tank directly enters the box for filtration.

[0035] By suspending the placement trough above the box body, the box body is prevented from being soaked by wastewater. Even if the box body is filled with wastewater, the placement trough will not be affected. Even when people walk on the placement trough, the sewage carried on the boots will slowly seep out through the first drainage hole in the placement trough, and the turf will not be damaged by the wastewater, thus protecting the growth of the turf.

[0036] The box body, placement slot, partition plate and baffle are all made of hard steel plates, and have good supporting performance.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An artificial wetland device, characterized in that: The invention comprises a placement groove (1) and a box body (2), wherein the placement groove (1) is arranged horizontally with its groove opening facing upwards, and a partition plate (11) is arranged horizontally in the placement groove (1) to divide the placement groove (1) into an upper groove chamber located at the top and a lower chamber located at the bottom, and the partition plate (11) is covered with through holes penetrating therethrough from top to bottom, and a water permeable layer (12) is provided on the partition plate (11), and the upper groove chamber is used to place a turf layer (3), and a first drainage hole (13) communicating with the lower chamber is provided on the groove side wall of the placement groove (1), and a filter (14) is provided at the first drainage hole (13). ), the upper end of the box body (2) is open, and a second drainage hole (21) is provided on the bottom wall thereof and passes through the second drainage hole (21), and the placement groove is placed at the upper end of the box body (2); the horizontal cross-sections of the placement groove (1) and the box body (2) are both square, and a plurality of columns (22) are provided at the upper end of the box body (2), the upper ends of the plurality of columns (22) are connected to the lower end of the placement groove (1), and a gap is provided between the placement groove (1) and the box body (2); the box body (2), the placement groove (1) and the partition plate (11) are all made of hard steel plates, and the box body (2) is used to filter acidic wastewater.

2. The artificial wetland device according to claim 1, characterized in that: A plurality of partitions (111) are provided in the placement trough (1) above the water seepage layer (12). The partitions (111) are vertically arranged in the upper trough chamber and are spaced apart. Both ends of the partitions (111) extend to the inner side wall close to the placement trough (1). The plurality of partitions (111) divide the upper trough chamber into a plurality of strip-shaped small cells, each of which is used to place a turf layer (3).

3. The artificial wetland device according to claim 1, characterized in that: A plurality of limiting holes (15) are provided at the lower end of the placement groove (1), and the plurality of limiting holes (15) correspond one-to-one to the plurality of columns (22). The placement groove (1) is placed above the box body (2), and the upper end of each column (22) extends into the corresponding limiting hole (15).

4. The artificial wetland device according to claim 1, characterized in that: Two horizontally arranged trays (23) are detachably provided in the box body (2), and the two trays (23) are spaced apart in the upper and lower parts of the box body (2), the lower end of each tray (23) is covered with small holes, the tray located at the upper part is provided with a gravel layer (231), and the tray located at the lower part is provided with a mixed sand layer (232).

5. The artificial wetland device according to claim 4, characterized in that: A water inlet (24) is provided at the upper end of the groove wall on any side of the box body (2), and the water inlet is located above the upper tray (23).

6. The artificial wetland device according to claim 5, characterized in that: Two horizontally arranged sockets (25) are provided on the side wall of the box body (2) below the two trays (23) at intervals in the vertical direction. A tray slot (26) is inserted into the box body (2) at each of the sockets (25). A water seepage hole is provided in the middle of the tray slot (26) and passes through the tray slot (26) vertically. A water permeable bag (27) containing an alkaline material is laid flat in the tray slot (26). The tray slot (26) can be inserted into the box body (2) or drawn out of the box body (2) through the corresponding socket (25) under the action of an external force.

7. The artificial wetland device according to claim 6, characterized in that: The inner side surface of the bottom wall of the box body (2) is arranged at an inclination, and the second drainage hole (21) is arranged at the lowest horizontal position of the bottom wall of the box body (2).

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