1. The utility model provides an artificial wetland system, artificial wetland system part is located in the river course, its characterized in that includes:

the base is fixed on the river bank of the river channel;

the supporting platform extends along the direction vertical to the base, and one end of the supporting platform is fixed on one side, far away from the river bank, of the base;

the overwater wetland purification unit is hinged to one end, away from the base, of the support table and is used for purifying sewage drained into the overwater wetland purification unit;

and one end of the lifting mechanism is arranged on one side, far away from the river channel, of the base, the other end of the lifting mechanism is hinged to the water wetland purification unit, and the lifting mechanism is used for driving the water wetland purification unit to ascend relative to the base when the river channel is flooded, so that the water wetland purification unit is positioned above river water of the river channel, and driving the water wetland purification unit to descend relative to the base when the river channel is not flooded, so that the water wetland purification unit is positioned in river water of the river channel.

2. The constructed wetland system of claim 1, wherein the elevating mechanism comprises:

a drive section;

the energy supply part is in power connection with the driving part; and

the driving part is in transmission connection with the telescopic rod, one end of the telescopic rod is connected to the base, and the other end of the telescopic rod is hinged with the overwater wetland purification unit; the drive division is used for when energy supply portion provides power the drive the telescopic link extension is in order to drive wetland purification unit on water for the base rises, and the drive the telescopic link shrink in order to drive wetland purification unit on water for the base descends.

3. The constructed wetland system of claim 2,

the energy supply part comprises a solar panel, the solar panel is arranged on the base and is electrically connected with the driving part, and the solar panel is used for supplying power to the driving part;

or the energy supply part comprises a water wheel, a hydroelectric generator and an electric energy storage device, the hydroelectric generator is connected with the water wheel, the hydroelectric generator is respectively electrically connected with the driving part and the electric energy storage device, the water wheel is arranged in river water of a river channel, and the hydroelectric generator is used for converting water energy generated by rotation of the water wheel into electric energy so as to supply power to the driving part; and the electrical energy storage device is used for storing the electrical energy;

or the energy supply part comprises a wind wheel, a wind driven generator and an electric energy storage device, the wind driven generator is connected with the wind wheel, the wind wheel is arranged on the base, and the wind driven generator is used for converting wind energy generated by rotation of the wind wheel into electric energy to supply power to the driving part; and the electrical energy storage device is used for storing the electrical energy.

4. The constructed wetland system of claim 2, wherein the above-water wetland purification unit is rotatably connected with the upper end of the support platform through a rotating member, so that the above-water wetland purification unit can be rotated to be above the river channel or above the river bank through the rotating member; and the outer wall of the overwater wetland purification unit is wound with metal wires.

5. The artificial wetland system of claim 1, wherein the lifting mechanism comprises a link mechanism, one end of the link mechanism is connected to the base, and the other end of the link mechanism is hinged with the overwater wetland purification unit; the connecting rod mechanism is used for driving the overwater wetland purification unit to ascend relative to the base or driving the overwater wetland purification unit to descend relative to the base.

6. The constructed wetland system of claim 2, wherein the overwater wetland purification unit comprises a box body and light filler arranged in the box body, holes are formed in the top and the side wall of the box body for water inlet and outlet, and the light filler is used for biofilm culturing of microorganisms to purify sewage in the box body; typical wetland plants such as the yellow iris and the like are planted at the upper end of the box body.

7. The constructed wetland system of claim 6, wherein the number of the telescopic rods is two, the two telescopic rods are respectively arranged at two sides of the box body, and the other ends of the telescopic rods are hinged with the side wall of the box body.

8. The artificial wetland system of claim 1, which comprises a plurality of the above-water wetland purification units, wherein the above-water wetland purification units are connected in sequence; among all the above-water wetland purification units, the above-water wetland purification unit close to the base is respectively connected with the supporting table and the lifting mechanism.

9. The constructed wetland system of claim 1, further comprising a liquid level sensing system, wherein the liquid level flow rate sensing system is arranged on the upper surface of the aquatic wetland purification unit and is in communication connection with the lifting system, and the liquid level flow rate sensing system is used for detecting the submerging depth between the aquatic wetland purification unit and the water surface of the river channel and/or the water flow rate of the river channel and controlling the lifting system to enable the aquatic wetland purification unit to ascend or descend relative to the river channel based on the submerging depth and/or the water flow rate.

10. The constructed wetland system of claim 9, wherein when the submerging depth is more than 0.5m, the lifting system controls the overwater wetland purification unit to ascend by 0.5m so as to complete one control ascending action; after the control lifting action is executed for three times, the lifting system controls the overwater wetland purification unit to lift to a position where the bottom of the overwater wetland purification unit is higher than the water surface of the river channel and the distance between the bottom of the overwater wetland purification unit and the water surface is 0.1 m; when the liquid level and flow rate sensing system detects that the water level of the river is smaller than the highest water level threshold, the lifting system controls the water wetland purification unit to descend and be positioned in the river;

or when the water flow speed is more than 3m/s, the lifting system controls the overwater wetland purification unit to ascend to the position where the bottom of the overwater wetland purification unit is higher than the water surface of the river channel and the distance between the overwater wetland purification unit and the water surface is 0.1 m.

Background

The artificial wetland has the advantages of good sewage purification effect, low operation cost and the like, and has landscape effect, so the artificial wetland is widely popularized and used for treating polluted water bodies, and particularly has wide application in the field of purifying polluted surface water or low-pollution water.

However, the artificial wetland system occupies a large area, and the polluted water in the river is generally pumped into the wetland by using electric energy in the prior art, and is drained back to the river after being treated. This not only requires a large amount of land resources, but also consumes a lot of energy. If the artificial wetland is built in the river channel, the problem of land occupation of the wetland is solved, the energy consumption is reduced, and the low-energy-consumption in-situ treatment is expected to be realized. However, one of the main functions of the river is flood discharge, and if the wetland is directly built in the river, the flood discharge period will affect the river to perform the flood discharge function, and threaten the construction facilities around the river. In order to solve the problems, the inventor designs a river channel type artificial wetland which has the effect of purifying water quality when the wetland is positioned in river water in a non-flood discharge period; when flood discharge is needed, the wetland can be automatically lifted, and the flood discharge function of the riverway can be smoothly completed. The invention can effectively reduce the demand of the artificial wetland on land resources and simultaneously has good purification effect on polluted water bodies in the riverway.

Disclosure of Invention

In order to solve the above technical problem or at least partially solve the above technical problem, the present disclosure provides an artificial wetland system.

The utility model provides an artificial wetland system, artificial wetland system part is located in the river course, includes:

the base is fixed on the river bank of the river channel;

the supporting platform extends along the direction vertical to the base, and one end of the supporting platform is fixed on one side, far away from the river bank, of the base;

the overwater wetland purification unit is hinged to one end, away from the base, of the support table and is used for purifying sewage drained into the overwater wetland purification unit; and

the lifting mechanism is provided with one end which is arranged on one side of the base far away from the river channel, and the other end which is hinged with the water wetland purification unit and is used for driving the water wetland purification unit to ascend relative to the base when the river channel is flooded, so that the water wetland purification unit is positioned above river water of the river channel, and driving the water wetland purification unit to descend relative to the base when the river channel is not flooded, so that the water wetland purification unit is positioned in river water of the river channel.

According to an embodiment of the present disclosure, the lifting mechanism includes:

a drive section;

the energy supply part is in power connection with the driving part; and

the driving part is in transmission connection with the telescopic rod, one end of the telescopic rod is connected to the base, and the other end of the telescopic rod is hinged with the overwater wetland purification unit; the drive division is used for when energy supply portion provides power the drive the telescopic link extension is in order to drive wetland purification unit on water for the base rises, and the drive the telescopic link shrink in order to drive wetland purification unit on water for the base descends.

According to an embodiment of the present disclosure, the energy supply portion includes a solar panel, the solar panel is disposed on the base and electrically connected to the driving portion, and the solar panel is configured to supply power to the driving portion;

or the energy supply part comprises a water wheel, a hydroelectric generator and an electric energy storage device, the hydroelectric generator is connected with the water wheel, the hydroelectric generator is respectively electrically connected with the driving part and the electric energy storage device, the water wheel is arranged in river water of a river channel, and the hydroelectric generator is used for converting water energy generated by rotation of the water wheel into electric energy so as to supply power to the driving part; and the electrical energy storage device is used for storing the electrical energy;

or the energy supply part comprises a wind wheel, a wind driven generator and an electric energy storage device, the wind driven generator is connected with the wind wheel, the wind wheel is arranged on the base, and the wind driven generator is used for converting wind energy generated by rotation of the wind wheel into electric energy to supply power to the driving part; and the electrical energy storage device is used for storing the electrical energy.

According to an embodiment of the disclosure, the above-water wetland purification unit is rotatably connected with the upper end of the support platform through a rotating piece, so that the above-water wetland purification unit can be rotated to be above the river channel or above the river bank through the rotating piece; and the outer wall of the overwater wetland purification unit is wound with metal wires.

According to one embodiment of the disclosure, the lifting mechanism comprises a connecting rod mechanism, one end of the connecting rod mechanism is connected to the base, and the other end of the connecting rod mechanism is hinged with the overwater wetland purification unit; the connecting rod mechanism is used for driving the overwater wetland purification unit to ascend relative to the base or driving the overwater wetland purification unit to descend relative to the base.

According to one embodiment of the disclosure, the overwater wetland purification unit comprises a box body and light fillers arranged in the box body, holes are formed in the top and the side wall of the box body for water inlet and outlet, and the light fillers are used for hanging a film with microorganisms to purify sewage in the box body; typical wetland plants such as the yellow iris and the like are planted at the upper end of the box body.

According to an embodiment of the present disclosure, the number of the telescopic rods is two, the two telescopic rods are respectively arranged on two sides of the box body, and the other ends of the telescopic rods are hinged to the side wall of the box body.

According to one embodiment of the disclosure, the artificial wetland system comprises a plurality of the above-water wetland purification units, and the above-water wetland purification units are sequentially connected; among all the above-water wetland purification units, the above-water wetland purification unit close to the base is respectively connected with the supporting table and the lifting mechanism.

According to an embodiment of the present disclosure, the constructed wetland system further comprises a liquid level sensing system, the liquid level flow rate sensing system is arranged on the upper surface of the overwater wetland purification unit and is in communication connection with the lifting system, the liquid level flow rate sensing system is used for detecting the submerging depth between the overwater wetland purification unit and the water surface of the river channel and/or the water velocity of the river channel, and controlling the lifting system based on the submerging depth and/or the water velocity to enable the overwater wetland purification unit to ascend or descend relative to the river channel.

According to an embodiment of the disclosure, when the submerging depth is greater than 0.5m, the lifting system controls the overwater wetland purification unit to ascend by 0.5m so as to complete one control ascending action; after the control lifting action is executed for three times, the lifting system controls the overwater wetland purification unit to lift to a position where the bottom of the overwater wetland purification unit is higher than the water surface of the river channel and the distance between the bottom of the overwater wetland purification unit and the water surface is 0.1 m; when the liquid level and flow rate sensing system detects that the water level of the river is smaller than the highest water level threshold, the lifting system controls the water wetland purification unit to descend and be positioned in the river;

or when the water flow speed is more than 3m/s, the lifting system controls the overwater wetland purification unit to ascend to the position where the bottom of the overwater wetland purification unit is higher than the water surface of the river channel and the distance between the overwater wetland purification unit and the water surface is 0.1 m.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

the embodiment of the disclosure provides an artificial wetland system, which can be combined with a river channel, namely, the artificial wetland system is at least partially positioned in the river channel, so that land resources are saved. Specifically, this constructed wetland system includes base, a supporting bench, wetland purification unit and elevating system on water. Wherein, the base is fixed in on the river bank of river course, and the supporting bench extends along the direction of perpendicular to base, and the one end of brace table is fixed in one side that the river bank was kept away from to the base, and the wetland purification unit on water connects the one end that the river bank was kept away from at the brace table and is used for purifying the drainage to the sewage in the wetland purification unit on water to play the effect that constructed wetland system is used for purifying sewage. In addition, because the main function of the river is flood discharge, in order to avoid the problem that the river flood discharge is not smooth and the potential safety hazard around the river is possibly caused because the overwater wetland purification unit positioned in the river plays a role in interfering and hindering the flood discharge in the period of the flood discharge of the river, the lifting mechanism is arranged in the embodiment, one end of the lifting mechanism is arranged at one side of the base far away from the river channel, the other end is hinged with the overwater wetland purification unit, is used for driving the water wetland purification unit to ascend relative to the base when the river course discharges the flood, so that the water wetland purification unit is positioned above the river water of the river course to avoid the interference to the flood discharge of the river course, and driving the water wetland purification unit to descend relative to the base when the river channel is not flooded, so that the water wetland purification unit is positioned in the river water of the river channel, and performing sewage purification on the sewage drained into the water wetland purification unit.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a first structural schematic diagram of an artificial wetland system according to an embodiment of the disclosure;

fig. 2 is a schematic structural view of the outer wall of the overwater wetland purification unit of the constructed wetland system of the embodiment of the disclosure wound with metal wires;

fig. 3 is a second structural schematic diagram of the constructed wetland system of the embodiment of the disclosure;

fig. 4 is a third structural diagram of the constructed wetland system according to the embodiment of the disclosure;

fig. 5 is a schematic circuit control diagram of the constructed wetland system according to the embodiment of the disclosure.

Wherein, 1, a base; 2. a support table; 21. a positioning member; 3. an overwater wetland purification unit; 31. a box body; 311. a hole; 312. an inner cavity; 32. a metal wire; 33. a lightweight filler; 34. a partition plate; 4. a lifting mechanism; 41. a drive section; 42. an energy supply section; 43. a telescopic rod; 44. a link mechanism; 5. and a rotating member.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

The utility model provides an artificial wetland system, thereby this artificial wetland system part is located in the river course and is combined together with the river course space and form river course artificial wetland system to save land resource.

As shown in fig. 1 and 2, the constructed wetland system of the embodiment of the present disclosure includes a base 1, a support platform 2, an aquatic wetland purification unit 3, and a lifting mechanism 4, wherein the base 1 is disposed on the river bank of the river channel to play a role of supporting or fixing other components of the constructed wetland system, one end of the support platform 2 is connected with the base 1, and the other end is hinged to the aquatic wetland purification unit 3 for supporting the aquatic wetland purification unit 3. Elevating system 4's one end is connected with base 1, the other end is used for articulating with wetland purification unit 3 on water, a flood season for driving wetland purification unit 3 on water to rise or descend in order to adapt to the river course, when the river course is in flood season and need carry out the flood discharge promptly, thereby can drive wetland purification unit 3 on water through elevating system 4 and rise for base 1 and make wetland purification unit 3 on water be in the top of river course, promptly in the river course, thereby wetland purification unit 3 on water causes the influence to the flood discharge of river course when avoiding the river course flood discharge, and when the river course is not in the flood discharge period, then can be in the river course for the wetland purification unit 3 decline makes wetland purification unit 3 on water be in the river course for base 1 through elevating system 4 drive wetland purification unit 3 on water, and then purify the sewage that enters into wetland purification unit 3 on water.

Therefore, it can be understood that the base 1 is arranged on the river bank, and the water wetland purification unit 3 can sink into the river water of the river channel after falling to a certain degree, therefore, the projection of the water wetland purification unit 3 on the river channel coincides with the river channel, that is to say, no matter the water wetland purification unit 3 rises or falls to any position relative to the base 1, the water wetland purification unit 3 is always located in the upper space of the river channel or the river water of the river channel, therefore, the artificial wetland system of the present disclosure is partially located in the river channel, the part at this point means that the base 1 is located on the river bank of the river channel, the support platform 2 can be completely located on the river bank, also can be partially located on the river bank and partially located in the river channel, and the water wetland purification unit 3 is completely located above the river channel or in the river channel.

As shown in fig. 1 and 2, the base 1 in this embodiment may be a square base or a circular base, one end of the base 1 may be fixed on the bank of the river channel by a fixing member, for example, a screw, and the other end serves as a connecting end for connecting other components of the artificial wetland system, that is, the upper end of the base 1 is connected with other components of the artificial wetland system. The base 1 may be a solid structure made of metal, alloy or the like or an internally cement-cast hollow structure made of metal, alloy or the like to increase the weight of the base 1 and thereby ensure the support stability of the base to other components.

As shown in fig. 1 and 2, the supporting platform 2 extends in a direction perpendicular to the base 1, that is, the supporting platform 2 is disposed in a direction in which the length extending direction is perpendicular to the plane of the base 1, in other embodiments, the extending direction of the supporting platform 2 and the length extending direction of the base 1 may be disposed at a certain acute angle, one end of the supporting platform 2 is fixed to the side of the base 1 away from the river bank, that is, one end of the supporting platform 2 is connected and fixed to the upper end of the base 1, and the specific connection manner may be fastener connection or welding fixation.

The shape of the support base 2 may be, for example, a square shape or an L shape, a solid structure to increase the strength thereof, or a hollow structure to reduce the weight thereof. One end of the supporting table 2 is connected with the base 1, for example, the supporting table 2 is connected with a fastener or welded or integrally formed, and the other end of the supporting table 2 can be hinged to the overwater wetland purification unit 3 or rotationally connected with the overwater wetland purification unit through a rotating shaft or the like, so that the lifting mechanism 4 can drive the overwater wetland purification unit 3 to rotate relative to the supporting table 2, and then the overwater wetland purification unit can ascend or descend relative to the base 1.

In the embodiment of the present disclosure, the specific structure or process of the water wetland purification unit 3 ascending or descending relative to the base 2 may be as follows: elevating system 4 itself can have electronic elasticity, and because wetland purification unit 3 on water both had articulated with elevating system 4 and still articulated with the one end of brace table 2 to make elevating system 4 drive wetland purification unit 3 on water when extension rotate the slope upwards for base 1 or brace table 2 and realize the purpose of rising, and in the same way, then drive wetland purification unit 3 on water when elevating system 4 contracts and rotate the slope downwards for base 1 or brace table 2 and realize the purpose of descending.

In addition, a plurality of limiting holes are formed in the side wall of the overwater wetland purification unit 3 along the extending direction of the side wall, one end of the limiting piece 21 is fixedly connected with the support platform 2, and the other end of the limiting piece 21 can be arranged in different limiting holes, so that when the lifting mechanism 4 drives the overwater wetland purification unit 3 to ascend or descend to any position, the limiting piece 21 is arranged in different limiting holes to fix the overwater wetland purification unit 3 to be stably positioned at a preset height.

As shown in fig. 1, 2, and 5, the specific structure of the lifting mechanism 4 is: the lifting mechanism 4 includes a driving unit 41, an energy supplying unit 42 electrically connected to the driving unit 41, and a telescopic rod 43 power-connected to the driving unit 41. One end of the telescopic rod 43 is connected with the base 1, and the other end is hinged with the overwater wetland purification unit 3, so that when the energy supply part 42 provides power support for the driving part 41, the driving part 41 starts and drives the telescopic rod 43 to extend to realize the ascending operation of the overwater wetland purification unit 3 or drives the telescopic rod 43 to contract to realize the descending operation of the overwater wetland purification unit 3.

The telescopic rod 43 may be a plurality of electric rods sequentially sleeved, and the length and number of the electric rods determine the longest length of the electric rods during extension and the shortest length of the electric rods during contraction, thereby determining the elevation or the descent height of the aquatic wetland purification unit 3. Therefore, the length and the number of the electric rods are determined according to the height of the overwater wetland purification unit 3 which needs to be raised or lowered.

As shown in fig. 3, the water wetland purification unit 3 is rotatably connected to the upper end of the support base 2 by a rotating member 5, so that the water wetland purification unit 3 can be rotated by the rotating member 5 to be positioned above the river or above the river bank. For example, during a non-flood discharge period, the water wetland purification unit 3 can be lowered relative to the base 1 and positioned in the river by rotating the rotating member 5 in the lower right direction as shown in fig. 4, whereas during a flood discharge period, the water wetland purification unit 3 can be raised relative to the base 1 and positioned above the river bank to avoid affecting the flood discharge by rotating the rotating member 5 in the upper left direction as shown in fig. 4. The rotating member 5 may be a rotating shaft or a rotating hinge as shown in fig. 3.

In addition, as shown in fig. 4, in addition to the lifting of the water wetland purification unit 3 upward or the lowering of the water wetland purification unit 3 by the driving of the driving part 41 by the telescopic rod 43, a link mechanism 44 may be used, and the lifting of the water wetland purification unit 3 or the lowering of the water wetland purification unit 3 may be realized by the link mechanism 44, for example, by a plurality of links connected in sequence, by the hinge rotation between the links.

As shown in fig. 1 and 4, a plurality of limiting holes (not shown) are formed in the side wall of the water wetland purification unit 3 along the longitudinal extension direction (for example, the left-right direction in fig. 1 and 4), one end of each limiting member 21 is fixedly connected to the support base 2, and the other end of each limiting member can be disposed in a different limiting hole, so that the water wetland purification unit 3 can be stably fixed at a predetermined height by disposing the limiting members 21 in different limiting holes when the lifting mechanism 4 drives the water wetland purification unit 3 to ascend or descend to an arbitrary position, and in the embodiment shown in fig. 3, the limiting members 21 are omitted, and reference is made to the limiting members 21 in fig. 1 and 4.

As to the structure of the energy supply unit 42 or the energy supply manner thereof, in an embodiment, the energy supply unit 42 may be a storage battery or an external power source, and the driving unit 41 is electrically connected to the storage battery or the external power source through an electrical interface provided on the driving unit 41 to realize energy supply.

In another embodiment, the energy supplying unit 42 includes a solar panel, the solar panel is disposed on the base 1 and electrically connected to the driving unit 41, the solar panel is used for supplying power to the driving unit 41, the solar panel can directly convert the heat radiation of the sun into electric energy to supply power to the driving unit 41, the driving unit 41 drives the water wetland purifying unit 3 to ascend or descend relative to the base 1 under the power supply of the solar panel, and the solar panel is used for supplying power to the driving unit 41, so that energy can be saved and energy pollution can be reduced.

In another embodiment, the energy supplying part 42 includes a water wheel, a hydroelectric generator connected to the water wheel, and an electric energy storage device, the hydroelectric generator is electrically connected to the driving part 41, the water wheel is disposed in the river water of the river channel to form water energy by water flow, the hydroelectric generator is used for converting the water energy generated by the rotation of the water wheel into electric energy to supply power to the driving part 41, the driving part 41 drives the water wetland purifying unit 3 to ascend or descend relative to the base 1 under the power supply of the hydroelectric generator, and the flow of the river water in the river channel can be fully utilized and converted into electric energy by supplying power to the driving part 41 by the hydroelectric generator to save energy and reduce energy pollution. The electrical energy storage device is also used to store electrical energy generated by the hydro-generator.

In another embodiment, the energy supplying unit 42 includes a wind wheel, a wind power generator connected to the water wheel, and an electric energy storage device, the wind power generator is electrically connected to the driving unit 41, the wind wheel is disposed on the base 1 to form wind energy by wind current, the wind power generator is configured to convert the wind energy generated by the rotation of the wind wheel into electric energy to supply power to the driving unit 41, the driving unit 41 drives the overwater wetland purifying unit 3 to ascend or descend relative to the base 1 under the power supply of the wind power generator, and the wind power generator is used to supply power to the driving unit 41 to fully utilize the flow of the wind and convert the wind energy into electric energy to save energy and reduce energy pollution. The electric energy storage device is also used for storing the electric energy generated by the wind driven generator.

As shown in fig. 2, the aquatic wetland purifying unit 3 comprises a box 31 and a light filler 33 arranged in the box 31, wherein the box 31 can form an inner cavity for holding sewage for purification. Holes are formed in the top and the side wall of the box body 31 and used for water inlet and water outlet, and the light filler 33 is used for microbial biofilm formation and purifying sewage in the box body 31; typical wetland plants such as the yellow iris and the like are planted at the upper end of the box body 31. And the particle diameter of the light filler 33 is larger than the aperture of the hole formed on the side wall of the box body 31, so that the light filler 33 can be prevented from flowing out. The box body 31 is used as a main body of the overwater wetland purification unit 3, and wetland plants such as the yellow iris and the like are planted on the box body, so that a certain purification effect is achieved on water quality, and meanwhile, a landscape effect is achieved. And the length, width and height of the overwater wetland purification unit 3 are selected according to the size of a river channel, and the height is recommended to be not less than 0.5m and not more than 1.3 m.

Specifically, the top and the side wall of the box 31 are provided with holes 311 for introducing sewage into the inner cavity 312 of the box 31 through the holes 311 or for discharging purified water from the holes, and the light packing 33 is arranged in the box 31 for purifying sewage in the box 31. The filler made of light materials can facilitate the lifting or descending of the overwater wetland purification unit 3 relative to the base 1 under the driving of the lifting mechanism 4. In addition, in order to avoid a large amount of silt in the river channel, waste such as plastics enters into the overwater wetland purification unit 3, so that the overwater wetland purification unit 3 is blocked, a screen can be arranged at the hole 311, the aperture of the screen is set to be smaller than the particle size of the silt, and therefore the silt or other waste can be effectively prevented from entering the overwater wetland purification unit 3 to cause the blockage.

In addition, still be provided with crisscross baffle 34 that sets up in box body 31 for form the water conservancy diversion passageway in box body 31, with the circulation distance of increase rivers in box body 31, thereby make rivers fully contact with the light filler 33 that sets up in the box body 31, so that light filler 33 purifies rivers, thereby improve purifying effect.

In addition, the outer wall of the water wetland purification unit 3 is also wound with a metal wire 32 for fixing the box body 31 of the water wetland purification unit 3. The wire 32 may be, for example, a steel wire, or the like.

In order to make the ascending or descending of the overwater wetland purification unit 3 driven by the lifting mechanism 4 more stable, in this embodiment, the lifting mechanism 4 may include two lifting mechanisms 4, and the two lifting mechanisms 4 are respectively arranged on two opposite sides of the overwater wetland purification unit 3. As shown in fig. 1 and 2, the lifting mechanism 4 has two telescopic rods 43, the two telescopic rods 43 are respectively disposed at two sides of the box body 31, and the other end of the telescopic rod 43 is hinged to the side wall of the box body 31 for driving the box body 31 to ascend or descend relative to the base 1. In addition, the other end of the telescopic rod 43 can be hinged with the bottom of the box body 31. The specific hinge position of the telescopic bar 43 and the box 31 may not be limited to the above example.

In addition, in order to improve the sewage purification efficiency, in the present embodiment, as shown in fig. 1, 2, and 3, the artificial wetland system includes a plurality of water wetland purification units 3, and the plurality of water wetland purification units 3 may be connected in sequence by iron wires; since one end of the water wetland purification unit 3 is connected with the support platform 2, the support platform 2 is connected with one end of the base 1, and the base 1 is arranged on the river bank, in all the water wetland purification units 3, the water wetland purification unit 3 close to the base 1 is respectively connected with the support platform 2 and the lifting mechanism 4, illustratively, as shown in fig. 1, the side wall of the leftmost water wetland purification unit 3 or the leftmost water wetland purification unit 3 is hinged with the telescopic rod 43 of the lifting mechanism 4, and the left side of the leftmost water wetland purification unit 3 is hinged with one end of the support platform 2. The plurality of water wetland purification units 3 may be configured to have the same structure and size, or the plurality of water wetland purification units 3 may have different size specifications according to actual needs.

Further, constructed wetland system still includes liquid level induction system, and liquid level velocity of flow induction system locates the upper surface of wetland purification unit 3 on water and with 4 communication connection of operating system, and liquid level velocity of flow induction system is used for detecting the depth of submerging between wetland purification unit 3 on water and the surface of water in river course and/or the velocity of water in river course to control operating system 4 and make wetland purification unit 3 on water rise or descend for the river course based on the depth of submerging and/or velocity of water.

Specifically, when the submerging depth is more than 0.5m, the lifting system 4 controls the overwater wetland purification unit 3 to ascend by 0.5m so as to complete one control ascending action; and after controlling the ascending action to be executed for three times, the lifting system 4 controls the overwater wetland purification unit 3 to ascend until the bottom of the overwater wetland purification unit is higher than the water surface of the river channel and the distance between the overwater wetland purification unit and the water surface is 0.1 m; that is, when the river water level submerges the upper end of the overwater wetland purification unit 3 to 0.5m depth, the liquid level and flow rate sensing system automatically starts the lifting system 4 to lift the overwater wetland purification unit by 0.5 m; when the overwater wetland purification unit 3 is submerged for 0.5m again, the liquid level and flow velocity induction system rises for 0.5m again; when the water wetland purification unit 3 is submerged for 0.5m for the third time, the liquid level and flow velocity sensing system is started to lift the water wetland purification unit 3 to the maximum height, and the lower end of the water wetland purification unit 3 is 0.1m higher than the river bank. After flood discharge is completed, or when the liquid level and flow rate sensing system detects that the water level of the river is smaller than the highest water level threshold value, or after 5 hours of raining, the overwater wetland purification unit 3 is controlled to descend and be positioned in the river.

Or when the water velocity is greater than 3m/s or when it rains, on the one hand in order not to influence flood discharge, on the other hand, to avoid too much sand and the like from entering the overwater wetland purification unit 3 to cause blockage, the lifting system 4 is started to enable the overwater wetland purification unit 3 to rise to a position where the bottom of the overwater wetland purification unit is higher than the water surface of the river channel and the distance between the overwater wetland purification unit and the water surface is 0.1m, when the water level reaches the designed water level height, the warning is indicated to be relieved, the flood discharge function is completed, and the lifting system 4 controls the overwater wetland purification unit 3 to automatically return to the original position.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.