Drainage pipeline type constructed wetland

Abstract

The utility model relates to the technical field of constructed wetland structures, in particular to a drainage pipeline type constructed wetland. Comprising a pipeline, a packing layer, a planting layer and a baffling structure, the pipeline is of a water conveying structure which is horizontally arranged, water enters one side of the water conveying structure, water exits the other side of the water conveying structure, and a plurality of planting holes which are formed at intervals in the flowing direction in the pipeline are formed in the upper side pipe wall of the pipeline; the filler layer is a purification filler structure which is filled in the pipeline and can adsorb pollutants in water flow; the planting layer comprises wetland plants which penetrate through the planting holes and are planted on the filler layer in the pipeline; the baffling structure is arranged in the pipeline and used for delaying the water flow velocity in the pipeline. According to the drainage pipeline type constructed wetland suitable for water quality purification, the drainage pipeline and the constructed wetland technology are combined, the dual functions of water delivery and water quality purification are achieved at the same time, the water quality purification capacity is good, and engineering land can be effectively saved.

Description

Technical Field

[0001] This utility model relates to the field of constructed wetland structure technology, specifically to a drainage pipe type constructed wetland. Background Technology

[0002] Constructed wetland technology is widely used for water purification of sewage, sewage treatment plant effluent, and river and lake water due to its advantages such as high treatment capacity, good ecological performance, and low operating costs. For example, a prior art technology entitled "Controllable Periodic Two-End Alternating Inlet Subsurface Flow Constructed Wetland Sewage Treatment System and its Treatment Process" proposes a constructed wetland structure including a wetland inlet water distribution area, a wetland main body, and a wetland effluent collection area. The wetland inlet water distribution area and the wetland effluent collection area are located at opposite ends of the system, forming a symmetrical structure. The wetland main body is located between the wetland inlet water distribution area and the wetland effluent collection area. One end of the wetland inlet water distribution area and the wetland effluent collection area is a wall, and the other end, between the wetland main body and the wall, is provided with a porous water distribution wall. The artificial wetland structure features a uniformly porous structure on the water distribution wall. Water inlet pipes are embedded in the upper part of the side walls of the wetland inlet and outlet water collection areas, each equipped with an inlet valve control device. Two or more rows of outlet pipes are embedded in the wall below the inlet pipes, arranged horizontally between them. Drainage pipes are embedded at the bottom of the side walls of the wetland inlet and outlet water collection areas. The main body of the wetland includes economic plants and wetland substrate filler, with the substrate filler located at the bottom of the main body and economic plants planted on top of it. This artificial wetland structure incorporates porous water distribution walls between the wetland inlet and outlet water collection areas and the main wetland structure. The porous water distribution walls at the inlet end allow wastewater to enter the wetland structure evenly, while the porous water distribution walls at the outlet end allow the plants at the end of the wetland to fully absorb pollutants in the water before the wastewater flows out of the wetland. This achieves a good wastewater treatment effect.

[0003] However, this type of constructed wetland structure also has many problems. It requires a large land area, consuming a significant amount of land, forcing many projects to use alternative technologies due to insufficient land. Currently, many water treatment projects require long-distance water transport, resulting in a large amount of space within the pipelines. Conventional pipelines only have water transport functions and lack water purification capabilities, leading to a significant waste of pipeline space. Utility Model Content

[0004] The purpose of this application is to address the shortcomings of the aforementioned background technology and provide a drainage pipe type artificial wetland.

[0005] The technical solution of this application is: a drainage pipe type constructed wetland, comprising,

[0006] The pipe is a water conveyance structure arranged horizontally with water entering from one side and exiting from the other side. Multiple planting holes are provided on the upper wall of the pipe, arranged at intervals along the flow direction inside the pipe.

[0007] The packing layer is a purification packing structure filled inside the pipe that can adsorb pollutants in the water flow;

[0008] A planting layer comprising wetland plants planted in a filler layer within a pipe through planting holes;

[0009] A flow deflector structure is installed inside the pipe to slow down the flow velocity of water within the pipe.

[0010] According to the present application, a drainage pipe type artificial wetland includes an upper baffle plate and a lower baffle plate arranged alternately along the flow direction inside the pipe; the upper baffle plate is a plate-shaped structure with its upper end fixed to the upper side of the inner wall of the pipe and its lower end having a flow gap with the lower side of the inner wall of the pipe; the lower baffle plate is a plate-shaped structure with its lower end fixed to the lower side of the inner wall of the pipe and its upper end having a flow gap with the upper side of the inner wall of the pipe.

[0011] According to the present application, a drainage pipe type constructed wetland includes an upper flow limit plate and a lower flow limit plate arranged alternately along the flow direction inside the pipe; the upper flow limit plate is a plate-shaped structure fixed to the inner wall of the pipe, and the upper half of the upper flow limit plate is uniformly provided with a plurality of flow passage holes; the lower flow limit plate is a plate-shaped structure fixed to the inner wall of the pipe, and the lower half of the lower flow limit plate is uniformly provided with a plurality of flow passage holes.

[0012] According to the present application, a drainage pipe type artificial wetland also includes a flow guiding structure, which is a structure disposed in the filler layer and is used to open when the water flow resistance in the pipe is too high in order to improve the water flow capacity of the pipe.

[0013] According to the present application, a drainage pipe type artificial wetland is provided, wherein the flow guiding structure includes a flow channel; the flow channel is an inclined and bent channel opened in the filler layer, wherein the upper end of the flow channel located between the adjacent upper and lower baffles is located in the flow gap between the lower baffle and the upper side of the inner wall of the pipe, and the lower end is located in the flow gap between the upper baffle and the lower side of the inner wall of the pipe.

[0014] According to the present application, a drainage pipe type artificial wetland is provided, wherein the filler layer includes a plurality of cylindrical sponge modules filled in the pipe; the sponge modules are located between adjacent upper and lower baffles.

[0015] According to the present application, in a drainage pipe type artificial wetland, the diameter of the flow channel is 1 / 5 to 1 / 4 of the diameter of the sponge module.

[0016] According to the drainage pipe type artificial wetland provided in this application, the sponge module is provided with a downwardly recessed planting pit at the position corresponding to the planting hole.

[0017] According to the present application, a drainage pipe type artificial wetland is provided, wherein the wetland plants are one or more of reeds, irises, calamus, and pickerelweed.

[0018] The advantages of this application are: 1. This application sets a filling layer inside the pipe, sets a planting layer on the filling layer, and uses the baffle structure inside the pipe to slow down the flow rate, so that the water can flow slowly inside the pipe and be adsorbed and purified by the filling layer and the planting layer. It is suitable for drainage pipe type artificial wetland for water purification. It combines drainage pipe and artificial wetland technology, and has the dual functions of water conveyance and water purification. It not only has good water purification ability, but also effectively saves engineering land.

[0019] 2. The baffle structure of this application includes an upper baffle plate and a lower baffle plate arranged at intervals, which can play a guiding role, so that the incoming water can flow evenly up and down in the pipe, avoid short-circuiting, and improve the water purification effect; in addition, the upper baffle plate and the lower baffle plate can also play a role in fixing the packing, effectively preventing the packing from sliding when the pipe slope is large.

[0020] 3. This application also provides another type of baffle structure, which has a better fixing effect on the packing layer, can slow down the flow velocity in the pipe, and can enable the packing layer and planting layer to more fully adsorb pollutants in the water, thereby enhancing the purification effect.

[0021] 4. In order to avoid the flow rate being too slow, especially when the packing layer may be blocked, this application adds a flow guiding structure. The flow guiding structure can effectively guide the water flow in the pipe, thereby increasing the water flow rate in the pipe, enhancing the water flow capacity, ensuring the water flow capacity of the pipe itself, and avoiding the loss of the pipe's drainage function due to excessive water resistance.

[0022] 5. The structure of the flow channel in this application is very simple. By setting an inclined channel structure in the packing layer, the water flow capacity in the pipe can be increased, and the drainage function of the pipe can be avoided due to excessive water resistance. The inclined flow channel itself also has a certain baffle function, so that the water flow is not too large and the purification and adsorption effect is completely eliminated.

[0023] 6. This application includes a sponge module in the filler layer. The sponge module itself is made of soft material, has good adsorption, is easy to install, simple to remove and place, and is inexpensive.

[0024] 7. This application opens a flow channel inside the sponge module, which on the one hand forms a channel structure to increase the water flow capacity, and on the other hand forms a hole inside the sponge module to facilitate the placement of the sponge module inside the pipe.

[0025] 8. This application provides planting pits on the sponge module to facilitate the arrangement of the planting layer;

[0026] 9. The wetland plants in this application are conventional plants, which are easy to obtain, have a high survival rate, and have excellent purification and adsorption effects.

[0027] This application is for a drainage pipe type constructed wetland suitable for water purification. By combining drainage pipes with constructed wetland technology, it has both water conveyance and water purification functions. It not only has good water purification capabilities, but also effectively saves land for the project. Attached Figure Description

[0028] Figure 1 : Top view of the constructed wetland structure in this application;

[0029] Figure 2 : A cross-sectional view of the constructed wetland structure in this application;

[0030] Figure 3 : A schematic diagram of the cross-section of the sponge module in this application;

[0031] Figure 4 : A schematic cross-sectional view of the sponge module in this application (from another view);

[0032] Wherein: 1—pipe; 2—filler layer; 3—planting layer; 4—upper baffle; 5—lower baffle; 6—flow channel; 7—planting pit. Detailed Implementation

[0033] The embodiments of this application are described in detail below, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0034] In the description of this application, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "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.

[0035] 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 at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0037] This application relates to a drainage pipe type constructed wetland. The constructed wetland structure of this application is built based on drainage pipes. By setting up a filler layer and a planting layer on the original drainage pipe structure, the filler layer and the planting layer are used to purify and adsorb the water in the drainage pipe. Through this structure and method, the dual functions of water conveyance and water purification are achieved. It can not only effectively purify water quality, but also save a lot of engineering land because it does not require a large amount of land like conventional constructed wetlands, but only uses the existing drainage pipe structure.

[0038] Specifically, such as Figures 1-4 As shown, a drainage pipe type constructed wetland includes a pipe 1, a filler layer 2, a planting layer 3, and a baffle structure. The pipe 1 is a pre-installed drainage pipe, a water conveyance structure arranged horizontally with water entering from one side and exiting from the other. Multiple planting holes are spaced along the flow direction within the pipe 1 on its upper wall to facilitate planting in the planting layer 3. The filler layer 2 is a purification filler structure filled within the pipe 1 that adsorbs pollutants in the water flow. The planting layer 3 includes wetland plants planted on the filler layer 2 within the pipe 1 through the planting holes. The wetland plants are one or more of reeds, irises, calamus, and pickerelweed. The baffle structure is installed within the pipe 1 to slow down the water flow velocity within the pipe 1.

[0039] Pipe 1 is filled with a filler layer 2, and a planting layer 3 is planted on top of the filler layer 2. The filler layer 2 and the planting layer 3 are used to adsorb and purify the water flow in pipe 1, greatly improving the purification effect. The filler layer 2 itself has a delaying effect on the water flow in pipe 1. In order to further increase the residence time of the water flow in pipe 1 and improve the adsorption and purification effect, this application sets a baffle structure in the pipe. The baffle structure increases the flow distance of the water flow in the pipe, prolongs the residence time of the water flow, and enhances the adsorption and purification effect of the filler layer 2 and the planting layer 3.

[0040] In some embodiments of this application, the above-mentioned flow deflection structure has been optimized. The flow deflection structure of this embodiment includes an upper flow deflector 4 and a lower flow deflector 5 arranged alternately along the flow direction inside the pipe 1. The upper flow deflector 4 is a plate-shaped structure with its upper end fixed to the upper side of the inner wall of the pipe 1 and its lower end having a flow gap with the lower side of the inner wall of the pipe 1. The lower flow deflector 5 is a plate-shaped structure with its lower end fixed to the lower side of the inner wall of the pipe 1 and its upper end having a flow gap with the upper side of the inner wall of the pipe 1.

[0041] In this embodiment, the water flow path in the pipe 1 is converted into a bent structure by the upper baffle 4 and the lower baffle 5. The water flows through the flow gap below the upper baffle 4 and enters the packing layer 2 between the upper baffle 4 and the lower baffle 5. After passing through the packing layer 2, it passes through the flow gap at the upper end of the adjacent lower baffle 5 and enters the next section of the packing layer 2. This process continues until the water flows out of the pipe 1.

[0042] The upper baffle 4 and the lower baffle 5 extend the path of the water flow in the pipe 1, thus prolonging the residence time of the water flow in the pipe 1 and enhancing the purification and adsorption effect of the packing layer 2 and the planting layer 3 on the water flow in the pipe.

[0043] In other embodiments of this application, the filler layer 2 described above has been optimized, specifically, as follows: Figure 2 As shown, the packing layer 2 in this embodiment includes multiple cylindrical sponge modules filled in the pipe 1, with the sponge modules located between adjacent upper baffle 4 and lower baffle 5.

[0044] like Figures 3-4 As shown, the sponge module in this embodiment is a cylindrical structure that is tightly filled inside the pipe 1, with its outer circumference tightly attached to the inner wall of the pipe 1. Multiple sponge modules are arranged along the water flow direction. The two ends of each sponge module are tightly attached to the upper baffle 4 and the lower baffle 5, respectively.

[0045] The sponge module in this embodiment is a lightweight planting sponge. The sponge module has excellent adsorption properties, effectively adsorbing impurities and pollutants in the water flowing through it. Simultaneously, the sponge module also slows down the water flow within pipe 1.

[0046] The sponge module is made of a material with good compressibility. During installation, it is directly inserted into the pipe 1 through the planting hole. If blockage occurs and cleaning or replacement is needed, it can be directly removed through the planting hole. The sponge module has a downwardly recessed planting pit 7 at the corresponding planting hole position to facilitate the planting of the planting layer 3.

[0047] In a further embodiment of this application, a flow guiding structure is provided inside the pipe. The flow guiding structure is a structure provided inside the packing layer 2 and is used to open when the water flow resistance in the pipe 1 is too high in order to improve the water flow capacity of the pipe 1.

[0048] In fact, the flow guiding structure in this embodiment is set inside the sponge module. When the channel 1 needs to increase its water flow capacity, and the sponge module used for a long time is clogged, the flow guiding structure can be opened to guide the water flow in the pipe 1. The water flow through the flow guiding structure can quickly pass through the pipe 1 without being blocked by the sponge module, thus achieving the effect of enhancing the water flow capacity.

[0049] Specifically, such as Figure 2 As shown, the flow guiding structure of this embodiment includes a flow channel 6, which is an inclined and bent channel opened in the packing layer 2. The upper end of the flow channel 6, which is located between the lower baffle 5 and the upper side of the inner wall of the pipe 1, is located in the flow gap between the upper baffle 4 and the lower baffle 5, and the lower end is located in the flow gap between the upper baffle 4 and the lower side of the inner wall of the pipe 1.

[0050] The flow channel 6 forms a bent channel structure. The flow channels 6 inside adjacent sponge modules are interconnected, forming a bent flow channel structure. This bent structure of the flow channel 6 can also extend the flow path of the water. The direction of the flow channel 6 is intersecting the direction of the pipe 1. After the flow channel 6 is opened, some of the water in the flow channel 6 will still enter the sponge module for adsorption.

[0051] The flow passage 6 is connected at the flow gap between the upper baffle 4 and the lower baffle 5. The flow passage 6 itself does not interfere with the upper baffle 4 and the lower baffle 5, and the water can flow easily through the flow passage 6.

[0052] In this embodiment, the diameter of the flow channel 6 is 1 / 5 to 1 / 4 of the diameter of the sponge module, which ensures the water flow capacity of the pipe itself and avoids the loss of the pipe's drainage function due to excessive water resistance. At the same time, it improves the compressibility of the sponge module and facilitates the filling and removal of the sponge module.

[0053] In some other embodiments of this application, the above-mentioned flow deflection structure is optimized to provide another flow deflection structure. The specific flow deflection structure includes an upper flow deflection plate and a lower flow deflection plate arranged alternately along the flow direction inside the pipe 1. The upper flow deflection plate is a plate-shaped structure fixed to the inner wall of the pipe 1. The upper half of the upper flow deflection plate is uniformly provided with multiple flow passage holes. The lower flow deflection plate is a plate-shaped structure fixed to the inner wall of the pipe 1. The lower half of the lower flow deflection plate is uniformly provided with multiple flow passage holes.

[0054] In actual use, the drainage pipe type artificial wetland of this application allows water to enter the pipe 1 from one side. It first passes through the sponge module of the filler layer 2, and the sponge module and the planting layer 3 planted on the sponge module adsorb impurities and pollutants in the water. The water then passes through the flow gap below the upper baffle 4 and enters the filler layer 2 between the upper baffle 4 and the lower baffle 5. After passing through the filler layer 2, it passes through the flow gap at the upper end of the adjacent lower baffle 5 and enters the next section of the filler layer 2. This process continues until the water flows out of the pipe 1.

[0055] When it is necessary to increase the water flow capacity, the flow passage 6 in pipe 1 can be opened (which can be controlled by a valve structure on one side of pipe 1). Some water will flow through the flow passage 6 until it flows out from the flow passage 6 on the other side.

[0056] The direction of water flow in the pipeline in this application is as follows: Figure 2 The left and right directions in the middle.

[0057] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this application. Various changes and modifications can be made to this application without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of this application as claimed. The scope of protection of this application is defined by the appended claims and their equivalents.

Claims

1. A type of constructed wetland with drainage pipes, characterized in that: include, Pipe (1), the pipe (1) is a water conveying structure with water entering from one side and exiting from the other side arranged horizontally, and multiple planting holes are provided on the upper wall of the pipe (1) at intervals along the flow direction inside the pipe (1); The packing layer (2) is a purification packing structure that is filled in the pipe (1) and can adsorb pollutants in the water flow; The planting layer (3) includes wetland plants planted in the filler layer (2) inside the pipe (1) through the planting holes; A flow deflector structure is provided inside the pipe (1) to slow down the flow velocity of water inside the pipe (1).

2. A subsurface flow constructed wetland of the type defined in claim 1, characterised in that: The flow deflector structure includes an upper deflector plate (4) and a lower deflector plate (5) arranged alternately along the flow direction inside the pipe (1); the upper deflector plate (4) is a plate-shaped structure with its upper end fixed to the upper side of the inner wall of the pipe (1) and its lower end having a flow gap with the lower side of the inner wall of the pipe (1); the lower deflector plate (5) is a plate-shaped structure with its lower end fixed to the lower side of the inner wall of the pipe (1) and its upper end having a flow gap with the upper side of the inner wall of the pipe (1).

3. A subsurface flow constructed wetland of the type described in claim 1, characterized in that: The flow-blocking structure includes an upper flow plate and a lower flow-limiting plate arranged alternately along the flow direction inside the pipe (1); the upper flow plate is a plate-shaped structure fixed to the inner wall of the pipe (1), and the upper half of the upper flow plate is uniformly provided with multiple flow holes; the lower flow-limiting plate is a plate-shaped structure fixed to the inner wall of the pipe (1), and the lower half of the lower flow-limiting plate is uniformly provided with multiple flow holes.

4. A subsurface flow constructed wetland of the type described in claim 2, characterized in that: It also includes a flow guiding structure, which is a structure set in the packing layer (2) to open when the water flow resistance in the pipe (1) is too high, so as to improve the water flow capacity of the pipe (1).

5. A subsurface flow constructed wetland of the type described in claim 4, characterised in that: The flow guiding structure includes a flow channel (6); the flow channel (6) is an inclined and bent channel opened in the packing layer (2). The upper end of the flow channel (6) located between the adjacent upper baffle (4) and lower baffle (5) is located in the flow gap between the lower baffle (5) and the upper side of the inner wall of the pipe (1), and the lower end is located in the flow gap between the upper baffle (4) and the lower side of the inner wall of the pipe (1).

6. A drain pipe type constructed wetland according to claim 5, characterised in that: The filler layer (2) includes multiple cylindrical sponge modules filled in the pipe (1); the sponge modules are located between adjacent upper baffles (4) and lower baffles (5).

7. A subsurface flow constructed wetland of the type described in claim 6, characterised in that: The diameter of the flow channel (6) is 1 / 5 to 1 / 4 of the diameter of the sponge module.

8. A subsurface flow constructed wetland of the type described in claim 6, characterized in that: The sponge module has a downwardly recessed planting pit (7) at the position corresponding to the planting hole.

9. A subsurface flow constructed wetland of the type defined in claim 1, characterized in that: The wetland plants are one or more of the following: reed, iris, calamus, and pickerelweed.

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