Permeable reaction wall body structure for underground water treatment

Abstract

The utility model discloses an osmotic reaction wall body structure for groundwater treatment, and relates to the technical field of groundwater pollution treatment, the osmotic reaction wall body structure comprises a hollow intercepting wall, an upstream flow guide assembly and an osmotic filtering assembly, the upstream flow guide assembly comprises a plurality of transmission cavity structures, each transmission cavity structure comprises a transmission frame, and a transmission plate is arranged in each transmission frame; the first permeation filtering layer is arranged between two adjacent transmission cavity structures and is fixed with the hollow intercepting wall; and a water flow guide plate structure. According to the utility model, the upstream flow guide component and the permeation filtering component are sequentially distributed along the water flow direction, so that the multi-stage permeation filtering process of polluted underground water is realized, and meanwhile, the water flow guide plate structure can utilize water pressure in a manner that the transmission frame moves left and right and the transmission plate moves front and back in the transmission frame; the water flow power of the first permeation filtering layer and the permeation filtering assembly is enhanced, the permeation process is optimized and accelerated, and the treatment efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of groundwater pollution control technology, specifically to a permeable reactive wall structure for groundwater treatment. Background Technology

[0002] Reactive infiltration walls are a highly efficient, economical, and environmentally friendly passive in-situ remediation technology used primarily for treating contaminated groundwater. They work by placing one or more walls filled with reactive materials within the contaminated plume (the path of contaminated groundwater flow). As the groundwater flows naturally through the walls, contaminants are adsorbed, degraded, precipitated, or transformed by the materials within the walls, thus purifying the water. However, existing reactive infiltration walls have the following drawbacks in practical use;

[0003] A single permeable reactive barrier can only perform a single-layer permeation reaction, which has a limited permeation effect. On the other hand, multiple permeable reactive barriers not only require a large amount of work but also affect the flow of groundwater, resulting in low treatment efficiency.

[0004] To address the aforementioned issues, a permeable reactive wall structure for groundwater treatment is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a permeable reactive wall structure for groundwater treatment. This device achieves a multi-stage permeation filtration process for polluted groundwater through water-facing guide components and permeation filtration components distributed sequentially along the water flow direction. At the same time, the water flow guide plate structure can utilize water pressure to enhance the water flow dynamics of the first permeation filtration layer and permeation filtration components by moving the transmission frame left and right and the transmission plate moving back and forth inside the transmission frame, thereby optimizing and accelerating the permeation process and improving treatment efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a permeable reactive wall structure for groundwater treatment, comprising: a hollow intercepting wall; a water-facing guiding component and a permeable filtration component arranged sequentially within the hollow intercepting wall along the water flow direction, wherein the water-facing guiding component includes several transmission cavity structures, each transmission cavity structure including a transmission frame, each transmission frame having a transmission plate that can move back and forth, and the transmission plate dividing the transmission frame into a front cavity and a rear cavity; a first permeable filtration layer disposed between two adjacent transmission cavity structures and fixed to the hollow intercepting wall; and a water flow guide plate structure disposed on the hollow intercepting wall and correspondingly connected to the several transmission cavity structures, wherein when the water flow acts on and impacts the water flow guide plate structure, it drives the several transmission frames to move left and right within the hollow intercepting wall, thereby squeezing the water flow and completing the permeable filtration of the first permeable filtration layer, and the transmission plate moves back and forth within the transmission frame to enhance the water flow dynamics of the permeable filtration component.

[0007] Preferably, a partition plate is fixed in the middle of the hollow intercepting wall.

[0008] Preferably, each group of water flow guide plate structures includes a first drainage channel formed on the side wall of the transmission frame for water outlet from the front cavity; a second drainage channel formed on the partition plate and corresponding one-to-one with the first permeation filter layer for discharging the filtered water from the first permeation filter layer; and guide channels and return channels respectively formed on the hollow intercepting wall and partition plate corresponding to the front and rear sides of the transmission frame; the guide channel is equipped with a deflectable guide plate through a rotating shaft in its middle, and the guide plate is hinged to the side of the transmission plate near the first drainage channel through a hinge at its end; and a transmission assembly set inside the hollow intercepting wall for synchronous resetting of several transmission cavity structures.

[0009] Preferably, the transmission assembly includes a connecting plate that is slidably installed on the bottom wall of the hollow intercepting wall, wherein the connecting plate is fixed to the transmission frame containing the plurality of transmission cavity structures; a spring piece is also provided between one of the transmission frames at the end and the side wall of the hollow intercepting wall for synchronous reset of the plurality of transmission cavity structures.

[0010] Preferably, a rectangular cavity is formed between two adjacent transmission frames, the first permeation filter layer is placed inside the rectangular cavity, and the first drainage groove and the second drainage groove are distributed on the diagonal of the rectangular cavity and are used to form the water flow channel of the first permeation filter layer.

[0011] Preferably, the permeation filtration assembly includes symmetrically arranged assembly slots at opposite ends of the hollow intercepting wall, and a second permeation filtration layer and a third permeation filtration layer are installed between the two assembly slots in sequence along the water flow direction.

[0012] Preferably, an elongated flow cavity is provided between the second permeation filter layer and the partition plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This utility model, through the water flow guide plate structure, on the one hand, guides sewage to the space between the corresponding transmission frame and the first permeation filter layer, realizing the permeation filtration of the first permeation filter layer; on the other hand, it pushes the transmission frame closer to the first permeation filter layer on its right side, thereby reducing the space between the corresponding transmission frame and the first permeation filter layer, thus enhancing the permeation filtration power of the first permeation filter layer.

[0015] In this invention, during the process of the water flow guide plate structure being impacted by groundwater and driving the transmission frame to move to the right, the water flow guide plate structure can simultaneously drive the transmission plate to move forward inside the transmission frame and store force. When the water pressure decreases, the structural characteristics of the water flow guide plate structure itself drive the transmission frame to reset on the one hand, and cause the transmission plate to move backward inside the transmission frame on the other hand. The previously stored force can then push the groundwater in the rear cavity into the infiltration filtration component, enhancing the water flow dynamics of the infiltration filtration component and improving the infiltration effect. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a top view of the structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of AA;

[0019] Figure 4 for Figure 3 A magnified structural diagram at point D;

[0020] Figure 5 A schematic diagram of the internal cross-sectional three-dimensional structure of BB;

[0021] Figure 6 for Figure 5 A magnified structural diagram at point C.

[0022] In the diagram: 111, hollow cutoff wall; 112, partition plate; 113, assembly groove; 114, second permeation filter layer; 115, third permeation filter layer; 116, second drainage groove; 117, guide groove; 118, rotating shaft; 119, guide plate; 120, transmission frame; 121, transmission plate; 122, first drainage groove; 123, return groove; 124, spring piece; 125, connecting plate; 126, first permeation filter layer; 127, hinge; 128, elongated flow cavity. Detailed Implementation

[0023] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. The utility model will now be described in detail with reference to the accompanying drawings.

[0024] Please see Figures 1 to 6The present invention preferably provides a technical solution: a permeable reactive wall structure for groundwater treatment, comprising: a hollow intercepting wall 111; a water-facing guiding component and a permeable filtration component arranged sequentially within the hollow intercepting wall 111 along the water flow direction, wherein the water-facing guiding component includes several transmission cavity structures, wherein each transmission cavity structure includes a transmission frame 120, and each transmission frame 120 is provided with a transmission plate 121 that can move back and forth, and the transmission plate 121 divides the transmission frame 120 into a front cavity and a rear cavity; and is arranged in adjacent two The first permeation filter layer 126 is fixed between the transmission cavity structures and the hollow intercepting wall 111; and the water flow guide plate structure is provided on the hollow intercepting wall 111 and is respectively connected to the several transmission cavity structures. When the water flow acts on and impacts the water flow guide plate structure, it drives the several transmission frames 120 to move left and right in the hollow intercepting wall 111 as a whole, which is used to squeeze the water flow and complete the permeation filtration of the first permeation filter layer 126. The transmission plate 121 moves back and forth in the transmission frame 120 to enhance the water flow dynamics of the permeation filtration assembly.

[0025] In this embodiment, the hollow intercepting wall 111 is assembled in the polluted plume (the path of polluted groundwater flow). The water-facing guiding components and infiltration filtration components, sequentially distributed along the water flow direction within the hollow intercepting wall 111, can perform multi-stage infiltration filtration treatment on the pollutants in the groundwater to achieve the purpose of cleaning the water quality. Here, the transmission cavity structure where the water-facing guiding components are located and the first infiltration filtration layer 126 are spaced apart, as shown... Figure 3 As shown, the transmission cavity structure is movably installed inside the hollow intercepting wall 111, and the first permeation filter layer 126 is fixed inside the hollow intercepting wall 111. When the transmission cavity structure moves, the space between it and the adjacent first permeation filter layer 126 undergoes a volume change.

[0026] The hollow intercepting wall 111 is equipped with water flow guide structures for each of the several transmission cavity structures. When groundwater impacts the front side of the hollow intercepting wall 111, each water flow guide structure directs the sewage to the space between the corresponding transmission frame 120 and the first permeation filter layer 126 (e.g., Figure 4 The space to the left of the first permeation filter layer 126 is used to achieve permeation filtration of the first permeation filter layer 126. On the other hand, the transmission frame 120 is pushed closer to the first permeation filter layer 126 on its right side. The space between the corresponding transmission frame 120 and the first permeation filter layer 126 (such as the space to the left of the first permeation filter layer 126) is then used to achieve permeation filtration of the first permeation filter layer 126. Figure 4 The space on the left side of the first permeation filter layer 126 is reduced to enhance the permeation filtration power of the first permeation filter layer 126;

[0027] Meanwhile, each transmission chamber structure is located within a transmission plate 121 inside a transmission frame 120, which divides the transmission frame 120 into a front chamber and a rear chamber. The transmission plate 121 is connected to a water flow guide plate structure. When the water flow guide plate structure is impacted by groundwater and guides the flow, causing the transmission frame 120 to move to the right, the water flow guide plate structure can simultaneously drive the transmission plate 121 to move forward inside the transmission frame 120 and store energy. When the water pressure decreases, the structural characteristics of the water flow guide plate structure drive the transmission frame 120 to reset on the one hand, and cause the transmission plate 121 to move backward inside the transmission frame 120 on the other hand. The previously stored energy can then push the groundwater in the rear chamber into the infiltration filtration assembly, enhancing the water flow dynamics of the infiltration filtration assembly and improving the infiltration effect.

[0028] This device achieves a multi-stage infiltration filtration process for polluted groundwater by sequentially distributing water-facing guide components and infiltration filtration components along the water flow direction. At the same time, the water flow guide plate structure can utilize water pressure to enhance the water flow dynamics of the first infiltration filtration layer 126 and the infiltration filtration components by moving the transmission frame 120 left and right and the transmission plate 121 back and forth inside the transmission frame 120, thereby optimizing and accelerating the infiltration process and improving treatment efficiency.

[0029] Furthermore, a partition plate 112 is fixed in the middle of the hollow intercepting wall 111; furthermore, each set of water flow guide plate structures includes a first drainage channel 122 opened on the side wall of the transmission frame 120 and used for water outlet of the front cavity; a second drainage channel 116 opened on the partition plate 112 and corresponding one-to-one with the first permeation filter layer 126, used for the discharge of water filtered by the first permeation filter layer 126; and guide channels 117 and return channels 123 respectively opened on the hollow intercepting wall 111 and partition plate 112 corresponding to the front and rear sides of the transmission frame 120; the guide channel 117 is equipped with a deflectable guide plate 119 through a rotating shaft 118 provided in its middle, and the guide plate 119 is hinged to the side of the transmission plate 121 near the first drainage channel 122 through a hinge 127 provided at its end; and a transmission assembly is provided inside the hollow intercepting wall 111 and used for synchronous reset of several transmission cavity structures.

[0030] Combination Figure 3 , 4 As shown in Figures 5 and 6, the hollow intercepting wall 111 and the partition plate 112 are respectively provided with return channels 123 and guide channels 117 corresponding to several transmission frames 120. Each transmission frame 120 and partition plate 112 is also provided with a first drainage channel 122 and a second drainage channel 116 placed on both sides of the first permeation filter layer 126. Under high water pressure, the guide plate 119 with the rotating shaft 118 inside the guide channel 117 as the axis is hinged to the transmission plate 121 through the hinge 127. Figure 4As shown, under the tilting action of the guide plate 119, it can guide the water flow through the first drainage channel 122 and into the space between the transmission frame 120 and the first permeation filter layer 126 on its right. During this process, the water flow pushes the guide plate 119 to deflect clockwise around the rotating shaft 118. Then the guide plate 119 pushes the transmission frame 120 to the right, squeezing the groundwater between it and the first permeation filter layer 126, accelerating the groundwater to pass through the first permeation filter layer 126. Subsequently, part of the groundwater enters the permeation filter area through the second drainage channel 116 and undergoes secondary and tertiary permeation, while the other part of the groundwater enters the rear cavity through the second drainage channel 116.

[0031] Specifically: When the transmission frame 120 moves closer to the first permeation filter layer 126 on its right side, the guide plate 119 simultaneously pulls the transmission plate 121 forward inside the transmission frame 120, thus reducing the area of ​​the front cavity and increasing the area of ​​the rear cavity, thereby realizing the process of storing some groundwater in the rear cavity. This design is intended to reduce the drainage pressure of the second drainage trough 116 and increase the area of ​​groundwater and permeation filter components, and also to accumulate power.

[0032] If the groundwater pressure decreases at this time, that is, when the groundwater pressure is less than the pressure of the transmission component, the transmission component drives several transmission frames 120 to reset synchronously, that is, several guide plates 119 rotate counterclockwise to push the transmission plate 121 to move backward inside the transmission frame 120. This process pushes the groundwater originally stored in the rear cavity into the infiltration filtration component, enhancing the water flow dynamics of the infiltration filtration component.

[0033] Furthermore, an elongated flow cavity 128 is provided between the second permeation filter layer 114 and the partition plate 112, such as... Figure 4 As shown, this design can increase the contact area between groundwater and the infiltration filtration components.

[0034] Furthermore, the transmission assembly includes a connecting plate 125 that is slidably mounted on the bottom wall of the hollow cutoff wall 111, wherein the connecting plate 125 is fixed to the transmission frame 120 in which several transmission cavity structures are located; a spring piece 124 is also provided between one of the transmission frames 120 at the end and the side wall of the hollow cutoff wall 111 for synchronous reset of several transmission cavity structures.

[0035] Combination Figure 4 As shown, several transmission frames 120 are fixed to the connecting plate 125, and a spring piece 124 is provided between one of the transmission frames 120 located at the end and the side wall of the hollow intercepting wall 111. The preferred position of the spring piece 124 in this device is... Figure 4 On the left side, several transmission frames 120 as a whole Figure 3 , 4When the whole structure moves to the right, the spring 124 is stretched during the process. When the force of the water pressure pushing the transmission frames 120 to the right is less than the elastic force of the spring 124, the spring 124 drives the transmission frames 120 to reset.

[0036] Furthermore, a rectangular cavity is formed between two adjacent transmission frames 120. The first permeation filter layer 126 is placed inside the rectangular cavity. The first drainage groove 122 and the second drainage groove 116 are distributed on the diagonal of the rectangular cavity and are used to form the water flow channel of the first permeation filter layer 126.

[0037] like Figure 4 , 6 As shown, firstly, the rectangular cavity formed by two adjacent transmission frames 120 can change position by following the swing of the guide plate 119, thereby changing the volume on both sides of the first permeation filter layer 126. Specifically, when the guide plate 119 swings as... Figure 4 When the transmission frame 120 swings clockwise, it moves away from the spring piece 124, so the volume of the left side of the first permeation filter layer 126 gradually decreases and the volume of the right side gradually increases, thereby accelerating the permeation efficiency of the first permeation filter layer 126.

[0038] Secondly, the rectangular cavity has a first drainage groove 122 and a second drainage groove 116 respectively opened on its diagonals, such as Figure 4 This design maximizes the time that water stays in the rectangular cavity, ensuring permeation efficiency.

[0039] Furthermore, the permeation filtration assembly includes symmetrically arranged assembly slots 113 at opposite ends of the hollow intercepting wall 111. A second permeation filtration layer 114 and a third permeation filtration layer 115 are installed between the two assembly slots 113, distributed sequentially along the water flow direction. The first permeation filtration layer 126, the second permeation filtration layer 114, and the third permeation filtration layer 115 are all existing mature technologies, which can sequentially perform one, two, and three permeation processes on groundwater. The first permeation filtration layer 126 is preferably an activated carbon adsorption layer, the second permeation filtration layer 114 is preferably a natural mineral filling layer, and the third permeation filtration layer 115 is preferably a porous biochar layer.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Among these, there are various methods of detachable installation, such as using a combination of plug-in and snap-fit, or using bolt connections, etc.

[0041] The above description of the specific embodiments of this utility model is only used to further illustrate this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-essential improvements and adjustments made to this utility model by technical engineers based on the above description of the utility model shall fall within the scope of protection of this utility model.

Claims

1. A permeable reactive barrier structure for groundwater remediation, characterized by, include: Hollow cutoff wall (111); A water-facing guide component and a permeation filter component are arranged sequentially in the hollow intercepting wall (111) along the water flow direction. The water-facing guide component includes several transmission cavity structures, and each transmission cavity structure includes a transmission frame (120). Each of the transmission frames (120) is provided with a transmission plate (121) that can move back and forth, and the transmission plate (121) divides the transmission frame (120) into a front cavity and a rear cavity; A first permeation filter layer (126) is disposed between two adjacent transmission cavity structures and is fixedly connected to the hollow cutoff wall (111). And a water flow guide plate structure disposed on the hollow intercepting wall (111) and connected to several transmission cavity structures respectively. When the water flow acts on and impacts the water flow guide plate structure, it drives several transmission frames (120) to move left and right in the hollow intercepting wall (111) as a whole, which is used to squeeze the water flow and complete the permeation filtration of the first permeation filtration layer (126). The transmission plate (121) moves back and forth in the transmission frame (120) to enhance the water flow power of the permeation filtration assembly.

2. The permeable reactive wall structure for groundwater treatment according to claim 1, characterized in that: A central partition (112) is fixed in the middle of the hollow cutoff wall (111).

3. The permeable reactive wall structure for groundwater treatment according to claim 2, characterized in that: Each set of water flow guide plate structures includes a first drainage groove (122) formed on the side wall of the transmission frame (120) for water outlet of the front cavity. A second drainage channel (116) is provided on the partition plate (112) and corresponds one-to-one with the first permeation filter layer (126) for discharging the water filtered by the first permeation filter layer (126); The hollow intercepting wall (111) and the partition plate (112) on the front and rear sides of the corresponding transmission frame (120) are respectively provided with a flow guide (117) and a return flow channel (123); the flow guide (117) is equipped with a deflectable flow guide plate (119) through a rotating shaft (118) in its middle, and the flow guide plate (119) is hinged to the side of the transmission plate (121) near the first drainage channel (122) through a hinge (127) provided at its end; And a transmission assembly disposed inside the hollow cutoff wall (111) for synchronous resetting of several transmission cavity structures.

4. The permeable reactive wall structure for groundwater treatment according to claim 3, characterized in that: The transmission assembly includes a connecting plate (125) that is slidably installed on the bottom wall of the hollow cutoff wall (111), wherein the connecting plate (125) is fixed to the transmission frame (120) where a plurality of transmission cavity structures are located; A spring sheet (124) is also provided between one of the transmission frames (120) at the end and the side wall of the hollow cutoff wall (111) for synchronous reset of several transmission cavity structures.

5. The permeable reactive wall structure for groundwater treatment according to claim 3, characterized in that: A rectangular cavity is formed between two adjacent transmission frames (120), and the first permeation filter layer (126) is placed inside the rectangular cavity; The first drainage channel (122) and the second drainage channel (116) are distributed on the diagonal of the rectangular cavity and are used to form the water flow channels of the first permeation filter layer (126).

6. The permeable reactive wall structure for groundwater treatment according to claim 1, characterized in that: The permeation filtration assembly includes symmetrically arranged assembly slots (113) at opposite ends of the hollow cutoff wall (111), and a second permeation filtration layer (114) and a third permeation filtration layer (115) are installed between the two assembly slots (113) in sequence along the water flow direction.

7. The permeable reactive wall structure for groundwater treatment according to claim 6, characterized in that: An elongated flow cavity (128) is provided between the second permeation filter layer (114) and the partition plate (112).

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