CN115959725A - Permeable reactive barrier and construction method thereof - Google Patents
Permeable reactive barrier and construction method thereof Download PDFInfo
- Publication number
- CN115959725A CN115959725A CN202211703936.1A CN202211703936A CN115959725A CN 115959725 A CN115959725 A CN 115959725A CN 202211703936 A CN202211703936 A CN 202211703936A CN 115959725 A CN115959725 A CN 115959725A
- Authority
- CN
- China
- Prior art keywords
- partition plate
- permeable
- wall
- along
- permeable wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 35
- 230000004888 barrier function Effects 0.000 title claims abstract description 33
- 238000005192 partition Methods 0.000 claims abstract description 150
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 71
- 239000003673 groundwater Substances 0.000 claims abstract description 59
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 49
- 231100000719 pollutant Toxicity 0.000 claims abstract description 49
- 239000000945 filler Substances 0.000 claims abstract description 28
- 230000000149 penetrating effect Effects 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims abstract description 7
- 230000007246 mechanism Effects 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 5
- 230000003204 osmotic effect Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 abstract description 12
- 230000008595 infiltration Effects 0.000 description 22
- 238000001764 infiltration Methods 0.000 description 22
- 230000000694 effects Effects 0.000 description 15
- 238000012544 monitoring process Methods 0.000 description 11
- 238000001514 detection method Methods 0.000 description 10
- 230000006978 adaptation Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000003814 drug Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000011449 brick Substances 0.000 description 2
- 238000003895 groundwater pollution Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
Images
Landscapes
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention discloses a permeable reactive barrier and a construction method thereof, wherein the permeable reactive barrier comprises a permeable wall body, a porous partition plate and a partition plate, active fillers for treating pollutants in underground water when the underground water penetrates through the permeable wall body along the thickness direction are filled in the permeable wall body, and an installation groove is formed in the permeable wall body; the porous partition plate is arranged in the mounting groove, a sliding groove is formed in the upper end of the porous partition plate, and a through hole penetrates through the porous partition plate in the thickness direction; the partition plate is slidably arranged in the sliding groove along the height direction, and a through hole is formed in the partition plate in a penetrating manner along the thickness direction; the partition board has a conduction state in which the through holes and the via holes are correspondingly arranged, and a turn-off state in which the through holes and the via holes are staggered. The invention can flexibly adjust the flow path of the groundwater flowing through the permeable wall according to the change of the concentration of the pollutant of the groundwater.
Description
Technical Field
The invention relates to the technical field of groundwater pollution remediation and treatment, in particular to a permeable reactive barrier and a construction method thereof.
Background
The permeable reactive barrier is a technology which forms a passive reaction area contacting with the groundwater by installing a wall filled with reactive materials on the cross section of the flow path of the polluted groundwater, and retains and degrades the pollutants in the groundwater so as to achieve the aim of repairing the groundwater pollution. The capacity of the osmotic reactive wall to treat contaminants of the groundwater is largely dependent on the length of the groundwater flow through the osmotic reactive wall (i.e., the flow path).
The existing permeable reactive wall is generally provided with a through groove for groundwater to flow through inside the wall, and a permeable layer with active filler (such as a medicament) is filled inside the through groove along the length direction of the through groove. Because the wall bodies of the existing permeable reactive barrier are all underground, the length of the underground water flowing through the permeable layer can not be changed any more, so that the treatment capacity of the existing permeable reactive barrier on the pollutants of the underground water can not be changed according to the change of the concentration of the pollutants of the underground water; in order to ensure the treatment effect on the pollutants of the underground water, the size of the whole permeable reactive barrier can only be increased, and a thicker permeable layer is added, so that the construction cost is increased, and the waste of the medicament is also caused.
Disclosure of Invention
Therefore, the present invention is directed to overcome the defect that the treatment capacity of the permeable reactive barrier for the pollutants in the groundwater cannot be changed according to the change of the concentration of the pollutants in the groundwater in the prior art, and to provide a permeable reactive barrier capable of changing the flow path and a construction method thereof.
According to a first aspect of the present invention, there is provided a permeable reactive barrier comprising:
the permeable wall body is used for treating pollutants in underground water when the underground water penetrates through the permeable wall body along the thickness direction, active fillers are filled in the permeable wall body, and an installation groove is formed in the permeable wall body;
the perforated partition plate is arranged in the mounting groove, a sliding groove is formed in the upper end of the perforated partition plate, and a through hole penetrates through the perforated partition plate in the thickness direction;
the partition plate is slidably arranged in the sliding groove along the height direction, and a through hole is formed in the partition plate in a penetrating manner along the thickness direction;
the partition board is provided with a conducting state enabling the through hole and the through hole to be correspondingly arranged and a switching-off state enabling the through hole and the through hole to be staggered.
The permeable reactive barrier according to the invention has at least the following technical effects: the partition plate is slidably arranged in the sliding groove, so that when the concentration of pollutants in groundwater is low, the position of the partition plate can be adjusted along the height direction to the position where the through hole of the partition plate is aligned with the through hole of the porous partition plate, groundwater flows through the permeable wall body from the path directly passing through the through hole of the partition plate and the through hole of the porous partition plate, and the overflowing path can be shortened on the basis of treating the pollutants with low concentration in groundwater; when the concentration of the pollutants in the underground water is high, the position of the partition plate can be adjusted along the height direction to the position where the through holes of the partition plate and the through holes of the porous partition plate are staggered, so that the underground water can flow from one end of the permeable wall to the other end only after bypassing the porous partition plate and passing through the part, which is positioned below the porous partition plate in the permeable wall body along the height direction, the through-flow path of the underground water flowing through the permeable wall body is increased, and the treatment effect of the pollutants with high concentration in the underground water is ensured; the flow path of the underground water flowing through the permeable wall body is flexibly adjusted according to the change of the concentration of the pollutants in the underground water.
Preferably, the depth of the installation groove along the height direction is less than the height of the penetration wall;
when the partition board is in the off state, the projection area of the porous partition board and the partition board in the thickness direction is suitable for blocking underground water from directly penetrating through the permeable wall body in the thickness direction.
Preferably, the method further comprises the following steps: the water-stop sheet comprises a vertical section attached to one side of the permeation wall body facing to the inflow direction of the groundwater current; the projection of the vertical section along the thickness direction at least partially overlaps with the perforated partition plate; the water-stop sheet also comprises a horizontal segment which is connected with the vertical segment and is positioned below the permeable wall body along the height direction.
Preferably, the water-stop sheet further comprises a vertical section, the vertical section is formed by folding one end of the horizontal section, which deviates from the vertical section, and the projection of the vertical section along the thickness direction falls into the range of the vertical section.
Preferably, the partition plate is provided as a rubber plate.
Preferably, the partition panel is driven to be automatically lifted by a lifting mechanism.
Preferably, at least one side of the partition plate extends out of the sliding groove and is provided with a rack along the height direction; the lifting mechanism is provided with a gear meshed with the rack, and the gear is driven by a motor.
Preferably, a water quality detection sensor is arranged on one side of the permeation wall body facing to the inflow direction of groundwater water flow, and the water quality detection sensor is electrically connected with the lifting mechanism.
According to a second aspect of the present invention, there is provided a method for constructing a permeable reactive wall provided in the first aspect, comprising the steps of:
selecting the position of a building wall, excavating a building ditch with proper depth and length by using TRD equipment, and filling active filler into the building ditch to a proper height;
placing the perforated partition plate with the sliding groove into the construction ditch, and slidably arranging the partition plate in the sliding groove of the perforated partition plate; and continuously filling active filler into the construction ditch until the construction ditch is filled with the active filler to form a permeable wall.
The construction method of the permeable reactive barrier according to the invention has at least the following technical effects:
1. the permeable wall can be obtained by adopting TRD equipment to excavate, build and fill active filler, brick walls are not needed, the building mode is simple, and the permeable wall with continuity and high uniformity can be formed.
2. The partition board is slidably arranged in the sliding groove, so that the position of the partition board in the sliding groove can be flexibly adjusted in the height direction according to the concentration of pollutants in underground water, the through holes of the partition board and the through holes of the porous partition board are staggered or aligned with each other, the overflowing path of the underground water flowing through the permeable wall body can be flexibly adjusted according to the change of the concentration of the pollutants in the underground water, and compared with the prior art that the thickness of the permeable reactive wall needs to be thickened, the treatment effect of the underground water containing the pollutants with high concentration can be ensured; the use of active filler can be reduced, the construction cost and the construction difficulty can be reduced, and the waste of medicament can be reduced.
Preferably, the water-stop sheet is mounted to the bottom of the construction trench before the construction trench is excavated but filled with the active filler.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic perspective view of a permeable reactive barrier according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view at A in FIG. 1;
fig. 3 is a schematic cross-sectional front view of a partition plate in a permeable reactive barrier according to an embodiment of the present invention;
fig. 4 is a schematic sectional front view of a partition board in a permeable reactive barrier according to an embodiment of the present invention in a shutdown state;
FIG. 5 is a schematic perspective view of a porous partition in a permeable reactive barrier according to an embodiment of the present invention;
FIG. 6 is a schematic perspective view of a partition plate in a permeable reactive barrier according to an embodiment of the present invention;
FIG. 7 is an enlarged schematic view at B of FIG. 6;
FIG. 8 is a schematic front view of a permeable wall in a permeable reactive barrier according to an embodiment of the present invention;
fig. 9 is a schematic perspective view of another perspective view of a permeable reactive barrier according to an embodiment of the invention.
Description of reference numerals:
1-penetrating a wall body; 2-a perforated partition; 3-partition panel; 5-a water-stop sheet; 11-mounting grooves; 21-a sliding groove; 22-a via hole; 23-a through groove; 31-a through hole; 32-a rack; 33-a connecting plate; 41-gear; 42-a motor; 51-a vertical section; 52-horizontal section; 53-vertical section.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example one
As shown in fig. 1, fig. 3, fig. 4, and fig. 8, the permeable reactive barrier provided in this embodiment includes a permeable wall 1, a porous partition 2, and a partition plate 3, wherein an active filler for treating pollutants in groundwater when the groundwater penetrates through the permeable wall 1 in a thickness direction is filled in the permeable wall 1, and an installation groove 11 is formed in the permeable wall 1; the perforated partition board 2 is arranged in the mounting groove 11, a sliding groove 21 is arranged inside the upper end of the perforated partition board 2, and a through hole 22 is formed in the perforated partition board 2 in a penetrating manner along the thickness direction; the partition plate 3 is slidably arranged in the sliding groove 21 along the height direction, and a through hole 31 is formed in the partition plate 3 in a penetrating manner along the thickness direction; the partition panel 3 has an on state in which the through hole 31 and the via hole 22 are provided in correspondence, and an off state in which the through hole 31 and the via hole 22 are misaligned with each other. Compared with the prior art, the partition plate 3 is slidably arranged in the sliding groove 21, so that when the concentration of pollutants in groundwater is low or the flow rate is slow (for example, in dry seasons), as shown in fig. 3, the position of the partition plate 3 can be adjusted up and down along the height direction to the position where the through hole 31 of the partition plate 3 is aligned with the through hole 22 of the perforated partition plate 2 (i.e., the partition plate 3 is in a conducting state), so that groundwater flows through the permeable wall 1 from a path directly passing through the through hole 31 of the partition plate 3 and the through hole 22 of the perforated partition plate 2 (such as a path shown by L1 in fig. 3), and the flowing path can be shortened on the basis of treating the pollutants in the groundwater; when the concentration of the pollutants in the groundwater is high or the flow rate is high (for example, when a rainy season comes), as shown in fig. 4, the position of the partition plate 3 can be adjusted up and down along the height direction to a position where the through hole 31 of the partition plate 3 is staggered with the through hole 22 of the perforated partition plate 2 (that is, the partition plate 3 is in a closed state), so that the groundwater bypasses the perforated partition plate 2, and can flow from one end of the permeable wall 1 to the other end (a route shown as L2 in fig. 4) through the part, which is located relatively below the perforated partition plate 2 in the height direction, in the permeable wall 1, thereby increasing the overflowing path of the groundwater flowing through the permeable wall 1 and ensuring the treatment effect on the pollutants in the groundwater; the flow path of the groundwater flowing through the infiltration wall 1 can be flexibly adjusted according to the change of the concentration of the pollutants in the groundwater or the change of the flow speed of the groundwater. And in the process of treating the underground water containing low-concentration pollutants or low in flow rate, the underground water does not need to flow through the active filler at partial positions, the service life of the active filler is prolonged, and the resource waste is reduced. It is to be understood that the thickness direction and the height direction described in the embodiment of the present invention refer to the thickness direction and the height direction shown in fig. 1, the up-down direction refers to an orientation parallel to the height direction, and the upper and lower ends are described based on the angle of view shown in fig. 1.
It can be understood that, in order to avoid that, after the through holes 31 of the partition board 3 and the through holes 22 of the perforated partition board 2 are adjusted to be arranged in a staggered manner (i.e. the partition board 3 is in a closed state), groundwater can still directly permeate through the part of the perforated partition board 2 not provided with the through holes 22 and flow through the permeable wall 1; selecting the porous partition plate 2 as a waterproof stainless steel material; simultaneously, the porous partition plate 2 made of stainless steel can also improve the strength of the whole permeable reactive barrier.
Specifically, in order to avoid scouring the active filler in the permeable wall 1 during the process that the groundwater containing lower concentration of pollutants or with slow flow rate flows through the permeable wall 1 along the route shown as L1 in FIG. 3, so that the active filler is lost; nylon nets with at least 100 meshes are arranged in the through holes 31 of the partition plate 3 and the through holes 22 of the porous partition plate 2.
Specifically, after the partition board 3 is adjusted to be in the off state, the groundwater can sufficiently bypass the perforated partition board 2 along the route shown as L2 in fig. 4, and only can flow from one end of the permeable wall 1 to the other end through the part of the permeable wall 1 located relatively below the perforated partition board 2 in the height direction, and the depth of the installation groove 11 in the height direction is set to be smaller than the height of the permeable wall 1; and the projection area of the porous partition plate 2 and the partition plate 3 in the thickness direction is set to be suitable for blocking the underground water from directly penetrating the permeable wall 1 in the thickness direction.
As shown in fig. 1, 3, 4 and 8, as a modified embodiment of the present invention, the permeable reactive barrier further includes a water-stop sheet 5, and the water-stop sheet 5 includes a vertical section 51 attached to a side of the permeable wall 1 facing the inflow direction of groundwater; the projection of the vertical section 51 in the thickness direction at least partially overlaps with the perforated partition 2; the water-stop sheet 5 further comprises a horizontal section 52 connected to the vertical section 51 and located relatively below the infiltration wall 1 in the height direction. Due to the blocking effect of the vertical section 51 on the groundwater flowing into the permeable wall 1, the groundwater flowing into is lifted to a position higher than the bottom of the perforated partition plate 2 and then flows into the permeable wall 1, so that the groundwater containing lower concentration of pollutants or having low flow velocity flows through the permeable wall 1 from the path directly passing through the through hole 31 of the partition plate 3 and the through hole 22 of the perforated partition plate 2 substantially along the route shown by L1 in fig. 3 after the position of the partition plate 3 is adjusted to the position where the through hole 31 of the partition plate 3 is aligned with the through hole 22 of the perforated partition plate 2 (i.e., the partition plate 3 is in a conducting state), the groundwater containing lower concentration of pollutants or having low flow velocity rarely flows through the active filler located relatively below the perforated bottom plate in the height direction, and the service life of the active filler is prolonged; and after the partition plate 3 is adjusted to be in a turn-off state, groundwater containing pollutants with higher concentration or high flow speed flows into the infiltration wall body 1 from a position higher than the vertical section 51 and descends to a position lower than the porous partition plate 2, bypasses the porous partition plate 2, flows to the other end from one end of the infiltration wall body 1 through the part, located below the porous partition plate 2 in the infiltration wall body 1 along the height direction, of the porous partition plate 2, and further increases the overflowing path of groundwater flowing through the infiltration wall body 1, so that the infiltration wall body 1 with a thinner thickness can ensure the treatment effect of pollutants in the groundwater.
As shown in fig. 1, 3, 4, and 8, as an improved embodiment of the present invention, the water-stop sheet 5 further includes a vertical section 53, the vertical section 53 is formed by folding an end of the horizontal section 52 away from the vertical section 51, and a projection of the vertical section 51 in the thickness direction falls within a range of the vertical section 53. Through the blocking effect of the vertical section 53 on the flowing of the underground water, the inflowing underground water is lifted to the height position higher than the vertical section 53 and then flows out of the permeable wall 1, the overflowing path of the underground water flowing through the permeable wall 1 is prolonged, and the treatment effect on pollutants in the underground water can also be ensured by the permeable wall 1 with the thinner thickness.
As shown in fig. 1 and 8, as a modified embodiment of the present invention, in order to more sufficiently make the groundwater containing a lower concentration of pollutants or having a slow flow rate flow through the infiltration wall 1 along the route (i.e., a shorter flow path) as shown by L1 in fig. 3; the installation groove 11 is a through groove which penetrates through the upper end of the infiltration wall body 1 along the length direction. It is to be understood that the lengthwise direction described in the embodiments of the present invention refers to the lengthwise direction shown in fig. 1.
Specifically, the partition plate 3 is made of rubber, and the rubber has elasticity, so that the side wall of the partition plate 3 is tightly attached to the surrounding wall of the sliding groove 21, and the through hole 31 of the partition plate 3 is ensured to be tightly aligned with the through hole 22 of the perforated partition plate 2, so that groundwater containing lower concentration of pollutants or having a slow flow rate can sufficiently flow through the infiltration wall 1 along a short overflowing path as shown by L1 in fig. 3; meanwhile, as the partition plate 3 made of rubber is impermeable, after the position of the partition plate 3 is adjusted to the position where the through hole 31 of the partition plate 3 and the through hole 22 of the porous partition plate 2 are staggered, underground water containing pollutants with higher concentration or high flow speed can basically flow through the permeable wall 1 along a longer overflowing path shown as L2 in fig. 4, and the treatment effect on the pollutants in the underground water is ensured. And the partition panel 3 of rubber material can be compactly filled in the sliding tray 21 under the effect of self elasticity, and the partition panel 3 basically can not produce the removal along the direction of height at the sliding tray 21 under the effect of not great lift power or pressure to ensure the control effect to switching on or off of the inside of the porous partition plate 2, and then ensure the stable effect of adjusting the overflowing path of groundwater flow through the infiltration wall body 1. It will be appreciated that the above-mentioned effect can also be substantially achieved by providing the partition wall 3 in a flexible plastic material. It should be noted that the lifting force and the pressing force described in the present embodiment are based on the view of fig. 1, where the force that lifts the partition plate 3 is the lifting force and the force that lowers the partition plate 3 is the pressing force.
In order to solve the problem of large amount of manual labor caused by manually adjusting the position of the partition board 3 in the sliding groove 21, in an improved embodiment of the present invention, the osmotic reaction wall further includes a lifting mechanism for driving the partition board 3 to automatically lift in the height direction, and the height position of the partition board 3 in the sliding groove 21 can be automatically adjusted by controlling the lifting mechanism instead of manually according to the requirement of the change of the overcurrent path, so that the partition board 3 can be controlled to automatically switch between the on state and the off state, and the automation level is high.
As shown in fig. 1, 2 and 9, the lifting mechanism includes two motors 42 respectively disposed at the front side and the rear side of the permeable wall 1, an output end of each motor 42 is provided with a gear 41, each gear 41 is engaged with a rack 32, and the two racks 32 are respectively disposed at the front side and the rear side of the partition plate 3 along the height direction; the two motors 42 are controlled to respectively drive the two gears 41 to reversely rotate at the same rotating speed, so as to drive the two racks 32 to move in the height direction at the same speed, and further drive the partition panel 3 to smoothly and accurately lift in the sliding groove 21. It should be understood that the above is only one preferred for the number of the motor 42, the gear 41 and the rack 32, and the number of the motor 42, the gear 41 and the rack 32 may be set to one according to actual needs. It should be noted that the front and back sides set forth herein are described based on the perspective shown in FIG. 1; the front-back direction refers to an orientation parallel to the longitudinal direction.
In addition to the above embodiments, considering that the partition plate 3 is made of rubber, the joint between the rack 32 and the partition plate 3 may be easily deformed and damaged during the process of the rack 32 being lifted or lowered by the gear 41; in order to solve this problem, as shown in fig. 5, a through groove 23 communicating with the sliding groove 21 is provided at the upper end of each of the front and rear side walls of the holed partition 2; as shown in fig. 1, 2, 6 and 7, the partition plate 3 is provided with a connecting plate 33 made of a metal material and extending into the through groove 23 at the front side wall and the rear side wall thereof, the connecting plate 33 is slidably connected in the through groove 23 by means of a guide rail and a guide groove, and the rack 32 is connected to the connecting plate 33 at a side away from the partition plate 3.
As another alternative to the above-mentioned lifting mechanism, the lifting mechanism comprises an electric telescopic rod (not shown in the figure), and the telescopic end of the electric telescopic rod is connected with the partition plate 3. Through the flexible of control electric telescopic handle, can realize the adjustment to the high position of partition panel 3 in sliding tray 21 to control partition panel 3 and switch between on-state and off-state.
As an improved embodiment of the present invention, a water quality detection sensor (not shown) is disposed on one side of the infiltration wall 1 facing the inflow direction of the groundwater, the water quality detection sensor is used for monitoring the pollutant concentration of the groundwater, and the water quality detection sensor is electrically connected to the lifting mechanism. Monitoring the concentration of pollutants contained in underground water in advance through a water quality detection sensor; when the concentration of pollutants in the groundwater is monitored to be obviously changed (for example, the concentration is changed from high concentration to low concentration), the water quality detection sensor transmits a signal to control the lifting mechanism to drive the partition plate 3 to move in the sliding groove 21 along the height direction, so that the flow path of groundwater flowing through the permeable wall 1 is automatically adjusted according to the concentration of the pollutants in the groundwater to carry out corresponding adaptation, and the intelligent level is high; especially suitable for remote field.
As a modified embodiment of the present invention, a water flow sensor (not shown in the drawings) for monitoring the flow rate of groundwater is provided on the side of the infiltration wall 1 facing the inflow direction of groundwater. The flow sensor monitors the flow velocity of the underground water to be treated in advance, when the flow velocity of the underground water is monitored to be obviously changed (for example, the flow velocity is changed from fast to slow), the flow sensor transmits a signal to control the lifting mechanism to drive the partition plate 3 to lift in the sliding groove 21 along the height direction, so that the flow path of the underground water flowing through the permeable wall 1 is automatically adjusted according to the flow velocity of the underground water to perform corresponding adaptation, and the intelligent level is high.
Example two
As shown in fig. 1 to 9, a method for constructing an infiltration reaction wall provided in this embodiment is used for constructing the infiltration reaction wall described in embodiment 1, and the method for constructing the infiltration reaction wall includes the following steps:
selecting the position of a building wall, excavating a building ditch with proper depth and length by using TRD equipment, and filling active filler into the building ditch to a proper height;
placing the perforated partition plate 2 with the sliding groove 21 into the construction ditch, and slidably arranging the partition plate 3 in the sliding groove 21 of the perforated partition plate 2; and continuously filling active filler into the construction ditch until the construction ditch is filled to form the permeable wall body 1.
Compared with the prior art, the construction method of the embodiment of the invention has the advantages that the permeable wall body 1 can be obtained by adopting TRD equipment to carry out excavation construction and filling active fillers, and the whole construction process of the construction method does not need brick walls, the construction mode is simple, and the continuous permeable wall body 1 with high uniformity can be formed. Meanwhile, the partition plate 3 is slidably arranged in the sliding groove 21, so that the position of the partition plate 3 in the sliding groove 21 can be flexibly adjusted in the height direction according to the concentration of pollutants in underground water or the flow rate of the underground water, the through hole 31 of the partition plate 3 and the through hole 22 of the porous partition plate 2 are staggered or aligned with each other, the flow path of the underground water flowing through the permeable wall body 1 can be flexibly adjusted according to the concentration change of the pollutants in the underground water or the flow rate change of the underground water, and compared with the prior art that the thickness of the permeable reaction wall needs to be increased, the treatment effect on the underground water containing the pollutants with high concentration can be ensured.
As a modified embodiment of the present invention, a water-stop sheet 5 is installed at the bottom of the construction trench before the construction trench is excavated and filled with the active filler, and the water-stop sheet 5 includes a vertical section 51 attached to one side of the infiltration wall 1 facing the inflow direction of groundwater; the projection of the vertical section 51 in the thickness direction at least partially overlaps with the perforated partition 2; the water-stop sheet 5 further comprises a horizontal section 52 connected to the vertical section 51 and located relatively below the infiltration wall 1 in the height direction. The water-stop sheet 5 can support the inside of the constructed ditch to a certain extent, effectively prevents the ditch wall of the constructed ditch from collapsing, realizes the sectional construction of the permeable reactive barrier, and improves the working efficiency. Preferably, in order to further enhance the supporting performance of the water stop sheet 5 on the inside of the construction ditch, the water stop sheet 5 further comprises a vertical section 53, the vertical section 53 is formed by folding one end of the horizontal section 52, which is far away from the vertical section 51, and the projection of the vertical section 51 in the thickness direction falls within the range of the vertical section 53.
As a modified embodiment of the present invention, a water quality detecting sensor (not shown in the drawings) is disposed on the trench wall of the construction trench before the construction trench is excavated but before the active filler is filled; and the outer side wall of the permeable wall body 1 is provided with a lifting mechanism which is electrically connected with the water quality detection sensor, and the lifting mechanism is used for automatically lifting the partition board 3 along the height direction. The concentration of pollutants contained in underground water flowing into the front of the permeable wall body 1 is monitored in real time through the water quality detection sensor, the concentration of the pollutants contained in the underground water is comprehensively judged through a program to be obviously changed (for example, the concentration is changed from high concentration to low concentration), the automatic control lifting mechanism drives the partition board 3 to automatically rise or fall along the height direction in the sliding groove 21, so that the corresponding adaptation is carried out by automatically adjusting the overflow path of the underground water flowing through the permeable wall body 1 according to the concentration of the pollutants in the underground water, and the intelligent level is high. Specifically, the lifting mechanism includes two motors 42 respectively disposed on the front side and the rear side of the permeable wall 1, an output end of each motor 42 is provided with a gear 41, each gear 41 is engaged with a rack 32, and the two racks 32 are respectively disposed on the front side and the rear side of the partition panel 3 along the height direction. It should be noted that the front side and the back side described herein are described based on the perspective shown in fig. 1; the front-back direction refers to an orientation parallel to the longitudinal direction.
As a development of the invention, a water flow sensor (not shown in the figure) for monitoring the flow rate of groundwater is arranged on the trench wall of the construction trench before the construction trench is excavated but filled with the active filler. The flow velocity of the underground water flowing into the permeable wall 1 is monitored in real time through the water flow sensor, the obvious change (for example, the flow velocity is changed from fast to slow) of the flow velocity of the underground water is comprehensively researched and judged through a program, the automatic control lifting mechanism drives the partition plate 3 to automatically lift or descend in the sliding groove 21 along the height direction, so that the corresponding adaptation is carried out by automatically adjusting the flow path of the underground water flowing through the permeable wall 1 according to the flow velocity of the underground water, and the intelligent level is high.
As a modified embodiment of the present invention, a monitoring well (not shown in the drawings) is established on the side of the infiltration wall 1 facing the inflow direction of the groundwater flow, and a water flow sensor and a water quality detection sensor are arranged in the monitoring well. The concentration and the flow velocity of the pollutants contained in the groundwater before flowing into the permeable wall 1 can be monitored in real time in advance, and whether the concentration or the flow velocity of the pollutants contained in the groundwater has obvious change or not is comprehensively judged through a program, so that the corresponding adaptation can be carried out by automatically adjusting the flow path of the groundwater flowing through the permeable wall 1, and the intelligent level is high.
Considering that the pores in the active filler are blocked by gas generated in the degradation process along with the long-time operation of the permeable reactive wall, so that the pollution treatment capability of the permeable reactive wall is reduced; in order to find out in time that the pollution treatment capacity of the permeable reactive barrier is reduced to be incapable of being used normally and is rectified; set up monitoring well (not shown in the figure) in one side that infiltration wall body 1 deviates from groundwater rivers inflow direction, be provided with the determine module who is used for detecting the concentration of the pollutant of the groundwater that flows out through infiltration wall body 1 in the monitoring well, determine module signal connection has backstage monitoring system, determine module real-time supervision and transmit for monitoring system through the concentration of the groundwater pollutant of handling, judge the infiltration reaction wall because of long-time operation leads to the passivation after, remind the staff to rectify and improve when monitoring system.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A permeable reactive wall, comprising:
the permeable wall (1) is used for treating pollutants in underground water when the underground water penetrates through the permeable wall (1) along the thickness direction, active fillers are filled in the permeable wall (1), and a mounting groove (11) is formed in the permeable wall (1);
the perforated partition plate (2) is arranged in the mounting groove (11), a sliding groove (21) is formed in the upper end of the perforated partition plate (2), and a through hole (22) is formed in the perforated partition plate (2) in a penetrating mode in the thickness direction;
the partition plate (3) is slidably arranged in the sliding groove (21) along the height direction, and a through hole (31) penetrates through the partition plate (3) along the thickness direction;
the partition plate (3) has a conduction state in which the through hole (31) and the via hole (22) are arranged in correspondence, and a disconnection state in which the through hole (31) and the via hole (22) are misaligned.
2. A permeable reactive barrier according to claim 1, characterized in that the depth of the installation groove (11) in the height direction is less than the height of the permeable wall (1);
when the partition board (3) is in the off state, the projection area of the porous partition board (2) and the partition board (3) along the thickness direction is suitable for blocking underground water from directly penetrating through the permeable wall body (1) along the thickness direction.
3. A permeable reactive barrier according to claim 1 or 2, further comprising: the water-stop plate (5) comprises a vertical section (51) attached to one side of the permeable wall body (1) facing the inflow direction of the groundwater current; the projection of the vertical section (51) along the thickness direction at least partially overlaps with the perforated partition plate (2); the water-stop sheet (5) further comprises a horizontal section (52) which is connected with the vertical section (51) and is positioned below the permeable wall body (1) relatively along the height direction.
4. A permeable reactive barrier according to claim 3, characterized in that the water-stop sheet (5) further comprises a vertical section (53), the vertical section (53) is formed by folding an end of the horizontal section (52) away from the vertical section (51), and a projection of the vertical section (51) in the thickness direction falls within the range of the vertical section (53).
5. A permeable reactive barrier according to claim 1, wherein the partition panels (3) are provided as rubber sheets.
6. A permeable reactive barrier according to claim 1, 2 or 5, wherein the partition wall (3) is automatically lifted by a lifting mechanism.
7. A permeable reactive wall according to claim 6, characterized in that at least one side of the partition (3) extends out of the sliding groove (21) and is provided with a rack (32) along the height direction; the lifting mechanism is provided with a gear (41) meshed with the rack (32), and the gear (41) is driven by a motor (42).
8. A permeable reactive barrier according to claim 6, characterized in that a water quality detecting sensor is arranged on one side of the permeable wall (1) facing the inflow direction of groundwater water flow, and the water quality detecting sensor is electrically connected with the lifting mechanism.
9. A method for constructing an osmotic reaction wall, which is used for constructing the osmotic reaction wall according to any one of claims 1 to 7, comprising the steps of:
selecting the position of a building wall, excavating a building ditch with proper depth and length by using TRD equipment, and filling active filler into the building ditch to a proper height;
placing the perforated partition plate (2) with the sliding groove (21) into the construction ditch, and slidably arranging the partition plate (3) in the sliding groove (21) of the perforated partition plate (2); and continuously filling active filler into the construction ditch until the construction ditch is filled with the active filler to form a permeable wall body (1).
10. A method of constructing a permeable reactive barrier according to claim 9, wherein the water-stop sheet (5) is installed at the bottom of the construction trench before the construction trench is excavated and filled with the active filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211703936.1A CN115959725A (en) | 2022-12-29 | 2022-12-29 | Permeable reactive barrier and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211703936.1A CN115959725A (en) | 2022-12-29 | 2022-12-29 | Permeable reactive barrier and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115959725A true CN115959725A (en) | 2023-04-14 |
Family
ID=87359770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211703936.1A Pending CN115959725A (en) | 2022-12-29 | 2022-12-29 | Permeable reactive barrier and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115959725A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001131955A (en) * | 1999-10-29 | 2001-05-15 | Sumitomo Metal Ind Ltd | Purifying structure and purifying method of soil and ground water pollution by use of diaphragm wall |
| CN206447682U (en) * | 2017-02-09 | 2017-08-29 | 河南城建学院 | A kind of underground water pollution repair system |
| CN110683654A (en) * | 2019-08-09 | 2020-01-14 | 浙江海洋大学 | High-efficient whole autotrophic nitrogen removal device |
| CN211445174U (en) * | 2019-09-24 | 2020-09-08 | 中建环能科技股份有限公司 | Liquid level adjusting device for super-magnetic separator |
-
2022
- 2022-12-29 CN CN202211703936.1A patent/CN115959725A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001131955A (en) * | 1999-10-29 | 2001-05-15 | Sumitomo Metal Ind Ltd | Purifying structure and purifying method of soil and ground water pollution by use of diaphragm wall |
| CN206447682U (en) * | 2017-02-09 | 2017-08-29 | 河南城建学院 | A kind of underground water pollution repair system |
| CN110683654A (en) * | 2019-08-09 | 2020-01-14 | 浙江海洋大学 | High-efficient whole autotrophic nitrogen removal device |
| CN211445174U (en) * | 2019-09-24 | 2020-09-08 | 中建环能科技股份有限公司 | Liquid level adjusting device for super-magnetic separator |
Non-Patent Citations (1)
| Title |
|---|
| 生态环境部土壤生态环境司等: "土壤污染风险管控与修复技术手册", 中国环境出版集团 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114716066A (en) | Permeable reactive barrier coupled circulating well system and method for repairing underground water | |
| CN115959725A (en) | Permeable reactive barrier and construction method thereof | |
| CN114351647A (en) | Road sunken slope road junction buoyancy formula manger plate structure and garage access & exit | |
| CN114687378B (en) | Novel rigid landfill | |
| CN111620509B (en) | Blocking type modularized underground water reaction wall and implementation method | |
| KR102325195B1 (en) | Emergency shut-off type floodgate winch including instant-type overload detection circuit and control method | |
| WO2003071193A2 (en) | Heating system, method for operating a heating system and use thereof | |
| CN216108865U (en) | Pipeline system for rainwater source emission reduction | |
| CN115999240A (en) | Automatic sewage pretreatment plugging detection system and plugging detection control method | |
| CN112177130A (en) | Automatic collection of percolating water is from carrying formula waterproof system | |
| CN109837928B (en) | Impermeable curtain, drainage guide impermeable system and application method of impermeable curtain | |
| CN111794339B (en) | Drainage ditch for municipal works | |
| CN218814202U (en) | Closure device for combined pipeline | |
| CN216689643U (en) | Automatic collection of percolating water is from carrying formula waterproof system | |
| CN114922361A (en) | Capillary siphon type waterproof technology | |
| CN215640387U (en) | Deep sampling device for water quality detection of hydraulic engineering | |
| CN218713335U (en) | Double-membrane type composite geomembrane anchoring anti-seepage anti-floating structure | |
| CN221523465U (en) | Hydraulic engineering seepage prevention structure | |
| CN115448417B (en) | Oil stain emergency collection system and oil stain emergency collection method | |
| CN221298150U (en) | Rainwater dirt-removing and flow-dividing electric gate | |
| CN213979211U (en) | A forebay drainage structures for rainwater drainage pumping station | |
| JP3386168B2 (en) | Waste landfill method and waste landfill site | |
| CN219914798U (en) | Leakage detection system of reservoir | |
| CN216195539U (en) | Waterproof board for building | |
| CN221822835U (en) | Water-stopping and seepage-proofing structure for engineering construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20230414 |
|
| RJ01 | Rejection of invention patent application after publication |