CN114314813A - Biological filling permeable reaction wall and construction method thereof - Google Patents
Biological filling permeable reaction wall and construction method thereof Download PDFInfo
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- CN114314813A CN114314813A CN202111647797.0A CN202111647797A CN114314813A CN 114314813 A CN114314813 A CN 114314813A CN 202111647797 A CN202111647797 A CN 202111647797A CN 114314813 A CN114314813 A CN 114314813A
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 50
- 238000010276 construction Methods 0.000 title claims abstract description 26
- 238000011049 filling Methods 0.000 title claims abstract description 23
- 239000000945 filler Substances 0.000 claims abstract description 101
- 230000004888 barrier function Effects 0.000 claims abstract description 18
- 239000002002 slurry Substances 0.000 claims description 35
- 229920001222 biopolymer Polymers 0.000 claims description 34
- 238000002955 isolation Methods 0.000 claims description 32
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- 238000012544 monitoring process Methods 0.000 claims description 14
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- 125000006850 spacer group Chemical group 0.000 claims description 5
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- 238000009413 insulation Methods 0.000 claims 2
- 238000005266 casting Methods 0.000 claims 1
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Abstract
The invention relates to the technical field of soil and underground water pollution treatment, in particular to a biological filling permeable reactive barrier and a construction method thereof. A bio-packed permeable reaction wall comprising: the accommodating pool is filled with active filler; the circulating air ducts are embedded in the active filler, and a plurality of groups of circulating air ducts are arranged at intervals along the length direction of the accommodating pool; keep apart the lid, set up at the active filler upside, the circulation air duct runs through and keeps apart the lid setting. The active filler is filled in the containing tank and is used for degrading and treating pollutants in underground soil or underground water. The active filler is pumped by the circulating air guide pipe at regular intervals, so that the blocking degree of the active filler by gas is reduced, and meanwhile, a filler cleaning agent can be injected into the active filler at regular intervals through the circulating air guide pipe to clean the filler, so that the passivation condition of the filler is improved, and the long-term stable operation of the reaction wall is maintained.
Description
Technical Field
The invention relates to the technical field of soil and underground water pollution treatment, in particular to a biological filling permeable reactive barrier and a construction method thereof.
Background
The permeable reactive barrier technology is that a wall filled with active filler is installed under the polluted site to form a passive reactive area, and pollutants in underground water are intercepted and removed. In the prior art, when a reaction wall body is built by a biological glue filling method, in order to fill all ditches, the consumption of biological glue is excessive, and the consumption of enzyme preparations in the subsequent enzyme solution circulating step is excessive. On one hand, the cost is too high, and on the other hand, the degradation effect of the biological glue is poor, so that the permeability coefficient can not meet the design requirement. And secondly, excessive biogel is consumed by microorganisms in soil after being decomposed and generates a large amount of gas such as methane, nitrogen and the like to block filler pores, so that the permeability coefficient of the permeable reactive barrier is reduced, and the pollutant remediation capability is weakened. In addition, the pipeline coverage of the circulating enzyme preparation in the original construction method is poor, the decomposition effect of the biogum is influenced to a certain extent, and the circulating enzyme preparation can only be used for completing the circulation of the enzyme preparation, so that the secondary utilization value is avoided. Finally, the original construction method has no monitoring facilities and no monitoring sites, so that the quality of the constructed permeable reactive wall cannot be known, and the running condition of the permeable reactive wall cannot be known.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects of large biological glue usage amount, poor coverage of circulating pipelines, no secondary utilization value, reduced or even ineffective pollutant interception and treatment capability along with the increase of operation time, no monitoring facilities and the like of the permeable reactive wall in the prior art, thereby providing the biological filling permeable reactive wall and the construction method thereof.
In order to solve the above technical problems, the present invention provides a bio-packed permeable reactive barrier, comprising:
the accommodating pool is filled with active filler;
the circulating air ducts are embedded in the active filler, and a plurality of groups of circulating air ducts are arranged at intervals along the length direction of the accommodating pool;
the isolation cover body is arranged on the upper side of the active filler, and the circulating air duct penetrates through the isolation cover body.
Optionally, a plurality of circulating air guide branch pipes are axially communicated with the circulating air guide pipe at intervals.
Optionally, the circulation gas guide branch pipe is arranged obliquely downwards.
Optionally, a one-way vent pipe is further arranged on the isolation cover body in a penetrating manner, and the one-way vent pipe extends towards the active filler.
Optionally, a plurality of monitoring assemblies are embedded in the active filler.
The invention also provides a construction method of the biological filling permeable reactive barrier, which is used for constructing the biological filling permeable reactive barrier and comprises the following steps:
excavating the ground at the position of building a wall to form an accommodating pool, and continuously injecting biopolymer slurry into the accommodating pool in the excavating process;
placing the circulating air duct into the biopolymer slurry to ensure that the circulating air duct extends to the bottom of the accommodating pool;
extending a filler conveying pipe into the biopolymer slurry to ensure that the filler conveying pipe extends to be close to the bottom of the accommodating pool, filling active fillers into the bottom of the accommodating pool through the filler conveying pipe, and extruding the biopolymer slurry out of the accommodating pool;
and pouring an isolation cover body on the upper layer of the active filler.
Optionally, before excavating the holding pool, the method further includes installing a guiding groove at the position of the building wall, and excavating along the guiding groove when excavating the holding pool.
Optionally, the step of excavating the containment pool comprises: sequentially excavating a plurality of accommodating pools along the length direction of the accommodating pools, after one accommodating pool is completely excavated, installing an isolation pile on the side edge of the accommodating pool, and then excavating the other accommodating pool on the other side of the isolation pile;
the step of filling with active filler is performed simultaneously with the step of excavating another holding tank, and the biopolymer slurry will be extruded through the upper part of the holding tank into another holding tank being excavated during the filling with active filler.
Optionally, before pouring the isolation cover, the isolation piles are taken out of the accommodation pools, so that the active fillers in the accommodation pools are connected into a whole.
Optionally, when the isolation cover body is poured, the one-way ventilation pipe is arranged above the active filler, and then the impermeable concrete is poured to form the isolation cover body.
The technical scheme of the invention has the following advantages:
1. the invention provides a biological filling permeable reactive barrier, comprising: the accommodating pool is filled with active filler; the circulating air ducts are embedded in the active filler, and a plurality of groups of circulating air ducts are arranged at intervals along the length direction of the accommodating pool; keep apart the lid, set up at the active filler upside, the circulation air duct runs through and keeps apart the lid setting. The active filler is filled in the containing tank and is used for degrading and treating pollutants in underground soil or underground water. Along with the long-term operation of reaction wall, the hole in the active filler can be blockked up by the gas that the degradation process produced, leads to the reaction wall to block up, and the pollution abatement ability descends, through regularly utilizing the circulation air duct to extract air to the active filler, reduces the degree of gas to the blocking of active filler, can also regularly pour into the filler cleaner into the active filler through the circulation air duct simultaneously, wash the filler, improve the passivation condition of filler to maintain the long-term steady operation of reaction wall.
2. The invention provides a construction method of a biological filling permeable reactive barrier, which is used for constructing the biological filling permeable reactive barrier of the invention and comprises the following steps: excavating the ground at the position of building a wall to form an accommodating pool, and continuously injecting biopolymer slurry into the accommodating pool in the excavating process; placing the circulating air duct into the biopolymer slurry to ensure that the circulating air duct extends to the bottom of the accommodating pool; extending a filler conveying pipe into the biopolymer slurry to ensure that the filler conveying pipe extends to be close to the bottom of the accommodating pool, filling active fillers into the bottom of the accommodating pool through the filler conveying pipe, and extruding the biopolymer slurry out of the accommodating pool; and pouring an isolation cover body on the upper layer of the active filler.
The method has the advantages that the biopolymer slurry is injected into the containing pool in the process of excavating the containing pool, the side wall and the edge of the containing pool are supported, and collapse of the edge of the containing pool in the excavating process can be effectively prevented. The reaction wall biopolymer slurry built in the prior art is slowly decomposed and can not be completely decomposed, the slurry can be filled in the pores of the active filler, so that the permeability of the active filler is reduced, the pollution treatment capability of the reaction wall is reduced, and meanwhile, a large amount of methane, nitrogen and other gases can be generated when the biopolymer slurry is absorbed by microorganisms in soil after being decomposed, the pores of the active filler can be blocked, so that the permeability coefficient of the reaction wall is continuously reduced when the reaction wall is used for a long time, and the pollutant remediation capability is continuously weakened. According to the construction method of the reaction wall, after the containing pool is excavated, the active filler is filled in a manner of inputting the active filler to the bottom of the containing pool and extruding the biopolymer slurry. The amount of the biopolymer slurry in the active filler after the reaction wall is built can be greatly reduced, the permeability of the active filler after the reaction wall is built can be improved, and meanwhile, the gas generated in the consumption process of the biopolymer slurry can be greatly reduced, so that the reaction wall can keep higher pollutant degradation capability during building and long-term use, and the reaction wall can be ensured to stably run for a long time.
3. The invention provides a construction method of a biological filling permeable reaction wall, comprising the following steps of: a plurality of holding ponds are excavated in proper order along holding pond length direction, and after one of them holds the pond excavation and finishes, hold pond side installation isolation pile, then another holding pond of opposite side excavation at isolation pile. Keep apart the stake with a plurality of ponds that hold through setting up to build in segments, make a plurality of ponds that hold can be under construction simultaneously, can shorten the construction cycle of reaction wall greatly, reduce construction cost.
4. The construction method of the biological filling permeable reactive barrier provided by the invention comprises the steps of arranging the one-way ventilating pipe above the active filler when the isolation cover body is poured, and then pouring the impermeable concrete to form the isolation cover body. One-way ventilation is realized by arranging the one-way breathable film or the one-way breathable valve on the one-way breathable pipe, so that gas can only flow outwards from the wall body, and the gas outside the wall body can not enter the wall body from the one-way breathable pipe. The gas guiding function is further enhanced by arranging the one-way ventilating pipe with one-way ventilation. Meanwhile, external rainwater and air are prevented from entering the active filler in the polluted or oxidized wall body.
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 structural view of an isolation pile provided in an embodiment of the present invention.
Fig. 2 is a schematic view of a step of arranging guide grooves provided in the embodiment of the present invention.
Fig. 3 is a schematic diagram of a step of excavating a housing pool provided in an embodiment of the present invention.
FIG. 4 is a schematic representation of the steps provided in an embodiment of the present invention for installing a circulating airway.
Fig. 5 is a schematic diagram of an active filler filling step provided in an embodiment of the present invention.
Fig. 6 is a schematic view of an adjacent containment pool excavation step provided in an embodiment of the present invention.
Fig. 7 is a schematic view of a biologically-loaded permeable reaction wall after withdrawal of a spacer pile provided in an embodiment of the present invention.
FIG. 8 is a schematic structural view of a bio-packed permeable reaction wall according to an embodiment of the present invention.
Description of reference numerals: 1. a holding tank; 2. an active filler; 3. circulating the gas guide pipe; 4. a circulating gas guide branch pipe; 5. an isolation cover body; 6. a one-way vent pipe; 7. a biopolymer slurry; 8. a guide groove; 9. isolating piles; 10. and a filler conveying pipe.
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", etc., 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 particular orientation, be constructed and operated in a particular 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 in specific cases to those skilled 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 1
Fig. 8 shows a biological filling permeable reactive barrier provided in this embodiment, which includes: the device comprises an accommodating pool 1, active filler 2 arranged in the accommodating pool 1, a circulating air duct 3 and an isolating cover body 5.
The receiving tank 1 is filled with an active filler 2 therein. Circulation air duct 3 buries underground in active filler 2, and circulation air duct 3 is provided with the multiunit along the length direction interval of holding pond 1. Keep apart lid 5 and set up 2 upsides at active filler, circulation air duct 3 runs through and keeps apart lid 5 and set up.
A plurality of circulating air guide branch pipes 4 are axially arranged on the circulating air guide pipe 3 at intervals, the circulating air guide branch pipes 4 are communicated with the circulating air guide pipe 3, and the circulating air guide branch pipes 4 at the same height are uniformly distributed along the axial direction of the circulating air guide pipe 3. The circulating air guide branch pipe is arranged in a downward inclined mode. Keep apart still to run through on the lid 5 and be provided with one-way permeability cell 6, one-way permeability cell 6 extends towards active filler 2 along vertical direction.
In order to improve the stability of the reaction wall in long-term operation and the precision degree of pollution control, a plurality of monitoring assemblies are embedded in the active filler 2. The monitoring group price is internally provided with monitoring equipment such as a microorganism electrode, a temperature sensor, a water level meter, a flow velocity velocimeter, a potentiometer probe, a PH composite electrode and the like so as to monitor parameters such as pH, temperature, groundwater level and flow velocity, oxidation-reduction potential, resistivity, permeability coefficient and the like in the active filler 2 in real time.
And the containing pool 1 is filled with active filler 2 for degrading and treating pollutants in underground soil or underground water. Along with the long-term operation of reaction wall, the hole in active filler 2 can be blockked up by the gas that the degradation process produced, lead to the pollution abatement ability decline of reaction wall, through the parameter that returns according to the monitoring of determine module, utilize circulation air duct 3 to bleed active filler 2, reduce the degree of blocking of gas to active filler 2, can also regularly inject biological enzyme, chemical cleaner, bacteriostat, filler cleaner etc. into active filler 2 through circulation air duct 3 simultaneously, wash the filler or improve the reaction environment of filler, improve the passivation condition of filler, in order to maintain the long-term steady operation of reaction wall.
Example 2
As shown in fig. 1 to 8, the construction method of a bio-packed permeable reactive barrier according to the present embodiment is used for constructing the bio-packed permeable reactive barrier according to example 1, and the bio-packed permeable reactive barrier is constructed in sections of 5 to 8m each, and the construction method of the reactive barrier includes the following steps:
the interval range and the construction position of each section of reaction wall are firstly determined before construction. In order to raise the vertical degree of the holding tank 1, the holding tank 1 is prevented from being inclined after being excavated. As shown in fig. 2, before the housing pool 1 is excavated, a guide groove 8 is installed at a position of a building wall, and the excavator is guided to perform excavation along the guide groove 8 when the housing pool 1 is excavated. As shown in fig. 3, a receiving pond 1 is formed by excavating the ground at the position of building a wall, and a biopolymer slurry 7 is continuously injected into the receiving pond 1 during the excavation. To support the trench walls of the excavated containment tank 1, as shown in fig. 4, the circulating gas-guide tube 3 is placed in the biopolymer slurry 7, ensuring that the circulating gas-guide tube 3 extends to the bottom of the containment tank 1. A plurality of monitoring components are pre-installed in different circulating air guide branch pipes 4 of the circulating air guide pipe 3. As shown in fig. 5, a filler conveying pipe and a cylindrical spacer pile 9 are inserted into the biopolymer slurry 7, and the filler conveying pipe is ensured to extend to be close to the bottom of the accommodation pool 1, and the active filler 2 is filled into the accommodation pool 1 through the filler conveying pipe. The active filler 2 is filled from the bottom of the containing pool 1 upwards through the filler conveying pipe 10, the first section containing pool 1 is filled with the active filler 2, and meanwhile, the biopolymer slurry is extruded out of the containing pool. After the biopolymer slurry 7 is extruded and filled with the active filler 2, the degradation process of the biopolymer slurry 7 remaining in the receiving tank 1 is accelerated by pumping out the biogel in the receiving tank 1 through the circulating gas-guide tube 3 and injecting a reaction enzyme solution. And finally, pouring an isolation cover body 5 on the upper layer of the active filler 2.
As shown in fig. 6, when a plurality of holding ponds 1 are excavated in sequence along the length direction of the holding pond 1, after one of the holding ponds 1 is excavated, an isolation pile 9 is installed on the side of the holding pond 1, different holding ponds 1 are isolated, and another holding pond 1 is excavated on the other side of the isolation pile while active fillers 2 are filled into the excavated holding pond 1. As shown in fig. 7, before pouring the isolation cover 5, the isolation piles 9 are taken out from the accommodation pools 1 to connect the active fillers 2 in the accommodation pools 1, and at this time, the biological glue is extracted and added into the enzyme solution. As shown in fig. 8, when the isolation cover body 5 is poured, the one-way ventilation pipe 6 is arranged above the active filler 2, and then the impermeable concrete is poured to form the isolation cover body 5. Through building impervious isolation lid 5 and setting up one-way permeability cell 6, prevent that iron powder oxidation and rainwater from pouring into on the one hand, on the other hand one-way permeability cell 6 can be in coordination with reaction wall internal gas with circulation air duct 3 and derive.
The construction method can save 40-60% of the usage amount of the biopolymer slurry 7, and the circulating gas guide pipe 3 can discharge more than 85% of pore gas in the reaction wall. By reducing the amount of the biopolymer slurry 7 and discharging the biopolymer slurry 7 when the active filler 2 is filled, the amount of bio-enzyme used to accelerate the degradation of the biopolymer slurry 7 can be greatly reduced, the construction cost can be reduced, and the degradation process of the biopolymer slurry 7 can be simplified. The biopolymer slurry 7 is decomposed and then changed into liquid with lower viscosity, more reaction enzymes still exist in the liquid decomposer and can be recycled, and after the biogel is extracted through the circulating air guide tube and the circulating air guide branch tube, enzyme solution is added and filled into the accommodating pool; then, the operation cycle of extraction and filling is continuously performed, and the liquid decomposition product with the reaction enzyme is recycled. The consumption of the biological enzyme is reduced, and the construction cost of the reaction wall is reduced. The circulating gas guide pipe 3 comprises a pipe body and circulating gas guide branch pipes which are obliquely arranged, and a detection assembly is further installed in the circulating gas guide branch pipes, so that the circulating gas guide pipe 3 can realize multiple functions of micro-bubble collection, injection of biological enzyme or cleaning agent, multi-phase extraction, on-line monitoring and the like.
The circulating gas-guide tube 3 exists in a form of a comprehensive vertical shaft, is simultaneously used as a main body to be connected with a plurality of inclined circulating gas-guide branch tubes used as branch pipelines, and has the functions of extraction, injection and gas guide. The arrangement coverage of the fishbone-shaped oblique branch pipeline is high, which is beneficial to the extraction of the biopolymer slurry 7 and the circulation of the enzyme preparation. After the circulation function of the enzyme preparation is finished, the enzyme preparation can be used as an injection well and an air guide well, and a filler cleaning agent can be injected into the permeable reaction wall through the circulating air guide pipe 3, so that the passivation condition of the reaction wall after long-time operation is improved. Meanwhile, the inclined branch pipeline is inclined at a special angle and is easy to enter and difficult to exit, the pipe pore is designed to be convenient to collect micro bubbles in the filler of the reaction wall as a gas guide well, gas generated by microorganisms is led out, and the reduction of the permeability coefficient of the permeable reaction wall is inhibited. It can also be used as a multiphase extraction well to extract liquid or gas in the wall and further discharge the gas, thereby ensuring the permeability coefficient of the wall.
The detection assembly for on-line monitoring is arranged in the circulating gas guide branch pipe, so that the construction quality of the permeable reaction wall can be known, and the state of the permeable reaction wall can be monitored during operation. Meanwhile, a monitoring well does not need to be newly built, most of the range of the wall body can be covered, and the well building cost is saved.
As shown in fig. 1, the cylindrical spacer pile 9 has winglets at the tangential position with respect to the trench wall to cut into the soil layer, thereby enhancing the barrier effect and preventing the loss of material. The one-way vent pipe 6 is arranged in the water-proof isolation cover body 5, so that the gas guiding function is further strengthened. Meanwhile, external rainwater and air are prevented from entering the active filler 2 in the polluted or oxidized wall body. Because the construction process is carried out in a segmented mode, all materials can be modularized, the construction period is shortened, and the cost is reduced.
In the operation stage of the reaction wall, the one-way vent pipe 6 and the circulating gas guide pipe 3 cooperate to lead out gas continuously generated by microorganisms in the reaction wall. Detection module real-time supervision groundwater pollutant concentration, after monitoring system judges that the reaction wall leads to the passivation because of long-time operation, accessible circulation air duct 3 pours into the filler cleaner into the osmotic reaction wall in, improves the passivation condition, extension operating duration.
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 bio-packed permeable reaction wall comprising:
the containing pool (1) is filled with active filler (2);
the circulating air ducts (3) are embedded in the active filler (2), and a plurality of groups of circulating air ducts (3) are arranged at intervals along the length direction of the accommodating pool (1);
the isolation cover body (5) is arranged on the upper side of the active filler (2), and the circulating air duct (3) penetrates through the isolation cover body (5).
2. The biological filling permeable reaction wall according to claim 1, wherein the circulating gas guide pipe (3) is communicated with a plurality of circulating gas guide branch pipes (4) at intervals along the axial direction.
3. The biologically-loaded permeable reaction wall of claim 2, wherein the circulating gas manifold is inclined downwardly.
4. The biologically-loaded permeable reaction wall according to any one of claims 1 to 3, wherein the isolation cover (5) is further provided with one-way gas permeable tubes (6) therethrough, and the one-way gas permeable tubes (6) extend towards the active filler (2).
5. The biologically-loaded permeable reaction wall according to any one of claims 1 to 3, wherein a plurality of monitoring modules are embedded in the active filler (2).
6. A method for constructing a bio-packed permeable reactive barrier according to any one of claims 1 to 5, comprising the steps of:
excavating the ground at the position of building a wall to form an accommodating pool (1), and continuously injecting biopolymer slurry (7) into the accommodating pool (1) in the excavating process;
placing the circulating gas-guide tube (3) into the biopolymer slurry (7) to ensure that the circulating gas-guide tube (3) extends to be close to the bottom of the accommodating pool (1);
a filler conveying pipe is extended into the biopolymer slurry (7) to ensure that the filler conveying pipe extends to be close to the bottom of the accommodating pool (1), active fillers (2) are filled at the bottom of the accommodating pool through the filler conveying pipe, and the biopolymer slurry (7) is extruded out of the accommodating pool (1);
and pouring an isolation cover body (5) on the upper layer of the active filler (2).
7. The method for constructing a bio-filled permeable reaction wall according to claim 6, further comprising installing a guide groove (8) at a site of the construction wall before excavating the housing pool (1), and excavating along the guide groove (8) when excavating the housing pool (1).
8. The method for constructing a bio-filled permeable reaction wall according to claim 6 or 7, wherein the step of excavating the receiving tank (1) comprises: sequentially excavating a plurality of accommodating pools (1) along the length direction of the accommodating pools (1), after one accommodating pool (1) is excavated, installing an isolation pile (9) on the side edge of the accommodating pool (1), and excavating the other accommodating pool (1) on the other side of the isolation pile;
the step of filling the active filler (2) is performed simultaneously with the step of excavating the other containment pool (1), and when filling the active filler (2), the biopolymer slurry (7) will be extruded through the top of the containment pool into the other excavation containment pool (1).
9. The method for constructing a biologically-filled permeable reactive wall according to claim 8, wherein the spacer piles (9) are removed from the receiving tanks (1) before the casting of the spacer covers (5) to integrate the active fillers (2) in the plurality of receiving tanks (1).
10. The method for constructing a bio-packed permeable reactive wall according to claim 6 or 7, wherein the insulation cover body (5) is formed by placing the one-way ventilation pipe (6) above the active filler (2) and then placing the impermeable concrete when placing the insulation cover body (5).
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| CN202111647797.0A CN114314813A (en) | 2021-12-29 | 2021-12-29 | Biological filling permeable reaction wall and construction method thereof |
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| CN202111647797.0A CN114314813A (en) | 2021-12-29 | 2021-12-29 | Biological filling permeable reaction wall and construction method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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