CN118084108A - Construction method of permeable reactive barrier for groundwater treatment - Google Patents
Construction method of permeable reactive barrier for groundwater treatment Download PDFInfo
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- CN118084108A CN118084108A CN202410498650.7A CN202410498650A CN118084108A CN 118084108 A CN118084108 A CN 118084108A CN 202410498650 A CN202410498650 A CN 202410498650A CN 118084108 A CN118084108 A CN 118084108A
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- 239000003673 groundwater Substances 0.000 title claims abstract description 50
- 230000004888 barrier function Effects 0.000 title claims abstract description 42
- 238000010276 construction Methods 0.000 title claims abstract description 37
- 239000003814 drug Substances 0.000 claims abstract description 345
- 238000002347 injection Methods 0.000 claims abstract description 125
- 239000007924 injection Substances 0.000 claims abstract description 125
- 230000007246 mechanism Effects 0.000 claims abstract description 77
- 239000000126 substance Substances 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 78
- 230000005540 biological transmission Effects 0.000 claims description 51
- 238000005070 sampling Methods 0.000 claims description 37
- 238000002156 mixing Methods 0.000 claims description 35
- 229940079593 drug Drugs 0.000 claims description 32
- 238000003756 stirring Methods 0.000 claims description 28
- 239000003344 environmental pollutant Substances 0.000 claims description 25
- 231100000719 pollutant Toxicity 0.000 claims description 25
- 238000005192 partition Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 10
- 230000002265 prevention Effects 0.000 claims description 6
- 230000003028 elevating effect Effects 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 abstract description 12
- 239000000463 material Substances 0.000 description 17
- 230000008569 process Effects 0.000 description 8
- 238000007599 discharging Methods 0.000 description 7
- 239000000945 filler Substances 0.000 description 6
- 230000007306 turnover Effects 0.000 description 4
- 230000035699 permeability Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000003895 groundwater pollution Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 238000002144 chemical decomposition reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000000857 drug effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a construction method of a permeable reaction wall for groundwater treatment, which belongs to the technical field of groundwater treatment and comprises the following steps: paying off according to the design data, and determining the construction position of the permeable reactive barrier; excavating a chemical tank main body at a construction position of a permeable reaction wall, and performing well construction operation at the bottom of the chemical tank main body to form two rows of chemical injection well units which are arranged in parallel and spaced at a certain distance; a medicine feeding mechanism is arranged at the upper part of the medicine tank main body, and medicine is injected into the medicine tank main body according to the requirement; the lifting mechanism is arranged in the medicine tank main body and is used for respectively extending into the medicine pipe main body in each medicine injection well main body in the first row of medicine injection well units and the second row of medicine injection well units or removing the medicine pipe main body extending into the medicine injection well main body.
Description
Technical Field
The invention relates to the technical field of groundwater treatment, in particular to a construction method of a permeable reaction wall for groundwater treatment.
Background
The permeable reaction wall is formed by constructing a reaction wall composed of reaction materials in the flowing direction of the polluted groundwater, and removing pollutants in the groundwater through the adsorption, precipitation, chemical degradation or biodegradation of the reaction materials. Usually under natural hydraulic gradient, the groundwater pollution plume passes through the reaction medium, the physical, chemical or biological action of the pollutant and the medium is blocked or removed, and the treated groundwater flows out from the other side of the permeable reaction wall.
Conventional permeable reactive barriers suffer from the following drawbacks: 1. the treatment depth is limited, the treatment depth must be combined with engineering construction, the filling of permeable reactive barrier wall materials is needed to be carried out through mechanical grooving, the filling materials are filled after molding, the treatment depth is limited by excavation machinery, the maximum depth is only about ten meters, the treatment depth is mainly cohesive soil, and the permeable reactive barrier wall material is mainly sandy soil, collapse is easily caused by too deep excavation of an aquifer, so that the permeable reactive barrier wall material cannot be applied when the pollutant depth is large; 2. the filler of the permeable reactive barrier wall is difficult to replace, and the filler in the permeable reactive barrier wall can not be added at one time to meet the requirements, and the main reasons include: 1) The reaction amount cannot be completed by one-time addition; 2) The filler fails after a certain time; 3) The wall is affected by upstream pollutants, so that the pollution is aggravated, the reactants are fully reacted, and the wall is invalid. When the permeable reactive barrier is replaced, the permeable reactive barrier is certainly not different from the permeable reactive barrier which is built again, and the cost is high; 3. the packing material is highly demanding and has limited contaminants that can be handled. Because of the difficulty in replacing the filler, the design of the filler material is mostly slow-release material when the permeable reactive barrier is designed, and some filler materials with higher release speed are often abandoned, so that the pollutants capable of being treated are limited, and therefore, the design of a construction method of the permeable reactive barrier for groundwater treatment is necessary.
Disclosure of Invention
The invention aims to provide a construction method of a permeable reactive barrier for groundwater treatment, which aims to solve the problems in the prior art.
In order to solve the technical problems, the invention provides the following technical scheme: the construction method of the permeable reactive barrier for groundwater treatment comprises the following steps:
S1: paying off according to the design data, and determining the construction position of the permeable reactive barrier;
S2: excavating a medicament tank main body at a construction position of a permeable reactive barrier, performing well construction operation at the bottom of the medicament tank main body to form two rows of parallel arranged medicament injection well units with a certain distance, wherein each medicament injection well unit consists of a plurality of medicament injection well main bodies arranged with a certain distance, the first row of medicament injection well units are positioned at a high groundwater level of the construction position of the permeable reactive barrier, the second row of medicament injection well units are positioned at a low groundwater level of the construction position of the permeable reactive barrier, and the medicament injection well main bodies of the first row of medicament injection well units and the medicament injection well main bodies of the second row of medicament injection well units are staggered;
S3: a closed cover plate is additionally arranged at the top of the medicament tank main body, a medicament supply mechanism is arranged at the upper part of the closed cover plate, a medicament distribution box is also arranged in the medicament tank main body, the medicament distribution box is communicated with the medicament supply mechanism, and the medicament supply mechanism injects medicament into the medicament distribution box according to the requirement;
S4: a lifting mechanism which is used for respectively extending into the medicine pipe body into each medicine injection well body in the first row of medicine injection well units and the second row of medicine injection well units or removing the medicine pipe body extending into the medicine injection well body is arranged in the medicine tank body, when groundwater is treated, the lifting mechanism drives the chemical tube main body to move into groundwater collected in the chemical injection well main body, and the chemical tube main body is communicated with the chemical dispensing box to treat pollutants in the groundwater in the chemical injection well main body.
In a further embodiment, a rotating mechanism for driving the medicine tube bodies in all the medicine injection well bodies in the same row to rotate and an up-down turning mechanism matched with the medicine tube bodies are arranged in the medicine tank bodies;
The rotating mechanism comprises hollow rotating pipes, a first transmission mechanism and a driving mechanism, wherein a plurality of the hollow rotating pipes are arranged in the medicament tank main body and are in one-to-one correspondence connection with the medicament pipe main body, the first transmission mechanism and the driving mechanism are both arranged in the medicament tank main body, and a plurality of the hollow rotating pipes are arranged on the first transmission mechanism and are in one-to-one correspondence connection with the medicament pipe main body;
the up-down turning mechanism comprises a second transmission mechanism and turning blades, and the turning blades are arranged on the second transmission mechanism.
In a further embodiment, the medicine tube main body comprises an upper conduit arranged at the inner upper part of the medicine injection well main body and a lower conduit arranged at the inner lower part of the medicine injection well main body, the upper conduit and the lower conduit are connected through a middle conduit, a plurality of medicine holes are formed in the upper conduit and the lower conduit, and a plurality of mixing blades are respectively arranged on one side of the surface of the upper conduit and the other side of the surface of the lower conduit from top to bottom.
In a further embodiment, the medicine tank main body is internally provided with a side anti-seepage partition board surrounding the periphery of the medicine dispensing box, the bottom of the medicine dispensing box is provided with a bottom anti-seepage partition board, a mounting plate is arranged below the bottom anti-seepage partition board, a plurality of medicine discharging pipes corresponding to the hollow rotating pipes one by one are arranged between the mounting plate and the bottom anti-seepage partition board, the medicine discharging pipes are provided with valves, the bottoms of the medicine discharging pipes are connected with communicating pipes, and the bottoms of the communicating pipes penetrate through the hollow rotating pipes and extend into the upper guide pipes.
In a further embodiment, the lifting mechanism comprises lifting chambers respectively arranged at one sides of the two side seepage-proofing partition boards, lifting cylinders are respectively arranged in the lifting chambers, a transmission frame is arranged below the mounting plate, lifting frames are arranged at two ends of the transmission frame, the two lifting frames respectively extend into the adjacent lifting chambers, and output ends of the two lifting cylinders are respectively connected with the adjacent lifting frames.
In a further embodiment, the first transmission mechanism comprises a plurality of base plates arranged in the transmission frame, a rotating seat is arranged on each base plate, a hollow rotating pipe is arranged on each rotating seat, rotating wheels are fixedly sleeved on the hollow rotating pipes, transmission wheels are arranged between adjacent rotating wheels through transmission shafts, the transmission wheels are meshed with the adjacent rotating wheels, the driving mechanism comprises a driving chamber arranged in one of the lifting frames, a driving motor is arranged in the driving chamber, the output end of the driving motor is connected with a driving wheel, and the driving wheel is meshed with the adjacent rotating wheels.
In a further embodiment, the second transmission mechanism comprises connecting rods arranged at two ends of the bottom of the substrate, the bottoms of the two connecting rods extend into the drug injection well main body and are connected with the mounting frames, the two mounting frames are arranged at two sides of the upper guide pipe, the tops of the two mounting frames are connected through positioning rings, through holes matched with the upper guide pipe are formed in the positioning rings, the second bevel gears are arranged at the lower parts of the mounting frames through rotating shafts, the first bevel gears meshed with the two second bevel gears are fixedly sleeved on the middle guide pipe, and the turning blades are fixedly sleeved on the rotating shafts;
in the initial state, one of the turning blades is upwards arranged on one side of the surface of the upper conduit, on which the mixing blade is not arranged, and the other turning blade is downwards arranged on one side of the surface of the lower conduit, on which the mixing blade is not arranged;
under the operating condition, the medicament tube main body rotates, the mixing blade on one side of the surface of the upper conduit rotates to one side of the turning blade which is arranged upwards, at the moment, the turning blade downwards turns to one side of the surface of the lower conduit, which is not provided with the mixing blade, the mixing blade on the other side of the surface of the lower conduit rotates to one side of the turning blade which is arranged downwards, at the moment, the turning blade upwards turns to one side of the surface of the upper conduit, which is not provided with the mixing blade, and the circulation is performed.
In a further embodiment, a controller is arranged in one lifting chamber, water level sensors are arranged on the upper portion and the lower portion in the medicine distribution box, a sampling head is arranged in the medicine injection well main body, the water level sensors are electrically connected with the controller, a sampling pump is arranged on the upper portion of the sealing cover plate, the water inlet end of the sampling pump is connected with the sampling head through a sampling pipe, and the water outlet end of the sampling pump is connected with an external sampling water tank through a drain pipe.
In a further embodiment, one of the lifting chambers is further provided with a stirring motor, the output end of the stirring motor extends into the dispensing box to be connected with a stirring shaft, and the stirring shaft is provided with a plurality of stirring blades.
In a further embodiment, the medicine feeding mechanism comprises a medicine feeding box arranged above the closed cover plate, a medicine guiding pipe extending into the medicine dispensing box is arranged on the medicine feeding box, a medicine guiding pump is arranged on the medicine guiding pipe, and the medicine guiding pump is electrically connected with the water level sensor and the controller.
Compared with the prior art, the invention has the following beneficial effects:
1. The depth of the two rows of chemical injection well bodies which are arranged in a staggered manner is not limited, so that the problem of the treatment depth in the treatment process of the traditional permeable reactive barrier is solved, meanwhile, a large construction space is not required, part of underground water is collected and pollutants in water are treated through the row of chemical injection well bodies with high water level, part of the underground water permeated in the process of collecting and treating the pollutants in the water is collected and treated through the row of chemical injection well bodies with low water level, and the treatment quality of the underground water is improved;
2. The problem that the traditional permeable reactive barrier material is difficult to replace is solved by injecting the medicament into the main body of the medicament injection well; according to different pollutants in underground water, the types of applicable medicaments are adjusted in the medicament supply box, the adaptability of the permeable reaction wall is enhanced, meanwhile, the medicament replacement and injection speed is high, more medicaments can be applicable, and medicaments with shorter conventional reaction time can also be applicable; the water treated in the main body of the medicine injection well is taken out and observed in the later period, and the addition amount and the addition concentration of the medicine are adjusted according to the observation result, so that the situation that the traditional permeable reaction wall cannot be adjusted after deviation occurs after the traditional permeable reaction wall is built is avoided;
3. the first transmission mechanism is driven to work through the driving mechanism, the medicine pipe main bodies in the medicine injection well main bodies are driven by the hollow rotating pipes to synchronously rotate, the mixing blades are matched, water in the medicine injection well main bodies and injected medicines are mixed, in the mixing process, the second transmission mechanism is driven to work through the rotation of the medicine pipe main bodies, the turning blades are enabled to turn over, turbulent flow treatment is carried out on water at the lower part in the medicine injection well main bodies and water at the upper part in the medicine injection well main bodies, water in the medicine injection well main bodies and injected medicines are enabled to fully react, pollutants in the water in the medicine injection well main bodies are treated, and the treatment efficiency of groundwater pollutants is improved.
Drawings
FIG. 1 is a flow chart of a construction method of the present invention;
FIG. 2 is a schematic view of the mounting structure of the medicine tank main body and the medicine injection well main body of the present invention;
FIG. 3 is a cross-sectional view of the drug reservoir body and drug injection well body of the present invention;
FIG. 4 is a schematic view showing the internal structure of the medicine tank main body of the present invention;
FIG. 5 is a schematic view of the mounting structure of the up-down turning mechanism of the present invention;
FIG. 6 is a schematic view of the main body structure of the medicament tube of the present invention;
FIG. 7 is a schematic view of the placement of a drug tank body and two rows of drug injection wells according to the present invention;
the reference numerals are: the medicine tank main body 1, the medicine injection well main body 2, the closing cover plate 3, the medicine supply box 4, the medicine guide tube 5, the medicine guide pump 6, the side seepage-proofing partition 7, the bottom seepage-proofing partition 8, the medicine distribution box 9, the mounting plate 10, the transmission frame 11, the medicine guide tube main body 12, the base plate 13, the rotating seat 14, the hollow rotating tube 15, the rotating wheel 16, the transmission shaft 17, the driving wheel 18, the driving chamber 19, the driving motor 20, the driving wheel 21, the communicating tube 22, the medicine discharge tube 23, the valve 24, the lifting chamber 25, the controller 26, the stirring motor 27, the stirring shaft 28, the stirring blade 29, the water level sensor 30, the connecting rod 31, the mounting frame 32, the positioning ring 33, the upper guide tube 34, the middle guide tube 35, the lower guide tube 36, the medicine hole 37, the mixing blade 38, the first bevel gear 39, the rotating shaft 40, the second bevel gear 41, the collar 42, the turning blade 43, the sampling head 44, the lifting cylinder 45 and the lifting frame 46.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the invention.
Referring to fig. 1 to 7, the present invention provides a technical solution: the construction method of the permeable reactive barrier for groundwater treatment comprises the following steps:
S1: paying off according to design data, and determining the construction position of a permeable reactive barrier, wherein the permeable reactive barrier is constructed at the downstream of the groundwater pollution plume and is perpendicular to the groundwater flow and the migration path of the pollution plume;
S2: excavating a medicament tank main body 1 at a construction position of a permeable reactive barrier, performing well construction operation at the bottom of the medicament tank main body 1 to form two rows of parallel arranged medicament injection well units with a certain distance, wherein each medicament injection well unit consists of a plurality of medicament injection well main bodies 2 arranged at a certain distance, the first row of medicament injection well units are positioned at a high groundwater level of the construction position of the permeable reactive barrier, the second row of medicament injection well units are positioned at a low groundwater level of the construction position of the permeable reactive barrier, the medicament injection well main bodies 2 of the first row of medicament injection well units and the medicament injection well main bodies 2 of the second row of medicament injection well units are arranged in a staggered manner, and one of the medicament injection well main bodies 2 of the second row of medicament injection well units is positioned between two adjacent medicament injection well main bodies 2 of the first row of medicament injection well units;
s3: a closed cover plate 3 is additionally arranged at the top of the medicament tank main body 1, a medicament supply mechanism is arranged at the upper part of the closed cover plate 3, a medicament dispensing box 9 is also arranged in the medicament tank main body 1, the medicament dispensing box 9 is communicated with the medicament supply mechanism, and the medicament supply mechanism injects medicament into the medicament dispensing box 9 according to requirements;
Wherein, the medicine amount in the medicine dispensing box 9 is detected by the water level sensor 30, when the lower water level sensor 30 senses that the medicine amount in the medicine dispensing box 9 is lower than a set value, the controller 26 transmits a signal to the medicine guide pump 6, and at the moment, the medicine guide pump 6 is opened to inject medicine into the medicine dispensing box 9; in different periods of groundwater treatment, an operator is matched with a sampling pipe and a sampling head 44 through a sampling pump, groundwater in the medicine injection well main body 2 is conveyed to a sampling water tank through a drain pipe, the operator detects the groundwater in the sampling water tank, corresponding medicines are prepared according to pollutant components in the water, then the medicines are injected into a medicine distribution box 9, injection of different medicines is carried out according to different requirements of the pollutant components in the water, and the operator can sample the groundwater in the medicine injection well main body 2 every two months;
S4: the lifting mechanism is arranged in the medicine tank main body 1 and is used for respectively extending the medicine pipe main body 12 into each medicine injection well main body 2 in the first row of medicine injection well units and the second row of medicine injection well units or removing the medicine pipe main body 12 extending into the medicine injection well main body 2, when groundwater is treated, the lifting mechanism drives the medicine pipe main body 12 to move into groundwater collected in the medicine injection well main body 2, the medicine pipe main body 12 is communicated with the medicine distribution box 9, and pollutants in the groundwater in the medicine injection well main body 2 are treated.
A rotating mechanism for driving the medicine tube main bodies 12 in all the medicine injection well main bodies 2 in the same row to rotate and an up-down stirring mechanism matched with the medicine tube main bodies 12 are arranged in the medicine tank main bodies 1, the medicine tube main bodies 12 are driven to rotate through the rotating mechanism, and the up-down stirring mechanism is matched with the medicine tube main bodies, so that water in the medicine injection well main bodies 2 fully reacts with injected medicines, and pollutants in the water in the medicine injection well main bodies 2 are treated;
The rotating mechanism comprises hollow rotating pipes 15, first transmission mechanisms and driving mechanisms, wherein a plurality of hollow rotating pipes 15 are arranged in the medicament tank main body 1 and are in one-to-one correspondence connection with the medicament pipe main bodies 12, the first transmission mechanisms and the driving mechanisms are all arranged in the medicament tank main body 1, a plurality of hollow rotating pipes 15 are arranged on the first transmission mechanisms and are in one-to-one correspondence connection with the medicament pipe main bodies 12, and the driving mechanisms drive the first transmission mechanisms to work so that the hollow rotating pipes 15 drive the medicament pipe main bodies 12 to rotate;
The up-down turning mechanism comprises a second transmission mechanism and turning blades 43, the turning blades 43 are arranged on the second transmission mechanism, and the medicament tube main body 12 rotates to drive the second transmission mechanism to work, so that the turning blades 43 turn over.
According to the technical scheme, the medicine supply mechanism is used for injecting prepared medicines into the medicine dispensing box 9, the medicines in the medicine dispensing box 9 are periodically injected into the medicine injection well main body 2 through the medicine pipe main body 12, the medicine pipe main body 12 is moved into underground water collected in the medicine injection well main body 2 through the lifting mechanism, the first transmission mechanism is driven to work through the driving mechanism, the medicine pipe main bodies 12 in the medicine injection well main body 2 are driven by the hollow rotation pipes 15 to synchronously rotate, the mixing blades 38 are matched, the water in the medicine injection well main body 2 and the injected medicines are mixed, in the mixing process, the second transmission mechanism is driven to work through the rotation of the medicine pipe main body 12, the turning blades 43 are turned over, the water at the lower part in the medicine injection well main body 2 and the water at the upper part in the medicine injection well main body 2 are subjected to turbulent flow treatment, the water in the medicine injection well main body 2 is fully reacted with the injected medicines, and pollutants in the water in the medicine injection well main body 2 are treated, and the period of the medicines in the medicine dispensing box 9 injected into the medicine injection well main body 2 through the medicine pipe main body 12 can be 10 days;
The interval between every two injection well main bodies 2 is determined according to the permeability of an aquifer, the in-situ stirring equipment is adopted for stirring the soil at the bottom of a region with poor permeability of the aquifer, the permeability of the aquifer is increased, a hydraulic aggregation region is formed, and pollutants are collected, so that a better treatment effect is achieved, part of underground water is collected and treated by one row of injection well main bodies 2 with high water level, part of underground water permeated in the process of collecting and treating pollutants in water is collected and treated by one row of injection well main bodies 2 with low water level, and the treatment quality of the underground water is improved.
In a further embodiment, the medicine tube main body 12 includes an upper conduit 34 disposed at an upper portion in the medicine injection well main body 2 and a lower conduit 36 disposed at a lower portion in the medicine injection well main body 2, the upper conduit 34 and the lower conduit 36 are connected through a middle conduit 35, a plurality of medicine holes 37 are formed in each of the upper conduit 34 and the lower conduit 36, and a plurality of mixing blades 38 are respectively disposed on one side of the surface of the upper conduit 34 and the other side of the surface of the lower conduit 36 from top to bottom.
Through the above technical scheme, the medicament in the dispensing box 9 is discharged through the medicament holes 37 on the upper conduit 34 and the lower conduit 36, wherein the medicament holes 37 are provided with one-way valves, and water in the medicine injection well main body 2 can not flow back into the medicament tube main body 12 through the medicament holes 37 through the one-way valves.
In a further embodiment, a side anti-seepage partition 7 surrounding the periphery of the medicine preparation box 9 is arranged in the medicine tank main body 1, a bottom anti-seepage partition 8 is arranged at the bottom of the medicine preparation box 9, a mounting plate 10 is arranged below the bottom anti-seepage partition 8, a plurality of medicine discharging pipes 23 which are in one-to-one correspondence with the hollow rotating pipes 15 are arranged between the mounting plate 10 and the bottom anti-seepage partition 8, a valve 24 is arranged on each medicine discharging pipe 23, a communicating pipe 22 is connected at the bottom of each medicine discharging pipe 23, and the bottom of each communicating pipe 22 penetrates through the hollow rotating pipe 15 and stretches into the upper guide pipe 34.
Through above-mentioned technical scheme, prevent seepage control through side prevention baffle 7 and bottom prevention of seepage baffle 8 to medicament groove main part 1, prevent that the medicament from oozing to all around and bottom, cause the waste of medicament, store the medicament through dosing tank 9, when the medicament is injected into injection well main part 2 to the needs, valve 24 opens, and the medicament in the dosing tank 9 flows to communicating pipe 22 through arranging the pencil 23, and then flows into upper guide 34.
In a further embodiment, the lifting mechanism comprises lifting chambers 25 respectively arranged on one sides of the two side anti-seepage partition plates 7, lifting cylinders 45 are respectively arranged in the two lifting chambers 25, a transmission frame 11 is arranged below the mounting plate 10, lifting frames 46 are arranged at two ends of the transmission frame 11, the two lifting frames 46 respectively extend into the adjacent lifting chambers 25, and the output ends of the two lifting cylinders 45 are respectively connected with the adjacent lifting frames 46.
Through the above technical scheme, promote crane 46 through lift cylinder 45 and remove in lift chamber 25, and then drive transmission frame 11 reciprocates, conveniently move into the groundwater that gathers in the injection well main part 2 with the chemical pipe main part 12 when carrying out the mixed operation to the water injection agent in the injection well main part 2 and with the chemical that pours into, shift out the chemical pipe main part 12 after above-mentioned work finishes for chemical pipe main part 12 can not soak in groundwater for a long time, lift cylinder 45 and controller 26 electric connection.
In a further embodiment, the first transmission mechanism comprises a plurality of base plates 13 arranged in the transmission frame 11, a rotating seat 14 is arranged on each base plate 13, a hollow rotating tube 15 is arranged on each rotating seat 14, rotating wheels 16 are fixedly sleeved on each hollow rotating tube 15, a transmission wheel 18 is arranged between every two adjacent rotating wheels 16 through a transmission shaft 17, the transmission wheels 18 are meshed with the adjacent rotating wheels 16, the driving mechanism comprises a driving chamber 19 arranged in one of the lifting frames 46, a driving motor 20 is arranged in the driving chamber 19, the output end of the driving motor 20 is connected with a driving wheel 21, and the driving wheel 21 is meshed with the adjacent rotating wheels 16.
Through the above technical scheme, the driving motor 20 drives the driving wheel 21 to rotate, and then drives one of the adjacent rotating wheels 16 to rotate, and then drives the hollow rotating tube 15 in the rotating wheel 16 to rotate on the rotating seat 14, and then drives the transmission shaft 17 to rotate through the adjacent driving wheel 18, and then drives other hollow rotating tubes 15 to rotate on the corresponding rotating seat 14, and then drives the medicament tube main body 12 to rotate through the hollow rotating tube 15.
In a further embodiment, the second transmission mechanism comprises connecting rods 31 arranged at two ends of the bottom of the base plate 13, the bottoms of the two connecting rods 31 extend into the drug injection well main body 2 and are connected with mounting frames 32, the two mounting frames 32 are arranged at two sides of the upper guide tube 34, the tops of the two mounting frames 32 are connected through positioning rings 33, through holes matched with the upper guide tube 34 are formed in the positioning rings 33, a second bevel gear 41 is arranged at the lower part of the mounting frame 32 through a rotating shaft 40, a first bevel gear 39 meshed with the two second bevel gears 41 is fixedly sleeved on the middle guide tube 35, and a turning blade 43 is fixedly sleeved on the rotating shaft 40;
In the initial state, one of the turning blades 43 is arranged upwards on one side of the surface of the upper conduit 34, on which the mixing blade 38 is not mounted, and the other turning blade 43 is arranged downwards on one side of the surface of the lower conduit 36, on which the mixing blade 38 is not mounted;
In the operating state, the medicine tube main body 12 rotates, the mixing blade 38 on the surface side of the upper duct 34 rotates to the side of the turning blade 43 arranged upward, at this time, the turning blade 43 turns downward to the side of the lower duct 36 on which the mixing blade 38 is not mounted, the mixing blade 38 on the other side of the surface of the lower duct 36 rotates to the side of the turning blade 43 arranged downward, at this time, the turning blade 43 turns upward to the side of the upper duct 34 on which the mixing blade 38 is not mounted, and the cycle is thus performed.
Through the above technical scheme, the hollow rotary tube 15 drives the medicament tube main body 12 to rotate, so that the upper guide tube 34, the middle guide tube 35 and the lower guide tube 36 integrally rotate, and then drive the first bevel gear 39 to rotate, and then drive the rotary shaft 40 to rotate through the second bevel gear 41, and then drive the turning blades 43 to turn over, and in the turning process of the turning blades 43, the two turning blades 43 cannot collide with the mixing blades 38 on the surfaces of the upper guide tube 34 and the lower guide tube 36.
In a further embodiment, a controller 26 is arranged in one of the lifting chambers 25, water level sensors 30 are arranged at the upper part and the lower part in the dispensing box 9, a sampling head 44 is arranged in the medicine injection well main body 2, the water level sensors 30 are electrically connected with the controller 26, a sampling pump is arranged at the upper part of the closed cover plate 3, the water inlet end of the sampling pump is connected with the sampling head 44 through a sampling pipe, and the water outlet end of the sampling pump is connected with the sampling water tank through a drain pipe.
Through the above technical scheme, the water level sensor 30 detects the medicine amount in the medicine dispensing box 9, when the lower water level sensor 30 senses that the medicine amount in the medicine dispensing box 9 is lower than a set value, the controller 26 transmits a signal to the medicine guide pump 6, the medicine guide pump 6 is opened at the moment, medicine is injected into the medicine dispensing box 9, and when the upper water level sensor 30 senses that the medicine amount in the medicine dispensing box 9 reaches the set value, the controller 26 transmits a signal to the medicine guide pump 6, and the medicine guide pump 6 is closed at the moment; in different periods of groundwater treatment, operating personnel cooperate with a sampling pipe and a sampling head 44 through a sampling pump, groundwater in the medicine injection well main body 2 is conveyed to a sampling water tank through a drain pipe, the operating personnel detect the groundwater in the sampling water tank, corresponding medicines are prepared according to pollutant components in the water, then the medicines are injected into a medicine distribution box 9, injection of different medicines is carried out according to different requirements of the pollutant components in the water, a controller 26 transmits a signal to a valve 24 during medicine injection, the medicines in the medicine distribution box 9 flow to a communicating pipe 22 through a medicine discharge pipe 23 and then flow into a medicine pipe main body 12, and medicines with set capacities are injected into the medicine injection well main body 2.
In a further embodiment, a stirring motor 27 is further arranged in one of the lifting chambers 25, the output end of the stirring motor 27 extends into the dispensing box 9 and is connected with a stirring shaft 28, and a plurality of stirring blades 29 are arranged on the stirring shaft 28.
Through above-mentioned technical scheme, drive (mixing) shaft 28 through agitator motor 27 and rotate, and then drive stirring vane 29 and rotate, stir the operation to the medicament in the medicine box 9, prevent that the medicament in the medicine box 9 from not flowing into in the medicament pipe main part 12 for a long time and producing the sediment, influence the drug effect.
In a further embodiment, the medicine feeding mechanism comprises a medicine feeding box 4 arranged above the closed cover plate 3, a medicine guiding pipe 5 extending into the medicine dispensing box 9 is arranged on the medicine feeding box 4, a medicine guiding pump 6 is arranged on the medicine guiding pipe 5, and the medicine guiding pump 6 is electrically connected with the water level sensor 30 and the controller 26.
Through above-mentioned technical scheme, cooperate with the medicine guide pump 6 through the medicine guide pipe 5, conveniently inject the medicament that supplies in the medical kit 4 into the medicine box 9.
Working principle: the medicine which is configured in the medicine supply box 4 is injected into the medicine dispensing box 9 through the medicine guiding pipe 5 and the medicine guiding pump 6, the medicine amount in the medicine dispensing box 9 is detected through the water level sensor 30, when the lower water level sensor 30 senses that the medicine amount in the medicine dispensing box 9 is lower than a set value, the controller 26 transmits a signal to the medicine guiding pump 6, the medicine guiding pump 6 is opened at the moment, the medicine is injected into the medicine dispensing box 9, when the upper water level sensor 30 senses that the medicine amount in the medicine dispensing box 9 reaches the set value, the controller 26 transmits the signal to the medicine guiding pump 6, the medicine guiding pump 6 is closed at the moment, and in different periods of groundwater treatment, operators pass through the sampling pump and the sampling pipe, The sampling head 44 is matched with the medicine injection well main body 2, the underground water in the medicine injection well main body 2 is conveyed to the sampling water tank through the drain pipe, an operator periodically detects the underground water in the sampling water tank, corresponding medicines are prepared according to pollutant components in the water, then the medicines are injected into the medicine distribution box 9, injection of different medicines is carried out according to different requirements of the pollutant components in the water, when the medicines are injected, the lifting frame 46 is respectively pushed by the lifting cylinder 45 to move in the lifting chamber 25, the transmission frame 11 is further driven to move up and down, the medicine pipe main body 12 is respectively moved into the underground water collected in the medicine injection well main bodies 2 in the first row of medicine injection well units and the second row of medicine injection well units, the controller 26 transmits a signal to the valve 24, the medicine in the medicine dispensing box 9 flows to the communicating pipe 22 through the medicine discharging pipe 23 and then flows into the medicine pipe main body 12, the medicine flowing into the medicine pipe main body 12 is discharged through the medicine holes 37 on the upper guide pipe 34 and the lower guide pipe 36, the medicine with set capacity is periodically injected into the medicine injecting well main body 2, the driving motor 20 drives the driving wheel 21 to rotate and then drives the adjacent one of the rotating wheels 16 to rotate and further drives the hollow rotating pipe 15 in the rotating wheel 16 to rotate on the rotating seat 14, the adjacent driving wheel 18 drives the transmission shaft 17 to rotate and further drives the other hollow rotating pipes 15 to rotate on the corresponding rotating seat 14, the hollow rotating tube 15 drives the medicine tube main body 12 to synchronously rotate and is matched with the mixing blade 38 to mix the water in the medicine injection well main body 2 and the injected medicine, in the mixing process, the hollow rotating tube 15 drives the medicine tube main body 12 to rotate so that the upper guide tube 34, the middle guide tube 35 and the lower guide tube 36 integrally rotate and further drive the first bevel gear 39 to rotate, and further drive the rotating shaft 40 to rotate and further drive the turning blade 43 to turn over, when the medicine tube main body 12 rotates, the mixing blade 38 on one side of the surface of the upper guide tube 34 rotates to one side of the turning blade 43 which is upwards arranged, at this time, the material turning blade 43 is turned downwards to one side of the surface of the downcomer 36, where the mixing blade 38 is not installed, on the other side of the surface of the downcomer 36, the mixing blade 38 is rotated to one side of the material turning blade 43 which is arranged downwards, at this time, the material turning blade 43 is turned upwards to one side of the surface of the upper conduit 34, where the mixing blade 38 is not installed, and the circulation is performed, so that in the process of turning the material turning blade 43, the two material turning blades 43 do not collide with the mixing blades 38 on the surfaces of the upper conduit 34 and the downcomer 36, and the water at the lower part in the injection well main body 2 and the water at the upper part in the injection well main body 2 are subjected to turbulence treatment through the turned material turning blade 43, and the water in the injection well main body 2 and the injected medicament react sufficiently, the pollutant in the water in the medicine injection well main body 2 is treated, so that the treatment efficiency of the pollutant in the underground water is improved.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the specific details of the embodiments, and various equivalent changes can be made to the technical solutions of the present invention within the scope of the technical concept of the present invention, and all such equivalent changes belong to the protection scope of the present invention.
Claims (10)
1. A method of constructing a permeable reactive barrier for groundwater treatment, comprising the steps of:
S1: paying off according to the design data, and determining the construction position of the permeable reactive barrier;
S2: excavating a chemical tank main body (1) at a construction position of a permeable reactive barrier, performing well construction operation at the bottom of the chemical tank main body (1) to form two rows of chemical injection well units which are arranged in parallel and spaced at a certain distance, wherein each chemical injection well unit consists of a plurality of chemical injection well main bodies (2) arranged at a certain distance, the first row of chemical injection well units are positioned at a high groundwater level of the construction position of the permeable reactive barrier, the second row of chemical injection well units are positioned at a low groundwater level of the construction position of the permeable reactive barrier, and the chemical injection well main bodies (2) of the first row of chemical injection well units and the chemical injection well main bodies (2) of the second row of chemical injection well units are staggered;
s3: a closed cover plate (3) is additionally arranged at the top of the medicament tank main body (1), a medicament supply mechanism is arranged at the upper part of the closed cover plate (3), a medicament distribution box (9) is also arranged in the medicament tank main body (1), the medicament distribution box (9) is communicated with the medicament supply mechanism, and the medicament supply mechanism injects medicament into the medicament distribution box (9) according to requirements;
S4: set up in medicament groove main part (1) and be used for respectively to first row's injection well unit and the second row in each injection well unit in injection well main part (2) stretch into medicament pipe main part (12) or will stretch into the elevating system that medicament pipe main part (12) in injection well main part (2) shifted out, when handling groundwater, elevating system drive medicament pipe main part (12) are shifted into in the groundwater that gathers in injection well main part (2), medicament pipe main part (12) and dispensing box (9) intercommunication handle the pollutant in the groundwater in injection well main part (2).
2. The construction method of a permeable reactive barrier for groundwater treatment according to claim 1, wherein: a rotating mechanism for driving the medicine tube main bodies (12) in all the medicine injection well main bodies (2) in the same row to rotate and an up-down turning mechanism matched with the medicine tube main bodies (12) are arranged in the medicine tank main bodies (1);
the rotating mechanism comprises hollow rotating pipes (15), a first transmission mechanism and a driving mechanism, wherein a plurality of the hollow rotating pipes (15) are arranged in the medicament tank main body (1) and are in one-to-one correspondence connection with the medicament pipe main body (12), the first transmission mechanism and the driving mechanism are both arranged in the medicament tank main body (1), and a plurality of the hollow rotating pipes (15) are arranged on the first transmission mechanism and are in one-to-one correspondence connection with the medicament pipe main body (12);
The up-down turning mechanism comprises a second transmission mechanism and turning blades (43), and the turning blades (43) are arranged on the second transmission mechanism.
3. The construction method of a permeable reactive barrier for groundwater treatment according to claim 2, wherein: the drug injection well is characterized in that the drug injection well body (12) comprises an upper guide pipe (34) arranged at the inner upper part of the drug injection well body (2) and a lower guide pipe (36) arranged at the inner lower part of the drug injection well body (2), the upper guide pipe (34) is connected with the lower guide pipe (36) through a middle guide pipe (35), a plurality of drug injection holes (37) are formed in the upper guide pipe (34) and the lower guide pipe (36), and a plurality of mixing blades (38) are respectively arranged on one side of the surface of the upper guide pipe (34) and the other side of the surface of the lower guide pipe (36) from top to bottom.
4. A method of constructing a permeable reactive barrier for groundwater treatment according to claim 3, wherein: be equipped with in medicament groove main part (1) around dispensing box (9) outlying side prevention of seepage baffle (7), dispensing box (9) bottom is equipped with end prevention of seepage baffle (8), end prevention of seepage baffle (8) below is equipped with mounting panel (10), be equipped with between mounting panel (10) and end prevention of seepage baffle (8) a plurality of and hollow rotation pipe (15) one-to-one arrange medicine pipe (23), be equipped with valve (24) on arranging medicine pipe (23), it is connected with communicating pipe (22) to arrange medicine pipe (23) bottom, communicating pipe (22) bottom passes hollow rotation pipe (15) and stretches into in upper catheter (34).
5. The construction method of a permeable reactive barrier for groundwater treatment according to claim 4, wherein: the lifting mechanism comprises lifting chambers (25) which are respectively arranged at one sides of the side anti-seepage partition plates (7), lifting cylinders (45) are respectively arranged in the lifting chambers (25), a transmission frame (11) is arranged below the mounting plate (10), lifting frames (46) are arranged at two ends of the transmission frame (11), the two lifting frames (46) respectively extend into the adjacent lifting chambers (25), and the output ends of the two lifting cylinders (45) are respectively connected with the adjacent lifting frames (46).
6. The construction method of a permeable reactive barrier for groundwater treatment according to claim 5, wherein: the first transmission mechanism comprises a plurality of base plates (13) arranged in a transmission frame (11), a rotating seat (14) is arranged on each base plate (13), a hollow rotating tube (15) is arranged on each rotating seat (14), rotating wheels (16) are fixedly sleeved on the hollow rotating tubes (15), transmission wheels (18) are arranged between the adjacent rotating wheels (16) through transmission shafts (17), the transmission wheels (18) are meshed with the adjacent rotating wheels (16), the driving mechanism comprises a driving chamber (19) arranged in one of the lifting frames (46), a driving motor (20) is arranged in each driving chamber (19), the output end of each driving motor (20) is connected with a driving wheel (21), and the driving wheels (21) are meshed with the adjacent rotating wheels (16).
7. The construction method of a permeable reactive barrier for groundwater treatment according to claim 6, wherein: the second transmission mechanism comprises connecting rods (31) arranged at two ends of the bottom of the base plate (13), the bottoms of the two connecting rods (31) extend into the drug injection well main body (2) and are connected with mounting frames (32), the two mounting frames (32) are arranged at two sides of an upper guide pipe (34), the tops of the two mounting frames (32) are connected through positioning rings (33), through holes matched with the upper guide pipe (34) are formed in the positioning rings (33), a second bevel gear (41) is arranged at the lower part of the mounting frame (32) through a rotating shaft (40), a first bevel gear (39) meshed with the two second bevel gears (41) is fixedly sleeved on the middle guide pipe (35), and a turning blade (43) is fixedly sleeved on the rotating shaft (40);
In the initial state, one of the turning blades (43) is upwards arranged on one side of the surface of the upper conduit (34) where the mixing blade (38) is not arranged, and the other turning blade (43) is downwards arranged on one side of the surface of the lower conduit (36) where the mixing blade (38) is not arranged;
Under the operating condition, the medicament tube main body (12) rotates, the mixing blade (38) on one side of the surface of the upper conduit (34) rotates to one side of the stirring blade (43) which is arranged upwards, at the moment, the stirring blade (43) downwards overturns to one side of the surface of the lower conduit (36) where the mixing blade (38) is not arranged, the mixing blade (38) on the other side of the surface of the lower conduit (36) rotates to one side of the stirring blade (43) which is arranged downwards, at the moment, the stirring blade (43) upwards overturns to one side of the surface of the upper conduit (34) where the mixing blade (38) is not arranged, and the circulation is performed.
8. The construction method of a permeable reactive barrier for groundwater treatment according to claim 5, wherein: one of them be equipped with controller (26) in lift chamber (25), upper portion and lower part all are equipped with water level sensor (30) in dispensing case (9), be equipped with sampling head (44) in injection well main part (2), water level sensor (30) and controller (26) electric connection, closure apron (3) upper portion is provided with the sampling pump, the sampling pump water inlet end is connected with sampling head (44) through the sampling pipe, the sampling pump water outlet end is connected with external sampling water tank through the drain pipe.
9. The construction method of a permeable reactive barrier for groundwater treatment according to claim 5, wherein: one of the lifting chambers (25) is internally provided with a stirring motor (27), the output end of the stirring motor (27) stretches into the dispensing box (9) to be connected with a stirring shaft (28), and the stirring shaft (28) is provided with a plurality of stirring blades (29).
10. The construction method of a permeable reactive barrier for groundwater treatment according to claim 8, wherein: the medicine feeding mechanism comprises a medicine feeding box (4) arranged above the closed cover plate (3), a medicine guiding pipe (5) extending into the medicine dispensing box (9) is arranged on the medicine feeding box (4), a medicine guiding pump (6) is arranged on the medicine guiding pipe (5), and the medicine guiding pump (6) is electrically connected with a water level sensor (30) and a controller (26).
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