CN213326889U - Groundwater normal position slowly-releasing prosthetic devices - Google Patents
Groundwater normal position slowly-releasing prosthetic devices Download PDFInfo
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- CN213326889U CN213326889U CN202020809963.7U CN202020809963U CN213326889U CN 213326889 U CN213326889 U CN 213326889U CN 202020809963 U CN202020809963 U CN 202020809963U CN 213326889 U CN213326889 U CN 213326889U
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- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to an underground water normal position slowly-releasing prosthetic devices sets up in the restoration well of waiting to restore the district, put in control system including multistage serial-type underground slowly-releasing prosthetic systems and in the pit, multistage serial-type underground slowly-releasing prosthetic systems is used for the active ingredient that pollutes the feather and continuously release degradation pollutant to groundwater, multistage serial-type underground slowly-releasing prosthetic systems includes at least one slowly-releasing unit, every slowly-releasing unit includes slowly-releasing container, arranges in slowly-releasing material and coupling assembling in the slowly-releasing container, coupling assembling is used for establishing ties a plurality of slowly-releasing unit; the underground feeding control system is arranged above the multistage serial underground slow-release repair system and used for in-situ adjusting the position of the multistage serial underground slow-release repair system in a repair well and monitoring the release condition of the slow-release material and the physical and chemical indexes of underground water.
Description
Technical Field
The utility model relates to a groundwater environment remediation technical field, in particular to groundwater normal position slowly-releasing prosthetic devices.
Background
The In-Situ Chemical Oxidation (ISCO) remediation of underground water is a remediation technology for oxidizing and degrading pollutants In underground water by directly injecting an oxidizing agent into an aquifer, has the technical characteristics of quick response, short remediation period and the like, and is widely applied at home and abroad. However, because the oxidant is not selective, the organic matter in the natural soil consumes a large amount of oxidant, so that the actual demand of the oxidant is several times or even tens of times higher than the theoretical demand. In addition, because organic matters are adsorbed by soil sticky particles in the stratum, pollutants in the soil sticky particles are continuously desorbed and released after the pollution concentration of the pollution plume is reduced, so that the underground water remediation faces the challenges of tailing, rebounding and the like, and in order to achieve the standard of the pollution plume remediation, oxidation agents are required to be injected for multiple times in large dose, so that the cost is greatly increased.
SUMMERY OF THE UTILITY MODEL
Therefore, the underground water in-situ slow-release repair device and method are needed, multiple injection of the medicament is not needed, the use efficiency of the medicament is improved, the cost is saved, and the device is green and environment-friendly.
The utility model provides an underground water in-situ slow-release repairing device which is arranged in a repairing well of a to-be-repaired area and comprises a multi-stage series underground slow-release repairing system and an underground throwing control system,
the multistage tandem type underground slow release repair system is used for continuously releasing active components for degrading pollutants to underground water pollution plumes, and comprises at least one slow release unit, each slow release unit comprises a slow release container, a slow release material arranged in the slow release container and a connecting assembly, and the connecting assembly is used for connecting a plurality of slow release units in series;
the underground feeding control system is arranged above the multistage serial underground slow-release repair system and used for in-situ adjusting the position of the multistage serial underground slow-release repair system in a repair well and monitoring the release condition of the slow-release material and the physical and chemical indexes of underground water.
In one embodiment, the slow-release material comprises any one of a slow-release oxidizing agent, a slow-release activating agent, a slow-release biological carbon source and a slow-release oxygen supplying agent.
In one embodiment, the volume of the sustained-release material is 1mm3～50mm3。
In one embodiment, the slow release container comprises a sieve barrel and a pipe clamp arranged on the side surface of the sieve barrel, and the pipe clamp is used for fixing a sampling pipe.
In one embodiment, the screen barrel has a barrel depth of 0.5-1.5 m, a diameter of 60-280 mm and a wall thickness of 1-3 mm, and has a plurality of screen holes on its surface, and the screen holes have a diameter of 0.8-3 mm.
In one embodiment, the connecting assembly is a chain and a hook, the chain is connected to two ends of the opening of the slow release container, one end of the hook is installed on the chain, and the other end of the hook is used for connecting the upper stage to the bottom of the slow release container.
In one embodiment, the downhole launch control system comprises a buoy for balancing buoyancy and a surface control assembly for regulating the buoyancy of the buoy.
In one embodiment, an air bag and a water storage bin are arranged inside the float bowl, the air bag is arranged below the water storage bin, an exhaust valve is arranged on the air bag, a drainage valve is arranged on the water storage bin, and an air guide pipe insertion hole and a guide pipe insertion hole are formed in the upper surface of the float bowl;
the ground control assembly comprises a peristaltic pump and an air pump, the air pump is connected with the buoy through an air duct, and the peristaltic pump is connected with the buoy through a flow guide pipe.
In one embodiment, the side surface of the float bowl is also provided with a liquid level graduated tube.
In one embodiment, the depth of the buoy is 1-2 m, and the diameter of the buoy is 100-280 mm.
In one embodiment, the top end of the buoy is further connected with a steel cable with scales, one end of the steel cable is connected with the buoy, the other end of the steel cable is fixed on the wall of the repair well or the ground, and the release amount of the slow release material is calculated through the change of the scales of the steel cable.
In one embodiment, the underground water in-situ slow-release remediation device further comprises an out-of-well throwing and maintaining system, the out-of-well throwing and maintaining system comprises a supporting component and a power component, the supporting component comprises a triangular support, a pulley component and a gravimeter, the triangular support is arranged right above the remediation well, the gravimeter and the pulley component are arranged at the top end of the triangular support, the power component comprises a power supply, a motor and a hinge, and the hinge is arranged on the pulley component and connected with the motor.
The utility model provides a groundwater normal position slowly-releasing prosthetic devices and method, fix the sustained-release material normal position in the restoration well, adopt the mode of multistage series connection to make up, and put in the position and the release condition of control system normal position regulation sustained-release material in the restoration well through in the pit, can adjust the combination of sustained-release material at any time according to site conditions change, the flexible operation, the device makes the sustained-release material can stably release active ingredient for a long time and reach the long-term prosthetic purpose of pollution feather, need not to pour into the medicament into many times, the availability factor of medicament has been improved, and the cost is saved, green.
Drawings
FIG. 1 is a schematic view of the composition of the in-situ slow-release groundwater remediation device of the present invention;
fig. 2 is a schematic structural view of a sustained release container according to an embodiment of the present invention;
fig. 3 is a schematic view illustrating the composition and connection relationship of the connection assembly according to an embodiment of the present invention;
FIG. 4 is a longitudinal cross-sectional view of a float according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating A, B, C three coordinate points in embodiment 1 of the present invention;
fig. 6 shows the change of the pollutant concentration at A, B, C three coordinate points with the repair time in example 1 of the present invention.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Other than as shown in the operating examples, or where otherwise indicated, all numbers expressing quantities used in the specification and claims are to be understood as being modified in all instances by the term "about". For example, unless indicated to the contrary, the numerical parameters set forth in the foregoing specification and attached claims are approximations that can be suitably varied by those skilled in the art in seeking to obtain the desired properties utilizing the teachings disclosed herein. The use of numerical ranges by endpoints includes all numbers within that range and any range within that range, for example, 1 to 5 includes 1, 1.1, 1.3, 1.5, 2, 2.75, 3, 3.80, 4, and 5, and the like.
An in-situ groundwater slow-release remediation device and a groundwater remediation method using the same will be discussed in detail below.
Referring to fig. 1, an embodiment of the present invention provides an underground water in-situ slow-release repairing device, which is disposed in a repairing well of a to-be-repaired area, and includes a multi-stage serial underground slow-release repairing system, an underground release control system, and an outdoor release and maintenance system.
The multistage tandem type underground slow-release repair system is used for continuously releasing active components for degrading pollutants to underground water pollution plumes. The multistage serial-connection type downhole slow-release repair system comprises at least one slow-release unit 110, wherein each slow-release unit 110 comprises a slow-release container 111, a slow-release material arranged in the slow-release container and a connecting assembly 113, and the connecting assembly 113 is used for serially connecting a plurality of slow-release units 110. The slow release material is the active ingredient that degrades the contaminants.
The underground feeding control system is arranged above the multistage serial underground slow-release repair system and used for in-situ adjusting the position of the multistage serial underground slow-release repair system in a repair well and monitoring the release condition of the slow-release material and the physical and chemical indexes of underground water. The physicochemical indexes of the underground water comprise pH, DO and ORP. OD is dissolved oxygen, and refers to the amount of dissolved oxygen in groundwater. The OPR is the oxidation-reduction potential of groundwater, and is called oxidation-reduction potential and is used for reflecting the macroscopic redox property of all substances in groundwater.
The off-well putting and maintaining system is used for installing and maintaining the multistage serial-type downhole slow-release repairing system.
The embodiment of the utility model provides a groundwater normal position slowly-releasing prosthetic devices, fix the sustained-release material normal position in the restoration well, adopt the mode of multistage series connection to make up, and put in the position and the release condition of control system normal position regulation sustained-release material in the restoration well through in the pit, can adjust the combination of sustained-release material at any time according to the site conditions change, the flexible operation, the device makes sustained-release material can stably release active ingredient for a long time and reach the long-term prosthetic purpose of pollution feather, need not to pour into the medicament into many times, the availability factor of medicament has been improved, and the cost is saved, green.
Referring to fig. 2, the slow release container 111 includes a sieve barrel 1112, and a tube clamp 1114 disposed on a side surface of the sieve barrel 1112, wherein the tube clamp 1114 is used for fixing a sampling tube 1116.
The sampling pipe 1116 is used for in situ sampling of groundwater. The securement of the cartridge 1114 to the tube 1116 is meant to be somewhat restrictive of the use of the sample tube 1116, which remains movable within the cartridge 1114.
The screen barrel 1 can have a barrel depth of 0.5-1.5 m, a diameter of 60-280 mm and a wall thickness of 1-3 mm. The size of the screen barrel 1 is adjusted according to the inner diameter of a repair well in the actual implementation process.
The surface of the sieve barrel 1 is provided with a plurality of sieve holes, and the diameters of the sieve holes are 0.8 mm-3 mm. The shape of the sieve pore is not limited, and the sieve pore can be circular, square, diamond and the like.
The slow release material can comprise any one of a slow release oxidizing agent, a slow release activating agent, a slow release biological carbon source and a slow release oxygen supplying agent.
Examples of the slow-release oxidizing agent may be a slow-release material such as permanganate, persulfate, percarbonate, or the like. However, the slow-release oxidizing agent is not limited to these.
Examples of the slow release activator may be a slow release material such as ferrous sulfate, nano zero-valent iron, hydroxide, which may be alkali metal hydroxide, etc. However, the sustained-release activator is not limited to these.
Examples of the slow-release biological carbon source can be biochar, vegetable oil, organic acid, glucose and the like which can be used as a slow-release material of a microorganism culture medium. However, the slow-release biological carbon source is not limited to these.
Examples of the slow-release nutrient supplying material can be slow-release materials such as calcium peroxide and magnesium peroxide. However, the slow-release biological carbon source is not limited to these.
The sustained release material disposed in the sustained release container 111 may be one or more. Depending on the volume of the delay material and the volume of the delay container 111.
The shape of the sustained-release material is not limited, and the sustained-release material can be cubic, spherical or cylindricalEtc., but are not limited thereto. The volume of each sustained-release material can be 1mm3～50mm3。
Referring to fig. 3, in an embodiment, the connection assembly 113 includes a chain 1131 and a hook 1133, the chain 1131 is connected to two ends of the opening of the slow release container 111, one end of the hook 1133 is installed on the chain 1131, and the other end is used for connecting the bottom of the slow release container 111 of the upper-stage slow release unit 110.
The downhole launch control system includes a buoy 210 for balancing buoyancy and a surface control assembly 220. The surface control assembly 220 is used to regulate the buoyancy of the buoy 210.
The float 210 is disposed at the uppermost of the slow release unit 110. Referring to fig. 4, an air bag 211 and a water storage bin 212 are disposed inside the float 210, the air bag 211 is disposed below the water storage bin 212, an air discharge valve 213 is disposed on the air bag 211, a water discharge valve 214 is disposed on the water storage bin 212, and an air duct insertion opening 215 and a draft tube insertion opening 216 are disposed on the upper surface of the float 210. The drain valve 214 comprises a drain pipe and a valve switch, wherein one port of the drain pipe is positioned above the water storage bin 212, the other port of the drain pipe is positioned below the water storage bin 212, and the valve switch is positioned at the port of the drain pipe below the water storage bin 212.
In one embodiment, the side of the float 210 is further provided with a liquid level scale pipe 217.
The buoy 210 is cylindrical, the depth of the buoy can be 1-2 m, and the diameter can be mm-280 mm. The volume of the float bowl is adjusted according to the weight of the slow release unit 110.
The top end of the buoy 210 is further connected with a steel cable 211 with scales, one end of the steel cable 211 is connected with the buoy 210, and the other end of the steel cable is fixed on the wall of the repair well or the ground. And calculating the position change of the buoy 210 according to the scale change of the steel cable 211, so as to judge the release amount of the slow release material according to the buoyancy. The other end of the steel cable 211 is fixed on the wall of the repair well or on the ground and needs to be adjusted according to actual needs, so that the stability of the multistage tandem type underground slow-release repair system is maintained.
The surface control assembly 220 is located on the surface and includes a peristaltic pump (not shown) and an air pump. The air pump is connected with the float 210 through an air duct, specifically, one end of the air duct is connected with the air pump, and the other end of the air duct is connected with the air duct insertion port 215 of the float 210. The peristaltic pump pass through the honeycomb duct with the flotation pontoon 210 links to each other, and is specific honeycomb duct one end is connected the peristaltic pump, the other end with the honeycomb duct inserted hole 216 of flotation pontoon 210 is connected.
In one embodiment, the surface control assembly 220 further includes a liquid level gauge (not shown) and a digital control assembly (not shown). The liquid level meter is connected with the numerical control assembly, and the numerical control assembly is used for automatically feeding back the reading of the liquid level meter and controlling the air pump and the peristaltic pump to inject or extract gas or water into or from the buoy according to the reading of the liquid level meter. Through the level gauge with numerical control subassembly, automatic regulation and control the buoyancy of flotation pontoon 210, thereby regulation and control the position of flotation pontoon 210 in repairing the well, and then realize the control system normal position is adjusted in the pit the position of multistage serial-type downhole slow release repair system in repairing the well makes multistage serial-type downhole slow release repair system be in repairing well screen pipe scope, keeps the best transmission effect of slow release material, calculates the release rate of slow release material according to the liquid level change simultaneously, combines pollutant concentration change trend optimization monitoring scheme, reduces the unnecessary sampling.
In an embodiment, the gauge is a drop-in gauge.
In one embodiment, the surface control module 220 further comprises a sensor interface for installing sensors such as a liquid level meter, groundwater in-situ pH, conductivity, ORP, etc., and signal transmission devices.
Preferably, the ground control component 220 is a steel casing, and the peristaltic pump, the air pump, the sensor interface and the numerical control component are all disposed inside the steel casing.
Furthermore, the underground water in-situ slow-release repair device also comprises an off-well delivery and maintenance system. The off-well putting and maintaining system is used for installing and maintaining the multistage serial-type downhole slow-release repairing system.
The system for putting and maintaining the well outside comprises a supporting assembly and a power assembly.
The support component comprises a triangular support 311, a pulley component 312 and a gravity meter 313, the triangular support 311 is arranged right above the repair well, and the gravity meter 313 and the pulley component 312 are arranged at the top end of the triangular support 311.
The triangular support 311 is preferably a tempered triangular support.
The power assembly includes a power source (not shown), a motor 322, and a hinge 323, wherein the hinge 323 is mounted to the pulley assembly 312 and connected to the motor 322. The hinge 323 is controlled by the motor 322 to stretch, and the multistage series type downhole slow-release repair system is put into the well or taken out of the well.
The utility model also provides an groundwater normal position slowly-releasing repair method, including following step:
installing the underground water in-situ slow-release repair device in a repair well;
monitoring the position of the multistage serial underground slow release repair system in the repair well according to the liquid level change measured by the liquid level meter or the change of the scale of the steel cable, and injecting or extracting gas or water into or from the air floatation through an air pump and a peristaltic pump of the ground control assembly to enable the slow release unit to be in the range of a repair well sieve tube;
and calculating the release amount of the slow release material according to the liquid level change measured by the liquid level meter or the change of the steel cable scale, and regularly filling and maintaining the slow release material.
In one embodiment, the amount of the sustained release material is based on
And calculating, wherein r is the diameter of the sieve barrel, rho is the density of water, Delta L is the liquid level change measured by the liquid level meter or the change of the scale of the steel cable, and g is a gravity constant.
The following are specific examples.
Example 1
In the embodiment, aiming at the groundwater polluted by 1, 2-dichloroethane, a remediation well is arranged in a polluted feather area.
(1) An extra-well throwing and maintaining system is arranged above the repair well and comprises a tempered triangular support 311, a pulley assembly 312, a gravimeter 313, a power source 312, a motor 322 and a hinge 323. The top end of the tempering triangular support 311 is provided with a gravity gauge 313 and a pulley assembly 312, and a hinge 323 is arranged on the pulley assembly and connected with a motor 322.
(2) A downhole launch control system is installed including a surface control assembly 220 (a take-up reel, a peristaltic pump, an air pump, a level gauge and a numerical control assembly) and a buoy 210 located above ground. The depth of the pontoon 210 is 1m and the diameter is mm.
(3) The multi-stage serial underground slow-release repair system comprises 5 slow-release units 110, wherein each slow-release unit comprises a slow-release container 111, a potassium permanganate slow-release material is placed in each slow-release container, and each slow-release unit 111 is connected in series with a hook through a chain.
In the practical implementation process, according to the inner diameter mm of the repair well, the slow release container 111 is designed into a cylindrical stainless steel string bag with the diameter of 280mm and the length of 1m, the aperture of the screen mesh is 1mm, the potassium permanganate slow release material is a cube with the diameter of 1.2mm multiplied by 1.2mm, and the release period of the potassium permanganate is 6-12 months.
The installation method of the 5 slow release units comprises the following steps: the slow release unit 110 is suspended below the pulley assembly 312 of the tempered triangular bracket 311 by a hinge 323, and is slowly lowered to the repaired wellhead by the power provided by the motor 322, and the next slow release unit 110 is connected above the slow release unit.
(4) And the underground release control system and the multistage serial-type underground slow-release repair system are connected and installed.
After the last slow release unit 110 is installed, the buoy 210 is continuously connected above the last slow release unit 110 by adopting the same method as the installation method of 5 slow release units 110. The top end of the buoy 210 is connected with a steel cable with scales, and the other end of the steel cable is fixed on the wall of the repair well.
(5) In the implementation process, the positions of the 5 slow release units in the repair well are regularly monitored through a liquid level meter in the ground control assembly 220, meanwhile, air is injected into or pumped out of the buoy 210 through an air pump of the ground control assembly, or water is injected into or pumped out of the buoy 210 through a peristaltic pump, so that the slow release units are positioned in the range of a sieve tube of the repair well, the optimal transmission effect of the slow release materials is kept, meanwhile, the release amount of the potassium permanganate slow release materials is calculated, the monitoring scheme is optimized in combination with the change trend of the concentration of pollutants, and unnecessary sampling is reduced.
(6) In the implementation process, the release amount of the potassium permanganate sustained-release material is calculated by monitoring the position change of the 5 sustained-release units, so that the repair effect is predicted. In order to ensure that the repair has long-term effect, the system maintenance is carried out in the 4 th month of the operation of the slow release system, and a part of the potassium permanganate slow release material is refilled by using an off-well delivery and maintenance system.
(7) In the implementation process, three coordinate points are selected for detecting the concentration of the pollutants, and the three coordinate points are shown in fig. 5: point A is the groundwater upstream, point B is the boundary point of the influence range of the slow release material, point C is the groundwater downstream, and point W is the remediation well. These three points were tested for changes in contaminant concentration during long term remediation, as described in fig. 6. It can be seen from fig. 6 that the pollutant concentration at three points all continuously decreases without rebounding, which illustrates that continuous remediation can be realized by using the groundwater in-situ slow-release remediation device and method of the utility model to perform groundwater remediation without injecting oxidation agents for many times and with large dosage, thereby improving the utilization efficiency of the agents.
Example 2
In the embodiment, aiming at the benzene-polluted underground water, a repairing well W-1 and a repairing well W-2 are arranged in a polluted feather area. Underground water in-situ slow-release repair devices are respectively arranged in the repair well W-1 and the repair well W-2.
The installation procedure and implementation procedure of the device are substantially the same as in example 1. The difference is that a ferrous sulfate slow-release material is put in the repair well W-1, a sodium persulfate slow-release material is put in the repair well W-2, and the ferrous sulfate plays a role of an activator.
Similarly, three coordinate points located at the same positions as A, B, C in example 1 were selected around the rehabilitation well W-1 and the rehabilitation well W-2, respectively, to detect the concentration of the contaminant. The pollutant concentrations of all coordinate points are continuously reduced without rebounding, which shows that the embodiment also achieves a long-term continuous repairing effect, and the underground water in-situ slow-release repairing device is also suitable for underground water in-situ slow-release repairing needing to be activated.
Example 3
In this embodiment, for a polluted region with high benzene concentration in groundwater, the amount of the slow release material cannot meet the remediation target according to calculation, so that the region is subjected to conventional in-situ chemical oxidation remediation (i.e., adding an oxidizing agent), and after the benzene concentration in groundwater is reduced to about 0.5ppm, the same operation as in embodiment 1 is performed.
Likewise, three coordinate points located at the same positions as A, B, C in example 1 were selected around the well for contaminant concentration detection. The pollutant concentrations of all coordinate points are continuously reduced without rebounding, which shows that the embodiment also achieves a long-term continuous repairing effect, and the underground water in-situ slow-release repairing device is also suitable for the condition of high underground water pollutant concentrations.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (13)
1. An in-situ slow-release underground water repairing device which is arranged in a repairing well of a to-be-repaired area and is characterized by comprising a multi-stage serial underground slow-release repairing system and an underground release control system,
the multistage tandem type underground slow release repair system is used for continuously releasing active components for degrading pollutants to underground water pollution plumes, and comprises at least one slow release unit, each slow release unit comprises a slow release container, a slow release material arranged in the slow release container and a connecting assembly, and the connecting assembly is used for connecting a plurality of slow release units in series;
the underground feeding control system is arranged above the multistage serial underground slow-release repair system and used for in-situ adjusting the position of the multistage serial underground slow-release repair system in a repair well and monitoring the release condition of the slow-release material and the physical and chemical indexes of underground water.
2. The groundwater in-situ slow-release remediation device as claimed in claim 1, wherein the slow-release material comprises any one of a slow-release oxidant, a slow-release activator, a slow-release biological carbon source and a slow-release oxygen donor.
3. An in situ slow release groundwater remediation device as claimed in claim 2 wherein the volume of the slow release material is 1mm3～50mm3。
4. The groundwater in-situ slow release remediation device of claim 1, wherein the slow release container comprises a sieve barrel and a pipe clamp arranged on the side surface of the sieve barrel, and the pipe clamp is used for fixing a sampling pipe.
5. An in-situ slow-release groundwater remediation device as claimed in claim 4, wherein the screen barrel has a barrel depth of 0.5 to 1.5m, a diameter of 60 to 280mm, and a wall thickness of 1 to 3mm, and has a plurality of screen holes on the surface thereof, and the screen holes have a diameter of 0.8 to 3 mm.
6. The groundwater in-situ slow-release remediation device of claim 1, wherein the connection assembly comprises a chain and a hook, the chain is connected to two ends of the opening of the slow-release container, one end of the hook is mounted on the chain, and the other end of the hook is used for connecting the bottom of the upper-stage slow-release container.
7. An in situ slow release groundwater remediation device as claimed in claim 1 wherein the downhole launch control system comprises a buoy for balancing buoyancy and a surface control assembly for regulating buoyancy of the buoy.
8. An in-situ slow-release groundwater remediation device as claimed in claim 7, wherein the float bowl is internally provided with an air bag and a water storage bin, the air bag is arranged below the water storage bin, the air bag is provided with an exhaust valve, the water storage bin is provided with a drain valve, and the upper surface of the float bowl is provided with an air duct insertion opening and a flow guide pipe insertion opening;
the ground control assembly comprises a peristaltic pump and an air pump, the air pump is connected with the buoy through an air duct, and the peristaltic pump is connected with the buoy through a flow guide pipe.
9. An in-situ slow-release groundwater remediation device as claimed in claim 8, wherein the side face of the buoy is further provided with a liquid level graduated tube.
10. An in-situ slow-release groundwater remediation device as claimed in claim 8, wherein the pontoon is 1-2 m deep and 100-280 mm in diameter.
11. An in-situ slow-release groundwater remediation device as claimed in any one of claims 8 to 10, wherein the top end of the buoy is further connected with a steel cable with scales, one end of the steel cable is connected with the buoy, the other end of the steel cable is fixed on the wall of the remediation well or on the ground, and the release amount of the slow-release material is calculated through the change of the scales of the steel cable.
12. An in-situ slow-release groundwater remediation device as claimed in any one of claims 8 to 10, wherein the ground control component further comprises a liquid level meter and a numerical control component, the numerical control component is used for automatically feeding back a reading of the liquid level meter and controlling the air pump and the peristaltic pump to inject or extract gas or water into or from the buoy according to the reading of the liquid level meter.
13. The underground water in-situ slow-release repair device according to claim 1, further comprising an underground water delivery and maintenance system, wherein the underground water delivery and maintenance system comprises a support assembly and a power assembly, the support assembly comprises a triangular bracket, a pulley assembly and a gravimeter, the triangular bracket is arranged right above the repair well, the gravimeter and the pulley assembly are arranged at the top end of the triangular bracket, the power assembly comprises a power supply, a motor and a hinge, and the hinge is arranged on the pulley assembly and connected with the motor.
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| CN113636635A (en) * | 2021-07-12 | 2021-11-12 | 轻工业环境保护研究所 | In-situ chemical oxidation material long-acting accurate release dynamic control technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113636635A (en) * | 2021-07-12 | 2021-11-12 | 轻工业环境保护研究所 | In-situ chemical oxidation material long-acting accurate release dynamic control technology |
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