CN214496041U

CN214496041U - Device for simulating permeable reactive barrier of underground water

Info

Publication number: CN214496041U
Application number: CN202022927198.1U
Authority: CN
Inventors: 刘煜; 罗定贵; 韦乐章; 吴启航
Original assignee: Guangzhou University
Current assignee: Guangzhou University
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-10-26
Anticipated expiration: 2030-12-09

Abstract

The utility model relates to a device of simulation groundwater permeable reaction wall, it includes: the reaction medium filling column is used for filling different types of reaction media and comprises a first assembly port and a second assembly port which are oppositely arranged; a first simulated media packed column disposed on an opposite side of the first mounting port and a second simulated media packed column disposed on an opposite side of the second mounting port; and the first assembly port is detachably connected with the first simulation medium filling column through the first installation mechanism, and the second assembly port is detachably connected with the second simulation medium filling column through the second installation mechanism. The structure of this scheme device is formed simply, uses the simple operation, and the high efficiency of changing reaction medium is swift, can make the experimenter carry out the material screening and the filtration efficiency research of reaction medium more effectively.

Description

Device for simulating permeable reactive barrier of underground water

Technical Field

The utility model relates to a water purification treatment technical field especially relates to a device of simulation groundwater permeable reaction wall.

Background

With the rapid development of economy and the continuous increase of population, the damage of human beings to the environment increases day by day, and particularly with the reduction of water resource volume in recent years, the development and the utilization of underground water resources are effective ways for solving the problem of water resource shortage and meeting the basic requirements of people's life. And the excessive exploitation of underground water and the water quality pollution become serious day by day. The groundwater pollution characteristics are changing from a belt shape to a surface shape, expanding from a shallow layer to a deep layer, and extending from cities to rural areas. Groundwater resources are stored in aquifers beneath the surface, with concealment and uncertainty, and irreversible alteration in the migration and reaction of contaminants once they enter the groundwater system. The in-situ remediation of the groundwater is a technical means for carrying out in-situ remediation on the polluted groundwater under the natural condition that the formation of the groundwater is not damaged. The permeable reactive barrier is used for treating polluted underground water, which is a popular underground water remediation technology in the world.

Permeable Reactive Barrier (PRB) is a method for restoring pollutants downstream of a grid by installing a reaction medium on a supply path of an underground aquifer to intercept pollution plumes, allowing polluted underground water to flow through the reaction medium, and converting the pollutants into an environmentally acceptable form by degradation, adsorption and precipitation reactions. Compared with ex-situ remediation, the PRB technology has the characteristics of simple operation, low maintenance cost and small influence on the environment, and is successfully applied to some foreign groundwater pollution areas at present. By selecting different types of reaction media, pollutants in the groundwater are removed by different reaction mechanisms. The choice of reaction medium is particularly important when various types of contamination of the groundwater are present, and it is to be avoided that while one type of contamination is being treated, other types of water contamination are exacerbated. At present, the selection and optimization research aiming at PRB technical reaction media in China is still in a starting stage, the research of material screening and filtering efficiency of the reaction media is emphasized, a common PRB test device is complex in structure and composition, inconvenient to use, complex in operation and high in time consumption when the reaction media are replaced, and the research of the material screening and the filtering efficiency of the reaction media is influenced to a certain extent.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a device for simulating a permeable reactive barrier of groundwater, which aims to solve the problems that the operation and use are inconvenient, and the material screening and filtration efficiency research of a reaction medium cannot be effectively carried out in the prior art.

The application provides a device of simulation groundwater permeable reactive barrier, it includes:

the reaction medium filling column is used for filling different types of reaction media and comprises a first assembly port and a second assembly port which are oppositely arranged;

a first simulated media packed column disposed on an opposite side of the first mounting port and a second simulated media packed column disposed on an opposite side of the second mounting port; and

first installation mechanism and second installation mechanism, first assembly port pass through first installation mechanism with first simulation medium loads the post and can dismantle the connection, second assembly port pass through second installation mechanism with the second simulation medium loads the post and can dismantle the connection.

The device of simulation groundwater permeable reaction wall of above-mentioned scheme is applied to the laboratory, and it can simulate permeable reaction wall (PRB) structure and constitute and theory of operation, makes experimenter can be high-efficient and convenient carry out ground water purification treatment's material selection and efficiency research. Specifically, the device (the device for simulating the permeable reactive barrier of the groundwater is the same as the device for simulating the permeable reactive barrier of the groundwater) mainly comprises a reaction medium filling column, a first simulation medium filling column and a second simulation medium filling column, wherein the reaction medium filling column is used for filling different types of reaction media during experiments, and the reaction media participate in chemical, biological or physical filtration and purification treatment work on pollutants to realize the basic functions of PRB; and the first simulation medium filling column and the second simulation medium filling column can be filled with medium materials such as soil, quartz sand, stone particles and the like to simulate the actual stratum medium environment more vividly, and simultaneously can play a role in decelerating and slowing the flowing-through pollutants, so that the pollutants flowing into the reaction medium in unit time are proper, and the reaction medium has sufficient time to perform purification reaction with the pollutants. Wherein, reaction medium loads the post and includes first assembly port and second assembly port, first assembly port can load the post through first installation mechanism and can dismantle with first simulation medium and be connected, second assembly port accessible second installation mechanism can dismantle with second simulation medium and load the post and be connected simultaneously, when needing to change different types of reaction medium at the experimentation, the tester can dismantle first installation mechanism in order to open first assembly port selectively, perhaps dismantle second installation mechanism in order to open second assembly port, just can be more convenient pour out and refill the operation reaction medium in the post is filled to reaction medium, time saving and labor saving, the operation is high-efficient convenient. Also the structure of this scheme device is constituteed simply, uses the simple operation, and the high efficiency of changing reaction medium is swift, can make the experimenter carry out the material screening and the filtration efficiency research of reaction medium more effectively.

In one embodiment, the first mounting mechanism includes a first connecting member provided at an end of the first simulated-medium charging column, a first locking member provided at the first mounting port, and a second connecting member detachably attached to the first connecting member and the second connecting member.

In one embodiment, the second mounting mechanism includes a third connecting member, a second locking member, and a fourth connecting member, the third connecting member is disposed at an end of the second simulated medium packed column, the fourth connecting member is disposed at the second mounting port, and the second locking member is detachably connected to the third connecting member and the fourth connecting member.

In one embodiment, the first connecting member is configured as a first flange, the second connecting member is configured as a second flange, the third connecting member is configured as a third flange, the fourth connecting member is configured as a fourth flange, the first locking member is configured as a first bolt, the second locking member is configured as a second bolt, the first bolt is fixed to the first flange and the second flange in a threaded manner, and the second bolt is fixed to the third flange and the fourth flange in a threaded manner.

In one embodiment, one of the first flange plate and the second flange plate is concavely provided with a first annular sealing groove, the other one of the first flange plate and the second flange plate is convexly provided with a first annular bulge, and the first annular bulge is hermetically inserted into the first annular sealing groove;

one of the third flange disc and the fourth flange disc is concavely provided with a second annular sealing groove, the other of the third flange disc and the fourth flange disc is convexly provided with a second annular bulge, and the second annular bulge is inserted in the second annular sealing groove in a sealing manner.

In one embodiment, the device for simulating the groundwater permeable reactive wall further comprises a first sealing ring and a second sealing ring, the first sealing ring is clamped between the first flange plate and the second flange plate in a sealing manner, and the second sealing ring is clamped between the third flange plate and the fourth flange plate.

In one embodiment, the apparatus for simulating a groundwater permeable reactive wall further comprises a first support plate disposed at an end of the first simulated media packed column remote from the first flange, and a second support plate disposed at an end of the second simulated media packed column remote from the third flange.

In one embodiment, the end of the first simulated medium filling column away from the reaction medium filling column is provided with a liquid inlet, and the end of the second simulated medium filling column away from the reaction medium filling column is provided with a liquid outlet.

In one embodiment, the device for simulating the permeable reactive barrier of groundwater further comprises a liquid supply box, a liquid conveying pipe, a liquid return pipe, a liquid recovery box and a liquid driving pump, wherein one end of the liquid conveying pipe is communicated with the liquid supply box, the other end of the liquid conveying pipe is communicated with the liquid inlet, the liquid driving pump is connected to the liquid conveying pipe, one end of the liquid return pipe is communicated with the liquid recovery box, and the other end of the liquid return pipe is communicated with the liquid outlet.

In one embodiment, the first simulated medium filling column is provided with a first sampling port, and a first cover body is detachably mounted on the first sampling port; the reaction medium filling column is provided with a second sampling port, and a second cover body is detachably mounted on the second sampling port; the second simulation medium filling column is provided with a third sampling port, and a third cover body is detachably mounted on the third sampling port; the outer walls of the first cover body, the second cover body and the third cover body are provided with lifting concave parts and/or anti-skid grains.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an apparatus for simulating a permeable reactive barrier to groundwater according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the structure of the reaction medium-packed column of FIG. 1;

FIG. 3 is a schematic diagram of the right-side view of FIG. 2;

fig. 4 is a structural diagram of the bottom view of fig. 3.

Description of reference numerals:

10. filling a column with a reaction medium; 11. a first assembly port; 12. a second assembly port; 13. a second sampling port; 20. a first simulated media packed column; 21. a liquid inlet; 22. a first sampling port; 30. a second simulated media packed column; 31. a liquid outlet; 32. a third sampling port; 40. a first mounting mechanism; 41. a first connecting member; 42. a first locking member; 43. a second connecting member; 50. a second mounting mechanism; 51. a third connecting member; 52. a second locking member; 53. a fourth connecting member; 60. a first support plate; 70. a second support plate.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

As shown in fig. 1, a device for simulating a permeable reactive barrier to groundwater is shown for an embodiment of the present application, which includes: a reaction medium-packed column 10, a first simulated medium-packed column 20, a second simulated medium-packed column 30, a first mounting mechanism 40, and a second mounting mechanism 50.

The reaction medium packed column 10 is used for packing different types of reaction media, and the reaction medium packed column 10 comprises a first assembling port 11 and a second assembling port 12 which are oppositely arranged; a first simulated media packed column 20 is disposed on the opposite side of the first mounting port 11, and a second simulated media packed column 30 is disposed on the opposite side of the second mounting port 12; the first mounting port 11 is detachably connected to the first simulated-medium-packing column 20 by the first mounting mechanism 40, and the second mounting port 12 is detachably connected to the second simulated-medium-packing column 30 by the second mounting mechanism 50.

The device of simulation groundwater permeable reaction wall of above-mentioned scheme is applied to the laboratory, and it can simulate permeable reaction wall (PRB) structure and constitute and theory of operation, makes experimenter can be high-efficient and convenient carry out ground water purification treatment's material selection and efficiency research. Specifically, the device (the abbreviation of the device for simulating the permeable reactive barrier of groundwater, the same below) is mainly composed of three main bodies of a reaction medium filling column 10, a first simulation medium filling column 20 and a second simulation medium filling column 30, wherein the reaction medium filling column 10 is used for filling different kinds of reaction media during experiments, and the reaction media participate in the chemical, biological or physical filtration and purification treatment work of pollutants to realize the basic functions of PRB, and the first simulation medium filling column 20 and the second simulation medium filling column 30 can be filled with medium materials such as soil, quartz sand, stone particles and the like, so as to simulate the actual stratum medium environment more realistically, meanwhile, the device can play a role in slowing down and slowing down the flowing-through pollutants, so that the pollutants flowing into the reaction medium in unit time are proper, and the reaction medium has sufficient time to perform purification reaction with the pollutants.

Wherein, reaction medium loads post 10 and includes first assembly port 11 and second assembly port 12, first assembly port 11 can be dismantled with first simulation medium and pack post 20 through first installation mechanism 40 and be connected, second assembly port 12 accessible second installation mechanism 50 can be dismantled with second simulation medium and pack post 30 and be connected simultaneously, when need changing different kind reaction medium in the test process, the tester can dismantle first installation mechanism 40 selectively in order to open first assembly port 11, perhaps dismantle second installation mechanism 50 in order to open second assembly port 12, just can be more convenient pour out and reload the operation reaction medium in reaction medium loads post 10, time saving and labor saving, the operation is high-efficient convenient. Also the structure of this scheme device is constituteed simply, uses the simple operation, and the high efficiency of changing reaction medium is swift, can make the experimenter carry out the material screening and the filtration efficiency research of reaction medium more effectively.

In the above-described embodiment, the first simulated media packed column 20, the reaction medium packed column 10, and the second simulated media packed column 30 are each formed as a cylindrical cylinder, and are not only simple in shape and structure, but also easy to manufacture and use. The other three materials can be made of acrylic, glass, transparent plastic and other materials, and the cost is low and the workability is strong.

It should be noted that the test object of the device is a fluid substance, such as contaminated water containing various types of magazines and pollutants.

The flow direction of the contaminated water may be the first simulated media packed column 20 → the reaction media packed column 10 → the second simulated media packed column 30, or the flow direction may also be the second simulated media packed column 30 → the reaction media packed column 10 → the first simulated media packed column 20, which may be specifically selected according to actual needs.

Referring to fig. 1, in some embodiments of the present invention, a liquid inlet 21 is disposed at an end of the first simulated media packing column 20 away from the reaction media packing column 10, and a liquid outlet 31 is disposed at an end of the second simulated media packing column 30 away from the reaction media packing column 10. Therefore, the polluted water flows into the first simulation medium filling column 20 from the liquid inlet 21 and flows to the reaction medium filling column 10, flows into the second simulation medium filling column 30 after passing through the reaction medium filling column 10 and finally flows out from the liquid outlet 31, and a tester can know which impurities or pollution sources in the polluted water are effectively filtered by the reaction medium by collecting the polluted water of the liquid outlet 31 and carrying out assay analysis, so that the basis can be provided for screening the reaction medium. In addition, in a set period of time, the purification efficiency of the reaction medium can be accurately evaluated, for example, the content of impurities or pollution sources in the polluted water at the liquid outlet 31 is obtained, and the ratio of the content of impurities or pollution sources in the polluted water at the liquid inlet 21 is obtained, so that the purification efficiency value can be obtained.

Specifically, in the present embodiment, the first simulated media packed column 20 and the second simulated media packed column 30 are each filled with soil. The reaction medium filled in the reaction medium filling column 10 can be, but is not limited to, steel slag, scrap iron, ceramsite, kaolin, polyvinyl alcohol, modified bentonite and the like, and can be specifically selected according to actual needs.

Further, the device of simulation groundwater permeable reaction wall still includes feed box, transfer line, returns liquid pipe, liquid collection box and liquid driving pump, the one end of transfer line with the feed box switch-on, the other end of transfer line with the switch-on of inlet 21, liquid driving pump connect in on the transfer line, return the one end of liquid pipe with the switch-on of liquid collection box, return the other end of liquid pipe with the switch-on of liquid outlet 31.

The liquid supply tank is filled with polluted water to be used in the test. After the test is started, the liquid driving pump is started, the polluted water in the liquid supply tank flows in the liquid conveying pipe at a certain flow speed and can sequentially flow through the first simulated medium filling column 20, the reaction medium filling column 10 and the second simulated medium filling column 30, and finally flows out of the liquid return pipe and flows into the liquid recovery tank for storage. The whole flow path of the polluted water is simple to set, the practicability is strong, and the flow environment of actual underground water can be simulated more vividly, so that the accuracy and the scientificity of the test result are improved.

With reference to fig. 1 and fig. 2, in still another embodiment, the first simulated medium filling column 20 is provided with a first sampling port 22, and a first cover is detachably mounted on the first sampling port 22; the reaction medium filling column 10 is provided with a second sampling port 13, and a second cover body is detachably mounted on the second sampling port 13; the second simulated medium filling column 30 is provided with a third sampling port 32, and a third cover body is detachably mounted on the third sampling port 32; the outer walls of the first cover body, the second cover body and the third cover body are provided with lifting concave parts and/or anti-skid grains.

In the actual experiment, the flow rate of the polluted water may be too fast or too slow due to the influence of the texture, physical properties, chemical properties and other factors of some selected reaction media or simulation media, which is not favorable for sampling and analyzing the liquid outlet 31 to effectively carry out research work. At this moment, the first sampling port 22 is respectively arranged at the middle position of the first simulation medium filling column 20, the second sampling port 13 is arranged at the middle position of the reaction medium filling column 10, and the third sampling port 32 is arranged at the middle position of the second simulation medium filling column 30, so that the experimenter can sample and analyze the polluted water at any time in the midway of the test process, and the accuracy of the test result is improved.

In this embodiment, the first cover body, the second cover body and the third cover body are respectively screwed on the corresponding sampling ports, and during a normal experiment, the first cover body, the second cover body and the third cover body are screwed to avoid the danger and the pollution caused by accidental outflow of polluted water, reaction media and the like in the device, and simultaneously avoid the oxidation of the reaction media caused by the external oxygen entering the device, and the influence of the modification of the reaction media on the purification capacity. When the sampling operation is needed, the target cover body can be quickly and easily unscrewed, and the operability is excellent.

The lifting concave part or the anti-skid grain is designed and manufactured on the outer walls of the first cover body, the second cover body and the third cover body, so that the friction force between the hand part of a tester and the cover body can be increased, and the cover body can be opened or closed smoothly.

With continued reference to fig. 1-4, in some embodiments, the first mounting mechanism 40 includes a first connecting member 41, a first locking member 42, and a second connecting member 43, the first connecting member 41 is disposed at the end of the first simulated media loading column 20, the second connecting member 43 is disposed at the first assembly port 11, and the first locking member 42 is detachably assembled with the first connecting member 41 and the second connecting member 43. Thus, by locking or releasing the first locking member 42, the first connecting member 41 can be quickly assembled and fixed to or separated from the second connecting member 43, thereby facilitating the test personnel to exchange and load different kinds of reaction media from the first assembling port 11 side.

With reference to fig. 1 to 4, similarly, the second mounting mechanism 50 includes a third connecting member 51, a second locking member 52 and a fourth connecting member 53, the third connecting member 51 is disposed at the end of the second analog medium loading column 30, the fourth connecting member 53 is disposed at the second assembling port 12, and the second locking member 52 is detachably assembled and connected to the third connecting member 51 and the fourth connecting member 53. Thus, by locking or releasing the second locking member 52, the third connecting member 51 can be quickly assembled and fixed to or separated from the fourth connecting member 53, thereby facilitating the test personnel to exchange and fill different kinds of reaction media from the second assembling port 12 side.

Specifically, in the above-described embodiment, the first connecting member 41 is provided as a first flange, the second connecting member 43 is provided as a second flange, the third connecting member 51 is provided as a third flange, the fourth connecting member 53 is provided as a fourth flange, the first locking member 42 is provided as a first bolt, the second locking member 52 is provided as a second bolt, the first bolt is screwed to the first flange and the second flange, and the second bolt is screwed to the third flange and the fourth flange. The flange plates are adopted for butt joint and are fastened by bolts, the mounting mode and the structure are simple, the mounting and dismounting operation is convenient and labor-saving, and the connection reliability among the first simulation medium filling column 20, the reaction medium filling column 10 and the second simulation medium filling column 30 is high.

As described in the above scheme, the reaction medium may be steel slag, iron filings, or ceramsite in fine particle state. Due to the manufacturing size and the assembling size errors, gaps are generated between the first flange plate and the second flange plate and between the third flange plate and the fourth flange plate, the material leakage problem is caused during the test, the normal test is influenced, and the environment is polluted. For this reason, it is necessary to design the device to be sealed.

In some embodiments, one of the first flange and the second flange is concavely provided with a first annular sealing groove, and the other of the first flange and the second flange is convexly provided with a first annular bulge which is inserted in the first annular sealing groove in a sealing manner;

After the device is assembled, the first annular bulge is inserted into the first annular sealing groove, a bent sealing matching surface can be formed between the first annular bulge and the first annular sealing groove, and similarly, the second annular bulge is inserted into the second annular sealing groove, and a bent sealing matching surface can be formed between the first annular bulge and the second annular sealing groove.

Optionally, each annular sealing groove and the corresponding annular protrusion may be circular, square, triangular, or the like with matched sizes; the concrete can be selected according to actual needs.

Or in other embodiments, the device for simulating the groundwater permeable reactive barrier further includes a first sealing ring and a second sealing ring, the first sealing ring is clamped between the first flange plate and the second flange plate in a sealing manner, and the second sealing ring is clamped between the third flange plate and the fourth flange plate. The first sealing ring and the second sealing ring can enable an annular sealing belt to be formed between the first flange plate and the second flange plate in pair and between the third flange plate and the fourth flange plate, so that the granular reaction medium is effectively prevented from leaking out of the assembly gap.

Alternatively, the first and second sealing rings may be, but are not limited to, rubber rings.

With reference to fig. 1, in addition, on the basis of any of the above embodiments, the apparatus for simulating a groundwater permeable reactive wall further includes a first supporting plate 60 and a second supporting plate 70, the first supporting plate 60 is disposed at an end of the first simulated media packing column 20 away from the first flange, and the second supporting plate 70 is disposed at an end of the second simulated media packing column 30 away from the third flange.

The first support plate 60 and the first flange plate are correspondingly adapted in size and shape respectively, and the second support plate 70 and the third flange plate are correspondingly adapted in size and shape respectively, so that the first simulation medium filling column 20 and the second simulation medium filling column 30 can be guaranteed to keep horizontal postures, and the polluted water can effectively flow.

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.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims

1. An apparatus for simulating a permeable reactive barrier to groundwater, comprising:

2. A device of simulating a permeable reactive barrier to groundwater according to claim 1, wherein the first mounting mechanism comprises a first connecting member disposed at an end of the first simulation medium filling column, a first locking member disposed at the first fitting port, and a second connecting member detachably assembled to the first connecting member and the second connecting member.

3. A device for simulating a groundwater permeable reactive wall according to claim 2, wherein the second mounting mechanism comprises a third connecting member, a second locking member and a fourth connecting member, the third connecting member is disposed at the end of the second simulation medium filling column, the fourth connecting member is disposed at the second mounting port, and the second locking member is detachably assembled with the third connecting member and the fourth connecting member.

4. A device for simulating a permeable reactive barrier to groundwater according to claim 3, wherein the first connecting member is a first flange, the second connecting member is a second flange, the third connecting member is a third flange, the fourth connecting member is a fourth flange, the first locking member is a first bolt, the second locking member is a second bolt, the first bolt is fixed to the first flange and the second flange by screwing, and the second bolt is fixed to the third flange and the fourth flange by screwing.

5. A device for simulating a permeable reactive barrier for groundwater according to claim 4, wherein one of the first flange and the second flange is concavely provided with a first annular sealing groove, and the other one of the first flange and the second flange is convexly provided with a first annular bulge, and the first annular bulge is inserted into the first annular sealing groove in a sealing manner;

6. The apparatus of claim 4, further comprising a first sealing ring and a second sealing ring, wherein the first sealing ring is clamped between the first flange and the second flange, and the second sealing ring is clamped between the third flange and the fourth flange.

7. An apparatus according to claim 4, further comprising a first support plate and a second support plate, wherein the first support plate is disposed at an end of the first simulated media packing column away from the first flange, and the second support plate is disposed at an end of the second simulated media packing column away from the third flange.

8. A device for simulating a permeable reactive barrier to groundwater according to claim 7, wherein the end of the first simulated media packed column remote from the reactive media packed column is provided with a liquid inlet, and the end of the second simulated media packed column remote from the reactive media packed column is provided with a liquid outlet.

9. A device of simulating a permeable reactive barrier to groundwater as claimed in claim 8, wherein the device further comprises a liquid supply tank, a liquid transfer pipe, a liquid return pipe, a liquid recovery tank and a liquid driving pump, one end of the liquid transfer pipe is connected to the liquid supply tank, the other end of the liquid transfer pipe is connected to the liquid inlet, the liquid driving pump is connected to the liquid transfer pipe, one end of the liquid return pipe is connected to the liquid recovery tank, and the other end of the liquid return pipe is connected to the liquid outlet.

10. A device for simulating a permeable reactive barrier to groundwater according to any one of claims 1 to 9, wherein the first simulated media filling column is provided with a first sampling port, and a first cover is detachably mounted on the first sampling port; the reaction medium filling column is provided with a second sampling port, and a second cover body is detachably mounted on the second sampling port; the second simulation medium filling column is provided with a third sampling port, and a third cover body is detachably mounted on the third sampling port; the outer walls of the first cover body, the second cover body and the third cover body are provided with lifting concave parts and/or anti-skid grains.