CN114295804B - Integrated experimental device for soil restoration and activation method research - Google Patents

Abstract

The invention discloses an integrated experimental device for soil restoration and activation method research, which belongs to the technical field of soil restoration experiments and comprises a main body and a base positioned below the main body, wherein an opening is formed in the upper part of the main body, a cathode electrode placing plate is arranged in the middle of the top surface of the main body, anode electrode placing plates are arranged on two sides of the top surface of the main body, a plurality of placing holes are formed in the surfaces of the cathode electrode placing plate and the anode electrode placing plate, a group of medicine adding barrels are respectively arranged below each two groups of placing holes in the cathode electrode placing plate, and a plurality of stirring rod groups are arranged on the outer wall of each medicine adding barrel.

Description

Integrated experimental device for soil restoration and activation method research

Technical Field

The invention relates to the technical field of soil remediation experiments, in particular to an integrated experimental device for researching a soil remediation activation method.

Background

In recent years, the problem of soil pollution is increasingly serious due to the influence of the problems of excessive pesticide application, unreasonable discharge of industrial wastewater and the like, the problem becomes an important influence factor influencing normal production and life of people, and the soil pollution has certain concealment and hysteresis, if not treated, the soil is only naturally recovered by soil, and the time of hundreds of years or even thousands of years is generally consumed. Because organic pollutants in soil, especially polycyclic aromatic hydrocarbon, are difficult to decompose, but polycyclic aromatic hydrocarbon has great toxic action on human body, which causes the reduction of blood platelets and white blood cells, the myelocytic anemia and the leukemia, the neurasthenia syndrome, the numbness of limbs and the hypoalgesia, the influence on metabolism, the damage and the sensitization to skin, and the bleeding tendency of skin mucosa can appear after long-term contact. Therefore, it is important for soil remediation.

At present, the main methods for soil remediation comprise physical remediation, chemical remediation and biological remediation, the pertinence of each remediation technology is different, the method is mainly researched for soil in-situ leaching, electric diffusion remediation, electric heating coupling and redox methods in the chemical remediation method, and the chemical redox technology is to add a chemical oxidant/reducing agent into soil to enable pollutants in the soil to undergo redox reaction so as to achieve the aim of soil remediation. The oxidation reaction is that an oxidant reacts with organic pollutants in soil or underground water, the reduction reaction is that substances capable of undergoing the reduction reaction react, the reduction reaction is combined with an electric diffusion method, and is an innovative point of current research.

Patent CN207036831U discloses a pollute soil restoration test device, the on-line screen storage device comprises a base, the top of base is fixedly connected with slider and sleeve pipe respectively, and the spout has been seted up in the front of slider, and the inner wall sliding connection of spout has the mobile device, the draw-in groove has been seted up to one side of slider, and the first spring of the bottom fixedly connected with of cover intraductal wall, the top fixedly connected with axle block of first spring, and the top swing joint of axle block has the pressure pole, the surface and the sheathed tube inner wall sliding connection of pressure pole, and the top fixedly connected with fixed plate of pressure pole, the utility model discloses a relate to soil restoration technical field. This pollute soil restoration test device has changed because repair liquid and the problem that pollutes soil can not the misce bene, has reduced the time overlength of experiment, has improved the accuracy of the result of experiment, greatly increased its functionality, whole operation process is simple and convenient, has guaranteed going on of soil repair work. However, the application range is limited, and the available value is not high when the chemical repair method is researched, so that a more scientific experimental device needs to be provided for various requirements in chemical repair.

Disclosure of Invention

Aiming at the existing problems, the invention provides an integrated experimental device for researching a soil restoration and activation method.

The technical scheme of the invention is as follows:

an integrated experimental device for soil restoration and activation method research comprises a main body and a base positioned below the main body, wherein an opening is formed above the main body, the base is arranged in a hollow manner, a cathode electrode placing plate is arranged in the middle of the top surface of the main body, anode electrode placing plates are arranged on two sides of the top surface of the main body, a plurality of placing holes are formed in the surfaces of the cathode electrode placing plate and the anode electrode placing plate, a group of medicine adding barrels are respectively arranged below each two groups of placing holes on the cathode electrode placing plate, the medicine adding barrels are arranged in parallel and are two groups, the medicine adding barrels are sequentially provided with an outer wall, a thickened inner wall and a medicine mixing cavity from outside to inside,

the medicine adding barrel is rotatably connected with the cathode electrode placing plate through a limiting block arranged at the top of the medicine adding barrel, a rotating rod arranged at the bottom of the medicine adding barrel penetrates through the bottom of the main body and then is connected with the center of the upper surface of a rotating gear positioned in the base, the lower surface of one group of the rotating gear is provided with a rotating motor used for controlling the rotation of the rotating gear, two groups of the rotating gears are meshed with each other and synchronously rotate in opposite directions, the outer wall of each medicine adding barrel is provided with a plurality of stirring rod groups, the stirring rod groups of each medicine adding barrel are arranged at equal intervals from top to bottom, and the stirring rod groups of two medicine adding barrels are arranged in a staggered mode,

each stirring rod group comprises 4 groups of stirring rods arranged at equal intervals in the circumferential direction, each stirring rod comprises a circular rotating part and a long arc-shaped stirring part, the rotating part is embedded in the outer wall and is rotationally connected with the outer wall through a group of rotating shafts, a group of arc-shaped grooves are arranged at the position where each group of rotating part is contacted with the thickening inner wall, the rotating parts can rotate in the arc-shaped grooves, the thickening inner wall corresponds to each group of arc-shaped grooves, a group of grooves are arranged in the inner parts of the arc-shaped grooves, fixed blocks are arranged at the bottom in the grooves and are connected with sliding blocks close to one ends of the arc-shaped grooves through a group of springs, the sliding blocks are connected with the grooves in a sliding and sealing mode, a clamping groove matched with the tail end of the sliding block in a matched mode is arranged on the outer wall of the rotating part, the clamping groove is fixedly matched with the sliding block through the clamping groove in a matched mode when the rotating part is located at the position of the clamping groove, the clamping groove and the sliding block are inclined plane which is obliquely arranged, and the direction of the inclined angle of the clamping groove is the same as the direction of the inclined angle of the stirring parts,

the medicine adding barrel is internally provided with a medicine mixing device, and one side of the main body is provided with a plurality of groups of gas injection pipes.

Further, the inside laminating of base is equipped with the pH monitor that is used for monitoring soil pH value with the main part bottom for the temperature monitoring appearance of monitoring soil temperature, the humidity monitoring appearance for monitoring soil moisture, inside the response end of pH monitor, temperature monitoring appearance and humidity monitoring appearance all runs through the main part bottom and extends to the main part, the display screen electric connection that the data output end of pH monitor, temperature monitoring appearance and humidity monitoring appearance all was equipped with the base outer wall. The experimenter can observe the pH value, the temperature and the humidity in the soil in time.

Further, the inside upper surface of base is equipped with and is used for doing the electric heating board of the inside soil heating of main part, the electric heating board is 3 groups and two bisymmetry settings are in the dwang both sides. The soil in the main body is heated through the electric heating plate so as to achieve different temperature conditions and achieve various experimental purposes.

Further, the gas injection pipe is 4 groups and two bisymmetry settings are in the board both sides are placed to the cathode electrode, and inside every group gas injection pipe front end extended to the main part, the gas injection pipe rear end was located the cover at main part external position and is equipped with the toothed disc, and the toothed disc that lies in two sets of gas injection pipes with one side all meshes and synchronous rotation with the transition gear that lies in the main part lateral wall, the transition gear rotates through the gas injection motor drive that lies in the main part lateral wall. In the test process of degassing catalytic oxidation, gas is injected through the gas injection pipe, and the gas injection pipe rotates to achieve the purpose of uniform gas injection, so that the test effect is better.

Furthermore, a plurality of air outlet holes are formed in the outer wall of each group of the air injection pipe. So that the injected gas can be uniformly diffused into the soil.

Further, mix the medicine device including being located mix the medicine pole of mixing in medicine intracavity middle part, mix medicine pole top-down circumference and be equipped with a plurality of medicine blades that mix, mix the medicine pole top and run through the stopper is connected with the medicine motor output that mixes that is located the stopper top.

Furthermore, the mutual matching positions of the clamping groove and the sliding block are provided with magnetic sheets which are mutually attracted. The connection between the clamping groove and the sliding block is further enhanced.

Further, the thickening inner wall of recess both sides is inside respectively to be equipped with a set of water service pipe, is used for the intercommunication medicine mixing chamber and recess, and water service pipe and medicine mixing chamber intercommunication one end are the water inlet, and water service pipe and recess intercommunication one end are the delivery port, work as the sliding block not with the draw-in groove connects when joining in marriage that the sliding block blocks the delivery port position, join in marriage with the draw-in groove when joining in marriage the sliding block and then open the delivery port, the inside through-hole that runs through sliding block bottom and inclined plane that is equipped with of sliding block, the through-hole corresponds the inside position department of draw-in groove and is equipped with the honeycomb duct, the honeycomb duct extends to stirring portion is terminal. Make the puddler stir the in-process of soil in the rotation and can carry out the water injection or pour into other liquid into it to make the liquid of pouring into evenly flow out at the stirring in-process, realize the purpose of quick adjustment soil moisture content and pH, improved experimental efficiency and result rate of accuracy.

Furthermore, the same side of the diversion pipe corresponding to the stirring part is provided with a plurality of seepage pipes, and the seepage pipes are internally provided with permeable membranes. And the soil is prevented from blocking the guide pipe.

The beneficial effects of the invention are:

(1) The experimental device can complete various soil experiments, has wide related range, has better experimental effect especially aiming at experiments such as electric diffusion, electric heating coupling, metal ion activation, catalytic oxidation and the like in chemical remediation, and can obtain more accurate experimental results.

(2) The experimental device can synchronously complete the experimental steps of electric diffusion and electric heating coupling through the motor placing plate, the dosing barrel and the stirring rod, is more convenient to adjust the water content and the pH value in soil, completes soil loosening and achieves the purpose of adjustment through injecting liquid into the dosing barrel and then discharging the liquid through the rotating stirring rod, and is reasonable in structure arrangement, convenient and fast in use method, and greatly saves the operation difficulty and the operation time of experimenters.

(3) The experimental device provided by the invention can achieve the purpose of catalytic oxidation by injecting gas in different experimental processes through the gas injection pipe, and meanwhile, the gas can be uniformly diffused in the soil and can be exhausted, so that the variety and novelty of experimental means and the accuracy of experimental results are further improved.

Drawings

FIG. 1 is a schematic view of the overall structure of an experimental apparatus according to the present invention;

FIG. 2 is a schematic view of the interior structure of the base and the main view of the experimental apparatus of the present invention;

FIG. 3 is a schematic diagram of the side view and internal structure of the experimental apparatus of the present invention;

FIG. 4 is a schematic diagram of the internal components of the experimental apparatus according to the present invention.

FIG. 5 is a schematic view of the structure of the medicine-feeding barrel and the stirring rod of the experimental apparatus of the present invention;

FIG. 6 is a schematic diagram of the detailed structure at A in FIG. 5 according to the present invention;

FIG. 7 is a schematic view of the experimental apparatus of the present invention after the dosing barrel and the stirring rod are rotated;

fig. 8 is a schematic diagram of the structure shown at B in fig. 7 according to the present invention.

The device comprises a main body 1, a base 11, an opening 12, a cathode electrode placing plate 13, an anode electrode placing plate 14, a placing hole 14, a base 2, a pH monitor 21, a temperature monitor 22, a humidity monitor 23, a display screen 24, an electric heating plate 25, a medicine adding barrel 3, an outer wall 31, a thickened inner wall 32, an arc groove 321, a groove 322, a fixing block 323, a spring 324, a sliding block 325, a through hole 326, a medicine mixing cavity 33, a limiting block 34, a rotating rod 35, a water pipe 36, a water inlet 361, a water outlet 362, a rotating motor 4, a rotating gear 41, a stirring rod 5, a rotating part 52, a magnetic sheet 51, a rotating shaft 53, a rotating shaft 54, a gear 55, a guide pipe 56, a guide pipe 57-seepage pipe, a 58-seepage pipe, a 6-medicine mixing device 61-medicine mixing rod, a 62-medicine mixing blade 63-medicine mixing motor 7, a gas injection pipe 71, a gear disk 72, a transition gear 74-73-gas injection hole motor 74-73 gas injection hole.

Detailed Description

Example 1

As shown in fig. 1 and 5, an integrated experimental device for soil remediation and activation method research comprises a main body 1 and a base 2 located below the main body 1, wherein an opening 11 is formed above the main body 1, the base 2 is hollow, a cathode electrode placing plate 12 is arranged in the middle of the top surface of the main body 1, anode electrode placing plates 13 are arranged on two sides of the top surface of the main body 1, 5 groups of placing holes 14 are formed in the surfaces of the cathode electrode placing plate 12 and the anode electrode placing plate 13, one group of dosing barrels 3 is respectively arranged below each two groups of placing holes 14 on the cathode electrode placing plate 12, the dosing barrels 3 are arranged in two groups and in parallel, and the dosing barrels 3 are sequentially provided with an outer wall 31, a thickened inner wall 32 and a medicine mixing cavity 33 from outside to inside;

as shown in fig. 2, a pH monitor 21 for monitoring the pH value of soil, a temperature monitor 22 for monitoring the temperature of soil, a humidity monitor 23 for monitoring the humidity of soil, the pH monitor 21, the temperature monitor 22 and the humidity monitor 23 are all monitors for monitoring soil commercially available, sensing ends of the pH monitor 21, the temperature monitor 22 and the humidity monitor 23 extend into the main body 1 after penetrating through the bottom of the main body 1, data output ends of the pH monitor 21, the temperature monitor 22 and the humidity monitor 23 are all electrically connected with a display screen 24 arranged on the outer wall 31 of the base 2, an electric heating plate 25 for heating soil in the main body 1 is arranged on the upper surface inside the base 2, the electric heating plate 25 is a structure of the commercially available electric heating plate which is adjusted in structure appearance to be adapted to the base 2, the electric heating plates 25 are 3 groups and are symmetrically arranged on two sides of the rotating rod 35;

as shown in fig. 3 and 4, the dosing barrels 3 are rotatably connected with the cathode electrode placing plate 12 through the limiting blocks 34 arranged at the tops of the dosing barrels 3, the rotating rods 35 arranged at the bottoms of the dosing barrels 3 penetrate through the bottom of the main body 1 and then are connected with the centers of the upper surfaces of the rotating gears 41 positioned in the base 2, the lower surfaces of one group of the rotating gears 41 are provided with rotating motors 4 for controlling the rotation of the rotating gears, the rotating motors 4 are commercially available three-phase speed reducing motors, the two groups of the rotating gears 41 are meshed with each other and synchronously rotate in opposite directions, the outer wall 31 of each dosing barrel 3 is provided with 4 groups of stirring rods, the stirring rod groups of each dosing barrel 3 are arranged at equal intervals from top to bottom, and the stirring rod groups of the two dosing barrels 3 are arranged in a staggered manner;

as shown in fig. 5-8, each stirring rod group includes 4 groups of stirring rods 5 arranged at equal intervals in the circumferential direction, each stirring rod 5 includes a circular rotating portion 52 and a long arc-shaped stirring portion 51, the rotating portion 52 is embedded inside the outer wall 31 and rotatably connected with the outer wall 31 through a set of rotating shafts 53, a set of arc-shaped grooves 321 is arranged at the position where each group of rotating portions 52 contacts the thickened inner wall 32, so that the rotating portion 52 can rotate in the arc-shaped grooves 321, a set of grooves 322 are arranged inside the thickened inner wall 32 corresponding to each group of arc-shaped grooves 321, a fixing block 323 is arranged at the bottom inside of each groove 322, the fixing block 323 is connected with a sliding block 325 close to one end of each arc-shaped groove 321 through a set of springs 324, the sliding block 325 is slidably and hermetically connected with the grooves 322, the outer wall 31 of the rotating portion 52 is provided with a slot 54 mutually matched with the tail end of the sliding block 325, for fixing and limiting the rotating portion 52 to prevent the rotating portion 52 from continuously rotating through the slot 54 and the sliding block 325, the slot 54 and the slot 325 are both inclined surfaces, the inclined surfaces of the magnetic sheets 55 are arranged at the same direction as the magnetic sheets 51;

as shown in fig. 3, a medicine mixing device 6 is arranged inside the medicine adding barrel 3, the medicine mixing device 6 comprises a medicine mixing rod 61 located in the middle of the medicine mixing cavity 33, 6 groups of medicine mixing blades 62 are circumferentially arranged on the medicine mixing rod 61 from top to bottom, the upper part of the medicine mixing rod 61 penetrates through the limiting block 34 and is connected with the output end of a medicine mixing motor 63 located above the limiting block 34, and the medicine mixing motor 63 is a gear speed reduction motor sold in the market;

as shown in fig. 1-3, one side of the main body 1 is provided with 4 sets of gas injection pipes 7, the gas injection pipes 7 are symmetrically arranged on two sides of the cathode electrode placing plate 12, the front end of each set of gas injection pipe 7 extends into the main body 1, the rear end of each gas injection pipe 7 is sleeved with a gear plate 71 at the outer position of the main body 1, the gear plates 71 of the two sets of gas injection pipes 7 located on the same side are engaged with and synchronously rotate with a transition gear 72 located on the outer side wall of the main body 1, the transition gear 72 is driven to rotate by a gas injection motor 73 located on the outer side wall of the main body 1, the gas injection motor 73 is a commercially available gear reduction motor, and the outer wall 31 of each set of gas injection pipes 7 is provided with a plurality of gas outlets 74.

Example 2

This embodiment is substantially the same as embodiment 1, except that: the inner structure of the medicine adding barrel 3 is arranged differently.

Specifically, as shown in fig. 5-8, a set of water pipes 36 is respectively disposed inside the thickened inner walls 32 on two sides of the groove 322 to communicate the medicine mixing chamber 33 and the groove 322, a water inlet 361 is disposed at one end of the water pipes 36 communicating with the medicine mixing chamber 33, a water outlet 362 is disposed at one end of the water pipes 36 communicating with the groove 322, when the sliding block 325 is not coupled with the engaging groove 54, the sliding block 325 seals and blocks the position of the water outlet 362, when the sliding block 325 is coupled with the engaging groove 54, the water outlet 362 is opened, a through hole 326 penetrating through the bottom of the sliding block 325 and the inclined surface is disposed inside the sliding block 325, a flow guide pipe 56 is disposed at a position corresponding to the inside of the engaging groove 54, the flow guide pipe 56 extends to the end of the stirring portion 51, 5 sets of seepage pipes 57 are disposed on the same side of the flow guide pipe 56 corresponding to the stirring portion 51, and a seepage film 58 is disposed in the seepage pipe 57.

Example 3

This embodiment is substantially the same as embodiment 1, except that: the stirring rod groups are arranged in different numbers.

Add stopper 34 that explosive barrel 3 was equipped with through its top and cathode electrode place board 12 and rotate and be connected, the dwang 35 that adds explosive barrel 3 bottom and be equipped with runs through behind the 1 bottom of main part with be located 2 inside rotating gear 41 upper surface centers of base department and be connected, one of them a set of rotating gear 41 lower surface is equipped with and is used for controlling its pivoted rotation motor 4, it is commercially available three-phase gear motor to rotate motor 4, two sets of rotating gear 41 intermeshing is synchronous rotates in opposite direction, every 3 outer walls 31 of explosive barrel all are equipped with 3 puddler groups of group, every puddler group top-down equidistant setting of adding explosive barrel 3, and two puddler groups of adding explosive barrel 3 crisscross the setting.

Example 4

This embodiment is substantially the same as embodiment 1, except that: the stirring rod groups are different in number.

Add stopper 34 that medicine bucket 3 was equipped with through its top and negative electrode place board 12 and rotate and be connected, the dwang 35 that adds medicine bucket 3 bottom and be equipped with runs through 1 bottom of main part back and is connected with the rotating gear 41 upper surface center department that is located 2 inside bases, one of them group rotating gear 41 lower surface is equipped with and is used for controlling its pivoted rotation motor 4, it is commercially available three-phase gear motor to rotate motor 4, two sets of rotating gear 41 intermeshing is synchronous rotates in the opposite direction, 3 outer walls 31 of every medicine bucket all are equipped with 5 puddler groups of group, every puddler group top-down equidistant setting of medicine bucket 3 that adds, and two puddler groups crisscross setting of medicine bucket 3 that add.

The working principle is as follows: the following is a detailed description of the specific working principle of the experimental apparatus of the present invention.

When the soil sample stirring machine is used, firstly, a taken soil sample is placed in the main body 1, at this time, large agglomerates may exist in soil, and the soil sample needs to be loosened, so that the rotating motor 4 is turned on to drive the rotating gears 41 to rotate, the two groups of rotating gears 41 are meshed to rotate so as to drive the rotating rod 35 to rotate, the rotating rod 35 drives the two groups of medicine adding barrels 3 to synchronously rotate in opposite directions, at this time, the stirring rod group arranged on the outer wall of the medicine adding barrel 3 starts to rotate, the rotating shaft 53 of the rotating part 52 rotates relative to the outer wall 31, the rotating part 52 rotates in the arc-shaped groove 321 to drive the stirring part 51 to stir soil, the stirring rod 5 is subjected to the resistance of soil in the rotating process to be in the state shown in fig. 5, when the clamping groove 54 of the rotating part 52 rotates to the position corresponding to the sliding block 325, the sliding block 325 is clamped with the clamping groove 322 under the action of the spring 324, then the sliding block 325 is clamped with the clamping groove 54, and the stirring rod 5 is prevented from continuously rotating through the limiting action of the magnetic sheet 55 and the clamping groove 54, so as to continuously stir the soil;

when the water content and the pH value in the soil need to be adjusted to reach an initial state of an experiment, a top cover used for containing a medicine mixing motor 63 at the top of a medicine adding barrel 3 is opened, water or a pH adjusting agent needing to be adjusted to the soil is added into the medicine mixing cavity 33, the solution enters the water through pipe 36 through a water inlet 361 and then flows into the groove 322 through a water outlet 362, then flows into the guide pipe 56 through a through hole 326 arranged on a sliding block 325, is discharged into the soil through the permeable membranes 58 by the seepage pipes 57 and uniformly goes deep into each position in the soil along with the rotation of the stirring rod 5, then a metal ion solution is added into the medicine adding barrel 3, the medicine mixing motor 63 is started to drive the medicine mixing rod 61 to rotate, the solution in the medicine adding barrel 3 is uniformly stirred through the medicine mixing blades 62, and the medicine is added into the soil in the same way;

after the liquid is completely injected, the next experiment needs to be carried out, and at this time, the stirring rod 5 in the rotating process interferes with the positions of the cathode electrode and the anode electrode, so that the two groups of rotating gears 41 are rotated reversely by the reverse rotation motor 4 to drive the medicine adding barrel 3 and the stirring rod 5 to rotate reversely, at this time, the stirring part 51 rotates reversely under the thrust of soil, the rotating part 52 rotates reversely in the arc-shaped groove 321, one side of the clamping groove 54 can push the sliding block 325 to be separated from the inside of the clamping groove 54 due to the inclined arrangement of the clamping groove 54, and simultaneously, the clamping groove returns to the inside of the groove 322 under the action of the spring 324 and blocks the peak value of the position of the water outlet 326 to flow out of the medicine adding barrel 3, and the rotation is stopped until each group of stirring rods 5 is attached to the outer wall of the medicine adding barrel 3;

put cathode electrode into cathode electrode and place board 12 afterwards, put anode electrode into anode electrode and place board 13 in, carry out electronic diffusion, open electrical heating board 25 simultaneously and carry out electronic diffusion-electrical heating coupling experiment, when needs to carry out catalytic oxidation reaction to main part 1 inside soil injection oxygen or ozone, begin the gas injection through connecting gas injection pipe 7, open the gas injection motor simultaneously and make it drive two sets of toothed disc 71 and rotate, thereby drive transition gear 72 under the meshing effect and rotate, thereby realize the synchronous rotation of two sets of outlet ducts 7, make gas inside by even diffusion to soil in venthole 74.

Examples of the experiments

The experimental device in the embodiment 2-4 of the invention is applied to carry out simulation experiments, the simulation experiments are to repair soil through ferrous ion activation, and observe the concentration of organic pollutant phenanthrene in the repaired soil, the experimental method comprises the steps of water content adjustment, pH value adjustment, ferrous ion medicament addition, electric diffusion and electric heating coupling in sequence according to the method, and a conventional experimental device is used as a comparison, the conventional experimental device does not comprise the stirring rod 5 and the medicine mixing device 6, a medicine adding barrel adopts a commercially available leakage medicine adding barrel, and the experimental results are shown in table 1.

TABLE 1 remediation Effect of the Experimental apparatuses of examples 2 to 4 on soil

The results in the table show that compared with the control group, the experimental device provided by the invention has an obvious improvement on the soil remediation effect, which shows that the experimental device provided by the invention plays an important role in soil remediation and activation, and greatly improves the accuracy of the experimental result. On the other hand, it is understood from the experimental data of comparative examples 2 to 4 that the soil restoration effect in example 2 is the best, probably because the soil loosening effect is the best in the stirring process of example 2, and thus the action of the agent and the electrokinetic diffusion is promoted, so that the structural arrangement of example 2 is most reasonable.

Claims (9)

1. An integrated experimental device for soil restoration and activation method research is characterized by comprising a main body (1) and a base (2) positioned below the main body (1), wherein an opening (11) is formed above the main body (1), the base (2) is arranged in a hollow manner, a cathode electrode placing plate (12) is arranged in the middle of the top surface of the main body (1), anode electrode placing plates (13) are arranged on two sides of the top surface of the main body (1), a plurality of placing holes (14) are formed in the surfaces of the cathode electrode placing plate (12) and the anode electrode placing plate (13), a group of medicine adding barrels (3) are respectively arranged below each two groups of placing holes (14) on the cathode electrode placing plate (12), the medicine adding barrels (3) are arranged in two groups and in parallel, and the medicine adding barrels (3) are sequentially provided with an outer wall (31), a thickened inner wall (32) and a medicine mixing cavity (33) from outside to inside,

the medicine adding barrel (3) is rotatably connected with the cathode electrode placing plate (12) through a limiting block (34) arranged at the top of the medicine adding barrel, a rotating rod (35) arranged at the bottom of the medicine adding barrel (3) penetrates through the bottom of the main body (1) and is connected with the center of the upper surface of a rotating gear (41) positioned inside the base (2), a group of rotating gears (41) is arranged on the lower surface of the rotating gear (41) and is used for controlling a rotating motor (4) to rotate, two groups of rotating gears (41) are meshed with each other and rotate in opposite directions synchronously, each outer wall (31) of the medicine adding barrel (3) is provided with a plurality of stirring rod groups, the stirring rod groups of each medicine adding barrel (3) are arranged at equal intervals from top to bottom, and the stirring rod groups of the two medicine adding barrels (3) are arranged in a staggered manner,

each stirring rod group comprises 4 groups of stirring rods (5) which are circumferentially arranged at equal intervals, each stirring rod (5) comprises a circular rotating part (52) and a long arc-shaped stirring part (51), each rotating part (52) is embedded in the outer wall (31) and is rotationally connected with the outer wall (31) through a group of rotating shafts (53), each rotating part (52) is provided with a group of arc-shaped grooves (321) at the position where each thickening inner wall (32) is contacted, each rotating part (52) can rotate in each arc-shaped groove (321), each thickening inner wall (32) corresponds to each group, each groove (322) is formed in the inner part of each arc-shaped groove (321), each fixing block (323) is arranged at the inner bottom of each groove (322), each fixing block (323) is connected with the sliding block (325) close to one end of each arc-shaped groove (321) through a group of springs (324), each sliding block (325) is connected with each groove (322) in a sliding mode in a sealing mode, each rotating part (52) outer wall (31) is provided with a clamping groove (54) which is matched with the tail end of each sliding block (325) in a rotating mode, each sliding block (325) is arranged at the position, each rotating part (52) and is matched with a limiting block (325), and each sliding block (325), and the inclined plane (325) is arranged at the inclined plane (325), and the inclined plane (325) is used for preventing the inclined part (325), the inclination directions of the clamping groove (54) and the sliding block (325) are the same as the inclination direction of the stirring part (51),

the medicine mixing device (6) is arranged in the medicine adding barrel (3), and a plurality of groups of gas injection pipes (7) are arranged on one side of the main body (1).

2. The integrated experimental device for soil remediation and activation method research according to claim 1, wherein a pH monitor (21) for monitoring the pH value of soil, a temperature monitor (22) for monitoring the temperature of soil, and a humidity monitor (23) for monitoring the humidity of soil are arranged on the bottom of the main body (1) and attached to the inside of the base (2), the sensing ends of the pH monitor (21), the temperature monitor (22) and the humidity monitor (23) extend into the main body (1) after penetrating through the bottom of the main body (1), and the data output ends of the pH monitor (21), the temperature monitor (22) and the humidity monitor (23) are electrically connected with a display screen (24) arranged on the outer wall (31) of the base (2).

3. The integrated experimental device for researching the soil remediation and activation method according to claim 1, wherein the upper surface inside the base (2) is provided with electric heating plates (25) for heating the soil inside the main body (1), the electric heating plates (25) are 3 groups, and the electric heating plates are symmetrically arranged on two sides of the rotating rod (35).

4. The integrated experimental device for researching the soil remediation and activation method according to claim 1, wherein the gas injection pipes (7) are arranged in 4 groups, the gas injection pipes are arranged on two sides of the cathode electrode placing plate (12) in a pairwise symmetry manner, the front end of each group of gas injection pipes (7) extends into the main body (1), the rear ends of the gas injection pipes (7) are sleeved with gear discs (71) at positions outside the main body (1), the gear discs (71) of the two groups of gas injection pipes (7) on the same side are meshed with transition gears (72) on the outer side walls of the main body (1) and synchronously rotate, and the transition gears (72) are driven to rotate by gas injection motors (73) on the outer side walls of the main body (1).

5. The integrated experimental device for researching the soil remediation and activation method according to claim 1, wherein each set of the outer wall (31) of the gas injection pipe (7) is provided with a plurality of gas outlet holes (74).

6. The integrated experimental device for soil remediation and activation method research according to claim 1, wherein the medicine mixing device (6) comprises a medicine mixing rod (61) located in the middle of the inside of the medicine mixing cavity (33), a plurality of medicine mixing blades (62) are circumferentially arranged on the medicine mixing rod (61) from top to bottom, and the upper portion of the medicine mixing rod (61) penetrates through the limiting block (34) and is connected with the output end of a medicine mixing motor (63) located above the limiting block (34).

7. The integrated experimental device for the research of the soil remediation and activation method according to claim 1, wherein the mutually-matched positions of the clamping groove (54) and the sliding block (325) are provided with mutually-attracted magnetic sheets (55).

8. The integrated experimental device for the soil remediation and activation method research as claimed in claim 1, wherein a group of water pipes (36) are respectively arranged inside the thickened inner walls (32) on two sides of the groove (322) and used for communicating the medicine mixing cavity (33) with the groove (322), one end of each water pipe (36) communicated with the medicine mixing cavity (33) is a water inlet (361), one end of each water pipe (36) communicated with the groove (322) is a water outlet (362), when the sliding block (325) is not connected with the clamping groove (54), the sliding block (325) blocks the position of the water outlet (362) in a sealing manner, when the sliding block (325) is connected with the clamping groove (54), the water outlet (362) is opened, a through hole (326) penetrating through the bottom of the sliding block (325) and the inclined surface is arranged inside the sliding block (325), a flow guide pipe (56) is arranged at a position, corresponding to the inside of the clamping groove (54), of the through hole (326), and the flow guide pipe (56) extends to the tail end of the stirring part (51).

9. The integrated experimental device for the soil remediation and activation method research according to claim 8, wherein the same side of the stirring part (51) where the draft tube (56) is located is provided with a plurality of seepage tubes (57), and the seepage tubes (57) are internally provided with a seepage membrane (58).

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