Ecological remediation device for heavy metal contaminated soil

Abstract

The utility model discloses an ecological remediation device for heavy metal contaminated soil. The ecological remediation device for the heavy metal contaminated soil comprises an anode electrolytic tank, a cathode electrolytic tank, a plurality of anode bars, a plurality of cathode bars, a first actuating assembly, a second actuating assembly, a first liquid adding assembly and a second liquid adding assembly. A plurality of anode bars are arranged in the anode electrolytic tank in a linear array manner; the plurality of cathode bars are arranged in the cathode electrolytic tank in a linear array manner; the first actuating assembly is connected to the plurality of anode bars; the second actuating assembly is connected to the plurality of cathode bars; the first liquid adding assembly is communicated with the anode electrolytic tank; the second liquid adding assembly is communicated with the cathode electrolytic tank; one end of each anode bar and one end of each cathode bar are respectively provided with a conductive slip ring, the conductive slip rings arranged on the anode bars are connected to the positive pole of a power supply, and the conductive slip rings arranged on the cathode bars are connected to the negative pole of the power supply. The ecological remediation device for the heavy metal contaminated soil eliminates the phenomena of activation polarization and resistance polarization, and high remediation efficiency is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of soil remediation, and particularly relates to a heavy metal contaminated soil ecological remediation device. BACKGROUND

[0002] With the rapid development of industry and agriculture, the soil environment is facing an increasingly severe threat of heavy metal pollution. The main pollution migration pathways include wastewater irrigation, solid waste leachate penetration, atmospheric dry and wet deposition and other exogenous input processes. Due to its unique physical and chemical properties, heavy metal pollutants exhibit complex occurrence form diversity and multi-phase migration and transformation characteristics. Moreover, heavy metal pollution has significant biological accumulation and delayed toxicity effects.

[0003] Electrokinetic remediation technology is an advanced soil remediation method that uses electric field to drive the migration, enrichment and ultimate removal of heavy metal ions in soil. The core technical principle is based on electrochemistry and electrokinetics. By accurately controlling the electric field parameters and soil conditions, efficient and controllable soil remediation is achieved. At present, when the electrokinetic remediation equipment is used to remediate soil, the phenomena of activation polarization and resistance polarization may occur, which leads to the weakening of the electric current and thus gradually reduces the remediation efficiency. CONTENT OF THE INVENTION

[0004] The present application provides a heavy metal contaminated soil ecological remediation device, which solves the technical problem that the activation polarization and resistance polarization phenomena in the prior art lead to the weakening of the electric current and thus gradually reduces the remediation efficiency.

[0005] The heavy metal contaminated soil ecological restoration device provided by the embodiment of the present application comprises: an anode electrolytic cell; a cathode electrolytic cell, which is arranged in parallel to the anode electrolytic cell; a plurality of anode rods, which are arranged in a linear array in the anode electrolytic cell, and the two ends of each anode rod are rotatably connected to the top and bottom of the anode electrolytic cell; a plurality of cathode rods, which are arranged in a linear array in the cathode electrolytic cell, and the two ends of each cathode rod are rotatably connected to the top and bottom of the cathode electrolytic cell; a first actuating assembly, which is connected to the plurality of anode rods and is configured to drive the plurality of anode rods to rotate; a second actuating assembly, which is connected to the plurality of cathode rods and is configured to drive the plurality of cathode rods to rotate; a first liquid adding assembly, which is connected to the anode electrolytic cell and is used for adding an anode buffer solution or water to the anode electrolytic cell; a second liquid adding assembly, which is connected to the cathode electrolytic cell and is used for adding an anode buffer solution or water to the cathode electrolytic cell; a plurality of conductive slip rings, each of which is installed at one end of each of the anode rods and the cathode rods, and the conductive slip ring installed at the anode rod is connected to the positive pole of a power supply, and the conductive slip ring installed at the cathode rod is connected to the negative pole of the power supply.

[0006] In a possible implementation, the first actuating assembly comprises a first motor, a first pulley, a plurality of second pulleys and a plurality of first belts; each of the plurality of second pulleys is a double-groove pulley, and each of the plurality of second pulleys is correspondingly installed at the upper end of each of the plurality of anode rods, and two adjacent second pulleys are connected in transmission by the first belt; the first pulley is installed on the rotating shaft of the first motor, and the first pulley is connected to one of the outermost second pulleys by the first belt.

[0007] In a possible implementation, the second actuating assembly comprises a second motor, a third pulley, a plurality of fourth pulleys and a plurality of second belts; each of the plurality of fourth pulleys is a double-groove pulley, and each of the plurality of fourth pulleys is correspondingly installed at the upper end of each of the plurality of cathode rods, and two adjacent fourth pulleys are connected in transmission by the second belt; the third pulley is installed on the rotating shaft of the second motor, and the third pulley is connected to one of the outermost fourth pulleys by the second belt.

[0008] In a possible implementation, the device further comprises rotating assemblies, the top and bottom surfaces of the inner walls of the anode electrolytic cell are provided with a plurality of the rotating assemblies, the two ends of each of the anode rods are fixedly connected to the rotating assemblies, the top and bottom surfaces of the inner walls of the cathode electrolytic cell are provided with a plurality of the rotating assemblies, the two ends of each of the cathode rods are fixedly connected to the rotating assemblies; each of the rotating assemblies comprises a bearing seat, a bearing and a bearing shaft; the bearing seat is used for fixedly connecting to the top and bottom surfaces of the inner walls of the anode electrolytic cell and the top and bottom surfaces of the inner walls of the cathode electrolytic cell; the bearing is installed in the bearing seat; the bearing shaft is provided with a bearing blind hole extending in the axial direction and used for extending into the anode rod or the cathode rod, and the other end of the bearing shaft is connected to the bearing; and the bearing shaft located on the top surface of the inner wall of the anode electrolytic cell is connected to the second belt pulley through the corresponding anode electrolytic cell, and the bearing shaft located on the top surface of the inner wall of the cathode electrolytic cell is connected to the fourth belt pulley through the corresponding cathode electrolytic cell.

[0009] In a possible implementation, the first liquid adding assembly comprises a first storage tank, a first liquid adding pipeline, a second liquid adding pipeline, a third liquid adding pipeline and a first water pump; the first storage tank is used for containing an anode buffer solution; the two ends of the first liquid adding pipeline are respectively connected to the first storage tank and the inlet of the first water pump, and the first liquid adding pipeline is provided with a valve; the two ends of the second liquid adding pipeline are respectively connected to a water source and the inlet of the first water pump, and the second liquid adding pipeline is provided with a valve; the two ends of the third liquid adding pipeline are respectively connected to the outlet of the first water pump and the anode electrolytic cell.

[0010] In a possible implementation, the second liquid adding assembly comprises a second storage tank, a fourth liquid adding pipeline, a fifth liquid adding pipeline, a sixth liquid adding pipeline and a second water pump; the second storage tank is used for containing a cathode buffer solution; the two ends of the fourth liquid adding pipeline are respectively connected to the second storage tank and the inlet of the second water pump, and the fourth liquid adding pipeline is provided with a valve; the two ends of the fifth liquid adding pipeline are respectively connected to a water source and the inlet of the second water pump, and the fifth liquid adding pipeline is provided with a valve; the two ends of the sixth liquid adding pipeline are respectively connected to the outlet of the second water pump and the cathode electrolytic cell.

[0011] In a possible implementation, the device for ecological remediation of heavy metal contaminated soil further comprises a first recovery assembly and a second recovery assembly; the first recovery assembly is connected to the anode electrolytic cell and used for recovering the liquid in the anode electrolytic cell; the second recovery assembly is connected to the cathode electrolytic cell and used for recovering the liquid in the cathode electrolytic cell.

[0012] In a possible implementation, the first recovery assembly comprises a first recovery tank, a first recovery pipeline, a second recovery pipeline and a third water pump; two ends of the first recovery pipeline are respectively connected to the anode electrolytic cell and an inlet of the third water pump, and the first recovery pipeline is provided with a valve; two ends of the second recovery pipeline are respectively connected to the first recovery tank and an outlet of the third water pump.

[0013] In a possible implementation, the second recovery assembly comprises a second recovery tank, a third recovery pipeline, a fourth recovery pipeline and a fourth water pump; two ends of the third recovery pipeline are respectively connected to the cathode electrolytic cell and an inlet of the fourth water pump, and the third recovery pipeline is provided with a valve; two ends of the fourth recovery pipeline are respectively connected to the second recovery tank and an outlet of the fourth water pump.

[0014] In a possible implementation, the heavy metal contaminated soil ecological restoration device further comprises a solar panel, a storage battery electrically connected to the solar panel, and a plurality of conductive slip rings electrically connected to the storage battery, and an inverter, an input end of the inverter being connected to the storage battery, and an output end of the inverter being connected to the first actuating assembly and the second actuating assembly.

[0015] The technical scheme provided in the embodiments of the present application has at least the following technical effects:

[0016] The embodiment of the present application provides a heavy metal contaminated soil ecological restoration device, which comprises an anode electrolytic cell, a cathode electrolytic cell, a plurality of anode rods, a plurality of cathode rods, a first actuating assembly, a second actuating assembly, a first liquid feeding assembly and a second liquid feeding assembly; when the heavy metal contaminated soil ecological restoration device works, the first liquid feeding assembly feeds anode buffer solution into the anode electrolytic cell, the second liquid feeding assembly feeds cathode buffer solution into the cathode electrolytic cell, the plurality of anode rods are connected to the positive pole of a power supply, the plurality of cathode rods are connected to the negative pole of the power supply, an electric field is formed between the anode electrolytic cell and the cathode electrolytic cell, so that heavy metal cations in the soil migrate towards the negative pole electrolytic cell, and oxygen is generated near the anode rods, and hydrogen is generated near the cathode rods; the first actuating assembly drives the plurality of anode rods to slowly rotate, the second actuating assembly drives the plurality of cathode rods to slowly rotate, so as to prevent gas from covering the anode rods and the cathode rods, thereby avoiding the influence of the gas on the conductivity of the anode rods and the cathode rods, and eliminating the activation polarization phenomenon; meanwhile, since the plurality of anode rods and the plurality of cathode rods slowly rotate, insoluble salts and impurities are not easy to adhere to the anode rods and the cathode rods, so as to slow down the occurrence of the resistance polarization phenomenon; and after the heavy metal contaminated soil ecological restoration device works for a preset time, the first actuating assembly feeds water into the anode electrolytic cell, the second liquid feeding assembly feeds water into the cathode electrolytic cell, the first actuating assembly drives the plurality of anode rods to rapidly rotate and constantly change the rotating direction, and the second actuating assembly drives the plurality of cathode rods to rapidly rotate and constantly change the rotating direction, so that the insoluble salts and impurities adhered to the anode rods and the cathode rods are separated, thereby eliminating the resistance polarization phenomenon. Therefore, the heavy metal contaminated soil ecological restoration device eliminates the activation polarization and the resistance polarization phenomenon, maintains the basic constancy of the current, and can realize a higher restoration efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0018] Figure 1 The structural schematic diagram of the heavy metal contaminated soil ecological restoration device provided by the embodiment of the present application is shown in the figure.

[0019] Figure 2 The connection schematic diagram of the first actuating assembly and the plurality of anode rods provided by the embodiment of the present application is shown in the figure.

[0020] Figure 3 The connection schematic diagram of the second actuating assembly and the plurality of cathode rods provided by the embodiment of the present application is shown in the figure.

[0021] Figure 4A structural schematic diagram of a rotating assembly provided by the embodiment of the present application.

[0022] Reference numerals: 100-anode electrolytic cell; 200-cathode electrolytic cell; 300-anode rod; 400-cathode rod; 500-first actuating assembly; 510-first motor; 520-first pulley; 530-second pulley; 540-first belt; 600-second actuating assembly; 610-second motor; 620-third pulley; 630-fourth pulley; 640-second belt; 700-first liquid adding assembly; 710-first storage tank; 720-first liquid adding pipeline; 730-second liquid adding pipeline; 740-third liquid adding pipeline; 750-first water pump; 800-second liquid adding assembly; 810-second storage tank; 820-fourth liquid adding pipeline; 830-fifth liquid adding pipeline; 840-sixth liquid adding pipeline; 850-second water pump; 900-conductive slip ring; 1000-rotating assembly; 1010-bearing seat; 1020-bearing; 1030-bearing shaft; 1031-bearing blind hole; 1100-first recovery assembly; 1110-first recovery tank; 1120-first recovery pipeline; 1130-second recovery pipeline; 1140-third water pump; 1200-second recovery assembly; 1210-second recovery tank; 1220-third recovery pipeline; 1230-fourth recovery pipeline; 1240-fourth water pump; 1300-solar panel; 1400-battery; 1500-inverter; 1600-direct current power supply. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0024] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0025] This application provides an ecological remediation device for heavy metal contaminated soil, such as... Figures 1 to 4 As shown, the heavy metal contaminated soil ecological remediation device includes an anode electrolytic cell 100, a cathode electrolytic cell 200, multiple anode rods 300, multiple cathode rods 400, a first actuation component 500, a second actuation component 600, a first liquid addition component 700, and a second liquid addition component 800.

[0026] The cathode electrolysis cell 200 is set parallel to the anode electrolysis cell 100, and the soil to be repaired is located between the anode electrolysis cell 100 and the cathode electrolysis cell 200.

[0027] A plurality of anode rods 300 are arranged in a linear array within an anodic electrolysis cell 100, with each anode rod 300 rotatably connected at both ends to the top and bottom of the anodic electrolysis cell 100. Similarly, a plurality of cathode rods 400 are arranged in a linear array within a cathodic electrolysis cell 200, with each cathode rod 400 rotatably connected at both ends to the top and bottom of the cathodic electrolysis cell 200. The plurality of anode rods 300 and cathode rods 400 create an electric field between the anodic electrolysis cell 100 and the cathodic electrolysis cell 200, allowing heavy metal cations in the soil to move and accumulate under the influence of this electric field. For example, the anode rods 300 can be graphite rods, and the cathode rods 400 can be copper rods.

[0028] The first actuating assembly 500 is connected to the plurality of anode rods 300 and is configured to drive the plurality of anode rods 300 to rotate. The second actuating assembly 600 is connected to the plurality of cathode rods 400 and is configured to drive the plurality of cathode rods 400 to rotate. When the heavy metal contaminated soil ecological remediation device is working, the first actuating assembly 500 drives the plurality of anode rods 300 to rotate slowly, and the second actuating assembly 600 drives the plurality of cathode rods 400 to rotate slowly, so as to prevent gas from covering the anode rods 300 and the cathode rods 400, thereby avoiding the influence of the gas on the conductivity of the anode rods 300 and the cathode rods 400, and eliminating the activation polarization phenomenon. At the same time, since the plurality of anode rods 300 and the plurality of cathode rods 400 rotate slowly, insoluble salts and impurities are not easy to adhere to the anode rods 300 and the cathode rods 400, thereby slowing down the occurrence of the resistance polarization phenomenon.

[0029] The first liquid adding assembly 700 is connected to the anode electrolytic cell 100 and is used for adding anode buffer solution or water to the anode electrolytic cell 100. The second liquid adding assembly 800 is connected to the cathode electrolytic cell 200 and is used for adding anode buffer solution or water to the cathode electrolytic cell 200. Before the heavy metal contaminated soil ecological remediation device formally carries out soil remediation work, the first liquid adding assembly 700 delivers anode buffer solution to the anode electrolytic cell 100, and the second liquid adding assembly 800 delivers cathode buffer solution to the cathode electrolytic cell 200. Exemplarily, the anode buffer solution can be a citric acid solution, and the cathode buffer solution can be an ethylenediaminetetraacetic acid solution. Moreover, after the heavy metal contaminated soil ecological remediation device works for a preset time (for example, 8 hours), the anode buffer solution and the cathode buffer solution are pumped out, the first actuating assembly 500 delivers water to the anode electrolytic cell 100, the second liquid adding assembly 800 delivers water to the cathode electrolytic cell 200, the first actuating assembly 500 drives the plurality of anode rods 300 to rotate rapidly and constantly changes the rotating direction, and the second actuating assembly 600 drives the plurality of cathode rods 400 to rotate rapidly and constantly changes the rotating direction, so as to make the insoluble salts and impurities adhered to the anode rods 300 and the cathode rods 400 separate, thereby eliminating the resistance polarization phenomenon.

[0030] The end of each anode rod 300 and the end of each cathode rod 400 are each provided with a conductive slip ring 900, and the conductive slip ring 900 installed on the anode rod 300 is connected to the positive pole of the power supply, and the conductive slip ring 900 installed on the cathode rod 400 is connected to the negative pole of the power supply. The conductive slip ring 900 can keep the anode rod 300 electrically connected to the positive pole of the power supply and keep the cathode rod 400 electrically connected to the negative pole of the power supply during the rotation of the anode rod 300 and the cathode rod 400. The power supply can be a direct current power supply 1600 connected to an alternating current power supply 1500 as shown in FIG. 1. Figure 1

[0031] ​In conclusion, the heavy metal contaminated soil ecological remediation device can avoid the generation of activation polarization and resistance polarization phenomena during soil remediation, maintain a constant current, and thus achieve high remediation efficiency.

[0032] As shown in Figure 2 Some embodiments of the present application provide a specific structure of the first actuating assembly 500. The first actuating assembly 500 includes a first motor 510, a first pulley 520, a plurality of second pulleys 530, and a plurality of first belts 540. The plurality of second pulleys 530 are double-groove pulleys, and the plurality of second pulleys 530 are respectively installed on the upper ends of the plurality of anode rods 300. Adjacent two second pulleys 530 are connected by the first belt 540. The first pulley 520 is installed on the rotating shaft of the first motor 510, and the first pulley 520 is connected to one of the outermost second pulleys 530 by the first belt 540.

[0033] The first pulley 520, the plurality of second pulleys 530, and the plurality of first belts 540 transmit the power of the first motor 510 to each anode rod 300, so that the plurality of anode rods 300 rotate simultaneously. Specifically, taking the orientation shown in Figure 2 The rotating shaft of the first motor 510 drives the first pulley 520 to rotate, the first pulley 520 drives the leftmost second pulley 530 through the first belt 540, and the leftmost second pulley 530 transmits power to the plurality of second pulleys 530 to the right of it through the first pulley 520 until the rightmost second pulley 530.

[0034] As shown in Figure 3 Some embodiments of the present application provide a specific structure of the second actuating assembly 600. The second actuating assembly 600 includes a second motor 610, a third pulley 620, a plurality of fourth pulleys 630, and a plurality of second belts 640. The plurality of fourth pulleys 630 are double-groove pulleys, and the plurality of fourth pulleys 630 are respectively installed on the upper ends of the plurality of cathode rods 400. Adjacent two fourth pulleys 630 are connected by the second belt 640. The third pulley 620 is installed on the rotating shaft of the second motor 610, and the third pulley 620 is connected to one of the outermost fourth pulleys 630 by the second belt 640.

[0035] The third pulley 620, the plurality of fourth pulleys 630, and the plurality of second belts 640 transmit the power of the second motor 610 to each cathode rod 400, so that the plurality of cathode rods 400 rotate simultaneously. Specifically, taking the orientation shown in Figure 3Taking the orientation shown as an example, the shaft of the second motor 610 drives the third pulley 620 to rotate. The third pulley 620 drives the leftmost fourth pulley 630 through the second belt 640. The leftmost fourth pulley 630 transmits power to multiple fourth pulleys 630 on its right through the second pulley 530 until the rightmost fourth pulley 630.

[0036] like Figures 2 to 4 As shown, in some embodiments of this application, the heavy metal contaminated soil ecological remediation device further includes a rotating assembly 1000; multiple rotating assemblies 1000 are installed on the top and bottom surfaces of the inner wall of the anode electrolysis cell 100, and both ends of each anode rod 300 are fixedly connected to the rotating assembly 1000; multiple rotating assemblies 1000 are installed on the top and bottom surfaces of the inner wall of the cathode electrolysis cell 200, and both ends of each cathode rod 400 are fixedly connected to the rotating assembly 1000. The rotating assembly 1000 is used to support the rotation of the anode rod 300 within the anode electrolysis cell 100 and to support the rotation of the cathode rod 400 within the cathode electrolysis cell 200.

[0037] Each rotating assembly 1000 includes a bearing housing 1010, a bearing 1020, and a bearing shaft 1030. The bearing housing 1010 is fixedly connected to the top and bottom surfaces of the inner wall of the anodic electrolytic cell 100 and the top and bottom surfaces of the inner wall of the cathodic electrolytic cell 200; the bearing 1020 is installed inside the bearing housing 1010; one end of the bearing shaft 1030 is provided with a bearing blind hole 1031 extending axially and allowing the anode rod 300 or cathode rod 400 to extend into it, and the other end of the bearing shaft 1030 is connected to the bearing 1020; the bearing shaft 1030 located on the top surface of the inner wall of the anodic electrolytic cell 100 passes through the corresponding anodic electrolytic cell 100 and is connected to the second pulley 530, and the bearing shaft 1030 located on the top surface of the inner wall of the cathodic electrolytic cell 200 passes through the corresponding cathodic electrolytic cell 200 and is connected to the fourth pulley 630.

[0038] Some embodiments of this application provide a specific structure of the first liquid addition assembly 700, see reference... Figure 1 The first liquid addition assembly 700 includes a first storage tank 710, a first liquid addition pipeline 720, a second liquid addition pipeline 730, a third liquid addition pipeline 740, and a first water pump 750. The first storage tank 710 is used to contain the anode buffer solution. The two ends of the first liquid addition pipeline 720 are respectively connected to the inlet of the first storage tank 710 and the first water pump 750, and the first liquid addition pipeline 720 is equipped with a valve. The two ends of the second liquid addition pipeline 730 are respectively connected to a water source and the inlet of the first water pump 750, and the second liquid addition pipeline 730 is equipped with a valve. The two ends of the third liquid addition pipeline 740 are respectively connected to the outlet of the first water pump 750 and the anode electrolytic cell 100.

[0039] When it is needed to deliver the anode buffer solution to the anode cell, the valve on the first liquid feeding pipe 720 is opened, the valve on the second liquid feeding pipe 730 is closed, and the first water pump 750 is started, at this time the first water pump 750 delivers the anode buffer solution stored in the first storage tank 710 to the anode electrolytic cell 100 through the third liquid feeding pipe 740. When it is needed to deliver water to the anode electrolytic cell 100, the valve on the first liquid feeding pipe 720 is closed, the valve on the second liquid feeding pipe 730 is opened, and the first water pump 750 is started, at this time the first water pump 750 delivers water in the water source to the anode electrolytic cell 100 through the third liquid feeding pipe 740. The water source can be a tap, a water tank, etc.

[0040] Exemplarily, the valve on the first liquid feeding pipe 720 and the valve on the second liquid feeding pipe 730 can be manual valves or solenoid valves.

[0041] Similarly, the specific structure of the second liquid feeding assembly 800 is provided in some embodiments of the present application, and the specific structure of the second liquid feeding assembly 800 is described in detail with reference to Figure 1 The second liquid feeding assembly 800 comprises a second storage tank 810, a fourth liquid feeding pipe 820, a fifth liquid feeding pipe 830, a sixth liquid feeding pipe 840, and a second water pump 850. The second storage tank 810 is used to contain the cathode buffer solution; the fourth liquid feeding pipe 820 is communicated at two ends with the second storage tank 810 and the inlet of the second water pump 850 respectively, and the fourth liquid feeding pipe 820 is provided with a valve; the fifth liquid feeding pipe 830 is communicated at two ends with a water source and the inlet of the second water pump 850 respectively, and the fifth liquid feeding pipe 830 is provided with a valve; and the sixth liquid feeding pipe 840 is communicated at two ends with the outlet of the second water pump 850 and the cathode electrolytic cell 200 respectively.

[0042] When it is needed to deliver the anode buffer solution to the anode cell, the valve on the first liquid feeding pipe 720 is opened, the valve on the second liquid feeding pipe 730 is closed, and the first water pump 750 is started, at this time the first water pump 750 delivers the anode buffer solution stored in the first storage tank 710 to the anode electrolytic cell 100 through the third liquid feeding pipe 740. When it is needed to deliver water to the anode electrolytic cell 100, the valve on the first liquid feeding pipe 720 is closed, the valve on the second liquid feeding pipe 730 is opened, and the first water pump 750 is started, at this time the first water pump 750 delivers water in the water source to the anode electrolytic cell 100 through the third liquid feeding pipe 740. The water source can be a tap, a water tank, etc.

[0043] Exemplarily, the valve on the fourth liquid feeding pipe 820 and the valve on the fifth liquid feeding pipe 830 can be manual valves or solenoid valves.

[0044] As Figure 1As shown, in some embodiments of the present application, the heavy metal contaminated soil ecological restoration device further comprises a first recovery assembly 1100 and a second recovery assembly 1200; the first recovery assembly 1100 is connected to the anode electrolytic cell 100 and is used for recovering the liquid in the anode electrolytic cell 100; the second recovery assembly 1200 is connected to the cathode electrolytic cell 200 and is used for recovering the liquid in the cathode electrolytic cell 200.

[0045] When the heavy metal contaminated soil ecological restoration device works for a preset time and needs to deliver water to the anode electrolytic cell 100 and the cathode electrolytic cell 200, the first recovery assembly 1100 recovers the anode buffer solution in the anode electrolytic cell 100, and the second recovery assembly 1200 recovers the cathode buffer solution in the cathode electrolytic cell 200. Similarly, when the heavy metal contaminated soil ecological restoration device needs to start the soil restoration work, the first recovery assembly 1100 recovers the water in the anode electrolytic cell 100, and the second recovery assembly 1200 recovers the water in the cathode electrolytic cell 200.

[0046] Specifically, Figure 1 The first recovery assembly 1100 shown comprises a first recovery tank 1110, a first recovery pipeline 1120, a second recovery pipeline 1130 and a third water pump 1140; two ends of the first recovery pipeline 1120 are respectively connected to the anode electrolytic cell 100 and the inlet of the third water pump 1140, and the first recovery pipeline 1120 is provided with a valve; two ends of the second recovery pipeline 1130 are respectively connected to the first recovery tank 1110 and the outlet of the third water pump 1140.

[0047] When the first recovery assembly 1100 needs to recover the liquid in the anode electrolytic cell 100, the valve on the first recovery pipeline 1120 is opened, and the third water pump 1140 is started, and the third water pump 1140 delivers the liquid in the anode electrolytic cell 100 to the first recovery tank 1110 through the first recovery pipeline 1120 and the second recovery pipeline 1130.

[0048] Exemplarily, the valve on the first recovery pipeline 1120 can be a manual valve or an electromagnetic valve.

[0049] Specifically, Figure 1 The second recovery assembly 1200 shown comprises a second recovery tank 1210, a third recovery pipeline 1220, a fourth recovery pipeline 1230 and a fourth water pump 1240; two ends of the third recovery pipeline 1220 are respectively connected to the cathode electrolytic cell 200 and the inlet of the fourth water pump 1240, and the third recovery pipeline 1220 is provided with a valve; two ends of the fourth recovery pipeline 1230 are respectively connected to the second recovery tank 1210 and the outlet of the fourth water pump 1240.

[0050] When the second recovery assembly 1200 is needed to recover the liquid in the cathode electrolytic cell 200, the valve on the third recovery pipeline 1220 is opened, and the fourth water pump 1240 is started, which transports the liquid in the cathode electrolytic cell 200 to the first recovery tank 1110 through the third recovery pipeline 1220 and the fourth recovery pipeline 1230.

[0051] Exemplarily, the valve on the third recovery pipeline 1220 can be a manual valve or a solenoid valve.

[0052] As shown in the drawings, Figure 1 Exemplarily, the heavy metal contaminated soil ecological restoration device further comprises a solar panel 1300, a storage battery 1400 and an inverter 1500; the storage battery 1400 is electrically connected to the solar panel 1300, and each of the plurality of conductive slip rings 900 is electrically connected to the storage battery 1400; the input end of the inverter 1500 is connected to the storage battery 1400, and the output end of the inverter 1500 is connected to the first actuating assembly 500 and the second actuating assembly 600; the inverter 1500 is used to convert the direct current output by the storage battery 1400 into alternating current.

[0053] When the power of the storage battery 1400 is sufficient to support the operation of the anode rod 300, the cathode rod 400, the first actuating assembly 500 and the second actuating assembly 600, the power supply is turned off to save the power cost of the heavy metal contaminated soil ecological restoration device. When the alternating current such as commercial power or industrial power is powered off, the storage battery 1400 can still support the operation of the anode rod 300, the cathode rod 400, the first actuating assembly 500 and the second actuating assembly 600.

[0054] The various embodiments in the specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other, and each embodiment mainly describes the difference from other embodiments.

[0055] The above embodiments are only used to illustrate the technical solutions of the present application, and are not limited to the present application; although the technical solutions of the present application are described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the present application.

Claims

1. An ecological remediation device for heavy metal contaminated soil, characterized in that, include: Anode electrolytic cell; A cathode electrolytic cell, wherein the cathode electrolytic cell is arranged parallel to the anode electrolytic cell; Multiple anode rods are arranged in a linear array within the anodic electrolytic cell, and the two ends of each anode rod are rotatably connected to the top and bottom of the anodic electrolytic cell. Multiple cathode rods are arranged in a linear array within the cathode electrolysis cell, and the two ends of each cathode rod are rotatably connected to the top and bottom of the cathode electrolysis cell. A first actuation component is connected to the plurality of anode rods and configured to drive the plurality of anode rods to rotate. A second actuation component is connected to the plurality of cathode rods and configured to drive the plurality of cathode rods to rotate; A first liquid addition assembly, connected to the anodic electrolytic cell, is used to add anodic buffer solution or water to the anodic electrolytic cell; The second liquid addition assembly is connected to the cathode electrolytic cell and is used to add anolyte buffer solution or water to the cathode electrolytic cell; Multiple conductive slip rings are provided, with one end of each anode rod and one end of each cathode rod having a conductive slip ring installed. The conductive slip ring installed on the anode rod is connected to the positive terminal of the power supply, and the conductive slip ring installed on the cathode rod is connected to the negative terminal of the power supply.

2. The heavy metal contaminated soil ecological remediation device according to claim 1, characterized in that, The first actuation component includes a first motor, a first pulley, a plurality of second pulleys, and a plurality of first belts; The plurality of second pulleys are all double-groove pulleys, and the plurality of second pulleys are respectively installed on the upper ends of the plurality of anode rods, and two adjacent second pulleys are connected by the first belt drive; The first pulley is mounted on the shaft of the first motor, and the first pulley is connected to one of the outermost second pulleys via the first belt.

3. The heavy metal contaminated soil ecological remediation device according to claim 1 or 2, characterized in that, The second actuation assembly includes a second motor, a third pulley, a plurality of fourth pulleys, and a plurality of second belts; The plurality of fourth pulleys are all double-groove pulleys, and the plurality of fourth pulleys are respectively installed on the upper end of the plurality of cathode rods, and two adjacent fourth pulleys are connected by the second belt drive. The third pulley is mounted on the shaft of the second motor, and the third pulley is connected to one of the outermost fourth pulleys via the second belt.

4. The heavy metal contaminated soil ecological remediation device according to claim 3, characterized in that, Also includes: The rotating assembly includes multiple rotating assemblies installed on the top and bottom surfaces of the inner wall of the anodic electrolytic cell, with both ends of each anode rod fixedly connected to the rotating assembly; and multiple rotating assemblies installed on the top and bottom surfaces of the inner wall of the cathodic electrolytic cell, with both ends of each cathode rod fixedly connected to the rotating assembly. Each of the rotating components includes a bearing housing, a bearing, and a load-bearing shaft; The bearing housing is used to be fixedly connected to the top and bottom surfaces of the inner wall of the anodic electrolytic cell, and the top and bottom surfaces of the inner wall of the cathode electrolytic cell; The bearing is installed in the bearing housing; One end of the bearing shaft is provided with a bearing blind hole that extends axially and allows the anode rod or cathode rod to extend into it, and the other end of the bearing shaft is connected to the bearing; and the bearing shaft located on the top surface of the inner wall of the anode electrolytic cell passes through the corresponding anode electrolytic cell and is connected to the second pulley, and the bearing shaft located on the top surface of the inner wall of the cathode electrolytic cell passes through the corresponding cathode electrolytic cell and is connected to the fourth pulley.

5. The ecological remediation device for heavy metal contaminated soil according to claim 1, characterized in that, The first liquid addition assembly includes a first storage tank, a first liquid addition pipeline, a second liquid addition pipeline, a third liquid addition pipeline, and a first water pump; The first storage tank is used to contain the anolyte buffer solution; The first liquid filling pipeline is connected to the inlet of the first storage tank and the inlet of the first water pump at both ends, and the first liquid filling pipeline is equipped with a valve; The two ends of the second liquid filling pipeline are respectively connected to the water source and the inlet of the first water pump, and the second liquid filling pipeline is equipped with a valve; The two ends of the third liquid addition pipeline are respectively connected to the outlet of the first water pump and the anode electrolysis cell.

6. The heavy metal contaminated soil ecological remediation device according to claim 1 or 5, characterized in that, The second liquid addition assembly includes a second storage tank, a fourth liquid addition pipeline, a fifth liquid addition pipeline, a sixth liquid addition pipeline, and a second water pump; The second storage tank is used to contain the cathode buffer solution; The two ends of the fourth liquid addition pipeline are respectively connected to the inlet of the second storage tank and the inlet of the second water pump, and the fourth liquid addition pipeline is equipped with a valve; The fifth liquid addition pipeline is connected to a water source and the inlet of the second water pump at both ends, and the fifth liquid addition pipeline is equipped with a valve. The two ends of the sixth liquid addition pipeline are respectively connected to the outlet of the second water pump and the cathode electrolysis cell.

7. The heavy metal contaminated soil ecological remediation device according to claim 1, characterized in that, Also includes: A first recovery component, connected to the anodic electrolytic cell, is used to recover the liquid in the anodic electrolytic cell; A second recovery component, connected to the cathode electrolytic cell, is used to recover the liquid within the cathode electrolytic cell.

8. The heavy metal contaminated soil ecological remediation device according to claim 7, characterized in that, The first recycling assembly includes a first recycling tank, a first recycling pipeline, a second recycling pipeline, and a third water pump; The first recovery pipeline is connected at both ends to the inlet of the anode electrolytic cell and the third water pump, respectively, and the first recovery pipeline is equipped with valves; The two ends of the second recycling pipeline are respectively connected to the outlet of the first recycling tank and the outlet of the third water pump.

9. The heavy metal contaminated soil ecological remediation device according to claim 7 or 8, characterized in that, The second recycling assembly includes a second recycling tank, a third recycling pipeline, a fourth recycling pipeline, and a fourth water pump; The two ends of the third recovery pipeline are respectively connected to the inlet of the cathode electrolytic cell and the inlet of the fourth water pump, and the third recovery pipeline is equipped with valves; The two ends of the fourth recovery pipeline are respectively connected to the outlet of the second recovery tank and the outlet of the fourth water pump.

10. The heavy metal contaminated soil ecological remediation device according to claim 1, characterized in that, Also includes: Solar panels; A storage battery, which is electrically connected to the solar panel; Furthermore, all of the plurality of conductive slip rings are electrically connected to the battery; An inverter, the input of which is connected to the battery, and the output of which is connected to the first actuation component and the second actuation component.

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