Heavy metal polluted underground water remediation device

Abstract

The utility model discloses a heavy metal polluted groundwater remediation device, which comprises a box body, a stirring rod hermetically and rotatably mounted on the inner wall of the bottom of the box body, and a plurality of stirring blades fixedly connected to the outer side of the stirring rod, and a motor with an output shaft fixedly connected with the bottom end of the stirring rod is fixedly mounted at the bottom of the box body. By arranging a series of structures, underground water can be quantitatively supplied, the total manganese content can be conveniently measured, an oxidizing agent can be automatically and accurately supplied according to different total manganese contents in a quantity control and matching manner, the phenomenon that the repairing effect is not ideal due to different total manganese contents is avoided, the repairing effect is improved, and the repairing cost is reduced. And water can be conveniently and automatically discharged after mixing and repairing, supply treatment and repairing work can be conducted again, the effects of sequentially, automatically and quantitatively adding underground water, adding the oxidizing agent in a controlled amount according to the proportion, stirring, mixing and discharging are achieved, automatic circulating adding and repairing work can be formed, and the use automation degree and convenience are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of repair equipment, in particular to a heavy metal polluted groundwater repair device. Background Art

[0002] Groundwater is an important component of water resources. Due to its stable water volume and good water quality, it is one of the important water sources for agricultural irrigation, industry, mining and cities. However, under certain conditions, changes in groundwater can also cause adverse natural phenomena such as swamping, salinization, landslides, and ground subsidence. When repairing groundwater containing manganese heavy metals, some specific materials need to be added, such as potassium permanganate, chlorine dioxide and other oxidants, to carry out mixed reactions with the manganese heavy metals in the groundwater in order to carry out groundwater repair work. However, it is rarely possible to quantify the amount of materials added, which makes it very inconvenient to repair contaminated groundwater.

[0003] Announcement No. CN216303497U discloses a device for repairing groundwater contaminated by manganese and heavy metals, including a base, a box body fixedly connected to the surface of the base, a fixed plate fixedly connected to the surface of the box body, and a telescopic device fixedly connected to the surface of the fixed plate; its beneficial effect is that by setting a threaded column, when people need to add materials to the inside of the box body, people only need to rotate the turntable, which can drive the first rotating shaft to rotate, and then drive the first rotating shaft to rotate, and at the same time drive the threaded column to rotate. Under the interaction between the threaded column and the threaded pipe, the feeding box can be driven to move, and the connecting pipe can be driven downward, and the material inside the feeding box can be added to the mixing box. Under the action of the threaded column, people can add materials to the inside of the box body more quickly, thereby improving people's work efficiency.

[0004] The above-mentioned technology discloses a device for remediating groundwater contaminated with manganese and heavy metals. After each addition of groundwater, personnel manually operate the feeding box and observe the scale line on the outside of the box to quantitatively add oxidant. However, the device has the following shortcomings during use:

[0005] 1. The method of manually adding oxidants each time cannot automatically and accurately control the amount of oxidants added, making it difficult to achieve automated addition and repair work, and the degree of automation is not ideal; 2. It is impossible to quantitatively measure the total manganese content of groundwater and add oxidants in a quantitative ratio according to the total manganese content. Since the total manganese content of different groundwaters is also different, the method of only quantitatively adding oxidants is prone to unsatisfactory repair effects due to different total manganese contents; improvement is needed. In view of this, the present application proposes a heavy metal contaminated groundwater repair device to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of the utility model is to provide a heavy metal contaminated groundwater repair device to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a heavy metal contaminated groundwater remediation device, comprising a housing and a stirring rod sealed and rotatably mounted on the inner wall of the bottom of the housing, and a plurality of stirring blades fixedly connected to the outside of the stirring rod; a motor with an output shaft fixedly connected to the bottom end of the stirring rod is fixedly mounted on the bottom of the housing; a PLC controller is fixedly mounted on the right side of the housing; a warning light is fixedly mounted on the top of the PLC controller and electrically connected to the PLC controller; a groundwater flow measurement and quantitative delivery component electrically connected to the PLC controller is fixedly mounted on the top of the housing; the groundwater flow measurement and quantitative delivery component is used to be controlled by the PLC controller to quantitatively extract groundwater each time and supply it to the housing;

[0008] The movable sleeve in the box body is provided with a filter assembly located above the stirring rod, and the filter assembly is fixed to the left side of the box body with a thread, and the filter assembly is used to filter the groundwater supplied into the box body;

[0009] An oxidant storage tank is fixedly installed on the right side of the top of the box body, and an oxidant flow measurement and quantitative supply component electrically connected to the PLC controller is fixed between the right side of the bottom of the oxidant storage tank and the top of the right side of the box body. A water level sensor and a total manganese water quality monitor located above it are fixedly installed on the bottom right side of the box body. The detection end of the total manganese water quality monitor and the detection end of the water level sensor are extended into the box body. A drainage solenoid valve is fixed on the right side of the bottom of the box body. The drainage solenoid valve, the total manganese water quality monitor and the water level sensor are all electrically connected to the PLC controller. The total manganese water quality monitor is used to detect the total manganese content of the supplied groundwater and transmit the total manganese content value to the PLC controller. The PLC controller is used to pre-set the oxidant dosage of different total manganese content ratios in a fixed amount of groundwater. The flow measurement and quantitative supply component is used to be controlled by the PLC controller to accurately control the amount and proportion of the oxidant according to different total manganese contents to react with the groundwater. The PLC controller is pre-set to start stirring and mixing after adding the oxidant, and after stirring and mixing for thirty seconds, the drainage solenoid valve and the prompt light are controlled to turn on to discharge the groundwater and remind personnel that they are in the drainage state. When the water level sensor detects that the groundwater is discharged to the lowest water level, it transmits a shutdown signal to the PLC controller. The PLC controller controls the drainage solenoid valve and the prompt light to turn off, and controls the water pump to start again to enter the next cycle of treatment and repair work. The set drainage solenoid valve is used to connect with the external filter to filter the impurities in the groundwater after the reaction, and then connect the drain outlet of the external filter to the groundwater for discharge.

[0010] Preferably, the groundwater flow measurement and quantitative delivery component includes a water pump fixedly installed on the top of the box body, the water outlet of the water pump extends into the box body, the water inlet of the water pump is connected to and fixed with a first liquid flow sensor, the left end of the first liquid flow sensor is connected to and fixed with a water suction hose, and the first liquid flow sensor and the water pump are both electrically connected to the PLC controller.

[0011] Preferably, the filter assembly includes an activated carbon filter plate movably sleeved in the box body, the top of the activated carbon filter plate is set as a concave structure, the bottom inner wall of the concave structure is set as a slag collecting groove, a rectangular through-hole is provided on the left side of the box body, a rectangular sealing rubber sleeve is provided in the adhesive sleeve inside the rectangular through-hole, a T-shaped plugging plate is movably sleeved in the rectangular sealing rubber sleeve, the right side of the T-shaped plugging plate is fixedly connected to the left side of the activated carbon filter plate, a support block that is movably in contact with the right side of the bottom of the activated carbon filter plate is fixedly connected to the right inner wall of the box body, two threaded grooves are provided on the left side of the box body, and the threaded sleeve in the threaded groove is provided with a knob-type bolt, the T-shaped plugging plate threaded sleeve is sleeved on the two knob-type bolts, and the activated carbon filter plate is located below the water outlet of the water pump.

[0012] Preferably, the oxidant flow measurement and quantitative supply component includes a first solenoid valve connected and fixed on the right side of the bottom of the oxidant storage tank, the bottom end of the first solenoid valve is connected and fixed with a second liquid flow sensor, an inclined conduit is connected and fixed between the bottom end of the second liquid flow sensor and the right top of the box body, and the first solenoid valve and the second liquid flow sensor are both electrically connected to the PLC controller.

[0013] Preferably, the four corners of the bottom of the box are fixedly connected with supporting legs, the bottom of the box is fixedly connected with a U-shaped support, and the motor is fixedly connected to the bottom inner wall of the U-shaped support.

[0014] Preferably, a battery is fixedly installed on the left side of the bottom of the box, and the motor, PLC controller, prompt light, water pump, first solenoid valve, drain solenoid valve and total manganese water quality monitor are all electrically connected to the battery.

[0015] Preferably, the distances between the front and rear inner walls of the rectangular sealing rubber sleeve and the front and rear sides of the activated carbon filter plate are the same.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. Through the cooperation of the set box, PLC controller, prompt light, filter component, groundwater flow measurement and quantitative delivery component, total manganese water quality monitor, oxidant flow measurement and quantitative supply component, motor, stirring rod, drainage solenoid valve and water level sensor, it is possible to quantitatively supply groundwater and measure the total manganese content, and automatically and accurately control the proportion of oxidant supply according to different total manganese contents, avoiding the phenomenon of unsatisfactory remediation effect due to different total manganese contents and improving the remediation effect; and it can automatically discharge water after mixed remediation and resupply treatment and remediation work;

[0018] 2. By automatically adding groundwater in a quantitative manner, adding oxidants in a controlled ratio, stirring, mixing and discharging, an automated cycle of adding and repairing treatment can be formed, which improves the degree of automation in use. There is no need for personnel to be on duty to restart the work, which greatly improves the overall degree of automation and facilitates unmanned long-term treatment work. Personnel only need to regularly replenish the oxidant in the oxidant storage tank, which provides great convenience for use.

[0019] The utility model is provided with a series of structures, which is convenient for quantitatively supplying groundwater and measuring the total manganese content, and can automatically and accurately control the proportion of supplying oxidant according to different total manganese contents, avoiding the phenomenon of unsatisfactory repair effect due to different total manganese contents, improving the repair effect, and facilitating the automatic discharge of water after mixed repair and the supply of treatment and repair work again, realizing the effects of automatic quantitative addition of groundwater, addition of oxidant according to proportion, stirring and discharging in sequence, and forming an automated cycle of adding repair treatment work, thereby improving the degree of automation and convenience in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of a heavy metal contaminated groundwater remediation device proposed by the utility model;

[0021] Figure 2 for Figure 1 Schematic diagram of the right view structure;

[0022] Figure 3 This is a schematic cross-sectional view of a heavy metal contaminated groundwater remediation device proposed in the present invention.

[0023] In the figure: 1. Box body; 2. Motor; 3. Stirring rod; 4. Activated carbon filter plate; 5. T-shaped plug; 6. PLC controller; 7. Warning light; 8. Water pump; 9. First liquid flow sensor; 10. Suction hose; 11. Total manganese water quality monitor; 12. Water level sensor; 13. Drain solenoid valve; 14. Oxidant storage tank; 15. First solenoid valve; 16. Second liquid flow sensor; 17. Inclined conduit. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figures 1 to 3 As shown, a heavy metal contaminated groundwater remediation device proposed in this embodiment includes a box body 1 and a stirring rod 3 sealed and rotatably mounted on the bottom inner wall of the box body 1 and a plurality of stirring blades fixedly connected to the outside of the stirring rod 3, wherein a circular through-hole is opened on the bottom inner wall of the box body 1, and two sealed bearings are fixedly sleeved in the circular through-hole, and the inner ring of the sealed bearing is fixedly sleeved on the outer side of the stirring rod 3, so as to achieve the effect of sealing and rotating installation of the stirring rod 3, and a motor 2 is fixedly installed at the bottom of the box body 1 with an output shaft fixedly connected to the bottom end of the stirring rod 3, wherein the four corners of the bottom of the box body 1 are fixedly connected with support legs, and the bottom of the box body 1 is fixedly connected with A U-shaped support, a motor 2 is fixedly connected to the bottom inner wall of the U-shaped support, a PLC controller 6 is fixedly installed on the right side of the box body 1, a prompt light 7 is fixed on the top of the PLC controller 6 and electrically connected, a groundwater flow measurement and quantitative delivery component electrically connected to the PLC controller 6 is fixedly installed on the top of the box body 1, and the groundwater flow measurement and quantitative delivery component is used to be controlled by the PLC controller 6 to perform each quantitative extraction of groundwater and supply it to the box body 1; a filter component is movably provided in the box body 1 above the stirring rod 3, and the filter component is fixed to the left side of the box body 1 with a thread, and the filter component is used to filter the groundwater supplied into the box body 1;

[0026] An oxidant storage tank 14 is fixedly installed on the top right side of the box body 1, wherein a feeding pipe is fixedly connected to the top right side of the oxidant storage tank 14, and an oxidant flow measurement and quantitative supply component electrically connected to the PLC controller 6 is fixedly connected between the bottom right side of the oxidant storage tank 14 and the top right side of the box body 1. A water level sensor 12 and a total manganese water quality monitor 11 located above it are fixedly installed on the bottom right side of the box body 1. The detection end of the total manganese water quality monitor 11 and the detection end of the water level sensor 12 both extend into the box body 1. A drain solenoid valve 13 is fixedly connected to the bottom right side of the box body 1. The drain solenoid valve 13, the total manganese water quality monitor 11 and the water level sensor 12 are all electrically connected to the PLC controller 6. The total manganese water quality monitor 11 is used to detect the total manganese content of the supplied groundwater and transmit it to the PLC controller 6 for the total manganese content value. The PLC controller 6 is used to pre-set a fixed amount of groundwater. The amount of oxidant with different total manganese content ratios, the oxidant flow measurement and quantitative supply component is used to be controlled by the PLC controller 6 to accurately control the amount of oxidant according to different total manganese contents to react with the groundwater. The PLC controller 6 is pre-set to start stirring and mixing after adding the oxidant and after stirring and mixing for thirty seconds, the drainage solenoid valve 13 and the prompt light 7 are controlled to turn on to discharge the groundwater and prompt personnel that they are in the drainage state. When the water level sensor 12 detects that the groundwater is discharged to the lowest water level, it transmits a closing signal to the PLC controller 6. The PLC controller 6 controls the drainage solenoid valve 13 and the prompt light 7 to close, and controls the water pump 8 to start again to enter the next cycle treatment and repair work. The set drainage solenoid valve 13 is used to connect with the external filter to filter the impurities in the groundwater after the reaction, and then connect the drain outlet of the external filter to the groundwater for discharge.

[0027] Specifically, the groundwater flow measurement and quantitative delivery component includes a water pump 8 fixedly installed on the top of the box body 1, the water outlet of the water pump 8 extends into the box body 1, the water inlet of the water pump 8 is connected and fixed with a first liquid flow sensor 9, the left end of the first liquid flow sensor 9 is connected and fixed with a water suction hose 10, and the first liquid flow sensor 9 and the water pump 8 are both electrically connected to the PLC controller 6; the set water pump 8, the first liquid flow sensor 9 and the water suction hose 10 cooperate, and the PLC controller 6 is used to pre-set the water flow value for controlling the water pump 8 to be turned off, and the water pump 8 is used to extract and supply groundwater into the box body 1 through the first liquid flow sensor 9 and the water suction hose 10 in turn, and the first liquid flow sensor 9 is used to detect the water flow and transmit the water flow value to the PLC controller 6. When the preset value is reached, the PLC controller 6 controls the water pump 8 to be turned off for quantitative supply of groundwater for treatment. By quantitatively supplying the groundwater for treatment each time, it is convenient to accurately proportion the oxidant, and prevent the phenomenon that it is difficult to judge the oxidant proportioning amount due to the different amount of groundwater each time.

[0028] Furthermore, the filter assembly includes an activated carbon filter plate 4 movably sleeved in the box body 1, the top of the activated carbon filter plate 4 is set as a concave structure, and the bottom inner wall of the concave structure is set as a slag collecting groove, a rectangular perforation is provided on the left side of the box body 1, and a rectangular sealing rubber sleeve is provided in the adhesive sleeve inside the rectangular perforation, and a T-shaped plugging plate 5 is movably sleeved in the rectangular sealing rubber sleeve, and the right side of the T-shaped plugging plate 5 is fixedly connected to the left side of the activated carbon filter plate 4, and the distance between the front and rear inner walls of the rectangular sealing rubber sleeve and the front and rear sides of the activated carbon filter plate 4 is the same. A support block that is movably in contact with the right side of the bottom of the activated carbon filter plate 4 is fixedly connected to the right inner wall of the box body 1, and two threaded grooves are provided on the left side of the box body 1 , and a knob-type bolt is provided in the threaded sleeve of the threaded groove, and the T-shaped plugging plate 5 is threadedly sleeved on the two knob-type bolts, wherein two threaded holes are provided on the left side of the T-shaped plugging plate 5, which are respectively threadedly connected to the corresponding knob-type bolts, and the activated carbon filter plate 4 is located below the water outlet of the water pump 8; the activated carbon filter plate 4, T-shaped plugging plate 5 and knob-type bolts are arranged in cooperation, and the activated carbon filter plate 4 is used to filter impurities in the supplied groundwater, and the slag collecting groove is used to facilitate the collection of impurities in the slag collecting groove under the impact of water during filtration. The knob-type bolt is provided for personnel to release the lock of the T-shaped plugging plate 5 later, so as to facilitate the activation of The carbon filter plate 4 is moved to the left for cleaning.

[0029] Furthermore, the oxidant flow measurement and quantitative supply component includes a first solenoid valve 15 connected and fixed to the right side of the bottom of the oxidant storage tank 14, the bottom end of the first solenoid valve 15 is connected and fixed with a second liquid flow sensor 16, and an inclined conduit 17 is connected and fixed between the bottom end of the second liquid flow sensor 16 and the right top of the box body 1. The first solenoid valve 15 and the second liquid flow sensor 16 are both electrically connected to the PLC controller 6. A battery is fixedly installed on the left side of the bottom of the box body 1, and the motor 2, PLC controller 6, prompt light 7, water pump 8, first solenoid valve 15, drain solenoid valve 13 and total manganese water quality monitor 11 are all electrically connected to the battery; the first solenoid valve 15, the second liquid flow sensor 16 and the inclined conduit 17 are coordinated, and the PLC controller 6 is pre-set to control the first solenoid valve 15 according to the different total manganese contents of the quantitative groundwater. The closed liquid flow value, for example, if the total manganese content is 1 and the required oxidant ratio is 0.7, then the liquid flow value for controlling the closing of the first solenoid valve 15 when the total manganese content is 1 is set to 0.7; if the total manganese content is 2 and the required oxidant ratio is 1.4, then the liquid flow value for controlling the closing of the first solenoid valve 15 when the total manganese content is 1 is set to 1.4, and so on. When the PLC controller 6 receives the total manganese content value, it controls the first solenoid valve 15 to open. At this time, the oxidant is sequentially supplied into the box body 1 through the first solenoid valve 15, the second liquid flow sensor 16 and the inclined conduit 17. The second liquid flow sensor 16 detects the supply amount and transmits the supply amount to the PLC controller 6. When the corresponding supply amount is reached, the PLC controller 6 controls the first solenoid valve 15 to close automatically, thereby achieving the effect of automatically and accurately controlling the supply of oxidant according to different total manganese contents.

[0030] The above-mentioned ratio of total manganese content to oxidant only provides a calculation method and does not specify a specific ratio. The specific ratio is determined by pre-measuring the amount of oxidant required for the mixed reaction at different total manganese contents and setting it accordingly based on the measured oxidant demand.

[0031] Among them, by those skilled in the art, all the electrical components in this case are connected to the PLC controller 6 through conventional control transmission wires to meet the control requirements. The conventional control wires are used for direct wired connection, which is a well-known technology in this field. The following mainly introduces the working principle and process, and no longer explains the electrical control. In addition, the PLC controller 6, water pump 8, first liquid flow sensor 9, first solenoid valve 15, second liquid flow sensor 16, drain solenoid valve 13, water level sensor 12 and total manganese water quality monitor 11 in the present utility model are well known to those skilled in the art and belong to conventional means or common knowledge. Those skilled in the art can make any selection according to their needs or convenience. The PLC controller 6 receives the water flow transmitted by the first liquid flow sensor 9 and controls the water pump 8 to close when it reaches a preset value, receives the total manganese content transmitted by the total manganese water quality monitor 11 and controls the first solenoid valve 15 to close according to the preset setting, controls the motor 2 to start the number of seconds by the preset opening and closing time, and controls the drain solenoid valve 13 to open when the time is reached and controls the drain solenoid valve 13 to close when the liquid level value transmitted by the water level sensor 12 reaches the minimum. This is a basic programming parameter CNC control method well known to those skilled in the art. Programmers can program and set the corresponding control program according to the above-mentioned working sequence requirements to implement it. They all belong to conventional programming CNC means or common knowledge, and will not be repeated here.

[0032] The method of use of this embodiment is as follows: place one end of the water suction hose 10 in the groundwater to be repaired, connect the drainage solenoid valve 13 to the external filter to filter impurities in the groundwater after the subsequent mixing reaction, and then connect the drainage port of the external filter to the groundwater for final drainage after use. When in use, use the PLC controller 6 to pre-set the water flow value for controlling the water pump 8 to be closed, and use the PLC controller 6 to pre-set the liquid flow value for controlling the closing of the first solenoid valve 15 according to the different total manganese contents of the quantitative groundwater. For example, if the total manganese content is 1 and the oxidant ratio is 0.7, then it is set to 1 when the total manganese content is 1. The liquid flow rate value for controlling the closing of the first solenoid valve 15 is 0.7. For example, if the total manganese content is 2 and the required oxidant ratio is 1.4, then the liquid flow rate value for controlling the closing of the first solenoid valve 15 is set to 1.4 when the total manganese content is 1, and so on. In addition, the PLC controller 6 is pre-set to start stirring and mixing after adding the oxidant, and after stirring and mixing for thirty seconds, the drainage solenoid valve 13 and the warning light 7 are controlled to turn on to drain the groundwater and remind personnel that the drainage state is in progress. The PLC controller 6 is pre-set to control the drainage solenoid valve 13 and the warning light 7 to close when the water level value drops to the minimum value, and to control the water pump 8 to turn on again.

[0033] Turn on the water pump 8, which extracts groundwater through the first liquid flow sensor 9 and the water suction hose 10 in turn and supplies it into the box 1. The first liquid flow sensor 9 is used to detect the water flow and transmit the water flow value to the PLC controller 6. When the preset value is reached, the PLC controller 6 controls the water pump 8 to shut down and quantitatively supply the groundwater for treatment. By quantitatively supplying the groundwater for treatment each time, it is convenient to accurately proportion the oxidant and prevent the phenomenon that it is difficult to judge the proportion of the oxidant due to the different amount of groundwater each time; use the activated carbon filter plate 4 to filter the impurities in the supplied groundwater, and use the slag collecting groove to facilitate the collection of impurities in the slag collecting groove under the impact of water during filtration. The total manganese water quality monitor 11 detects the supplied The total manganese content of the groundwater is transmitted to the total manganese content value of the PLC controller 6. When the PLC controller 6 receives the total manganese content value, it controls the first solenoid valve 15 to open. At this time, the oxidant is sequentially supplied into the box body 1 through the first solenoid valve 15, the second liquid flow sensor 16 and the inclined conduit 17. The second liquid flow sensor 16 detects the supply amount and transmits the supply amount to the PLC controller 6. When the corresponding supply amount is reached, the PLC controller 6 controls the first solenoid valve 15 to automatically close, so that the groundwater can be quantitatively supplied and the total manganese content can be measured. The oxidant is automatically and accurately controlled and proportioned according to different total manganese contents to avoid the phenomenon that the repair effect is not ideal due to different total manganese contents, thereby improving the repair effect.

[0034] After the oxidant is added, the PLC controller 6 controls the motor 2 to start for thirty seconds according to the preset control program steps. The motor 2 drives the stirring rod 3 and the stirring blade to stir and mix the oxidant and groundwater to repair the reaction, and controls the drainage solenoid valve 13 and the prompt light 7 to open after thirty seconds to drain the groundwater and remind personnel that they are in the drainage state. As the water is discharged, the water level sensor 12 detects that the groundwater is discharged to the lowest water level and transmits a closing signal to the PLC controller 6. The PLC controller 6 controls the drainage solenoid valve 13 and the prompt light 7 to close, and controls the water pump 8 to start again to enter the next cycle treatment and repair work, thereby realizing the effects of automatically adding groundwater in a quantitative manner, adding oxidant according to the ratio, stirring, mixing and discharging in sequence, which can form an automated cycle addition and repair treatment work, and improve the degree of automation and convenience in use.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A heavy metal contaminated groundwater remediation device, comprising a housing (1) and a stirring rod (3) sealed and rotatably mounted on the inner wall of the bottom of the housing (1), and a plurality of stirring blades fixedly connected to the outside of the stirring rod (3), wherein a motor (2) having an output shaft fixedly connected to the bottom end of the stirring rod (3) is fixedly mounted on the bottom of the housing (1), characterized in that: A PLC controller (6) is fixedly installed on the right side of the box (1), a warning light (7) is fixed and electrically connected to the top of the PLC controller (6), and a groundwater flow measurement and quantitative delivery component electrically connected to the PLC controller (6) is fixedly installed on the top of the box (1); A filter assembly is movably sleeved in the box body (1) and is located above the stirring rod (3). The filter assembly is fixed to the left side of the box body (1) by a thread. An oxidant storage tank (14) is fixedly installed on the right side of the top of the box (1); an oxidant flow measurement and quantitative supply component electrically connected to a PLC controller (6) is fixedly installed between the right side of the bottom of the oxidant storage tank (14) and the top of the right side of the box (1); a water level sensor (12) and a total manganese water quality monitor (11) located above the water level sensor (12) are fixedly installed on the right bottom of the box (1); the detection end of the total manganese water quality monitor (11) and the detection end of the water level sensor (12) both extend into the box (1); a drainage solenoid valve (13) is fixedly installed on the right side of the bottom of the box (1); the drainage solenoid valve (13), the total manganese water quality monitor (11) and the water level sensor (12) are all electrically connected to the PLC controller (6).

2. A heavy metal contaminated groundwater remediation device according to claim 1, characterized in that: The groundwater flow measurement and quantitative delivery assembly comprises a water pump (8) fixedly mounted on the top of a box (1); the water outlet of the water pump (8) extends into the box (1); the water inlet of the water pump (8) is connected to and fixed with a first liquid flow sensor (9); the left end of the first liquid flow sensor (9) is connected to and fixed with a water suction hose (10); and the first liquid flow sensor (9) and the water pump (8) are both electrically connected to a PLC controller (6).

3. A heavy metal contaminated groundwater remediation device according to claim 2, characterized in that: The filter assembly comprises an activated carbon filter plate (4) movably sleeved in the box body (1), the top of the activated carbon filter plate (4) being arranged as an inward concave structure, the bottom inner wall of the inward concave structure being arranged as a slag collecting groove, a rectangular perforation being provided on the left side of the box body (1), a rectangular sealing rubber sleeve being provided in the adhesive sleeve in the rectangular perforation, a T-shaped plugging plate (5) being movably sleeved in the rectangular sealing rubber sleeve, the right side of the T-shaped plugging plate (5) being fixedly connected to the left side of the activated carbon filter plate (4), a support block being fixedly connected to the right inner wall of the box body (1) and being in movably contact with the right side of the bottom of the activated carbon filter plate (4), two threaded grooves being provided on the left side of the box body (1), and knob-type bolts being provided in the threaded sleeves in the threaded grooves, the T-shaped plugging plate (5) being threadedly sleeved on the two knob-type bolts, and the activated carbon filter plate (4) being located below the water outlet of the water pump (8).

4. The heavy metal contaminated groundwater remediation device according to claim 1, characterized in that: The oxidant flow measurement and quantitative supply assembly comprises a first solenoid valve (15) connected and fixed to the right side of the bottom of the oxidant storage tank (14); a second liquid flow sensor (16) is connected and fixed to the bottom end of the first solenoid valve (15); an inclined conduit (17) is connected and fixed between the bottom end of the second liquid flow sensor (16) and the right top of the tank body (1); and both the first solenoid valve (15) and the second liquid flow sensor (16) are electrically connected to a PLC controller (6).

5. The heavy metal contaminated groundwater remediation device according to claim 1, characterized in that: The four corners of the bottom of the box body (1) are fixedly connected with supporting legs, the bottom of the box body (1) is fixedly connected with a U-shaped support, and the motor (2) is fixedly connected to the bottom inner wall of the U-shaped support.

6. The heavy metal contaminated groundwater remediation device according to claim 4, characterized in that: A storage battery is fixedly installed on the left side of the bottom of the box (1), and the motor (2), the PLC controller (6), the prompt light (7), the water pump (8), the first solenoid valve (15), the drainage solenoid valve (13) and the total manganese water quality monitor (11) are all electrically connected to the storage battery.

7. The heavy metal contaminated groundwater remediation device according to claim 3, characterized in that: The distances between the front and rear inner walls of the rectangular sealing rubber sleeve and the front and rear sides of the activated carbon filter plate (4) are the same.

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