Ultrasonic enhanced soil remediation integrated device

Abstract

The integrated device comprises a reaction tank body and a controller, a machine cover is fixedly connected to the top surface of the reaction tank body, a stirring assembly is arranged in the center of the machine cover, three mounting openings are evenly and vertically formed in the machine cover, an ultrasonic transducer is fixedly connected to the position, corresponding to each mounting opening, of the top surface of the machine cover, and the ultrasonic transducers are connected with the controller. The bottom of the ultrasonic transducer is fixedly connected with an ultrasonic probe, the ultrasonic probe penetrates through the mounting opening and is positioned in the reaction tank body, the machine cover is vertically sleeved with two heating rods, and the lower parts of the heating rods are positioned in the reaction tank body; the ultrasonic transducer generates ultrasonic vibration through the ultrasonic probe, the stirring assembly provides mechanical stirring and mixing, the ultrasonic vibration and the mechanical stirring are integrated in the reaction tank body, and the ultrasonic and the stirring have a synergistic effect, so that macroscopic physical uniform mixing of a medicament and soil can be improved, microcosmic interface contact of the medicament and pollutants can also be improved, and the pollutant removal rate is increased. Meanwhile, the agent utilization rate and the repairing efficiency are improved, and the cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of soil remediation equipment, and in particular to an integrated device for ultrasonically enhanced soil remediation. Background Art

[0002] Soil pollution not only affects agricultural production and damages the ecological environment, but may also pose a threat to human health through the food chain. Common soil pollutants include heavy metals, organic pollutants, etc. These pollutants are difficult to degrade in the soil, and long-term accumulation will lead to serious ecological and health problems; traditional soil remediation technologies mainly include physical remediation, chemical remediation and biological remediation. Physical remediation such as thermal desorption can directly remove pollutants, but it has high energy consumption, poor economic efficiency, and may damage soil structure and ecological balance. Chemical remediation such as chemical oxidation and chemical reduction can decompose organic pollutants, but may cause secondary pollution, the remediation effect is easy to rebound, and the effect on inorganic pollutants such as heavy metals is limited. Bioremediation uses microorganisms to degrade pollutants and is an environmentally friendly method. In logistics remediation, the remediation agent is mixed with soil in a mixed manner. For example, the Chinese utility model patent with the authorization announcement number CN213556488U discloses a soil remediation mixing device, which includes a mixing tank, a central shaft is rotatably installed in the middle of the mixing tank, a forward drive motor for driving the central shaft is installed on the upper surface of the mixing tank, at least three shaft sleeves are rotatably installed on the central shaft, a net bucket is fixedly connected to the outer circumference of the sleeve, and reverse stirring blades are installed on both sides of the lower surface of the net bucket. A reverse drive device for driving the net bucket to rotate is installed on both sides of the mixing tank, and forward stirring blades are installed on both sides of the central shaft located inside the net bucket. The utility model is provided with forward stirring blades and a reverse rotating net bucket, but this mixed soil remediation device has the following defects:

[0003] This mixing device only uses mechanical stirring for mixing, the mixing effect of the agent and the soil is poor, the contact efficiency of the agent and the pollutant is low, the mixing effect is poor, and the utilization rate of the agent is also low.

[0004] To this end, we propose an integrated device for ultrasonic enhanced soil remediation to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide an integrated device for ultrasonic enhanced soil remediation to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an integrated device for ultrasonic enhanced soil remediation, comprising a reaction tank body and a controller, the top surface of the reaction tank body is fixedly connected to a machine cover, a stirring assembly is arranged at the center of the machine cover, three mounting openings are evenly and vertically opened on the machine cover, an ultrasonic transducer is fixedly connected to the top surface of the machine cover corresponding to each mounting opening, an ultrasonic probe is fixedly connected to the bottom of the ultrasonic transducer, the ultrasonic probe passes through the mounting opening and is located inside the reaction tank body, two heating rods are vertically sleeved on the machine cover, and the lower part of the heating rods is located inside the reaction tank body.

[0007] Preferably, a protective outer cover is provided outside the reaction tank body, and a heat-insulating material is fixedly connected between the inner wall of the protective outer cover and the outer wall of the reaction tank body.

[0008] Preferably, a plurality of temperature sensors are evenly fixed to the inner wall of the reaction tank body, and a medicine injection port is fixed to the cover, and the medicine injection port is connected to the interior of the reaction tank body.

[0009] Preferably, a discharge port is opened on one side of the bottom of the reaction tank body, and a feed port is opened on the other side of the bottom of the reaction tank body, the discharge port is fixedly connected to and connected to one end of a discharge pipe, the other end of the discharge pipe is located outside the protective cover, the discharge pipe is fixedly connected to a first valve, the discharge pipe passes through the protective cover and the thermal insulation material, the feed port is fixedly connected to and connected to one end of a feed pipe, the other end of the feed pipe is located outside the protective cover and fixedly connected to a pump, the feed pipe is fixedly connected to a second valve, and the feed pipe passes through the protective cover and the thermal insulation material.

[0010] Preferably, the stirring assembly includes a fixture fixedly connected to the center of the top surface of the machine cover, the fixture is rotatably connected to the top end of a stirring rod, the stirring rod is located at the center position inside the reaction tank body, a plurality of stirring blades are evenly fixedly connected to the circumference of the stirring rod, the top surface of the fixture is fixedly connected to the stirring motor, the end of the stirring motor shaft is fixedly connected to the top end of the stirring rod, and the controller is electrically connected to the stirring motor, the ultrasonic transducer and the heating rod.

[0011] Preferably, the bottom end of the reaction tank body is fixedly connected to and communicated with a cleaning port, the cleaning port passes through a protective outer cover and a heat-insulating material, and a third valve is fixedly connected to the cleaning port.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The ultrasonic transducer of the present invention generates ultrasonic vibration through an ultrasonic probe, and the stirring component provides mechanical stirring and mixing. The ultrasonic vibration and mechanical stirring are integrated in the reaction tank body. The synergistic effect of ultrasound and stirring can not only improve the macroscopic physical mixing of the agent and the soil, but also improve the microscopic interface contact between the agent and the pollutant, improve the mixing effect, and at the same time improve the utilization rate of the agent and the remediation efficiency, thereby reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main structure of the first, second and third embodiments of the present invention;

[0015] Figure 2 It is a schematic diagram of the main body cutaway structure in the first, second and third embodiments of the present invention;

[0016] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0017] In the figure: 1. reaction tank body; 2. controller; 3. machine cover; 4. stirring assembly; 5. heating rod; 6. installation port; 7. ultrasonic transducer; 8. ultrasonic probe; 9. temperature sensor; 10. drug injection port; 11. discharge port; 12. discharge pipe; 13. first valve; 14. feed port; 15. feed pipe; 16. second valve; 17. pump; 18. cleaning port; 19. third valve; 20. protective cover; 21. thermal insulation material; 41. fixture; 42. stirring rod; 43. stirring blade; 44. stirring motor. DETAILED DESCRIPTION

[0018] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0019] Embodiment 1:

[0020] See also Figure 1-3The present invention provides a technical solution: an integrated device for ultrasonic enhanced soil remediation, including a reaction tank body 1 and a controller 2. The top surface of the reaction tank body 1 is fixedly connected to a machine cover 3. A stirring assembly 4 is arranged at the center of the machine cover 3. Three mounting openings 6 are evenly and vertically opened on the machine cover 3. An ultrasonic transducer 7 is fixedly connected to the top surface of the machine cover 3 corresponding to each mounting opening 6. An ultrasonic probe 8 is fixedly connected to the bottom of the ultrasonic transducer 7. The ultrasonic probe 8 passes through the mounting opening 6 and is located inside the reaction tank body 1. Two heating rods 5 are vertically sleeved on the machine cover 3. The lower part of the heating rod 5 is located inside the reaction tank body 1. The ultrasonic transducer 7 generates ultrasonic vibration through the ultrasonic probe 8 to stir the reaction tank body 1. Component 4 provides mechanical stirring and mixing, and integrates ultrasonic vibration and mechanical stirring in the reaction tank body 1. The equipment occupies a small area and is easy to operate. At the same time, the synergistic effect of ultrasound and stirring can not only improve the macroscopic physical mixing of the agent and the soil, but also improve the microscopic interface contact between the agent and the pollutant, thereby improving the utilization rate of the agent and the remediation efficiency and reducing costs. The ultrasonic probe 8 is installed through the installation port 6. The ultrasonic probe 8 with different ultrasonic frequencies can be set according to different pollutant categories, or dual-frequency or multi-frequency ultrasonic waves can be used to hedge standing waves, reduce energy weakening areas, promote uniform energy distribution, improve remediation efficiency, reduce energy consumption, and save costs.

[0021] Embodiment 2:

[0022] See also Figure 1-3 , which is the second embodiment of the present invention. This embodiment is based on the previous embodiment. A protective outer cover 20 is arranged outside the reaction tank body 1, and a thermal insulation material 21 is fixedly connected between the inner wall of the protective outer cover 20 and the outer wall of the reaction tank body 1, so as to reduce energy loss such as heat energy caused by external environmental factors and indirectly reduce energy consumption.

[0023] A plurality of temperature sensors 9 are evenly fixed to the inner wall of the reaction tank body 1, a reagent injection port 10 is fixed to the machine cover 3, and the reagent injection port 10 is connected to the interior of the reaction tank body 1. The temperature sensor 9 can detect the internal temperature of the reaction tank body 1, and the controller 2 can timely adjust the heating rod 5, preset the optimum temperature according to the properties of the pollutants and the cavitation effect, and realize dynamic adjustment, which can enhance the repair efficiency and promote the removal of difficult-to-degrade pollutants.

[0024] A discharge port 11 is provided at one side of the bottom of the reaction tank body 1, and a feed port 14 is provided at the other side of the bottom of the reaction tank body 1. The discharge port 11 is fixedly connected to and communicated with one end of a discharge pipe 12, and the other end of the discharge pipe 12 is located outside the protective outer cover 20. A first valve 13 is fixedly connected to the discharge pipe 12, and the discharge pipe 12 passes through the protective outer cover 20 and the thermal insulation material 21. The feed port 14 is fixedly connected to and communicated with one end of a feed pipe 15, and the other end of the feed pipe 15 is located outside the protective outer cover 20 and fixedly connected to a pump 17. A second valve 16 is fixedly connected to the feed pipe 15, and the feed pipe 15 passes through the protective outer cover 20 and the thermal insulation material 21. The feed is fed by the pump 17. By accurately calculating the processing time (i.e., the residence time of the material), the continuous operation of the device can be realized, manpower investment can be saved, and the automation and efficiency of the soil remediation process can be realized.

[0025] The stirring assembly 4 includes a fixture 41 fixedly connected to the center of the top surface of the machine cover 3, the fixture 41 is rotatably connected to the top end of a stirring rod 42, the stirring rod 42 is located at the center position inside the reaction tank body 1, and a plurality of stirring blades 43 are evenly fixedly connected to the circumference of the stirring rod 42. The top surface of the fixture 41 is fixedly connected to a stirring motor 44, and the end of the rotating shaft of the stirring motor 44 is fixedly connected to the top end of the stirring rod 42. The controller 2 is electrically connected to the stirring motor 44, the ultrasonic transducer 7 and the heating rod 5.

[0026] The bottom end of the reaction tank body 1 is fixedly connected to and communicated with a cleaning port 18 , which passes through a protective outer cover 20 and a heat-insulating material 21 . A third valve 19 is fixedly connected to the cleaning port 18 . The cleaning port 18 can realize self-cleaning of the reaction tank body 1 , thereby extending the service life of the reaction tank body 1 .

[0027] Embodiment 3:

[0028] See also Figure 1-3 , which is the third embodiment of the present invention. This embodiment is based on the above two embodiments. When the present invention is used, the soil-water mixture material can be pumped into the tank body from the feed port 14, and after being processed, it is discharged from the discharge port 11, and the material residence time is accurately controlled. The agent is added to the reaction tank body 1 from the agent injection port 10, and mixed by ultrasonic vibration and mechanical stirring of the stirring component 4. During the mixing process, the temperature sensor 9 can detect the internal temperature of the reaction tank body 1, and the controller 2 can timely regulate the heating rod 5. The optimum temperature is preset according to the nature of the pollutant and the cavitation effect to complete the soil remediation reaction; the ultrasonic transducer 7 of the present invention generates ultrasonic vibration through the ultrasonic probe 8, and the stirring component 4 provides mechanical stirring and mixing. The ultrasonic vibration and mechanical stirring are integrated in the reaction tank body 1. The synergistic effect of ultrasound and stirring can not only improve the macroscopic physical mixing of the agent and the soil, but also improve the microscopic interface contact between the agent and the pollutant, improve the mixing effect, and at the same time improve the utilization rate of the agent and the remediation efficiency, and reduce the cost.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated device for ultrasonic enhanced soil remediation, comprising a reaction tank (1) and a controller (2), characterized in that: The top surface of the reaction tank body (1) is fixedly connected to a machine cover (3), a stirring assembly (4) is arranged at the center of the machine cover (3), three mounting openings (6) are evenly and vertically provided on the machine cover (3), an ultrasonic transducer (7) is fixedly connected to the top surface of the machine cover (3) corresponding to each mounting opening (6), an ultrasonic probe (8) is fixedly connected to the bottom of the ultrasonic transducer (7), the ultrasonic probe (8) passes through the mounting opening (6) and is located inside the reaction tank body (1), two heating rods (5) are vertically sleeved on the machine cover (3), and the lower part of the heating rods (5) is located inside the reaction tank body (1).

2. The integrated device for ultrasonic enhanced soil remediation according to claim 1, characterized in that: A protective outer cover (20) is arranged outside the reaction tank body (1), and a heat-insulating material (21) is fixedly connected between the inner wall of the protective outer cover (20) and the outer wall of the reaction tank body (1).

3. The integrated device for ultrasonic enhanced soil remediation according to claim 1, characterized in that: A plurality of temperature sensors (9) are evenly fixed to the inner wall of the reaction tank body (1), and a medicine injection port (10) is fixed to the cover (3), wherein the medicine injection port (10) is connected to the interior of the reaction tank body (1).

4. The integrated device for ultrasonic enhanced soil remediation according to claim 2, characterized in that: A discharge port (11) is provided at one side of the bottom of the reaction tank body (1), and a feed port (14) is provided at the other side of the bottom of the reaction tank body (1); the discharge port (11) is fixedly connected to and communicated with one end of a discharge pipe (12); the other end of the discharge pipe (12) is located outside the protective outer cover (20); a first valve (13) is fixedly connected to the discharge pipe (12); the discharge pipe (12) passes through the protective outer cover (20) and the thermal insulation material (21); the feed port (14) is fixedly connected to and communicated with one end of a feed pipe (15); the other end of the feed pipe (15) is located outside the protective outer cover (20) and is fixedly connected to a pump (17); a second valve (16) is fixedly connected to the feed pipe (15); the feed pipe (15) passes through the protective outer cover (20) and the thermal insulation material (21).

5. The integrated device for ultrasonic enhanced soil remediation according to claim 1, characterized in that: The stirring assembly (4) comprises a fixing device (41) fixedly connected to the center of the top surface of the machine cover (3); the fixing device (41) is rotatably connected to the top end of a stirring rod (42); the stirring rod (42) is located at the center position inside the reaction tank body (1); a plurality of stirring blades (43) are evenly fixedly connected to the circumference of the stirring rod (42); the top surface of the fixing device (41) is fixedly connected to a stirring motor (44); the end of the rotating shaft of the stirring motor (44) is fixedly connected to the top end of the stirring rod (42); and the controller (2) is electrically connected to the stirring motor (44), the ultrasonic transducer (7) and the heating rod (5).

6. The integrated device for ultrasonic enhanced soil remediation according to claim 2, characterized in that: The bottom end of the reaction tank body (1) is fixedly connected to and communicates with a cleaning port (18), the cleaning port (18) passes through a protective outer cover (20) and a heat-insulating material (21), and a third valve (19) is fixedly connected to the cleaning port (18).

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