Microwave remediation equipment for organic contaminated soil

Abstract

The utility model relates to the technical field of soil remediation, in particular to microwave remediation equipment for organic contaminated soil, which comprises a microwave treatment box body, a plurality of microwave incident ports are uniformly arranged on the surface of the outer wall of the microwave treatment box body, waveguides are fixedly connected inside the microwave incident ports, and the waveguides are externally connected with microwave generators. A feeding device is arranged at one end of the microwave treatment box, a discharging device is arranged at the other end of the microwave treatment box, a tail gas treatment device is arranged at the top end of the microwave treatment box, a driving motor is fixedly connected to one end of the microwave treatment box, and a stirring paddle is connected to the output end of the driving motor through a spline. Through the arrangement of a plurality of microwave incident ports and the cooperation of the stirring effect of the stirring paddle on the soil, the soil is continuously turned over in the conveying process of the spiral stirring paddle, it is guaranteed that the soil makes full contact with microwaves, the microwaves can evenly act on the soil, it is guaranteed that the soil is evenly heated in the remediation process, and the remediation effect and remediation efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of soil remediation technology, specifically to a microwave remediation device for organically contaminated soil. Background Technology

[0002] With the rapid development of industrialization and urbanization, soil organic pollution has become increasingly serious. Organic pollutants such as polycyclic aromatic hydrocarbons, petroleum hydrocarbons, and pesticides remain in large quantities in the soil, which not only damages the soil ecosystem but may also harm human health through the food chain.

[0003] Currently, common soil organic pollution remediation technologies include thermal desorption, chemical oxidation, and bioremediation. However, these methods suffer from problems such as low treatment efficiency, high energy consumption, easy generation of secondary pollution, or long remediation cycles. Microwave remediation technology, as an emerging soil remediation technology, utilizes the interaction between microwaves and polar molecules in the soil to generate a thermal effect, which can rapidly heat the soil and cause organic pollutants to volatilize or decompose quickly.

[0004] However, existing microwave remediation equipment suffers from problems such as uneven microwave distribution leading to inconsistent soil heating and poor remediation results; poor soil flow within the equipment, resulting in localized accumulation and affecting remediation efficiency; and a lack of effective exhaust gas treatment devices, causing direct emission of organic waste gas generated during the remediation process, which can lead to secondary pollution. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a microwave remediation device for organically contaminated soil, which can effectively solve the problems mentioned in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a microwave remediation device for organically contaminated soil, comprising: a microwave processing chamber, with a plurality of microwave inlets evenly distributed on the outer wall surface of the microwave processing chamber, a waveguide fixedly connected inside the microwave inlets, a microwave generator connected to the outside of the waveguide, a feed inlet at one end of the microwave processing chamber, a feeding device provided on one side of the feed inlet, a discharge outlet at the other end of the microwave processing chamber, a discharge device provided on one side of the discharge outlet, an exhaust outlet at the top of the microwave processing chamber, an exhaust gas treatment device provided at the top of the exhaust outlet, and a drive motor fixedly connected to one end of the microwave processing chamber, with a stirring paddle connected to the output end of the drive motor via a spline.

[0008] Furthermore, a support is fixedly connected to the bottom of the microwave processing chamber, and a stirring paddle is rotatably connected inside the microwave processing chamber, with the stirring paddle being spiral-shaped.

[0009] Furthermore, the feeding device includes a feeding hopper, a conveying pipe is fixedly connected to one side of the feeding hopper, and the top end of the conveying pipe is fixedly connected to the feeding port.

[0010] Furthermore, a conveying motor is fixedly connected to the bottom end of the conveying pipe, and a conveying auger is connected to the output end of the conveying motor via a spline. The conveying auger is rotatably connected inside the conveying pipe.

[0011] Furthermore, the discharge device includes a discharge pipe, which is fixedly connected to one side of the discharge port, and a discharge valve is fixedly connected to the top of the discharge pipe.

[0012] Furthermore, the exhaust gas treatment device includes a condensation recovery unit, an activated carbon adsorption unit is fixedly connected to the top of the condensation recovery unit, and an exhaust fan is fixedly connected to the top of the activated carbon adsorption unit.

[0013] The technical solution provided by this utility model, compared with the known prior art, has the following advantages:

[0014] Beneficial effects:

[0015] 1. The microwave treatment chamber has several microwave inlet ports evenly distributed on its outer wall. During use, it works in conjunction with a stirring paddle to agitate the soil. This ensures that the soil is constantly turned over during transport by the spiral stirring paddle, guaranteeing full contact between the soil and the microwaves. This allows the microwaves to act evenly on the soil, ensuring uniform heating during the remediation process and improving the remediation effect and efficiency. At the same time, the stirring paddle can also propel the soil forward within the microwave treatment chamber, preventing soil accumulation and allowing the soil to pass through the microwave treatment chamber quickly and stably, completing the remediation process.

[0016] 2. By setting up the exhaust gas treatment device, the organic waste gas generated during the soil remediation process is collected and condensed through the condensation recovery unit, and most of the organic pollutants are converted into liquid for recovery. The activated carbon adsorption unit further adsorbs the residual organic pollutants in the condensed waste gas. The exhaust fan provides power so that the waste gas can flow smoothly in the exhaust gas treatment device, thereby enabling the condensation recovery and activated carbon adsorption treatment of the organic waste gas generated during the remediation process, fully removing organic pollutants, avoiding secondary pollution, and meeting environmental protection requirements. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1This is a schematic diagram of the overall first-view structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall second-view structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the microwave processing box of this utility model;

[0021] Figure 4 This is a schematic diagram of the feeding device structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the exhaust gas treatment device of this utility model.

[0023] The labels in the diagram represent:

[0024] 1. Microwave processing chamber; 101. Microwave inlet; 102. Feed inlet; 103. Discharge outlet; 104. Gas outlet; 2. Support frame; 3. Waveguide; 4. Drive motor; 5. Stirring paddle; 6. Feeding device; 601. Feed hopper; 602. Conveying pipe; 603. Conveying motor; 604. Conveying auger; 7. Discharge device; 701. Discharge pipe; 702. Discharge valve; 8. Exhaust gas treatment device; 801. Condensation recovery unit; 802. Activated carbon adsorption unit; 803. Exhaust fan. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] The present invention will be further described below with reference to the embodiments.

[0027] Example 1:

[0028] Reference Figure 1-5This first embodiment of the present invention discloses a microwave remediation device for organically contaminated soil, comprising: a microwave processing chamber 1, a plurality of microwave inlet ports 101 uniformly opened on the outer wall surface of the microwave processing chamber 1, a waveguide 3 fixedly connected inside the microwave inlet port 101, a microwave generator connected to the outside of the waveguide 3, a feed port 102 opened at one end of the microwave processing chamber 1, a feeding device 6 provided on one side of the feed port 102, a discharge port 103 opened at the other end of the microwave processing chamber 1, a discharge device 7 provided on one side of the discharge port 103, an air outlet 104 opened at the top of the microwave processing chamber 1, a tail gas treatment device 8 provided at the top of the air outlet 104, a drive motor 4 fixedly connected to one end of the microwave processing chamber 1, and a stirring paddle 5 connected to the output end of the drive motor 4 via a spline.

[0029] The microwave treatment chamber 1 has several microwave inlet ports 101 evenly distributed on its outer wall. During use, it works in conjunction with the stirring paddle 5 to agitate the soil, ensuring that the soil is constantly turned over during transport by the spiral stirring paddle 5. This ensures that the soil is in full contact with the microwaves, allowing the microwaves to act evenly on the soil. This ensures that the soil is heated evenly during the repair process, improving the repair effect and efficiency. At the same time, the stirring paddle 5 can also push the soil forward within the microwave treatment chamber 1, preventing soil accumulation and allowing the soil to pass through the microwave treatment chamber 1 quickly and stably, completing the repair process.

[0030] Example 2:

[0031] Reference Figure 1-5 This is the second embodiment of the present invention, which differs from the first embodiment in that:

[0032] A bracket 2 is fixedly connected to the bottom of the microwave processing chamber 1. A stirring paddle 5 is rotatably connected inside the microwave processing chamber 1. The stirring paddle 5 is spiral-shaped. The feeding device 6 includes a feeding hopper 601. A conveying pipe 602 is fixedly connected to one side of the feeding hopper 601. The top end of the conveying pipe 602 is fixedly connected to the feeding port 102. A conveying motor 603 is fixedly connected to the bottom end of the conveying pipe 602. A conveying auger 604 is connected to the output end of the conveying motor 603 through a spline. The conveying auger 604 is rotatably connected inside the conveying pipe 602.

[0033] The discharge device 7 includes a discharge pipe 701, which is fixedly connected to one side of the discharge port 103. A discharge valve 702 is fixedly connected to the top of the discharge pipe 701. The exhaust gas treatment device 8 includes a condensation recovery unit 801, which is fixedly connected to the top of the condensation recovery unit 801. An activated carbon adsorption unit 802 is fixedly connected to the top of the activated carbon adsorption unit 802. An exhaust fan 803 is fixedly connected to the top of the activated carbon adsorption unit 802.

[0034] With the exhaust gas treatment device 8 in place, the organic waste gas generated during the soil remediation process is collected and condensed by the condensation recovery unit 801, converting most of the organic pollutants into liquid for recovery. The activated carbon adsorption unit 802 further adsorbs the residual organic pollutants in the condensed waste gas. The exhaust fan 803 provides power to ensure that the waste gas can flow smoothly within the exhaust gas treatment device 8. This allows for the condensation recovery and activated carbon adsorption treatment of the organic waste gas generated during the remediation process, effectively removing organic pollutants, avoiding secondary pollution, and meeting environmental protection requirements.

[0035] The remaining structure is the same as that in Example 1.

[0036] The workflow of this utility model is as follows:

[0037] First, the organic contaminated soil to be remediated is poured into the feed hopper 601 of the feeding device 6. The conveying motor 603 is started to drive the conveying auger 604 to rotate. The conveying auger 604 conveys the soil to the feed inlet 102 of the microwave treatment box 1 at a set speed and quantity. After the soil enters the microwave treatment box 1, the drive motor 4 is started to drive the stirring paddle 5 to rotate. The stirring paddle 5 stirs the soil. During the stirring process, the soil will move forward along the rotation direction of the stirring paddle 5.

[0038] Secondly, the microwave generator is started. The microwaves generated by the microwave generator are introduced into the microwave processing box 1 through the microwave inlet 101 via the waveguide 3 to heat the soil. Several microwave inlets 101 are evenly opened on the outer wall of the microwave processing box 1. During use, the stirring paddle 5 is used to stir the soil, so that the soil is constantly turned over during the conveying process of the spiral stirring paddle 5, ensuring that the soil and microwaves are in full contact. This allows the microwaves to act on the soil evenly, ensuring that the soil is heated evenly during the repair process, improving the repair effect and efficiency. At the same time, the stirring paddle 5 can also push the soil forward in the microwave processing box 1, avoiding soil accumulation, so that the soil can pass through the microwave processing box 1 quickly and stably to complete the repair process.

[0039] Finally, during the soil remediation process, organic pollutants in the soil are heated and volatilized. The resulting organic waste gas enters the exhaust gas treatment device 8 through the outlet 104. The organic waste gas first enters the condensation and recovery unit 801. In the condensation and recovery unit 801, most of the organic pollutants are condensed into liquid for recycling. After condensation treatment, the waste gas enters the activated carbon adsorption unit 802. The activated carbon adsorption unit 802 further adsorbs the residual organic pollutants in the waste gas. Finally, under the action of the exhaust fan 803, the qualified waste gas is discharged into the atmosphere. After the soil is remediated in the microwave treatment box 1, it enters the discharge pipe 701 of the discharge device 7 through the discharge port 103. Then, the discharge speed is controlled by controlling the flow rate of the discharge valve 702, and then the remediated soil is transported to the subsequent treatment stage.

[0040] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A microwave remediation device for organically contaminated soil, characterized in that, include: A microwave processing chamber (1) has several microwave inlet ports (101) evenly distributed on the outer wall surface. A waveguide (3) is fixedly connected inside the microwave inlet port (101). A microwave generator is connected to the waveguide (3). A feed port (102) is provided at one end of the microwave processing chamber (1). A feeding device (6) is provided on one side of the feed port (102). A discharge port (103) is provided at the other end of the microwave processing chamber (1). A discharge device (7) is provided on one side of the discharge port (103). An air outlet (104) is provided at the top of the microwave processing chamber (1). A tail gas treatment device (8) is provided at the top of the air outlet (104). A drive motor (4) is fixedly connected to one end of the microwave processing chamber (1). A stirring paddle (5) is connected to the output end of the drive motor (4) through a spline.

2. The microwave remediation equipment for organically contaminated soil according to claim 1, characterized in that, The bottom end of the microwave processing box (1) is fixedly connected to a bracket (2), and the stirring paddle (5) is rotatably connected inside the microwave processing box (1). The stirring paddle (5) is spiral in shape.

3. The microwave remediation equipment for organically contaminated soil according to claim 1, characterized in that, The feeding device (6) includes a feeding hopper (601), a conveying pipe (602) is fixedly connected to one side of the feeding hopper (601), and the top end of the conveying pipe (602) is fixedly connected to the feeding port (102).

4. The microwave remediation equipment for organically contaminated soil according to claim 3, characterized in that, The bottom end of the conveying pipe (602) is fixedly connected to a conveying motor (603), and the output end of the conveying motor (603) is connected to a conveying auger (604) via a spline. The conveying auger (604) is rotatably connected inside the conveying pipe (602).

5. The microwave remediation equipment for organically contaminated soil according to claim 1, characterized in that, The discharge device (7) includes a discharge pipe (701), which is fixedly connected to one side of the discharge port (103), and a discharge valve (702) is fixedly connected to the top end of the discharge pipe (701).

6. The microwave remediation equipment for organically contaminated soil according to claim 1, characterized in that, The exhaust gas treatment device (8) includes a condensation recovery unit (801), an activated carbon adsorption unit (802) is fixedly connected to the top of the condensation recovery unit (801), and an exhaust fan (803) is fixedly connected to the top of the activated carbon adsorption unit (802).

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