Soil remediation device for PCBs based on mechanochemical method

Abstract

The utility model provides a PCBs soil remediation device based on mechanical chemistry method, including base, the top side of base is provided with the box frame, and the bottom of top board is provided with the processing jar, and the inside of base is provided with the drainage groove, and the inside of drainage groove is provided with a plurality of drainage channels, and the top of drainage groove is provided with a plurality of ultraviolet fluorescent tubes, the utility model sets up processing jar, and sets up liquid storage tank and active agent box simultaneously in the side of processing jar, can pass through liquid storage tank and active agent box respectively to processing jar inside and pour into eluent and surface active agent, and pass through conveyer belt one to processing jar inside and feed, and motor drives the rotation of rotating lever and stirring axle pole, thereby to the pollution sandy soil of adding surface active agent and elutes, and the sand of elution passes conveyer belt two and exports, and the pollution liquid pours into the inside of drainage groove, when the pollution liquid of elution flows into the inside of waste liquid tank in drainage channel, still can pass through ultraviolet fluorescent tube and photolyzes, and further improves the processing effect of PCBs.

Description

Technical Field

[0001] This utility model belongs to the field of soil pollution treatment technology, and relates to a PCBs soil remediation device based on mechanochemical method. Background Technology

[0002] PCBs are a group of chemically stable chloroaromatic compounds and important endocrine disruptors, which have become one of the world's major pollutants. Soil is one of the main destinations for PCBs. PCBs in soil can enter the food chain through plant accumulation and biomagnification, thus having a greater impact on human health. Therefore, effective and practical methods for determining the content of PCBs in soil and research on the remediation of contaminated soil have become very important.

[0003] Due to the non-biodegradability of PCBs, chemical remediation plays an irreplaceable role in the treatment of PCB-contaminated soil. This primarily focuses on thermal treatment and photodegradation. Pyrolysis, also known as high-temperature destruction, can achieve a degradation rate of over 99% for PCBs, but it is generally expensive. Photodegradation mainly involves ultraviolet light degradation. Although PCBs are physically and chemically stable and resistant to biodegradation, they are sensitive to ultraviolet light under certain conditions. Using surfactants to elute PCBs from contaminated soil, followed by photodegradation of the PCB contaminants in the eluent, is a novel method for treating PCB-contaminated soil. However, a remediation device suitable for this method has not yet been developed. Summary of the Invention

[0004] The purpose of this invention is to provide a soil remediation device for PCBs based on mechanochemical methods to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A PCBs soil remediation device based on mechanochemical methods includes a base, a treatment tank, a waste liquid tank, a liquid guide pipe, a frame, and a storage tank. The frame is located on one side of the top of the base, and the storage tank is located on top of the frame. A first conveyor belt and a second conveyor belt are located on one side of the frame, with the first conveyor belt positioned above the second conveyor belt. A top plate is fixedly connected to one side of the frame, and the treatment tank is located at the bottom of the top plate. A drainage trough is provided inside the base and is connected to the water outlet at the bottom of the treatment tank. Multiple drainage channels are provided inside the drainage trough, and multiple ultraviolet lamps are installed at the top of the drainage channels.

[0007] In the above-mentioned PCBs soil remediation device based on mechanochemical method, a waste liquid tank is provided on the side of the base, and one end of the drainage channel is connected to the waste liquid tank located at the bottom of the base.

[0008] In the above-mentioned PCBs soil remediation device based on mechanochemical method, a liquid guide pipe is fixedly connected to the top of the waste liquid tank, and the liquid guide pipe is fixedly connected to one side of the top of the treatment tank through a pressure pump.

[0009] In the above-mentioned PCBs soil remediation device based on mechanochemical method, a drive motor is fixedly installed on the top of the top plate, the output end of the drive motor is fixedly connected to the rotating rod at the bottom of the top plate, and multiple stirring shafts are evenly arranged on the outer side of the rotating rod.

[0010] In the above-mentioned PCBs soil remediation device based on mechanochemical method, an active agent tank is provided on the top of the top plate, and the drain port of the active agent tank is connected to the inside of the treatment tank through a conduit.

[0011] In the above-mentioned PCBs soil remediation device based on mechanochemical method, a feed port is provided on one side of the top of the treatment tank, and a discharge port is provided on one side of the bottom of the treatment tank. One end of the first conveyor belt is placed inside the feed port, and one end of the second conveyor belt is placed inside the discharge port.

[0012] Compared with existing technologies, the advantages of this utility model's PCBs soil remediation device based on mechanochemical methods are as follows:

[0013] This application includes a treatment tank, with a storage tank and an surfactant tank on its side. Eluent and surfactant are respectively introduced into the treatment tank through the storage tank and surfactant tank, and the material is fed into the treatment tank via a conveyor belt. A motor drives a rotating rod and a stirring shaft to wash away the contaminated sand containing surfactant. After washing, the sand is discharged via a second conveyor belt, while the contaminated liquid flows into a drain tank. When the washed contaminated liquid flows into the waste liquid tank through the drain channel, it can be photolyzed by ultraviolet lamps to further improve the treatment effect of PCBs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the PCBs soil remediation device based on the mechanochemical method of this utility model.

[0015] Figure 2 This is a schematic diagram of the internal structure of the base of the PCBs soil remediation device based on the mechanochemical method of this utility model.

[0016] Figure 3 This is a schematic diagram of the structure of the PCBs soil remediation device based on the mechanochemical method of this utility model.

[0017] In the diagram, 1. Base; 2. Processing tank; 3. Waste liquid tank; 4. Liquid guide pipe; 5. Box frame; 6. Liquid storage tank; 7. Conveyor belt one; 8. Conveyor belt two; 9. Drainage trough; 10. Drainage channel; 11. Ultraviolet lamp tube; 12. Top plate; 13. Drive motor; 14. Active agent box; 15. Rotating rod; 16. Stirring shaft. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0019] The PCBs soil remediation device based on the mechanochemical method includes a base 1, a treatment tank 2, a waste liquid tank 3, a liquid guide pipe 4, a frame 5, and a storage tank 6. The frame 5 is installed on one side of the top of the base 1, and the storage tank 6 is installed on the top of the frame 5. A first conveyor belt 7 and a second conveyor belt 8 are installed on one side of the frame 5, with the first conveyor belt 7 positioned at the top of the second conveyor belt 8. A top plate 12 is fixedly connected to one side of the top of the frame 5, and the treatment tank 2 is installed at the bottom of the top plate 12. A drainage trough 9 is opened inside the base 1, and the drainage trough 9 is connected to the water outlet port at the bottom of the treatment tank 2. Multiple drainage channels 10 are opened inside the drainage trough 9, and multiple ultraviolet lamps 11 are installed at the top of the drainage channels 10.

[0020] like Figure 1 , Figure 2 , Figure 3 As shown, this utility model is a PCBs soil remediation device based on the mechanochemical method. Specifically, a waste liquid tank 3 is provided on the side of the base 1, and one end of the drainage channel 10 is connected to the waste liquid tank 3 located at the bottom of the base 1. The treated waste liquid can be discharged back into the treatment tank 2 for reuse, which can effectively save water resources.

[0021] like Figure 1 , Figure 2 , Figure 3 As shown, the present invention is a PCBs soil remediation device based on the mechanochemical method. Specifically, a liquid guide pipe 4 is fixedly connected to the top of the waste liquid tank 3, and the liquid guide pipe 4 is fixedly connected to one side of the top of the treatment tank 2 through a pressure pump.

[0022] like Figure 1 , Figure 2 , Figure 3 As shown, the present invention is a PCBs soil remediation device based on the mechanochemical method. Specifically, a drive motor 13 is fixedly installed on the top of the top plate 12. The output end of the drive motor 13 is fixedly connected to the rotating rod 15 at the bottom of the top plate 12. Multiple stirring shafts 16 are evenly arranged on the outer side of the rotating rod 15.

[0023] like Figure 1 , Figure 2 , Figure 3 As shown, the present invention is a PCBs soil remediation device based on the mechanochemical method. Specifically, an active agent box 14 is provided on the top of the top plate 12, and the drain port of the active agent box 14 is connected to the interior of the treatment tank 2 through a conduit.

[0024] like Figure 1 , Figure 2 , Figure 3 As shown, the present invention relates to a PCBs soil remediation device based on the mechanochemical method. Specifically, the top side of the treatment tank 2 has a feed port, and the bottom side of the treatment tank 2 has a discharge port. One end of the first conveyor belt 7 is placed inside the feed port, and one end of the second conveyor belt 8 is placed inside the discharge port. The first conveyor belt 7 and the second conveyor belt 8 in this application are existing publicly disclosed structures and will not be described in detail.

[0025] This utility model relates to a PCBs soil remediation device based on a mechanochemical method. A storage tank 6 and an surfactant tank 14 are installed on the side of the treatment tank 2. Eluent and surfactant are respectively discharged into the treatment tank 2 through the storage tank 6 and surfactant tank 14. Feeding is also carried out through a conveyor belt 7. A drive motor 13 rotates a rotating rod 15 and a stirring shaft 16, thereby chemically eluting the contaminated sand containing surfactant. The eluted sand is discharged through a conveyor belt 8, while the resulting contaminated liquid is discharged into a drain trough 9. When the eluted contaminated liquid flows separately into the waste liquid tank 3 through the drain channel 10, ultraviolet lamps 11 can further photodegrade the PCBs, improving the treatment effect.

[0026] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A PCBs soil remediation device based on mechanochemical method, comprising a base (1), a treatment tank (2), a waste liquid tank (3), a liquid guide pipe (4), a frame (5), and a storage tank (6), characterized in that, A box frame (5) is provided on one side of the top of the base (1), and a liquid storage tank (6) is provided on the top of the box frame (5). A first conveyor belt (7) and a second conveyor belt (8) are provided on one side of the box frame (5), and the first conveyor belt (7) is located at the top of the second conveyor belt (8). A top plate (12) is fixedly connected to one side of the top of the box frame (5), and a processing tank (2) is provided at the bottom of the top plate (12). A drain trough (9) is provided inside the base (1), and the drain trough (9) is connected to the water outlet port at the bottom of the processing tank (2). Multiple drain channels (10) are provided inside the drain trough (9), and multiple ultraviolet lamps (11) are provided at the top of the drain channels (10).

2. The PCBs soil remediation device based on mechanochemical method according to claim 1, characterized in that, A waste liquid tank (3) is provided on the side of the base (1), and one end of the drain channel (10) is connected to the waste liquid tank (3) provided at the bottom of the base (1).

3. The PCBs soil remediation device based on mechanochemical method according to claim 2, characterized in that, The top of the waste liquid tank (3) is fixedly connected to a liquid guide pipe (4), which is fixedly connected to one side of the top of the treatment tank (2) via a pressure pump.

4. The PCBs soil remediation device based on mechanochemical method according to claim 1, characterized in that, A drive motor (13) is fixedly installed on the top of the top plate (12). The output end of the drive motor (13) is fixedly connected to the rotating rod (15) at the bottom of the top plate (12). Multiple stirring shafts (16) are evenly arranged on the outer side of the rotating rod (15).

5. The PCBs soil remediation device based on mechanochemical method according to claim 1, characterized in that, The top of the top plate (12) is provided with an activator box (14), and the drain port of the activator box (14) is connected to the interior of the treatment tank (2) through a conduit.

6. The PCBs soil remediation device based on mechanochemical method according to claim 1, characterized in that, The processing tank (2) has a feed port on one side of the top and a discharge port on one side of the bottom. One end of the first conveyor belt (7) is placed inside the feed port, and one end of the second conveyor belt (8) is placed inside the discharge port.

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