An organic contaminated soil bioremediation device

Abstract

The utility model discloses an organic contaminated soil bioremediation device, including head reactor cover, horizontal cylinder reactor cabin, drive system, tail reactor cover, the both ends of horizontal cylinder reactor cabin are rotatedly connected with head reactor cover and tail reactor cover respectively, and the height of head reactor cover bottom is higher than the height of tail reactor cover bottom, to make horizontal cylinder reactor cabin present certain angle inclination and place, and horizontal cylinder reactor cabin rotates by drive system drive. Contaminated soil enters horizontal cylinder reactor cabin through head reactor cover, and horizontal cylinder reactor cabin rotates low speed under the action of drive system, and the soil is constantly turned over in the cabin, guarantees soil and microorganism, oxygen etc. full contact reaction repair, and soil is constantly pushed to tail reactor cover by gravity, and the soil after final repair is pushed to tail reactor cover and is discharged through the discharge port of lower part, realizes the continuous operation of soil from feeding to discharging whole process.

Description

Technical Field

[0001] This utility model relates to the field of organic soil bioremediation technology, specifically to an organic soil bioremediation device. Background Technology

[0002] With rapid industrial development, soil organic pollution has become an increasingly prominent problem, posing a serious threat to the ecological environment and human health. Bioremediation technology, due to its advantages of low cost, high efficiency, and environmental friendliness, has been widely used in the remediation of organically polluted soil. It mainly includes remediation techniques involving plants, animals, microorganisms, and combined biological methods. Among these, microbial remediation is one of the main pathways for removing organic pollutants from soil. It primarily utilizes the adsorption and dissolution effects of microorganisms, combined with intracellular metabolism, to achieve the degradation and absorption of pollutants. Because microorganisms have strong adaptability and variability to the environment, they differentiate into diverse metabolic types during their survival, enabling them to degrade various organic pollutants in the soil. Therefore, microbial remediation technology has experienced rapid development.

[0003] Soil microbial remediation technology can be divided into in-situ microbial remediation and ex-situ microbial remediation. Among them, ex-situ microbial remediation has the advantages of high efficiency and controllability, optimized remediation environmental conditions, 30%-50% higher degradation efficiency than in-situ remediation, precise monitoring of the remediation process, quantitative verification of pollutant removal rate, and the ability to eliminate secondary pollution with supporting treatment facilities. It is suitable for situations where organic pollutants are highly toxic, construction period is tight, or the site needs to be developed and constructed later.

[0004] Existing microbial ex-situ remediation technologies mainly include prefabricated bed methods, bioreactors, and biocomposting methods. The remediation devices involved in these technologies are mostly intermittently operated, which makes it difficult to meet the needs of large-scale soil remediation. At the same time, the remediation reaction process suffers from uneven material mixing, which affects the remediation effect.

[0005] Therefore, this patent application is filed. Utility Model Content

[0006] In response to the above-mentioned issues and to address the problems existing in the prior art, this utility model provides a bioremediation device for organic polluted soil. Through the rotation of the horizontal cylindrical reaction chamber and its own tilting design, the materials can be mixed evenly and continuously propelled towards the tail reactor hood by their own weight. This achieves continuous soil remediation from feeding to discharging, ensuring continuous operation of the reactor and enabling large-scale soil remediation work.

[0007] The purpose of this utility model is to provide a bioremediation device for organic polluted soil, including a head reactor cover, a horizontal cylindrical reaction chamber, a drive system, and a tail reactor cover. The two ends of the horizontal cylindrical reaction chamber are rotatably connected to the head reactor cover and the tail reactor cover, respectively. The bottom height of the head reactor cover is higher than the bottom height of the tail reactor cover, so that the horizontal cylindrical reaction chamber is placed at a certain angle. The horizontal cylindrical reaction chamber is driven to rotate by the drive system.

[0008] As a preferred design, the horizontal cylindrical reaction chamber is placed at an inclination angle of 1~3°.

[0009] As a preferred design, the drive system includes a large gear ring, a transmission gear, and a drive motor. The large gear ring is fixed to the outside of the horizontal cylindrical reaction chamber, the transmission gear meshes with the large gear ring, and the power output end of the drive motor is connected to the transmission gear.

[0010] As a preferred design, the head reactor hood is equipped with a feed hopper and an exhaust vent, with the feed hopper extending into the horizontal cylindrical reaction chamber.

[0011] As a preferred design, the feed hopper extends to the port of the horizontal cylindrical reaction chamber and is equipped with an openable rotating cover.

[0012] As a preferred design, the tail reactor cover is equipped with a discharge hopper and an air inlet pipe, which is connected to the horizontal cylindrical reaction chamber.

[0013] As a preferred design, it also includes a transmission mechanism, which includes a support assembly and a transmission belt. The support assembly includes a support column, a rotating shaft, a transmission roller, and a motor. The rotating shaft passes through the support column and is rotatably engaged with the support column. The transmission roller is sleeved on the outside of the rotating shaft. The power output end of the motor is connected to the rotating shaft. The transmission belt is wound around the transmission roller and sleeved on the horizontal cylindrical reaction chamber.

[0014] As a preferred design, the transmission mechanism is provided in two or more parts, each transmission mechanism including two or more support components arranged in parallel, and each transmission belt sequentially winds around each parallel transmission roller and is fitted onto the horizontal cylindrical reaction chamber.

[0015] As a preferred design, multiple transmission mechanisms are arranged on both sides of the drive system.

[0016] As a preferred design, the head reactor cover, drive system, and transmission mechanism are all mounted on a base fixing platform, and a steel bracket is installed at the bottom of the tail reactor cover.

[0017] The advantages of this utility model compared with the prior art are as follows:

[0018] (1) In this utility model, organic polluted soil with added microbial agent and adjusted physicochemical parameters is continuously fed into the horizontal cylindrical reaction chamber through the feed hopper on the head reactor cover. The horizontal cylindrical reaction chamber rotates axially at low speed under the action of the drive system, so that the organic polluted soil in the reaction chamber is continuously pushed along the axial direction of the tail reaction cover due to its own weight, until the remediated soil is pushed to the discharge hopper at the bottom of the tail reactor cover and discharged, thereby realizing the continuous operation of the soil from feeding to discharging and ensuring the continuous operation of the reactor.

[0019] (2) In this utility model, the horizontal cylindrical reaction chamber rotates slowly axially under the action of the drive system, so that the soil is constantly turned over in the chamber, ensuring that the soil is fully in contact with microorganisms, oxygen and other substances for remediation. At the same time, the rotation speed can be adjusted according to the reaction time to precisely control the residence time of the soil in the reaction chamber and ensure the remediation effect.

[0020] (3) In this utility model, an exhaust port is provided on the head reactor cover. An external exhaust fan can be connected as needed. The atmospheric air is drawn in from the discharge hopper at the bottom of the tail reactor cover by relying on negative pressure, flows through the reaction chamber and is discharged from the exhaust port, thereby supplying oxygen to the reaction chamber. At the same time, the volatile organic waste gas released by microbial degradation can also be drawn to the waste gas treatment system to avoid secondary pollution.

[0021] (4) In this utility model, according to the environmental temperature and soil moisture requirements of the microbial remediation process in the horizontal cylindrical reaction chamber, hot (steam) gas is introduced into the air inlet pipe on the rear side of the tail reactor cover to heat and humidify the horizontal cylindrical reaction chamber.

[0022] (5) The entire reactor can be integrated into the container chassis. The structure is compact and the integrated design facilitates relocation. It is suitable for small and medium-sized organic contaminated soil remediation projects. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a bioremediation device for organically polluted soil proposed in this utility model;

[0024] Figure 2 This is a schematic diagram of the transmission mechanism of a bioremediation device for organic polluted soil proposed in this utility model, wherein the electric motor in the transmission mechanism is not shown.

[0025] Figure 3 This is a front view and a cross-sectional view of the head reactor cover of a bioremediation device for organic polluted soil proposed in this utility model.

[0026] Figure 4 This is a schematic diagram of the feed hopper of a bioremediation device for organically polluted soil proposed in this utility model.

[0027] In the picture:

[0028] 1-Head reactor hood; 2-Horizontal cylindrical reaction chamber; 3-Drive system; 4-Support assembly; 5-Tail reactor hood; 6-Large gear ring; 7-Drive belt; 8-Foundation fixing platform; 9-Feed hopper; 10-Exhaust vent; 11-Discharge hopper; 12-Steel bracket; 13-Air inlet pipe; 14-Rotating cover plate; 15-Drive gear; 16-Drive motor; 17-Support column; 18-Rotating shaft; 19-Drive roller; 20-Electric motor. Detailed Implementation

[0029] The technical solutions of various 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 embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] The present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0032] Example 1:

[0033] like Figure 1As shown, an organic polluted soil bioremediation device includes a head reactor hood 1, a horizontal cylindrical reaction chamber 2, a drive system 3, and a tail reactor hood 5. The two ends of the horizontal cylindrical reaction chamber 2 are rotatably connected to the head reactor hood 1 and the tail reactor hood 5, respectively. The bottom of the head reactor hood 1 is higher than the bottom of the tail reactor hood 5, thus placing the horizontal cylindrical reaction chamber 2 at a certain angle, such as a tilt angle of 1~3°. The drive system 3 is connected to the horizontal cylindrical reaction chamber 2 and is used to drive the horizontal cylindrical reaction chamber 2 to rotate.

[0034] During operation, organically contaminated soil with added microbial agents and adjusted physicochemical parameters is first fed into the horizontal cylindrical reaction chamber 2 through the head reactor hood 1. The horizontal cylindrical reaction chamber 2 rotates axially under the action of the drive system 3, causing the soil to continuously tumble within the chamber. This ensures sufficient contact between the soil and microorganisms, oxygen, etc., promoting the full reaction and degradation of the organically contaminated soil and microorganisms within the horizontal cylindrical reaction chamber 2. Furthermore, because the horizontal cylindrical reaction chamber 2 is inclined from head to tail, the soil is continuously propelled axially along the tail reactor hood 5 under its own weight during rotation until the remediated soil is pushed to the tail reactor hood 5 and discharged, thus completing the soil remediation. The remediation device provided in this embodiment also achieves continuous operation of the soil from feeding to discharging, ensuring continuous reactor operation, increasing processing capacity, and enabling large-scale soil remediation work.

[0035] Furthermore, to ensure the rotational connection between the horizontal cylindrical reaction chamber 2 and the head reactor cover 1 and tail reactor cover 5, this embodiment designs a gap between both ends of the horizontal cylindrical reaction chamber 2 and the head reactor cover 1 and tail reactor cover 5, resulting in a non-contact connection. Of course, other methods, such as using adapter bearings, can also be used to achieve the rotational connection between the horizontal cylindrical reaction chamber 2 and the head and tail reactor covers 5; the specific structure will not be detailed here.

[0036] Furthermore, such as Figure 1 As shown, the drive system 3 is designed to include a large gear ring 6, a transmission gear 15, and a drive motor 16. The large gear ring 6 is fixed to the outside of the horizontal cylindrical reactor chamber 2, for example, by installing the large gear ring 6 at the upper 1 / 3 of the main body of the horizontal cylindrical reactor chamber 2. The transmission gear 15 located on the side meshes with the large gear ring 6, and the power output end of the drive motor 16 is connected to the transmission gear 15. When the drive motor 16 operates, it can drive the transmission gear 15 to rotate, thereby rotating the large gear ring 6 and causing the horizontal cylindrical reactor chamber 2 to rotate synchronously.

[0037] To further improve the rotational stability of the horizontal cylindrical reaction chamber 2, a transmission mechanism was also installed, such as... Figure 1 and Figure 2As shown, the transmission mechanism includes a support assembly 4 and a transmission belt 7. The support assembly 4 includes a support column 17, a rotating shaft 18, a transmission roller 19, and a motor 20. Figure 2 As shown, each transmission mechanism includes two symmetrically arranged support components 4, and each support component 4 is provided with two support columns 17. Each rotating shaft 18 passes through the corresponding support column 17, and both ends of each rotating shaft 18 are rotatably engaged with the support columns 17 located on both sides thereon. The transmission roller 19 is sleeved on the outside of the rotating shaft 18 and is fixedly engaged with the rotating shaft 18. The power output end of the motor 20 is connected to the rotating shaft 18. The transmission belt 7 is wound around the two transmission rollers 19 and sleeved on the horizontal cylindrical reaction chamber 2. Two or more transmission mechanisms are provided, preferably two, such as... Figure 1 As shown, the two transmission mechanisms are located on both sides of the drive system 3.

[0038] In this embodiment, the friction between the transmission belt 7 and the horizontal cylindrical reaction chamber 2 is used to transmit power to the horizontal cylindrical reaction chamber 2. The two transmission mechanisms are located on both sides of the drive system 3, which can make the horizontal cylindrical reaction chamber 2 more stable during rotation, greatly reduce the rotation drive pressure of the drive system 3, and improve the rotation efficiency.

[0039] The head reactor hood 1 is equipped with a feed hopper 9 and an exhaust vent 10, such as Figure 3 , 4 As shown, the feed hopper 9 extends into the horizontal cylindrical reaction chamber 2. The feed hopper 9 is funnel-shaped, wider at the top and narrower at the bottom. Its smaller end is connected to a rectangular conveying trough with a certain slope. The conveying trough and feed hopper 9 are designed as an integral structure. The conveying trough extends into the interior of the horizontal cylindrical reaction chamber 2 and has a gap between it and the chamber, ensuring a non-contact fit and smooth rotation of the chamber 2. A rotating cover 14, which can only be opened towards the horizontal cylindrical reaction chamber 2, is provided at the opening of the conveying trough at the end of the feed hopper 9. The rotating cover 14 is openable and closable; its specific structure can adopt a conventional openable / closable design, which will not be detailed here. During feeding, soil is conveyed into the horizontal cylindrical reaction chamber 2 by gravity through the feed hopper 9. When feeding stops, the rotating cover 14 at the end of the conveying trough closes to prevent air from being drawn in from the feed hopper 9 without passing through the horizontal cylindrical reaction chamber 2, thus preventing short-circuiting. An external exhaust fan can be connected to the exhaust port 10. The negative pressure draws air in from the tail reactor cover 5, flows through the horizontal cylindrical reaction chamber 2, and is discharged from the exhaust port 10, thus supplying oxygen to the reaction chamber. At the same time, the volatile organic waste gas released by microbial degradation can also be extracted to the external waste gas treatment system to avoid secondary pollution.

[0040] like Figure 1As shown, the tail reactor hood 5 is equipped with a discharge hopper 11 and an air inlet pipe 13, which communicates with the horizontal cylindrical reaction chamber 2. The air inlet pipe 13 is installed on the rear side of the tail reactor hood. Based on the environmental temperature and soil moisture requirements of the microbial remediation process in the horizontal cylindrical reaction chamber 2, hot (steam) gas is introduced into the air inlet pipe 13 to heat and humidify the chamber, thereby increasing the soil temperature and moisture content and creating favorable conditions for microbial degradation of soil organic pollutants. The remediated soil is then discharged through the discharge hopper 11.

[0041] In this embodiment, the head reactor cover 1, the drive system 3, and the transmission mechanism are all mounted on the base fixed platform 8. The transmission gear 15 and the drive motor 16 of the drive system 3 are both fixed on the base fixed platform 8, and the support mechanism of the transmission mechanism is also fixed on the base fixed platform 8. A steel bracket 12 is installed at the bottom of the tail reactor cover 5 to provide stable bottom support for the entire device.

[0042] The present invention has been described in detail above through specific embodiments and examples, but these are not intended to limit the present invention. Many modifications and improvements can be made by those skilled in the art without departing from the principles of the present invention, and these should also be considered within the scope of protection of the present invention.

Claims

1. A bioremediation device for organically contaminated soil, characterized in that, The reactor includes a head reactor cover (1), a horizontal cylindrical reactor chamber (2), a drive system (3), and a tail reactor cover (5). The two ends of the horizontal cylindrical reactor chamber (2) are rotatably connected to the head reactor cover (1) and the tail reactor cover (5), respectively. The bottom height of the head reactor cover (1) is higher than the bottom height of the tail reactor cover (5) so that the horizontal cylindrical reactor chamber (2) is placed at a certain angle. The horizontal cylindrical reactor chamber (2) is driven to rotate by the drive system (3).

2. The organic polluted soil bioremediation device according to claim 1, characterized in that, The horizontal cylindrical reaction chamber (2) is placed at an inclination angle of 1~3°.

3. The organic polluted soil bioremediation device according to claim 1, characterized in that, The drive system (3) includes a large gear ring (6), a transmission gear (15), and a drive motor (16). The large gear ring (6) is fixed to the outside of the horizontal cylindrical reaction chamber (2). The transmission gear (15) meshes with the large gear ring (6). The power output end of the drive motor (16) is connected to the transmission gear (15).

4. A bioremediation device for organically contaminated soil according to any one of claims 1 to 3, characterized in that, The head reactor cover (1) is provided with a feed hopper (9) and an exhaust port (10), and the feed hopper (9) extends into the horizontal cylindrical reaction chamber (2).

5. The organic polluted soil bioremediation device according to claim 4, characterized in that, The feed hopper (9) extends to the port of the horizontal cylindrical reaction chamber (2) and is equipped with an openable rotating cover (14).

6. The organic polluted soil bioremediation device according to claim 5, characterized in that, The tail reactor cover (5) is equipped with a discharge hopper (11) and an air inlet pipe (13), which is connected to the horizontal cylindrical reaction chamber (2).

7. A bioremediation device for organically contaminated soil according to any one of claims 5 to 6, characterized in that, It also includes a transmission mechanism, which includes a support assembly (4) and a transmission belt (7). The support assembly (4) includes a support column (17), a rotating shaft (18), a transmission roller (19), and a motor (20). The rotating shaft (18) passes through the support column (17) and rotates in cooperation with the support column (17). The transmission roller (19) is sleeved on the outside of the rotating shaft (18). The power output end of the motor (20) is connected to the rotating shaft (18). The transmission belt (7) winds around the transmission roller (19) and is sleeved on the horizontal cylindrical reaction chamber (2).

8. The organic polluted soil bioremediation device according to claim 7, characterized in that, The transmission mechanism is provided in two or more, each transmission mechanism includes two or more support components (4) arranged in parallel, and each transmission belt (7) is wound around each of the parallel transmission rollers (19) and sleeved on the horizontal cylindrical reaction chamber (2).

9. The organic polluted soil bioremediation device according to claim 8, characterized in that, Multiple transmission mechanisms are arranged on both sides of the drive system.

10. A bioremediation device for organically contaminated soil according to claim 8, characterized in that, The head reactor cover (1), drive system (3), and transmission mechanism are all mounted on the base fixed platform (8), and a steel bracket (12) is installed at the bottom of the tail reactor cover (5).

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