Biological enhancement device for repairing polluted soil by using in-situ microorganisms

Abstract

The utility model discloses a bioaugmentation device utilizing in-situ microorganisms to repair contaminated soil, and particularly relates to the technical field of microorganism treatment equipment, the bioaugmentation device comprises a base, two supporting side plates are symmetrically and fixedly connected to the upper end face of the base, a bearing plate is fixedly connected between the two supporting side plates, and the bearing plate is fixedly connected to the lower end face of the base. The upper end face of the bearing plate is connected with a strengthening box, the strengthening box is provided with a stirring type stirring structure, the stirring type stirring structure comprises a stirring assembly and a stirring assembly, and the stirring assembly comprises a fixing cover fixedly connected to the upper end face of the strengthening box. The stirring type stirring structure is arranged, so that gathering of waste materials can be broken, the situation of uneven mixing is avoided, the waste materials and microbial preparations can be stirred up and down while rotating stirring is conducted, flowing of the waste materials and the microbial preparations in the strengthening box is promoted, the materials can be fully mixed, and the mixing efficiency is improved. The mixing uniformity is ensured, and the quality of the biological strength of the material is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of microbial treatment equipment, and particularly relates to a bioaugmentation device for in-situ microbial remediation of contaminated soil. Background Technique

[0002] In-situ bioremediation is a process of improving the degradation of organic pollutants in soil and rivers by indigenous microorganisms or exogenous microorganisms in the soil through the addition of microbial reagents, nutrients, and soil conditioners without changing the positions of the soil and rivers. Under this background, a set of highly efficient, environmentally friendly, and organically resourceful natural purification treatment system is introduced for bioaugmentation, minimizing the odor generation of high-concentration organic substances such as livestock and poultry breeding waste, food waste, slaughter by-products, and sewage sludge, while realizing the resource utilization of high-quality natural liquid fertilizer and compost, and enabling harmless treatment through bioaugmentation without discharging.

[0003] In the patent application No. 202321025039.X, a bioaugmentation device for in-situ microbial remediation of contaminated soil is disclosed. "An air delivery pipe is installed inside the bottom of the bioaugmentation bin, one end of the air delivery pipe is connected to the output end of an air pump, and several air jet nozzles are arranged on the top surface of the air delivery pipe. The air pump is used to spray gas from the paint spraying nozzles to accelerate the flow of the liquid inside the bioaugmentation bin, thereby further promoting the mixing of materials." In the above, the air pump is used in combination with the air delivery pipe and the air jet nozzles to spray gas into the augmentation bin to achieve liquid flow. However, the air jet nozzles are arranged inside the augmentation bin. When the materials are mixed and reacted, the materials naturally fall to the bottom of the augmentation bin based on gravity, and the materials are likely to enter the air jet nozzles, causing the materials to block the air jet nozzles, resulting in the gas being unable to pass smoothly, and the effect of promoting the liquid material flow by jetting gas is poor, affecting the quality after bioaugmentation. Content of the Utility Model

[0004] The purpose of the utility model is to provide a bioaugmentation device for in-situ microbial remediation of contaminated soil to solve the above deficiencies in the technology.

[0005] To achieve the above object, the utility model provides the following technical solution: A bioaugmentation device for in-situ microbial remediation of contaminated soil, including a base, on the upper end face of the base, two support side plates are symmetrically and fixedly connected, between the two support side plates, a bearing plate is fixedly connected, on the upper end face of the bearing plate, a strengthening box is connected, on one side of the outer wall of the strengthening box, an exhaust pipe with a switch valve is connected, and the gas generated by the mixing reaction in the strengthening box can be discharged from the exhaust pipe. On one side of the outer wall of the storage box, a discharge pipe with a switch valve is connected. On the other side of the outer wall of the strengthening box, a feed hopper and a extraction pipe are connected. The extraction pipe is arranged on one side of the feed hopper. The lower end of the strengthening box is connected with a liquid discharge pipe. On the upper end face of the base, a storage box is arranged, and the outlet end of the liquid discharge pipe penetrates into the interior of the storage box.

[0006] Specifically, during use, first, some waste materials such as livestock manure and biogas residues that need to be strengthened are poured into the strengthening box through the feed hopper, and then the microbial agent is poured into the strengthening box through the feed hopper. The waste materials and the microbial agent carry out a degradation reaction in the strengthening box to achieve the bioaugmentation of the waste. After strengthening, the switch valve on the liquid discharge pipe is opened, and the liquid discharge pipe is opened. The strengthened material is fed into the storage box through the liquid discharge pipe for storage. In addition, during the reaction process, a sampling tool can be inserted into the extraction pipe, and its sampling end enters the strengthening box through the extraction pipe to take out some materials for facilitating the monitoring of the degree of bioaugmentation.

[0007] Preferably, a stirring type stirring structure is arranged on the strengthening box. The stirring type stirring structure includes a stirring component and a stirring component. The stirring component includes a fixed cover fixedly connected to the upper end face of the strengthening box. Inside the fixed cover, a positive and negative motor is arranged. The output end of the positive and negative motor is connected with a threaded rod. The lower end face of the threaded rod is connected with a connecting block. Inside the strengthening box at the lower end face of the connecting block, a rotating rod is connected. On the outer wall of the rotating rod, stirring blades are fixedly connected. The connecting block is composed of two discs and a short vertical rod. The short vertical rod is connected between the two discs. The upper disc is connected with the threaded rod, and the lower disc is connected with the rotating rod. One end of the short vertical rod far away from the upper disc penetrates and extends into the interior of the strengthening box;

[0008] Preferably, the stirring component includes a movable plate threadedly connected to the outside of the threaded rod. On the outer wall of the movable plate, two connecting frames are symmetrically connected. On the side of the connecting frame far away from the movable plate, a cross plate is connected. Inside the strengthening box, a connecting rod is arranged. The lower end face of the connecting rod is connected with an annular block, and one end of the connecting rod far away from the annular block penetrates the strengthening box and is connected with the cross plate.

[0009] Through the above technical solution:

[0010] During use, the forward and reverse motor drives the threaded rod, the connecting block and the rotating rod to rotate forward and backward, driving the stirring blades to rotate, and mixing and stirring the waste materials and the microbial preparation. The stirring blades rotate forward and backward, which helps to break the aggregation between the waste materials, avoid uneven mixing, improve the mixing efficiency. At the same time of rotation, the movable plate is in threaded cooperation with the threaded rod, driving the movable plate to lift outside the threaded rod, so that the ring block connected through the connecting frame, the cross plate and the connecting rod lifts in the strengthening box, which can stir the waste materials and the microbial preparation up and down while stirring and mixing, promote the flow of the waste materials and the microbial preparation in the strengthening box, enable the materials to be fully mixed, ensure the uniformity of mixing, and guarantee the quality of the materials after biological strength.

[0011] Preferably, a slider is connected to the outer side wall of the cross plate, and a chute adapted to the slider is provided on the inner side wall of the fixed cover.

[0012] Specifically, when the cross plate moves up and down, the slider slides in the chute, which enhances the stability of the cross plate during movement and ensures the stirring effect on the waste materials and the microbial preparation.

[0013] Preferably, a blocking structure is provided on the stirring type stirring structure. The blocking structure includes a fixed block fixedly connected to the lower end surface of the rotating rod, and a hollow plate is fixedly connected to the outer surface wall of the fixed block.

[0014] Preferably, a plug is fixedly connected to the lower end surface of the fixed block, and an electric telescopic rod is installed on the fixed cover. The free end of the electric telescopic rod is connected to the top of the outer cover of the forward and reverse motor.

[0015] Through the above technical solutions:

[0016] Before pouring the materials, first extend the electric telescopic rod to drive the stirring type stirring structure to descend, and the fixed block will descend accordingly until it contacts the inner wall of the strengthening box. At this time, the fixed block is placed at the upper end of the liquid outlet pipe, and the plug block is inserted into the inlet end of the liquid outlet pipe, which can play a sealing effect during the mixing and stirring process, avoiding the situation where some waste materials and microbial agents enter the liquid outlet pipe and cause the inability to obtain a mixing reaction, and also avoiding the drawback that larger waste materials block the liquid outlet pipe and cause the inability to discharge the materials after the reaction, thus eliminating the need for dredging the liquid outlet pipe. Moreover, after mixing, contract the electric telescopic rod to drive the stirring type stirring structure to rise, and the plug block moves out of the liquid outlet pipe, then the liquid outlet pipe can be opened. In addition, the fixed block rotates with the rotating rod, so that the hollow plate rotates to stir the waste materials at the bottom of the inner part of the strengthening box, avoiding the situation where the waste materials accumulate at the bottom of the strengthening box and cause poor mixing effect, and improving the stirring effect.

[0017] Preferably, two limiting blocks are symmetrically connected to the outer surface of the outer cover of the forward and reverse motor, and limiting grooves adapted to the limiting blocks are provided on the inner surface of the fixed cover.

[0018] Specifically, when the electric telescopic rod drives the stirring type stirring structure to move up and down, the limiting blocks move in the limiting grooves, which can play a limiting role, making the stirring type stirring structure move up and down in a straight line, enabling it to accurately complete the sealing of the liquid outlet pipe. In addition, it also enhances the stability of the up and down movement of the stirring type stirring structure.

[0019] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0020] 1. By setting the stirring type stirring structure, the device is equipped with the function of stirring the waste materials and microbial agents in a stirring manner. The stirring components rotate in both forward and reverse directions, which can help break the aggregation between the waste materials, avoid the situation of uneven mixing, improve the mixing efficiency, and at the same time, during the rotation and stirring, it can stir the waste materials and microbial agents up and down, promote the flow of the waste materials and microbial agents in the strengthening box, and the materials can be fully mixed, ensuring the uniformity of the mixing and guaranteeing the quality of the materials after the biological strength.

[0021] 2. By setting up a plugging structure, the stirring - type mixing structure is enabled to plug the liquid outlet pipe, capable of plugging during the mixing and stirring process, avoiding the situation where some waste materials and microbial agents enter the liquid outlet pipe, resulting in the inability to obtain the mixing reaction, ensuring that the waste materials can be fully degraded, preventing the quality of the mixed materials from not meeting the standards, not affecting the fertilization effect, and also avoiding the drawback that larger waste materials block the liquid outlet pipe, causing the materials after the reaction to be unable to be discharged. It can save the operation of dredging the discharge pipe and improve the practicability of the device. Brief Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0023] Figure 1 Overall structure schematic diagram of the present utility model;

[0024] Figure 2 Cross - sectional view of the present utility model;

[0025] Figure 3 Cross - sectional view of the strengthening box of the present utility model;

[0026] Figure 4 For Figure 3 Enlarged schematic view of part A;

[0027] Figure 5 Connection schematic diagram of the mixing component and the plugging structure of the present utility model;

[0028] Figure 6 Schematic diagram of opening the liquid outlet pipe of the present utility model;

[0029] Figure 7 Schematic diagram of the plugging structure of the present utility model.

[0030] Explanation of the reference numerals in the drawings:

[0031] 1. Base; 2. Support side plate; 3. Bearing plate; 4. Strengthening box; 5. Stirring - type mixing structure; 51. Fixed cover; 52. Reversible motor; 53. Threaded rod; 54. Connecting block; 55. Rotating rod; 56. Stirring blade; 511. Movable plate; 512. Connecting frame; 513. Horizontal plate; 514. Connecting rod; 515. Ring block; 516. Chute; 517. Slide block; 6. Liquid outlet pipe; 7. Storage tank; 8. Plugging structure; 81. Fixed block; 82. Hollow plate; 83. Insert block; 84. Electric telescopic rod; 85. Limiting block; 86. Limiting groove; 9. Exhaust pipe; 10. Discharge pipe; 11. Feed hopper; 12. Extraction pipe. Detailed implementation mode

[0032] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further introduced in detail below in conjunction with the accompanying drawings.

[0033] The present utility model provides a bioaugmentation device for in-situ microbial remediation of contaminated soil as shown in Figure 1 and Figure 2 and includes:

[0034] A base 1, two support side plates 2 are symmetrically and fixedly connected to the upper end face of the base 1, a bearing plate 3 is fixedly connected between the two support side plates 2, a strengthening box 4 is connected to the upper end face of the bearing plate 3, an exhaust pipe 9 with a switch valve is connected to one side of the outer wall of the strengthening box 4, and the gas generated by the mixing reaction in the strengthening box 4 can be discharged from the exhaust pipe 9. A discharge pipe 10 with a switch valve is connected to one side of the outer wall of the storage tank 7. A feed hopper 11 and a suction pipe 12 are connected to the other side of the outer wall of the strengthening box 4. The suction pipe 12 is arranged on one side of the feed hopper 11. A liquid outlet pipe 6 is connected to the lower end of the strengthening box 4. A storage tank 7 is arranged on the upper end face of the base 1. The outlet end of the liquid outlet pipe 6 penetrates into the interior of the storage tank 7.

[0035] Specifically, during use, first, some waste materials such as livestock manure and biogas residues that need to be strengthened are poured into the strengthening box 4 through the feed hopper 11, and then the microbial agent is poured into the strengthening box 4 through the feed hopper 11. The waste materials and the microbial agent carry out a degradation reaction in the strengthening box 4 to achieve the bioaugmentation of the waste. After strengthening, the switch valve on the liquid outlet pipe 6 is opened, and the liquid outlet pipe 6 is opened. The strengthened material is fed into the storage tank 7 through the liquid outlet pipe 6 for storage. In addition, during the reaction process, a sampling tool can be inserted into the suction pipe 12, and its sampling end enters the strengthening box 4 through the suction pipe 12 to take out part of the material for monitoring the degree of bioaugmentation.

[0036] The present utility model provides a bioaugmentation device for in-situ microbial remediation of contaminated soil as shown in Figure 2 and Figure 3A bioaugmentation device for in-situ microbial remediation of contaminated soil as shown, a stirring type mixing structure 5 is provided on the strengthening box 4. The stirring type mixing structure 5 includes a mixing component and a stirring component. The mixing component includes a fixed cover 51 fixedly connected to the upper end surface of the strengthening box 4. A reversible motor 52 is provided inside the fixed cover 51. The output end of the reversible motor 52 is connected to a threaded rod 53. The lower end surface of the threaded rod 53 is connected to a connecting block 54. The lower end surface of the connecting block 54 and inside the strengthening box 4 is connected to a rotating rod 55. Stirring blades 56 are fixedly connected to the outer surface wall of the rotating rod 55. The connecting block 54 is composed of two discs and a short vertical rod. The short vertical rod is connected between the two discs. The upper disc is connected to the threaded rod 53, and the lower disc is connected to the rotating rod 55. One end of the short vertical rod away from the upper disc penetrates and extends into the strengthening box 4.

[0037] The stirring component includes a movable plate 511 threadedly connected to the outside of the threaded rod 53. Two connecting frames 512 are symmetrically connected to the outer surface wall of the movable plate 511. A cross plate 513 is connected to one side of the connecting frame 512 away from the movable plate 511. A connecting rod 514 is provided inside the strengthening box 4. The lower end surface of the connecting rod 514 is connected to an annular block 515, and one end of the connecting rod 514 away from the annular block 515 penetrates the strengthening box 4 and is connected to the cross plate 513.

[0038] Through the above technical solutions:

[0039] When in use, the reversible motor 52 drives the threaded rod 53, the connecting block 54 and the rotating rod 55 to rotate forward and backward, driving the stirring blades 56 to rotate, mixing and stirring the waste materials and the microbial preparation. The stirring blades 56 rotate forward and backward, which helps to break the aggregation between the waste materials, avoid the situation of uneven mixing, improve the mixing efficiency. And during rotation, the movable plate 511 is in threaded cooperation with the threaded rod 53, driving the movable plate 511 to lift on the outside of the threaded rod 53, so that the annular block 515 connected through the connecting frame 512, the cross plate 513 and the connecting rod 514 lifts in the strengthening box 4, which can stir the waste materials and the microbial preparation up and down while mixing and stirring, promote the flow of the waste materials and the microbial preparation in the strengthening box 4, make the materials fully mixed, ensure the uniformity of mixing, and guarantee the quality after the biological strength of the materials.

[0040] Furthermore, referring to Figure 2 and Figure 4 as shown, a slider 517 is connected to the outer side wall of the cross plate 513, and a chute 516 adapted to the slider 517 is opened on the inner side wall of the fixed cover 51.

[0041] Specifically, when the cross plate 513 moves up and down, the slider 517 slides in the chute 516, which can enhance the stability of the cross plate 513 during movement and ensure the stirring effect on the waste materials and the microbial preparation.

[0042] The utility model provides Figures 5 - 7 A bioaugmentation device for remediating contaminated soil using in-situ microorganisms is shown, and a sealing structure 8 is provided on the stirring structure 5. The sealing structure 8 includes a fixed block 81 fixedly connected to the lower end surface of the rotating rod 55, and the outer wall of the fixed block 81 is fixedly connected to a hollow plate 82.

[0043] The lower end surface of the fixed block 81 is fixedly connected with an insert block 83 , and an electric telescopic rod 84 is installed on the fixed cover 51 . The free end of the electric telescopic rod 84 is connected to the top of the outer cover outside the forward and reverse motor 52 .

[0044] Through the above technical solution:

[0045] Before pouring the material, the electric telescopic rod 84 is first extended to drive the stirring structure 5 to descend, and the fixed block 81 is then lowered until it contacts the inner surface wall of the strengthening box 4. At this time, the fixed block 81 is placed on the upper end of the liquid outlet pipe 6, and the plug block 83 is inserted into the inlet end of the liquid outlet pipe 6, which can play a blocking effect during mixing and stirring, avoiding the situation where some waste materials and microbial preparations enter the liquid outlet pipe 6 and the mixing reaction cannot be obtained, and also avoiding the problem that large waste materials block the liquid outlet pipe 6 and the reacted materials cannot be discharged, thereby eliminating the need to clear the liquid outlet pipe 6. Moreover, after mixing, the electric telescopic rod 84 is contracted to drive the stirring structure 5 to rise, and the plug block 83 is moved out of the liquid outlet pipe 6 to open the liquid outlet pipe 6. In addition, the fixed block 81 rotates with the rotation of the rotating rod 55, so that the hollow plate 82 thereof stirs the waste materials at the bottom of the strengthening box 4 as it rotates, avoiding the situation where the waste materials are deposited at the bottom of the strengthening box 4 and the mixing effect is poor, thereby improving the stirring effect.

[0046] Further, see Figure 2 As shown, the outer wall of the outer cover of the forward and reverse motor 52 is symmetrically connected to two limit blocks 85 , and the inner wall of the fixed cover 51 is provided with a limit groove 86 matched with the limit blocks 85 .

[0047] Specifically, when the electric telescopic rod 84 drives the stirring stirring structure 5 to rise and fall, the limit block 85 moves in the limit groove 86, which can play a limiting role, so that the stirring stirring structure 5 can rise and fall in a straight line, so that it can accurately complete the blocking of the liquid outlet pipe 6. In addition, it also enhances the stability of the lifting and lowering of the stirring stirring structure 5.

[0048] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A bioaugmentation device for in-situ microbial remediation of contaminated soil, characterized in that, Including: A base (1), on the upper end face of the base (1), two support side plates (2) are symmetrically and fixedly connected. A bearing plate (3) is fixedly connected between the two support side plates (2). On the upper end face of the bearing plate (3), a strengthening box (4) is connected. A stirring type stirring structure (5) is provided on the strengthening box (4). A blocking structure (8) is provided on the stirring type stirring structure (5). The stirring type stirring structure (5) includes a stirring component and a stirring component. The stirring component includes a fixed cover (51) fixedly connected to the upper end face of the strengthening box (4). Inside the fixed cover (51), a forward and reverse motor (52) is provided. The output end of the forward and reverse motor (52) is connected to a threaded rod (53). The lower end face of the threaded rod (53) is connected to a connecting block (54). The lower end face of the connecting block (54) and inside the strengthening box (4) is connected to a rotating rod (55). On the outer surface of the rotating rod (55), stirring blades (56) are fixedly connected. The stirring component includes a movable plate (511) threadedly connected to the outside of the threaded rod (53). On the outer surface of the movable plate (511), two connecting frames (512) are symmetrically connected. On the side of the connecting frame (512) away from the movable plate (511), a cross plate (513) is connected. Inside the strengthening box (4), a connecting rod (514) is provided. The lower end face of the connecting rod (514) is connected to an annular block (515). And the end of the connecting rod (514) away from the annular block (515) penetrates through the strengthening box (4) and is connected to the cross plate (513).

2. The bioaugmentation device for in-situ microbial remediation of contaminated soil according to claim 1, characterized in that: On the outer side wall of the cross plate (513), a slider (517) is connected. On the inner side wall of the fixed cover (51), a chute (516) adapted to the slider (517) is provided.

3. A bioaugmentation device for in-situ microbial remediation of contaminated soil according to claim 1, characterized in that: The lower end of the strengthening box (4) is connected to a liquid outlet pipe (6). On the upper end face of the base (1), a storage box (7) is provided. The outlet end of the liquid outlet pipe (6) penetrates into the inside of the storage box (7).

4. The bioaugmentation device for in-situ microbial remediation of contaminated soil according to claim 1, wherein: The blocking structure (8) includes a fixed block (81) fixedly connected to the lower end face of the rotating rod (55). On the outer surface of the fixed block (81), a hollow plate (82) is fixedly connected.

5. A bioaugmentation device for in-situ microbial remediation of contaminated soil according to claim 4, characterized in that: The lower end face of the fixed block (81) is rotatably connected to a plug (83) used in cooperation with the liquid outlet pipe (6). An electric telescopic rod (84) is installed on the fixed cover (51). The free end of the electric telescopic rod (84) is connected to the top of the outer cover of the forward and reverse motor (52).

6. The bioaugmentation device for in-situ microbial remediation of contaminated soil according to claim 5, characterized in that: On the outer surface of the outer cover of the forward and reverse motor (52), two limit blocks (85) are symmetrically connected. On the inner surface of the fixed cover (51), a limit groove (86) adapted to the limit blocks (85) is provided.

7. A bioaugmentation device for in-situ microbial remediation of contaminated soil according to claim 3, characterized in that: On one side of the outer surface of the strengthening box (4), an exhaust pipe (9) with a switch valve is connected. On one side of the outer surface of the storage box (7), a discharge pipe (10) with a switch valve is connected.

8. A bioaugmentation device for in-situ microbial remediation of contaminated soil according to claim 1, characterized in that: On the other side of the outer surface of the strengthening box (4), a feed hopper (11) and a suction pipe (12) are connected. The suction pipe (12) is provided on one side of the feed hopper (11).

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