Underground water microorganism in-situ remediation device

Abstract

The utility model discloses an underground water microorganism in-situ remediation device which comprises an injection well, the injection well is fixedly connected with a pumping well through a horizontal well, the interior of the pumping well and the interior of the injection well are communicated with the interior of the horizontal well, and an acceleration assembly is fixed in the horizontal well. The acceleration assembly comprises fixing blocks symmetrically arranged in the horizontal well, a rotating shaft rod is rotationally connected between the fixing blocks, a spiral blade is fixedly connected to the outer surface of the rotating shaft rod, and first stirring rods are welded to the end, away from the spiral blade, of the outer surface of the rotating shaft rod at equal intervals; a driving assembly is arranged at the end, away from the first stirring rod, of the rotating shaft rod, the driving assembly enables the rotating shaft rod to rotate in the horizontal well, the rotating shaft rod rotates to enable the spiral blades to rotate along with the rotating shaft rod, the spiral blades rotate to enable the mixed solution to rapidly penetrate through the horizontal well and flow into the pumping well, and then the carbon source diffusion range is widened; the groundwater remediation efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to an in-situ repair technology, in particular to a groundwater microbial in-situ repair device. Background Art

[0002] There are two types of contaminated groundwater remediation technologies: ex situ remediation and in situ remediation. Ex situ remediation technology, also known as extraction and treatment technology, is a technology that pumps contaminated groundwater to the surface for treatment; ex situ remediation technology mainly includes physical, chemical and biological treatment methods, which have the advantages of large processing volume and high processing efficiency in a short period of time, but the cost is relatively high. In situ remediation technology is a treatment technology that omits the extraction process under conditions of human intervention and remediates contaminated groundwater in situ. Common ones include groundwater aeration, in situ heat treatment technology, in situ chemical oxidation and permeable reaction wall remediation technology.

[0003] In addition, in terms of the selection of remediation media, it has gradually developed from chemical denitrification to biological denitrification and denitrification. The carbon sources mainly include solid carbon sources such as cotton, wood chips, and wheat straw, and liquid carbon sources such as ethanol, methanol, acetic acid, and glucose. At present, the carbon source can only flow to the pumping well through a horizontal well. The diffusion range of the carbon source can be effectively controlled by the surrounding water pressure. However, the range of the carbon source diffusion through flow greatly affects the efficiency of groundwater remediation. Utility Model Content

[0004] In view of the problems in the related technology, the utility model proposes a groundwater microbial in-situ remediation device to overcome the above-mentioned technical problems existing in the existing related technology.

[0005] To this end, the specific technical solutions adopted by the utility model are as follows:

[0006] A groundwater microbial in-situ remediation device comprises an injection well, wherein a peristaltic pump is fixedly provided inside the injection well, a horizontal well is fixedly provided on the bottom end of the outer surface of the injection well, a pumping well is fixedly provided on the end of the horizontal well away from the injection well, a pumping pump is fixedly provided inside the pumping well, the interior of the pumping well and the interior of the injection well are interconnected with the interior of the horizontal well, an acceleration assembly is fixed inside the horizontal well, the acceleration assembly comprises fixed blocks symmetrically arranged inside the horizontal well, a filter is provided at the end of the horizontal well away from the fixed blocks, a rotating shaft is rotatably connected between the fixed blocks, a spiral blade is fixedly connected to the outer surface of the rotating shaft, a first stirring rod is equidistantly welded to the end of the outer surface of the rotating shaft away from the spiral blade, a fixing piece is fixedly connected to the end of the rotating shaft away from the first stirring rod, and a driving assembly is provided at the end of the rotating shaft away from the fixing piece.

[0007] Furthermore, in order to rotate the rotating shaft, the driving assembly includes a bevel gear 1 welded on the rotating shaft, a sleeve is welded on the top of the horizontal well, the sleeve is communicated with the interior of the horizontal well, the interior of the sleeve is rotatably connected with a driving shaft, the bottom end of the driving shaft extends to the interior of the horizontal well and is fixedly connected to bevel gear 2, the bevel gear 2 is meshed with bevel gear 1, and the top end of the driving shaft extends outside the sleeve and is connected to the output end of the driving motor.

[0008] Furthermore, in order to facilitate the preparation of the carbon source, a fixed support plate is fixedly connected to one end of the outer surface of the injection well, a stirring box is fixedly connected to the fixed support plate, the stirring box is connected to the injection well through a circulation pipe, a stirring shaft is rotatably connected inside the stirring box, stirring blades are welded on the stirring shaft at equal distances, the bottom end of the stirring shaft passes through the fixed support plate, and is connected to the output end of the stirring motor.

[0009] Furthermore, in order to allow the denitrifying bacteria grown on the fine sand to fully react with the nitrate-contaminated groundwater, a first gear is provided inside the fixing member, the first gear is fixedly connected to the rotating shaft, the fixing member is rotatably connected to rotating rods at both ends away from the rotating shaft, a second gear is fixedly connected to the rotating rod, the second gear is meshed with the first gear, one end of the rotating rod extends outside the fixing member and is connected to a support member, the support member is fixedly connected to the rotating shaft, second stirring rods are welded at equal distances on the outer surface of the rotating rod, and the second stirring rods are staggered with the first stirring rods.

[0010] Furthermore, in order to place fine sand in the horizontal well, a sand inlet pipe is fixedly connected to one end of the top of the horizontal well away from the sleeve, and the sand inlet pipe is communicated with the interior of the horizontal well.

[0011] Furthermore, in order to carry out in-situ repair of groundwater in the horizontal well, a partition plate is provided between the spiral blade and the first stirring rod, the rotating shaft rod passes through the partition plate and can rotate on the partition plate, the partition plate is fixedly connected to the inside of the horizontal well, the partition plate divides the inside of the horizontal well into a water diversion chamber and a repair chamber, and water diversion holes are opened at equal distances on the inner surface of the water diversion chamber, and the water diversion holes extend to the outside of the horizontal well.

[0012] Furthermore, in order to allow groundwater to pass through the partition plate, through holes are provided at equal intervals on the partition plate.

[0013] Furthermore, in order to precipitate sand and gravel in the groundwater, a sedimentation well is fixedly provided at the bottom end of the pumping well.

[0014] The beneficial effects of the utility model are:

[0015] 1. The driving motor works, and the driving motor drives the driving shaft to rotate in the sleeve, and the bevel gear 2 rotates accordingly. The bevel gear 2 is meshed with the bevel gear 1, so that the rotating shaft rotates in the horizontal well. The rotation of the rotating shaft causes the spiral blade to rotate accordingly. The rotation of the spiral blade causes the mixed solution to quickly pass through the horizontal well and flow into the pumping well, thereby increasing the diffusion range of the carbon source and greatly improving the efficiency of groundwater remediation.

[0016] 2. Fine sand is injected into the repair chamber through the sand inlet pipe, and groundwater contaminated by nitrate enters the water diversion chamber through the water diversion hole. Groundwater contaminated by nitrate in the water diversion chamber flows into the repair chamber through the through hole. The rotation of the rotating shaft causes the first stirring rod and the fixed part to rotate synchronously, and the first gear rotates accordingly. The first gear is meshed with the second gear to make the rotating rod rotate in the repair chamber. The rotation of the rotating rod causes the second stirring rod to rotate synchronously and cooperate with the first stirring rod on the rotating shaft, so that the denitrifying bacteria grown on the fine sand fully react with the groundwater contaminated by nitrate, and denitrify the nitrate into nitrogen, so that the contaminated groundwater is purified, thereby effectively improving the water quality, which is beneficial to the repair of groundwater contaminated by nitrate.

[0017] 3. By injecting liquid carbon source (such as ethanol, glucose and other non-toxic and environmentally friendly liquid carbon sources) into the mixing box, and adding an appropriate amount of water into the mixing box, the stirring motor is running, the stirring motor drives the stirring shaft to rotate, and the stirring blades rotate accordingly. The rotation of the stirring blades makes the liquid carbon source and water fully combine, so that the mixed solution in the mixing box reaches a concentration suitable for microbial growth, further improving the efficiency of groundwater remediation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of a groundwater microbial in-situ remediation device according to an embodiment of the utility model;

[0020] Figure 2 It is a cross-sectional view of a groundwater microbial in-situ remediation device according to an embodiment of the utility model;

[0021] Figure 3 It is a cross-sectional view of a stirring box in a groundwater microbial in-situ remediation device according to an embodiment of the utility model;

[0022] Figure 4 It is a cross-sectional view of a horizontal well in a groundwater microbial in-situ remediation device according to an embodiment of the utility model;

[0023] Figure 5 It is a cross-sectional view of a fixing part in a groundwater microbial in-situ remediation device according to an embodiment of the utility model.

[0024] In the figure:

[0025] 1. Injection well; 2. Peristaltic pump; 3. Horizontal well; 4. Partition plate; 5. Water diversion chamber; 6. Water diversion hole; 7. Through hole; 8. Repair chamber; 9. Sand inlet pipe; 10. Fixed block; 11. Rotating shaft; 12. Spiral blade; 13. First stirring rod; 14. Bevel gear one; 15. Bevel gear two; 16. Driving shaft; 17. Driving motor; 18. Sleeve; 19. Filter; 20. Pumping well; 21. Sedimentation well; 22. Pumping pump; 23. Fixed support plate; 24. Mixing box; 25. Mixing motor; 26. Mixing shaft; 27. Mixing blade; 28. Circulation pipe; 29. ​​Fixed piece; 30. First gear; 31. Rotating rod; 32. Second gear; 33. Second stirring rod; 34. Support piece. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] According to an embodiment of the utility model, a groundwater microbial in-situ remediation device is provided.

[0028] Embodiment 1;

[0029] like Figure 1-Figure 4As shown, according to the groundwater microbial in-situ remediation device of the embodiment of the utility model, it includes an injection well 1 for the flow of carbon source, a fixed support plate 23 is fixedly connected to one end of the outer surface of the injection well 1, a stirring box 24 is fixedly connected to the fixed support plate 23, the stirring box 24 is connected to the injection well 1 through a circulation pipe 28, a valve is fixedly connected to the circulation pipe 28, a stirring shaft 26 is rotatably connected inside the stirring box 24, stirring blades 27 are welded on the stirring shaft 26 at equal distances, the bottom end of the stirring shaft 26 passes through the fixed support plate 23, and is connected to the output end of the stirring motor 25, the stirring motor 25 is fixedly installed on the fixed support plate 23, by injecting a liquid carbon source (such as ethanol, glucose and other non-toxic and environmentally friendly liquid carbon sources) into the stirring box 24, and stirring the stirring motor 25 to the stirring box 24. A proper amount of water is added into the stirring box 24, and the stirring motor 25 is running. The stirring motor 25 drives the stirring shaft 26 to rotate, and the stirring blade 27 rotates accordingly. The rotation of the stirring blade 27 makes the liquid carbon source and water fully combine, so that the mixed solution in the stirring box 24 reaches a concentration suitable for the growth of microorganisms, and further improves the efficiency of groundwater remediation. A peristaltic pump 2 is fixedly arranged inside the injection well 1, and a horizontal well 3 for repairing groundwater is fixedly arranged on the bottom end of the outer surface of the injection well 1. A pumping well 20 for storing repaired groundwater is fixedly arranged at one end of the horizontal well 3 away from the injection well 1. A pumping pump 22 is fixedly arranged inside the pumping well 20. The pumping pump 22 is set to move the repaired groundwater out of the pumping well 20. A sinker is fixedly arranged on the bottom end of the pumping well 20. Sand well 21. The setting of sand well 21 is convenient for settling sand and gravel. On the one hand, it is convenient for improving water quality. On the other hand, it can prevent sand and gravel from clogging water pump 22. The distance between the wellhead of sand well 21 and the ground is greater than the distance between the bottom of horizontal well 3 and the ground. The inside of pumping well 20 and the inside of injection well 1 are interconnected with the inside of horizontal well 3. An acceleration component is fixed inside horizontal well 3. The acceleration component includes a fixed block 10 symmetrically arranged inside horizontal well 3. A filter screen 19 is arranged at one end of the horizontal well 3 away from the fixed block 10. The setting of filter screen 19 effectively prevents fine sand in horizontal well 3 from entering injection well 1 and pumping well 20. A rotating shaft 11 is rotatably connected between the fixed blocks 10 through bearings. A spiral blade 12 is fixedly connected to the outer surface of the rotating shaft 11. A first stirring rod 13 is welded equidistantly on the outer surface of the shaft 11 at one end away from the spiral blade 12, a fixing piece 29 is fixedly connected to one end of the rotating shaft 11 away from the first stirring rod 13, a driving assembly is provided at one end of the rotating shaft 11 away from the fixing piece 29, and the driving assembly includes a bevel gear 14 welded to the rotating shaft 11, a sleeve 18 is welded to the top of the horizontal well 3, the sleeve 18 is communicated with the inside of the horizontal well 3, the inside of the sleeve 18 is rotatably connected with a driving shaft 16 through a bearing, the bottom end of the driving shaft 16 extends to the inside of the horizontal well 3 and is fixedly connected to a bevel gear 2 15, the bevel gear 2 15 is meshed with the bevel gear 1 14, the top end of the driving shaft 16 extends to the outside of the sleeve 18 and is connected to the output end of the driving motor 17,The driving motor 17 is fixedly mounted on the sleeve 18. In order to place fine sand in the horizontal well 3, a sand inlet pipe 9 is fixedly connected to the top of the horizontal well 3 away from the sleeve 18. The sand inlet pipe 9 is interconnected with the inside of the horizontal well 3. When the driving motor 17 works, the driving motor 17 drives the driving shaft 16 to rotate in the sleeve 18, and the bevel gear 2 15 rotates accordingly. The bevel gear 2 15 is meshed with the bevel gear 1 14, so that the rotating shaft 11 rotates in the horizontal well 3. The rotation of the rotating shaft 11 causes the spiral blade 12 to rotate accordingly. The rotation of the spiral blade 12 causes the mixed solution to quickly pass through the horizontal well 3 and flow into the pumping well 20, thereby increasing the diffusion range of the carbon source and greatly improving the efficiency of groundwater remediation.

[0030] Embodiment 2:

[0031] See also Figure 1 , Figure 2 , Figure 4 and Figure 5In order to make the denitrifying bacteria grown on the fine sand fully react with the groundwater contaminated by nitrate, a first gear 30 is provided inside the fixing member 29, and the first gear 30 is fixedly connected to the rotating shaft 11. The fixing member 29 is rotatably connected to the two ends of the rotating shaft 11, and the rotating rod 31 is fixedly connected to the rotating rod 31. The second gear 32 is meshed with the first gear 30. One end of the rotating rod 31 extends outside the fixing member 29 and is connected to the support member 34. The support member 34 is fixedly connected to the rotating shaft 11. The rotating rod 31 1 is welded with second stirring rods 33 at equal distances on the outer surface, and the second stirring rods 33 are staggered with the first stirring rods 13. In order to make the groundwater contaminated by nitrates be repaired in situ in the horizontal well 3, a partition plate 4 is provided between the spiral blades 12 and the first stirring rods 13, and the rotating shaft 11 passes through the partition plate 4 and can rotate on the partition plate 4. The partition plate 4 is fixedly connected to the inside of the horizontal well 3, and the partition plate 4 divides the inside of the horizontal well 3 into a water diversion chamber 5 and a repair chamber 8. Water diversion holes 6 are opened at equal distances on the inner surface of the water diversion chamber 5, and the water diversion holes 6 extend to the horizontal well 3. 3, the groundwater polluted by nitrate enters the water diversion chamber 5 through the water diversion hole 6. In order to allow the groundwater polluted by nitrate to pass through the partition plate 4, the partition plate 4 is provided with through holes 7 at equal intervals. The through holes 7 are arranged to prevent fine sand from flowing into the water diversion chamber 5. Fine sand is injected into the repair chamber 8 through the sand inlet pipe 9. Denitrifying bacteria will grow on the fine sand. The groundwater polluted by nitrate enters the water diversion chamber 5 through the water diversion hole 6. The groundwater polluted by nitrate in the water diversion chamber 5 flows into the repair chamber 8 through the through holes 7. The rotation of the rotating shaft 11 causes the first stirring rod 13 and the solid The fixed member 29 rotates synchronously, and causes the first gear 30 to rotate accordingly. The first gear 30 is meshed with the second gear 32, so that the rotating rod 31 rotates in the repair chamber 8. The rotation of the rotating rod 31 causes the second stirring rod 33 to rotate synchronously, and cooperates with the first stirring rod 13 on the rotating shaft 11, so that the denitrifying bacteria grown on the fine sand and the nitrate-contaminated groundwater fully react, and denitrify the nitrate into nitrogen, so that the contaminated groundwater is purified, thereby effectively improving the water quality, which is conducive to the repair of the groundwater contaminated by nitrate.

[0032] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0033] In practical application, first, a liquid carbon source (such as ethanol, glucose and other non-toxic and environmentally friendly liquid carbon sources) is injected into the stirring box 24, and an appropriate amount of water is added to the stirring box 24. The stirring motor 25 is operated, and the stirring motor 25 drives the stirring shaft 26 to rotate, and the stirring blades 27 rotate accordingly. The rotation of the stirring blades 27 makes the liquid carbon source and water fully combine, so that the mixed solution in the stirring box 24 enters the injection well 1 through the circulation pipe 28. Secondly, the mixed solution is flowed to the horizontal well 3 through the peristaltic pump 2, and fine sand is injected into the repair cavity 8 through the sand inlet pipe 9. Denitrifying bacteria will grow on the fine sand, and groundwater contaminated by nitrates will enter the water diversion cavity 5 through the water diversion hole 6. Then, the drive motor 17 works, and the drive motor 17 drives the drive shaft 16 to rotate in the sleeve 18, and the bevel gear 2 15 rotates accordingly, and the bevel gear 2 15 is meshed with the bevel gear 1 14. , so that the rotating shaft 11 rotates in the horizontal well 3, and the rotation of the rotating shaft 11 causes the spiral blade 12 to rotate accordingly. The rotation of the spiral blade 12 brings the mixed solution in the water diversion chamber 5 and the groundwater contaminated by nitrates closer to the through hole 7, and flows into the repair chamber 8 through the through hole 7. The rotation of the rotating shaft 11 causes the first stirring rod 13 and the fixing member 29 to rotate synchronously, and causes the first gear 30 to rotate accordingly. The first gear 30 is meshed with the second gear 32, so that the rotating rod 31 rotates in the repair chamber 8. The rotation of the rotating rod 31 causes the second stirring rod 33 to rotate synchronously, and cooperates with the first stirring rod 13 on the rotating shaft 11, so that the denitrifying bacteria grown on the fine sand fully react with the groundwater contaminated by nitrates, and denitrifies the nitrates into nitrogen, so that the contaminated groundwater is purified, thereby effectively improving the water quality, which is conducive to the repair of the groundwater contaminated by nitrates.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A groundwater microbial in-situ remediation device, comprising an injection well (1), characterized in that: A peristaltic pump (2) is fixedly arranged inside the injection well (1); a horizontal well (3) is fixedly arranged on the bottom end of the outer surface of the injection well (1); a pumping well (20) is fixedly arranged on the end of the horizontal well (3) away from the injection well (1); a pumping pump (22) is fixedly arranged inside the pumping well (20); the interior of the pumping well (20) and the interior of the injection well (1) are interconnected with the interior of the horizontal well (3); an acceleration component is fixed inside the horizontal well (3); the acceleration component comprises a fixed block (10) symmetrically arranged inside the horizontal well (3); the horizontal well (3) A filter screen (19) is provided at one end of the interior away from the fixed block (10); a rotating shaft (11) is rotatably connected between the fixed blocks (10); a spiral blade (12) is fixedly connected to the outer surface of the rotating shaft (11); a first stirring rod (13) is welded at an equal distance to one end of the outer surface of the rotating shaft (11) away from the spiral blade (12); a fixing piece (29) is fixedly connected to one end of the rotating shaft (11) away from the first stirring rod (13); and a driving assembly is provided at one end of the rotating shaft (11) away from the fixing piece (29).

2. The groundwater microbial in-situ remediation device according to claim 1, characterized in that: The driving assembly comprises a bevel gear 1 (14) welded to the rotating shaft (11); a sleeve (18) is welded to the top of the horizontal well (3); the sleeve (18) is communicated with the interior of the horizontal well (3); a driving shaft (16) is rotatably connected to the interior of the sleeve (18); the bottom end of the driving shaft (16) extends to the interior of the horizontal well (3) and is fixedly connected to a bevel gear 2 (15); the bevel gear 2 (15) is meshed with the bevel gear 1 (14); the top end of the driving shaft (16) extends to the outside of the sleeve (18) and is connected to the output end of a driving motor (17).

3. The groundwater microbial in-situ remediation device according to claim 1, characterized in that: A fixed support plate (23) is fixedly connected to one end of the outer surface of the injection well (1), and a stirring box (24) is fixedly connected to the fixed support plate (23). The stirring box (24) is connected to the injection well (1) through a circulation pipe (28). A stirring shaft (26) is rotatably connected inside the stirring box (24), and stirring blades (27) are welded to the stirring shaft (26) at equal distances. The bottom end of the stirring shaft (26) passes through the fixed support plate (23) and is connected to the output end of the stirring motor (25).

4. The groundwater microbial in-situ remediation device according to claim 1, characterized in that: A first gear (30) is provided inside the fixing member (29), and the first gear (30) is fixedly connected to the rotating shaft (11). A rotating rod (31) is rotatably connected to the two ends of the fixing member (29) away from the rotating shaft (11). A second gear (32) is fixedly connected to the rotating rod (31), and the second gear (32) is meshed with the first gear (30). One end of the rotating rod (31) extends outside the fixing member (29) and is connected to a supporting member (34), and the supporting member (34) is fixedly connected to the rotating shaft (11). Second stirring rods (33) are welded at equal distances on the outer surface of the rotating rod (31), and the second stirring rods (33) are staggered with the first stirring rods (13).

5. The groundwater microbial in-situ remediation device according to claim 2, characterized in that: A sand inlet pipe (9) is fixedly connected to one end of the top of the horizontal well (3) away from the sleeve (18), and the sand inlet pipe (9) is in communication with the interior of the horizontal well (3).

6. The groundwater microbial in-situ remediation device according to claim 1, characterized in that: A partition plate (4) is provided between the spiral blade (12) and the first stirring rod (13); the rotating shaft (11) passes through the partition plate (4) and can rotate on the partition plate (4); the partition plate (4) is fixedly connected to the inside of the horizontal well (3); the partition plate (4) divides the inside of the horizontal well (3) into a water diversion chamber (5) and a repair chamber (8); water diversion holes (6) are provided at equal distances on the inner surface of the water diversion chamber (5); and the water diversion holes (6) extend to the outside of the horizontal well (3).

7. The groundwater microbial in-situ remediation device according to claim 6, characterized in that: The partition plate (4) is provided with through holes (7) at equal intervals.

8. The groundwater microbial in-situ remediation device according to claim 1, characterized in that: A sedimentation well (21) is fixedly provided at the bottom end of the water pumping well (20).

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