A wastewater treatment device and treatment method for heavy metal remediation

Abstract

The present invention relates to the technical field of sewage treatment, and proposes a wastewater treatment device and treatment method for heavy metal repair, comprising a treatment pool, a first motor is fixedly installed at the bottom end of the treatment pool, a threaded shaft is installed at the upper end of the first motor, a partition mechanism is connected to the middle of the threaded shaft, and a stirring mechanism is connected to the upper end of the partition mechanism. The wastewater is treated in layers by the partition mechanism, so that the sewage and the treated medicine powder are evenly mixed to avoid uneven reaction of the wastewater during the treatment process, the stirring mechanism scoops up the sewage on the partition mechanism along the inclined surface of the flap, and flows out in several streams on the guide groove, and at the same time, due to the synchronous rotation of the stirring mechanism and the medicine throwing mechanism, the roller brings out the medicine powder in the medicine storage grid according to the amount, to prevent excessive medicine from being added, resulting in an imbalance in the proportion of the medicine, and the sewage diverted on the guide groove is evenly mixed with the medicine powder rolled out from the roller by the impact of the water flow during the spraying process.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a sewage treatment device and a treatment method for heavy metal remediation. Background Art

[0002] The existing heavy metal wastewater treatment equipment has the following technical problems during use: the existing heavy metal treatment pool directly sprinkles the treatment agent into the treatment pool during the degradation process. The treatment agent cannot be quickly and evenly stirred by relying solely on the stirring device, resulting in excessive local concentration and violent reaction, producing large crystals, weak edge reaction and poor precipitation effect. Excessive reaction reagents need to be added or the stirring time is extended to completely react the wastewater in the treatment pool, resulting in waste of reaction reagents and excessive addition can easily cause secondary pollution, low degradation efficiency, and the overall cross-sectional area of ​​the existing stirring device is small, which cannot have a large-scale turbulent stirring effect on the liquid. The stirring time is long and the overall mixing effect is poor, affecting the removal efficiency of heavy metal ions.

[0003] Therefore, we have made improvements to this and proposed a wastewater treatment device and method for heavy metal remediation. Summary of the invention

[0004] The technical problems to be solved by the present invention are: uneven scattering of the agent, low degradation efficiency, poor stirring and mixing effect, and low removal efficiency of heavy metal ions.

[0005] In order to achieve the above-mentioned purpose of the invention, the present invention provides a wastewater treatment device for heavy metal remediation, including a treatment tank, a first motor is fixedly installed at the bottom end of the treatment tank, a threaded shaft is installed at the upper end of the first motor, a partition mechanism is connected to the middle of the threaded shaft, a stirring mechanism is connected to the upper end of the partition mechanism, a chemical spraying mechanism is fixedly installed at the upper end of the stirring mechanism, the chemical spraying mechanism is rotatably connected to the treatment tank, a connecting frame is installed at the inner end of the chemical spraying mechanism, and the connecting frame is sleeved on the threaded shaft.

[0006] As a further solution of the present invention, the treatment tank comprises a tank body, a water inlet pipe is fixedly connected to the bottom of the tank body, and a gear ring is installed at the upper edge of the tank body.

[0007] As a further solution of the present invention, the threaded shaft includes a screw, the upper end of the screw is connected to a first gear, the top of the first gear is installed with a second motor, and the second motor is fixedly installed on the top of the screw.

[0008] As a further scheme of the present invention, the partition mechanism includes a first partition and a second partition, the middle of the first partition and the second partition are connected with a connecting sleeve, the connecting sleeve is threadedly connected to the threaded shaft, the edge of the first partition is connected with a connecting layer, the bottom of the second partition is connected to a water outlet pipe, a sieve hole is opened in the middle of the first partition, the middle of the first partition and the second partition are connected with a bellows, and a one-way plate is installed on the upper end of the bellows.

[0009] As a further solution of the present invention, the stirring mechanism includes a flap, the bottom of the flap is connected to the bottom plate, a slider is installed at the bottom of the bottom plate, the slider is slidably installed on the upper end of the partition mechanism, a movable door is hinged in the middle of the flap and the bottom plate, and a plurality of partition pages are installed inside the movable door.

[0010] As a further solution of the present invention, the flap is spiral-shaped, the top end of the flap is installed on the medicine spraying mechanism, and the upper edge of the flap is provided with a plurality of guide grooves with semicircular notches.

[0011] As a further solution of the present invention, the medicine spraying mechanism includes a medicine storage grid, both ends of the medicine storage grid are connected to mounting frames, the bottom end of the mounting frame is fixedly connected to the stirring mechanism, and the bottom of the mounting frame is rotatably connected to a roller, the inner end of the roller is connected to a second gear, the second gear is meshingly installed with the first gear, the outer end of the roller is connected to a third gear, and the third gear is meshingly connected to a gear ring.

[0012] A method for treating wastewater for heavy metal remediation, using the above-mentioned wastewater treatment device for heavy metal remediation, comprises the following steps:

[0013] S1. Wastewater containing heavy metals is discharged into the interior of the pool through the water inlet pipe. The partition mechanism is at the uppermost layer inside the treatment pool. The first motor drives the threaded shaft to rotate, so that the partition mechanism squeezes the wastewater in the pool downward, so that the wastewater is squeezed to the top of the first partition through the corrugated pipe, and the wastewater is layered up and down. The upper end of the stirring mechanism and the drug throwing mechanism are fixed at a height level with the top of the treatment pool, but the bottom end of the stirring mechanism is connected to the partition mechanism. As the partition mechanism rises and falls, the stirring mechanism stretches up and down, and the movable door and the partition are also stretched and unfolded. After layering, the second motor drives the first gear to rotate, so that the first gear is meshed with the second gear, and the first gear drives the second gear to rotate, so that the stirring mechanism and the drug throwing mechanism The roller rotates above the partition mechanism, scoops up the sewage on the partition mechanism along the inclined surface of the flap, and divides the sewage into several streams on the guide groove. At the same time, due to the connection between the roller and the second gear, the roller rotates at the bottom of the medicine storage grid, rolls out the medicine powder inside the medicine storage grid, and sprinkles it evenly on the water flow. As the water flows downward, the medicine powder is mixed with the sewage, and at the same time, the sewage is stirred under the action of the rotation of the stirring mechanism, so that the heavy metal agglomerates in the sewage are separated. The first gear is reversed, so that the flap and the bottom plate rotate in the opposite direction, and the heavy metal crystals in the sewage pass through the partition page into the middle of the flap and the bottom plate. The separated clean water passes through the sieve hole into the interlayer of the first partition and the second partition, and is finally discharged in the outlet pipe;

[0014] S2. After the internal sewage is treated, the first motor continues to rotate, pulling the partition mechanism and the stirring mechanism downward a little bit, so that the sewage in the tank body flows out to the top of the partition mechanism again, and repeats the above steps to treat this part of the sewage until all the sewage is treated;

[0015] S3. After the sewage in the treatment pool is completely treated, all the heavy metal lumps generated by the treatment are stored between the flap and the bottom plate. Pull the movable door and the partition to one side and take out all the lumps.

[0016] The wastewater treatment device and treatment method for heavy metal remediation provided by the present invention have the following beneficial effects:

[0017] 1. By discharging the wastewater containing heavy metals into the tank body and performing layered treatment through the separation mechanism, the wastewater and the treated powder are evenly mixed to avoid uneven reaction of the wastewater during the treatment process. The first gear drives the stirring mechanism and the drug throwing mechanism to rotate together inside the treatment tank, and the sewage on the separation mechanism is shoveled upward along the inclined surface of the flap, and divided into several streams on the guide groove to flow out. At the same time, due to the synchronous rotation of the stirring mechanism and the drug throwing mechanism, the roller brings out the powder in the drug storage grid according to the amount, preventing excessive dosage of the drug from causing imbalance in the drug ratio, and the sewage diverted on the guide groove is evenly mixed with the powder rolled out from the roller by the impact of the water flow during the spraying process.

[0018] 2. By leaving a space between the flap and the bottom plate and blocking it with a hinged movable door, a one-way partition is installed in the middle of the movable door, so that the heavy metal crystals in the sewage can be stored when the flap and the bottom plate rotate in opposite directions, which is convenient for sewage treatment. Pull the movable door and the partition to one side and take out all the lumps.

[0019] 3. By connecting the partition mechanism with a thread in the middle of the threaded shaft, a gap is left between the folded first partition and the second partition, and a sieve hole is opened on the first partition, so that the separated clean water passes through the sieve hole into the partition between the first partition and the second partition, and is finally discharged from the outlet pipe, so that the heavy metal agglomerates are separated and the sewage is treated until all the sewage is treated. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of a wastewater treatment device for heavy metal remediation provided in this application;

[0022] Figure 2 A structural cross-sectional view of a wastewater treatment device for heavy metal remediation provided in this application;

[0023] Figure 3 A schematic diagram of the structure of a threaded shaft and a separation mechanism of a wastewater treatment device for heavy metal remediation provided in this application;

[0024] Figure 4 A schematic diagram of the structure of a separation mechanism of a wastewater treatment device for heavy metal remediation provided in this application;

[0025] Figure 5 A schematic diagram of the front structure of a stirring mechanism of a wastewater treatment device for heavy metal remediation provided in this application;

[0026] Figure 6 A schematic diagram of the reverse structure of a stirring mechanism of a wastewater treatment device for heavy metal remediation provided in this application;

[0027] Figure 7 A schematic diagram of the structure of a reagent spraying mechanism of a wastewater treatment device for heavy metal remediation provided in this application;

[0028] Figure 8 for Figure 2 A schematic diagram of the structure at A;

[0029] Fig. 9 for Figure 4 Enlarged schematic diagram of the structure at B.

[0030] In the figure: 1. treatment tank; 11. tank body; 12. water inlet pipe; 13. gear ring; 2. first motor; 3. threaded shaft; 31. screw; 32. first gear; 33. second motor; 4. partition mechanism; 41. first partition plate; 42. second partition plate; 43. connecting layer; 44. connecting sleeve; 45. sieve hole; 46. water outlet pipe; 47. bellows; 48. one-way plate; 5. stirring mechanism; 51. flap; 52. guide groove; 53. bottom plate; 54. slider; 55. movable door; 56. partition; 6. medicine spraying mechanism; 61. medicine storage grid; 62. roller; 63. second gear; 64. third gear; 65. mounting frame; 7. connecting frame. DETAILED DESCRIPTION

[0031] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples of the specification. The following examples are only used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0032] like Figure 1-Figure 9 As shown, this embodiment proposes a wastewater treatment device for heavy metal remediation, including a treatment tank 1, a first motor 2 is fixedly installed at the bottom end of the treatment tank 1, a threaded shaft 3 is installed at the upper end of the first motor 2, a partition mechanism 4 is connected to the middle of the threaded shaft 3, a stirring mechanism 5 is connected to the upper end of the partition mechanism 4, a drug spraying mechanism 6 is fixedly installed on the upper end of the stirring mechanism 5, the drug spraying mechanism 6 is rotatably connected to the treatment tank 1, a connecting frame 7 is installed at the inner end of the drug spraying mechanism 6, and the connecting frame 7 is sleeved on the threaded shaft 3.

[0033] The treatment tank 1 includes a tank body 11, a water inlet pipe 12 is fixedly connected to the bottom of the tank body 11, a gear ring 13 is installed on the upper edge of the tank body 11, the tank body 11 is used to store sewage, and the sewage is injected into the tank body 11 from bottom to top. The gear ring 13 is connected to the drug spraying mechanism 6, so that the drug spraying mechanism 6 rotates according to the trajectory.

[0034] The threaded shaft 3 includes a screw 31, the upper end of the screw 31 is connected to a first gear 32, a second motor 33 is installed at the top of the first gear 32, and the second motor 33 is fixedly installed at the top of the screw 31. The screw 31 is fixedly connected to the first motor 2 to adjust the separation mechanism 4 up and down, and the first gear 32 is fixedly connected to the second motor 33 to rotate and drive the agent spraying mechanism 6, so that the stirring mechanism 5 and the agent spraying mechanism 6 perform sewage stratification treatment above the separation mechanism 4.

[0035] The partition mechanism 4 includes a first partition plate 41 and a second partition plate 42, a connecting sleeve 44 is connected to the middle of the first partition plate 41 and the second partition plate 42, the connecting sleeve 44 is threadedly connected to the threaded shaft 3, a connecting layer 43 is connected to the edge of the first partition plate 41, and a water outlet pipe 46 is connected to the bottom of the second partition plate 42. A sieve hole 45 is opened in the middle of the first partition plate 41, and a bellows 47 is connected to the middle of the first partition plate 41 and the second partition plate 42. A one-way plate 48 is installed on the upper end of the bellows 47. The bellows 47 squeezes the sewage from the bottom of the partition mechanism 4 upward in a one-way direction, and the sewage is treated separately above the partition mechanism 4. The heavy metals in the sewage are separated by the first partition plate 41, so that the purified sewage is discharged separately through the water outlet pipe 46.

[0036] The stirring mechanism 5 includes a flap 51, the bottom of which is connected to a bottom plate 53, a slider 54 is installed at the bottom of the bottom plate 53, the slider 54 is slidably installed on the upper end of the partition mechanism 4, a movable door 55 is hinged in the middle of the flap 51 and the bottom plate 53, and a plurality of partitions 56 are installed inside the movable door 55. The flap 51 is fixedly connected to the medicine sprinkling mechanism 6, and is rotated above the partition mechanism 4 by the drive of the threaded shaft 3, so that the sewage on the first partition plate 41 is brought upward and sprayed out in strands, and is fully mixed with the medicine powder sprayed on the medicine sprinkling mechanism 6 when sprayed, so as to facilitate the full treatment of the sewage.

[0037] The flap 51 is spiral-shaped, and the top of the flap 51 is installed on the medicine throwing mechanism 6. The upper edge of the flap 51 is provided with a plurality of guide grooves 52 with semicircular notches. When the spiral shape of the flap 51 rotates in the sewage, the sewage is brought up obliquely and diverted at the guide groove 52. After the diversion, the impact from top to bottom can also make the sewage and the medicine powder react more fully, which is convenient for the treatment of the sewage.

[0038] The medicine sprinkling mechanism 6 includes a medicine storage grid 61, both ends of which are connected to mounting frames 65, the bottom ends of the mounting frames 65 are fixedly connected to the stirring mechanism 5, and the bottom of the mounting frames 65 is rollingly connected to a roller 62, the inner end of the roller 62 is connected to a second gear 63, the second gear 63 is meshed and installed with the first gear 32, the outer end of the roller 62 is connected to a third gear 64, the third gear 64 is meshed and connected with the gear ring 13, the rolling connection between the medicine storage grid 61 and the roller 62 prevents the medicine powder in the medicine storage grid 61 from being excessively spilled, and the medicine powder in the medicine storage grid 61 is quantitatively taken out when the roller 62 rolls.

[0039] A method for treating wastewater for heavy metal remediation, using the above-mentioned wastewater treatment device for heavy metal remediation, comprises the following steps:

[0040] S1. Wastewater containing heavy metals is discharged into the interior of the pool body 11 through the water inlet pipe 12. The partition mechanism 4 is at the uppermost layer inside the treatment pool 1. The first motor 2 drives the threaded shaft 3 to rotate, so that the partition mechanism 4 squeezes the wastewater in the pool body 11 downward, so that the wastewater is squeezed to the top of the first partition plate 41 through the bellows 47, and the wastewater is layered up and down. The upper end of the stirring mechanism 5 and the drug throwing mechanism 6 are fixed at a height level with the top of the treatment pool 1, but the bottom end of the stirring mechanism 5 is connected to the partition mechanism 4. As the partition mechanism 4 rises and falls, the stirring mechanism 5 stretches up and down, and the movable door 55 and the partition 56 are also stretched and unfolded. After the layering, the second motor 33 drives the first gear 32 to rotate, so that the first gear 32 is meshed with the second gear 63, and the first gear 32 drives the second gear 63 to rotate, so that the stirring mechanism 5 and the drug throwing mechanism 6 rotates above the partition mechanism 4, scoops up the sewage on the partition mechanism 4 along the inclined surface of the flap 51, and makes the sewage flow out in several streams on the guide groove 52. At the same time, due to the connection between the roller 62 and the second gear 63, the roller 62 rotates at the bottom of the medicine storage grid 61, rolls out the medicine powder inside the medicine storage grid 61, and sprinkles it evenly on the water flow. As the water flows downward, the medicine powder is mixed with the sewage. At the same time, the sewage is stirred under the action of the rotation of the stirring mechanism 5, so that the heavy metal agglomerates in the sewage are separated. The first gear 32 is reversed, so that the flap 51 and the bottom plate 53 rotate in the opposite direction, and the heavy metal crystals in the sewage pass through the partition 56 into the middle of the flap 51 and the bottom plate 53. The separated clean water passes through the sieve hole 45 into the partition layer of the first partition 41 and the second partition 42, and is finally discharged in the outlet pipe 46.

[0041] S2. After the internal sewage is treated, the first motor 2 continues to rotate, pulling the partition mechanism 4 and the stirring mechanism 5 downward a part, so that the sewage in the tank body 11 flows out to the top of the partition mechanism 4 again, and repeats the above steps to treat this part of the sewage until all the sewage is treated;

[0042] S3. After the sewage in the treatment tank 1 is completely treated, all the heavy metal agglomerates generated by the treatment are stored between the flap 51 and the bottom plate 53. The movable door 55 and the partition sheet 56 are pulled to one side to take out all the agglomerates.

[0043] The contents not described in detail in this specification belong to the prior art known to professionals in this field.

[0044] The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Although the present invention is described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A wastewater treatment device for heavy metal remediation, comprising a treatment tank (1), characterized in that: A first motor (2) is fixedly mounted at the bottom end of the treatment pool (1); a threaded shaft (3) is mounted at the upper end of the first motor (2); a partition mechanism (4) is connected to the middle of the threaded shaft (3); a stirring mechanism (5) is connected to the upper end of the partition mechanism (4); a medicine spraying mechanism (6) is fixedly mounted at the upper end of the stirring mechanism (5); the medicine spraying mechanism (6) is rotatably connected to the treatment pool (1); a connecting frame (7) is mounted at the inner end of the medicine spraying mechanism (6); and the connecting frame (7) is sleeved on the threaded shaft (3); The partition mechanism (4) comprises a first partition plate (41) and a second partition plate (42); a connecting sleeve (44) is connected to the middle of the first partition plate (41) and the second partition plate (42); the connecting sleeve (44) is threadedly connected to the threaded shaft (3); a connecting layer (43) is connected to the edge of the first partition plate (41); a water outlet pipe (46) is connected to the bottom of the second partition plate (42); a sieve hole (45) is provided in the middle of the first partition plate (41); a bellows (47) is connected to the middle of the first partition plate (41) and the second partition plate (42); a one-way plate (48) is installed at the upper end of the bellows (47); The stirring mechanism (5) comprises a flap (51), the bottom of the flap (51) is connected to a bottom plate (53), a slider (54) is installed at the bottom of the bottom plate (53), the slider (54) is slidably installed on the upper end of the partition mechanism (4), a movable door (55) is hingedly connected to the middle of the flap (51) and the bottom plate (53), and a plurality of partition pages (56) are installed inside the movable door (55); The medicine spraying mechanism (6) comprises a medicine storage grid (61), both ends of the medicine storage grid (61) are connected to mounting frames (65), the bottom end of the mounting frame (65) is fixedly connected to the stirring mechanism (5), and the bottom of the mounting frame (65) is rollingly connected to a roller (62), the inner end of the roller (62) is connected to a second gear (63), the second gear (63) is meshingly mounted with the first gear (32), and the outer end of the roller (62) is connected to a third gear (64), and the third gear (64) is meshingly connected to the gear ring (13).

2. A wastewater treatment device for heavy metal remediation according to claim 1, characterized in that: The treatment pool (1) comprises a pool body (11), the bottom of the pool body (11) is fixedly connected to a water inlet pipe (12), and the upper edge of the pool body (11) is provided with a gear ring (13).

3. A wastewater treatment device for heavy metal remediation according to claim 1, characterized in that: The threaded shaft (3) comprises a screw rod (31), the upper end of the screw rod (31) is connected to a first gear (32), a second motor (33) is mounted on the top end of the first gear rod (32), and the second motor (33) is fixedly mounted on the top end of the screw rod (31).

4. A wastewater treatment device for heavy metal remediation according to claim 1, characterized in that: The flap (51) is spiral-shaped, the top end of the flap (51) is mounted on the medicine spraying mechanism (6), and the upper edge of the flap (51) is provided with a plurality of guide grooves (52) with semicircular notches.

5. A wastewater treatment method for heavy metal remediation, characterized in that: A wastewater treatment device for heavy metal remediation according to any one of claims 1 to 4 comprises the following steps: S1. Wastewater containing heavy metals is discharged into the interior of the tank body (11) through the water inlet pipe (12). The partition mechanism (4) is located at the uppermost layer inside the treatment tank (1). The first motor (2) drives the threaded shaft (3) to rotate, so that the partition mechanism (4) presses the wastewater in the tank body (11) downward, so that the wastewater passes through the bellows (47) and is squeezed onto the top of the first partition plate (41), and the wastewater is divided into upper and lower layers. The upper end of the stirring mechanism (5) and the reagent throwing mechanism (6) are fixed to the treatment tank. (1) The top of the mixing mechanism (5) is flat, but the bottom of the mixing mechanism (5) is connected to the partition mechanism (4). As the partition mechanism (4) rises and falls, the mixing mechanism (5) stretches up and down, and the movable door (55) and the partition (56) are also stretched and unfolded. After the separation, the second motor (33) drives the first gear (32) to rotate, so that the first gear (32) and the second gear (63) are meshed, and the first gear (32) drives the second gear (63) to rotate, so that the mixing mechanism (5) and the medicine are The drug throwing mechanism (6) rotates above the partition mechanism (4), scoops up the sewage on the partition mechanism (4) along the inclined surface of the flap (51), and causes the sewage to flow out in several streams on the guide groove (52). At the same time, due to the connection between the roller (62) and the second gear (63), the roller (62) rotates at the bottom of the drug storage grid (61), rolls out the drug powder inside the drug storage grid (61), and evenly sprinkles it on the water flow. As the water flows downward, the drug powder is mixed with the sewage, and At the same time, the sewage is stirred under the action of the rotation of the stirring mechanism (5), so that the heavy metal agglomerates in the sewage are separated, and the first gear (32) is reversed, so that the flap (51) and the bottom plate (53) rotate in the opposite direction, and the heavy metal crystals in the sewage pass through the partition sheet (56) into the middle of the flap (51) and the bottom plate (53), and the separated clean water passes through the sieve hole (45) into the partition layer between the first partition plate (41) and the second partition plate (42), and is finally discharged in the outlet pipe (46); S2, when the sewage inside has been processed, the first motor (2) continues to rotate, pulling the partition mechanism (4) and the stirring mechanism (5) downward a little further, so that the sewage in the tank body (11) flows out again to the top of the partition mechanism (4); S3. After the sewage in the treatment tank (1) is completely treated, all the heavy metal agglomerates generated by the treatment are stored between the flap (51) and the bottom plate (53). The movable door (55) and the partition sheet (56) are pulled to one side to remove all the agglomerates.

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