Reusing device for general cleaning wastewater containing heavy metals

Abstract

The utility model relates to the technical field of wastewater treatment, and discloses a heavy-metal-containing general cleaning wastewater recycling device which comprises a wastewater adjusting tank, a first treatment tank is arranged on the left side in the wastewater adjusting tank, a second treatment tank is arranged on the lower portion of the first treatment tank, and a third treatment tank is arranged outside the first treatment tank and the second treatment tank. A settling pond I is arranged outside the treating pond III, a treating pond V is arranged at the lower part of the settling pond I, a treating pond VI is arranged at the lower part of the treating pond V, a settling pond II is arranged outside the treating pond V and the treating pond VI, and a treating pond VII is arranged outside the settling pond II; mud scraping assemblies are arranged in the sedimentation tank I and the sedimentation tank II, and a gravel filter plate is inserted into the lower part of the wastewater adjusting tank. According to the utility model, the sandstone filter plate is convenient to replace, the operation is simple, time and labor are saved, and the wastewater treatment efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a device for recycling general cleaning wastewater containing heavy metals. Background Art

[0002] In industrial production, the electroplating industry is one of the typical sources of heavy metal pollution. In the electroplating process, the surface treatment and cleaning of the workpiece will produce a large amount of cleaning wastewater containing heavy metals. The heavy metal ions (such as chromium, nickel, zinc, lead, copper, cadmium, etc.) in these wastewaters are very toxic to the environment and human health. If they are discharged directly without treatment, they will cause serious pollution of water bodies, soil and ecosystems. At this time, it is necessary to use a general cleaning wastewater recycling device containing heavy metals. The heavy metals in the wastewater are removed through the treatment device, and the treated wastewater is reused for production, reducing the consumption of clean water resources and alleviating the problem of water shortage.

[0003] The traditional cleaning wastewater reuse device, when treating wastewater, transports the cleaning wastewater to the inside of the treatment tank through the water inlet, first, then, by adding flocculants (such as PAC), coagulants (such as PAM) and heavy metal capture agents, react with the pollutants in the wastewater, and then, through the sedimentation area in the treatment tank, the floccules are deposited to the bottom of the tank to form sludge, and the clear liquid enters the next step of treatment through overflow. The clear liquid passes through the sand and gravel filter plate to further remove the residual particulate matter and some soluble pollutants in the wastewater. The treated wastewater is discharged from the outlet of the treatment tank and stored in the water tank.

[0004] Although the existing cleaning wastewater reuse device can complete the treatment of cleaning wastewater, a large amount of impurities will adhere to the surface of the sand and gravel filter plate after long-term use. At this time, it needs to be replaced. The traditional replacement method is cumbersome, time-consuming and labor-intensive, thereby reducing the wastewater treatment efficiency. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a general cleaning wastewater recycling device containing heavy metals, aiming to improve the problem in the prior art that a large amount of impurities will adhere to the surface of the sand and gravel filter plate after long-term use. At this time, it needs to be replaced. The traditional replacement method is cumbersome, time-consuming and labor-intensive, thereby reducing the wastewater treatment efficiency.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A device for recycling general cleaning wastewater containing heavy metals, comprising a wastewater regulating tank, wherein a treatment tank 1 is arranged on the left side inside the wastewater regulating tank, a treatment tank 2 is arranged at the lower part of the treatment tank, a treatment tank 3 is arranged outside the treatment tank 1 and the treatment tank 2, a treatment tank 4 is arranged outside the treatment tank 3, a sedimentation tank 1 is arranged outside the treatment tank 4, a treatment tank 5 is arranged at the lower part of the sedimentation tank, a treatment tank 6 is arranged at the lower part of the treatment tank 5, a sedimentation tank 2 is arranged outside the treatment tank 5 and the treatment tank 6, a treatment tank 7 is arranged outside the sedimentation tank 2, a mud scraping assembly is arranged inside the sedimentation tank 1 and the sedimentation tank 2, a sand and gravel filter plate is plugged into the lower part of the wastewater regulating tank, an installation cavity is opened at the lower part of the wastewater regulating tank, and a replacement assembly is arranged inside the installation cavity;

[0008] The replacement component includes a telescopic rod, which is fixedly connected to the inside of the installation cavity, a slider is fixedly connected to the top of the telescopic rod, a spring is sleeved on the outside of the telescopic rod, a cross bar is fixedly connected to the upper part of the slider, and an insert is fixedly connected to the top of the slider.

[0009] Furthermore, the sludge scraping assembly includes an electric push rod, which is fixedly connected to both sides of the outside of the wastewater regulating tank, and the output ends of the two electric push rods are fixedly connected to a movable plate, the outside of the movable plate is fixedly connected to a connecting rod, the connecting rod is slidably connected to the inside of the wastewater regulating tank, the bottom of the connecting rod is fixedly connected to a scraper, the scraper is slidably connected to the inside of the sedimentation tank one and the sedimentation tank two, and the outsides of the sedimentation tank one and the sedimentation tank two are both fixedly connected to sewage outlets.

[0010] Furthermore, a through hole 1 is opened inside the wastewater regulating tank, and the plug block is slidably connected inside the through hole 1. A through hole 2 is opened on the upper part of the wastewater regulating tank, and the cross bar is slidably connected inside the through hole 2.

[0011] Furthermore, a slot is provided inside the sand and gravel filter plate, and the insert block is slidably connected inside the slot.

[0012] Furthermore, an air inlet pipe is installed inside the treatment pool 1 and the treatment pool 7, and an air outlet is fixedly connected to the bottom of the air inlet pipe.

[0013] Furthermore, guide rods are fixedly connected inside the sedimentation tank 1 and the sedimentation tank 2, and the two scrapers are slidably connected to the outside of the two guide rods.

[0014] Furthermore, the upper parts of the treatment pool 1, treatment pool 2, treatment pool 3, treatment pool 4, treatment pool 5, treatment pool 6 and treatment pool 7 are all fixedly connected with a dosing port.

[0015] Furthermore, a water inlet is fixedly connected to the left side of the outside of the wastewater regulating tank, a water outlet is fixedly connected to the left side of the outside of the treatment tank, and a movable vertical ladder is arranged at the rear side of the outside of the wastewater regulating tank.

[0016] The utility model has the following beneficial effects:

[0017] 1. In the utility model, when replacing the sand and gravel filter plate, the moving cross bar drives the slider and the plug block to move, and at the same time compresses the telescopic rod and the spring. When the plug block is out of the slot, the filter plate can be taken out for cleaning or replacement. When installing, the filter plate is inserted into the wastewater regulating tank, the cross bar is loosened, and the plug block is inserted into the slot to complete the fixation by the reaction force of the spring. This design is convenient for replacement, saves time and effort, and improves the wastewater treatment efficiency.

[0018] 2. In the utility model, when scraping the sludge inside the sedimentation tank, the electric push rod is started to drive the moving plate, the connecting rod and the scraper to move, and the scraper pushes the sludge in the sedimentation tank to the sewage outlet. This design facilitates the removal of sludge, reduces the accumulation and discharge time, and improves the operation efficiency of the sedimentation tank.

[0019] 3. In the utility model, an air inlet pipe and an air outlet are provided in the treatment pool 1 and the treatment pool 7. When in use, external air is injected into the air inlet pipe and then discharged through the air outlet to achieve the effect of pneumatic stirring. Pneumatic stirring utilizes the physical property of natural rise of gas and does not require a mechanical stirring device, thereby reducing energy consumption and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a three-dimensional diagram of a general cleaning wastewater recycling device containing heavy metals proposed by the utility model;

[0021] Figure 2 This is a schematic diagram of the movable vertical ladder structure of a heavy metal-containing general cleaning wastewater recycling device proposed by the utility model;

[0022] Figure 3 This is a cross-sectional view of a wastewater regulating tank of a heavy metal-containing general cleaning wastewater recycling device proposed by the utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of a wastewater regulating tank of a general cleaning wastewater recycling device containing heavy metals proposed by the utility model;

[0024] Figure 5 This is a schematic diagram of the scraper structure of a general cleaning wastewater recycling device containing heavy metals proposed by the utility model;

[0025] Figure 6 This is a schematic diagram of the gas outlet structure of a general cleaning wastewater recycling device containing heavy metals proposed by the utility model;

[0026] Figure 7 for Figure 3 A magnified view of the structure in the middle.

[0027] Legend:

[0028] 1. Wastewater regulating tank; 2. Water inlet; 3. Water outlet; 4. Movable vertical ladder; 5. Dosing port; 6. Treatment tank one; 7. Treatment tank two; 8. Treatment tank three; 9. Treatment tank four; 10. Sedimentation tank one; 11. Treatment tank five; 12. Treatment tank six; 13. Sedimentation tank two; 14. Treatment tank seven; 15. Sand and gravel filter plate; 16. Installation cavity; 17. Telescopic rod; 18. Spring; 19. Slider; 20. Crossbar; 21. Insert block; 22. Through hole one; 23. Slot; 24. Electric push rod; 25. Moving plate; 26. Connecting rod; 27. Scraper; 28. Guide rod; 29. ​​Sewage outlet; 30. Through hole two; 31. Air inlet pipe; 32. Air outlet. DETAILED DESCRIPTION

[0029] 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.

[0030] Reference Figure 1-Figure 7The utility model provides an embodiment: a heavy metal-containing general cleaning wastewater recycling device, comprising a wastewater regulating tank 1, a treatment tank 1 6 is arranged on the left side of the wastewater regulating tank 1, a treatment tank 2 7 is arranged at the bottom of the treatment tank 1 6, a treatment tank 3 8 is arranged outside the treatment tank 1 6 and the treatment tank 2 7, a treatment tank 4 9 is arranged outside the treatment tank 3 8, a sedimentation tank 10 is arranged outside the treatment tank 4 9, a treatment tank 5 11 is arranged at the bottom of the sedimentation tank 10, a treatment tank 6 12 is arranged at the bottom of the treatment tank 5 11, and the treatment tank 5 11 and the treatment tank 6 A sedimentation tank 12 is provided with a second sedimentation tank 13 outside, a treatment tank 14 is provided outside the sedimentation tank 13, and a sludge scraping assembly is provided inside the sedimentation tank 10 and the second sedimentation tank 13. The sludge scraping assembly is provided to facilitate the scraping of the sludge inside the sedimentation tank 10 and the second sedimentation tank 13. A sand and gravel filter plate 15 is plugged into the lower part of the wastewater regulating tank 1 to remove tiny suspended matter and flocculant residues. An installation cavity 16 is provided at the lower part of the wastewater regulating tank 1. A replacement assembly is provided inside the installation cavity 16. The replacement assembly is provided to facilitate the replacement of the sand and gravel filter plate 15. 6 and treatment pool 7 14 are both equipped with an air inlet pipe 31, and an air outlet 32 ​​is fixedly connected to the bottom of the air inlet pipe 31. By arranging the air inlet pipe 31 and the air outlet 32 ​​in treatment pool 1 6 and treatment pool 7 14, the effect of pneumatic stirring is achieved. The air inlet pipe 31 injects air or other gas into the bottom of the treatment pool, and the gas is released from the bottom to form a large number of bubbles. These bubbles rise rapidly in the water, which will generate vertical thrust and disturbance, driving the liquid in the pool to form convection and vortex. Treatment pool 1 6, treatment pool 2 7, treatment pool 3 8, treatment pool 4 9, treatment pool 5 The upper parts of the treatment pool 5 11, the treatment pool 6 12 and the treatment pool 7 14 are all fixedly connected with a dosing port 5, which is convenient for adding flocculants (such as PAC), coagulants (such as PAM) and heavy metal capture agents by setting the dosing port 5. The wastewater regulating pool 1 is fixedly connected with a water inlet 2 on the left side of the outside, which is convenient for the entry of wastewater by setting the water inlet 2. The treatment pool 7 14 is fixedly connected with a water outlet 3 on the left side of the outside, which is convenient for the discharge of treated wastewater by setting the water outlet 3. A movable vertical ladder 4 is arranged on the rear side of the outside of the wastewater regulating pool 1 for the convenience of operators;

[0031] The replacement component includes a telescopic rod 17, which is fixedly connected to the inside of the installation cavity 16, a slider 19 is fixedly connected to the top of the telescopic rod 17, a spring 18 is sleeved on the outside of the telescopic rod 17, and a cross bar 20 is fixedly connected to the upper part of the slider 19. The cross bar 20 is provided to facilitate the use of the operator, and a plug block 21 is fixedly connected to the top of the slider 19. A through hole 22 is provided inside the wastewater regulating tank 1, and the plug block 21 is slidably connected to the inside of the through hole 22. The movement of the plug block 21 is facilitated by providing the through hole 22. A through hole 230 is provided on the upper part of the wastewater regulating tank 1, and the cross bar 20 is slidably connected to the inside of the through hole 230. The movement of the cross bar 20 is facilitated by providing the through hole 230. A slot 23 is provided inside the sand and gravel filter plate 15, and the plug block 21 is slidably connected to the inside of the slot 23, thereby improving the stability of the installation of the sand and gravel filter plate 15.

[0032] Specifically, when the sand and gravel filter plate 15 needs to be replaced, the operator first needs to move the cross bar 20 outward. The movement of the cross bar 20 will drive the slider 19 fixed at the bottom to move inside the installation cavity 16. When the slider 19 moves, the plug 21 fixed on its top will also move synchronously. During the movement of the slider 19, the telescopic rod 17 connected to its bottom is squeezed by the thrust from the slider 19, causing the telescopic rod 17 to produce axial deformation under the force state. At the same time, as the telescopic rod 17 contracts, the spring 18 sleeved on the outside thereof will also be compressed, gradually accumulating elastic potential energy. When the plug 21 is completely out of the slot 23, the sand and gravel filter plate 15 loses its limit, and the sand and gravel filter plate 15 can be smoothly taken out from the wastewater regulating tank 1. The operator can perform necessary cleaning on the removed filter plate to remove impurities or blockages attached to the surface to ensure that its filtering performance is restored. When reinstalling the sand and gravel filter plate 15, the operator needs to accurately insert it into the wastewater regulating tank 1 so that it is in the specified installation position. Then, by loosening the cross bar 20, the slider 19 is reset under the reaction force of the spring 18, thereby driving the insert block 21 to be reinserted into the slot 23. At this time, the insert block 21 firmly fixes the filter plate in the correct position to ensure its stability and reliability during the wastewater treatment process, thereby realizing the rapid disassembly and assembly of the sand and gravel filter plate 15, greatly simplifying the complexity of the replacement operation, avoiding cumbersome manual adjustment steps, and improving the wastewater treatment efficiency.

[0033] Reference Figure 2-Figure 5The sludge scraping assembly includes an electric push rod 24, which is fixedly connected to both sides of the outside of the wastewater regulating tank 1. The output ends of the two electric push rods 24 are fixedly connected with a moving plate 25. The outside of the moving plate 25 is fixedly connected with a connecting rod 26. The connecting rod 26 is slidably connected to the inside of the wastewater regulating tank 1. A scraper 27 is fixedly connected to the bottom of the connecting rod 26. The scraper 27 is provided to facilitate the scraping of the sludge inside the sedimentation tank. The scraper 27 is slidably connected to the inside of the sedimentation tank 10 and the sedimentation tank 2 13. The outsides of the sedimentation tank 10 and the sedimentation tank 2 13 are fixedly connected with a sewage outlet 29. The sewage outlet 29 is provided to facilitate the discharge of sludge. The insides of the sedimentation tank 10 and the sedimentation tank 2 13 are fixedly connected with a guide rod 28. The two scrapers 27 are slidably connected to the outside of the two guide rods 28. The guide rods 28 are provided to guide the scrapers 27.

[0034] Specifically, when scraping the sludge inside the sedimentation tank, first start the electric push rod 24. After the electric push rod 24 is energized, the moving plate 25 fixed at the output end is driven to push smoothly. The movement of the moving plate 25 will drive the connecting rod 26 fixed on its outer rear side to move synchronously. The displacement of the connecting rod 26 further drives the scraper 27 installed at its bottom to move at the bottom of the sedimentation tank. During the movement of the scraper 27, it fits tightly with the sludge surface at the bottom of the sedimentation tank, and pushes the accumulated sludge to the predetermined sewage outlet 29 position through the thrust. The moving range of the scraper 27 can cover most of the bottom area of ​​the sedimentation tank. The precisely designed moving trajectory ensures that the sludge can be efficiently concentrated to the sewage outlet 29, thereby realizing rapid discharge. The sewage outlet 29 quickly discharges the pushed sludge out of the tank through the connected sewage pipe, reducing the accumulation of sludge at the bottom of the sedimentation tank, reducing the impact of long-term accumulation of sludge on the operation of the sedimentation tank, and greatly shortening the cleaning and discharge time, thereby improving the overall operation efficiency and processing capacity of the sedimentation tank.

[0035] Working principle: when the sand and gravel filter plate 15 needs to be replaced, first, the cross bar 20 is moved, and the cross bar 20 moves with the slider 19 fixed at the bottom to move inside the installation cavity 16, and when the slider 19 moves, the plug block 21 fixed at the top moves synchronously, and at the same time, when the slider 19 moves, the telescopic rod 17 fixed at the bottom is squeezed, so that the telescopic rod 17 is deformed under force, and at the same time, when the telescopic rod 17 contracts, the spring 18 set on the outside is squeezed, so that the spring 18 is deformed under force, and then, when the plug block 21 is separated from the inside of the slot 23, the sand and gravel filter plate 15 can be taken out from the inside of the wastewater regulating tank 1 for cleaning or replacement. During installation, the sand and gravel filter plate 15 is inserted into the inside of the wastewater regulating tank 1, and then, the cross bar 20 is loosened, and under the reaction force of the spring 18, the plug block 21 is inserted into the inside of the slot 23, so that the sand and gravel filter plate 15 is easy to replace, the operation is simple, time-saving and labor-saving, and the wastewater treatment efficiency is improved;

[0036] When scraping the sludge inside the sedimentation tank, by starting the electric push rod 24, the electric push rod 24 moves with the movable plate 25 fixed at the output end, and the movable plate 25 moves with the connecting rod 26 fixed on the external rear side, and the connecting rod 26 moves with the scraper 27 fixed at the bottom to move inside the sedimentation tank. The sludge is pushed to the position of the sewage outlet 29 through the movement of the scraper 27, which makes it easy to push the sludge inside the sedimentation tank to the position of the sewage outlet 29, can effectively reduce the accumulation of sludge at the bottom of the sedimentation tank, reduce the time required for discharge, and improve the overall operation efficiency of the sedimentation tank. The staff can check whether the water quality meets the standards according to actual needs. If it does not meet the standards, the water quality can be filtered for a second time by ultrafiltration, which is convenient for the staff to use the water source for the second time.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. 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 heavy metal-containing general cleaning wastewater recycling device, comprising a wastewater regulating tank (1), characterized in that: A treatment tank 1 (6) is arranged on the left side inside the wastewater regulating tank (1), a treatment tank 2 (7) is arranged below the treatment tank 1 (6), a treatment tank 3 (8) is arranged outside the treatment tank 1 (6) and the treatment tank 2 (7), a treatment tank 4 (9) is arranged outside the treatment tank 3 (8), a sedimentation tank 1 (10) is arranged outside the treatment tank 4 (9), a treatment tank 5 (11) is arranged below the sedimentation tank 1 (10), and a treatment tank 5 (11) is arranged below the treatment tank 5 (11). The treatment tank (1) comprises a treatment tank (6) (12), the treatment tank (11) and the treatment tank (12) are provided with a sedimentation tank (2) (13) outside, the sedimentation tank (13) is provided with a treatment tank (7) (14) outside, the sedimentation tank (1) and the sedimentation tank (2) are both provided with a sludge scraping assembly inside, a sand and gravel filter plate (15) is inserted at the bottom of the wastewater regulating tank (1), the wastewater regulating tank (1) is provided with an installation cavity (16) at the bottom, and a replacement assembly is provided inside the installation cavity (16); The replacement component comprises a telescopic rod (17), the telescopic rod (17) being fixedly connected to the interior of the installation cavity (16), a slider (19) being fixedly connected to the top of the telescopic rod (17), a spring (18) being sleeved on the outside of the telescopic rod (17), a cross bar (20) being fixedly connected to the upper part of the slider (19), and an insert block (21) being fixedly connected to the outer top of the slider (19).

2. A heavy metal-containing general cleaning wastewater recycling device according to claim 1, characterized in that: The sludge scraping assembly comprises an electric push rod (24), the electric push rod (24) being fixedly connected to both sides of the outside of the wastewater regulating tank (1), the output ends of the two electric push rods (24) being fixedly connected to movable plates (25), the outside of the movable plates (25) being fixedly connected to connecting rods (26), the connecting rods (26) being slidably connected to the inside of the wastewater regulating tank (1), the bottom of the connecting rod (26) being fixedly connected to a scraper (27), the scraper (27) being slidably connected to the inside of the first sedimentation tank (10) and the second sedimentation tank (13), and the outsides of the first sedimentation tank (10) and the second sedimentation tank (13) being fixedly connected to sewage outlets (29).

3. A heavy metal-containing general cleaning wastewater recycling device according to claim 1, characterized in that: A through hole one (22) is provided inside the wastewater regulating tank (1), and the plug block (21) is slidably connected inside the through hole one (22). A through hole two (30) is provided on the upper part of the wastewater regulating tank (1), and the cross bar (20) is slidably connected inside the through hole two (30).

4. A heavy metal-containing general cleaning wastewater recycling device according to claim 1, characterized in that: A slot (23) is provided inside the sand and gravel filter plate (15), and the insert block (21) is slidably connected inside the slot (23).

5. A heavy metal-containing general cleaning wastewater recycling device according to claim 1, characterized in that: An air inlet pipe (31) is installed inside the treatment pool 1 (6) and the treatment pool 7 (14), and an air outlet (32) is fixedly connected to the bottom of the air inlet pipe (31).

6. A heavy metal-containing general cleaning wastewater recycling device according to claim 2, characterized in that: The first sedimentation tank (10) and the second sedimentation tank (13) are both fixedly connected with guide rods (28) inside, and the two scrapers (27) are slidably connected to the outside of the two guide rods (28).

7. The heavy metal-containing general cleaning wastewater recycling device according to claim 1 is characterized by: The upper parts of the treatment pool 1 (6), the treatment pool 2 (7), the treatment pool 3 (8), the treatment pool 4 (9), the treatment pool 5 (11), the treatment pool 6 (12) and the treatment pool 7 (14) are all fixedly connected with a dosing port (5).

8. The heavy metal-containing general cleaning wastewater recycling device according to claim 1 is characterized by: The wastewater regulating tank (1) is fixedly connected to a water inlet (2) on the left side outside, the treatment tank seven (14) is fixedly connected to a water outlet (3) on the left side outside, and a movable vertical ladder (4) is arranged on the rear side outside the wastewater regulating tank (1).

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