Water return system for improving water quality

Abstract

The utility model discloses a water return system for improving water quality, which comprises a pretreatment tank, a clarification tank and a sedimentation tank, a water return device is mounted on one side of the pretreatment tank, a water inlet pipe is mounted between the water return device and the pretreatment tank, a sand pump is mounted in the middle of the water inlet pipe, an upper water outlet pipe is mounted between the water return device and the clarification tank, and the upper water outlet pipe is positioned in the middle of the water return device. The sludge treatment system is provided with the water return device, after being quickly layered downwards through gravity based on the water return device, the sludge is matched with a water return system for respective treatment, so that the treatment efficiency of the whole system is improved, screened sludge enters the sedimentation tank, a water source enters the clarification tank, and the sludge and the water return device form a circulating treatment structure according to the characteristics of the clarification tank, so that shutdown treatment is not needed; the water quality of the whole water source after treatment is higher, the efficiency is higher, and secondary pollution does not need to be worried about.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment, and in particular to a water return system for improving water quality. Background Technology

[0002] In the mining industry, water quality improvement systems aim to treat wastewater generated during mining operations (such as mine water, mineral processing wastewater, tailings water, etc.) to meet reuse standards and achieve water resource recycling. These systems typically include pretreatment systems, pollutant removal systems, filtration systems, and advanced treatment systems. In conventional processes, improvements are usually made to the pretreatment or advanced treatment systems to increase separation efficiency at the head of the wastewater treatment process or to enhance filtration quality at the tail end of the process.

[0003] However, in existing technologies, pretreatment processes typically employ bar screens or sand pits. Therefore, when dealing with ore-mixed sludge, the bar screens accumulate significant impurities. This not only requires manual intervention and shutdown, but the sludge also falls back into the treated ore-mixed sludge during the treatment process, causing further contamination and degrading the water quality. Therefore, to address these issues, a water return system for improving water quality is provided. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a water return system to improve water quality. It mainly solves the technical problem that the impurity removal efficiency is low in the pretreatment process of mine wastewater and that the treatment process can also lead to secondary pollution of water sources.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model relates to a water return system for improving water quality, comprising a pretreatment tank, a clarification tank, and a sedimentation tank. A water return device is installed on one side of the pretreatment tank. An inlet pipe is installed between the water return device and the pretreatment tank, and a sand pump is installed in the middle of the inlet pipe. An upper outlet pipe is installed between the water return device and the clarification tank, with the upper outlet pipe located in the middle of the water return device. A lower outlet pipe is installed between the water return device and the sedimentation tank, with the lower outlet pipe located at the bottom of the water return device. A return pipe is installed between the bottom of the clarification tank and the inlet pipe. A drain pipe is also installed on the upper part of the clarification tank. The water return device is used to screen the pretreatment tank, the sedimentation tank is used to treat sludge, the drain pipe is used to drain water from the upper part of the clarification tank, and the return pipe is used to return sandy water.

[0007] Preferably, the water return device has a diversion pipe installed at the top and a baffle plate installed at the bottom. The upper part of the diversion pipe is connected to the inlet pipe, and a funnel plate is installed at the bottom of the diversion pipe. An upper cavity is provided between the funnel plate and the baffle plate, and a lower cavity is provided below the baffle plate. A grid is provided on the edge of the funnel plate, and a through rod is installed at the bottom of the funnel plate, extending into the lower cavity.

[0008] Preferably, the upper water outlet pipe is connected to the upper cavity, and the lower water outlet pipe is connected to the lower cavity.

[0009] Preferably, a fixing plate is installed at the bottom of the water inlet pipe, and the fixing plate is fixedly connected to the bent part of the diversion pipe. An agitator shaft is installed at the bottom of the fixing plate, and the agitator shaft extends from the inside of the through rod to the inside of the lower cavity. A drive motor is installed at the bottom of the return water device, and the drive motor and the agitator shaft are connected by transmission.

[0010] Preferably, a sealing ring is installed on the upper part of the funnel plate, the diverting pipe passes through the sealing ring to the upper part of the grid, and the bottom of the diverting pipe is perpendicular to the grid.

[0011] Preferably, the surface of the closed ring is provided with a groove, and the position of the groove corresponds to the grid mesh.

[0012] Preferably, the closed ring is fixedly connected to the water return device and the funnel plate respectively, and the grid includes grid rods and mesh.

[0013] Preferably, the bottom of the lower cavity is provided with an inclined plate, and the inclined plate faces the lower water outlet pipe.

[0014] Preferably, the number of the diversion pipes is the same as the number of the slots, and the number of the diversion pipes is at least two.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This utility model is equipped with a water return device. Based on the water return device, the water is quickly separated into layers by gravity and then processed separately in conjunction with the water return system, which improves the overall system processing efficiency. The sludge after screening enters the sedimentation tank, and the water source enters the clarification tank. According to the characteristics of the clarification tank, it forms a circulation treatment structure with the water return device. Not only does it eliminate the need to stop the machine for treatment, but it also makes the overall water source have higher water quality after treatment, and the efficiency is faster. There is no need to worry about secondary pollution. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1This is a schematic diagram of the overall system structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the water return device structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the funnel-shaped disc structure of this utility model;

[0021] In the diagram: 1. Pretreatment tank; 2. Clarification tank; 3. Sedimentation tank; 4. Water return device; 5. Inlet pipe; 6. Sand pump; 7. Upper outlet pipe; 8. Lower outlet pipe; 9. Return pipe; 10. Drainage pipe; 11. Diversion pipe; 12. Baffle plate; 13. Funnel plate; 14. Upper chamber; 15. Lower chamber; 16. Grille; 17. Through rod; 18. Fixing plate; 19. Agitator shaft; 20. Drive motor; 21. Sealing ring; 22. Groove opening. Detailed Implementation

[0022] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0023] In the attached diagram, all identical reference numerals refer to the same components.

[0024] Example 1

[0025] like Figure 1 As shown, this utility model provides a water return system for improving water quality, including a pretreatment tank 1, a clarifier 2, and a sedimentation tank 3. A water return device 4 is installed on one side of the pretreatment tank 1. An inlet pipe 5 is installed between the water return device 4 and the pretreatment tank 1. A sand pump 6 is installed in the middle of the inlet pipe 5. An upper outlet pipe 7 is installed between the water return device 4 and the clarifier 2, and the upper outlet pipe 7 is located in the middle of the water return device 4. A lower outlet pipe 8 is installed between the water return device 4 and the sedimentation tank 3, and the lower outlet pipe 8 is located at the lower part of the water return device 4. A water return pipe 9 is installed between the bottom of the clarifier 2 and the inlet pipe 5. A drain pipe 10 is also installed on the upper part of the clarifier 2. The water return device 4 is used to screen the pretreatment tank 1, the sedimentation tank 3 is used to treat sludge, the drain pipe 10 is used to drain water from the upper part of the clarifier 2, and the water return pipe 9 is used to return sandy water.

[0026] Specifically, the overall system mainly adjusts the pH value of the tailings water resources that have been pre-treated in the pretreatment tank 1 and treats them centrally. Then, it is pumped into the return water device 4 by the sand pump 6. The return water device 4, in conjunction with gravity, forms an initial sieve, which causes the upper and lower layers to separate. Only the upper layer of sieved mineral water enters the clarification tank 2, while the lower layer of large particles or aggregated sludge mainly enters the sedimentation tank 3 for further sedimentation treatment.

[0027] After initial clarification in clarification tank 2, the relatively clear water on its surface can enter the next stage of deep treatment system, where it will be filtered a second time by activated carbon adsorption or ion exchange, as well as membrane treatment technology. This allows the filtered water to be reused for cooling circulating water or flushing toilets.

[0028] The water source at the bottom of the clarifier 2 will also form an agglomeration effect after long-term sedimentation. Fine slag particles will agglomerate with sludge and eventually be pumped back into the return water device 4 through the return water pipe 9, so that the agglomerated sludge clumps can be stratified and enter the lower outlet water pipe 8 to achieve the circulation of the whole system.

[0029] Its overall structure is simple. It mainly separates the water source from the tailings and the fine minerals, and puts the minerals and sludge into the sedimentation tank 3 for centralized treatment. The water source that is easier to separate is directly discharged into the deep treatment system through the drain pipe 10, which can improve the overall water quality and increase the water return efficiency. The water source inside the clarification tank 2 can also form a cycle after a certain period of time, which not only allows the fine mineral particles to enter the sedimentation tank 3, but also further separates the higher quality water source.

[0030] Example 2

[0031] The difference from Example 1 is that, as Figure 2-3 As shown, a diversion pipe 11 is installed on the upper part of the water return device 4, and a baffle plate 12 is installed on the lower part. The upper part of the diversion pipe 11 is connected to the inlet pipe 5. A funnel plate 13 is installed at the bottom of the diversion pipe 11. An upper cavity 14 is provided between the funnel plate 13 and the baffle plate 12. A lower cavity 15 is provided below the baffle plate 12. A grid 16 is provided on the edge of the funnel plate 13. A through rod 17 is installed at the bottom of the funnel plate 13 and extends into the lower cavity 15.

[0032] The upper water outlet pipe 7 is connected to the upper chamber 14, and the lower water outlet pipe 8 is connected to the lower chamber 15.

[0033] A fixing plate 18 is installed at the bottom of the water inlet pipe 5, and the fixing plate 18 is fixedly connected to the bent part of the diversion pipe 11. An agitator 19 is installed at the bottom of the fixing plate 18. The agitator 19 extends from the inside of the through rod 17 to the inside of the lower chamber 15. A drive motor 20 is installed at the bottom of the return water device 4. The drive motor 20 and the agitator 19 are connected by transmission.

[0034] A sealing ring 21 is installed on the upper part of the funnel plate 13, and the diversion pipe 11 passes through the sealing ring 21 to the upper part of the grid 16. The bottom of the diversion pipe 11 is perpendicular to the grid 16.

[0035] The surface of the closed ring 21 is provided with a groove 22, and the position of the groove 22 corresponds to the grid mesh 16.

[0036] The closed ring 21 is fixedly connected to the return water device 4 and the funnel plate 13 respectively, and the bar screen 16 includes bar bars and mesh.

[0037] An inclined plate is provided at the bottom of the lower cavity 15, and the inclined plate faces the lower water outlet pipe 8.

[0038] The number of diversion pipes 11 is the same as the number of slots 22, and the number of diversion pipes 11 is at least two.

[0039] Specifically, the overall structure is based on the water inlet pipe 5, which discharges tailings water into the water return device 4 from the top. Since the water inlet pipe 5 is directly connected to the diversion pipe 11, the water source will be divided into multiple pipes to flow separately, so as to reduce the water flow of a single pipe and reduce the amount of water that a single pipe needs to process.

[0040] Therefore, the grid 16 on the funnel plate 13 can directly discharge the filtered water downwards into the upper chamber 14, while the screened mineral mixture sludge will move along the inclined surface of the funnel plate 13 towards the through rod 17, and move downwards to the lower chamber 15 along the spiral structure at the stirring shaft 19. The upper chamber 14 discharges the water to the clarification tank 2 through the upper outlet pipe 7, and the lower chamber 15 discharges the mixed mineral sludge into the sedimentation tank 3 through the lower outlet pipe 8, so as to achieve stratified treatment.

[0041] Specifically, the surface of the funnel plate 13 is also provided with a sealing ring 21, which separates the water source discharged from the diversion pipe 11 to the outside, so that even if the water source discharged from the diversion pipe 11 splashes, it is controlled between the sealing ring 21 and the inner wall of the return water device 4, thereby reducing the splash range of the water flow; and the grid 16 is provided with inclined grid rods and grids, so that the sludge can slide from the slot 22 to the vicinity of the through rod 17 along the grid with a large degree of inclination; when the top of the through rod 17 is blocked, the stirring shaft 19 can slowly stir, so that the sludge can enter the lower chamber 15 and mix with a small amount of water source and move to the vicinity of the lower outlet pipe 8 on the inclined surface at the bottom of the lower chamber 15, so as to achieve the effect of immediate discharge.

[0042] Specifically, the fixing plate 18 at the lower part of the water inlet pipe 5 can not only fix the position of the stirring shaft 19 from top to bottom, but also be installed with multiple branch pipes 11 to prevent the water inlet pipe 5 from vibrating when it goes down from the top.

[0043] In summary, this utility model is equipped with a water return device. Based on the fact that the water return device rapidly separates the water into layers by gravity, and then works with the water return system to process the water separately, the overall system processing efficiency is improved. The sludge after screening enters the sedimentation tank, and the water source enters the clarification tank. According to the characteristics of the clarification tank, it forms a circulation treatment structure with the water return device, so that the overall water source has higher water quality after preliminary treatment and is more efficient.

[0044] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A water return system for improving water quality, comprising a pretreatment tank (1), a clarification tank (2), and a sedimentation tank (3), characterized in that, A return water device (4) is installed on one side of the pretreatment tank (1). An inlet pipe (5) is installed between the return water device (4) and the pretreatment tank (1). A sand pump (6) is installed in the middle of the inlet pipe (5). An upper outlet pipe (7) is installed between the return water device (4) and the clarifier (2), and the upper outlet pipe (7) is located in the middle of the return water device (4). A lower outlet pipe (8) is installed between the return water device (4) and the sedimentation tank (3), and the lower outlet pipe (8) is located at the lower part of the return water device (4). A return water pipe (9) is installed between the bottom of the clarifier (2) and the inlet pipe (5). A drain pipe (10) is also installed on the upper part of the clarifier (2). The return water device (4) is used to screen the pretreatment tank (1), the sedimentation tank (3) is used to treat sludge, the drain pipe (10) is used to drain water from the top of the clarification tank (2), and the return water pipe (9) is used to return sandy water.

2. The water return system for improving water quality according to claim 1, characterized in that, The water return device (4) has a diversion pipe (11) installed on the upper part and a baffle plate (12) installed on the lower part. The upper part of the diversion pipe (11) is connected to the inlet pipe (5). A funnel plate (13) is installed at the bottom of the diversion pipe (11). An upper cavity (14) is provided between the funnel plate (13) and the baffle plate (12). A lower cavity (15) is provided at the bottom of the baffle plate (12). A grid mesh (16) is provided on the edge of the funnel plate (13). A through rod (17) is installed at the bottom of the funnel plate (13) and extends into the lower cavity (15).

3. A water return system for improving water quality according to claim 2, characterized in that, The upper water outlet pipe (7) is connected to the upper cavity (14), and the lower water outlet pipe (8) is connected to the lower cavity (15).

4. A water return system for improving water quality according to claim 3, characterized in that, A fixing plate (18) is installed at the bottom of the water inlet pipe (5), and the fixing plate (18) and the bent part of the diversion pipe (11) are fixedly connected. A stirring shaft (19) is installed at the bottom of the fixing plate (18), and the stirring shaft (19) extends from the inside of the through rod (17) to the inside of the lower cavity (15). A drive motor (20) is installed at the bottom of the water return device (4), and the drive motor (20) and the stirring shaft (19) are connected by transmission.

5. A water return system for improving water quality according to claim 4, characterized in that, A sealing ring (21) is installed on the upper part of the funnel plate (13), and the diversion pipe (11) passes through the sealing ring (21) to the upper part of the grid (16). The bottom of the diversion pipe (11) is perpendicular to the grid (16).

6. A water return system for improving water quality according to claim 5, characterized in that, The surface of the closed ring (21) is provided with a groove (22), and the position of the groove (22) corresponds to the grid mesh (16).

7. A water return system for improving water quality according to claim 6, characterized in that, The closed ring (21) is fixedly connected to the return water device (4) and the funnel plate (13) respectively, and the grid (16) includes grid rods and grid mesh.

8. A water return system for improving water quality according to claim 7, characterized in that, The bottom of the lower cavity (15) is provided with an inclined plate, and the inclined plate faces the lower water outlet pipe (8).

9. A water return system for improving water quality according to claim 8, characterized in that, The number of the diversion pipes (11) is the same as the number of the slots (22), and the number of the diversion pipes (11) is at least two.

Images