Drinking water defluorination and reclaimed water recycling equipment

Abstract

The utility model relates to the technical field of water treatment equipment, in particular to drinking water defluorination and reclaimed water recycling equipment, which is characterized in that a regeneration stirring tank is arranged outside a defluorination tank, a regeneration part and a precipitation part are arranged in the regeneration stirring tank, a partition plate is arranged between the regeneration part and the precipitation part, and the regeneration part and the precipitation part are separated by the partition plate; the outer side wall of the regeneration stirring tank is provided with a circulating pipeline used for communicating the regeneration part with the precipitation part, the exterior of the regeneration stirring tank is provided with a regeneration pump used for communicating the regeneration part with the defluorination tank, and after the defluorination tank completes one-time filler regeneration, pressure is applied to the interior of the defluorination tank under the pressurization effect of the regeneration pump, so that regenerated water flows into the precipitation part, and the regenerated water flows into the defluorination tank; recycled water is a sodium hydroxide solution, calcium hydroxide is added into the recycled water and then stirred, refined precipitation is carried out after calcium hydroxide is added, the recycled water on the upper layer is recycled after precipitation, and the recycled water is reused in the next regeneration process, so that the purpose of improving the utilization rate of the recycled water is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment equipment, in particular to equipment for removing fluorine from drinking water and reusing recycled water. Background Art

[0002] Long-term drinking of high-fluoride water is very harmful to the body, causing osteoporosis, bone deformation, and even paralysis, and loss of ability to work. Defluoridation of drinking water is an urgent drinking water safety issue that needs to be solved. When solving the drinking water safety problem in high-fluoride water areas, some technical bottlenecks and promotion resistance are also encountered. Drinking water defluoridation equipment uses filter material adsorption and regeneration to remove fluoride. Since the filter material in the defluoridation equipment needs to be regenerated with a certain concentration of sodium hydroxide solution after reaching the adsorption capacity, the regenerated wastewater contains a large amount of unused sodium hydroxide, and direct discharge will have a certain impact on the surrounding environment. This problem has been plaguing most small and medium-sized water plants with imperfect infrastructure.

[0003] Special treatment of recycled water requires a large investment of cost and occupies a large area of ​​land. Therefore, it is necessary to develop a device with high regeneration efficiency and the ability to simultaneously recycle and reuse recycled water, and to simultaneously defluorinate, regenerate, and recycle recycled water from drinking water, so as to reduce wastewater discharge without affecting the defluorination operation. Utility Model Content

[0004] In order to solve the above problems, the embodiment of the utility model provides a device which utilizes an integrated device to complete the defluorination operation of drinking water, regenerate the defluorination filter material and recycle the regenerated water.

[0005] In order to achieve the above-mentioned purpose, the embodiment of the utility model specifically adopts the following technical scheme: a drinking water defluorination and reclaimed water reuse equipment, including a defluorination tank, a regeneration stirring tank is arranged outside the defluorination tank, a regeneration part and a sedimentation part are arranged inside the regeneration stirring tank, a partition is arranged between the regeneration part and the sedimentation part, a circulation pipeline for connecting the regeneration part and the sedimentation part is arranged on the outer wall of the regeneration stirring tank, and a regeneration pump for connecting the regeneration part and the defluorination tank is arranged outside the regeneration stirring tank.

[0006] As a further improvement of the above technical solution:

[0007] A feeding port 1 is arranged on one side of the upper part of the regeneration part, a circulating water inlet connected with the circulating pipeline is arranged on the other side, and a sewage discharge pipe is arranged on the lower part of the regeneration part.

[0008] A second feeding port is arranged on the upper part of the sedimentation part, an agitator is arranged inside the sedimentation part, and a circulating water outlet connected with a circulating pipeline is arranged on the side wall of the sedimentation part.

[0009] A clamping boss for mounting a partition is arranged on the inner side wall of the regeneration stirring tank, the circulating water outlet is located above the clamping boss, and an extension plate connected to the clamping boss is arranged on the edge of the partition.

[0010] A sedimentation bin for placing sediment is arranged in the middle of the partition, the sedimentation bin is in a frustum shape and its diameter gradually decreases from top to bottom, and a slag discharge pipe is arranged at the lower part of the sedimentation bin.

[0011] The agitator comprises a driving motor installed above the sedimentation part, a transmission rod connected to the driving motor is arranged in the sedimentation part, and a stirring blade located above the partition is arranged at the lower part of the transmission rod.

[0012] The upper part of the defluorination tank is provided with a purified water outlet, and the lower part is provided with a raw water inlet. The outside of the purified water outlet is connected to an air compressor.

[0013] The beneficial effects of the embodiments of the utility model are as follows: 1. The drinking water defluorination and regeneration water reuse equipment is provided with a regeneration stirring tank outside the defluorination tank, a regeneration part and a sedimentation part are arranged in the regeneration stirring tank, a partition is arranged between the regeneration part and the sedimentation part, and the regeneration part and the sedimentation part are separated by the partition, a circulation pipe for connecting the regeneration part and the sedimentation part is arranged on the outer wall of the regeneration stirring tank, and a regeneration pump for connecting the regeneration part and the defluorination tank is arranged outside the regeneration stirring tank. After the defluorination tank completes a filler regeneration, the regeneration pump is used to apply pressure to the defluorination tank by the boosting effect of the regeneration pump, so that the regenerated water flows into the sedimentation part. The regenerated water is a sodium hydroxide solution. After adding calcium hydroxide to the regenerated water, it is stirred, and after adding calcium hydroxide, it is finely precipitated. After precipitation, the upper layer of regenerated water is recovered and recycled, and reused in the next regeneration process, so as to achieve the purpose of improving the utilization rate of regenerated water.

[0014] The integrated regeneration section and sedimentation section can effectively reduce the space occupied by recycled water treatment, while also reducing investment. The regeneration operation can be completed in the intervals between defluorination operations, and the recycled water can be recycled at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the regeneration stirring tank in the utility model;

[0017] Figure 3 Cross-section of a regeneration mixing tank.

[0018] In the figure: 1. Defluorination tank; 2. Regeneration stirring tank; 3. Regeneration section; 4. Sedimentation section; 5. Partition; 6. Circulation pipeline; 7. Regeneration pump; 8. Feeding port 1; 9. Circulation water inlet; 10. Drain pipe; 11. Feeding port 2; 12. Circulation water outlet; 13. Snap-on boss; 14. Extension plate; 15. Sedimentation bin; 16. Drive motor; 17. Transmission rod; 18. Stirring blade; 19. Purified water outlet; 20. Raw water inlet; 21. Air compressor; 22. Slag discharge pipeline. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0020] like Figure 1 As shown, the drinking water defluorination and regeneration water reuse equipment of this embodiment includes a defluorination tank 1, a regeneration stirring tank 2 is provided outside the defluorination tank 1, a regeneration part 3 and a sedimentation part 4 are provided inside the regeneration stirring tank 2, a partition 5 is provided between the regeneration part 3 and the sedimentation part 4, the regeneration part 3 and the sedimentation part 4 are separated by the partition 5, a circulation pipe 6 for connecting the regeneration part 3 and the sedimentation part 4 is provided on the outer wall of the regeneration stirring tank 2, and a regeneration pump 7 for connecting the regeneration part 3 and the defluorination tank 1 is provided outside the regeneration stirring tank 2. After the defluorination tank 1 completes a filler regeneration, the regeneration pump 7 is used to apply pressure to the defluorination tank 1 by the boosting effect of the regeneration pump 7, so that the regenerated water flows into the sedimentation part 4. The regenerated water is a sodium hydroxide solution. After adding calcium hydroxide to the regenerated water, it is stirred, and after adding calcium hydroxide, it is finely precipitated. After precipitation, the upper layer of regenerated water is recovered and recycled, and reused in the next regeneration process, so as to achieve the purpose of improving the utilization rate of regenerated water.

[0021] A feeding port 8 is provided on one side of the upper part of the regeneration part 3 for adding sodium hydroxide and mixing with water to form regenerated water. A circulating water inlet 9 connected to the circulating pipe 6 is provided on the other side for recycling the regenerated water. A sewage pipe 10 is provided at the lower part of the regeneration part 3.

[0022] A feeding port 11 is provided at the upper portion of the sedimentation portion 4 for adding calcium hydroxide into the sedimentation portion 4. An agitator is provided inside the sedimentation portion 4 for stirring to facilitate full fusion of the calcium hydroxide and the recovered regenerated water. A circulating water outlet 12 connected to the circulating pipe 6 is provided on the side wall of the sedimentation portion 4 for outputting the treated regenerated water for reuse.

[0023] A snap-on boss 13 for mounting the partition 5 is provided on the inner wall of the regeneration mixing tank 2, and the circulating water outlet 12 is located above the snap-on boss 13. An extension plate 14 connected to the snap-on boss 13 is provided on the edge of the partition 5. The partition 5 is fixed by the connection between the extension plate 14 and the snap-on boss 13.

[0024] A sedimentation bin 15 for placing sediment is provided in the middle of the partition 5. The sedimentation bin 15 is in a cone shape and its diameter gradually decreases from top to bottom. The design of the sedimentation bin 15 is convenient for collecting and discharging the sediment. A slag discharge pipe 22 is provided at the lower part of the sedimentation bin 15. After sedimentation, the recycled water recovered in the upper layer is discharged through the circulating water outlet 12, and the impurities at the bottom of the sedimentation bin 15 are discharged through the slag discharge pipe 22.

[0025] The agitator includes a drive motor 16 installed above the sedimentation part 4, a transmission rod 17 connected to the drive motor 16 is provided in the sedimentation part 4, and a stirring blade 18 located above the partition 5 is provided at the lower part of the transmission rod 17. The stirring blade 18 is located above the partition 5, and while accelerating the rapid mixing of calcium hydroxide, it prevents the sediment in the sedimentation bin 15 from floating up due to stirring.

[0026] A purified water outlet 19 is provided at the top of the defluorination tank 1, a raw water inlet 20 is provided at the bottom of the defluorination tank 1, and an air compressor 21 is connected to the outside of the purified water outlet 19. The function of the air compressor 21 is to increase the pressure in the defluorination tank 1, to facilitate the recovery of recycled water or the discharge of flushing water, and to ensure that the defluorination tank 1 remains clean when not in operation.

[0027] Working principle / assembly process of this solution:

[0028] Step 1: The defluorination tank 1 performs normal defluorination operations. A filling bin is provided in the defluorination tank 1. After the raw water enters the defluorination tank 1 from the bottom of the defluorination tank, the raw water is defluorinated by using filter material in the filling bin. The defluorinated water is discharged from the top of the storage tank 1.

[0029] Step 2: After a period of defluorination operation, the filter material needs to be regenerated. At this time, sodium hydroxide and water are added into the regeneration part 3 through the feeding port 8 to generate a mixed solution of a certain concentration to form regenerated water. The regeneration water is injected from the bottom of the defluorination tank 1 by the regeneration pump, and then discharged from the upper part of the defluorination tank 1 and refluxed into the regeneration part 3. After this step is circulated for a certain period of time, the regeneration operation of the filter material is completed.

[0030] Step 3: After the regeneration operation is completed, the regenerated water remaining in the defluorination tank 1 and the regeneration part 3 needs to be collected and processed. First, the regenerated water in the regeneration part 3 is transported to the defluorination tank 1 through the regeneration pump 7, and then the transportation channel between the defluorination tank 1 and the regeneration part 3 is closed. The defluorination tank is pressurized by the air compressor 21, so that the regenerated water is transported to the sedimentation part 4 through the pipeline, and finally calcium hydroxide is added to the sedimentation part 4 through the feeding port 11 and stirred. After the sedimentation is completed, the sediment falls into the sedimentation bin 15.

[0031] Step 4: After the recycled water is recovered, the defluorination tank 1 needs to be flushed to flush out the powder in the filter material and the wastewater remaining from the regeneration operation. A flushing water pipe is inserted into the upper part of the defluorination tank 1 to flush the filter material inside the defluorination tank 1 and then the wastewater is discharged from the bottom.

[0032] Step 5: When the defluorination tank 1 needs to be regenerated for the second time, the regenerated water recovered in step 3 is transported to the regeneration part 3 through the circulating water outlet 12, and then a small amount of sodium hydroxide is added to the regeneration part 3. The concentration of the recovered regenerated water can be tested first, and then quantitative addition can be performed according to the use requirements. Since the regenerated water is recycled, the amount added in step 2 is much less, and the regenerated water after preparation is used for the second regeneration operation.

[0033] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0034] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0035] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0036] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A drinking water defluorination and recycled water reuse equipment, characterized by: The invention comprises a defluorination tank (1), wherein a regeneration stirring tank (2) is arranged outside the defluorination tank (1), a regeneration section (3) and a sedimentation section (4) are arranged inside the regeneration stirring tank (2), a partition (5) is arranged between the regeneration section (3) and the sedimentation section (4), a circulation pipe (6) for connecting the regeneration section (3) and the sedimentation section (4) is arranged on the outer wall of the regeneration stirring tank (2), and a regeneration pump (7) for connecting the regeneration section (3) and the defluorination tank (1) is arranged outside the regeneration stirring tank (2).

2. The drinking water defluorination and reclaimed water reuse equipment according to claim 1, characterized in that: A feeding port (8) is provided on one side of the upper part of the regeneration part (3), and a circulating water inlet (9) connected to the circulating pipe (6) is provided on the other side. A sewage discharge pipe (10) is provided on the lower part of the regeneration part (3).

3. The drinking water defluorination and reclaimed water reuse equipment according to claim 1, characterized in that: A second feeding port (11) is provided at the upper portion of the sedimentation portion (4), an agitator is provided inside the sedimentation portion (4), and a circulating water outlet (12) connected to a circulating pipe (6) is provided on the side wall of the sedimentation portion (4).

4. The drinking water defluorination and reclaimed water reuse equipment according to claim 3, characterized in that: A clamping boss (13) for mounting a partition (5) is provided on the inner side wall of the regeneration stirring tank (2), the circulating water outlet (12) is located above the clamping boss (13), and an extension plate (14) connected to the clamping boss (13) is provided on the edge of the partition (5).

5. The drinking water defluorination and reclaimed water reuse equipment according to claim 3, characterized in that: A sedimentation bin (15) for placing sediment is provided in the middle of the partition (5); the sedimentation bin (15) is in a frustum shape and its diameter gradually decreases from top to bottom; a slag discharge pipe (22) is provided at the bottom of the sedimentation bin (15).

6. The drinking water defluorination and reclaimed water reuse equipment according to claim 3, characterized in that: The stirrer comprises a driving motor (16) installed above the sedimentation part (4), a transmission rod (17) connected to the driving motor (16) is arranged in the sedimentation part (4), and a stirring blade (18) located above the partition (5) is arranged at the lower part of the transmission rod (17).

7. The drinking water defluorination and reclaimed water reuse equipment according to claim 1, characterized in that: The defluorination tank (1) is provided with a purified water outlet (19) at the top and a raw water inlet (20) at the bottom. The purified water outlet (19) is externally connected to an air compressor (21).

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