Gypsum slurry separation treatment device applied to an aeration tank

Abstract

The utility model relates to sewage treatment equipment technical field especially is applied to gypsum slurry separation treatment device of aerator, including slurry separation subassembly, the underflow mouth of slurry separation subassembly is connected with sludge collection tank, and the overflow mouth of slurry separation subassembly is connected with overflow tank, raw material acceleration subassembly, raw material acceleration subassembly output and slurry separation subassembly feed end connection, raw material acceleration subassembly feed end and sludge pipe connect, and raw material acceleration subassembly work water feed end passes through the conveyance pump subassembly and overflow tank middle part connection. The utility model is beneficial to the gypsum slurry separation of sludge fast, improves slurry separation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of sewage treatment equipment technology, and in particular to a gypsum slurry separation and treatment device applied to an aeration tank. Background Technology

[0002] The aeration tank is the core reaction structure in the activated sludge wastewater treatment process. By introducing air into the wastewater, it creates an environment where air and liquid are in full contact, providing sufficient oxygen for aerobic microorganisms in the wastewater. Simultaneously, it promotes uniform mixing and thorough contact between the activated sludge and the wastewater, allowing the microorganisms to decompose organic pollutants, nitrogen, phosphorus, and other nutrients in the wastewater through metabolic processes. In wastewater treatment, to achieve better treatment results, air is not only introduced into the aeration tank to provide sufficient oxygen and promote the growth and metabolism of microorganisms, but an appropriate amount of gypsum slurry is also added. The gypsum slurry is mainly added to adjust the pH of the wastewater, remove specific pollutants, or act as a flocculant to help suspended particles and impurities in the wastewater coagulate and settle. However, due to the relatively high density of gypsum slurry, it gradually settles at the bottom of the aeration tank, forming sediment. In continuous wastewater treatment, to maintain the normal operation and treatment efficiency of the aeration tank, the sludge at the bottom of the tank needs to be discharged periodically. However, since the gypsum slurry has already settled at the bottom, when the sludge is discharged, some gypsum slurry is inevitably discharged along with it. This not only wastes the gypsum slurry but also increases the complexity of subsequent sludge treatment.

[0003] In the subsequent treatment of sludge, to improve the utilization rate of gypsum slurry, it is necessary to separate the sludge from the water containing gypsum slurry. Currently, this separation mainly involves allowing the mixture of sludge and gypsum slurry to settle, and then extracting the supernatant after sedimentation. However, the sedimentation process takes a long time to complete, which not only reduces treatment efficiency but also increases treatment costs. Furthermore, the prolonged settling consumes a significant amount of time and space, further impacting the effectiveness of wastewater treatment and environmental quality.

[0004] Therefore, those skilled in the art are dedicated to developing a gypsum slurry separation and treatment device for aeration tanks, which facilitates the rapid separation of gypsum slurry from sludge and improves slurry separation efficiency. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a gypsum slurry separation and treatment device for aeration tank, which facilitates the rapid separation of gypsum slurry from sludge and improves slurry separation efficiency.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A gypsum slurry separation and treatment device for use in aeration tanks, comprising: A slurry separation component, wherein the underflow port of the slurry separation component is connected to a sludge collection tank, and the overflow port of the slurry separation component is connected to an overflow tank; The raw material acceleration component has its output end connected to the feed end of the slurry separation component, the feed end of the raw material acceleration component connected to the sludge pipe, and the working water feed end of the raw material acceleration component connected to the middle of the overflow tank through a conveying pump assembly.

[0007] The beneficial effects of adopting the above scheme are: after the raw material acceleration component accelerates the spraying of sludge and slurry, they are separated by the slurry separation component, which improves the separation efficiency of sludge and slurry. The bottom outlet of the slurry separation component is connected to the sludge collection box, which can collect and process the separated sludge in a concentrated manner. The overflow outlet is connected to the overflow box, which facilitates the collection of the upper clear liquid after separation. The working water inlet of the raw material acceleration component is connected to the middle of the overflow tank, enabling the recycling of the upper clear liquid, reducing the operating cost of the device, and improving the economy and practicality of the separation and treatment device.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the slurry separation assembly includes a cyclone separator, two of which are connected in parallel, and the underflow port of the cyclone separator is connected to the sludge collection box.

[0010] The beneficial effects of adopting the above-mentioned further scheme are: using cyclone separators improves separation efficiency and processing capacity, ensuring that gypsum slurry in sludge can be separated quickly and thoroughly, thereby better meeting the needs of sludge treatment in aeration tanks, and the two cyclone separators connected in parallel can achieve one in use and one on standby.

[0011] Furthermore, the raw material acceleration component includes a jet pump, the output end of which is connected to the raw material inlet end of the cyclone separator, and the feed end of which is connected to the sludge pipe.

[0012] The beneficial effects of adopting the above-mentioned further solution are: the jet pump can not only ensure that the sludge enters the separation component at a high speed and improve the separation efficiency, but also avoid the impact of impurities such as solid particles contained in the sludge on the transfer pump.

[0013] Furthermore, the delivery pump assembly includes an open centrifugal pump assembly, the input end of which is connected to the middle of the overflow tank, and the output end of which is connected to the working water inlet of the raw material acceleration assembly.

[0014] The beneficial effects of adopting the above-mentioned further solution are: the open centrifugal pump assembly can stably transport water from the middle of the overflow tank to the working water inlet of the raw material acceleration assembly, ensuring a stable supply of working water and facilitating the increase of sludge ejection speed.

[0015] Furthermore, a foam overflow port is provided at the upper end of the overflow box, and the foam overflow port is connected to the sludge collection box; A dilution pipe is also connected to the lower side of the overflow box, and the other end of the dilution pipe is connected to the sludge collection box. A control valve is installed on the dilution pipe.

[0016] The beneficial effects of adopting the above-mentioned further solution are: the upper foam in the overflow box flows to the sludge collection box through the foam overflow port, improving the purity of the upper clear liquid. When the sludge in the sludge collection box has a low water content and is not conducive to transportation, the control valve can be opened to allow the separated water in the overflow box to be introduced into the sludge collection box to mix with the sludge, which is beneficial for subsequent pumping of sludge.

[0017] Furthermore, the sludge collection box is also connected to a sludge dewatering device.

[0018] The beneficial effect of adopting the above-mentioned further solution is that the sludge dewatering device is used to further dewater the sludge.

[0019] Furthermore, the sludge dewatering device includes A first dehydration belt assembly and a second dehydration belt assembly are both mounted on a frame and are arranged opposite to each other. A feeding assembly is mounted on the frame and its output end is located above the first dewatering belt assembly; A squeeze roller assembly, which is mounted on the frame and is used to squeeze and dewater the sludge between the first dewatering belt assembly and the second dewatering belt assembly.

[0020] The beneficial effects of adopting the above-mentioned further scheme are: the first dewatering belt assembly and the second dewatering belt assembly are arranged opposite to each other, and the sludge is squeezed and dewatered by the feeding assembly and the extrusion roller assembly, so that the sludge reaches a low moisture content, while facilitating the automatic feeding and discharge of sludge.

[0021] Furthermore, the first dewatering belt assembly includes a first dewatering belt, which is sleeved on a first roller assembly. The first roller assembly is mounted on the frame and connected to a first power assembly. A first tensioning assembly is also provided on the first dewatering belt.

[0022] The beneficial effects of adopting the above-mentioned further solution are: the first roller assembly provides support and drive for the operation of the first dewatering belt, and the first power assembly enables the first dewatering belt to operate stably and continuously; The first tensioning component prevents the first dehydration belt from loosening or deviating during operation, ensuring a continuous and smooth dehydration process.

[0023] Furthermore, the second dewatering belt assembly includes a second dewatering belt, which is sleeved on the second roller assembly. The second roller assembly is mounted on the frame and connected to a second power assembly. A second tensioning assembly is also provided on the second dewatering belt.

[0024] The beneficial effects of adopting the above-mentioned further solution are: the second roller assembly provides support and drive for the operation of the second dewatering belt, and the second power assembly enables the second dewatering belt to operate stably and continuously; The second tensioning component prevents the second dehydration belt from loosening or deviating during operation, ensuring a continuous and smooth dehydration process.

[0025] Furthermore, a cleaning water tank for cleaning the second dewatering belt is also installed on the frame.

[0026] The beneficial effect of adopting the above-mentioned further solution is that when the second dewatering belt passes through the cleaning water tank during operation, the impurities remaining in the second dewatering belt can be cleaned. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the planar structure of a gypsum slurry separation and treatment device applied to an aeration tank according to a specific embodiment of the present invention; Figure 2 This is a schematic diagram of the overflow box structure according to a specific embodiment of the present invention; Figure 3 This is a schematic diagram of the sludge dewatering device according to a specific embodiment of the present invention; Figure 4 This is a schematic diagram of the planar structure of a sludge dewatering device according to a specific embodiment of the present invention.

[0028] The attached diagram lists the components represented by each number as follows: 1. Slurry separation assembly; 2. Sludge collection tank; 3. Overflow tank; 4. Raw material acceleration assembly; 5. Conveying pump assembly; 6. Cyclone separator; 7. Jet pump; 8. Open centrifugal pump assembly; 9. Sludge pipe; 10. Foam overflow port; 11. Dilution pipe; 12. Control valve; 13. Sludge dewatering device; 14. First dewatering belt assembly; 15. Second dewatering belt assembly; 16. Frame; 17. Feeding assembly; 18. Extrusion roller assembly; 19. First dewatering belt; 20. First roller assembly; 21. First tensioning assembly; 22. Second dewatering belt; 23. Second roller assembly; 24. Second tensioning assembly; 25. Cleaning water tank. Detailed Implementation

[0029] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0030] In the description of this utility model, it should be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "circumferential", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the system or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a gypsum slurry separation and treatment device applied to an aeration tank includes a slurry separation component 1, a sludge collection box 2 connected to the underflow port of the slurry separation component 1, and an overflow box 3 connected to the overflow port of the slurry separation component 1. The raw material acceleration component 4 has its output end connected to the feed end of the slurry separation component 1, and its feed end connected to the sludge pipe 9. The working water feed end of the raw material acceleration component 4 is connected to the middle of the overflow tank 3 through the conveying pump component 5. In operation, the raw material acceleration component 4 mixes and accelerates the sludge transported from the sludge pipe 9 with the working water circulating from the overflow tank 3 to form a high-speed fluid, which is then sent to the slurry separation component 1. The slurry separation component 1 separates the gypsum slurry in the sludge. The separated sludge enters the sludge collection tank 2 through the bottom outlet, while the clear liquid containing gypsum slurry enters the overflow tank 3 through the overflow outlet, achieving preliminary separation. At the same time, part of the clear liquid in the overflow tank 3 is transported back to the raw material acceleration component 4 as working water through the conveying pump component 5, forming a cycle, which improves the separation efficiency and saves water resources.

[0034] like Figure 1 , Figure 2 As shown, in some embodiments, the slurry separation component 1 includes a cyclone separator 6, with two cyclone separators 6 connected in parallel. The underflow port of the cyclone separator 6 is connected to a sludge collection tank 2. The cyclone separator 6 uses the centrifugal force generated by high-speed rotation to throw the denser sludge particles in the sludge-slurry mixture into the container wall, and under the action of gravity, they move downward along the container wall and finally enter the sludge collection tank 2 from the underflow port. The less dense gypsum slurry moves upward under the drive of the central airflow and enters the overflow tank 3 from the overflow port. The two parallel cyclone separators 6 can be flexibly switched according to the processing volume. When one is working, the other can be used as a backup to ensure continuous and stable operation of the device.

[0035] Because the density difference between sludge and water is relatively small, the initial velocity of the raw material entering the cyclone separator 6 should be relatively high to improve separation efficiency. Although common pumps can increase the velocity of the sludge-water mixture, the solid particles impurities contained in the sludge can easily damage the pump. Based on this, in this embodiment, the raw material acceleration component 4 includes a jet pump 7. The output end of the jet pump 7 is connected to the raw material inlet end of the cyclone separator 6, and the feed end of the jet pump 7 is connected to the sludge pipe 9. The jet pump 7 forms a low-pressure zone by spraying working water at high speed at the nozzle, which draws in the sludge from the sludge pipe 9 and mixes it with the working water. In the diffuser, the kinetic energy is converted into pressure energy, allowing the mixture to enter the cyclone separator 6 at a high velocity. Without the need for mechanical rotating parts, this effectively avoids wear on the equipment caused by solid particles in the sludge, while ensuring that the sludge enters the separation component at a sufficient velocity, providing a power basis for efficient separation.

[0036] In this embodiment, the delivery pump assembly 5 includes an open centrifugal pump assembly 8. The input end of the open centrifugal pump assembly 8 is connected to the middle of the overflow tank 3, and the output end of the open centrifugal pump assembly 8 is connected to the working water inlet of the raw material acceleration assembly 4. The open centrifugal pump assembly 8 draws the clear liquid from the middle of the overflow tank 3 into the pump and pressurizes and delivers it to the working water inlet of the jet pump 7, providing a stable working water source for the jet pump 7. Its open structure facilitates the handling of clear liquid containing a small amount of impurities, ensuring the continuity and stability of the working water supply, thereby ensuring the normal operation of the raw material acceleration assembly 4.

[0037] like Figure 1 , Figure 2As shown, in one embodiment, the overflow tank 3 is further provided with a foam overflow port 10 at its upper end, which communicates with the sludge collection tank 2. A dilution pipe 11 is also connected to the lower side of the overflow tank 3, with the other end of the dilution pipe 11 communicating with the sludge collection tank 2. A control valve 12 is installed on the dilution pipe 11. During device operation, a small amount of foam will be generated on the upper layer of the clear liquid in the overflow tank 3. This foam flows by gravity through the foam overflow port 10 to the sludge collection tank 2, preventing foam from mixing with the clear liquid and affecting the recycling effect, thus improving the purity of the clear liquid. When the sludge in the sludge collection tank 2 has a low water content and high viscosity, making it unsuitable for subsequent transportation, the control valve 12 can be opened to allow the clear liquid in the overflow tank 3 to flow into the sludge collection tank 2 through the dilution pipe 11, mixing with the sludge to reduce its viscosity and facilitate subsequent pumping.

[0038] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the sludge collection box 2 is also connected to a sludge dewatering device 13. Specifically, the sludge dewatering device 13 includes a first dewatering belt assembly 14 and a second dewatering belt assembly 15, both of which are mounted on the frame 16 and are arranged opposite to each other. A feeding assembly 17 is also mounted on the frame 16, with its output end located above the first dewatering belt assembly 14. A compression roller assembly 18 is also mounted on the frame 16 and is used to compress and dewater the sludge between the first dewatering belt assembly 14 and the second dewatering belt assembly 15.

[0039] The feeding assembly 17 evenly spreads the sludge transported from the sludge collection box 2 onto the first dewatering belt assembly 14. As the first dewatering belt assembly 14 and the second dewatering belt assembly 15 move relative to each other, the sludge is carried between them. Under the repeated squeezing action of multiple squeezing roller assemblies 18, the water in the sludge is squeezed out and discharged through the dewatering belt, thus achieving sludge dewatering. The dewatered sludge then moves with the dewatering belt to the end of the first dewatering belt assembly 14 and is discharged.

[0040] The first dewatering belt assembly 14 includes a first dewatering belt 19, which is fitted onto a first roller assembly 20. The first roller assembly 20 is mounted on a frame 16 and connected to a first power assembly. A first tensioning assembly 21 is also provided on the first dewatering belt 19. The first power assembly drives the first roller assembly 20 to rotate, causing the first dewatering belt 19 to circulate. The first roller assembly 20 provides support and motion guidance for the first dewatering belt 19. The first tensioning assembly 21 adjusts the tension of the first dewatering belt 19 to prevent it from becoming loose or deviating during operation, ensuring stable sludge transport and compression. Similarly, the second dewatering belt assembly 15 includes a second dewatering belt 22, which is fitted onto a second roller assembly 23. The second roller assembly 23 is mounted on a frame 16 and connected to a second power assembly. A second tensioning assembly 24 is also provided on the second dewatering belt 22.

[0041] The frame 16 is also equipped with a cleaning water tank 25 for cleaning the second dewatering belt 22. When the second dewatering belt 22 runs to the cleaning water tank 25, the cleaning water tank 25 can rinse the residual sludge and impurities on its surface to maintain the cleanliness of the second dewatering belt 22 and prevent the accumulation of impurities from affecting the subsequent dewatering effect and the service life of the dewatering belt.

[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gypsum slurry separation and treatment device applied to an aeration tank, characterized in that: include The slurry separation component (1) has a sludge collection box (2) connected to its underflow port and an overflow box (3) connected to its overflow port. The raw material acceleration component (4) is connected to the feed end of the slurry separation component (1) at its output end. The feed end of the raw material acceleration component (4) is connected to the sludge pipe (9). The working water feed end of the raw material acceleration component (4) is connected to the middle of the overflow box (3) through the conveying pump component (5).

2. The gypsum slurry separation and treatment device applied to an aeration tank according to claim 1, characterized in that: The slurry separation component (1) includes a cyclone separator (6), two of the cyclone separators (6) are connected in parallel, and the underflow port of the cyclone separator (6) is connected to the sludge collection box (2).

3. The gypsum slurry separation and treatment device applied to an aeration tank according to claim 2, characterized in that: The raw material acceleration component (4) includes a jet pump (7), the output end of which is connected to the raw material inlet end of the cyclone separator (6), and the feed end of which is connected to the sludge pipe (9).

4. The gypsum slurry separation and treatment device applied to an aeration tank according to claim 2, characterized in that: The delivery pump assembly (5) includes an open centrifugal pump assembly (8), the input end of which is connected to the middle of the overflow tank (3), and the output end of which is connected to the working water inlet of the raw material acceleration assembly (4).

5. The gypsum slurry separation and treatment device applied to an aeration tank according to claim 1, characterized in that: The overflow box (3) is also provided with a foam overflow port (10) at the upper end, and the foam overflow port (10) is connected to the sludge collection box (2); The overflow box (3) is also connected to a dilution pipe (11) on its lower side. The other end of the dilution pipe (11) is connected to the sludge collection box (2). A control valve (12) is installed on the dilution pipe (11).

6. The gypsum slurry separation and treatment device applied to an aeration tank according to claim 1, characterized in that: The sludge collection box (2) is also connected to a sludge dewatering device (13).

7. The gypsum slurry separation and treatment device applied to an aeration tank according to claim 6, characterized in that: The sludge dewatering device (13) includes The first dehydration belt assembly (14) and the second dehydration belt assembly (15) are both mounted on the frame (16) and are arranged opposite to each other. Feeding assembly (17), the feeding assembly (17) is mounted on the frame (16) and the output end of the feeding assembly (17) is located on the upper side of the first dewatering belt assembly (14); The extrusion roller assembly (18) is mounted on the frame (16) and is used to extrude and dewater the sludge between the first dewatering belt assembly (14) and the second dewatering belt assembly (15).

8. The gypsum slurry separation and treatment device applied to an aeration tank according to claim 7, characterized in that: The first dewatering belt assembly (14) includes a first dewatering belt (19), which is sleeved on a first roller assembly (20). The first roller assembly (20) is mounted on the frame (16). The first roller assembly (20) is connected to a first power assembly. A first tensioning assembly (21) is also provided on the first dewatering belt (19).

9. The gypsum slurry separation and treatment device applied to an aeration tank according to claim 7, characterized in that: The second dewatering belt assembly (15) includes a second dewatering belt (22), which is sleeved on the second roller assembly (23). The second roller assembly (23) is mounted on the frame (16). The second roller assembly (23) is connected to a second power assembly. A second tensioning assembly (24) is also provided on the second dewatering belt.

10. The gypsum slurry separation and treatment device applied to an aeration tank according to claim 9, characterized in that: The frame (16) is also equipped with a cleaning water tank (25) for cleaning the second dewatering belt (22).

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