Sand removal integrated device

Abstract

The utility model provides a sand removal integration device relates to sewage sand removal technical field, include: box, the sand washing area and the sedimentation area are sequentially arranged from one end to the other end in the box, the sand washing area is provided with aeration component, the sand washing area upper portion is provided with skimming component, the sedimentation area is provided with inclined plate, and the inclined plate is inverted V shaped inclined plate, the skimming component is set in the sand washing area's top, and is connected with the box, and the water outlet of skimming component is connected with the sand washing area, the sand discharging part, a part of sand discharging part sets up in the bottom of the box, and another part of sand discharging part extends to the outside of the box, solve the problem that the pretreatment equipment in the prior art in the municipal wastewater treatment process is not good to the fine sand removal effect of the smaller particle size.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater sand removal technology, and more specifically, relates to an integrated sand removal device. Background Technology

[0002] Sand removal, a crucial step in the pretreatment process of urban wastewater treatment, aims to remove sand, gravel, and large particles carried in the wastewater. This protects downstream equipment, reduces sedimentation in subsequent structures, prevents siltation, and ensures the normal operation of facilities. Existing pretreatment equipment struggles to completely remove all particle sizes of sand and gravel. It is more effective at removing coarse sand and gravel larger than 200 micrometers, but its removal rate is lower for fine sand smaller than 200 micrometers. When sand and gravel enter the biological system, they significantly impact subsequent processes. This not only causes problems such as equipment entanglement, wear, siltation, and blockage, reducing the efficiency of the biological system, but also significantly increases the energy consumption of underwater electrical components. Furthermore, fine sand and gravel entering the sludge return system accelerates the wear and tear on pipes and fittings. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing an integrated sand removal device, thereby solving the problem that pretreatment equipment in existing urban sewage treatment processes is ineffective at removing fine sand with small particle sizes.

[0004] To achieve the above objectives, this utility model provides an integrated sand removal device, comprising:

[0005] The tank contains a sand washing zone and a sedimentation zone arranged sequentially from one end to the other. The sand washing zone is equipped with an aeration component and a skimming component is installed at the top of the sand washing zone. The sedimentation zone is equipped with an inclined plate, which is an inverted V-shaped inclined plate.

[0006] A slag removal component is disposed above the sand washing zone and connected to the tank body, and the outlet end of the slag removal component is connected to the sand washing zone.

[0007] The sand discharge component is provided in part at the bottom of the housing and extends to the outside of the housing.

[0008] Optionally, a flow-rectifying wall is provided between the sand washing zone and the sedimentation zone.

[0009] Optionally, a partition is provided on the side of the rectifier flower wall near the interior of the sand washing area, and an opening is left at the upper end of the partition.

[0010] Optionally, the baffle is disposed on one side of the aeration component, and a guide plate is disposed on the upper part of the other side of the aeration component.

[0011] Optionally, the skimming component is disposed on the upper part of the sand washing zone near the rectifier wall.

[0012] Optionally, the skimming component includes a skimming pipe.

[0013] Optionally, an outlet weir is provided on the side of the sedimentation zone away from the sand washing zone.

[0014] Optionally, the slag removal component includes a bar screen.

[0015] Optionally, the sand discharge component includes a first horizontal sand discharge screw device, a second horizontal sand discharge screw device, and an inclined sand discharge screw device connected in sequence. The second horizontal sand discharge screw device is disposed outside the housing and forms an angle with the axis of the first horizontal sand discharge screw device. The inclined sand discharge screw device extends inclined upward.

[0016] This utility model provides an integrated sand removal device, the advantages of which are as follows: the integrated sand removal device is set up in an integrated manner inside and outside the tank, with a compact structure and small space occupation. The slag removal component connected to the top of the tank can remove slag from the influent, separating the larger solid particles in the influent. The effluent is then fed into the sand washing zone inside the tank. The aeration component in the sand washing zone aerates the water, creating turbulence under the action of aeration, which promotes the separation of organic matter and inorganic mineralized particles. The inorganic mineralized particles can sink into the sand discharge component, and the floating scum can be removed by the skimming component. The effluent is then fed into the sedimentation zone, where sand and water separation is performed with the assistance of inclined plates. This removes the smaller solid particles and causes them to sink into the sand discharge component, which discharges the sand out of the tank. The effluent from the sedimentation zone is the sand-removed water. After the sand removal treatment of this integrated sand removal device, the sand content of the effluent meets the standard, especially for fine sand with a smaller particle size, the removal effect is significantly improved.

[0017] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0018] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0019] Figure 1 A front view structural schematic diagram of an integrated sand removal device according to an embodiment of the present invention is shown.

[0020] Figure 2 A top view of an integrated sand removal device according to an embodiment of the present invention is shown.

[0021] Figure 3 The diagram shows a right-side view of an integrated sand removal device according to an embodiment of the present invention.

[0022] Figure 4 It shows Figure 1 A schematic diagram of the cross-sectional structure along direction A.

[0023] Figure 5 It shows Figure 2 A schematic diagram of the cross-sectional structure along direction B.

[0024] Figure 6 It shows Figure 2 A schematic diagram of the C-direction cross-section structure.

[0025] Figure 7 It shows Figure 3 A schematic diagram of the D-direction cross-section structure.

[0026] Figure 8 It shows Figure 2 A schematic diagram of the internal structure.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Box body; 2. Sand washing zone; 3. Sedimentation zone; 4. Aeration components; 5. Slag skimming components; 6. Inclined plate; 7. Slag removal components; 8. Flow straightening wall; 9. Baffle plate; 10. Opening; 11. Effluent weir; 12. First horizontal sand discharge screw conveyor; 13. Second horizontal sand discharge screw conveyor; 14. Inclined sand discharge screw conveyor; 15. Guide plate. Detailed Implementation

[0029] Preferred embodiments of the present invention will now be described in more detail. While preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0030] like Figures 1 to 8 As shown, this utility model provides an integrated sand removal device, comprising:

[0031] The box 1 has a sand washing zone 2 and a sedimentation zone 3 arranged sequentially from one end to the other. The sand washing zone 2 is equipped with an aeration component 4 and a skimming component 5 at the top of the sand washing zone 2. The sedimentation zone 3 is equipped with an inclined plate 6, which is an inverted V-shaped inclined plate.

[0032] The slag removal component 7 is located above the sand washing zone 2 and is connected to the tank 1. The outlet end of the slag removal component 7 is connected to the sand washing zone 2.

[0033] The sand discharge components are arranged in two parts: one part is located at the bottom of the housing 1, and the other part extends to the outside of the housing 1.

[0034] Specifically, to address the problem of poor removal efficiency of fine sand particles in existing urban wastewater treatment pretreatment equipment, this utility model provides an integrated sand removal device. The device is integrated inside and outside the housing 1, featuring a compact structure and small footprint. The slag removal component 7 connected above the housing 1 removes slag from the influent, separating larger solid particles. The effluent is then fed into the sand washing zone 2 within the housing 1, where the aeration component 4 aerates the water. This aeration creates turbulence, promoting the removal of organic matter... The material is separated from the inorganic mineralized particulate matter. The inorganic mineralized particulate matter can sink into the sand discharge component, and the floating scum can be removed by the skimming component 5. Then, the effluent is fed into the sedimentation zone 3. In the sedimentation zone 3, sand and water are separated with the assistance of the inclined plate 6. Smaller solid particles are removed and sink into the sand discharge component. The sand discharge component discharges sand out of the tank 1. The effluent from the sedimentation zone 3 is the sand-removed water. After the sand removal treatment of this integrated sand removal device, the sand content of the effluent meets the standard. The removal effect is significantly improved, especially for fine sand with smaller particle size.

[0035] Furthermore, the inverted V-shaped inclined plate 6 is based on the principle of shallow pool sedimentation. The inverted V-shaped inclined plate 6 realizes the mud-water separation process in which the water flows horizontally and the sediment falls vertically, avoiding mutual interference between the water path and the mud path. It can remove ultrafine sand larger than 75 microns and improve sedimentation efficiency.

[0036] Optionally, a flow-rectifying flower wall 8 is provided between the sand washing zone 2 and the sedimentation zone 3.

[0037] Specifically, the rectifier wall 8 ensures the uniformity of water distribution in the sedimentation zone 3.

[0038] In this embodiment, the rectifier flower wall 8 is provided with multiple rectifier holes.

[0039] Optionally, a partition 9 is provided on the side of the rectifier flower wall 8 near the interior of the sand washing area 2, with an opening 10 at the upper end of the partition 9.

[0040] Specifically, the upper end of the baffle 9 is lower than the upper end of the rectifier wall 8, forming an opening 10. Water can enter the space between the baffle 9 and the rectifier wall 8 through the opening 10, and then enter the sedimentation zone 3 through the rectifier wall 8.

[0041] Optionally, the baffle 9 is provided on one side of the aeration component 4, and the guide plate 15 is provided on the upper part of the other side of the aeration component 4.

[0042] Specifically, the effluent from the slag removal component 7 flows into the sand washing zone 2 along the guide plate 15.

[0043] Optionally, the slag skimming component 5 is located on the upper part of the sand washing zone 2 near the flow straightening wall 8.

[0044] Specifically, the skimming component 5 is located between the opening 10 of the partition 9 and the upper end of the rectifier flower wall 8.

[0045] Optionally, the skimming component 5 includes a skimming pipe.

[0046] Specifically, the skimming pipe can discharge the floating scum from the sand washing zone 2.

[0047] Optionally, a effluent weir 11 is provided on the side of the sedimentation zone 3 away from the sand washing zone 2.

[0048] Specifically, the effluent after passing through sedimentation zone 3 is discharged through effluent weir 11 for subsequent treatment.

[0049] Optionally, the slag removal component 7 includes a grating.

[0050] Specifically, the slag removal component 7 removes larger slag solids through an internal grid and can discharge them into the subsequent slag box after dewatering.

[0051] In this embodiment, the slag removal unit is capable of separating and removing slag solids with a particle size of 1 mm or larger.

[0052] Optionally, the sand discharge component includes a first horizontal sand discharge screw device 12, a second horizontal sand discharge screw device 13, and an inclined sand discharge screw device 14 connected in sequence. The second horizontal sand discharge screw device 13 is disposed outside the housing 1 and forms an angle with the axis of the first horizontal sand discharge screw device 12. The inclined sand discharge screw device 14 extends upward at an angle.

[0053] Specifically, the lower end of the housing 1 is tapered. The first horizontal sand discharge screw device 12 at its bottom can collect and transport the sinking solids and stir the sand and gravel to prevent them from caking. One end of the first horizontal sand discharge screw device 12 extends out of the housing 1 and is vertically connected to the second horizontal sand discharge screw device 13 to change the direction of sand and gravel transport. After being transported by the second horizontal sand discharge screw device 13, the sand and gravel enter the inclined sand discharge screw device 14 and are discharged by the inclined sand discharge screw device 14. During the sand discharge process, the fine sand is dewatered at the same time and can be discharged into the sand collection hopper, garbage container or transport device.

[0054] Furthermore, the tilt angle of the inclined sand discharge screw device 14 is 20°-60°, which can be adjusted according to the sand discharge volume to ensure that the moisture content of the discharged sand meets the standard.

[0055] In this embodiment, the aeration component 4 includes an aeration blower and an aeration pipeline. By adjusting the air volume, the separation of inorganic mineralized particulate matter and organic matter can be achieved, that is, the separation of sand and gravel from organic matter. The lighter matter can float to the water surface and be discharged from the tank 1 through the skimming pipe.

[0056] When using the integrated sand removal device provided by this utility model:

[0057] The slag and solid matter in the influent is removed by the slag removal component 7 to obtain the first effluent;

[0058] The first effluent is fed into the sand washing zone 2 inside the tank 1. In the sand washing zone 2, the aeration of the aeration component 4 promotes the separation of organic matter and inorganic mineralized particulate matter. The inorganic mineralized particulate matter sinks into the sand discharge component and obtains the second effluent.

[0059] The second effluent is fed into the sedimentation zone 3, where solid-liquid separation is performed by the inclined plate 6 within the sedimentation zone 3. The solid matter settles into the sand discharge component and obtains the third effluent.

[0060] Sand is removed using a sand removal component.

[0061] Specifically, this integrated sand removal device achieves a wastewater sand removal process capable of separating ultrafine sand larger than 75 microns. The influent, i.e., the sand-water mixture, flows into the tank 1 after the slag is removed by the screen in the slag removal component 7. The first effluent is introduced into the sand washing zone 2 along the guide plate 15. An aeration pipe is installed at the bottom of one side of the sand washing zone 2, allowing compressed air to be introduced into the zone using an aeration fan. Turbulence is created under the aeration of the bubbles, promoting the separation of organic matter from inorganic mineralized particles. Solid particles sink to the bottom of the tank 1 and are discharged through the skimming pipe. The second... The effluent continues to flow into the sedimentation zone 3 through the opening 10. To ensure smooth shallow sedimentation, a flow-regulating wall 8 is installed to ensure the uniformity of water distribution in the sedimentation zone 3. In the sedimentation zone 3, sand and water are separated by sedimentation through the inclined plate 6. The sand and gravel fall into the first horizontal sand discharge screw device 12 at the bottom of the tank 1 and are then transported out. After passing through the second horizontal sand discharge screw device 13 and the inclined sand discharge screw device 14, they can be discharged into the sand collection hopper. The inclined sand discharge screw device 14 dewaters the collected sand and gravel before discharging it. Meanwhile, the third effluent, as the water after sand removal, can be used for subsequent treatment, such as biological treatment of sewage.

[0062] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. An integrated sand removal device, characterized in that, The device includes: The tank contains a sand washing zone and a sedimentation zone arranged sequentially from one end to the other. The sand washing zone is equipped with an aeration component and a skimming component is installed at the top of the sand washing zone. The sedimentation zone is equipped with an inclined plate, which is an inverted V-shaped inclined plate. A slag removal component is disposed above the sand washing zone and connected to the tank body, and the outlet end of the slag removal component is connected to the sand washing zone. The sand discharge component is provided in part at the bottom of the housing and extends to the outside of the housing.

2. The integrated sand removal device according to claim 1, characterized in that, A flow-rectifying flower wall is provided between the sand washing zone and the sedimentation zone.

3. The integrated sand removal device according to claim 2, characterized in that, A partition is provided on the side of the rectifier flower wall near the interior of the sand washing area, and an opening is left at the upper end of the partition.

4. The integrated sand removal device according to claim 3, characterized in that, The baffle is disposed on one side of the aeration component, and a guide plate is disposed on the upper part of the other side of the aeration component.

5. The integrated sand removal device according to claim 3, characterized in that, The skimming component is located on the upper part of the sand washing zone, near the rectifier wall.

6. The integrated sand removal device according to claim 5, characterized in that, The skimming component includes a skimming pipe.

7. The integrated sand removal device according to claim 1, characterized in that, A water outlet weir is provided on the side of the sedimentation zone away from the sand washing zone.

8. The integrated sand removal device according to claim 1, characterized in that, The slag removal component includes a bar screen.

9. The integrated sand removal device according to claim 1, characterized in that, The sand discharge component includes a first horizontal sand discharge screw device, a second horizontal sand discharge screw device, and an inclined sand discharge screw device connected in sequence. The second horizontal sand discharge screw device is disposed outside the housing and forms an angle with the axis of the first horizontal sand discharge screw device. The inclined sand discharge screw device extends upward at an angle.

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