Three-phase medium separation structure for sewage active mud treatment
Patent Information
- Application Number
- CN202421121968.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-05-22
AI Technical Summary
In the current UASB reactor, the spray nozzle of the water distribution pipeline is too small, which makes the sewage impurity particles prone to blockage when they are large, resulting in the inability to flow, uneven water distribution, blockage of the sludge pipeline, and poor sludge discharge, which affects the sewage treatment effect.
Design a three-phase media separation structure for sewage activated sludge treatment, including cylinder, partition protrusion, flow restriction chamber sleeve, flow blocking chamber sleeve, layer filter partition, water distribution pipe, return pipe, air return pipe and sewage discharge pipe . By limiting the setting position and angle of the water distribution pipe, a water cyclone flow method is formed from top to bottom, which accelerates the settlement of solid impurities and screens the solid impurities through the filter holes of the layer filter partition.
By improving the wastewater injection process, a water cyclone flow method is formed, which significantly accelerates the settlement and screening of solid impurities, avoids the problems of sludge discharge or blockage caused by large impurities, and improves the sewage treatment effect.
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Figure CN222524255U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of granulators, in particular to a three-phase medium separation structure for sewage activated mud treatment. Background Art
[0002] The UASB reactor is mainly composed of a columnar sedimentation zone with high suspended solids activated sludge particles. The principle is: wastewater enters from the bottom of the reactor, and the gas flow at the bottom drives the wastewater and the sludge in the bed to flow upward, thereby achieving the removal of organic matter in the sewage, and the activated sludge in the sewage bed reacts biologically with the organic matter in the wastewater, which is removed through anaerobic fermentation and sedimentation, and biogas is produced at the same time. The premise of its operation includes the formation of granular sludge or flocculent sludge with good sedimentation performance in the reactor, and the good stirring effect formed by the uniform distribution of gas production and water inlet.
[0003] The current UASB reactor is designed as an umbrella-shaped water distributor. Sewage enters the umbrella-shaped water distributor from the bottom. The sludge is separated by the water distributor, and part of the sludge is precipitated inside the water distributor. The sludge discharge pipe is led out from the inside of the water distributor. The nozzle of the water distribution pipe is too small. When the impurity particles of the sewage are large, it is easy to be blocked, resulting in inability to flow, uneven water distribution, blockage of the sludge pipe, and poor sludge discharge. Utility Model Content
[0004] The utility model aims to provide a three-phase medium separation structure for sewage activated sludge treatment. In view of the operation process of the current UASB reactor, because the water distribution pipe nozzle is too small, when the sewage impurity particles are large, it is easy to be blocked, resulting in no flow, uneven water distribution, sludge pipe blockage, and poor sludge discharge, which affects the sewage treatment effect.
[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a three-phase medium separation structure for sewage activated mud treatment, including a cylinder, a separation protrusion is installed at the bottom end of the cylinder, and a limited flow chamber sleeve and a flow blocking chamber sleeve are arranged at the upper end position of the cylinder corresponding to the separation protrusion along the direction from bottom to top, the cross section of the separation protrusion is truncated cone-shaped and the outer wall of the separation protrusion is a circular arc inclined surface, a layer filter plate is installed at the bottom end position of the cylinder corresponding to the separation protrusion, and the layer filter plate is arranged along the cylinder circle The center points are arranged in a circular array; an air bin is arranged between the top of the cylinder and the flow-blocking bin sleeve, and a return water pipe and an air return pipe are respectively installed at the position of the cylinder corresponding to the air bin, a water distribution pipe is installed at the middle position of the cylinder corresponding to the flow-limiting bin sleeve and the dividing protrusion, the length direction of the water distribution pipe is tangent to the outer contour line of the bottom end of the flow-limiting bin sleeve, and the water distribution pipes are arranged in a circular array along the center point of the cylinder and are linearly equidistant along the height direction of the cylinder, and a sewage pipe is installed at the position of the cylinder corresponding to the dividing protrusion.
[0006] Among them, filter holes are opened in the layer filter plates, and the diameters of the filter holes in multiple layer filter plates decrease or increase arithmetic progression in the clockwise direction or counterclockwise direction, and the number of the sewage pipes is equal to the number of the layer filter plates.
[0007] Wherein, an impeller cone is rotatably mounted at the upper end of the separation protrusion, and the diameter of the impeller cone is equal to the diameter of the upper end of the flow limiting chamber sleeve.
[0008] Among them, the diameter of the upper end of the flow limiting chamber sleeve is smaller than the diameter of the lower end thereof, and the diameter of the lower end of the flow limiting chamber sleeve is smaller than the diameter of the inner wall of the cylinder.
[0009] Wherein, a directional sleeve is installed on the inner wall position of the lower end of the cylinder corresponding to the choke sleeve, and the upper side surface and the lower side surface of the directional sleeve are inclined downward along the axis direction of the center point of the cylinder.
[0010] The lower surface of the blocking chamber sleeve matches the upper surface of the directional sleeve, and filter screens are arranged in the blocking chamber sleeve and the directional sleeve.
[0011] The beneficial effects of the embodiments of the utility model are as follows: the technical scheme disclosed in the embodiments of the utility model, the overall structure is based on the current UASB reactor treatment process of sewage, specifically, the separation process of the three forms of medium, gas, solid and liquid, is improved, and the separation and discharge process of solid impurities therein is mainly aimed at: by limiting the setting position and setting angle of the water distribution pipe, the injection process of wastewater is further improved, so that the wastewater forms a water vortex flow mode from top to bottom, the purpose of which is to: accelerate the sedimentation rate of solid impurities in the treatment process, so that the solid impurities are mainly settled at the position of the separation protrusion, and the stirring reaction time of the active mud and sewage is guaranteed; in combination with the above content, a layer filter plate is added again for the setting of the separation protrusion, and the filter hole diameter in the layer filter plate is in two states of increasing or decreasing along the water vortex flow direction, so that the solid impurities, when cooperating with the water vortex flow mode, the settled solid impurities are further screened according to the size of the solid impurity particles at the separation protrusion position, the purpose of which is to avoid the impurity particles being large and affecting the mud discharge effect, and to avoid the related problems of poor mud discharge or blockage. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0013] Figure 1This is a schematic structural diagram of a three-phase medium separation structure for sewage activated mud treatment in an embodiment of the utility model;
[0014] Figure 2 It is a cross-sectional view of a cylinder in a three-phase medium separation structure for sewage activated mud treatment in an embodiment of the utility model;
[0015] Figure 3 In the embodiment of the utility model, a three-phase medium separation structure for sewage activated mud treatment is provided. Figure 1 A cross-sectional view of
[0016] Figure 4 It is a top view of the water distribution pipe corresponding to the cylinder in a three-phase medium separation structure for sewage activated mud treatment in an embodiment of the utility model;
[0017] Figure 5 It is a schematic diagram of water flow in a water distribution pipe in a three-phase medium separation structure for sewage activated sludge treatment in an embodiment of the utility model.
[0018] In the figure: 1. Cylinder; 2. Return air pipe; 3. Return water pipe; 4. Water distribution pipe; 5. Drain pipe; 6. Flow-blocking chamber sleeve; 7. Layer filter plate; 8. Separation protrusion; 9. Impeller cone; 10. Flow-limiting chamber sleeve; 11. Air chamber; 12. Filter screen; 13. Directional sleeve. DETAILED DESCRIPTION
[0019] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] Please also see Figures 1 to 5 , which is a schematic diagram of a three-phase medium separation structure for sewage activated sludge treatment in an embodiment of the utility model. The three-phase medium separation structure comprises: a cylinder 1, a separation protrusion 8 is installed at the bottom end of the cylinder 1, and a limited flow chamber sleeve 10 and a flow blocking chamber sleeve 6 are arranged from bottom to top at the upper end position of the cylinder 1 corresponding to the separation protrusion 8, the cross section of the separation protrusion 8 is truncated cone-shaped and the outer wall of the separation protrusion 8 is an arc inclined surface, a layer filter plate 7 is installed at the bottom end position of the cylinder 1 corresponding to the separation protrusion 8, and the layer filter plate 7 is arranged in a circular array along the center point of the cylinder 1;
[0021] An air bin 11 is arranged between the top of the cylinder 1 and the flow-blocking bin sleeve 6, and a return water pipe 3 and an air return pipe 2 are respectively installed at the position of the cylinder 1 corresponding to the air bin 11, and a water distribution pipe 4 is installed at the middle position of the cylinder 1 corresponding to the flow-limiting bin sleeve 10 and the dividing protrusion 8. The length direction of the water distribution pipe 4 is tangent to the outer contour line of the bottom end of the flow-limiting bin sleeve 10, and the water distribution pipes 4 are arranged in a circular array along the center point of the cylinder 1 and are linearly equidistantly arranged along the height direction of the cylinder 1, and a sewage pipe 5 is installed at the position of the cylinder 1 corresponding to the dividing protrusion 8.
[0022] The basic principle of the three-phase medium separation structure for sewage activated mud treatment is: the overall structure is based on the current sewage treatment technology of the UASB reactor, wherein the flow limiting chamber jacket 10 serves as an activated mud bed, wastewater is injected from the bottom of the cylinder 1, passes through the activated mud bed and then enters the flow blocking chamber jacket 6, the treated wastewater and the generated biogas and other gases are discharged through the return air pipe 2 and the return water pipe 3, and the generated solid impurities continue to settle at the bottom of the cylinder 1, which is not explained in this embodiment.
[0023] In this embodiment, the separation and removal process of solid impurities is mainly improved, which is manifested as: firstly, the setting angle and setting position of the water distribution pipe 4 are limited, please refer to Figure 4 and Figure 5 , wastewater is injected from the water distribution pipe 4, and the injection direction of the wastewater is tangent to the outer edge of the lower end of the flow limiting bin sleeve 10, and the water distribution pipe 4 is arranged in a circular array direction, so that at the "moment" when the wastewater is injected into the cylinder 1, the wastewater has a directional impact, and then the wastewater forms a water vortex in the cylinder 1, and with the continuous injection of wastewater, the liquid level in the cylinder 1 continues to increase, and then a water vortex flow mode from top to bottom is formed. In this mode, the organic matter in the wastewater contacts and reacts with the activated mud, and the solid impurities produced continue to settle under the action of the water vortex, and finally accumulate on the separation protrusion 8.
[0024] Furthermore, with respect to the three-phase medium separation structure for sewage activated sludge treatment as described above, the water cyclone flow mode is further explained as follows:
[0025] Filter holes are provided in the layer filter separator 7, and the diameters of the filter holes in the multiple layer filter separators 7 are arbitrarily decreased or increased in arithmetic progression in the clockwise direction or counterclockwise direction. The number of sewage pipes 5 is equal to the number of layer filter separators 7. An impeller cone 9 is rotatably installed at the upper end of the partition protrusion 8. The diameter of the impeller cone 9 is equal to the diameter of the upper end of the flow limiting chamber sleeve 10. The diameter of the upper end of the flow limiting chamber sleeve 10 is smaller than the diameter of the lower end, and the diameter of the lower end of the flow limiting chamber sleeve 10 is smaller than the inner wall diameter of the cylinder 1. A directional sleeve 13 is installed on the inner wall of the lower end of the cylinder 1 corresponding to the flow blocking chamber sleeve 6. The upper and lower surfaces of the directional sleeve 13 are inclined downward along the axis direction of the center point of the cylinder 1. The lower surface of the flow blocking chamber sleeve 6 matches the upper surface of the directional sleeve 13, and a filter screen 12 is provided in the flow blocking chamber sleeve 6 and the directional sleeve 13.
[0026] Thus, in combination with the above-mentioned three-phase medium separation structure for sewage activated sludge treatment, the impeller cone 9 will also be driven to rotate in the water vortex flow mode, and the impeller cone 9 can promote the water vortex flow mode under the action of the inertial force, and refer to Figure 4 The number of filter plates 7 is 3, and the water vortex flow mode is as follows: Figure 5 The counterclockwise direction of the display, so that the diameter of the filter holes in the three layer filter plates 7 decreases in the counterclockwise direction, the settled solid impurities will also rotate in coordination with the water vortex flow, and the solid impurities will be further screened according to the particle size after being filtered by the layer filter plates 7, such as: the partition protrusions 8 are set into three areas through the layer filter plates 7, and are numbered 1, 2, and 3 in the counterclockwise direction, and then the solid impurity particles deposited in the numbered 1 area are the largest, and the solid impurity particles deposited in the numbered 3 area are the smallest, so that the caliber of the sewage pipe 5 in the corresponding area can be set. This purpose is to avoid large particles of solid impurities affecting the normal sludge discharge process.
[0027] Please refer again Figure 3, the flow limiting bin sleeve 10 will not affect the water cyclone flow mode. On the contrary, under the action of the water cyclone, the solid impurities in the wastewater are mainly concentrated in the central area of the cylinder 1, that is, the flow limiting bin sleeve 10. This part accelerates the rapid sedimentation of solid impurities. As the water level continues to rise, the wastewater first enters the flow blocking bin sleeve 6. The flow blocking bin sleeve 6 and the cylinder 1 are connected in a sliding manner in the vertical direction, while the flow limiting bin sleeve 10 and the cylinder 1 remain fixed. It should be noted that when the solid impurity particles in the wastewater located in the flow blocking bin sleeve 6 are small, they can be "returned" to the internal position of the cylinder 1 located on the lower side of the directional sleeve 13 along the filter screen 12 in the flow blocking bin sleeve 6-directional sleeve 13. On the contrary, solid impurities with larger particles are retained in the flow blocking bin sleeve 6 and eventually slowly "gathered" into the flow limiting bin sleeve 10, while solid impurities with smaller particles are mainly circulated again along the periphery of the flow limiting bin sleeve 10 until they are deposited into large particles of solid impurities and finally deposited on the separation protrusion 8.
[0028] As mentioned above, based on the operating principle of the current UASB reactor, the three forms of media, namely gas, solid and liquid, are optimized and improved, which is specifically reflected in the treatment process of solid impurities, which is manifested as: by limiting the setting position and setting angle of the water distribution pipe, the injection process of wastewater is further improved, so that the wastewater forms a water vortex flow from top to bottom, the purpose of which is to: accelerate the sedimentation rate of solid impurities in the treatment process, so that the solid impurities are mainly settled at the position of the separation protrusion, and further cooperate with the water vortex flow mode, so that the settled solid impurities are further screened at the separation protrusion according to the size of the solid impurity particles, the purpose of which is to avoid the large impurity particles affecting the sludge discharge effect, and to avoid related problems of poor sludge discharge or blockage.
[0029] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.
[0030] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0031] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is only limited by the claims and their full scope and equivalents.
Claims
1. A three-phase medium separation structure for sewage activated sludge treatment, comprising a cylinder (1), characterized in that: A separation protrusion (8) is installed at the bottom end of the cylinder (1), and a flow limiting chamber sleeve (10) and a flow blocking chamber sleeve (6) are arranged in a direction from bottom to top at an upper end position of the cylinder (1) corresponding to the separation protrusion (8), the cross section of the separation protrusion (8) is in the shape of a truncated cone, and the outer wall of the separation protrusion (8) is an arc inclined surface, and a layer filter plate (7) is installed at the bottom end position of the cylinder (1) corresponding to the separation protrusion (8), and the layer filter plates (7) are arranged in a ring array along the center point of the cylinder (1); An air chamber (11) is arranged between the top of the cylinder (1) and the flow-blocking chamber sleeve (6), and a water return pipe (3) and an air return pipe (2) are respectively installed at the position of the cylinder (1) corresponding to the air chamber (11), and a water distribution pipe (4) is installed at the middle position of the cylinder (1) corresponding to the flow-limiting chamber sleeve (10) and the separation protrusion (8), the length direction of the water distribution pipe (4) is tangent to the outer contour line of the bottom end of the flow-limiting chamber sleeve (10), and the water distribution pipes (4) are arranged in a circular array along the center point of the cylinder (1) and are linearly equidistantly arranged along the height direction of the cylinder (1), and a sewage discharge pipe (5) is installed at the position of the cylinder (1) corresponding to the separation protrusion (8).
2. The three-phase medium separation structure for sewage activated sludge treatment according to claim 1 is characterized in that: The layer filter plates (7) are provided with filter holes, and the diameters of the filter holes in the plurality of layer filter plates (7) decrease or increase arithmetic progression in a clockwise or counterclockwise direction, and the number of the sewage discharge pipes (5) is equal to the number of the layer filter plates (7).
3. The three-phase medium separation structure for sewage activated sludge treatment according to claim 1 is characterized in that: An impeller cone (9) is rotatably mounted at the upper end of the separation protrusion (8), and the diameter of the impeller cone (9) is equal to the diameter of the upper end of the flow limiting chamber sleeve (10).
4. The three-phase medium separation structure for sewage activated sludge treatment according to claim 3 is characterized in that: The diameter of the upper end of the flow limiting chamber sleeve (10) is smaller than the diameter of the lower end thereof, and the diameter of the lower end of the flow limiting chamber sleeve (10) is smaller than the diameter of the inner wall of the cylinder (1).
5. The three-phase medium separation structure for sewage activated sludge treatment according to claim 1 is characterized in that: An orientation sleeve (13) is installed on the inner wall of the lower end of the cylinder (1) corresponding to the flow-blocking chamber sleeve (6), and the upper and lower surfaces of the orientation sleeve (13) are inclined downward along the axis direction of the center point of the cylinder (1).
6. The three-phase medium separation structure for sewage activated sludge treatment according to claim 5, characterized in that: The lower surface of the blocking chamber sleeve (6) matches the upper surface of the directional sleeve (13), and filter screens (12) are provided in the blocking chamber sleeve (6) and the directional sleeve (13).