Multistage AO-MBR coupled reclaimed water treatment device

Abstract

The utility model discloses a multistage AO-MBR coupled reclaimed water treatment device which comprises an integrated box body, the interior of the integrated box body is sequentially divided into an anoxic tank, an anaerobic tank, an aerobic tank and an MBR process tank from left to right by partition plates, the anoxic tank, the anaerobic tank, the aerobic tank and the MBR process tank are communicated with one another, and a sewage input pump is fixedly mounted at the top of the integrated box body; an output part of the sewage input pump is mutually communicated with the interior of the anoxic tank, an input end of the sewage input pump is communicated with an external blow-off pipeline, a frame is fixedly mounted in the MBR process tank, and MBR membrane pieces which are arranged at equal intervals are inserted into the frame. According to the utility model, the external flushing assembly and the bidirectional pressurizing mechanism are arranged, so that synchronous back flushing and external flushing are carried out on the MBR membrane, the cleaning efficiency is improved, stains outside the membrane are easy to fall off during back flushing, the surface of the membrane is cleaned more thoroughly and efficiently, and the operation efficiency of equipment is improved at the same time.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment, and more specifically, to a multi-stage AO-MBR coupled reclaimed water treatment device. Background Technology

[0002] A / O process: also known as anaerobic-aerobic process, in the anaerobic stage, anaerobic bacteria hydrolyze and acidify starch, carbohydrates, and soluble organic matter in domestic sewage, degrading large organic molecules into smaller ones, thus improving the subsequent aerobic treatment capacity. MBR process: a novel process combining activated sludge and membrane separation technologies. In water purification, using a combination of these two methods for sewage treatment can effectively improve the treatment efficiency.

[0003] Currently, since the MBR process relies on MBR filter membranes, a large amount of dirt accumulates on the outside of the MBR filter membrane during continuous wastewater treatment, requiring regular backwashing. However, current backwashing alone is insufficient to thoroughly clean the deep deposits on the MBR filter membrane, resulting in a shorter service life after backwashing and a higher cleaning frequency, thereby reducing the operating efficiency of the equipment. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a multi-stage AO-MBR coupled reclaimed water treatment device.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A multi-stage AO-MBR coupled reclaimed water treatment device includes an integrated tank. The interior of the integrated tank is divided from left to right by partitions into interconnected anoxic, anaerobic, aerobic, and MBR process tanks. A wastewater input pump is fixedly installed on the top of the integrated tank. The output of the wastewater input pump is connected to the interior of the anoxic tank, and the input end of the wastewater input pump is connected to an external sewage pipe. A frame is fixedly installed inside the MBR process tank, and MBR membrane elements are inserted into the frame at equal intervals. A bidirectional pressurization mechanism connected to the MBR membrane elements is installed on the top of the integrated tank. A lifting frame is slidably connected to the outside of the frame. A perforated cleaning pipe is rotatably installed on the lifting frame, and the perforated cleaning pipe is spaced apart from the MBR membrane elements. An external flushing assembly is installed on the lifting frame, and the external flushing assembly is connected and cooperates with the bidirectional pressurization mechanism. A lifting mechanism is installed on the integrated tank, and the lifting mechanism is connected and cooperates with the lifting frame.

[0007] As a further description of the above technical solution: the bidirectional pressurization mechanism includes a bidirectional pump, an output pipe and a diversion pipe. The bidirectional pump is fixedly installed on an integrated housing. The right end of the bidirectional pump is connected to an external water storage device through a pipe. The left end of the bidirectional pump is fixedly connected to the output pipe. The output pipe is connected to the MBR membrane element through the diversion pipe.

[0008] As a further description of the above technical solution: the external flushing assembly includes an L-shaped conduit, a hose, a horizontal tube, and rotating joints arranged at equal intervals. One end of the L-shaped conduit is connected and fixed to the output tube. The top end of the hose is fixedly connected to the left end of the L-shaped conduit. The bottom end of the hose is fixedly connected to the horizontal tube. The rotating joints are installed at equal intervals to the outside of the horizontal tube. One end of the porous cleaning tube is installed on the rotating joint. The other end of the porous cleaning tube is inserted to the other side of the frame and rotatably connected to the lifting frame.

[0009] As a further description of the above technical solution: the frame is provided with two rows of symmetrically distributed vertical grooves, and the porous cleaning pipe runs through the vertical grooves and rotates freely inside.

[0010] As a further description of the above technical solution: a sewage pump is installed at the bottom right side of the integrated tank. The input end of the sewage pump is connected to the inside of the MBR process tank through a pipe, and the output end of the sewage pump is connected to the external sludge treatment equipment.

[0011] As a further description of the above technical solution: the lifting mechanism includes a servo motor, a rotating rod and two steel wires. The servo motor is installed on the back of the integrated housing. The output end of the servo motor is fixedly connected to the rotating rod through a coupling. One end of each of the two steel wires is wound around and fixed to the outside of the rotating rod, and the other end of the two steel wires extends to the left and right and is fixedly connected to the top of the lifting frame.

[0012] As a further description of the above technical solution: a vertical rack arranged at intervals with the porous cleaning tube is fixedly installed on one side of the frame, and a toothed ring that meshes with the vertical rack is fixedly connected to the outside of the porous cleaning tube.

[0013] Compared with existing technologies, the advantages of this utility model are:

[0014] This solution achieves simultaneous backwashing and external rinsing of MBR membranes by setting up an external flushing component and a bidirectional pressurization mechanism. This not only improves cleaning efficiency, but also makes it easier for dirt on the outside of the membrane to fall off during backwashing, resulting in a more thorough and efficient cleaning of the membrane surface, while also improving the operating efficiency of the equipment. Attached Figure Description

[0015] Figure 1 This is a frontal cross-sectional view of the present invention.

[0016] Figure 2 This is a partial top view cross-sectional structural diagram of the present invention;

[0017] Figure 3 for Figure 2 Enlarged schematic diagram of section A in the middle;

[0018] Figure 4 This is a partial three-dimensional structural diagram of the present invention.

[0019] Explanation of the labels in the diagram:

[0020] 1. Integrated tank; 2. Anoxic tank; 3. Anaerobic tank; 4. Aerobic tank; 5. MBR process tank; 6. Wastewater input pump; 7. Frame; 71. Vertical trough; 8. MBR membrane element; 9. Bidirectional pressurization mechanism; 91. Bidirectional pump; 92. Output pipe; 93. Diversion pipe; 10. Lifting frame; 11. Perforated cleaning pipe; 12. External flushing assembly; 121. L-shaped conduit; 122. Flexible hose; 123. Horizontal pipe; 124. Rotary joint; 13. Sewage pump; 14. Lifting mechanism; 141. Servo motor; 142. Rotating rod; 143. Steel wire; 15. Vertical rack; 16. Gear ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model;

[0022] Please see Figures 1-4 In this utility model, a multi-stage AO-MBR coupled reclaimed water treatment device includes an integrated tank 1. The interior of the integrated tank 1 is divided from left to right by partitions into interconnected anoxic tank 2, anaerobic tank 3, aerobic tank 4, and MBR process tank 5. A sewage input pump 6 is fixedly installed on the top of the integrated tank 1. The output of the sewage input pump 6 is interconnected with the interior of the anoxic tank 2, and the input end of the sewage input pump 6 is connected to an external sewage discharge pipe. A frame 7 is fixedly installed inside the MBR process tank 5. The internal structure contains MBR membrane elements 8 arranged at equal intervals. The top of the integrated housing 1 is equipped with a bidirectional pressurization mechanism 9 that communicates with the MBR membrane elements 8. A lifting frame 10 is slidably connected to the outside of the frame 7. A multi-hole cleaning pipe 11 is rotatably installed on the lifting frame 10. The multi-hole cleaning pipe 11 is arranged at intervals with the MBR membrane elements 8. An external flushing assembly 12 is installed on the lifting frame 10. The external flushing assembly 12 communicates and cooperates with the bidirectional pressurization mechanism 9. A lifting mechanism 14 is installed on the integrated housing 1. The lifting mechanism 14 is connected and cooperates with the lifting frame 10.

[0023] In this invention, an integrated housing 1 serves as the main body of the device. A wastewater input pump 6 pressurizes and injects wastewater into the anoxic tank 2. The wastewater then sequentially enters the anaerobic tank 3 and the aerobic tank 4 to react and clean the internal organic matter. The reacted wastewater then enters the MBR process tank 5. A bidirectional pressurization mechanism 9 is activated to draw negative pressure from the MBR membrane element 8, filtering the external wastewater. The filtered reclaimed water is discharged through the MBR membrane element 8 and the bidirectional pressurization mechanism 9 for reuse. When the MBR membrane element 8 needs cleaning, the bidirectional pressurization mechanism 9 is activated to pressurize and inject water into the interior of the MBR membrane element 8 for backflushing. Simultaneously, the back-pressurized clean water enters the external flushing component 12 to flush the membrane surface from the outside of the MBR membrane element 8, achieving simultaneous internal and external flushing to ensure comprehensive cleaning of the membrane surface. The lifting mechanism 14 unwinds the membrane, and the lifting frame 10 slides down along the outside of the frame 7 under the action of gravity, thereby driving the porous cleaning tube 11 to descend. This achieves top-to-bottom flushing of the outside of the MBR membrane 8 and simultaneously flushes away the backwashed dirt, separating it from the membrane surface. When there is a lot of dirt, the lifting mechanism 14 can be activated to switch between unwinding and rewinding, driving the lifting frame 10 to move vertically back and forth, achieving multiple flushes. This enables the device to have the function of bidirectional synchronous cleaning of the inside and outside of the membrane, improving the cleaning effect on the membrane surface, making it more thorough and efficient, and improving the operating efficiency of the equipment. This solves the problem in the existing technology where separate backwashing is difficult to thoroughly clean the deep deposits on the MBR filter membrane, resulting in a shorter service life after backwashing and an increasingly higher cleaning frequency, thus reducing the operating efficiency of the equipment.

[0024] Please see Figure 1 The bidirectional pressurization mechanism 9 includes a bidirectional pump 91, an output pipe 92, and a diversion pipe 93. The bidirectional pump 91 is fixedly installed on the integrated housing 1. The right end of the bidirectional pump 91 is connected to an external water storage device through a pipe. The left end of the bidirectional pump 91 is fixedly connected to the output pipe 92. The output pipe 92 is connected to the MBR membrane element 8 through the diversion pipe 93.

[0025] In this invention, by starting the bidirectional pump 91, the MBR membrane element 8 is first operated in the forward direction, and the output pipe 92 and the diversion pipe 93 are used to form a negative pressure adsorption effect, which accelerates the entry of filtered water molecules, improves the filtration efficiency, and discharges the filtered regenerated water. When backwashing is required, the bidirectional pump 91 is started in the reverse direction to pressurize and input external purified water into the MBR membrane element 8 to form a backwashing effect.

[0026] Please see Figure 1 and Figure 2The external flushing assembly 12 includes an L-shaped conduit 121, a hose 122, a horizontal tube 123, and rotating joints 124 arranged at equal intervals. One end of the L-shaped conduit 121 is connected and fixed to the output tube 92. The top end of the hose 122 is fixedly connected to the left end of the L-shaped conduit 121. The bottom end of the hose 122 is fixedly connected to the horizontal tube 123. The rotating joints 124 are installed at equal intervals to the outside of the horizontal tube 123. One end of the porous cleaning tube 11 is installed on the rotating joint 124. The other end of the porous cleaning tube 11 is inserted to the other side of the frame 7 and rotatably connected to the lifting frame 10.

[0027] In this invention, purified water pressurized by the bidirectional pump 91 is introduced into the hose 122 through the L-shaped conduit 121 and then diverted to the interior of each porous cleaning tube 11 through the horizontal pipe 123 and the rotating joint 124, so as to achieve external rinsing of the membrane surface and simultaneous internal and external cleaning, thereby improving the cleaning efficiency of the membrane surface stains.

[0028] Please see Figure 1 The frame 7 has two rows of symmetrically distributed vertical grooves 71, and the porous cleaning pipe 11 runs through the vertical grooves 71 and rotates freely inside.

[0029] In this invention, the vertical groove 71 allows the porous cleaning pipe 11 to move smoothly vertically with the lifting frame 10, resulting in a reasonable structure.

[0030] Please see Figure 1 The integrated housing 1 has a sewage pump 13 installed at the bottom right side. The input end of the sewage pump 13 is connected to the inside of the MBR process tank 5 through a pipe, and the output end of the sewage pump 13 is connected to the external sludge treatment equipment.

[0031] In this invention, the sludge inside the MBR process tank 5 is discharged by starting the sewage pump 13, thereby achieving continuous sludge cleaning.

[0032] Please see Figure 2 The lifting mechanism 14 includes a servo motor 141, a rotating rod 142, and two steel wires 143. The servo motor 141 is installed on the back of the integrated housing 1. The output end of the servo motor 141 is fixedly connected to the rotating rod 142 through a coupling. One end of each of the two steel wires 143 is wrapped around and fixed to the outside of the rotating rod 142. The other ends of the two steel wires 143 extend to the left and right and are fixedly connected to the top of the lifting frame 10.

[0033] In this invention, the servo motor 141 is started to drive the rotating rod 142 to achieve bidirectional switchable rotation, so as to realize the winding and unwinding of the steel wire 143, thereby driving the lifting frame 10 to move vertically back and forth along the outside of the frame 7, so as to drive the porous cleaning tube 11 to achieve full coverage and repeated rinsing of the entire membrane surface, ensuring the cleaning effect.

[0034] Please see Figure 3 The frame 7 has vertical racks 15 that are spaced apart from the porous cleaning tube 11 and are fixedly installed on one side. The porous cleaning tube 11 has a toothed ring 16 that meshes with the vertical racks 15 and is fixedly connected to the outside of the porous cleaning tube 11.

[0035] In this invention, the toothed ring 16 on the porous cleaning tube 11 moves along the vertical rack 15 as it rises and falls, thereby driving the porous cleaning tube 11 to rotate, which makes the porous cleaning tube 11 more effective at rinsing and cleaning the membrane surface.

[0036] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A multi-stage AO-MBR coupled reclaimed water treatment device, comprising an integrated tank (1), wherein the interior of the integrated tank (1) is divided from left to right by partitions into interconnected anoxic tank (2), anaerobic tank (3), aerobic tank (4), and MBR process tank (5), characterized in that: A wastewater input pump (6) is fixedly installed on the top of the integrated tank (1). The output of the wastewater input pump (6) is connected to the interior of the anoxic tank (2). The input end of the wastewater input pump (6) is connected to an external sewage pipe. A frame (7) is fixedly installed inside the MBR process tank (5). MBR membrane elements (8) are inserted into the frame (7) at equal intervals. A bidirectional pressurization mechanism (9) connected to the MBR membrane elements (8) is installed on the top of the integrated tank (1). The frame (7) is slidably connected to a lifting frame (10), and a porous cleaning tube (11) is rotatably installed on the lifting frame (10). The porous cleaning tube (11) is arranged at intervals with the MBR membrane element (8). An external punching assembly (12) is installed on the lifting frame (10), and the external punching assembly (12) is connected and cooperates with the bidirectional pressurization mechanism (9). A lifting mechanism (14) is installed on the integrated box (1), and the lifting mechanism (14) is connected and cooperates with the lifting frame (10).

2. The multi-stage AO-MBR coupled reclaimed water treatment device according to claim 1, characterized in that: The bidirectional pressurization mechanism (9) includes a bidirectional pump (91), an output pipe (92), and a diversion pipe (93). The bidirectional pump (91) is fixedly installed on the integrated housing (1). The right end of the bidirectional pump (91) is connected to an external water storage device through a pipe. The left end of the bidirectional pump (91) is fixedly connected to the output pipe (92). The output pipe (92) is connected to the MBR membrane element (8) through the diversion pipe (93).

3. The multi-stage AO-MBR coupled reclaimed water treatment device according to claim 2, characterized in that: The external flushing assembly (12) includes an L-shaped conduit (121), a hose (122), a horizontal tube (123), and rotating joints (124) arranged at equal intervals. One end of the L-shaped conduit (121) is connected and fixed to the output tube (92). The top end of the hose (122) is fixedly connected to the left end of the L-shaped conduit (121). The bottom end of the hose (122) is fixedly connected to the horizontal tube (123). The rotating joints (124) are installed at equal intervals to the outside of the horizontal tube (123). One end of the porous cleaning tube (11) is installed on the rotating joint (124). The other end of the porous cleaning tube (11) is inserted into the other side of the frame (7) and rotatably connected to the lifting frame (10).

4. The multi-stage AO-MBR coupled reclaimed water treatment device according to claim 1, characterized in that: The frame (7) has two rows of symmetrically distributed vertical grooves (71), and the porous cleaning tube (11) passes through the vertical grooves (71) and rotates freely inside.

5. A multi-stage AO-MBR coupled reclaimed water treatment device according to claim 1, characterized in that: A sewage pump (13) is installed at the bottom right side of the integrated housing (1). The input end of the sewage pump (13) is connected to the inside of the MBR process tank (5) through a pipe, and the output end of the sewage pump (13) is connected to the external sludge treatment equipment.

6. The multi-stage AO-MBR coupled reclaimed water treatment device according to claim 1, characterized in that: The lifting mechanism (14) includes a servo motor (141), a rotating rod (142), and two steel wires (143). The servo motor (141) is installed on the back of the integrated housing (1). The output end of the servo motor (141) is fixedly connected to the rotating rod (142) through a coupling. One end of each of the two steel wires (143) is wrapped around and fixed to the outside of the rotating rod (142). The other ends of the two steel wires (143) extend to the left and right and are fixedly connected to the top of the lifting frame (10).

7. A multi-stage AO-MBR coupled reclaimed water treatment device according to claim 1, characterized in that: A vertical rack (15) is fixedly installed on one side of the frame (7) and spaced apart from the porous cleaning tube (11). A toothed ring (16) that meshes with the vertical rack (15) is fixedly connected to the outside of the porous cleaning tube (11).

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