Vacuum automatic water absorption device for MBR (Membrane Bioreactor) membrane

Abstract

The utility model relates to the technical field of MBR (Membrane Bioreactor) membranes, in particular to a vacuum automatic water absorption device for an MBR membrane. An MBR membrane vacuum automatic water suction device comprises a vacuum device, a flat-bottom cylindrical end socket is arranged above the vacuum device, the top of the end socket is respectively communicated with a water conduit and a vacuum pump connecting pipe, and the bottom of the end socket is communicated with a water outlet pipe; the input end of the water inlet branch pipe is communicated with the output end of the MBR membrane group, and the output end of the water inlet branch pipe is communicated with the top of one side of the vacuum device through a vacuum device water inlet header pipe; an overflow pipe is connected to the water diversion pipe in parallel, and the vacuum pump connecting pipe is provided with a vacuum control assembly. And the vacuum device realizes automatic suction of water produced by the MBR membrane group under the action of negative pressure. Multiple safety mechanisms such as double-valve design, overflow protection, liquid level monitoring and the like are adopted, and the fault risk of the system is reduced; the number of pump sets is reduced, and occupied space and investment cost are saved.

Description

Technical Field

[0001] This utility model relates to the field of MBR membrane technology, and more specifically to an MBR membrane vacuum automatic water suction device. Background Technology

[0002] MBR (Membrane Bio-Reactor) is a novel water treatment technology that combines membrane separation units with biological treatment units. It is used in wastewater treatment and water resource reuse. It primarily utilizes membrane separation technology to retain active bacteria and large organic molecules in wastewater, effectively achieving solid-liquid separation, significantly improving effluent quality, and reducing reactor volume.

[0003] Currently, MBR membrane systems are widely used in wastewater treatment, and their suction devices typically employ centrifugal pumps. Since MBR membranes generally operate for 6-8 minutes on and 1-2 minutes off, the pump sets need to be started and stopped frequently. Simultaneously, MBR membrane systems require air rinsing, necessitating the suction device to draw in a large amount of air. Due to air bubbles, the pump flow is unstable and prone to cavitation. Frequent start-stop cycles and cavitation make the pumps susceptible to failure and damage. Generally, each membrane system requires 2-3 pumps (2 in operation and 1 on standby); when there are many membrane systems, a larger number of pumps are needed, resulting in higher equipment investment and operating costs.

[0004] Therefore, providing an MBR membrane vacuum automatic water suction device that can improve system stability and effluent quality, reduce equipment investment and energy consumption, reduce frequent start-stop cycles, and enhance reliability is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide an MBR membrane vacuum automatic water suction device that can reduce the number of pump sets, save space and investment, ensure the air washing effect, and maintain system stability.

[0006] To achieve the above objectives, this utility model provides the following technical solution, mainly including:

[0007] An MBR membrane vacuum automatic water suction device includes:

[0008] A vacuum device is provided with a flat-bottomed cylindrical head on top. The top of the head is connected to the water inlet pipe and the vacuum pump pipe respectively, and the bottom is connected to the water outlet pipe.

[0009] The inlet branch pipe has its input end connected to the output end of the MBR membrane module, and its output end is connected to the top of one side of the vacuum unit through the vacuum unit's main inlet pipe.

[0010] An overflow pipe is connected in parallel to the water inlet pipe, and a vacuum control component is provided on the vacuum pump connector.

[0011] The vacuum device automatically draws in the permeate from the MBR membrane module through negative pressure.

[0012] Preferably, the water inlet branch pipe is provided with a first manual valve and a first pneumatic valve in sequence along the water flow direction, forming a water inlet regulating mechanism with two valves connected in series.

[0013] Preferably, the water inlet pipe is equipped with a water inlet pipe valve, and the overflow pipe is equipped with an overflow pipe valve.

[0014] Preferably, the vacuum pump connector is provided with a second manual valve and a solenoid valve in sequence along the gas flow direction.

[0015] Preferably, the water outlet pipe is equipped with a third manual valve and a second pneumatic valve, and a static pressure level sensor is installed between the third manual valve and the vacuum device.

[0016] Preferably, the vacuum control assembly includes a vacuum pump and a vacuum gauge. The flat-bottomed cylindrical head is equipped with a vacuum gauge. The vacuum unit is connected to the vacuum pump through a vacuum pump connector. The vacuum gauge is connected to the vacuum pump circuit.

[0017] As can be seen from the above technical solutions, compared with the prior art, this utility model adopts a dual-valve design, overflow protection, liquid level monitoring and other multiple safety mechanisms to reduce the risk of system failure. The combination design of manual valve and automatic valve takes into account the needs of daily operation and maintenance, shortens downtime, and uses negative pressure suction to replace the traditional water pump to reduce energy consumption. Vacuum degree closed-loop control optimizes water production efficiency, realizes one water suction device to correspond to multiple MBR membranes, reduces equipment investment and operating costs, and solves the problems of frequent start-stop and cavitation phenomena that cause water pump failure and damage. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1-Inlet branch pipe, 2-First manual valve, 3-First pneumatic valve, 4-Vacuum pump inlet main pipe, 5-Vacuum pump, 6-End cap, 7-Overflow valve, 8-Inlet valve, 9-Inlet pipe, 10-Second manual valve, 11-Solenoid valve, 12-Vacuum pump connection pipe, 13-Vacuum gauge, 14-Third manual valve, 15-Second pneumatic valve, 16-MBR membrane module, 17-Outlet pipe, 18-Static pressure level sensor, 19-Overflow pipe, 20-Vacuum pump. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example

[0023] An MBR membrane vacuum automatic water suction device, such as Figure 1 As shown, the vacuum device 5 has a flat-bottomed cylindrical end cap 6 on its top. The top of the end cap 6 is connected to the water inlet pipe 9 and the vacuum pump connector 12 respectively, and the bottom is connected to the water outlet pipe 17.

[0024] Water inlet branch pipe 1, the input end of water inlet branch pipe 1 is connected to the output end of MBR membrane module 16, and the output end of water inlet branch pipe 1 is connected to the top of one side of vacuum device 5 through vacuum device water inlet main pipe 4.

[0025] An overflow pipe 19 is connected in parallel to the water inlet pipe 9, and a vacuum control component is provided on the vacuum pump connector 12.

[0026] The vacuum device 5 achieves automatic suction of water produced by the MBR membrane module 16 through negative pressure.

[0027] To further optimize the above scheme, the water inlet branch pipe 1 is provided with a first manual valve 2 and a first pneumatic valve 3 in sequence along the water flow direction, forming a water inlet regulating mechanism with two valves connected in series.

[0028] To further optimize the above scheme, the water inlet pipe 9 is equipped with a water inlet pipe valve 8, and the overflow pipe 19 is equipped with an overflow pipe valve 7.

[0029] To further optimize the above scheme, the vacuum pump connector 12 is provided with a second manual valve 10 and a solenoid valve 11 in sequence along the gas flow direction.

[0030] To further optimize the above scheme, a third manual valve 14 and a second pneumatic valve 15 are provided on the water outlet pipe 17, and a static pressure level sensor 18 is installed between the third manual valve 14 and the vacuum device 5.

[0031] To further optimize the above scheme, the static pressure level sensor 18 monitors the liquid level in the vacuum 5 in real time, and achieves automated drainage and system safety protection through linkage control with the second pneumatic valve 15 of the water outlet pipe 17.

[0032] To further optimize the above scheme, the vacuum control component includes a vacuum pump 20 and a vacuum gauge 13. The flat-bottomed cylindrical head 6 is equipped with a vacuum gauge 13. The vacuum device 5 is connected to the vacuum pump 20 through the vacuum pump connector 12. The vacuum gauge 13 is electrically connected to the vacuum pump 20.

[0033] To further optimize the above scheme, this embodiment adopts a flat-bottomed cylindrical vacuum unit 5, with its top end cap 6 connected to the water inlet pipe 9 and the vacuum pump connector 12 respectively, and its bottom connected to the subsequent treatment unit through the water outlet pipe 17. The top of the side wall of the vacuum unit 5 is connected to the output end of the MBR membrane module 16 through the vacuum unit water inlet main pipe 4. The vacuum unit water inlet main pipe 4 is branched into two sets of water inlet branch pipes 1, and each set of branch pipes is connected in series with the first manual valve 2 (normally open) and the first pneumatic valve 3 (linked to the sewage tank level).

[0034] The water inlet pipe 9 is equipped with a second manual valve 10 and a parallel overflow pipe 19 (with an overflow valve 7 installed). The vacuum pump connection pipe 12 is sequentially equipped with a second manual valve 10 (normally open) and a solenoid valve 11 along the airflow direction. The vacuum gauge 13 is installed on the top end cap 6 of the vacuum device. The water outlet pipe 17 is equipped with a third manual valve 14 (normally open), a second pneumatic valve 15, and a static pressure level sensor 18.

[0035] Working principle: The vacuum unit 5 is a flat-bottomed cylindrical sealed container with a head 6. The vacuum pump connector 12 is connected to the vacuum unit 5. The main water inlet pipe 4 of the vacuum unit is connected to the MBR membrane module 16 through the branch water inlet pipe 1. The MBR membrane module 16 is immersed in the wastewater tank. The branch water inlet pipe 1 is equipped with a manual valve and a first pneumatic valve 3. The first pneumatic valve 3 is linked to the water level in the tank, closing when the water level is low and opening when the water level is high.

[0036] When vacuum pump 5 is first started, it is filled with water from the external water inlet pipe 9. After water overflows, the overflow pipe valve 7 and the water inlet pipe valve 8 are closed, and vacuum pump 20 is started. Vacuum pump 20 is automatically controlled by vacuum gauge 13. When the negative pressure is higher than the set value, the solenoid valve 11 on the vacuum pump connector 12 opens, and vacuum pump 20 runs synchronously. When the negative pressure is lower than the set value, solenoid valve 11 and vacuum pump 20 automatically close. A static pressure level sensor 18 is installed on the outlet pipe 17. When the liquid level is high, the second pneumatic valve 15 automatically opens; when the liquid level is low, the second pneumatic valve 15 automatically closes. The outlet water can flow by gravity or be connected to an external water pump depending on the subsequent unit requirements. The first manual valve 2, the second manual valve 10, and the third manual valve 14 are kept open and are only used during system maintenance.

[0037] Vacuum device 5 can automatically remove the air absorbed in the MBR membrane and automatically draw water using vacuum. The flow rate is stable and can be automatically adjusted, allowing one water absorption device to correspond to multiple MBR membranes, simplifying system configuration and automatic control of operation.

[0038] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0039] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A kind of MBR membrane vacuum automatic water suction device, it is characterized in that, The application relates to a water supply device for a membrane bioreactor (MBR) system. The vacuum device (5) is provided with a flat-bottomed cylindrical head (6) on the top, the top of the head (6) is communicated with a water guide pipe (9) and a vacuum pump connecting pipe (12) respectively, and the bottom is communicated with a water outlet pipe (17); The water inlet branch pipe (1) is communicated with the output end of the MBR membrane group (16) at the input end, and the output end of the water inlet branch pipe (1) is communicated with one side of the top of the vacuum device (5) through a vacuum device water inlet main pipe (4); The water guide pipe (9) is provided with a overflow pipe (19) in parallel, and the vacuum pump connecting pipe (12) is provided with a vacuum control assembly; The vacuum device (5) realizes automatic suction of water produced by the MBR membrane group (16) through negative pressure effect.

2. The MBR membrane vacuum automatic water suction device according to claim 1, characterized in that, The first manual valve (2) and the first pneumatic valve (3) are arranged in the water flow direction of the water inlet branch pipe (1) in sequence to form a double-valve series water inlet adjusting mechanism.

3. The automatic water suction device for MBR membrane according to claim 1, characterized in that, The water guide pipe (9) is provided with a water guide pipe valve (8), and the overflow pipe (19) is provided with an overflow pipe valve (7).

4. The automatic water suction device for MBR membrane according to claim 1, characterized in that, The second manual valve (10) and the electromagnetic valve (11) are arranged in the gas flow direction of the vacuum pump connecting pipe (12) in sequence.

5. The automatic water suction device for MBR membrane according to claim 1, characterized in that, The third manual valve (14) and the second pneumatic valve (15) are arranged on the water outlet pipe (17), and the static pressure liquid level sensor (18) is arranged between the third manual valve (14) and the vacuum device (5).

6. The automatic vacuum water suction device for MBR membrane according to claim 1, characterized in that, The vacuum control assembly comprises a vacuum pump (20) and a vacuum gauge (13), the flat-bottomed cylindrical head (6) is provided with the vacuum gauge (13), the vacuum device (5) is communicated with the vacuum pump (20) through the vacuum pump connecting pipe (12), and the vacuum gauge (13) is circuit-connected with the vacuum pump (20).

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