An integrated flocculation and vibration membrane filtration device and method for treating polluted water.

Abstract

This invention provides an integrated flocculation and vibrating membrane filtration system for treating polluted water. The system includes an integrated reaction tank, an inlet unit, a flocculant dosing unit, a stirring unit, a vibrating membrane unit, and an outlet unit. The integrated reaction tank is divided into a flow guiding zone and a filtration zone along the water flow direction by a guide plate. A water flow channel is provided between the guide plate and the bottom of the integrated reaction tank. The inlet unit is connected to the flow guiding zone. The flocculant dosing unit is also connected to the flow guiding zone. The stirring unit is located within the flow guiding zone. The vibrating membrane unit is located within the filtration zone. The outlet unit is connected to the outlet of the vibrating membrane unit, thereby improving the stability and efficiency of the entire water treatment system.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to an integrated flocculation and vibration membrane filtration device and method for treating polluted water. Background Technology

[0002] In traditional wastewater treatment processes, flocculation and membrane filtration are typically performed in separate steps, requiring independent flocculation tanks and membrane filtration units. This separate design has several significant drawbacks: firstly, it requires a large land area, increasing construction costs and land use pressure in today's increasingly scarce land resources; secondly, it consumes a lot of energy for water transport, as the long-distance transport from the flocculation tank to the membrane filtration unit requires a large amount of energy to maintain a stable water flow. More importantly, the flocs formed during flocculation are highly susceptible to sedimentation and loss or structural breakage during transport. Floc sedimentation and loss significantly reduce the flocculation effect, failing to fully utilize its adsorption and coagulation capabilities for pollutants in the water; while structural breakage reduces the particle size and density of the flocs, further affecting subsequent treatment results.

[0003] Although existing technologies have attempted to integrate flocculation and membrane filtration into the same device, they lack a reasonable and effective mechanism for zone division and water flow guidance and control. Specifically:

[0004] Traditional devices fail to clearly separate and define the flocculation zone and the filtration zone, resulting in chaotic water flow between the two zones without a clear path or direction.

[0005] The layout of the mixing and filtration units lacks scientific planning. After the mixing unit completes the mixing of flocculant and raw water, the mixture does not enter the filtration area in an orderly manner, but may spread or flow back, making it impossible to guarantee a stable water flow state.

[0006] When the filtration unit is working, the mixed liquid is prone to backflow into the guide area, causing water circulation disorder. This not only affects the flocculation effect but also interferes with the normal operation of the filtration process, reducing the stability and efficiency of the entire water treatment system. Summary of the Invention

[0007] The purpose of this invention is to address the shortcomings of existing technologies by providing an integrated flocculation and vibration membrane filtration system for treating polluted water. This system uses a guide plate to create a flow guiding zone and a filtration zone, and rationally sets up water flow channels to ensure the stable operation and efficient treatment of the entire integrated device.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A flocculation-vibrating membrane filtration integrated polluted water treatment device includes:

[0010] An integrated reaction tank is divided into a flow guiding zone and a filtration zone along the water flow direction by a flow guide plate, and a water flow channel is provided between the flow guide plate and the bottom of the integrated reaction tank.

[0011] A water inlet unit, which is connected to the flow guiding area;

[0012] A flocculant dosing unit, wherein the flocculant dosing unit is connected to the flow guiding zone;

[0013] A stirring unit is disposed within the flow guiding zone;

[0014] A vibrating membrane unit is disposed within the filtration zone;

[0015] The water outlet unit is connected to the water outlet of the vibrating diaphragm unit.

[0016] In a preferred embodiment, the cross-section of the guide plate is arc-shaped, having a convex surface and a concave surface formed by the arc-shaped structure, with the convex surface facing the stirring unit and the concave surface facing the vibrating diaphragm unit.

[0017] In a preferred embodiment, the vibrating diaphragm unit includes:

[0018] Vibration dynamics;

[0019] A membrane module, wherein the membrane module is arranged vertically within the filtration zone, the top of the membrane module is connected to the vibration power source, and the bottom of the membrane module is at a lower level than the bottom of the guide plate.

[0020] In a preferred embodiment, the membrane module is made of one or more of the following materials: polyvinylidene fluoride, polyethersulfone, polypropylene, polytetrafluoroethylene, alumina, silicon carbide, titanium oxide, silicon oxide, or zirconium oxide.

[0021] In a preferred embodiment, the flocculant is one or more of polyaluminum chloride, aluminum sulfate, ferrous sulfate, or a composite flocculant.

[0022] In a preferred embodiment, the membrane module is a flat sheet membrane or a hollow fiber membrane, and the pore size of the membrane module is 0.01-0.5 μm.

[0023] In a preferred embodiment, the bottom of the integrated reaction tank is provided with a sludge discharge outlet.

[0024] A method for treating contaminated water using an integrated flocculation and vibration membrane filtration system includes the following steps:

[0025] Raw water and flocculant are added to the flow guide zone of the integrated reaction tank;

[0026] The raw water and flocculant in the guide zone are mixed by the stirring unit to form a mixed liquid;

[0027] The mixture is guided into the filtration zone by a guide plate;

[0028] The vibration of the vibrating membrane unit drives the membrane module to vibrate, thereby filtering the mixed liquid to obtain clean water and sludge.

[0029] In a preferred embodiment, the vibration direction of the membrane module is one or more combinations of transverse, longitudinal, or constant-velocity gyratory vibration.

[0030] In a preferred embodiment, the vibration mode of the membrane module is one or a combination of intermittent vibration, continuous vibration, or variable frequency vibration.

[0031] In a preferred embodiment, the vibration power drives the membrane module to vibrate through an eccentric transmission mechanism, and the vibration impact is buffered by an elastic connector.

[0032] Compared with existing technologies, this technical solution has the following advantages:

[0033] The integrated reaction tank is divided into a flow guiding zone and a filtration zone by the flow guide plate, and a water flow channel is provided between the flow guide plate and the bottom of the integrated reaction tank, so that the water flow has a clear path and direction between the two zones, avoiding the problem of chaotic water flow, ensuring the orderly flow of water in the device, and improving the stability and efficiency of the entire water treatment system.

[0034] The stirring unit is placed in the flow guiding zone. After the flocculant and raw water are mixed to form flocs, the mixture can enter the vibrating membrane unit in the filtration zone in an orderly manner through the water flow channel for filtration, ensuring a stable water flow state and improving water treatment efficiency.

[0035] Within the same reaction zone, after the flocculant is added, there is no need to wait for the flocs to form completely. The shear force generated by the vibrating membrane assembly can act directly on the flocs, maintaining a moderately loose structure through dynamic shearing. This unique mechanism prevents the flocs from forming a dense deposition layer on the membrane surface and promotes the self-cleaning of already attached pollutants through shearing and peeling. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of the integrated flocculation and vibration membrane filtration polluted water treatment device of the present invention.

[0037] In the diagram: 100 Integrated reaction tank, 100a Flow guide zone, 100b Filtration zone, 100c Water flow channel, 110 Baffle plate, 111 Convex surface, 112 Concave surface, 120 Sludge discharge outlet, 200 Inlet water unit, 210 Inlet water pipe, 220 Booster pump, 300 Flocculant dosing unit, 400 Mixing unit, 410 Mixing paddle, 420 Mixing power, 500 Vibrating membrane unit, 510 Membrane module, 520 Vibration power, 600 Outlet water unit, 610 Outlet water pipe, 620 Suction pump. Detailed Implementation

[0038] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0039] First Embodiment

[0040] Please refer to Figure 1 An embodiment of the present invention provides an integrated flocculation and vibration membrane filtration polluted water treatment device, comprising:

[0041] An integrated reaction tank 100 is divided into a flow guiding zone 100a and a filtration zone 100b along the water flow direction by a flow guide plate 110. A water flow channel 100c is provided between the flow guide plate 110 and the bottom of the integrated reaction tank 100.

[0042] Water inlet unit 200, which is connected to the flow guiding area 100a;

[0043] Flocculant dosing unit 300, which is connected to the flow guiding zone 100a;

[0044] A stirring unit 400 is disposed within the flow guiding zone 100a;

[0045] A vibrating membrane unit 500 is disposed within the filtration zone 100b;

[0046] Water outlet unit 600 is connected to the water outlet of the vibrating diaphragm unit 500.

[0047] The integrated reaction tank 100 is divided into a flow guiding zone 100a and a filtration zone 100b by the flow guide plate 110. A water flow channel 100c is provided between the flow guide plate 110 and the bottom of the integrated reaction tank 100, which rationally plans the water flow path, giving the water a clear path and direction between the two zones. This avoids the problem of chaotic water flow, ensures the orderly flow of water within the device, and improves the stability and efficiency of the entire water treatment system. At the same time, the stirring unit 400 is set in the flow guiding zone 100a. After the flocculant and raw water are mixed to form flocs, the mixture can enter the vibrating membrane unit 500 in the filtration zone 100b in an orderly manner through the water flow channel 100c for filtration, ensuring a stable water flow state and improving water treatment efficiency.

[0048] like Figure 1 As shown, the cross-section of the guide plate 110 is arc-shaped, with a convex surface 111 and a concave surface 112 formed by the arc structure. The convex surface 111 faces the stirring unit 400, and the concave surface 112 faces the vibrating diaphragm unit 500.

[0049] When the stirring unit 400 mixes the raw water and flocculant, the water flow during the mixing process will not directly rush into the filtration zone 100b due to the blocking effect of the guide plate 110. This effectively avoids the interference of insufficiently mixed water flow with the normal operation of the filtration zone, ensuring the sufficiency and stability of the flocculation process. As the stirring continues, the mixed liquid flows smoothly along the convex surface 111 of the guide plate 110 under the power generated by the stirring and the natural flow trend of the water in the device. It then enters the filtration zone 100b in an orderly and slow manner from the water flow channel 100c between the lower end of the guide plate 110 and the bottom of the integrated reaction tank 100, avoiding direct impact on the membrane module 510 of the vibrating membrane unit 500.

[0050] After entering the filtration zone 100b, the mixed liquid passes through the vibrating membrane unit 500 from bottom to top. During this process, the vibrating membrane unit 500 vibrates the mixed liquid to enhance the filtration effect and improve the interception and separation capacity of pollutants. The concave surface 112 of the guide plate 110 plays an important role in preventing backflow. Its curved shape can change the direction and velocity distribution of the water flow, forming an effective barrier to prevent the mixed liquid from returning to the guide zone 100a under the action of vibration. This avoids water flow turbulence, ensures the continuity and stability of the filtration process, and further improves the operating efficiency and treatment effect of the entire water treatment system.

[0051] refer to Figure 1 The bottom of the integrated reaction tank 100 is provided with a sludge discharge port 120.

[0052] The vibrating membrane unit 500 vibrates the mixed liquid, achieving solid-liquid separation to obtain clean water and sludge. The clean water is discharged through the effluent unit 600. The sludge gradually sinks due to gravity and settles at the bottom of the integrated reaction tank 100.

[0053] The bottom of the integrated reaction tank 100 is designed in a conical shape, which allows the sludge to naturally converge towards the center of the bottom, greatly improving the sludge deposition efficiency at the bottom. Additionally, the sludge discharge outlet 120 is equipped with a valve for opening and closing.

[0054] like Figure 1 As shown, the water inlet unit 200 includes a water inlet pipe 210, which is connected to the diversion zone 100a to introduce raw water from the waterworks into the diversion zone 100a.

[0055] The inlet pipe 210 is equipped with a booster pump 220, which can pressurize the raw water according to actual needs to ensure that the raw water enters the guide zone 100a with a stable and appropriate pressure and flow rate. The inlet pipe 210 is also equipped with a flow meter for real-time monitoring of the flow rate.

[0056] The inlet pipe 210 is connected to the upper end of the guide zone 100a. This design allows the raw water to enter the guide zone 100a from above, making full use of gravity to allow the water to flow naturally downwards. At the same time, the flocculant dosing unit 300 adds flocculant vertically to the guide zone 100a from above. This arrangement allows the raw water and flocculant to achieve a natural mixing trend from top to bottom within the guide zone 100a, creating favorable conditions for thorough mixing under the action of the stirring unit 400.

[0057] After the raw water and flocculant enter the guide zone 100a, the stirring unit 400 starts working, vigorously stirring the two to ensure they are fully mixed and form flocs. A water flow channel 100c is provided between the guide plate 110 and the bottom of the integrated reaction tank 100, with its convex surface 111 facing the stirring unit 400. During stirring by the stirring unit 400, the convex surface 111 effectively prevents the mixed liquid from directly entering the filtration zone 100b, avoiding interference from insufficiently mixed liquid and ensuring the sufficiency and stability of the flocculation process. Simultaneously, the shape of the convex surface 111 guides the mixed liquid to flow smoothly along its surface and orderly enter the filtration zone 100b through the water flow channel 100c, achieving reasonable guidance and orderly flow of water between the guide zone 100a and the filtration zone 100b, further improving the efficiency and stability of the entire water treatment system.

[0058] like Figure 1 As shown, the flocculant dosing unit 300 includes:

[0059] Dosing tube;

[0060] A metering pump is installed on the dosing pipe.

[0061] The dosing pipe is located above the flow guiding zone 100a, so that the flocculant can be added from above into the flow guiding zone 100a, forming a good convergence trend with the raw water introduced from the inlet pipe 210 and flowing from top to bottom.

[0062] The metering pump has the function of accurately metering and stably delivering liquid. During operation, it can precisely control the flow rate of flocculant through the dosing pipe according to preset parameters. The flocculant dosing unit 300 has the ability to dynamically adjust the dosage. In actual operation, the operator can adjust the parameters of the metering pump in real time according to changes in the raw water quality, such as fluctuations in suspended solids content and turbidity, as well as changes in the raw water flow rate, thereby dynamically changing the flocculant dosage.

[0063] like Figure 1 As shown, the stirring unit 400 includes:

[0064] Stirring power 420;

[0065] A stirring paddle 410, the top of which is connected to the stirring power 420.

[0066] The stirring power 420 is located above the stirring paddle 410. The stirring power 420 can be an electric motor, which drives the stirring paddle 410 to rotate, and is used to stir and mix the flocculant and raw water.

[0067] The number of stirring paddles 410 can be multiple and arranged in a vertical direction. That is, the stirring power 420 drives multiple vertically arranged stirring paddles 410 to rotate, so as to ensure that the flocculant and raw water are fully and efficiently mixed.

[0068] refer to Figure 1 The bottom of the stirring unit 400 is slightly higher than the bottom of the guide plate 110.

[0069] During the stirring process, the stirring unit 400 can effectively stir the liquid over a large area within the guide zone 100a, ensuring that the raw water and flocculant are fully mixed within the guide zone 100a to form a uniform and stable mixture. Simultaneously, this height difference design allows the mixture to flow more smoothly downwards along the convex surface 111 of the guide plate 110 after stirring, and enter the filtration zone 100b through the water flow channel 100c between the guide plate 110 and the bottom of the integrated reaction tank 100.

[0070] like Figure 1As shown, the vibrating diaphragm unit 500 includes:

[0071] Vibration power 520;

[0072] Membrane module 510, which is vertically arranged in the filtration zone 100b, and the top of the membrane module 510 is connected to the vibration power 520.

[0073] In addition, the vibrating membrane unit 500 is also provided with a water outlet, which is connected to the membrane assembly 510 to provide a channel for the clear water after solid-liquid separation.

[0074] The vibration power source 520 is typically a motor or similar device, installed above the membrane module 510. Once activated, the rotational motion output by the vibration power source 520 is converted into vibration of the membrane module 510 via a specific transmission mechanism, such as an eccentric wheel or connecting rod. This vibration is not a simple unidirectional motion, but rather can drive the membrane module 510 to vibrate laterally, longitudinally, or at a constant speed.

[0075] Taking lateral vibration as an example, the motor drives the eccentric wheel to rotate at high speed. The eccentricity of the eccentric wheel causes the connecting rod connected to it to produce reciprocating linear motion, which in turn drives the membrane module 510 to periodically swing left and right in the horizontal direction. Longitudinal vibration is achieved by changing the design of the transmission mechanism, causing the membrane module 510 to vibrate up and down in the vertical direction. Constant velocity gyratory vibration combines the characteristics of lateral and longitudinal motion, allowing the membrane module 510 to perform complex gyratory motion in three-dimensional space.

[0076] Meanwhile, to prevent damage to the tank structure from the strong impact force generated by membrane module vibration, the vibration device is specially equipped with elastic connectors. These elastic connectors are made of high-elasticity, fatigue-resistant, high-quality materials, providing excellent buffering and shock absorption performance. They absorb and disperse most of the vibration energy during membrane module vibration, minimizing the impact on the tank and ensuring the stable operation of the entire filtration system.

[0077] When the membrane module 510 undergoes periodic motion driven by the vibration power 520, sinusoidal shear waves are generated on the membrane surface. These shear waves originate from the interaction between the vibrating membrane module 510 and the mixed liquid. Taking the lateral vibration of the membrane module 510 as an example, when the membrane module 510 swings to the left, the membrane surface compresses the mixed liquid on the left, causing it to flow to the left; simultaneously, the mixed liquid on the right exerts a rightward pull relative to the membrane surface. The opposite occurs when the membrane module 510 swings to the right. This periodic left-right oscillation causes the mixed liquid near the membrane surface to exhibit alternating flow velocities and directions, thus forming sinusoidal shear waves.

[0078] Sine shear waves play a crucial role in membrane filtration. On one hand, they effectively prevent particulate matter deposition on the membrane surface. In traditional static membrane filtration, particulate matter in the mixed liquor gradually deposits on the membrane surface under gravity and membrane adsorption, forming a thick layer of fouling and causing a sharp drop in membrane flux. The shear force generated by sinusoidal shear waves can disrupt the adhesion between particulate matter and the membrane surface, making it difficult for particulate matter to deposit stably. On the other hand, for substances already deposited on the membrane surface, sinusoidal shear waves can also remove them and return them to the feed solution for reuse in the filtration cycle.

[0079] The membrane module 510 is vertically arranged within the filtration zone 100b, which makes full use of the space in the filtration zone 100b, allowing for a larger membrane area to be arranged within a limited space, thereby improving treatment efficiency. Moreover, the vertical arrangement facilitates the uniform distribution of the mixed liquid on the surface of the membrane module 510, enabling each part of the membrane to fully perform its filtration function and avoiding problems such as local clogging or uneven filtration.

[0080] The bottom of the membrane module 510 is at a lower level than the bottom of the guide plate 110. During operation, the mixed liquor after flocculation treatment in the guide zone 100a enters the filtration zone 100b. Due to the lower bottom position of the membrane module 510, it can make more thorough contact with the mixed liquor, allowing the flocs and water in the mixed liquor to achieve initial separation under gravity and membrane filtration. Under the action of pressure difference, water passes through the pores on the membrane module 510. These pores are 0.01-0.5μm in size, allowing only water molecules and small molecules to pass through, while blocking large particles such as sludge from the outside of the membrane module. The filtered clean water flows along the channels inside the membrane module 510 to the outlet, and is discharged from the outlet into the effluent unit 600. The sludge blocked outside the membrane module gradually sinks under gravity and accumulates at the bottom of the integrated reaction tank 100. It is discharged from the system through periodic sludge removal operations, thereby achieving efficient solid-liquid separation.

[0081] The membrane module 510 is a flat sheet membrane. The flat sheet membrane has a smooth surface, and a certain spacing can be provided between the membrane sheets to facilitate the flow of the mixed liquor and the discharge of sludge, reducing the risk of membrane module clogging. The material of the flat sheet membrane is selected from one or more of polyvinylidene fluoride, polyethersulfone, polypropylene, and polytetrafluoroethylene. Alternatively, the flat sheet membrane may be made of ceramic material, such as one or more of alumina, silicon carbide, titanium oxide, silicon dioxide, or zirconium oxide.

[0082] The membrane module 510 is a hollow fiber membrane. The hollow fiber membrane is composed of a large number of fine hollow fibers, providing a large membrane filtration area within a limited space, thereby greatly improving processing capacity. The hollow fiber membrane is selected from one or more of polyvinylidene fluoride, polyethersulfone, polypropylene, and polytetrafluoroethylene.

[0083] The outlet of the vibrating membrane unit 500 is located at the upper end of the membrane assembly 510.

[0084] like Figure 1 As shown, the water outlet unit 600 includes:

[0085] Water outlet pipe 610, which is connected to the water outlet of the vibrating diaphragm unit 500.

[0086] A suction pump 620 is installed on the outlet pipe 610. The clear water filtered by the vibrating membrane unit 500 is discharged from its outlet and output through the outlet pipe 610 via the suction pump 620. The filtration flux is 10-200 L / (m²). 2 (·h), the suction negative pressure is 0.01-0.1 MPa.

[0087] In summary, the integrated reaction tank 100 is divided into a flow guiding zone 100a and a filtration zone 100b by the flow guide plate 110, and a water flow channel 100c is provided between the flow guide plate 110 and the bottom of the integrated reaction tank 100. This ensures that the water flow has a clear path and direction between the two zones, avoiding chaotic water flow and guaranteeing orderly water flow within the device, thereby improving the stability and efficiency of the entire water treatment system. Simultaneously, the stirring unit 400 is placed in the flow guiding zone 100a. After the flocculant and raw water are mixed to form flocs, the mixture can orderly enter the vibrating membrane unit 500 in the filtration zone 100b through the water flow channel 100c for filtration, ensuring a stable water flow state and improving water treatment efficiency. Within the same reaction zone, after the flocculant is added, there is no need to wait for the flocs to form completely; the shear force generated by the vibrating membrane assembly can directly act on the flocs, maintaining a moderately loose structure through dynamic shearing. This unique mechanism prevents flocs from forming a dense deposition layer on the membrane surface, while simultaneously promoting the self-cleaning of already attached pollutants through shearing and peeling.

[0088] Second Embodiment

[0089] refer to Figure 1 The first embodiment of the integrated flocculation and vibration membrane filtration method for treating polluted water includes the following steps:

[0090] S100, Raw water and flocculant are added to the guide zone 100a of the integrated reaction tank 100;

[0091] S200: The raw water and flocculant in the guide zone 100a are mixed by the stirring unit 400 to form a mixed liquid containing flocs;

[0092] S300, the mixture is guided into the filtration zone 100b via the guide plate 110;

[0093] S400, the vibration power 520 of the vibrating membrane unit 500 drives the membrane module 510 to vibrate, thereby filtering the mixed liquid to obtain clean water and sludge.

[0094] In step S100, the raw water is introduced into the flow guidance zone 100a through the water inlet unit 200. The flocculant is added to the flow guidance zone 100a in proportion through the flocculant dosing unit 300.

[0095] The raw water comes from the municipal waterworks, with a turbidity of 4-25 NTU, a total organic carbon (TOC) of 4-7 mg / L, and a permanganate index of 3-5 mg / L. Turbidity is an indicator of the amount of suspended particulate matter in water; TOC reflects the content of organic matter in the water; and the permanganate index reflects the total amount of organic and inorganic matter in the water that can be oxidized by potassium permanganate.

[0096] The filtered water has a turbidity of 0.2-0.8 NTU, a TOC of 1.5-4 mg / L, and a permanganate index of 1.5-2.5 mg / L.

[0097] The flocculant is one or more of polyaluminum chloride, aluminum sulfate, ferrous sulfate, or a composite flocculant. The concentration of the flocculant is 5 mg / L-100 mg / L.

[0098] In step S200, the stirring unit 400 rotates at a speed of 60 r / min.

[0099] In step S400, the vibration direction of the membrane assembly 510 is one or more combinations of transverse, longitudinal, or constant-velocity gyratory vibration.

[0100] The vibration power 520 drives the membrane module 510 to vibrate at a frequency of 0–15 Hz and an amplitude of 0.5–5 cm. The vibration mode of the membrane module 510 is one or more combinations of intermittent vibration, continuous vibration, or variable frequency vibration. Taking intermittent vibration as an example, the vibration time is 10 s and the rest time is 10 min.

[0101] Following step S400, the method further includes the following steps:

[0102] S500, the clean water is delivered by the effluent unit 600, and the sludge is deposited at the bottom of the integrated reaction tank 100.

[0103] The embodiments described above are only used to illustrate the technical ideas and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. The scope of patent application of the present invention should not be limited by these embodiments. That is, any equivalent changes or modifications made in accordance with the spirit disclosed in the present invention still fall within the patent scope of the present invention.

Claims

1. A flocculation-vibration membrane filtration integrated polluted water treatment device, characterized in that, include: An integrated reaction tank (100) is divided into a flow guiding zone (100a) and a filtration zone (100b) along the water flow direction by a flow guide plate (110). A water flow channel (100c) is provided between the flow guide plate (110) and the bottom of the integrated reaction tank (100). A water inlet unit (200) is connected to the flow guiding area (100a); A flocculant dosing unit (300) is connected to the flow guiding zone (100a); A stirring unit (400) is disposed within the flow guiding zone (100a); A vibrating membrane unit (500) is disposed within the filtration zone (100b); A water outlet unit (600) is connected to the water outlet of the vibrating diaphragm unit (500); The cross-section of the guide plate (110) is arc-shaped, with a convex surface (111) and a concave surface (112) formed by the arc structure. The convex surface (111) faces the stirring unit (400), and the concave surface (112) faces the vibrating diaphragm unit (500). The vibrating diaphragm unit (500) includes a diaphragm assembly (510), the bottom of which is at a lower level than the bottom of the guide plate (110).

2. The integrated flocculation and vibration membrane filtration wastewater treatment device as described in claim 1, characterized in that, The vibrating diaphragm unit (500) includes a vibration power source (520); The membrane module (510) is arranged vertically within the filtration zone (100b), and the top of the membrane module (510) is connected to the vibration power (520).

3. The integrated flocculation and vibration membrane filtration wastewater treatment device as described in claim 2, characterized in that, The membrane module (510) is made of one or more of the following materials: polyvinylidene fluoride, polyethersulfone, polypropylene, polytetrafluoroethylene, alumina, silicon carbide, titanium oxide, silicon oxide, or zirconium oxide.

4. The integrated flocculation and vibration membrane filtration wastewater treatment device as described in claim 1, characterized in that, The flocculant is one or more of polyaluminum chloride, aluminum sulfate, ferrous sulfate, or a composite flocculant.

5. The integrated flocculation and vibration membrane filtration wastewater treatment device as described in claim 2, characterized in that, The membrane module (510) is a flat sheet membrane or a hollow fiber membrane, and the pore size of the membrane module (510) is 0.01-0.5μm.

6. The integrated flocculation and vibration membrane filtration wastewater treatment device as described in claim 1, characterized in that, The bottom of the integrated reaction tank (100) is provided with a sludge discharge port (120).

7. A treatment method using the integrated flocculation and vibration membrane filtration wastewater treatment device as described in any one of claims 1 to 6, characterized in that, Includes the following steps: Raw water and flocculant are added to the guide zone (100a) of the integrated reaction tank (100). The raw water and flocculant in the guide zone (100a) are mixed by the stirring unit (400) to form a mixed liquid; The mixture is guided into the filtration zone (100b) via the guide plate (110); The membrane module (510) is driven to vibrate by the vibration power (520) of the vibrating membrane unit (500) to filter the mixed liquid and obtain clean water and sludge.

8. The integrated flocculation and vibration membrane filtration method for treating polluted water as described in claim 7, characterized in that, The vibration direction of the membrane module (510) is one or more combinations of transverse, longitudinal, or constant velocity gyratory vibration.

9. The integrated flocculation and vibration membrane filtration method for treating polluted water as described in claim 7, characterized in that, The vibration mode of the membrane module (510) is one or more combinations of intermittent vibration, continuous vibration, or frequency-varying vibration.

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