MABR coupled photocatalytic oxidation sewage treatment equipment

Abstract

The invention provides sewage treatment equipment for MABR coupled photocatalytic oxidation. The sewage treatment equipment for MABR coupled photocatalytic oxidation comprises a treatment chamber, a membrane bundle, a membrane gas supply assembly and a light source, the treatment chamber is provided with an inlet and an outlet, the membrane bundle comprises a plurality of membrane filaments, photocatalytic material layers are arranged on the surfaces of the membrane filaments, at least part of the membrane bundle is arranged in the treatment chamber, the membrane gas supply assembly is connected with the membrane bundle, and the light source is used for irradiating the membrane bundle. According to the sewage treatment equipment for coupling the MABR with the photocatalytic oxidation, the biological denitrification process and the mineralization and chain scission process of the refractory organic matters can be synchronously and synergistically carried out in the treatment chamber and are mutually matched to mutually improve the efficiency, so that the energy consumption of the membrane gas supply assembly and the feeding amount of a carbon source medicament can be reduced; meanwhile, the sewage treatment equipment is simple in structure and small in size, and installation and operation of the sewage treatment equipment are facilitated.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment, and more specifically to a wastewater treatment device that uses MABR coupled with photocatalytic oxidation. Background Technology

[0002] MABR (Membrane Aerated Biofilm Reactor) combines a gas separation membrane with a biofilm reactor, utilizing the membrane's permeability to provide oxygen to microorganisms. Through the synergistic effect of bubble-free aeration and the biofilm, it achieves highly efficient wastewater treatment.

[0003] Photocatalytic oxidation wastewater treatment technology utilizes photocatalysts to oxidize and decompose organic and some inorganic substances in wastewater into harmless substances under light conditions.

[0004] In related technologies, wastewater treatment equipment integrates MABR units and photocatalytic oxidation units via external or internal circulation, enabling them to work together to treat wastewater and improve treatment effectiveness and efficiency. However, in both external and internal circulation methods, the MABR unit and photocatalytic oxidation unit essentially exist and operate independently, without effective coordination. Therefore, in actual wastewater treatment, the improvement in effectiveness and efficiency is minimal. Furthermore, these methods result in larger wastewater treatment equipment sizes, which is detrimental to installation and operation. Summary of the Invention

[0005] The present invention aims to at least partially solve one of the technical problems in the related art.

[0006] Therefore, embodiments of the present invention propose a wastewater treatment device that uses MABR coupled with photocatalytic oxidation.

[0007] The wastewater treatment device of MABR coupled photocatalytic oxidation according to an embodiment of the present invention includes: A processing chamber, wherein the processing chamber is provided with an inlet and an outlet; A membrane bundle, comprising a plurality of membrane filaments, wherein the surface of the membrane filaments is provided with a photocatalytic material layer, and at least a portion of the membrane bundle is disposed within the processing chamber; A membrane gas supply assembly, wherein the membrane gas supply assembly is connected to the membrane bundle; A light source for illuminating the membrane bundle.

[0008] In this embodiment of the invention, a MABR-coupled photocatalytic oxidation wastewater treatment device allows wastewater to pass through a treatment chamber and come into contact with the membrane bundle. A membrane gas supply component supplies gases such as air or oxygen to the membrane filaments, enabling biological denitrification of the wastewater. A light source irradiates the membrane bundle, causing the photocatalytic material layer on the membrane filament surface to undergo a photocatalytic oxidation reaction. Simultaneously, the photocatalytic oxidation reaction increases the B / C ratio of the wastewater, reduces biotoxicity, enhances the antifouling ability of the membrane filaments, and promotes the formation of a stratified biological community, thereby improving the efficiency of biological denitrification. The efficient oxygen mass transfer achieved by the membrane filaments promotes the capture of oxygen by the photocatalytic material layer, resulting in a stronger... By enhancing the superoxide radical generation potential, the efficiency of photocatalytic oxidation reaction is improved, and the mineralization and chain scission of recalcitrant organic matter are strengthened. This allows the biological denitrification process and the mineralization and chain scission process of recalcitrant organic matter to occur simultaneously and synergistically within the treatment chamber, complementing each other to improve efficiency. Consequently, the membrane aeration volume and carbon source reagent consumption can be reduced, thereby reducing the energy consumption of the membrane aeration components and the amount of carbon source reagent required. Furthermore, since the biological denitrification process and the mineralization and chain scission process of recalcitrant organic matter are carried out simultaneously within the treatment chamber, the wastewater treatment equipment has a simple structure and small size, facilitating its installation and operation.

[0009] In some embodiments, the MABR-coupled photocatalytic oxidation wastewater treatment device further includes a housing, the inner cavity of which includes a separated wastewater zone and a clean water zone. The housing is provided with a plurality of treatment chambers, the wastewater zone is connected to the inlet of the treatment chamber, and the clean water zone is connected to the outlet of the treatment chamber. The plurality of treatment chambers are arranged around the outer periphery of the light source, or the light source is arranged around the outer periphery of the plurality of treatment chambers. The sidewalls of the treatment chambers facing at least the light source are made transparent.

[0010] In some embodiments, the MABR coupled photocatalytic oxidation wastewater treatment equipment further includes a rotating assembly, which is provided with a plurality of the treatment chambers. The rotating assembly is used to drive the plurality of treatment chambers to rotate around the light source, or the rotating assembly is used to drive the plurality of treatment chambers to rotate within the space surrounded by the light source.

[0011] In some embodiments, the rotating assembly includes a turntable and a chamber container. The turntable divides the inner cavity of the housing into a wastewater zone and a clean water zone. The turntable is rotatable and the inner cavity of the chamber container forms the processing chamber. There are multiple chamber containers disposed on the turntable and arranged at intervals around the rotation axis of the turntable. At least one sidewall of the chamber container is made transparent.

[0012] In some embodiments, the chamber container is a cover, which covers the end face of the turntable so that the inner cavity of the chamber container forms the processing chamber. The turntable is provided with a plurality of first through holes corresponding to the chamber container and forming the entrance of the processing chamber. The end of the chamber container away from the turntable is provided with a plurality of second through holes forming the outlet of the processing chamber.

[0013] In some embodiments, the MABR coupled photocatalytic oxidation wastewater treatment equipment further includes a guide plate, and the rotating assembly further includes a rotating shaft connected to the turntable to drive the turntable to rotate. The guide plate is disposed on the inner circumferential surface of the housing, located between the inner circumferential surface of the housing and the turntable, and surrounds the outer circumference of the turntable. The guide plate extends along the direction from the wastewater zone to the clean water zone and is inclined along the direction from the inner circumferential surface of the housing towards the turntable. A water-proof layer is provided at one end of the guide plate facing the turntable.

[0014] In some embodiments, the MABR-coupled photocatalytic oxidation wastewater treatment equipment further includes a water-isolating container disposed within the water purification zone. The water-isolating container contains the light source to isolate the light source from the liquid in the water purification zone. At least the portion of the water-isolating container between the light source and the treatment chamber is made transparent.

[0015] In some embodiments, the MABR coupled photocatalytic oxidation wastewater treatment equipment further includes a membrane exhaust assembly. The membrane bundles are provided with an inlet end and an exhaust end. The inlet end and the outlet of the treatment chamber are located at the first end of the treatment chamber, and the exhaust end and the inlet of the treatment chamber are located at the second end of the treatment chamber. The inlets of multiple membrane bundles are all connected to the membrane air supply assembly, and the exhaust ends of multiple membrane bundles are all connected to the membrane exhaust assembly. The exhaust port of the membrane exhaust assembly is located outside the housing. The membrane air supply assembly and the membrane exhaust assembly rotate synchronously with the rotating assembly.

[0016] In some embodiments, the membrane bundle includes an air inlet connector, an air outlet connector, and a plurality of membrane filaments. The air inlet connector is located at a first end of the processing chamber and communicates with the membrane air supply assembly. The air outlet connector is located at a second end of the processing chamber and communicates with the membrane air exhaust assembly. The plurality of membrane filaments are arranged in a ring and communicate between the air inlet connector and the air outlet connector.

[0017] In some embodiments, the MABR coupled photocatalytic oxidation wastewater treatment equipment further includes an air-rubbed tube and an air-supply assembly. The air-supply assembly is connected to the air-rubbed tube. The air-rubbed tube is located below the plurality of treatment chambers and has an air hole below the inlet of each treatment chamber. Both the air-rubbed tube and the air-supply assembly rotate synchronously with the rotating assembly.

[0018] In some embodiments, the MABR coupled photocatalytic oxidation wastewater treatment equipment further includes a return pipe. The outer shell is provided with a total inlet, a total outlet, and a return port. The total inlet is connected to the wastewater zone and is lower than the inlet of the treatment chamber. The total outlet and the return port are both connected to the clean water zone and are higher than the outlet of the treatment chamber. The total inlet and the total outlet are arranged opposite each other in the horizontal direction. The return pipe connects the return port and the total inlet.

[0019] In some embodiments, the bottom surface of the housing is configured as a cone with a cross-section decreasing from top to bottom. The housing is provided with a main inlet and a slag discharge outlet. The main inlet is located on the side wall of the housing, and the slag discharge outlet is located at the lowest position of the bottom surface of the housing.

[0020] In some embodiments, the pores of the photocatalytic material layer are opposite to the venting channels of the membrane filaments. The photocatalytic material layer includes a coupling agent and a photocatalytic material. Based on the total mass of the photocatalytic material layer and the membrane filaments as 100%, the content of the photocatalytic material is 40% to 60%, and / or the content of the coupling agent is 4% to 10%, and / or the content of the membrane filaments is 30% to 48%. Attached Figure Description

[0021] Figure 1 This is a front sectional view of a wastewater treatment device with MABR coupled photocatalytic oxidation according to an embodiment of the present invention; Figure 2 This is a top view of a portion of the MABR-coupled photocatalytic oxidation wastewater treatment device according to an embodiment of the present invention; Figure 3 yes Figure 1 An enlarged schematic diagram of part A in the middle; Figure 4 yes Figure 1 A schematic diagram of the transfer tray; Figure 5 yes Figure 1 Top view of the gas brushing tube; Figure 6 yes Figure 1 A schematic diagram of the top of the middle chamber container.

[0022] Figure label: 1. Outer shell; 11. Wastewater area; 12. Clean water area; 13. Main inlet; 14. Main outlet; 15. Overflow outlet; 16. Bottom surface; 17. Sludge discharge outlet; 2. Process the chamber; 3. Membrane bundle; 31. Membrane fiber; 32. Inlet connector; 33. Exhaust connector; 4. Membrane air supply assembly; 41. Membrane air supply branch pipe; 42. Membrane air supply loop pipe; 43. Membrane air supply fan; 44. Membrane air supply solenoid valve; 45. Membrane air supply vortex flow meter; 5. Light source; 6. Rotating assembly; 61. Turntable; 611. First through hole; 62. Chamber container; 621. Second through hole; 63. Rotating shaft; 7. Baffle plate; 71. Waterproof layer; 8. Waterproof container; 9. Membrane venting assembly; 91. Membrane venting main pipe; 92. Membrane venting ring pipe; 93. Membrane venting branch pipe; 10. Air-rubbed tube; 101. Air vent; 102. Air-rubbed branch tube; 103. Air-rubbed ring tube; 20. Pipeline gas supply assembly; 201. Pipeline gas supply main pipe; 202. Pipeline gas supply fan; 203. Pipeline gas supply solenoid valve; 204. Pipeline gas supply vortex flow meter; 30. Return pipe; 40. Electric valve; 50. Pipeline pump; 60. Electromagnetic flowmeter. Detailed Implementation

[0023] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0024] The following is for reference. Figures 1-6 The present invention is described in accordance with an embodiment.

[0025] like Figures 1-6 As shown, the wastewater treatment device of MABR coupled photocatalytic oxidation according to an embodiment of the present invention includes a treatment chamber 2, a membrane bundle 3, a membrane gas supply assembly 4, and a light source 5.

[0026] The treatment chamber 2 has an inlet and an outlet. Specifically, the inlet of the treatment chamber 2 is used for wastewater treatment, and the outlet of the treatment chamber 2 is used for the discharge of treated wastewater.

[0027] The membrane bundle 3 includes a plurality of membrane filaments 31, the surface of which is provided with a photocatalytic material layer. At least a portion of the membrane bundle 3 is disposed in the treatment chamber 2 to contact the wastewater in the treatment chamber 2.

[0028] The membrane aeration assembly 4 is connected to the membrane bundle 3. Specifically, the membrane aeration assembly 4 supplies gases such as air or oxygen into the interior of the membrane filaments 31 to achieve membrane aeration, thereby enabling biological denitrification of the wastewater in the treatment chamber 2.

[0029] The light source 5 is used to irradiate the membrane bundle 3. Specifically, the light source 5 irradiates the photocatalytic material layer on the surface of the membrane filament 31 so that the photocatalytic material layer can achieve a photocatalytic oxidation reaction, thereby mineralizing and breaking down the recalcitrant organic matter in the wastewater in the treatment chamber 2.

[0030] In the wastewater treatment device of the MABR coupled photocatalytic oxidation embodiment of the present invention, wastewater passes through the treatment chamber and comes into contact with the membrane bundle within the chamber. The membrane gas supply component supplies gases such as air or oxygen to the membrane filaments of the membrane bundle to enable biological denitrification of the wastewater. The light source irradiates the membrane bundle, causing the photocatalytic material layer on the surface of the membrane filaments to undergo a photocatalytic oxidation reaction in the wastewater. At the same time, the photocatalytic oxidation reaction can increase the B / C value of the wastewater, reduce biotoxicity, enhance the anti-fouling ability of the membrane filaments, and promote the generation of a stratified biological community system to improve the efficiency of biological denitrification. The high-efficiency oxygen mass transfer of the membrane filaments can promote the capture of oxygen by the photocatalytic material layer, enhance the superoxide radical generation potential, thereby improving the efficiency of the photocatalytic oxidation reaction, and enhance the mineralization and chain scission of recalcitrant organic matter. Thus, the biological denitrification process and the mineralization and chain scission process of recalcitrant organic matter can occur simultaneously and synergistically within the treatment chamber and complement each other to improve efficiency.

[0031] Since the biological denitrification process and the mineralization and chain breaking process of recalcitrant organic matter can enhance each other's efficiency, it is possible to further reduce the membrane aeration rate and carbon source agent consumption, thereby reducing the energy consumption of the membrane aeration unit and the amount of carbon source agent to be added.

[0032] Meanwhile, since the biological denitrification process and the mineralization and chain breaking process of recalcitrant organic matter are carried out simultaneously in the treatment chamber, compared with the external circulation method and internal circulation method in related technologies, the wastewater treatment equipment of MABR coupled photocatalytic oxidation in this embodiment of the invention has a simple structure and small size, which facilitates the installation and operation of wastewater treatment equipment.

[0033] In some embodiments, the pores of the photocatalytic material layer are opposite to the venting channels of the membrane fiber 31. The photocatalytic material layer includes a coupling agent and a photocatalytic material. Based on the total mass of the photocatalytic material layer and the membrane fiber 31 as 100%, the content of the photocatalytic material is 40% to 60%, and / or the content of the coupling agent is 4% to 10%, and / or the content of the membrane fiber 31 is 30% to 48%.

[0034] Specifically, the membrane fiber 31 has microscopic gas outlet channels, and the photocatalytic material layer has microscopic pores. The photocatalytic material layer is disposed on the surface of the membrane fiber 31, and the pores are opposite to and connected to the gas outlet channels. The membrane gas supply component 4 supplies a gas such as air or oxygen into the interior of the membrane fiber 31. The gas passes through the gas outlet channels and pores in sequence and is discharged, thereby realizing membrane aeration, and the photocatalytic oxidation reaction is carried out by the photocatalytic material layer at the pores.

[0035] The pores and outlet channels are opposite to and connected to each other, which can prevent the photocatalytic material layer from blocking the outlet channels and thus hindering the mass transfer efficiency of oxygen.

[0036] The photocatalytic material layer includes a coupling agent and a photocatalytic material. The photocatalytic material is effectively combined with the membrane fiber 31 through the coupling agent, avoiding the complexity and efficiency loss caused by the integration and connection of the MABR unit and the photocatalytic oxidation unit in the external or internal circulation in related technologies. It also simplifies the process flow and reduces the loss rate of the photocatalytic material. Moreover, since the photocatalytic material can efficiently retain and degrade organic matter, it further significantly slows down the fouling process of the membrane fiber 31.

[0037] Based on the total mass of the photocatalytic material layer and the membrane fiber 31 as 100%, the content of the photocatalytic material is 40% to 60%, and / or the content of the coupling agent is 4% to 10%, and / or the content of the membrane fiber 31 is 30% to 48%. For example, the content of the photocatalytic material is 40%, 50%, 60%, etc., the content of the coupling agent is 4%, 7%, 10%, etc., and the content of the membrane fiber 31 is 30%, 39%, 48%, etc.

[0038] Preferably, based on the total mass of the photocatalytic material layer and the membrane fiber 31 as 100%, the content of the photocatalytic material is 45% to 60%, and / or the content of the coupling agent is 4% to 8%, and / or the content of the membrane fiber 31 is 36% to 48%. For example, the content of the photocatalytic material is 45%, 52%, 60%, etc., the content of the coupling agent is 4%, 6%, 8%, etc., and the content of the membrane fiber 31 is 36%, 42%, 48%, etc.

[0039] In some embodiments, the particle size of the photocatalytic material is 1µm or less, and the photocatalytic material is preferably, but not limited to, g-C3N4.

[0040] In some embodiments, the coupling agent is at least one of PVDF adhesive, silica adhesive, and PVA sol, preferably PVDF adhesive. Under the premise of maintaining the same amount of photocatalytic material, using PVDF adhesive as the coupling agent can achieve a higher photocatalytic material loading rate, while effectively reducing the amount of coupling agent loading, thereby mitigating its negative impact on the membrane fiber 31.

[0041] In some embodiments, the membrane fiber 31 is preferably, but not limited to, a material such as PDMS, PVDF, or PMP.

[0042] In some embodiments, the wastewater treatment device of MABR coupled photocatalytic oxidation according to the present invention further includes a housing 1. The inner cavity of the housing 1 includes a separated wastewater zone 11 and a clean water zone 12. The housing 1 is provided with a plurality of treatment chambers 2. The wastewater zone 11 is connected to the inlet of the treatment chamber 2, and the clean water zone 12 is connected to the outlet of the treatment chamber 2. The plurality of treatment chambers 2 are arranged around the outer periphery of the light source 5, or the light source 5 is arranged around the outer periphery of the plurality of treatment chambers 2. The sidewalls of the treatment chambers 2 facing at least the light source 5 are made transparent.

[0043] like Figure 1 and Figure 2 As shown, the outer shell 1 can be a treatment tank, treatment box, reaction pool, etc., preferably a reaction pool. The outer shell 1 is provided with multiple treatment chambers 2, each treatment chamber 2 is provided with a membrane bundle 3, and the inner cavity of the outer shell 1 includes a separated wastewater zone 11 and a clean water zone 12. The wastewater zone 11 is connected to the inlet of each treatment chamber 2, and the clean water zone 12 is connected to the outlet of each treatment chamber 2.

[0044] Wastewater first enters the wastewater zone 11, and then simultaneously enters multiple treatment chambers 2 from the wastewater zone 11 and is treated by the corresponding membrane bundles 3. The treated wastewater in each treatment chamber 2 enters the clean water zone 12, thereby treating the wastewater simultaneously in multiple treatment chambers 2 within the outer shell 1, so as to improve the treatment capacity and efficiency of the MABR coupled photocatalytic oxidation wastewater treatment equipment.

[0045] It should be noted that both the sewage zone 11 and the clean water zone 12 contain sewage. The sewage zone 11 contains sewage before treatment, while the clean water zone 12 contains sewage after treatment. Therefore, the sewage in the clean water zone 12 is cleaner than the sewage in the sewage zone 11.

[0046] like Figure 1 and Figure 2 As shown, the wastewater zone 11 and the water purification zone 12 are preferably, but not limited to, arranged in a vertical direction. The treatment chamber 2 is preferably, but not limited to, configured as a strip extending in a vertical direction. Multiple treatment chambers 2 are arranged at intervals around the vertical direction. The light source 5 is located inside the housing 1 and within the surrounding space of the multiple treatment chambers 2, so that the multiple treatment chambers 2 are arranged around the outer periphery of the light source 5, thereby enabling the light source 5 to uniformly irradiate the membrane bundles 3 of the multiple treatment chambers 2, ensuring that the membrane bundles 3 in the multiple treatment chambers 2 can all enable the wastewater to undergo photocatalytic oxidation reaction.

[0047] Each treatment chamber 2 has at least one sidewall facing the light source 5 that is made transparent. Preferably, the treatment chamber 2 is cylindrical, and the sidewalls of each treatment chamber 2 are made transparent. More preferably, the walls of each treatment chamber 2 are made transparent. This allows the light source 5 to pass through the walls of the treatment chamber 2 and illuminate the membrane bundle 3, ensuring that the membrane bundle 3 can enable the wastewater to undergo a photocatalytic oxidation reaction.

[0048] It is understood that the multiple processing chambers are not limited to being arranged at intervals around the vertical direction. In other embodiments, the processing chambers are configured as an arc around the vertical direction, and the multiple processing chambers are arranged at intervals along the vertical direction. The light source is located in the space surrounded by the multiple processing chambers, so that the multiple processing chambers are arranged around the outer periphery of the light source.

[0049] It is understood that the multiple processing chambers are not limited to being arranged around the outer periphery of the light source. In other embodiments, the light source is arranged around the outer periphery of the multiple processing chambers. For example, the multiple processing chambers are arranged at intervals in the vertical direction, and the light source is set in a ring or spiral shape in the vertical direction and surrounds the outer periphery of the multiple processing chambers. The light source can be located inside the housing, for example, on the inner circumferential surface of the housing, or the light source can be located outside the housing, for example, on the outer wall surface of the transparent housing.

[0050] In some embodiments, the wastewater treatment device of MABR coupled photocatalytic oxidation according to the present invention further includes a rotating component 6, which is provided with a plurality of treatment chambers 2. The rotating component 6 is used to drive the plurality of treatment chambers 2 to rotate around the light source 5, or the rotating component 6 is used to drive the plurality of treatment chambers 2 to rotate in the space surrounded by the light source 5.

[0051] like Figure 1 and Figure 2 As shown, the rotating component 6 is disposed inside the housing 1 and can rotate in the vertical direction relative to the housing 1. Multiple processing chambers 2 are disposed on the rotating component 6 so as to rotate around the light source 5 under the drive of the rotating component 6. Preferably, the rotating component 6 drives the multiple processing chambers 2 to rotate at a uniform speed. More preferably, the rotation speed of the rotating component 6 is 180°~360° / min.

[0052] The rotating component 6 drives multiple treatment chambers 2 to rotate around the light source 5, so that the membrane bundles 3 in the multiple treatment chambers 2 are uniformly irradiated by the light source 5. Especially when the light source 5 malfunctions and causes differences in brightness, the rotating component 6 drives the multiple treatment chambers 2 to rotate, which can ensure that the membrane bundles 3 are uniformly irradiated by the light source 5, thereby ensuring that the wastewater in the multiple treatment chambers 2 can fully undergo photocatalytic oxidation reaction.

[0053] It is understood that the rotating assembly is not limited to driving multiple processing chambers to rotate around the light source. In other embodiments, the light source is arranged around the outer periphery of multiple processing chambers, in which case the rotating assembly drives the multiple processing chambers to rotate within the space surrounded by the light source.

[0054] In some embodiments, the rotating assembly 6 includes a turntable 61 and a chamber container 62. The turntable 61 divides the inner cavity of the outer shell 1 into a wastewater zone 11 and a clean water zone 12. The turntable 61 can be driven to rotate. The inner cavity of the chamber container 62 forms a processing chamber 2. There are multiple chamber containers 62. Multiple chamber containers 62 are disposed on the turntable 61 and arranged at intervals around the rotation axis of the turntable 61. At least one sidewall of the chamber container 62 is made transparent.

[0055] like Figure 1 and Figure 2 As shown, the rotating assembly 6 includes a turntable 61 and a chamber container 62. The turntable 61 is preferably, but not limited to, horizontally disposed inside the outer casing 1 and can be driven to rotate about the vertical direction. The turntable 61 divides the inner cavity of the outer casing 1 into a sewage area 11 and a clean water area 12 arranged in the vertical direction.

[0056] The turntable 61 is provided with multiple chamber containers 62, which are arranged at intervals around the rotation axis of the turntable 61. The inner cavity of the chamber container 62 forms a treatment chamber 2; in other words, the chamber container 62 is the wall of the treatment chamber 2. The turntable 61 drives the multiple treatment chambers 2 to rotate, and facilitates communication between the treatment chambers 2 and the wastewater zone 11 and the clean water zone 12. At the same time, the chamber containers 62 also facilitate the installation of membrane bundles 3.

[0057] Preferably, the sidewalls of the chamber container 62 are made transparent; more preferably, the entire chamber container 62 is made transparent. This allows the light source 5 to pass through the chamber container 62 and illuminate the membrane bundle 3. The chamber container 62 is preferably, but not limited to, made of quartz glass and / or acrylic material to ensure the illumination effect of the light source 5 and avoid light loss.

[0058] In some embodiments, the chamber container 62 is a cover, which covers the end face of the turntable 61 so that the inner cavity of the chamber container 62 forms a processing chamber 2. The turntable 61 is provided with a plurality of first through holes 611 corresponding to the chamber container 62 and forming the entrance of the processing chamber 2. The end of the chamber container 62 away from the turntable 61 is provided with a plurality of second through holes 621 forming the outlet of the processing chamber 2.

[0059] like Figure 1 and Figure 2As shown, the chamber container 62 is preferably, but not limited to, a cover with an open bottom and a sealed top. The chamber container 62 is placed on the top surface of the turntable 61. The bottom opening of the chamber container 62 is closed by the turntable 61, so that the inner cavity of the chamber container 62 is closed and a processing chamber 2 is formed, thereby providing a plurality of processing chambers 2 on the rotating assembly 6.

[0060] like Figure 3 As shown, the turntable 61 is provided with multiple sets of first through holes 611 arranged at intervals around its rotation axis. Each set of first through holes 611 preferably includes, but is not limited to, multiple first through holes 611 arranged at intervals. The first through holes 611 penetrate the turntable 61 vertically. The multiple sets of first through holes 611 are correspondingly arranged with multiple chamber containers 62. Each set of first through holes 611 connects the corresponding chamber container 62 to the wastewater zone 11, serving as the inlet of the corresponding treatment chamber 2. Preferably, the diameter of the first through hole 611 is 10% to 20% of the diameter of the treatment chamber 2 to ensure that the rate of wastewater entry meets the wastewater treatment requirements.

[0061] like Figure 6 As shown, each chamber container 62 has a second through hole 621 on its top wall. The second through hole 621 penetrates the top wall of the corresponding chamber container 62 in a vertical direction. The second through hole 621 is preferably, but not limited to, a plurality of them arranged at intervals. The plurality of second through holes 621 connect the processing chamber 2 formed by the corresponding chamber container 62 with the water purification zone 12, so as to serve as the outlet of the corresponding processing chamber 2.

[0062] Wastewater enters multiple treatment chambers 2 simultaneously from the wastewater zone 11 through multiple sets of first through holes 611 on the turntable 61. After being treated by the membrane bundles 3 in the treatment chamber 2, it enters the clean water zone through multiple second through holes 621 at the top of the chamber container 62.

[0063] It is understood that the chamber container is not limited to a cover, and the inlet of the processing chamber is not limited to being located on the turntable. In other embodiments, the chamber container is a cylindrical container that is sealed at both the top and bottom. The chamber container passes through the turntable, with the bottom of the chamber container being lower than the turntable and having an inlet for the processing chamber, and the top of the chamber container being higher than the turntable and having an outlet for the processing chamber.

[0064] In some embodiments, the wastewater treatment device of MABR coupled photocatalytic oxidation according to the present invention further includes a guide plate 7, and the rotating assembly 6 further includes a rotating shaft 63. The rotating shaft 63 is connected to the turntable 61 to drive the turntable 61 to rotate. The guide plate 7 is disposed on the inner circumferential surface of the housing 1. The guide plate 7 is located between the inner circumferential surface of the housing 1 and the turntable 61, and surrounds the outer circumference of the turntable 61. The guide plate 7 extends along the direction from the wastewater zone 11 toward the clean water zone 12, and is inclined along the direction from the inner circumferential surface of the housing 1 toward the turntable 61. A water-proof layer 71 is provided at one end of the guide plate 7 facing the turntable 61.

[0065] like Figures 1-3 As shown, the rotating assembly 6 also includes a rotating shaft 63 preferably, but not limited to, arranged in a vertical direction. The rotating shaft 63 can extend into and connect to the turntable 61 from the bottom of the housing 1, or it can extend into and connect to the turntable 61 from the top of the housing 1. Preferably, the bottom end of the rotating shaft 63 is rotatably connected to the bottom of the housing 1, and the top of the rotating shaft 63 extends upward to the outside of the housing 1 for connecting to a driving device, so that it can rotate in a vertical direction under the drive of the driving device and drive the turntable 61 to rotate in a vertical direction.

[0066] A space is provided between the outer circumferential surface of the turntable 61 and the inner circumferential surface of the outer casing 1 to prevent wear between the turntable 61 and the outer casing 1 during rotation. A guide plate 7 is provided on the inner circumferential surface of the outer casing 1. The guide plate 7 is annular, extending circumferentially along the outer casing 1 and surrounding the outer circumference of the turntable 61. In other words, an annular guide plate 7 is provided in the space between the turntable 61 and the outer casing 1. The guide plate 7 cooperates with the turntable 61 to divide the inner cavity of the outer casing 1 into a wastewater zone 11 and a clean water zone 12, preventing wastewater in the wastewater zone 11 from directly flowing into the clean water zone 12 through the space.

[0067] The inner circumferential end of the guide plate 7 facing the turntable 61 is provided with an annular water-proof layer 71. The water-proof layer 71 is preferably, but not limited to, waterproof tar paper. The water-proof layer 71 is filled between the guide plate 7 and the turntable 61 to avoid wear caused by hard friction between the guide plate 7 and the turntable 61. At the same time, it seals the gap between the guide plate 7 and the turntable 61. The sewage in the sewage area 11 on the wall flows directly into the clean water area 12 through the gap.

[0068] The guide plate 7 extends from bottom to top and is inclined from the outside to the inside along the radial direction of the outer shell 1 to guide the sewage in the sewage zone 11 toward the turntable 61, so that the sewage can enter the first through hole 611 and thus enter the treatment chamber 2.

[0069] It is understood that the rotating assembly is not limited to including a rotating shaft, and the inner circumferential surface of the housing is not limited to having a guide plate. In other embodiments, the outer circumference of the turntable is embedded in the circumferential wall of the housing, and the outer circumference of the turntable is provided with teeth. A transmission gear is provided in the wall of the housing. Alternatively, a transmission gear is provided on the outside of the housing and embedded in the circumferential wall of the housing. The transmission gear meshes with the teeth of the turntable to drive the turntable to rotate. Furthermore, a sealing ring is provided between the inner circumferential surface of the housing and the end face of the turntable.

[0070] In some embodiments, the wastewater treatment device of MABR coupled photocatalytic oxidation according to the present invention further includes a water-isolated container 8, which is disposed in the water purification zone 12. The water-isolated container 8 is provided with a light source 5 inside to isolate the light source 5 from the liquid in the water purification zone 12. At least the part of the water-isolated container 8 between the light source 5 and the treatment chamber 2 is made transparent.

[0071] like Figure 1 and Figure 2 As shown, the wastewater zone 11 is preferably, but not limited to, located below the clean water zone 12, and the chamber container 62 extends upward from the turntable 61 so that the chamber container 62 is disposed within the clean water zone 12.

[0072] The water purification zone 12 is also equipped with a water-proof container 8, which is located in the space surrounded by multiple chamber containers 62. The water-proof container 8 is equipped with a light source 5. The water-proof container 8 isolates the light source 5 from the sewage in the water purification zone 12 to prevent the light source 5 from being damaged by water.

[0073] The portion of the water-tight container 8 located between the light source 5 and the processing chamber 2 is made transparent. Preferably, the entire water-tight container 8 is made transparent to ensure that the light source 5 can shine through the water-tight container 8 onto the membrane bundle 3. The water-tight container 8 is preferably, but not limited to, made of quartz glass or acrylic.

[0074] Since the wastewater in the clean water zone 12 is cleaner than the wastewater in the wastewater zone 11, the light source 5 and the chamber container 62 are placed in the clean water zone 12 so that the light source 5 can better penetrate the wastewater and irradiate the membrane bundle 3, thereby ensuring the photocatalytic oxidation reaction.

[0075] The water-proof container 8 can be configured as a container with an open top, and the top of the water-proof container 8 extends above the outer shell 1. Alternatively, the water-proof container 8 can be configured as a closed container and located within the sewage in the clean water zone 12.

[0076] The light source 5 can be suspended inside the water-proof container 8 by external equipment, or it can be connected to the water-proof container 8 by a bracket.

[0077] Preferably, the water-proof container 8 is configured as a container with an open top, and the top of the water-proof container 8 extends above the outer shell 1. The top of the water-proof container 8 is used to connect and fix the device so that the water-proof container 8 is suspended inside the outer shell 1. The light source 5 is connected to the water-proof container 8 through a bracket to install and fix the water-proof container 8 and the light source 5, while enabling the multiple chamber containers 62 to rotate around the light source 5 and the water-proof container 8.

[0078] More preferably, the bottom of the water-proof container 8 is provided with a through hole for the rotating shaft 63 to pass through, and the light source 5 is configured as an annular shape around the vertical direction, or the light source 5 is configured as a plurality of sequentially arranged around the vertical direction, so that the light source 5 surrounds the outer periphery of the rotating shaft 63.

[0079] In some embodiments, the wastewater treatment device of the MABR coupled photocatalytic oxidation according to the present invention further includes a membrane exhaust assembly 9, wherein the membrane bundle 3 is provided with an air inlet end and an exhaust end, and the air inlet end and the outlet of the treatment chamber 2 are located at the first end of the treatment chamber 2 (e.g., Figure 1 The exhaust end and the inlet of the processing chamber 2 are located at the second end of the processing chamber 2 (as shown at the top of the processing chamber 2). Figure 1 The bottom of the processing chamber 2 shown) has multiple membrane bundles 3 whose air inlets are connected to the membrane air supply assembly 4, and multiple membrane bundles 3 whose exhaust ends are connected to the membrane exhaust assembly 9. The exhaust port of the membrane exhaust assembly 9 is located outside the outer shell 1. Both the membrane air supply assembly 4 and the membrane exhaust assembly 9 rotate synchronously with the rotating assembly 6.

[0080] like Figure 1 and Figure 2 As shown, the treatment chamber 2 extends vertically, with an inlet at the bottom and an outlet at the top, allowing wastewater to flow from bottom to top through the treatment chamber 2.

[0081] The membrane bundle 3 extends vertically and passes through the processing chamber 2. The membrane bundle 3 has an air inlet end and an air outlet end arranged opposite each other in the vertical direction. The air inlet end of the membrane bundle 3 is located at the top of the processing chamber 2 and is connected to the membrane air supply assembly 4. The air outlet end of the membrane bundle 3 is located at the bottom of the processing chamber 2 and is connected to the membrane exhaust assembly 9. The exhaust port of the membrane exhaust assembly 9 is located outside the outer shell 1.

[0082] Gases such as air or oxygen are supplied into the membrane filaments 31 of the membrane bundle 3 by the membrane air supply assembly 4, and then flow from top to bottom along the membrane filaments 31 to form membrane aeration. The gas then enters the membrane exhaust assembly 9 and is discharged to the outside of the housing 1 through the membrane exhaust assembly 9 to prevent the exhaust gas from the membrane bundle 3 from entering the sewage and affecting sewage treatment.

[0083] The flow direction of wastewater in the treatment chamber 2 is opposite to the flow direction of gas in the membrane fiber 31, which can improve the wastewater treatment effect in the treatment chamber 2.

[0084] Both the membrane gas supply assembly 4 and the membrane gas exhaust assembly 9 are connected to multiple membrane bundles 3 and rotate synchronously with the rotating assembly 6 to ensure that they remain connected to the membrane bundles 3 when the multiple processing chambers 2 rotate.

[0085] Furthermore, such as Figure 1 and Figure 2 As shown, the membrane gas supply assembly 4 includes a membrane gas supply fan 43, a membrane gas supply ring pipe 42, and membrane gas supply branch pipes 41. The membrane gas supply ring pipe 42 is a ring-shaped structure in the vertical direction and surrounds the outer periphery of the rotating shaft 63. There are multiple membrane gas supply branch pipes 41 corresponding to the membrane bundles 3. The multiple membrane gas supply branch pipes 41 are arranged at intervals along the circumference of the membrane gas supply ring pipe 42 and connected between the membrane gas supply ring pipe 42 and the air inlet end of the corresponding membrane bundle 3. The membrane gas supply fan 43 is connected to the membrane gas supply ring pipe 42 to supply gases such as air or oxygen to the membrane gas supply ring pipe 42. The gas is diverted by the membrane gas supply ring pipe 42 into the multiple membrane gas supply branch pipes 41 and then supplied to the corresponding membrane bundles 3.

[0086] Preferably, the membrane air supply fan 43 and the membrane air supply ring pipe 42 are both located above the outer casing 1, and the membrane air supply branch pipe 41 extends from the membrane air supply ring pipe 42 into the outer casing 1 and is connected to the air inlet end of the membrane bundle 3.

[0087] Furthermore, the membrane aeration assembly 4 also includes a membrane aeration solenoid valve 44 and a membrane aeration vortex flow meter 45. Each membrane aeration branch pipe 41 is equipped with a membrane aeration solenoid valve 44 and a membrane aeration vortex flow meter 45. Preferably, the membrane aeration solenoid valve 44 and the membrane aeration vortex flow meter 45 are located on the portion of the membrane aeration branch pipe 41 above the wastewater. The membrane aeration solenoid valve 44 is used to regulate the aeration rate. The membrane aeration vortex flow meter 45 is used to display the aeration rate.

[0088] Furthermore, such as Figure 1 As shown, the membrane venting assembly 9 includes a membrane venting main pipe 91, a membrane venting ring pipe 92, and membrane venting branch pipes 93. The membrane venting ring pipe 92 is annular in the vertical direction and surrounds the outer periphery of the rotating shaft 63. Multiple membrane venting branch pipes 93 are arranged corresponding to the membrane bundles 3, spaced apart circumferentially along the membrane venting ring pipe 92, and connected between the membrane venting ring pipe 92 and the corresponding venting end of the membrane bundle 3. Both the membrane venting ring pipe 92 and the membrane venting branch pipes 93 are located within the wastewater zone 11. The bottom end of the membrane venting main pipe 91 is connected to the membrane venting ring pipe 92 and extends upwards from the membrane venting ring pipe 92 to the top of the outer casing 1, so that the top end of the membrane venting main pipe 91 forms the vent of the membrane venting assembly 9. The gas discharged from the membrane bundle 3 enters the membrane venting ring pipe 92 through the corresponding membrane venting branch pipe 93 and converges, then is discharged to the atmosphere through the membrane venting main pipe 91.

[0089] Preferably, both the turntable 61 and the water-tight container 8 are provided with holes for passing through the membrane exhaust pipe 91.

[0090] In some embodiments, the membrane bundle 3 includes an air inlet connector 32, an air outlet connector 33, and a plurality of membrane filaments 31. The air inlet connector 32 is located at the first end of the processing chamber 2 and communicates with the membrane air supply assembly 4. The air outlet connector 33 is located at the second end of the processing chamber 2 and communicates with the membrane air exhaust assembly 9. The plurality of membrane filaments 31 are arranged in a ring and communicate between the air inlet connector 32 and the air outlet connector 33.

[0091] like Figure 1 and Figure 2As shown, the membrane bundle 3 includes an air inlet connector 32, multiple membrane filaments 31, and an exhaust connector 33 connected sequentially from top to bottom. The air inlet connector 32 is installed through the top wall of the chamber container 62, with its top end located above the chamber container 62 and connected to the corresponding membrane air supply branch pipe 41 by insertion or thread. The exhaust connector 33 is installed through the turntable 61, with its bottom end located below the turntable 61 and connected to the corresponding membrane exhaust branch pipe 93 by insertion or thread. Multiple membrane filaments 31 are connected vertically between the air inlet connector 32 and the exhaust connector 33, and the inner cavity of each membrane filament 31 is connected to the inner cavity of the air inlet connector 32 and the inner cavity of the exhaust connector 33.

[0092] Preferably, the air inlet connector 32 and the exhaust connector 33 are injection molded parts, so as to connect and fix the membrane filament 31 by injection molding.

[0093] Gas enters the inlet connector 32 through the membrane gas supply branch pipe 41, and then flows into multiple membrane fibers 31. The gas flows downward along the membrane fibers 31. During the flow along the membrane fibers 31, the gas escapes outward through the wall of the membrane fibers 31 to achieve biological denitrification. The remaining gas is discharged from the lower end of the membrane fibers 31 to the exhaust connector 33 and then merges, and then enters the membrane exhaust branch pipe 93.

[0094] Because the multiple membrane filaments 31 of the membrane bundle 3 are in a loose state under the buoyancy of the sewage (e.g. Figure 2 As shown in the figure, multiple membrane filaments 31 are arranged in a ring to avoid entanglement of multiple membrane filaments 31 during the wastewater treatment process, and to ensure that the photocatalytic material layer on multiple membrane filaments 31 can be fully irradiated by the light source 5, thereby ensuring the photocatalytic oxidation reaction.

[0095] Preferably, the diameter of the treatment chamber 2 is 1.5 to 2 times the diameter of the membrane bundle 3 when the multiple membrane filaments 31 are in a loose state, so as to ensure that the sewage is in full contact with the multiple membrane filaments 31, thereby ensuring the sewage treatment effect.

[0096] In some embodiments, the wastewater treatment device of MABR coupled photocatalytic oxidation according to the present invention further includes an air-rubber tube 10 and an air supply assembly 20. The air supply assembly 20 is connected to the air-rubber tube 10. The air-rubber tube 10 is located below a plurality of treatment chambers 2 and is provided with an air hole 101 below the inlet of each treatment chamber 2. The air-rubber tube 10 and the air supply assembly 20 rotate synchronously with the rotating assembly 6.

[0097] like Figure 1 , Figure 4 and Figure 5 As shown, the air wiping pipe 10 is located in the sewage area 11 and below multiple treatment chambers 2. The air wiping pipe 10 is provided with an air hole 101 below the inlet of each treatment chamber 2. The air supply assembly 20 is connected to the air wiping pipe 10 to supply wiping gas to the air wiping pipe 10.

[0098] The scrubbing gas is supplied by the air scrubbing pipe 10 to the area below the inlet of each treatment chamber 2, and then discharged through the air hole 101. The discharged gas enters the treatment chamber 2 through the inlet of the treatment chamber 2, and then flows from top to bottom and contacts the membrane filaments 31 of the membrane bundle 3 to scrub the membrane filaments 31. This periodically performs air scrubbing on the membrane filaments 31 of the membrane bundle 3 to remove the aging biofilm and its metabolic products attached to the membrane filaments 31 and the photocatalytic material layer, thereby ensuring the wastewater treatment effect.

[0099] Both the air-rub tube 10 and the air supply assembly 20 rotate synchronously with the rotating assembly 6 to ensure that the air hole 101 of the air-rub tube 10 is always located below the inlet of the corresponding processing chamber 2.

[0100] Preferably, the distance between the air wiping tube 10 and the turntable 61 is less than or equal to 10 mm to ensure the bubble strength of the wiping gas and slow down the bubble dissipation rate.

[0101] Furthermore, such as Figure 1 , Figure 4 and Figure 5 As shown, the air-rub tube 10 includes an air-rub ring tube 103 and air-rub branch tubes 102. The air-rub ring tube 103 is annular in the vertical direction and surrounds the outer periphery of the rotating shaft 63. Multiple air-rub branch tubes 102 are arranged corresponding to the processing chamber 2. These multiple air-rub branch tubes 102 are spaced apart circumferentially along the air-rub ring tube 103 and extend from the air-rub ring tube 103 to the lower part of the corresponding processing chamber 2. Each air-rub branch tube 102 has at least one air hole 101 below the corresponding processing chamber 2. Preferably, the air-rub branch tube 102 has multiple air holes 101 spaced apart along its extension direction. The air-rub ring tube 103 is connected to the air supply assembly 20.

[0102] Furthermore, such as Figure 1 As shown, the pipe air supply assembly 20 includes a pipe air supply fan 202 and a pipe air supply main 201. The pipe air supply main 201 is connected to the air rubbing ring pipe 103 and extends upward from the air rubbing ring pipe 103 to the top of the housing 1. The pipe air supply fan 202 is located above the housing 1 and is connected to the pipe air supply main 201 to supply rubbing gas into the pipe air supply main 201, and then the rubbing gas is supplied from the pipe air supply main 201 into the air rubbing ring pipe 103 and distributed to multiple air rubbing branch pipes 102.

[0103] Preferably, both the turntable 61 and the water-tight container 8 are provided with holes for the gas supply main pipe 201 to pass through.

[0104] Furthermore, the gas supply assembly 20 also includes a gas supply solenoid valve 203 and a gas supply vortex flow meter 204, which are located on the main gas supply pipe 201, and preferably on the portion of the main gas supply pipe 201 above the sewage. The gas supply solenoid valve 203 is used to regulate the gas supply volume. The gas supply vortex flow meter 204 is used to display the gas flow rate.

[0105] In some embodiments, the wastewater treatment equipment of MABR coupled photocatalytic oxidation according to the present invention further includes a return pipe 30. The outer shell 1 is provided with a total inlet 13, a total outlet 14 and an overflow port 15. The total inlet 13 is connected to the wastewater zone 11 and is lower than the inlet of the treatment chamber 2. The total outlet 14 and the overflow port 15 are both connected to the clean water zone 12 and are higher than the outlet of the treatment chamber 2. The total inlet 13 and the total outlet 14 are arranged opposite each other in the horizontal direction. The return pipe 30 is connected between the overflow port 15 and the total inlet 13.

[0106] like Figure 1 As shown, the wastewater zone 11 and the clean water zone 12 are arranged sequentially from bottom to top. The top of the outer shell 1 is provided with a total outlet 14 and an overflow outlet 15 that connect to the clean water zone 12. The total outlet 14 and the overflow outlet 15 are higher than the outlet of the treatment chamber 2, preferably higher than the treatment chamber 2. More preferably, the distance between the total outlet 14 and the overflow outlet 15 and the outlet of the treatment chamber 2 is greater than or equal to 50 mm. The bottom of the outer shell 1 is provided with a total inlet 13 that connects to the wastewater zone 11. The total inlet 13 is lower than the inlet of the treatment chamber 2, preferably lower than the treatment chamber 2. The return pipe 30 connects the overflow outlet 15 and the total inlet 13.

[0107] Wastewater is supplied into the wastewater zone 11 inside the outer shell 1 through the main inlet 13, and then treated through multiple treatment chambers 2. The treated wastewater enters the clean water zone 12. Part of the treated wastewater enters the return pipe 30 through the overflow port 15, and then flows back into the wastewater zone 11 through the main inlet 13 to ensure that the upward flow velocity of the wastewater in the treatment chamber 2 meets the requirements of wastewater treatment. The upward flow velocity is greater than or equal to 60m / h. At the same time, the overflow port 15 is also used to control the liquid level of the wastewater inside the outer shell 1 to prevent the wastewater from overflowing from the top of the outer shell 1 to the outside. The other part of the treated wastewater is discharged from the outer shell 1 through the main outlet 14.

[0108] The distance between the main inlet 13 and the turntable 61 is greater than or equal to 50 mm to ensure that the sewage supplied by the main inlet 13 into the sewage zone 11 can enter the multiple treatment chambers 2 evenly.

[0109] The main inlet 13 and the main outlet 14 are arranged opposite each other in the horizontal direction, preferably along such a direction. Figure 1 The left and right sides are arranged opposite each other as shown to ensure that the sewage flows fully inside the outer casing 1.

[0110] Furthermore, the return pipe 30 is equipped with a pipeline pump 50 and an electric valve 40. The electric valve 40 is used to control the opening and closing of the return pipe 30 and the flow rate. The pipeline pump 50 is used to provide power for sewage return and to ensure the rising flow rate of sewage in the treatment chamber 2.

[0111] Furthermore, the main outlet 14 is equipped with an electric valve 40 and an electromagnetic flow meter 60. The electric valve 40 controls the opening and closing of the main outlet 14 and the flow rate, while the electromagnetic flow meter 60 is used to display the sewage flow rate.

[0112] In some embodiments, the bottom surface 16 of the outer casing 1 is configured as a cone with a cross-section decreasing from top to bottom. The outer casing 1 is provided with a main inlet 13 and a slag discharge port 17. The main inlet 13 is located on the side wall of the outer casing 1, and the slag discharge port 17 is located at the lowest position of the bottom surface 16 of the outer casing 1.

[0113] like Figure 1 As shown, the bottom surface 16 of the outer shell 1 is set as a cone with a cross-section that decreases from top to bottom. The side wall of the outer shell 1 is provided with a total inlet 13. The total inlet 13 is higher than the bottom surface 16 of the outer shell 1. The cone-shaped bottom surface 16 plays a water distribution role for the sewage supplied by the total inlet 13, so that the sewage is evenly distributed in the horizontal direction and thus enters the multiple treatment chambers 2 evenly.

[0114] The conical bottom surface 16 also serves to collect solid residues such as sludge and bioflocs. The conical bottom surface 16 has a lowest position, and the bottom of the outer shell 1 is provided with a slag discharge port 17, which is connected to the lowest position of the bottom surface 16 for discharging solid residues.

[0115] Preferably, the inclination angle of the bottom surface 16 is greater than or equal to 10° to ensure that the solid residue is discharged smoothly.

[0116] Furthermore, the slag discharge port 17 is equipped with a solenoid valve 40 to control the opening and closing of the slag discharge port 17 and the flow rate.

[0117] In some embodiments, at least the sidewalls of the housing 1 are made transparent, and preferably the entire housing 1 is made transparent, so as to facilitate observation of the interior of the housing 1.

[0118] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0119] Furthermore, the terms "first" and "second" are used only for distinction and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0120] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0121] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0122] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0123] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A wastewater treatment device of MABR coupled with photocatalytic oxidation, characterized in that, The application relates to a water purifying device, which comprises: a processing chamber (2) provided with an inlet and an outlet; a membrane bundle (3) comprising a plurality of membrane filaments (31), the surface of the membrane filaments (31) being provided with a layer of photocatalytic material, at least part of the membrane bundle (3) being arranged in the processing chamber (2); a membrane gas supply assembly (4) connected to the membrane bundle (3); a light source (5) for irradiating the membrane bundle (3).

2. The MABR coupled photocatalytic oxidation wastewater treatment apparatus of claim 1, wherein, The application further comprises a housing (1), the inner cavity of the housing (1) comprising a sewage area (11) and a purified water area (12), a plurality of the processing chambers (2) being arranged in the housing (1), the sewage area (11) being in communication with the inlet of the processing chamber (2), the purified water area (12) being in communication with the outlet of the processing chamber (2), the processing chambers (2) being arranged around the periphery of the light source (5), or the light source (5) being arranged around the periphery of the processing chambers (2), at least the side wall of the processing chamber (2) being transparent.

3. The MABR coupled photocatalytic oxidation wastewater treatment apparatus of claim 2, wherein, The application further comprises a rotating assembly (6) provided with a plurality of the processing chambers (2), the rotating assembly (6) being used to drive the processing chambers (2) to rotate around the light source (5), or the rotating assembly (6) being used to drive the processing chambers (2) to rotate in the space around the light source (5).

4. The MABR coupled photocatalytic oxidation wastewater treatment apparatus of claim 3, wherein, The rotating assembly (6) comprises a rotating disc (61) and a chamber container (62), the rotating disc (61) separating the inner cavity of the housing (1) into the sewage area (11) and the purified water area (12), the rotating disc (61) being driven to rotate, the inner cavity of the chamber container (62) forming the processing chamber (2), a plurality of the chamber containers (62) being arranged on the rotating disc (61) and being arranged at intervals around the rotation axis of the rotating disc (61), at least the side wall of the chamber container (62) being transparent.

5. The MABR coupled photocatalytic oxidation wastewater treatment apparatus of claim 4, wherein, The chamber container (62) is a cover, the chamber container (62) being arranged on the end face of the rotating disc (61) so that the inner cavity of the chamber container (62) forms the processing chamber (2), the rotating disc (61) being provided with a plurality of first through holes (611) corresponding to the chamber container (62) and forming the inlet of the processing chamber (2), the chamber container (62) being provided with a plurality of second through holes (621) at the end away from the rotating disc (61) and forming the outlet of the processing chamber (2).

6. The MABR coupled photocatalytic oxidation wastewater treatment apparatus of claim 5, wherein, The device further comprises a deflector (7), and the rotating assembly (6) further comprises a rotating shaft (63) connected with the rotating disc (61) to drive the rotating disc (61) to rotate, the deflector (7) is arranged on the inner circumferential surface of the shell (1), is located between the inner circumferential surface of the shell (1) and the rotating disc (61), and surrounds the outer periphery of the rotating disc (61), the deflector (7) extends in the direction from the sewage area (11) to the clean water area (12), is arranged in a slanting manner in the direction from the inner circumferential surface of the shell (1) to the rotating disc (61), and one end of the deflector (7) towards the rotating disc (61) is provided with a water barrier layer (71).

7. The MABR coupled photocatalytic oxidation wastewater treatment apparatus of claim 2, wherein, The device further comprises a water barrier container (8) arranged in the clean water area (12), the water barrier container (8) is internally provided with the light source (5) to isolate the light source (5) from the liquid in the clean water area (12), and at least the part of the water barrier container (8) between the light source (5) and the treatment chamber (2) is transparent.

8. The MABR coupled photocatalytic oxidation wastewater treatment apparatus of claim 3, wherein, The device further comprises a membrane exhaust assembly (9), the membrane bundle (3) is provided with an air inlet end and an air outlet end, the air inlet end is located at the first end of the treatment chamber (2) and is connected with the outlet of the treatment chamber (2), the air outlet end is located at the second end of the treatment chamber (2) and is connected with the inlet of the treatment chamber (2), the air inlet ends of the plurality of membrane bundles (3) are connected with the membrane air supply assembly (4), the air outlet ends of the plurality of membrane bundles (3) are connected with the membrane exhaust assembly (9), the air outlet of the membrane exhaust assembly (9) is located outside the shell (1), and the membrane air supply assembly (4) and the membrane exhaust assembly (9) rotate synchronously with the rotating assembly (6).

9. The MABR coupled photocatalytic oxidation wastewater treatment apparatus of claim 8, wherein, The membrane bundle (3) comprises an air inlet joint (32), an air outlet joint (33) and a plurality of membrane filaments (31), the air inlet joint (32) is arranged at the first end of the treatment chamber (2) and is connected with the membrane air supply assembly (4), the air outlet joint (33) is arranged at the second end of the treatment chamber (2) and is connected with the membrane exhaust assembly (9), and the plurality of membrane filaments (31) are arranged in a ring shape and are connected between the air inlet joint (32) and the air outlet joint (33).

10. The MABR coupled photocatalytic oxidation wastewater treatment apparatus of claim 3, wherein, The device further comprises a gas wiping pipe (10) and a pipe air supply assembly (20), the pipe air supply assembly (20) is connected with the gas wiping pipe (10), the gas wiping pipe (10) is located below the plurality of treatment chambers (2) and is provided with a gas hole (101) below the inlet of each treatment chamber (2), and the gas wiping pipe (10) and the pipe air supply assembly (20) rotate synchronously with the rotating assembly (6).

11. The MABR coupled photocatalytic oxidation wastewater treatment apparatus of claim 2, wherein, The shell (1) is provided with a total inlet (13), a total outlet (14) and an overflow port (15), the total inlet (13) is communicated with the sewage area (11) and is lower than the inlet of the treatment chamber (2), the total outlet (14) and the overflow port (15) are both communicated with the clean water area (12) and are higher than the outlet of the treatment chamber (2), the total inlet (13) and the total outlet (14) are oppositely arranged along the horizontal direction, and the reflux pipe (30) is communicated between the overflow port (15) and the total inlet (13).

12. The MABR coupled photocatalytic oxidation wastewater treatment apparatus of claim 2, wherein, The bottom surface (16) of the shell (1) is arranged in a taper shape with a cross section decreasing from top to bottom, the shell (1) is provided with a total inlet (13) and a slag discharge port (17), the total inlet (13) is arranged on the side wall of the shell (1), and the slag discharge port (17) is arranged at the lowest position of the bottom surface (16) of the shell (1).

13. The MABR coupled photocatalytic oxidation wastewater treatment apparatus of any of claims 1-12, wherein, The air hole of the photocatalytic material layer is opposite to the air outlet hole of the membrane filament (31), the photocatalytic material layer comprises a coupling agent and a photocatalytic material, the content of the photocatalytic material is 40%-60% and / or the content of the coupling agent is 4%-10% and / or the content of the membrane filament (31) is 30%-48% based on the total mass of the photocatalytic material layer and the membrane filament (31) being 100%.

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