Tubular MBR (Membrane Bioreactor) membrane assembly

Abstract

The utility model relates to the technical field of tubular MBR membranes, in particular to a tubular MBR membrane component which comprises a tubular MBR membrane, a pressure tube and an air pump, the pressure tube is connected with the tubular MBR membrane, and the air pump is connected with the pressure tube; the tubular MBR membrane comprises a plurality of groups of ultra-filtering inner tubes, two ends of the plurality of groups of ultra-filtering inner tubes are connected with joints for feeding and discharging water, the plurality of groups of ultra-filtering inner tubes are sleeved with inner tube sleeves, and two ends of the inner tube sleeves are fixedly connected with the joints. The tubular MBR membrane assembly for improving the membrane flux is provided for water treatment personnel through an assembly consisting of a tubular MBR membrane, a pressure tube and an air pump, the viscosity of liquid can change along with the temperature by heating the liquid in a tube group, and the viscosity of an activated sludge mixed solution is reduced after the temperature is increased, so that the permeation resistance is reduced, the membrane flux is increased, and the membrane flux is improved. Dirt accumulated on the inner wall of the ultra-filtering inner pipe can be promoted to fall off, so that the service life of the ultra-filtering inner pipe is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of tubular MBR membranes, and specifically relates to a tubular MBR membrane module. Background Art

[0002] The tubular MBR membrane is widely used, mainly in the field of sewage treatment, including the treatment of urban sewage, industrial wastewater, etc. Through the efficient interception of the membrane and biodegradation, the purification and reuse of water quality are realized, and it has the advantages of good effluent quality, small floor area, simple operation and maintenance, etc.

[0003] During the liquid filtration of the existing tubular MBR membrane, due to the liquid temperature tending to room temperature, the membrane flux of the liquid is limited, resulting in limited liquid treatment efficiency. Therefore, a tubular MBR membrane module is proposed to provide a set of tubular MBR membrane modules with increased membrane flux for water treatment personnel. By heating the liquid inside the tube group, the viscosity of the liquid changes with temperature. After the temperature rises, the viscosity of the activated sludge mixture decreases, thereby reducing the osmotic resistance and increasing the membrane flux. Summary of the Utility Model

[0004] Aiming at the problems in the prior art, the utility model provides a tubular MBR membrane module to provide a set of tubular MBR membrane modules with increased membrane flux for water treatment personnel. By heating the liquid inside the tube group, the viscosity of the liquid changes with temperature. After the temperature rises, the viscosity of the activated sludge mixture decreases, thereby reducing the osmotic resistance and increasing the membrane flux.

[0005] The technical solution adopted by the utility model to solve its technical problems is a tubular MBR membrane module, which includes a tubular MBR membrane, a pressure pipe and an air pump. The pressure pipe is connected to the tubular MBR membrane, and the air pump is connected to the pressure pipe;

[0006] The tubular MBR membrane includes several groups of ultrafiltration inner tubes. Both ends of the several groups of ultrafiltration inner tubes are connected with joints for water inlet and drainage. An inner tube sleeve is sleeved outside the several groups of ultrafiltration inner tubes, and both ends of the inner tube sleeve are fixedly connected to the joints.

[0007] By adopting the above technical solution, a set of tubular MBR membrane modules with increased membrane flux is provided for water treatment personnel through the components composed of the tubular MBR membrane, the pressure pipe and the air pump.

[0008] Specifically, an outer tube sleeve is sleeved outside the inner tube sleeve. Both ends of the outer tube sleeve are fixedly connected to the outer diameters of both ends of the inner tube sleeve. A ceramic heating tube is arranged on the inner wall of the outer tube sleeve, and the ceramic heating tube is in contact with the inner tube sleeve;

[0009] The power cord of the ceramic heating tube penetrates through and is arranged outside the outer tube sleeve.

[0010] By adopting the above technical solution, by heating the liquid inside the tube group, the viscosity of the liquid will change with temperature. After the temperature rises, the viscosity of the activated sludge mixture decreases, thereby reducing the osmotic resistance and increasing the membrane flux.

[0011] Specifically, a permeate discharge interface is provided on one side of the inner tube sleeve, and the end of the permeate discharge interface penetrates through the outer tube sleeve.

[0012] By adopting the above technical solution, by heating the liquid inside the tube group, the viscosity of the liquid will change with temperature. After the temperature rises, the viscosity of the activated sludge mixture decreases, thereby reducing the osmotic resistance and increasing the membrane flux.

[0013] Specifically, a permeate inlet interface is provided on the side of the pressure tube close to the tubular MBR membrane, and the permeate inlet interface is connected to the permeate discharge interface.

[0014] Specifically, a drain port is provided at the bottom of the pressure tube, an air port is provided at the top of the pressure tube, several groups of inclined and staggered water-blocking plates are arranged in the middle of the pressure tube, and a float valve is provided at the bottom of the air port.

[0015] Specifically, the exhaust end of the air pump is connected to the air port.

[0016] The beneficial effects of the present utility model: The component composed of the tubular MBR membrane, the pressure tube and the air pump provides a set of tubular MBR membrane components for water treatment personnel to improve the membrane flux. By heating the liquid inside the tube group, the viscosity of the liquid will change with temperature. After the temperature rises, the viscosity of the activated sludge mixture decreases, thereby reducing the osmotic resistance and increasing the membrane flux. When it is necessary to perform reverse flushing on the membrane wall to dredge the dirt accumulated on the membrane pores, the air pump pressurizes the pressure tube and closes the drain port, so that the outer wall pressure of the ultrafiltration inner tube increases, which can promote the shedding of the dirt accumulated on the inner wall of the ultrafiltration inner tube, thereby improving the service life of the ultrafiltration inner tube, and solving the problem that during the liquid filtration of the existing tubular MBR membrane, due to the liquid temperature tending to be normal temperature, the membrane flux of the liquid is limited, resulting in limited liquid treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following further illustrates the present utility model in conjunction with the drawings and embodiments.

[0018] Figure 1 It is a schematic diagram of the whole of the present utility model;

[0019] Figure 2 It is a schematic diagram of the tubular MBR membrane of the present utility model;

[0020] Figure 3 It is a schematic diagram of the inner tube sleeve of the present utility model;

[0021] Figure 4 It is a schematic diagram of the outer tube sleeve of the utility model;

[0022] Figure 5 It is a schematic diagram of the cross section of the pressure pipe of the utility model;

[0023] In the figure: 1. Tubular MBR membrane; 101. Joint; 102. Ultrafilter inner tube; 103. Inner tube sleeve; 104. Outer tube sleeve; 105. Permeate discharge interface; 106. Ceramic heating tube; 2. Pressure tube; 21. Permeate inlet interface; 22. Discharge port; 23. Water-blocking plate; 24. Air port; 25. Float valve; 3. Air pump. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] In order to increase the membrane flux, Figures 1-5 As shown, a tubular MBR membrane assembly described in the utility model comprises a tubular MBR membrane 1, a pressure pipe 2 and an air pump 3, wherein the pressure pipe 2 is connected to the tubular MBR membrane 1, and the air pump 3 is connected to the pressure pipe 2;

[0026] The tubular MBR membrane 1 includes several groups of ultra-filter inner tubes 102, and the two ends of the several groups of ultra-filter inner tubes 102 are connected with joints 101 for water inlet and outlet. The outer part of the several groups of ultra-filter inner tubes 102 is provided with an inner tube sleeve 103, and the two ends of the inner tube sleeve 103 are fixedly connected to the joint 101.

[0027] When in use, the assembly consisting of the tubular MBR membrane 1, the pressure pipe 2 and the air pump 3 is used to provide water treatment personnel with a set of tubular MBR membrane components for improving membrane flux. By heating the liquid inside the tube group, the viscosity of the liquid will change with the temperature. After the temperature rises, the viscosity of the activated sludge mixed liquid decreases, thereby reducing the osmotic resistance and increasing the membrane flux.

[0028] To improve efficiency, for example, Figures 1-5 As shown, the utility model also includes that the outer sleeve of the inner sleeve 103 is provided with an outer sleeve 104, the two ends of the outer sleeve 104 are fixedly connected to the outer diameters of the two ends of the inner sleeve 103, and the inner wall of the outer sleeve 104 is provided with a ceramic heating tube 106, and the ceramic heating tube 106 is in contact with the inner sleeve 103;

[0029] The power line of the ceramic heating tube 106 is arranged to penetrate the outside of the outer tube sleeve 104 .

[0030] In use, the inner tube sleeve 103 is heated by the ceramic heating tube 106, causing the temperature inside the inner tube sleeve 103 to rise. After the temperature rises, the viscosity of the activated sludge mixture decreases, thereby reducing the osmotic resistance and increasing the membrane flux, thus improving the efficiency of water treatment.

[0031] A permeate discharge interface 105 is provided on one side of the inner tube sleeve 103, and the end of the permeate discharge interface 105 penetrates through the outer tube sleeve 104.

[0032] A permeate inlet interface 21 is provided on the side of the pressure tube 2 close to the tubular MBR membrane 1, and the permeate inlet interface 21 is connected to the permeate discharge interface 105.

[0033] For cleaning the membrane wall, by way of example, as Figures 1-5 shown, the present utility model further includes that a drain port 22 is provided at the bottom of the pressure tube 2, an air port 24 is provided at the top of the pressure tube 2, several groups of inclined and staggered water-retaining plates 23 are provided in the middle of the pressure tube 2, and a float valve 25 is provided at the bottom of the air port 24.

[0034] The exhaust end of the air pump 3 is connected to the air port 24.

[0035] In use, the pressure inside the pressure tube 2 is increased by the air pump 3, and the drain port 22 is closed, increasing the pressure on the outer wall of the ultrafiltration inner tube 102, which can promote the shedding of the dirt accumulated on the inner wall of the ultrafiltration inner tube 102, thereby improving the service life of the ultrafiltration inner tube 102.

[0036] When the present utility model is in use, the connectors 101 at both ends of the ultrafiltration inner tube 102 are respectively connected to the wastewater pipe and the concentrated water recovery pipe to be treated, and the flow direction is that the wastewater treatment pipe discharges through the ultrafiltration inner tube 102 to the concentrated water recovery pipe. During the flow of wastewater through the ultrafiltration inner tube 102, based on the selectivity of the pore size, only water molecules and solutes smaller than the membrane pore size can penetrate through the ultrafiltration inner tube 102 into the inner tube sleeve 103, while solutes larger than the membrane pore size are retained inside the ultrafiltration inner tube 102 and are sent to the concentrated water recovery pipe;

[0037] The inner tube sleeve 103 is heated by the ceramic heating tube 106, causing the temperature inside the inner tube sleeve 103 to rise. After the temperature rises, the viscosity of the activated sludge mixture decreases, thereby reducing the osmotic resistance and increasing the membrane flux, thus improving the efficiency of water treatment.

[0038] The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of protection required by the present utility model. The scope of protection required by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A tubular MBR membrane module, characterized in that: It comprises a tubular MBR membrane (1), a pressure pipe (2) and an air pump (3), wherein the pressure pipe (2) is connected to the tubular MBR membrane (1), and the air pump (3) is connected to the pressure pipe (2); The tubular MBR membrane (1) comprises a plurality of groups of ultra-filter inner tubes (102), both ends of the plurality of groups of ultra-filter inner tubes (102) being connected to joints (101) for water inlet and outlet, the outer surfaces of the plurality of groups of ultra-filter inner tubes (102) being provided with inner tube sleeves (103), and both ends of the inner tube sleeves (103) being fixedly connected to the joints (101); The outer sleeve of the inner sleeve (103) is provided with an outer sleeve (104), the two ends of the outer sleeve (104) are fixedly connected to the outer diameters of the two ends of the inner sleeve (103), the inner wall of the outer sleeve (104) is provided with a ceramic heating tube (106), and the ceramic heating tube (106) is in contact with the inner sleeve (103); The power line of the ceramic heating tube (106) is arranged to penetrate the outside of the outer tube sleeve (104).

2. A tubular MBR membrane assembly according to claim 1, characterized in that: A permeate discharge interface (105) is provided on one side of the inner tube sleeve (103), and an end of the permeate discharge interface (105) passes through the outer tube sleeve (104).

3. A tubular MBR membrane assembly according to claim 2, characterized in that: A permeate inlet interface (21) is provided on one side of the pressure pipe (2) close to the tubular MBR membrane (1), and the permeate inlet interface (21) is connected to a permeate discharge interface (105).

4. A tubular MBR membrane assembly according to claim 3, characterized in that: The bottom of the pressure pipe (2) is provided with a liquid discharge port (22), the top of the pressure pipe (2) is provided with an air port (24), a plurality of groups of inclined and staggered water blocking plates (23) are provided in the middle of the pressure pipe (2), and a floating ball valve (25) is provided at the bottom of the air port (24).

5. A tubular MBR membrane assembly according to claim 4, characterized in that: The exhaust end of the air pump (3) is connected to the air port (24).

Images