CN212374993U

CN212374993U - High-efficiency fluidized MBR (membrane bioreactor)

Info

Publication number: CN212374993U
Application number: CN202020607789.8U
Authority: CN
Inventors: 吴华
Original assignee: SHANGHAI SEVOO ENVIRONMENT TECHNOLOGY CO LTD
Current assignee: SHANGHAI SEVOO ENVIRONMENT TECHNOLOGY CO LTD
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2021-01-19
Anticipated expiration: 2030-04-21

Abstract

The utility model relates to a sewage treatment membrane bioreactor technical field specifically discloses a high-efficient fluidization MBR membrane bioreactor, including tank reactor and flat membrane module, be provided with flat membrane module in the tank reactor, be provided with the passageway in the flat membrane module, flat membrane module bottom is provided with the aeration case, the aeration case has the aeration through the pipe connection to provide equipment, tank reactor top one side is provided with the through-hole, and is provided with the product water pipeline in the through-hole, product water pipeline is connected with the water pump, tank reactor top opposite side is provided with the overflow mouth, and the overflow mouth in-connection has the overflow pipe, tank reactor's bottom one side is provided with the water inlet, the water inlet in-connection has the inlet tube. The flat membrane component is used for high-efficiency membrane separation and also used as a flow state distributor to achieve the effects of dispersion and uniform distribution, and the aeration channel which is communicated from top to bottom can form the air stripping effect through full perforation or micropore aeration.

Description

High-efficiency fluidized MBR (membrane bioreactor)

Technical Field

The utility model relates to the technical field of sewage treatment membrane bioreactors, in particular to a high-efficiency fluidized MBR (membrane bioreactor).

Background

Although the conventional biochemical aerobic process is also a three-phase flow state of sewage, activated sludge and aeration, the conventional biochemical aerobic process is not designed into a form which cannot generate a fluidized state due to an overlarge area-height ratio, and the flow state distribution cannot be uniform without the help of a distributor.

Although the fluidized bed aerobic reactor can generate a three-phase fluidized state, the concentration of the operating activated sludge is low because of no help of high-efficiency separation of the membrane component, and the high-efficiency biochemical effect of the membrane bioreactor can not be realized actually.

In the existing MBR membrane bioreactor process technology, hollow fibers and soft membranes have no fixed channels and cannot uniformly distribute fluid; the traditional flat membrane bioreactor generally only adopts one layer or at most two layers of membrane components, the floor area of the immersed or external membrane reactor is far larger than the projection area of the membrane components, and the formed three-phase flow states of sewage, activated sludge and aeration are only partial and low-layer and cannot be uniformly and completely presented in the whole bioreactor, so that the contribution of the fluidization effect, namely high-efficiency oxygen transfer and mass transfer efficiency to biochemistry cannot be reflected, and the high energy consumption of the membrane bioreactor cannot be improved.

Disclosure of Invention

The utility model aims to provide a high-efficient fluidization MBR membrane bioreactor to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high-efficient fluidization MBR membrane bioreactor, including tank reactor and flat membrane module, be provided with flat membrane module in the tank reactor, be provided with the passageway in the flat membrane module, flat membrane module bottom is provided with the aeration case, the aeration case has the aeration through pipe connection to provide equipment, tank reactor top one side is provided with the through-hole, and be provided with the product water pipeline in the through-hole, the product water pipeline is connected with the water pump, tank reactor top opposite side is provided with the overflow mouth, and the overflow mouth in-connection has the overflow pipe, tank reactor's bottom one side is provided with the water inlet, the water inlet in-connection has the inlet tube.

Preferably, the flat membrane module is a multi-layer MBR flat membrane module structure, and the flat membrane module and the tank reactor form a fluidized reactor structure circulating up and down.

Preferably, the height of the flat membrane module is 2-5m, the ratio of the projected areas of the flat membrane module and the tank reactor is 50-75%, and the channel distance between the membrane plates of the flat membrane module is 3-10 mm.

Preferably, the tank reactor is of a round tank, square or rectangular configuration.

Preferably, the aeration providing device is a perforated or microporous aeration structure, and the aeration intensity per unit area of the aeration providing device is 0.5-1.5 m/min.

Compared with the prior art, the beneficial effects of the utility model are that: the adopted flat membrane component is not only used for high-efficiency membrane separation, but also used as a flow state distributor, thereby achieving the effects of dispersion and uniform distribution; the aeration channel which is communicated from top to bottom is fully perforated or aerated in a micropore manner, so that an air stripping effect is formed, sewage entering from the bottom of the tank reactor and activated sludge mixed liquor at the bottom are lifted to the top of the flat membrane component in a corresponding slugging flow state, the membrane surface is washed to prevent membrane fouling, and full three-phase contact is carried out during the process, so that effective oxygen transfer and mass transfer are completed, and high-concentration microbial bacteria perform full oxidative decomposition by using oxygen to degrade organic matters in the sewage; the three-phase mixed liquid which is raised to the upper part of the flat membrane module descends from the clearance between the flat membrane module and the tank reactor to form a circulating three-phase fluidized state.

Drawings

Fig. 1 is one of the overall structural diagrams of the present invention;

fig. 2 is a second schematic view of the overall structure of the present invention.

In the figure: 1. a tank reactor; 2. a flat membrane module; 3. an aeration tank; 4. an aeration providing device; 5. a water production pipeline; 6. an overflow port; 7. an overflow pipe; 8. a channel; 9. a water inlet; 10. and (4) a water pump.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a high-efficient fluidization MBR membrane bioreactor, including tank reactor 1 and flat membrane module 2, evenly distributed sewage is intake (liquid phase), activated sludge and aeration bubble, form the three-phase fluidization membrane bioreactor of upper and lower circulation, be provided with flat membrane module 2 in the tank reactor 1, be provided with passageway 8 in the

flat membrane module

2, 2 bottoms of flat membrane module are provided with aeration tank 3, aeration tank 3 has aeration to provide equipment 4 through the pipe connection, 1 top one side of tank reactor is provided with the through-hole, and be provided with product water pipeline 5 in the through-hole, product water pipeline 5 is connected with

water pump

10, 1 top opposite side of tank reactor is provided with overflow mouth 6, and overflow mouth 6 in-connection has

overflow pipe

7, 1 bottom one side of tank reactor is provided with water inlet 9, water inlet 9 in-connection has the inlet tube.

The flat membrane component 2 is of a multi-layer MBR flat membrane component structure, and the flat membrane component 2 and the tank reactor 1 form a fluidized reactor structure which circulates up and down.

The height of the flat membrane component 2 is 2-5m, and the high-efficiency fluidization state can be generated only when the proportion of the projection area of the flat membrane component 2 and the projection area of the tank reactor 1 reaches more than 50%, so that the ratio of the projection area of the flat membrane component 2 to the projection area of the tank reactor 1 is 50-75%, the channel distance between the membrane plates of the flat membrane component 2 is 3-10mm, and the interval of aeration channels of the flat membrane component 2 is more than 3mm, so that the surging flow can be generated under the driving of the rising of perforated aeration bubbles, and the membrane fouling and blockage can be effectively prevented and the three-phase high-efficiency contact mass transfer and oxygen transfer effects accompanied with turbulent fluidization are effectively prevented.

The tank reactor 1 is in a round tank shape, square or rectangular structure.

The aeration providing equipment 4 is a perforated or microporous aeration structure, the initial aeration bubble diameter is larger than 1mm, the optimal range is 1-5mm, the aeration providing equipment 4 is uniformly arranged as much as possible, ascending bubble flows are generated in all the flat membrane spaced channels in a balanced manner, and the aeration intensity of the aeration providing equipment 4 per unit area is 0.5-1.5 m/min.

The working principle is as follows: when in use, the aeration channel 8 which is vertically communicated with the flat membrane component 2 is fully perforated or aerated through the aeration providing equipment 4, so that an air stripping effect can be formed, sewage and activated sludge mixed liquor at the bottom which enter from a water gap 9 at the bottom of the tank reactor 1 are lifted to the top of the flat membrane component 2 in a corresponding slugging flow state, the membrane surface is washed to prevent membrane fouling, sufficient three-phase contact is carried out during the process, effective oxygen transfer and mass transfer are completed, high-concentration microbial bacteria perform full oxidative decomposition by using oxygen to degrade organic matters in the sewage, the three-phase mixed liquor which is lifted to the upper part of the flat membrane component 2 descends from a gap between the flat membrane component 2 and the tank reactor 1 to form a circulating three-phase fluidized state, redundant liquid flows out through the overflow port 6, flows out of the tank reactor 1 through the overflow pipe 7, and water in the tank reactor 1 is discharged through the water production pipeline 5, and is delivered by the water pump 10.

Example 1:

referring to FIG. 1, 8 layers of integrated flat membrane modules 2 are adopted, the height of the flat membrane modules 2 reaches 5.2 m, and a tank reactor 1 is a round tank reactorThe reactor is 6 meters in height, the ratio of the projection area of the flat membrane component 2 to the projection area of the tank reactor 1 is up to 70 percent, the aeration channel 8 of the flat membrane component 2 has a gap of 5mm, and the aeration intensity is 1 m/min; the high-efficiency fluidized MBR reactor can be used for treating COD and NH in the actual operation of domestic sewage₃The removal efficiency of N and other organic matters reaches over 99 percent, which is not only higher than that of the traditional biochemical process, but also higher than that of the common MBR by over 50 percent.

Example 2:

referring to FIG. 2, a 6-layer integrated flat membrane module 2 is adopted, a tank reactor 1 is a rectangular tank reactor, the projection area of the flat membrane module 2 and the tank reactor 1 accounts for 50%, the aeration channel 8 of the flat membrane module 2 has a gap of 8mm, and the aeration intensity is 0.8 m/min; in the actual operation of the high-efficiency fluidized MBR for actually treating industrial sewage, the membrane fouling period is 1.5 times longer than that of the common MBR, and the volume load is more than one time higher than that of the common MBR under the conditions of the same water yield and the same effluent quality.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An efficient fluidized MBR (membrane bioreactor) comprises a tank reactor (1) and a flat membrane component (2), and is characterized in that: be provided with dull and stereotyped membrane module (2) in tank reactor (1), be provided with passageway (8) in dull and stereotyped membrane module (2), dull and stereotyped membrane module (2) bottom is provided with aeration tank (3), aeration tank (3) have aeration through pipe connection to provide equipment (4), tank reactor (1) top one side is provided with the through-hole, and be provided with product water pipeline (5) in the through-hole, product water pipeline (5) are connected with water pump (10), tank reactor (1) top opposite side is provided with overflow mouth (6), and overflow mouth (6) in-connection has overflow pipe (7), tank reactor (1) bottom one side is provided with water inlet (9), water inlet (9) in-connection has the inlet tube.

2. The MBR membrane bioreactor with high efficiency and fluidization according to claim 1, wherein: the flat membrane component (2) is of a multi-layer MBR flat membrane component structure, and the flat membrane component (2) and the tank reactor (1) form a fluidized reactor structure circulating up and down.

3. The MBR membrane bioreactor with high efficiency and fluidization according to claim 1, wherein: the height of the flat-plate membrane component (2) is 2-5m, the ratio of the projection areas of the flat-plate membrane component (2) and the tank reactor (1) is 50-75%, and the channel distance between the membrane plates of the flat-plate membrane component (2) is 3-10 mm.

4. The MBR membrane bioreactor with high efficiency and fluidization according to claim 1, wherein: the tank reactor (1) is in a round tank shape, a square or a rectangular structure.

5. The MBR membrane bioreactor with high efficiency and fluidization according to claim 1, wherein: the aeration providing equipment (4) is a perforated or microporous aeration structure, and the aeration intensity per unit area of the aeration providing equipment (4) is 0.5-1.5 m/min.