CN209815771U

CN209815771U - Membrane biological reaction device

Info

Publication number: CN209815771U
Application number: CN201920541197.8U
Authority: CN
Inventors: 王宗丽; 王海舟; 亢春喜; 黎晓航
Original assignee: Pingxiang University
Current assignee: Pingxiang University
Priority date: 2019-04-20
Filing date: 2019-04-20
Publication date: 2019-12-20
Anticipated expiration: 2029-04-20

Abstract

The utility model discloses a membrane bioreactor, which comprises a reactor, a membrane group component, a membrane component and an aeration device; the membrane group component sets up reactor bottom, membrane group component include membrane support, a plurality of rectangular frame, two thermoplastic plastic boards, collector pipe and outlet pipe, and a plurality of rectangular frame equidistance distributes inside the membrane support, and the membrane subassembly includes fourteen dull and stereotyped diaphragm one and sixteen dull and stereotyped diaphragm two, and fourteen dull and stereotyped diaphragm one evenly sets up in a plurality of rectangular frame's vertical inboard, and sixteen dull and stereotyped diaphragm two evenly set up in a plurality of rectangular frame's horizontal both sides, and aeration equipment sets up in membrane support bottom. The utility model discloses mechanical strength is high, chemical stability is good, solves the easy problem of blockking up and difficult abluent of hollow fiber membrane.

Description

Membrane biological reaction device

Technical Field

The utility model relates to a water treatment facilities technical field, concretely relates to handle dull and stereotyped ceramic membrane bioreactor of submergence formula of ammonia nitrogen waste water.

Background

At present, a Membrane Bioreactor (MBR) is a novel wastewater treatment technology combining a biological method (activated sludge process) and a Membrane module, and has become an indispensable treatment technology in domestic sewage treatment, particularly industrial wastewater treatment.

The membrane component of the membrane bioreactor mostly adopts a hollow fiber membrane which is divided into ultrafiltration, nanofiltration and microfiltration, and has the advantages of high treatment efficiency, good effluent quality, compact equipment, small occupied area, easy realization of automatic control, simple operation management and the like. However, there are certain disadvantages, such as: the membrane component is not acid-resistant and alkali-resistant, is not resistant to heavy metals, has high membrane manufacturing cost, has serious membrane pollution condition and the like. With the continuous development of ceramic industry, ceramic membranes with acid resistance, alkali resistance and high temperature resistance are formed, and corresponding membrane components are developed and widely applied to industrial wastewater treatment.

The ammonia nitrogen-containing wastewater is mainly treated by a biological method (biological denitrification mainly comprises the combined action of a nitrification process and a denitrification process so as to realize Synchronous Nitrification and Denitrification (SND) and achieve NH₄ ⁺Efficient removal of-N. The existing ceramic membrane biological reaction device is mostly a traditional component, can only use the ceramic membrane to filter and separate, has single effect, and can not meet the treatment requirement of wastewater containing ammonia nitrogen.

Disclosure of Invention

The utility model provides a membrane bioreactor aiming at the problems, which comprises a reactor, a membrane group component, a membrane component and an aeration device; the membrane group component is arranged at the bottom of the reactor and comprises a membrane support, a plurality of rectangular frames, two thermoplastic plastic plates, water collecting pipes and a water outlet pipe, wherein the rectangular frames are equidistantly distributed in the membrane support, the two thermoplastic plastic plates are equidistantly distributed on the left side and the right side of the membrane support, the water collecting pipes are arranged at the upper part and the lower part of the membrane support, and the water outlet pipe is connected with the water collecting pipes through connecting pipes; the diaphragm assembly comprises fourteen first flat diaphragms and sixteen second flat diaphragms, the fourteen first diaphragms are uniformly arranged on the vertical inner sides of the rectangular frames, and the sixteen second diaphragms are uniformly arranged on the horizontal two sides of the rectangular frames; the aeration device comprises an aeration base, an aeration support and an aeration system, wherein the aeration base is arranged at the bottom of the membrane support, the aeration support is arranged on the aeration base, and the aeration system is uniformly distributed below the rectangular frames through the aeration support.

Further, the membrane support is formed by connecting angle steel columns.

Furthermore, the membrane component is a hollow ceramic piece made of a-Al₂O₃Wherein the membrane has a hollow pore, a membrane pore diameter of 0.1 to 5 μm, pure water flux: 1-4m³/m²·h·bar。

Furthermore, the hollow volumes of the fourteen first flat diaphragms in the rectangular frames are 1100mm long, 400mm wide and 25mm thick.

Furthermore, the hollow volumes of the sixteen second flat diaphragms in the rectangular frames are 1100mm long, 530mm wide and 25mm thick.

Furthermore, the water collecting pipe is made of U-PVC materials with the outer diameter of 32 mm.

Furthermore, the plurality of rectangular frames are all provided with a stirrer, the stirrer comprises a rotating shaft, two fixed plates, two fixed rods and a plurality of stirring frames, the rotating shaft is externally connected with a driving motor, the driving motor is commercially available, the two fixed plates are symmetrically arranged at the upper end and the lower end of the rotating shaft, the two fixed rods are symmetrically arranged at the left end and the right end of the two fixed plates, the plurality of stirring frames are uniformly distributed on the two fixed rods, the plurality of stirring frames comprise two rotating blocks, two groups of movable rods and stirring rods, the two rotating blocks are symmetrically arranged on the fixed rods and are in sliding connection with the fixed rods, the two rotating blocks are both connected with racks, a gear is arranged between the racks, the gear is externally connected with a stepping motor, the stepping motor is externally connected with a driving power supply, and the stepping motor is commercially available, one ends of the two groups of moving rods are hinged with the two rotating blocks, and the other ends of the two groups of moving rods are hinged with the stirring rod.

The core element of the utility model adopts the diaphragm component with the microporous membrane and the high-purity Al₂O₃The flat membrane I and the flat membrane II with the composite membrane structure have the characteristics of high mechanical strength, strong bearing capacity, good chemical stability, uniform porosity distribution, large water flux, good pollution resistance, easiness in cleaning and regeneration, long service life, high economy and the like, and solve the problems of easiness in corrosion, blockage and difficulty in cleaning of the traditional hollow fiber membrane. Meanwhile, the rectangular frame structure is adopted to improve the ammonia nitrogen removal effect, and the problem that the ammonia nitrogen effluent does not reach the standard can be effectively solved; and meanwhile, the membrane element is stirred by the stirring frame, so that the efficiency of the membrane element for sewage permeation and purification is improved.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

FIG. 1 is a schematic structural view of a membrane module according to the present invention;

FIG. 2 is a schematic cross-sectional view of 1-1 of FIG. 1;

FIG. 3 is a schematic cross-sectional view of 2-2 of FIG. 1;

fig. 4 is a schematic structural view of the stirring frame of the present invention.

Reference numerals:

1 is a reactor, 2 is a membrane group component, 3 is a membrane component, 4 is an aeration device, 21 is a membrane support, 22 is a rectangular frame, 23 is a thermoplastic plastic plate, 24 is a water collecting pipe, 25 is a water outlet pipe, 3 is a membrane component, 31 is a first flat membrane, 32 is a second flat membrane, 4 is an aeration device, 41 is an aeration base, 42 is an aeration support, 43 is an aeration system, 5 is a stirring frame, 51 is a rotating shaft, 52 is a fixing plate, 53 is a fixing rod, 54 is a stirring frame, 55 is a rotating block, 56 is a moving rod, 57 is a stirring rod, 58 is a rack, and 59 is a gear.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1 to 3, as shown in fig. 1 to 3, comprising a reactor 1, a membrane module member 2, a membrane module 3 and an aeration device 4; the membrane group component 2 is arranged at the bottom of the reactor 1 through a bolt device under the membrane group component 2, the membrane group component 2 comprises a membrane support 21, a plurality of rectangular frames 22, two thermoplastic plastic plates 23, a water collecting pipe 24 and a water outlet pipe 25, the plurality of rectangular frames 22 are distributed in the membrane support 21 at equal intervals,

preferably, the plurality of rectangular frames 22 is preferably fourteen rectangular frames 22;

the membrane support 21 is formed by connecting angle steel columns, the angle steel columns adopt L50 x 5, the bent angles adopt 90-degree elbows and tees to form, two thermoplastic plastic plates 23 are equidistantly distributed on the left side and the right side of the membrane support 21, the water collecting pipes 24 are arranged at the upper part and the lower part of the membrane support 21, the water collecting pipes 24 adopt phi 32U-PVC materials, the water outlet pipe 25 is connected with the water collecting pipes 24 through connecting pipes, and water is discharged from the water outlet pipe of the DN25 galvanized steel pipe after collection; the membrane component 3 is a microporous membrane and high-purity Al₂O₃Hollow ceramic member of composite membrane structure having hollow pores therein, membrane pore diameter of 0.5 μm, pure water flux: 2m³/m²H.bar; the membrane component 3 comprises fourteen first flat membrane 31 and sixteen second flat membrane 32, the bottom of the membrane component 3 needs to be independently connected to the membrane group component 2, fourteen first flat membrane 31 and sixteen second flat membrane 32, the upper and lower ends are respectively connected and fixed with the membrane group component 2 in a vertical manner, the fourteen first flat membrane 31 is uniformly arranged on the vertical inner side of the fourteen rectangular frames 22, the hollow volume of the fourteen first flat membrane 31 in the fourteen rectangular frames 22 is 1100mm long, the width is 400mm, the thickness of the fourteen first flat membrane is 25mm, the sixteen second flat membrane 32 is uniformly arranged on the two sides of the fourteen rectangular frames 22 in the horizontal direction, the hollow volume of the sixteen second flat membrane 32 in the fourteen rectangular frames 22 is 1100mm long, the width is 1100mm530mm, and the thicknesses of the sixteen flat membrane pieces are all 25 mm; the aeration device 4 comprises an aeration base 41, an aeration support 42 and an aeration system 43, wherein the aeration base 41 is arranged at the bottom of the membrane support 21, the aeration support 42 is arranged on the aeration base 41, and the aeration system 43 is uniformly distributed below the fourteen rectangular frames 22 through the aeration support 42.

Referring to fig. 4, as shown in fig. 4, the fourteen rectangular frames 22 are each provided with the agitator 5, the agitator 5 includes a rotating shaft 51, two fixing plates 52, two fixing rods 53, and a plurality of agitating brackets 54, the two fixing plates 52 are symmetrically disposed at the upper and lower ends of the rotating shaft 51, the two fixing rods 53 are symmetrically disposed at the left and right ends of the two fixing plates 52,

preferably, the plurality of stirring racks 54 is preferably four stirring racks 54;

four stirring racks 54 evenly distributed are on two dead levers 53, and a plurality of stirring rack 54 all includes two turning blocks 55, two sets of swinging arms 56, puddler 57, and two turning blocks 55 symmetries set up on dead lever 53, and turning block 55 is sliding connection with dead lever 53, and two turning blocks 55 all are connected with rack 58, are equipped with gear 59 between rack 58, and two sets of swinging arms 56 one end all are articulated with two turning blocks 55, and the other end is articulated with puddler 57.

The utility model discloses a working method: during the use, directly soak membrane group component 2 in the sewage bottom of the pool, distribute into activated sludge in the rectangular frame 22 structural space that membrane module 3 made up, adopt aeration equipment 3 to be located the sewage bottom of the pool and carry out the aeration, adopt the form of negative pressure suction to filter, sewage after the aeration gets into in the cavity hole in dull and stereotyped membrane one 31 and dull and stereotyped membrane two 32, handle the back through membrane module 3 and flow out from the apopore and get into collector pipe 24, and get into outlet pipe 25 through the connecting pipe, also, start axis of rotation 51 and stir, gear 59 and rack 58 meshing, the positive and negative rotation of control gear 59, drive movable rod 56 and move on dead lever 53, promote puddler 57 constantly to stretch out and contract.

The utility model discloses a core component adopts and has microporous membrane and high-purity Al on diaphragm subassembly 3₂O₃The first flat diaphragm 31 and the second flat diaphragm 32 of the composite membrane structure ensure that the diaphragms have high mechanical strength and strong bearing capacityThe hollow fiber membrane has the characteristics of good chemical stability, uniform porosity distribution, large water flux, good pollution resistance, easy cleaning and regeneration, long service life, high economy and the like, and solves the problems of easy corrosion, easy blockage and difficult cleaning of the traditional hollow fiber membrane. Meanwhile, the rectangular frame 22 structure is adopted to improve the ammonia nitrogen removal effect, and the problem that the ammonia nitrogen effluent does not reach the standard can be effectively solved; meanwhile, the membrane element is stirred by the stirring frame 5, so that the efficiency of the membrane element for sewage permeation and purification is improved.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A membrane bioreactor is characterized by comprising a reactor (1), a membrane group component (2), a membrane component (3) and an aeration device (4); the membrane group component (2) is arranged at the bottom of the reactor (1), the membrane group component (2) comprises a membrane support (21), a plurality of rectangular frames (22), two thermoplastic plastic plates (23), a water collecting pipe (24) and a water outlet pipe (25), the plurality of rectangular frames (22) are equidistantly distributed inside the membrane support (21), the two thermoplastic plastic plates (23) are equidistantly distributed on the left side and the right side of the membrane support (21), the water collecting pipe (24) is arranged on the upper portion and the lower portion of the membrane support (21), and the water outlet pipe (25) is connected with the water collecting pipe (24) through a connecting pipe; the diaphragm assembly (3) comprises fourteen first flat diaphragms (31) and sixteen second flat diaphragms (32), the fourteen first flat diaphragms (31) are uniformly arranged on the vertical inner sides of the rectangular frames (22), and the sixteen second flat diaphragms (32) are uniformly arranged on the horizontal two sides of the rectangular frames (22); the aeration device (4) comprises an aeration base (41), an aeration support (42) and an aeration system (43), wherein the aeration base (41) is arranged at the bottom of the membrane support (21), the aeration support (42) is arranged on the aeration base (41), and the aeration system (43) is uniformly distributed below the rectangular frames (22) through the aeration support (42).

2. A membrane bioreaction device according to claim 1, characterised in that the membrane support (21) is formed by connecting angle steel columns.

3. A membrane bioreactor according to claim 1, characterized in that the membrane module (3) is a hollow ceramic piece made of a-Al₂O₃Wherein the membrane has a hollow pore, a membrane pore diameter of 0.1 to 5 μm, pure water flux: 1-4m³/m²·h·bar。

4. A membrane bioreaction device according to claim 1, wherein the fourteen first flat membrane pieces (31) have hollow volumes in the rectangular frames (22) of 1100mm in length and 400mm in width, and fourteen first flat membrane pieces (31) have thicknesses of 25 mm.

5. A membrane bioreaction device according to claim 1, wherein the hollow volumes of the sixteen second flat membrane sheets (32) in the rectangular frames (22) are all 1100mm long and 530mm wide, and the sixteen second flat membrane sheets (32) are all 25mm thick.

6. The membrane bioreactor according to claim 1, characterized in that the water collecting pipe (24) is made of U-PVC with an outer diameter of 32 mm.

7. The membrane biological reaction device according to claim 1, wherein the plurality of rectangular frames (22) are provided with a stirrer (5), the stirrer (5) comprises a rotating shaft (51), two fixing plates (52), two fixing rods (53) and a plurality of stirring frames (54), the two fixing plates (52) are symmetrically arranged at the upper end and the lower end of the rotating shaft (51), the two fixing rods (53) are symmetrically arranged at the left end and the right end of the two fixing plates (52), the plurality of stirring frames (54) are uniformly distributed on the two fixing rods (53), the plurality of stirring frames (54) comprise two rotating blocks (55), two groups of moving rods (56) and stirring rods (57), the two rotating blocks (55) are symmetrically arranged on the fixing rods (53), the rotating blocks (55) are in sliding connection with the fixing rods (53), the two rotating blocks (55) are connected with racks (58), a gear (59) is arranged between the racks (58), one end of each of the two groups of moving rods (56) is hinged with the two rotating blocks (55), and the other end of each of the two groups of moving rods is hinged with the stirring rod (57).