CN210097406U

CN210097406U - Combined supporting plate, membrane element and membrane bioreactor comprising same

Info

Publication number: CN210097406U
Application number: CN201821982473.6U
Authority: CN
Inventors: 陈福泰; 刘兴甜; 杨艳
Original assignee: Tsingdahua Environment Group Co Ltd
Current assignee: Tsingdahua Environment Group Co Ltd
Priority date: 2018-11-29
Filing date: 2018-11-29
Publication date: 2020-02-21
Anticipated expiration: 2028-11-29

Abstract

The utility model relates to a membrane element technical field discloses a combination backup pad, membrane element and contain its membrane bioreactor, the combination backup pad includes, supports frame, cavity backup pad, a plurality of water conservancy diversion hole, a plurality of mouth that catchments. The water guide holes, the hollow inner cavity of the hollow support plate and the water collecting port are communicated with each other, so that purified water enters the hollow inner cavity of the hollow support plate through the water guide holes, is collected to the water collecting port under the action of negative pressure and is discharged from the water collecting port. The utility model provides a combination backup pad, membrane element and contain its membrane bioreactor have overcome the ubiquitous material cost height of field, preparation method complicacy, product stability is poor, produce water inefficiency scheduling problem, under the prerequisite of guaranteeing membrane element service strength, are showing weight, the material cost that has reduced the monolithic lamina membranacea, have effectively improved and have produced water efficiency.

Description

Combined supporting plate, membrane element and membrane bioreactor comprising same

Technical Field

The utility model belongs to the technical field of the membrane element, concretely relates to combination backup pad, membrane element and contain its membrane bioreactor.

Background

In the technical field of sewage treatment and water resource recycling, a Membrane Bioreactor (MBR) is a novel water treatment technology combining a Membrane separation unit and a biological treatment unit, and a Membrane component is used for replacing a secondary sedimentation tank in the traditional activated sludge biological treatment technology to realize a high-efficiency sewage treatment function. Compared with the traditional biochemical water treatment technology, MBR mainly has the following advantages: the treatment efficiency is high, and the effluent quality is good; the equipment is compact and the occupied area is small; automatic control is easy to realize, and operation management is simple.

The membrane element is the core part of MBR, and the types of the current commercial membrane elements mainly include flat membrane, hollow fiber membrane, tubular membrane and the like. The traditional flat membrane elements at home and abroad are all composed of a supporting plate, two layers of supporting lining cloth and two layers of separating membranes, wherein the supporting plate is a solid ABS plate with water collecting flow grooves on the surfaces of two sides, and the weight and the cost of the solid ABS plate both account for more than 60 percent of the whole membrane element. For many years, researchers in the field have been working on reducing the cost of monolithic membrane elements by improving the structure of the support plates.

Chinese patent document CN107486038A discloses a composite flat filter membrane, its preparation method and application, wherein the composite flat filter membrane comprises a support layer and a filter layer, and contains five layers of structures, wherein three layers are support layers, two layers are filter layers, the support layer is formed by combining two layers of corrugated structure plates and one layer of flat structure plate, the filter layer is formed by directly coating casting solution on the support layer to form a membrane, and the three layers of support layers are formed by combining 3-10 layers of non-woven fabric rolled plates. The support material prepared by the method can be used as a flat membrane support layer and can also replace a flow guide net and an ABS support plate of the traditional flat membrane element. However, the preparation method is complicated, the cost is high, and the stability and the sealing property of the product are remained.

At present, the support plate of the flat membrane bioreactor generally has the problems of high material cost, complex preparation method, poor product stability, low water production efficiency and the like. How to reduce the weight and the material cost of the single membrane plate, increase the water production efficiency and improve the processing efficiency on the premise of ensuring the use strength of the membrane element is a technical problem to be solved urgently.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to overcome the defects of high material cost, complex preparation method, poor product stability and low water production efficiency in the prior art, thereby providing a combined supporting plate, a membrane element and a membrane bioreactor containing the same.

Therefore, the utility model provides a combined supporting plate, which comprises a supporting frame and a supporting frame,

the hollow supporting plate is arranged in the frame of the supporting frame and is fixed by the supporting frame;

the flow guide holes are arranged on two opposite side plate surfaces of the hollow support plate at intervals and are communicated with the hollow inner cavity of the hollow support plate so as to guide purified water into the hollow inner cavity;

and the water collecting ports are arranged on the supporting frame, are positioned at the water collecting end of the hollow supporting plate and are communicated with the hollow inner cavity so as to discharge purified water in the hollow inner cavity through the water collecting ports.

Furthermore, the combined supporting plate also comprises a plurality of water flow channels which are arranged in the hollow inner cavity, the extending direction of the water flow channels is consistent with the direction from the water collecting end to the opposite end of the water flow channels, and the flow guide holes are communicated with the water flow channels.

Furthermore, the diameter of each flow guide hole is 1-4mm, and the hole distance between every two adjacent flow guide holes is 5-300 mm.

Furthermore, the flow guide holes are uniformly distributed on the two oppositely-arranged side plate surfaces of the hollow support plate.

Further, the hollow support plate has an overall aperture ratio of not less than 80%, and not 100%.

Furthermore, the thickness of the hollow support plate is 2-8mm, and the side length of the cross section of the water flow channel is 2-8 mm.

Furthermore, along the direction from the water collecting end to the opposite end, the flow guide holes are arranged on the plate surface at intervals to form flow guide hole rows, and the flow guide hole rows are in one-to-one correspondence with the water flow channels and are communicated with each other.

Further, the hollow support plate is formed by extruding PP, PE, ABS or PVC materials.

Further, the length of the supporting frame is 600-2500mm, the width is 300-1000mm, and the thickness is 3-10 mm.

Furthermore, a lifting handle is arranged at the top end of the supporting frame and used for lifting the supporting frame.

Furthermore, the supporting frame is made of ABS, PP or PVC materials through injection molding.

Furthermore, a plurality of first bulges are arranged at intervals on the inner side of the frame at one end of the supporting frame opposite to the water collecting end, and the first bulges are suitable for being inserted into the end part of the water flow channel so as to fix the hollow supporting plate;

and along the length direction of the side frames, second grooves are formed in the inner sides of the two side frames which are oppositely arranged on the supporting frames, and the hollow supporting plate is suitable for being inserted into the second grooves so as to be fixed.

The utility model also provides a membrane element, the membrane element includes combination backup pad and separation membrane, the separation membrane set up in on the relative both sides face that sets up of combination backup pad.

Further, the membrane element also comprises,

welding lines arranged along four sides of the supporting frame to weld the separation membrane to the supporting frame;

and the water stopping line is arranged on the four sides of the supporting frame and is positioned on the inner side of the welding line so as to prevent the purified water from flowing to the welding line.

The utility model also provides a membrane bioreactor, the membrane bioreactor includes the membrane element.

The utility model discloses a theory of operation does: support frame and cavity backup pad and combine the combination backup pad as an organic whole through welding, gluing or mechanical fastening mode, wherein support the frame and encircle the cavity backup pad setting, both sides are the isolating membrane around the combination backup pad, and wherein the isolating membrane passes through ultrasonic bonding or hot melt welding technique and welds closely on supporting the welding line all around of frame. The combined supporting plate welded with the separation membrane is inserted into the membrane bracket and is immersed into the activated sludge tank, and sewage primarily purified by activated sludge enters a water flow channel in the hollow supporting plate through a flow guide hole in the hollow supporting plate after being filtered by the separation membrane from the outside of the combined flat plate membrane element and is finally pumped out from a water collecting port.

Compared with the prior art, the utility model have following advantage:

the utility model discloses a combination support plate is for supporting frame and cavity backup pad integrated configuration, and the backup pad is hollow structure, supports the frame and is solid core structure, and this kind of integrated configuration materials are few, light in weight, and the cost only is 20% -30% of traditional backup pad, and the backup pad has certain intensity for hollow structure, supports the frame with solid core and combines together and to guarantee the intensity and the stability of dull and stereotyped membrane element.

As the front side and the rear side of the supporting plate are fully distributed with the flow guide holes, the lining cloth is not needed to support and guide flow, and the lining cloth cost and the processing time are saved. According to the utility model discloses a combination dull and stereotyped membrane element that combination backup pad was assembled contains separation diaphragm, supports frame, 3 layer structures of cavity backup pad, has saved 2 layers of lining cloth compared traditional technology, and preparation method is simple, with low costs, processing is consuming time less.

The utility model discloses a combination backup pad adopts main part cavity backup pad, and around the cavity backup pad both sides all even be covered with the water conservancy diversion hole, whole percent opening more than 80%, compare in the limited catchment chute of the solid core plate of traditional ABS, reduced the water resistance, is showing and has accelerated the flow and the velocity of flow of output water to increased the product water flux in the unit interval, showing and improving product water efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view (front view) of the combined supporting plate of the present invention;

FIG. 2 is a schematic view (front view) of a hollow support plate and a partial structure of the support plate;

FIG. 3 is a schematic structural view (front view) of a portion A of the hollow support plate of FIG. 2, wherein the water flow channel in the hollow portion of the hollow support plate is parallel to the water collection port;

FIG. 4 is a cross-sectional structural view (front view) of portion A of the hollow support plate of FIG. 2;

FIG. 5 is a schematic view a (front view) of the supporting frame structure;

FIG. 6 is a schematic view b (front view) of the supporting frame structure

FIG. 7 is a side view of the slot 106 inside the support bezel of FIG. 6;

fig. 8 is a schematic view (front view) of the structure of the combined supporting frame.

1-supporting a frame; 101-a water collecting port; 102-a handle; 103-water stopping line; 104-weld line; 105-a bonding plane; 106-support frame inner side clamping groove; 107-inserting the fixing piece at the inner side of the lower frame; 108-left, right, upper frame overall structural framework; 109-lower border; 110-left and right side frame bottom grooves; 111-top convex parts at left and right positions of the lower frame; 2-a separation membrane; 3-a hollow support plate; 301-water flow channel; 302-guide flow holes.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. 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 "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", 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 and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

The embodiment provides a combined support plate and a membrane element, and as shown in fig. 1-5, the combined support plate comprises a support frame 1 and a hollow support plate 3, wherein the support frame 1 is arranged around the hollow support plate 3, a plurality of water flow channels 301 are arranged in a hollow inner cavity of the hollow support plate 3, flow guide holes 302 are uniformly arranged on the front side and the rear side of the hollow support plate 3, the flow guide holes 302 are communicated with the water flow channels 301, a water collection port 101 is arranged on the support frame 1, the water collection port 101 is positioned at a water collection end of the hollow support plate 3 and is communicated with the water flow channels 301, so that purified water enters the water flow channels 301 in the hollow support plate 3 through the flow guide holes 302, is collected to the water collection port 101 under the negative pressure effect, and.

The thickness of the hollow supporting plate 3 is 2-8mm, the side length of the cross section of the water flow channel 301 is 2-8mm, the diameter of the flow guide hole 302 is 1-4mm, and the hole distance between the adjacent flow guide holes is 5-300 mm. The diversion holes 302 are arranged at intervals to form diversion hole rows, and the diversion hole rows correspond to the water flow channels 301 one by one and are communicated with each other.

Support frame 1 and hollow support plate 3 through the welding, gluing or mechanical fastening mode combine the combination backup pad as an organic whole, wherein support frame 1 encircles 3 settings of hollow support plate, both sides are the isolating diaphragm 2 around the combination backup pad, wherein the isolating diaphragm 2 closely welds around supporting frame 1 through ultrasonic welding or hot melt welding technique, thereby form weld line 104 between isolating diaphragm 2 and support frame 1, specifically, isolating diaphragm 2 is dull and stereotyped separation diaphragm, the inboard of weld line 104 is equipped with stagnant water line 103, stagnant water line 103 is used for avoiding the interior product water of dull and stereotyped diaphragm to collect to welding seam department. The combined supporting plate after welding the membrane is inserted into the membrane bracket and is immersed into the activated sludge tank, the sewage primarily purified by the activated sludge is filtered by the separation membrane 2 from the outside of the combined flat plate membrane element to obtain purified water, and the purified water enters the water flow channel 301 in the hollow supporting plate 3 through the flow guide holes 302 and is finally pumped out through the water collecting port 101. Due to the porous multi-channel structure of the hollow supporting plate 3, the flowing speed of the produced water is accelerated, so that the water production flux in unit time is increased, and the water production efficiency is improved.

Example 2

The embodiment provides a combined support plate and a membrane element, and as shown in fig. 1-4, 6 and 7, the combined support plate comprises a support frame 1 and a hollow support plate 3, wherein the support frame 1 is arranged around the hollow support plate 3, a plurality of water flow channels 301 are arranged in a hollow inner cavity of the hollow support plate 3, flow guide holes 302 are uniformly arranged on the front side and the rear side of the hollow support plate 3, the flow guide holes 302 are communicated with the water flow channels 301, a water collection port 101 is arranged on the support frame 1, the water collection port 101 is positioned at a water collection end of the hollow support plate 3 and is communicated with the water flow channels 301, so that purified water enters the water flow channels 301 in the hollow support plate 3 through the flow guide holes 302, is collected to the water collection port 101 under the action of negative pressure and.

Along the length direction of the side frames, second grooves are formed in the inner sides of the two side frames which are oppositely arranged on the supporting side frame 1, the hollow supporting plate 3 is suitable for being inserted into the second grooves to fix the hollow supporting plate 3, specifically, the second grooves are supporting side frame inner side clamping grooves 106, and a schematic side view diagram of the supporting side frame inner side clamping grooves 106 is shown in fig. 7; a plurality of first bulges are arranged at intervals on the inner side of one end of the supporting frame 1 opposite to the water collecting end, the first bulges are suitable for being inserted into the end part of the water inlet channel 301 to fix the hollow supporting plate 3, and specifically, the first bulges are socket fixing pieces 107 on the inner side of the lower frame; the number of the socket fixing pieces 107 at the inner side of the lower frame in a single frame is 5-15, preferably 10, the height is 3-10mm, preferably 8mm, and the diameter is consistent with the length of the side of the water flow channel 301.

The hollow support plate 3 is mechanically fixed to the support frame 1 by being inserted into the inside slot 106 of the support frame, and the inside socket fixing member 107 of the lower frame is inserted into the water flow passage 301. The hollow support plate 3 is made of a hollow material with certain strength, can partially deform in the longitudinal and transverse directions of the support plate under the action of certain external force, and can restore to deform when the external force is removed, so that the support plate can be partially deformed under the action of certain external force, can be smoothly and mechanically fixed with the support frame inner side clamping groove 106 and the lower frame inner side socket fixing part 107 of the support frame 1, and the support frame 1 and the hollow support plate 3 are combined into a whole to form the combined support plate.

Both sides are separating film 2 around the combination backup pad, and wherein separating film 2 passes through ultrasonic bonding or hot melt welding technique and welds closely around supporting frame 1 to form weld line 104 between separating film 2 and supporting frame 1, specifically, separating film 2 is the dull and stereotyped separation diaphragm, and the inboard of weld line 104 is equipped with stagnant water line 103, and stagnant water line 103 is used for avoiding the interior product water of dull and stereotyped membrane to weld and locate to collect. The combined supporting plate welded with the membrane is inserted into the membrane bracket and is immersed into the activated sludge tank, and sewage primarily purified by activated sludge enters the water flow channel 301 in the hollow supporting plate 3 through the supporting plate flow guide holes 302 after being filtered by the separation membrane 2 from the outside of the combined flat plate membrane element and is finally extracted from the water collecting port 101. Due to the porous multi-channel structure of the hollow supporting plate 3, the flowing speed of the produced water is accelerated, so that the water production flux in unit time is increased, and the water production efficiency is improved.

Example 3

The embodiment provides a combined support plate and a membrane element, and as shown in fig. 1-4 and 8, the combined support plate comprises a support frame 1 and a hollow support plate 3, wherein the support frame 1 is arranged around the hollow support plate 3, a plurality of water flow channels 301 are arranged in a hollow inner cavity of the hollow support plate 3, flow guide holes 302 are uniformly arranged on the front side and the rear side of the hollow support plate 3, the flow guide holes 302 are communicated with the water flow channels 301, a water collection port 101 is arranged on the support frame 1, the water collection port 101 is positioned at a water collection end of the hollow support plate 3 and is communicated with the water flow channels 301, so that purified water enters the water flow channels 301 in the hollow support plate 3 through the flow guide holes 302, is collected to the water collection port 101 under the action of negative pressure and.

Along the length direction of the frame, second grooves are formed in the inner sides of the two side frames which are oppositely arranged on the supporting frame 1, the hollow supporting plate 3 is suitable for being inserted into the second grooves in an embedded mode so as to fix the hollow supporting plate 3, and specifically, the second grooves are supporting frame inner side clamping grooves 106; a plurality of first bulges are arranged at intervals on the inner side of one end of the supporting frame 1 opposite to the water collecting end, the first bulges are suitable for being inserted into the end part of the water inlet channel 301 to fix the hollow supporting plate 3, and specifically, the first bulges are socket fixing pieces 107 on the inner side of the lower frame; the supporting frame 1 is composed of a left, right and upper frame overall structure frame 108 and a lower frame 109 in a splicing fixing mode, wherein the splicing points are left and right frame bottom grooves 110 of the left and right frame overall structure frame 108 and left and right position top protrusions 111 of the lower frame. The number of the socket fixing pieces 107 in a single frame is 5-15, preferably 10, the height is 3-10mm, preferably 8mm, and the diameter is consistent with the length of the side of the cross section of the water flow channel 301.

Hollow support plate 3 slides into left and right through support frame inboard draw-in groove 106 earlier, go up in frame overall structure frame 108, and inlay lower frame inboard socket joint mounting 107 in hollow support plate 3 corresponds rivers passageway 301, position top bellying 111 is pegged graft in left and right side in the left and right frame bottom recess 110 of frame overall structure frame 108 about with the lower frame again, left and right, go up frame overall structure frame 108 and the both ends of lower frame 109 are pegged graft respectively fixedly, it is sealed to glue in grafting gap department, support frame 1 and hollow support plate 3 combination backup pad as an organic whole.

Both sides are separating film 2 around the combination backup pad, and wherein separating film 2 passes through ultrasonic bonding or hot melt welding technique and welds closely around supporting frame 1 to form weld line 104 between separating film 2 and supporting frame 1, specifically, separating film 2 is the dull and stereotyped separation diaphragm, the inboard of weld line 104 is equipped with stagnant water line 103, and stagnant water line 103 is used for avoiding the interior product water of dull and stereotyped membrane to weld and locates to collect. The combined supporting plate welded with the membrane is inserted into the membrane bracket and is immersed into the activated sludge tank, and sewage primarily purified by activated sludge enters the water flow channel 301 in the hollow supporting plate 3 through the flow guide holes 302 after being filtered by the separation membrane 2 from the outside of the combined flat plate membrane element and is finally pumped out from the water collecting port 101. Due to the porous multi-channel structure of the hollow supporting plate 3, the flowing speed of the produced water is accelerated, so that the water production flux in unit time is increased, and the water production efficiency is improved.

Example 4

On the basis of the embodiments 1-3, in order to increase the discharge speed of the purified water and lead the purified water out in time, the embodiment provides an improved implementation mode, the water collecting port 101 is positioned at the water collecting end of the hollow supporting plate 3, and the extending direction of the water flow channel 301 is consistent with the direction from the water collecting end to the opposite end;

as a modified embodiment, the water collection port 101 is located at the water collection end of the hollow support plate 3, and the water flow channel 301 extends in a direction perpendicular to the direction from the water collection end to the opposite end thereof.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. A combined supporting plate comprises a supporting frame and is characterized by also comprising,

2. The modular support plate of claim 1 further comprising,

the water flow channels are arranged in the hollow inner cavity, the extending direction of the water flow channels is consistent with the direction from the water collecting end to the opposite end of the water flow channels, and the flow guide holes are communicated with the water flow channels.

3. The composite support plate of claim 2, wherein the diameter of the flow guide holes is 1-4mm, and the hole pitch between adjacent flow guide holes is 5-300 mm.

4. The composite support plate of claim 3, wherein the hollow support plate has an overall open porosity of not less than 80% and not 100%.

5. The composite support plate of claim 4, wherein the hollow support plate has a thickness of 2-8mm, and the water flow channel has a cross-sectional side length of 2-8 mm;

and the flow guide holes are arranged on the plate surface at intervals along the direction from the water collection end to the opposite end to form flow guide hole rows, and the flow guide hole rows are in one-to-one correspondence with the water flow channels and are communicated with each other.

6. The assembled supporting plate as claimed in any one of claims 1 to 5, wherein the supporting frame has a length of 600-2500mm, a width of 300-1000mm and a thickness of 3-10 mm.

7. The composite support plate of claim 2, wherein a plurality of first protrusions are spaced apart from the inner side of the support frame at one end of the support frame opposite to the water collecting end, and the first protrusions are adapted to be inserted into the end of the water flow channel to fix the hollow support plate;

along the length direction of the inner side of the frame at one end of the supporting frame, second grooves are formed in the inner sides of the frames on two opposite sides of the supporting frame, and the hollow supporting plate is suitable for being inserted into the second grooves to fix the hollow supporting plate.

8. A membrane element comprising a composite support plate according to any one of claims 1 to 7, wherein separation membranes are provided on opposite sides of the composite support plate.

9. A membrane element as claimed in claim 8, further comprising,

10. A membrane bioreactor, comprising a membrane element according to claim 8 or 9.