CN213995465U - Membrane filter - Google Patents
Membrane filter Download PDFInfo
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- CN213995465U CN213995465U CN202022943080.8U CN202022943080U CN213995465U CN 213995465 U CN213995465 U CN 213995465U CN 202022943080 U CN202022943080 U CN 202022943080U CN 213995465 U CN213995465 U CN 213995465U
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Abstract
The utility model discloses a membrane filter, which comprises a filter tank, wherein the upper part of the filter tank is provided with a water inlet and a backwashing liquid outlet; the position of the water inlet is positioned above the backwashing liquid outlet; a membrane module mounted within the filtration tank; the backwashing mechanism is arranged at the bottom in the filter tank and has a certain distance with the lower surface of the membrane component; and quartz sand filled in the filter tank and submerging the membrane module and the backwashing mechanism. The utility model provides a membrane filter has carried out the preliminary treatment to waste water through quartz sand, guarantees membrane flux and water production ability.
Description
Technical Field
The utility model relates to a water treatment technical field especially relates to a membrane filter.
Background
The membrane filter is a high-precision filtering device, and can remove suspended substances in water by nearly 100% in practical application. However, because the membrane filtration device has extremely high filtration precision, if the concentration of the pollutants in the water is high, the membrane flux is often rapidly attenuated, and the water production capacity of the membrane filtration device is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve among the prior art membrane filter membrane surface attached impurity etc. and cause the flux to attenuate fast, the problem that membrane filter equipment's water production ability descends provides a membrane filter, has carried out the preliminary treatment through quartz sand to waste water, guarantees membrane flux and water production ability.
The utility model adopts the technical proposal that:
a membrane filter comprising
The upper part of the filter tank is provided with a water inlet and a backwashing liquid outlet; the position of the water inlet is positioned above the backwashing liquid outlet;
a membrane module mounted within the filtration tank;
the backwashing mechanism is arranged at the bottom in the filter tank and has a certain distance with the lower surface of the membrane component;
and quartz sand filled in the filter tank and submerging the membrane module and the backwashing mechanism.
In one embodiment of the present application, the filter canister comprises
A lower tank body with an open top;
the tank cover is arranged at the top of the lower tank body;
wherein the water inlet and the backwashing liquid outlet are positioned at the upper part of the lower tank body; the membrane module is arranged in the lower tank body below the water inlet; the quartz sand is filled in the lower tank body.
In one embodiment of the present application, the quartz sand has a particle size of 4 to 400 mesh.
In one embodiment of the application, the distance between the quartz sand surface of the quartz sand and the top surface of the membrane module is 40-60 cm, and the distance between the quartz sand surface of the quartz sand and the lowest position of the backwashing liquid discharge port is 20-30 cm.
In one embodiment of the application, quartz sand surface of the quartz sand and the top surface of the membrane module are mixed and filled with 4-80 meshes of quartz sand and 200-400 meshes of quartz sand;
gaps inside the membrane module are filled with 80-200-mesh quartz sand;
and 4-80-mesh quartz sand is filled between the lower surface of the membrane component and the bottom surface of the filter tank.
In one embodiment of the present application, further comprising
And the water distribution plate is horizontally arranged between the water inlet and the backwashing liquid outlet.
In one embodiment of the application, the distance between the lower surface of the membrane component and the bottom surface of the filter tank is 10-30 cm.
In one embodiment of the present application, the membrane module comprises
The membrane frame is connected with the inner wall of the filter tank;
the upper hollow connectors are mounted at the top of the membrane frame;
the hollow lower joints correspond to the hollow upper joints one by one and are arranged at the bottom of the membrane frame;
the ceramic flat membrane is positioned in the membrane frame, and the upper end and the lower end of the ceramic flat membrane are respectively connected with the hollow upper connector and the hollow lower connector correspondingly;
the upper communicating pipe is communicated with the hollow upper joint;
the lower communicating pipe is communicated with the hollow lower joint;
the drinking-water pipe, the drinking-water pipe with go up communicating pipe and connect down communicating pipe, the free end extends to outside the filtration jar.
In one embodiment of the present application, the backwash mechanism comprises
The water washing assembly is composed of a plurality of pipelines connected in parallel, and the pipe wall of each pipeline facing the bottom of the filter tank is provided with a through hole;
the gas washing assembly is composed of a plurality of pipelines connected in parallel, and the pipe wall of each pipeline facing the bottom of the filter tank is provided with a through hole;
wherein, the top of the filtering tank is also provided with an exhaust port.
In one embodiment of the present application, the air wash assembly is disposed opposite the water wash assembly and is inserted into a gap between the pipes.
The utility model has the advantages that:
the utility model discloses a solve among the prior art membrane filter membrane surface attached impurity etc. and cause the flux to attenuate fast, the problem that membrane filter equipment's water production ability descends provides a membrane filter. The membrane filter consists of a filter tank, a membrane component, a backwashing mechanism, quartz sand and the like. The quartz sand is filled in the filter tank and submerges the membrane component and the backwashing mechanism. After the wastewater enters the filter tank, the wastewater is firstly contacted with the quartz sand, most particles, colloid and the like in the wastewater are firstly intercepted by the quartz sand, and then some fine particles and colloid components are further intercepted by a membrane and separated on the surface of the permeable membrane. Because the wastewater is pretreated, the membrane flux and the water production capacity are ensured.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a membrane filter in an example.
FIG. 2 is a partial sectional structural schematic view of a membrane filter in an embodiment.
FIG. 3 is a schematic structural diagram of a membrane module in an example.
FIG. 4 is a schematic structural diagram of a backwashing mechanism in the embodiment.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Because the membrane filtration device has extremely high filtration precision, if the concentration of pollutants in water is higher, the membrane flux can be attenuated quickly, and the water production capacity of the membrane filtration device is reduced.
In order to solve the problems that impurities are attached to the surface of a membrane filter in the prior art to cause rapid attenuation of flux and the water production capacity of a membrane filtering device is reduced, the embodiment provides the membrane filter, and the structure of the membrane filter is shown in the attached drawings 1-4. The membrane filter comprises a filter tank 1, a membrane component 2, a backwashing mechanism 3 and quartz sand.
Specifically, the entire filter tank 1 is in a rectangular parallelepiped shape. The filter tank 1 is composed of a lower tank body 11 and a tank cover 12, so that the operations of cleaning the inside of the filter tank 1, installing components and the like can be conveniently carried out.
The lower tank 11 has a depth inside so that the membrane module 2 can be submerged below the surface of the wastewater. The upper part of the side wall of the lower tank 11 is provided with a water inlet 111 and a backwashing liquid outlet 112. The water inlet 111 is positioned above the backwash drain 112 and both are not activated simultaneously. That is, when the membrane filter is used for wastewater treatment, wastewater enters the filtration tank 1 through the water inlet 111, and the rinse drain port 112 is closed. When the membrane filter is backwashed and cleaned, the water inlet 111 is closed, and the backwash water is discharged from the backwash liquid outlet 112.
In order to buffer the wastewater fed from the water inlet 111, reduce the impact of water flow and facilitate the discharge of backwash water, a water distribution plate 13 is installed near the top inside the lower tank 11. The water distribution plate 13 is parallel to the bottom surface of the lower tank 11, is positioned between the water inlet 111 and the backwashing liquid outlet 112, and is contacted with the inner wall of the lower tank 11 at the periphery. The water distribution plate 13 is provided with a circular hole with the diameter of 1.5mm or a slender narrow slit with the width of 0.5-1.5 mm in a run-through manner so as to allow wastewater to pass through, and block large granular substances, and the area of the circular hole or the narrow slit occupies more than 80% of the area of the water distribution plate 13. When wastewater enters the filter tank 1 from the water inlet 111, the wastewater is buffered by the water distribution plate 13 and uniformly distributed.
The tank cover 12 is provided with an exhaust port 121 for exhausting the gas in the canister 1.
The membrane component 2 is arranged in the lower tank body 11, and has a certain distance of about 10-30 cm with the bottom surface of the lower tank body 11. The membrane module 2 comprises a membrane frame 21, a hollow upper joint 22, a hollow lower joint 23, an upper communicating pipe 24, a lower communicating pipe 25, a ceramic flat membrane 26 and a water pumping pipe 27.
The membrane frame 21 is a frame structure formed by welding stainless steel tubes or aluminum tubes to each other. The membrane frame 21 is fixed on the inner wall of the lower tank body 11 by bolts, and the lower surface of the membrane frame is 10-30 cm away from the bottom surface of the lower tank body 11.
A plurality of ceramic flat membranes 26 are arranged in the membrane frame 21 at equal intervals and parallel to the side wall of the lower tank body 11. The main components of the wastewater separation treatment in the ceramic flat membrane 26. The clean water passes through the holes on the ceramic flat membrane 26 and enters the inner area of the ceramic flat membrane 26. Particles, colloids, etc. are trapped outside the ceramic flat sheet membrane 26.
A plurality of hollow upper joints 22 are arranged on the top of the membrane frame 21. The hollow upper joints 22 are arranged in one-to-one correspondence with the ceramic flat membrane 26 and are connected to the upper end of the ceramic flat membrane 26.
And a plurality of hollow lower joints 23 are arranged at the bottom of the membrane frame 21. The hollow lower joints 23 are arranged in one-to-one correspondence with the hollow upper joints 22 and the ceramic flat membrane 26, and are connected to the lower end of the ceramic flat membrane 26.
And the upper communicating pipe 24 is arranged above the hollow upper joints 22 along the direction vertical to the ceramic flat membrane 26 and is communicated with all the hollow upper joints 22.
And the upper communicating pipe 25 is arranged above the hollow lower joint 23 along the direction vertical to the ceramic flat membrane 26 and is communicated with all the hollow lower joints 23.
And the water pumping pipe 27 is connected with the upper communicating pipe 24 and the lower communicating pipe 25, and the free end of the water pumping pipe extends out of the upper tank body 11.
After the membrane module 2 is connected with the clean water pump, the suction force of the clean water pump enables the inside and the outside of the ceramic flat membrane 26 to form a pressure difference. The clean water passes through the ceramic flat membrane 26, enters the interior of the ceramic flat membrane, flows through the hollow upper joint 22, the hollow lower joint 23, the upper communicating pipe 24 and the lower communicating pipe 25, and is finally primarily discharged out of the upper tank body 11 from the water pumping pipe 27.
And the backwashing mechanism 3 is arranged at the bottom of the inner side of the lower tank body 11. The backwashing mechanism 3 includes a water washing unit 31 and a gas washing unit 32.
The water washing assembly 31 is composed of a plurality of parallel pipelines, and the pipe wall of the pipeline facing the bottom of the lower tank 11 is provided with a through hole.
And an air purge assembly 32 disposed opposite to the water purge assembly 31 and inserted into a gap between the pipes of the water purge assembly 31. The air washing assembly 32 is also composed of a plurality of parallel pipes, and the pipe wall of the pipe facing the bottom of the lower tank 11 is provided with a through hole. After the air washing assembly 32 and the water washing assembly 31 are inserted into each other, the pipelines are arranged at intervals to form an alternate water washing water outlet area and an alternate air washing air outlet area.
The water washing assembly 31 is connected to the booster pump, and high-pressure washing water is injected into the lower tank 11 to wash the tank. The gas washing assembly 32 is connected with an air compressor, and injects high-pressure gas into the lower tank body 11 to perform gas washing.
And quartz sand filled in the lower tank 11 submerges the membrane module 2 and the backwashing mechanism 3, namely, uniform quartz sand is filled in gaps in the membrane module 2, such as gaps between the ceramic flat membrane 26, gaps between the membrane module 2 and the inner wall of the lower tank 11, and gaps between the water washing module 31 and the gas washing module 32. After filling, the distance between the quartz sand surface, namely the top surface of the quartz sand layer, and the top surface of the membrane component 2 is 50cm, and the distance between the quartz sand surface and the lowest position of the backwashing liquid outlet 112 is 10 cm.
After the wastewater enters the lower tank body 11, the wastewater is firstly contacted with the quartz sand, most particles, colloid and the like in the wastewater are firstly intercepted by the quartz sand, then the particles and the colloid penetrate to the surface of the ceramic flat membrane 26, some fine particles and colloid components are further intercepted by the ceramic flat membrane 26, and clean water enters the ceramic flat membrane 26 and is pumped out. Because the wastewater is pretreated, the membrane flux and the water production capacity of the ceramic flat membrane 26 are ensured. When backwashing is carried out through the backwashing mechanism 3, the quartz sand is expanded in a filtering layer under the action of compressed air and high-pressure water, and gravel rolls under the action of air flow and scrapes the surface of the ceramic flat membrane 26. The pollution in the sand layer is removed, and simultaneously the surface of the ceramic flat membrane 26 can be recovered, thereby meeting the requirement of the next filtration.
In order to ensure the interception effect of the quartz sand on particles, colloid and the like in the wastewater and simultaneously not influence the filtering operation, the quartz sand is 4-400 meshes. Meanwhile, when filling the quartz sand, the quartz sand surface is filled with the quartz sand of 4-80 meshes and 200-400 meshes in a mixing manner between the quartz sand surface and the top surface of the membrane component 2, so that the interception effect on particles, colloid and the like is ensured, and the water permeation to the membrane component 2 is not influenced. Gaps in the membrane module 2 are filled with 80-200-mesh quartz sand, and retention of particles, colloid and the like is carried out simultaneously, so that wastewater can flow to the surface of the ceramic flat membrane 26 quickly. And 4-80-mesh quartz sand is filled between the lower surface of the membrane component 2 and the bottom surface of the lower tank body 11, and backwash water and backwash gas are dispersed in the space, so that the cleaning effect on the quartz sand and the ceramic flat membrane 26 is improved.
The working principle of the membrane filter in the present embodiment is as follows:
the membrane filter is connected with a waste water pipeline, a clean water pump, a booster pump, an air compressor and the like. The wastewater is added into the lower tank 11 from the water inlet 111 and is firstly contacted with the water distribution plate 13 to distribute water uniformly. The wastewater falls on the surface of the quartz sand and gradually flows to the membrane module 2. Most particles, colloids and the like in the wastewater are firstly intercepted by the quartz sand, then, some fine particles and colloid components are further intercepted by the ceramic flat membrane 26 at the position where the particles, colloids and the like penetrate to the surface of the ceramic flat membrane 26, and clean water enters the ceramic flat membrane 26. The suction force of the clean water pump causes a pressure difference to be formed between the inside and the outside of the ceramic flat membrane 26. The clean water passes through the ceramic flat membrane 26, enters the interior of the ceramic flat membrane, flows through the hollow upper joint 22, the hollow lower joint 23, the upper communicating pipe 24 and the lower communicating pipe 25, and is finally primarily discharged out of the upper tank body 11 from the water pumping pipe 27.
When the membrane filter needs to be backwashed and cleaned, the injection of the waste water is stopped. The water washing assembly 31 is connected with the booster pump and then injects high-pressure washing water into the lower tank 11. The gas washing assembly 32 injects high pressure gas into the lower tank 11 after being connected with the air compressor. The quartz sand expands under the action of compressed air and high-pressure water, and the gravel rolls under the action of air flow and scrapes the surface of the ceramic flat membrane 26. The contamination in the sand layer is removed and the surface of the ceramic flat membrane 26 can be recovered.
The membrane filter in this embodiment intercepts particles, colloids and the like of wastewater China through quartz sand, and then performs membrane filtration, thereby ensuring good water outlet effect.
Claims (10)
1. A membrane filter, comprising
The upper part of the filter tank is provided with a water inlet and a backwashing liquid outlet; the position of the water inlet is positioned above the backwashing liquid outlet;
a membrane module mounted within the filtration tank;
the backwashing mechanism is arranged at the bottom in the filter tank and has a certain distance with the lower surface of the membrane component;
and quartz sand filled in the filter tank and submerging the membrane module and the backwashing mechanism.
2. The membrane filter of claim 1, wherein the filter canister comprises
A lower tank body with an open top;
the tank cover is arranged at the top of the lower tank body;
wherein the water inlet and the backwashing liquid outlet are positioned at the upper part of the lower tank body; the membrane module is arranged in the lower tank body below the water inlet; the quartz sand is filled in the lower tank body.
3. The membrane filter according to claim 1, wherein the quartz sand has a particle size of 4 to 400 mesh.
4. The membrane filter according to claim 1, wherein the distance between the quartz sand surface of the quartz sand and the top surface of the membrane module is 40-60 cm, and the distance between the quartz sand surface of the quartz sand and the lowest position of the backwashing liquid discharge port is 20-30 cm.
5. The membrane filter according to claim 1, wherein quartz sand of 4-80 meshes and 200-400 meshes are mixed and filled between the quartz sand surface of the quartz sand and the top surface of the membrane component;
gaps inside the membrane module are filled with 80-200-mesh quartz sand;
and 4-80-mesh quartz sand is filled between the lower surface of the membrane component and the bottom surface of the filter tank.
6. The membrane filter of claim 1, further comprising
And the water distribution plate is horizontally arranged between the water inlet and the backwashing liquid outlet.
7. The membrane filter according to claim 1, wherein the distance between the lower surface of the membrane module and the bottom surface of the filter tank is 10-30 cm.
8. The membrane filter of claim 1, wherein the membrane module comprises
The membrane frame is connected with the inner wall of the filter tank;
the upper hollow connectors are mounted at the top of the membrane frame;
the hollow lower joints correspond to the hollow upper joints one by one and are arranged at the bottom of the membrane frame;
the ceramic flat membrane is positioned in the membrane frame, and the upper end and the lower end of the ceramic flat membrane are respectively connected with the hollow upper connector and the hollow lower connector correspondingly;
the upper communicating pipe is communicated with the hollow upper joint;
the lower communicating pipe is communicated with the hollow lower joint;
the drinking-water pipe, the drinking-water pipe with go up communicating pipe and connect down communicating pipe, the free end extends to outside the filtration jar.
9. The membrane filter of claim 1, wherein the backwashing mechanism includes
The water washing assembly is composed of a plurality of pipelines connected in parallel, and the pipe wall of each pipeline facing the bottom of the filter tank is provided with a through hole;
the gas washing assembly is composed of a plurality of pipelines connected in parallel, and the pipe wall of each pipeline facing the bottom of the filter tank is provided with a through hole;
wherein, the top of the filtering tank is also provided with an exhaust port.
10. The membrane filter of claim 9, wherein the gas wash module is disposed opposite the water wash module and is inserted into the gap between the tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022943080.8U CN213995465U (en) | 2020-12-11 | 2020-12-11 | Membrane filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022943080.8U CN213995465U (en) | 2020-12-11 | 2020-12-11 | Membrane filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213995465U true CN213995465U (en) | 2021-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022943080.8U Active CN213995465U (en) | 2020-12-11 | 2020-12-11 | Membrane filter |
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| CN (1) | CN213995465U (en) |
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- 2020-12-11 CN CN202022943080.8U patent/CN213995465U/en active Active
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