CN210993795U - Ultrafiltration membrane self-cleaning device - Google Patents
Ultrafiltration membrane self-cleaning device Download PDFInfo
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- CN210993795U CN210993795U CN201921581486.7U CN201921581486U CN210993795U CN 210993795 U CN210993795 U CN 210993795U CN 201921581486 U CN201921581486 U CN 201921581486U CN 210993795 U CN210993795 U CN 210993795U
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- siphon
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- ultrafiltration membrane
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- backwashing
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Abstract
The utility model discloses an ultrafiltration membrane self-cleaning device, which comprises a water inlet system, an ultrafiltration membrane system, a backwashing system and a hydraulic automatic control system; the ultrafiltration membrane system comprises an ultrafiltration membrane component, a water production pipe and a backwashing water discharge pipe, and a water inlet of the ultrafiltration membrane component is connected to the water inlet system; the backwashing system comprises a backwashing water tank and a siphon breaking hopper arranged in the backwashing water tank, an overflow port is arranged at the upper part of the backwashing water tank, a siphon pipe is arranged between the siphon breaking hopper and the backwashing water tank, and the other end of the water production pipe is connected to the backwashing water tank; the hydraulic automatic control system comprises a siphon outer sleeve, a siphon inner sleeve, a siphon auxiliary pipe and a siphon breaking pipe. The utility model provides an milipore filter is from belt cleaning device can effectively wash the membrane silk, reduces the use of valve, pump, reduces the energy consumption, lowers the running cost.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment, in particular to milipore filter is from belt cleaning device.
Background
Ultrafiltration is a membrane separation technique for purifying and separating a solution, wherein the ultrafiltration membrane only allows water, inorganic salts and small molecular organic matters in the solution to permeate through under the driving of pressure difference, and retains suspended substances, colloids, proteins, microorganisms and other macromolecular substances in the solution on the outer surface, thereby achieving the purposes of purification and separation. With the extension of the operation time, the pollution problem of the membrane must occur, so a certain method is needed to remove the pollutants on the surface of the membrane or in the pores of the membrane, and the purposes of recovering the water yield and prolonging the service life of the membrane are achieved. The cleaning method for membrane fouling includes a physical cleaning method and a chemical cleaning method. The most common physical cleaning method is hydraulic flushing method, and the chemical cleaning method is a method of adding medicines for auxiliary cleaning, including adding bactericides and the like. Usually, the system is provided with a reasonable cleaning method, the physical method is used for washing, and the chemical cleaning method is used only when the physical method cannot achieve the ideal effect.
The most common of the physical cleaning methods is the hydraulic flushing method, which includes back flushing and forward flushing, and the cleaning media are water and gas. The hydraulic flush is typically a short backwash of the membrane with ultrafiltration product water. Practice proves that the backwashing method can flush the micropores blocked by the particles on the membrane surface, can effectively destroy the structure of the gel layer, and is more effective for recovering the water permeability of the membrane than the isobaric flushing method.
Generally, backwashing water is conveyed into an ultrafiltration membrane component by a backwashing valve and a backwashing pump to backwash the membrane during ultrafiltration backwashing, the backwashing pump needs to be connected with P L C to realize automatic control, certain investment cost is increased, energy consumption is high in the running process of the backwashing pump, system running cost is increased, if the pump is out of order or damaged in the running process, normal running of the system is influenced, and maintenance or repurchase is needed, so that extra economic loss is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an milipore filter is from belt cleaning device can effectively wash the membrane silk, reduces the running cost.
Based on the above problem, the utility model provides a technical scheme is:
an ultrafiltration membrane self-cleaning device comprises a water inlet system, an ultrafiltration membrane system, a backwashing system and a hydraulic automatic control system;
the ultrafiltration membrane system comprises an ultrafiltration membrane component, a water production pipe with one end connected to a water production port of the ultrafiltration membrane component, and a backwashing water discharge pipe with one end connected to a concentrated water discharge port of the ultrafiltration membrane component, wherein a water inlet of the ultrafiltration membrane component is connected to the water inlet system;
the backwashing system comprises a backwashing water tank and a siphon damage hopper arranged in the backwashing water tank, an overflow port is arranged at the upper part of the backwashing water tank, a siphon is arranged between the siphon damage hopper and the backwashing water tank, and the other end of the water production pipe is connected to the backwashing water tank;
the hydraulic automatic control system comprises a siphon external casing, a siphon internal casing, a siphon auxiliary pipe, a siphon destroying pipe and a drainage water sealing well, the two ends of the siphon external sleeve are sealed, the upper end of the siphon internal sleeve extends into the siphon external sleeve and has a distance with the top of the siphon external sleeve, the lower end of the siphon inner sleeve extends to the drainage water sealing well, an annular space is formed between the siphon inner sleeve and the siphon outer sleeve, the other end of the backwashing water discharge pipe is connected to the annular space, the siphon auxiliary pipe is arranged in the siphon inner sleeve, the siphon auxiliary pipe comprises a drainage pipe section which is communicated with the annular space and the drainage water seal well, and an exhaust pipe section which is communicated with the drainage pipe section and extends to the upper part of the siphon inner sleeve, siphon destroys pipe one end and extends to siphon inside sleeve pipe top and the other end extends to in the siphon destroys the fill.
In some of the embodiments, the upper end plate and the lower end plate of the backwash water tank are respectively provided with an upper limiting hole and a lower limiting hole, the siphon outer sleeve is fixed in the upper limiting hole and the lower limiting hole, the outer wall of the siphon outer sleeve is in sealing fit with the backwash water tank, the upper end of the siphon outer sleeve extends to the upper part of the backwash water tank, and the lower end of the siphon outer sleeve is arranged between the backwash water tank and the ultrafiltration membrane component.
In some embodiments, the siphon tube is U-shaped, with one end extending into the siphon break bucket and the other end extending into the backwash tank, and the end located within the backwash tank is below the end located within the siphon break bucket.
In some of these embodiments, the end of the siphon break pipe that extends into the siphon break hopper is above the end of the siphon pipe that is located within the siphon break hopper.
In some embodiments, the siphon break pipe main body is fixed on the inner wall of the siphon outer sleeve, the upper end of the siphon break pipe is bent and extends to the upper part of the siphon inner sleeve, the lower part of the siphon break pipe penetrates through the outer wall of the siphon outer sleeve and extends into the siphon break small bucket, and the siphon break pipe is connected with the wall of the siphon outer sleeve in a sealing manner.
In some embodiments, the upper end of the drain pipe section is fixed to the wall of the siphon inner casing and is communicated with the annular space, and the lower end of the drain pipe section is fixed to the wall of the siphon inner casing.
In some embodiments, the upper port of the drain pipe section is located 0.1-0.15 m below the top of the siphon inner sleeve.
In some of these embodiments, the vent section extends from the upper outer wall of the drain section up to below the top of the siphon outer sleeve.
In some embodiments, the top of the siphon inner sleeve is located 0.05-0.10 m below the top of the siphon outer sleeve.
In some embodiments, the drainage water seal well is located 1.0m to 1.2m below the surface of the earth.
Compared with the prior art, the utility model has the advantages that:
1. by adopting the technical scheme of the utility model, the membrane component is backwashed by utilizing the produced water in the water production tank under the siphon action, the membrane wires can be effectively cleaned, the membrane wires are recovered to the flux of normal operation, the use of valves and pumps in the backwashing process can be reduced, the installation is convenient, the investment cost is low, the operation cost can be reduced, and a large amount of energy consumption in the backwashing process is avoided;
2. adopt the technical scheme of the utility model, the normal operating of system is maintained, avoids backwash pump, valve etc. to break down or damage and influence the normal operating of system in the operation process, also reduces the system maintenance cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, the drawings in the following description are only 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 of an embodiment of an ultrafiltration membrane self-cleaning apparatus according to the present invention;
wherein:
1. a water inlet pipe; 2. a water inlet pump; 3. an ultrafiltration membrane module; 4. a water production pipe; 5. backwashing the drain pipe; 6. a backwash water tank; 6-1, an overflow port; 7. a siphon breaking bucket; 8. a siphon tube; 9. a siphon break pipe; 10. a siphon outer sleeve; 11. a siphon inner sleeve; 12. a siphon auxiliary pipe; 12-1, a drainage pipe section; 12-2, an exhaust pipe section; 13. and (5) draining water and sealing the well.
Detailed Description
The above-described scheme is further illustrated below with reference to specific examples. It should be understood that these examples are for illustrative purposes and are not intended to limit the scope of the present invention. The conditions used in the examples may be further adjusted according to the conditions of the particular manufacturer, and the conditions not specified are generally the conditions in routine experiments.
Referring to fig. 1, for the structural schematic diagram of the present invention, a self-cleaning device for ultrafiltration membrane is provided, which comprises a water inlet system, an ultrafiltration membrane system, a backwashing system, and a hydraulic automatic control system.
The ultrafiltration membrane system comprises an ultrafiltration membrane component 3, a water production pipe 4 with one end connected to a water production port of the ultrafiltration membrane component 3, and a backwashing drain pipe 5 with one end connected to a concentrated water discharge port of the ultrafiltration membrane component 3, a water inlet of the ultrafiltration membrane component 3 is connected to a water inlet system, the ultrafiltration membrane is an external pressure membrane, and the water inlet system comprises a water inlet pipe 1 and a water inlet pump 2 arranged on the water inlet pipe 1.
The backwashing system comprises a backwashing water tank 6 and a siphon breaking hopper 7 arranged in the backwashing water tank 6, the backwashing water tank 6 is arranged above the ultrafiltration membrane component 3 and can be supported by a steel structure, an overflow port 6-1 is arranged at the upper part of the backwashing water tank 6, the overflow port 6-1 is connected to a clean water tank through an overflow pipe, a siphon 8 is arranged between the siphon breaking hopper 7 and the backwashing water tank 6, and the other end of the water production pipe 4 is connected to the bottom of the backwashing water tank 6. The siphon 8 is U-shaped, and 8 one end of siphon extend to in the siphon destroys fill 7 and the other end extends to in the backwash water tank 6, and the one end that is located in the backwash water tank 6 is located the below of 7 interior one end of siphon destroy fill.
The hydraulic automatic control system comprises a siphon outer sleeve 10, a siphon inner sleeve 11, a siphon auxiliary pipe 12, a siphon break pipe 9 and a drainage water seal well 13, wherein two ends of the siphon outer sleeve 10 are sealed, the upper end of the siphon inner sleeve 11 extends into the siphon outer sleeve 12 and is spaced from the top of the siphon outer sleeve 12, preferably, the top of the siphon inner sleeve 11 is located at a position 0.05-0.10 m below the top of the siphon outer sleeve 10, the lower end of the siphon inner sleeve 11 penetrates through the lower end of the siphon outer sleeve 10 and extends to the drainage water seal well 13, an annular space is formed between the siphon inner sleeve 11 and the siphon outer sleeve 10, the other end of a backwashing drainage pipe 5 is connected to the annular space, the siphon auxiliary pipe 12 is arranged in the siphon inner sleeve 11, the siphon auxiliary pipe 12 comprises a drainage pipe section 12-1 for communicating the annular space and the drainage water seal well 13 and an exhaust siphon section 12-2 for communicating the drainage pipe section 12-1 and extending to the upper part of the siphon outer sleeve 11, the siphon break pipe 9 has one end extending above the siphon inner pipe 11 and the other end extending into the siphon break bucket 7.
In this example, the upper end plate and the lower end plate of the backwash water tank 6 are respectively provided with an upper limit hole and a lower limit hole, the siphon external sleeve 10 is fixed in the upper limit hole and the lower limit hole in a penetrating manner, the outer wall of the siphon external sleeve is in sealing fit with the backwash water tank 6, the upper end of the siphon external sleeve 10 extends to the upper part of the backwash water tank 6, and the lower end of the siphon external sleeve 10 is arranged between the backwash water tank 6 and the ultrafiltration membrane component 3.
In this example, the end of the siphon break pipe 9 extending into the siphon break tank 7 is positioned above the end of the siphon pipe 8 in the siphon break tank 7, and when the liquid level in the siphon break tank 7 drops below the lower end of the siphon break pipe 9, the siphon break pipe 9 receives air and breaks the vacuum atmosphere in the siphon outer jacket 10.
Siphon destroys 9 main part and fixes on siphon outside sleeve pipe 10 inner wall, in the implementation, and the plastics material can adopt hot melt bonding's mode to fix, and cast iron and stainless steel can adopt welded fastening, and siphon destroys and extends to siphon inside sleeve pipe 11 top after 9 upper ends are buckled, and siphon destroys 9 lower parts and extends to siphon after passing siphon outside sleeve pipe 10 outer wall and destroys in fighting 7, and siphon destroys pipe 9 and siphon outside sleeve pipe 10 pipe wall sealing connection.
In this embodiment, the upper end of the drainage pipe section 12-1 is fixed on the pipe wall of the siphon inner pipe 11 and is communicated with the annular space, and the lower part of the drainage pipe section 12-1 is fixed on the pipe wall of the siphon inner pipe 11. The upper port of the drainage pipe section 12-1 is located at a position of 0.1-0.15 m below the top of the siphon inner sleeve 11. The exhaust pipe section 12-2 extends upwards from the outer wall of the upper part of the drain pipe section 12-1 to the position below the top of the siphon outer sleeve 10.
Wherein the drainage water seal well 13 is positioned 1.0 m-1.2 m below the ground surface, the soil layer above the drainage water seal well 13 can play a role in fixing the lower part of the siphon inner casing pipe 11, and in addition, the drainage water seal well 13 is arranged underground to prevent freezing in winter.
The utility model discloses a working process does: raw water firstly enters a water inlet pipe 1 through a water inlet pump 2, and then enters an ultrafiltration membrane component 3 through a water inlet at the lower end of the ultrafiltration membrane component 3, wherein the ultrafiltration membrane component 3 is an external pressure membrane; under the action of an external pressure membrane, the formed produced water enters a backwashing water tank 6 through a water production pipe 4, and the concentrated water enters an annular space between a siphon external sleeve 10 and a siphon internal sleeve 11 through a backwashing water discharge pipe 5. The water level of the concentrated water in the annular space continuously rises along with the proceeding of membrane filtration, when the water level rises to the upper pipe orifice of the drainage pipe section 12-1, the concentrated water enters the drainage pipe section 12-1 through the pipe orifice and then flows down to enter the drainage water seal well 13, the air in the siphon sleeve is continuously pumped out by the exhaust pipe section 12-2 under the action of vacuum and water flow air entrainment formed by descending water flow in the pipe, so that the vacuum degree in the siphon sleeve is gradually increased, at the moment, the water in the drainage water seal well 13 is sucked to a certain height by the lower part of the drainage pipe section 12-1 along with the continuous rising of the water level in the annular space, when the concentrated water in the annular space falls off over the top of the siphon sleeve 11, the vacuum degree in the pipe is sharply increased, when the falling water flow and the ascending water flow in the drainage pipe section 12-1 are converged into a strand to take away all the residual air in the pipe, continuous siphoning is formed, and the gravity action of the backwash water tank 6 finally causes the water in the backwash water tank 6 to enter the external pressure membrane in the opposite direction to the membrane filtration, so that backwashing is started. In the backwashing process, water inlet is not stopped, the membrane surface is cleaned in a forward washing mode under the action of siphon, backwashing water in the backwashing water tank 6 is used for backwashing the membrane from the inside of the membrane, and then the backwashing water and the inflow water outside the membrane are discharged into an annular space in the hydraulic automatic control system together, along with the continuous backwashing, the water level in the backwashing water tank 6 is lower and lower, when the water level of the backwashing water tank 6 is lowered to the siphon damage hopper 7, the siphon damage pipe 9 is used for air inlet, the siphon damage is realized, so that the backwashing is stopped, and the next circulating membrane filtration process is carried out.
The above examples are only for illustrating the technical conception and the features of the present invention, and the purpose thereof is to enable one skilled in the art to understand the contents of the present invention and to implement the present invention, which should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (10)
1. An ultrafiltration membrane self-cleaning device is characterized in that: comprises a water inlet system, an ultrafiltration membrane system, a backwashing system and a hydraulic automatic control system;
the ultrafiltration membrane system comprises an ultrafiltration membrane component (3), a water production pipe (4) with one end connected to a water production port of the ultrafiltration membrane component (3), and a backwashing drain pipe (5) with one end connected to a concentrated water discharge port of the ultrafiltration membrane component (3), wherein a water inlet of the ultrafiltration membrane component (3) is connected to the water inlet system;
the backwashing system comprises a backwashing water tank (6) and a siphon damage hopper (7) arranged in the backwashing water tank (6), an overflow port (6-1) is formed in the upper part of the backwashing water tank (6), a siphon (8) is arranged between the siphon damage hopper (7) and the backwashing water tank (6), and the other end of the water production pipe (4) is connected to the backwashing water tank (6);
the hydraulic automatic control system comprises a siphon external sleeve (10), a siphon internal sleeve (11), a siphon auxiliary pipe (12), a siphon breaking pipe (9) and a drainage water sealing well (13), wherein two ends of the siphon external sleeve (10) are sealed, the upper end of the siphon internal sleeve (11) extends into the siphon external sleeve (10) and is spaced from the top of the siphon external sleeve (10), the lower end of the siphon internal sleeve (11) extends into the drainage water sealing well (13), an annular space is formed between the siphon internal sleeve (11) and the siphon external sleeve (10), the other end of a backwashing drainage pipe (5) is connected to the annular space, the siphon auxiliary pipe (12) is arranged in the siphon internal sleeve (11), and the siphon auxiliary pipe (12) comprises a drainage pipe section (12-1) which communicates the annular space with the drainage water sealing well (13), And an exhaust pipe section (12-2) communicated to the drain pipe section (12-1) and extending to the upper part of the siphon inner sleeve (11), wherein one end of the siphon break pipe (9) extends to the upper part of the siphon inner sleeve (11) and the other end extends into the siphon break hopper (7).
2. The ultrafiltration membrane self-cleaning apparatus of claim 1, wherein: be equipped with spacing hole, spacing hole down on the upper end plate of backwash water tank (6), the lower end plate respectively, siphon outside sleeve pipe (10) are fixed spacing hole, spacing downthehole down go up, and the outer wall with backwash water tank (6) are sealed to be cooperated, siphon outside sleeve pipe (10) upper end extends to the top of backwash water tank (6), siphon outside sleeve pipe (10) lower extreme sets up backwash water tank (6) with between milipore filter subassembly (3).
3. The ultrafiltration membrane self-cleaning apparatus of claim 1, wherein: siphon (8) are the U type, siphon (8) one end extend to in siphon destroys fill (7) and the other end extend to in backwash water tank (6), and be located one end in backwash water tank (6) is located siphon destroys the below of fighting (7) interior one end.
4. The ultrafiltration membrane self-cleaning apparatus of claim 3, wherein: the siphon breaking pipe (9) extends into one end of the siphon breaking hopper (7) and is positioned above one end of the siphon (8) in the siphon breaking hopper (7).
5. The ultrafiltration membrane self-cleaning apparatus of claim 1, wherein: siphon destroys pipe (9) main part and fixes on siphon outside sleeve pipe (10) inner wall, siphon destroys and extends after pipe (9) upper end is buckled inside sleeve pipe (11) top of siphon, siphon destroys pipe (9) lower part and passes extend behind siphon outside sleeve pipe (10) outer wall in the siphon destroys fill (7), siphon destroys pipe (9) with siphon outside sleeve pipe (10) pipe wall sealing connection.
6. The ultrafiltration membrane self-cleaning apparatus of claim 1, wherein: the upper end of the drainage pipe section (12-1) is fixed on the pipe wall of the siphon inner sleeve (11) and communicated to the annular space, and the lower part of the drainage pipe section (12-1) is fixed on the pipe wall of the siphon inner sleeve (11).
7. The ultrafiltration membrane self-cleaning apparatus of claim 6, wherein: the upper port of the drainage pipe section (12-1) is located at a position of 0.1-0.15 m below the top of the siphon inner sleeve (11).
8. The ultrafiltration membrane self-cleaning apparatus of claim 1, wherein: the exhaust pipe section (12-2) extends upwards from the outer wall of the upper part of the drainage pipe section (12-1) to the position below the top of the siphon outer sleeve (10).
9. The ultrafiltration membrane self-cleaning apparatus of claim 1, wherein: the top of the siphon inner sleeve (11) is located at a position of 0.05-0.10 m below the top of the siphon outer sleeve (10).
10. The ultrafiltration membrane self-cleaning apparatus of claim 1, wherein: the drainage water seal well (13) is positioned at a position 1.0-1.2 m below the ground surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921581486.7U CN210993795U (en) | 2019-09-23 | 2019-09-23 | Ultrafiltration membrane self-cleaning device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921581486.7U CN210993795U (en) | 2019-09-23 | 2019-09-23 | Ultrafiltration membrane self-cleaning device |
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| CN210993795U true CN210993795U (en) | 2020-07-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110559864A (en) * | 2019-09-23 | 2019-12-13 | 苏州苏科环保科技有限公司 | ultrafiltration membrane self-cleaning device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110559864A (en) * | 2019-09-23 | 2019-12-13 | 苏州苏科环保科技有限公司 | ultrafiltration membrane self-cleaning device |
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