CN106986420B - Metal film terminal-cross flow filtration double-purpose cup device - Google Patents
Metal film terminal-cross flow filtration double-purpose cup device Download PDFInfo
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- CN106986420B CN106986420B CN201710116276.XA CN201710116276A CN106986420B CN 106986420 B CN106986420 B CN 106986420B CN 201710116276 A CN201710116276 A CN 201710116276A CN 106986420 B CN106986420 B CN 106986420B
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- metal membrane
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/02—Inorganic material
- B01D71/022—Metals
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/02—Fluid flow conditions
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2307/00—Location of water treatment or water treatment device
- C02F2307/04—Location of water treatment or water treatment device as part of a pitcher or jug
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to a metal film terminal-cross flow filtration dual-purpose cup device which comprises a hollow shell (1) and a metal film assembly, wherein the metal film assembly is transversely arranged in the shell (1) and divides the shell (1) into an upper cavity (7) and a lower cavity (8), the upper cavity (7) is provided with a water inlet (12) and an air inlet (13), the side part above the metal film is provided with a first water outlet (10), and the lower cavity (8) is provided with a second water outlet (11). Compared with the prior art, the invention has the advantages of simple structural design, quick and convenient diaphragm installation, more uniform water distribution and collection, and capability of realizing the comparative analysis of the filtered water quality and the membrane pollution condition of the metal membrane in different filtering modes.
Description
Technical Field
The invention relates to the field of water treatment equipment, in particular to a metal membrane terminal-cross flow filtration dual-purpose cup device.
Background
Water is a life source of living things on the earth and is an indispensable substance for forming living things and metabolism, and the quality of water quality determines the health and safety of human beings to a great extent, so that excellent water quality is a basic requirement for life health.
With the rapid development of the world economy, the shortage of water resources and the water environment pollution become hot problems concerned by China and even the world nowadays. United nations surveys indicate that water shortage has affected continents: one fifth of the world's population, living in areas of water shortage; by 2025, 18 hundred million people face the dilemma of absolute scarcity of water resources, and at the same time, a large amount of water resources are wasted and polluted because of the fact that the water resources are not continuously utilized. Surface water contains a large amount of particulate matters, pathogenic microorganisms and possible precursors of carcinogenic, teratogenic and mutagenic disinfection by-products (DBPs), and the utilization of limited water resources by people is restricted. In the past decades, membrane separation technology has received great attention as a green technology capable of providing high quality water as well as a large amount of regenerated water.
The membrane filtration process is a pressure driving process, and the purpose of separating and concentrating stock solution is realized under certain pressure by taking the pressure difference on two sides of the membrane as driving force and the membrane as a filter medium. In addition to its numerous applications in industrial production, membrane processes have become an additional or alternative process to conventional water treatment processes. With the development of membrane technology, inorganic membranes such as ceramic membranes and metal membranes are produced on the basis of organic membranes, and good effects on improving water quality are achieved.
In recent years, metal films have been increasingly regarded as a new technology in the field of water treatment. Compared with organic membranes, the metal membrane has the advantages of better chemical stability, high temperature resistance, high pressure resistance, acid and alkali resistance, long service life, easiness in maintenance and cleaning and the like, so that the metal membrane can operate under higher pressure, and the filtration flux is several times or even dozens of times of that of other membranes. However, the water quality conditions in different places are different, and the water quality indexes of the metal membrane after filtration are different under different filtration modes (dead end and cross flow). Therefore, how to conveniently and rapidly detect the filtered water quality and the membrane pollution condition of the metal membrane in different filtering modes is a basic content for ensuring the reliable and stable operation of the membrane in production and life, and is also an important basis for further application of the metal membrane in the field of water treatment. The present invention was devised in response to this problem.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a metal membrane end-cross flow filtration dual-purpose cup device.
The purpose of the invention can be realized by the following technical scheme:
a metal membrane terminal-cross flow filtration dual-purpose cup device comprises a hollow shell and a metal membrane assembly, wherein the metal membrane assembly is transversely arranged in the shell and divides the shell into an upper cavity and a lower cavity, a water inlet and an air inlet are formed in the upper cavity, a first water outlet is formed in the side part above the metal membrane, and a second water outlet is formed in the lower cavity.
Preferably, the water inlet, the air inlet, the first water outlet and the second water outlet are all provided with valves.
Preferably, a flow guide table is further arranged at the center of the bottom of the lower cavity, a flow guide groove is formed between the flow guide table and the inner wall of the lower cavity, and the second water outlet is connected with the flow guide groove.
More preferably, the top surface of the flow guide table is of a conical surface structure;
the diversion trench adopts a slope design, and the second water outlet is arranged at the lowest point of the diversion trench. Even more preferably, the slope of the flow channels is symmetrically designed.
Preferably, the upper cavity and the lower cavity are fixedly connected by adopting a bolt structure, and the metal membrane assembly is hermetically arranged between the upper cavity and the lower cavity.
Preferably, the metal membrane assembly comprises a metal membrane, a hoop and two rubber gaskets, wherein the metal membrane is arranged in the hoop, and the two rubber gaskets are respectively arranged at the edge positions of the upper surface and the lower surface of the metal membrane.
More preferably, the diameter of the metal diaphragm is between the inner diameter and the outer diameter of the upper cavity and the lower cavity;
the inner diameter of the rubber gasket is smaller than the diameter of the metal diaphragm, and the outer diameter of the rubber gasket is larger than the diameter of the metal diaphragm.
Preferably, the water inlet and the first water outlet are arranged in a vertically offset manner.
Preferably, the shell is made of tempered glass.
Compared with the prior art, the invention has the following advantages:
(1) the dual-purpose cup device can well realize two processes of terminal filtration and cross flow filtration of the metal membrane.
(2) The dual-purpose cup device shell has high pressure resistance, the cavity can well bear the operation pressure intensity required by the metal film, the device has simple structure and convenient assembly and disassembly, and the metal film required to be used can be quickly replaced.
(3) The dual-purpose cup device is provided with the diversion table and the diversion trench with certain gradients in the lower cavity, so that even water distribution is ensured, membrane penetrating fluid can more quickly and uniformly enter the water outlet through the flow trench, and membrane flux measurement errors are reduced.
(4) The dual-purpose cup device can flexibly adjust the metal membrane filtration mode, and is convenient for researching the comparative analysis of various parameters of water quality and membrane pollution conditions after the metal membrane is filtered in different filtration modes.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic sectional view taken along line A-A of the apparatus;
FIG. 3 is a schematic cross-sectional view B-B of the apparatus;
in the figure, 1-shell, 2-bolt, 3-nut, 4-rubber washer, 5-metal diaphragm, 6-thread mouth, 7-upper cavity, 8-lower cavity, 9-hoop, 10-first water outlet, 11-second water outlet, 12-water inlet, 13-air inlet, 14-diversion groove, and 15-diversion table.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Examples
A metal membrane terminal-cross flow filtration dual-purpose cup device is structurally shown in figure 1 and comprises a shell 1 and a metal membrane assembly, wherein the shell 1 is hollow inside, the metal membrane assembly is transversely arranged in the shell 1 and divides the shell 1 into an upper cavity 7 and a lower cavity 8, the upper cavity 7 is provided with a water inlet 12 and a gas inlet 13, a first water outlet 10 is arranged on the side part slightly higher than the metal membrane, the top of the upper cavity 7 is also provided with a pressure gauge, the lower cavity 8 is provided with a second water outlet 11, valves are arranged at the positions of the water inlet 12, the gas inlet 13, the first water outlet 10 and the second water outlet 11, a flow guide table 15 is further arranged at the central position of the bottom of the lower cavity 8, a flow guide groove 14 is formed between the flow guide table 15 and the inner wall of the lower cavity 8, the second water outlet 11 is connected with the flow guide; the diversion trench 14 is designed by adopting a slope, the second water outlet 11 is arranged at the lowest point of the diversion trench 14, and the slope of the diversion trench 14 is designed symmetrically, as shown in fig. 3.
The upper cavity 7 and the lower cavity 8 are fixedly connected by adopting a bolt structure, that is, a threaded opening 6 is arranged at the joint of the upper cavity 7 and the lower cavity 8, and then the upper cavity and the lower cavity are fixedly connected by a matched bolt 2 and a matched nut 3, as shown in fig. 2. The metal membrane component is hermetically arranged between the upper cavity 7 and the lower cavity 8 and comprises a metal membrane 5, a hoop 9 and two rubber gaskets 4, wherein the metal membrane 5 is arranged in the hoop 9, and the two rubber gaskets 4 are respectively arranged at the edge positions of the upper surface and the lower surface of the metal membrane 5. The diameter of the metal diaphragm 5 is between the inner diameter and the outer diameter of the upper cavity body 8 and the lower cavity body 8; the inner diameter of the rubber gasket 4 is slightly smaller than the diameter of the metal diaphragm 5, and the outer diameter is slightly larger than the diameter of the metal diaphragm 5. The water inlet 12 and the first water outlet 10 are installed to be offset in the vertical direction. The shell 1 is made of toughened glass.
The device can realize two filtering modes, namely terminal filtering and cross-flow filtering, wherein the operation of the terminal filtering is as follows: the device is installed fixedly according to above-mentioned structure, from the water inlet 12 water inflow, closes water inlet 12 and first delivery port 10 after water is full of, opens air inlet 13 and makes gas pressure advance cavity 7, can form 5 dead ends filtration processes of metal diaphragm, takes a sample from second delivery port 11 at last and carries out research and analysis.
Cross-flow filtration: after the device is installed and fixed according to the structure, the air inlet 13 is closed, the first water outlet 10 is opened, then water is fed from the water inlet 12 under pressure by using a pump, the valve on the first water outlet 10 is adjusted, the shearing flow speed of the surface of the metal membrane 5 is changed, the pollution condition of the surface of the membrane is adjusted, the cross-flow filtration process of the metal membrane 5 can be formed, and finally, a water sample is taken from the second water outlet 11 for analysis and research.
The metal membrane terminal cross-flow filtration dual-purpose cup device is applied to experiments, so that the water quality condition of water filtered by a metal membrane in two filtration modes of dead ends and cross flow can be obtained, and the research on the performance and pollution condition of the metal membrane and the selection of the filtration mode are facilitated.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (3)
1. A metal membrane terminal-cross flow filtration dual-purpose cup device is characterized by comprising a hollow shell (1) and a metal membrane assembly, wherein the metal membrane assembly is transversely arranged in the shell (1) and divides the shell (1) into an upper cavity (7) and a lower cavity (8), the upper cavity (7) is provided with a water inlet (12) and an air inlet (13), the side part above the metal membrane is provided with a first water outlet (10), and the lower cavity (8) is provided with a second water outlet (11);
valves are arranged at the water inlet (12), the air inlet (13), the first water outlet (10) and the second water outlet (11);
a flow guide table is further arranged at the center of the bottom of the lower cavity (8), a flow guide groove is formed between the flow guide table and the inner wall of the lower cavity (8), and the second water outlet (11) is connected with the flow guide groove;
the top surface of the flow guide table is of a conical surface structure;
the diversion trench is designed by adopting a slope, and the second water outlet (11) is arranged at the lowest point of the diversion trench;
the upper cavity (7) and the lower cavity (8) are fixedly connected by adopting a bolt structure, and the metal membrane component is hermetically arranged between the upper cavity (7) and the lower cavity (8);
the metal membrane component comprises a metal membrane (5), a hoop (9) and two rubber gaskets (4), wherein the metal membrane (5) is arranged in the hoop (9), and the two rubber gaskets (4) are respectively arranged at the edge positions of the upper surface and the lower surface of the metal membrane (5);
the diameter of the metal diaphragm (5) is between the inner diameter and the outer diameter of the upper cavity (8) and the lower cavity (8);
the inner diameter of the rubber gasket (4) is smaller than the diameter of the metal diaphragm (5), and the outer diameter of the rubber gasket is larger than the diameter of the metal diaphragm (5).
2. A metallic membrane end-to-cross-flow filtration dual-purpose cup device according to claim 1, wherein the water inlet (12) and the first water outlet (10) are vertically offset.
3. A metal membrane end-to-cross-flow filtration dual-purpose cup device according to claim 1, wherein said housing (1) is made of tempered glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710116276.XA CN106986420B (en) | 2017-03-01 | 2017-03-01 | Metal film terminal-cross flow filtration double-purpose cup device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710116276.XA CN106986420B (en) | 2017-03-01 | 2017-03-01 | Metal film terminal-cross flow filtration double-purpose cup device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106986420A CN106986420A (en) | 2017-07-28 |
| CN106986420B true CN106986420B (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710116276.XA Active CN106986420B (en) | 2017-03-01 | 2017-03-01 | Metal film terminal-cross flow filtration double-purpose cup device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111905570A (en) * | 2020-07-14 | 2020-11-10 | 同济大学 | Cross flow-terminal filtration multipurpose metal membrane tank type filtering device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0707884B1 (en) * | 1994-10-21 | 2001-06-13 | Rochem Ultrafiltrations Systeme Gesellschaft für Abwasserreinigung mbH | Filtration and separation apparatus, especially for biological-organic fluids with filter elements in the form of membrane pads |
| GB2306897B (en) * | 1995-11-09 | 1999-11-03 | Smiths Industries Plc | Filters |
| CN201470325U (en) * | 2009-09-08 | 2010-05-19 | 南京中医药大学 | Membrane separating cup |
| CN204319889U (en) * | 2014-11-30 | 2015-05-13 | 成都易态科技有限公司 | Terminal cross-flow double-purpose filter and filter assemblies |
| CN204897877U (en) * | 2015-08-28 | 2015-12-23 | 铁岭金铎科技股份有限公司 | Acidification reaction device with nigre production acidizing oil |
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