CN115591411A - Ceramic flat membrane process flow and using method - Google Patents
Ceramic flat membrane process flow and using method Download PDFInfo
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- CN115591411A CN115591411A CN202211228293.XA CN202211228293A CN115591411A CN 115591411 A CN115591411 A CN 115591411A CN 202211228293 A CN202211228293 A CN 202211228293A CN 115591411 A CN115591411 A CN 115591411A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0039—Inorganic membrane manufacture
- B01D67/0072—Inorganic membrane manufacture by deposition from the gaseous phase, e.g. sputtering, CVD, PVD
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0081—After-treatment of organic or inorganic membranes
- B01D67/0095—Drying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/06—Flat 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
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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
- B01D2323/00—Details relating to membrane preparation
- B01D2323/26—Spraying processes
Abstract
The invention discloses a ceramic flat membrane process flow, which comprises the following steps: s1, selecting materials: two kinds of alumina powder are adopted and marked as A powder and B powder, and water, titanium dioxide, a dispersant, a pore-forming agent and an auxiliary adsorbent are selected; s2, preparation of a vector: cleaning the flat plate type carrier, and drying the cleaned flat plate type carrier; s3 preparation of the first mixture: mixing the powder A with a pore-forming agent to obtain a first mixture C; the invention has the advantages of enhancing the filtering and adsorbing effects of the ceramic flat membrane, having strong corrosion resistance and being easy to clean, adopts the auxiliary adsorbent to facilitate the filtering of impurities in the wastewater by the ceramic flat membrane, improves the physical properties of the ceramic flat membrane through twice spraying and film coating, enhances the treatment capacity of filtering and adsorption, and solves the problems of weak adsorption and filtering effects, general corrosion resistance and difficult cleaning of the existing ceramic flat membrane.
Description
Technical Field
The invention relates to the technical field of ceramic flat membrane, in particular to a ceramic flat membrane process flow and a use method.
Background
As a novel separation medium, the ceramic flat membrane has the advantages of good thermal stability, high separation efficiency, chemical corrosion resistance, easy cleaning, long service life, energy conservation, simple production equipment, no pollution and the like. Has gradually gained wider and wider application in the aspects of petroleum processing, food processing, waste water treatment, medical technology, metallurgical industry, environmental engineering and the like.
Chinese patent network discloses a method for preparing an alumina flat ceramic membrane, which has the application number: 201710769733.5, published as: CN107469642a, which includes: and (3) sintering the surface of the support body twice to form a film, and preparing a stably dispersed ceramic film suspension. The method prepares calcined alumina powder with different grain diameters, a suspending agent, a dispersing agent and water into a plurality of suspensions, and then carries out two-time spraying film forming and sintering on a support body in sequence from large to small according to the grain diameter of alumina to obtain a ceramic membrane finished product with complete and continuous membrane layer, 0.12-1.50 mu m of average pore diameter and narrow pore diameter distribution.
Disclosure of Invention
The invention aims to provide a ceramic flat membrane process flow and a using method, which have the advantages of capability of enhancing the filtering and adsorbing effects of the ceramic flat membrane, strong corrosion resistance and easiness in cleaning, and solve the problems of weak adsorption and filtering effects, general corrosion resistance and difficulty in cleaning of the conventional ceramic flat membrane.
In order to achieve the purpose, the invention provides the following technical scheme: a ceramic flat membrane process flow comprises the following steps:
s1, material selection: two kinds of alumina powder are adopted and marked as powder A and powder B, and water, titanium dioxide, a dispersing agent, a pore-forming agent and an auxiliary adsorbent are selected;
s2, preparation of a vector: cleaning the flat plate type carrier, and drying the cleaned flat plate type carrier;
s3 preparation of the first mixture: mixing the powder A with a pore-forming agent to obtain a first mixture C;
s4 preparation of the second mixture: mixing the powder B, water, titanium dioxide, a dispersing agent and an auxiliary adsorbent to obtain a second mixture D;
s5, film spraying: the first mixture C and the second mixture D are uniformly sprayed on the surface of the flat plate type carrier.
Preferably, in the step S1, the particle size of the powder a is 0.3 to 0.5 μm, and the particle size of the powder B is 0.1 to 0.2 μm.
Preferably, in the step S2, the flat plate type carrier is cleaned by using an ultrasonic cleaning machine, and then dried.
Preferably, in the step S3, the powder a and the pore-forming agent are dispersed by a dispersing machine.
Preferably, in the step S5, the first mixture C is introduced into a spraying device, and the flat carrier is sprayed through a nozzle, and then the flat carrier is dried, wherein the drying temperature is 1300 ℃.
Preferably, in the step S5, after the first mixture C is sprayed and cooled, the second spraying is performed, the second mixture D is sprayed, and the flat plate-type carrier is dried for the second time, where the drying temperature is 1500 ℃.
Preferably, in step S1, the material of the auxiliary adsorbent is activated carbon fiber.
Preferably, the pore-forming agent consists of graphite and starch.
Preferably, the A powder accounts for 40 to 45 percent; b powder 30-35%; 5-10% of water; 5-10% of titanium dioxide; 1-5% of a dispersant; 1-5% of pore-forming agent; 1-5% of auxiliary adsorbent.
A use method of a ceramic flat membrane comprises the following steps:
(1) Combining the formed ceramic flat membrane with a flat carrier, and connecting a water inlet of the flat carrier with a water outlet of a purification device;
(2) Connecting a water outlet of the flat plate type carrier with a water purifying port of a purifying device;
(3) Connecting a waste water port of the flat plate type carrier with a waste water port of a purifying device;
(4) And (4) introducing wastewater, introducing the wastewater from a water inlet of the purifying equipment, filtering the wastewater to flow out of a water purifying port of the flat plate type carrier, and filtering the wastewater to flow out of a wastewater port of the purifying equipment.
Compared with the prior art, the invention has the following beneficial effects:
the invention has the advantages of enhancing the filtering and adsorbing effects of the ceramic flat membrane, strong corrosion resistance and easy cleaning, adopts the auxiliary adsorbent to facilitate the filtering of impurities in the wastewater by the ceramic flat membrane, improves the physical properties of the ceramic flat membrane through twice spraying and film coating, enhances the treatment capacity of filtering and adsorption, and solves the problems of weak adsorption and filtering effects, general corrosion resistance and difficult cleaning of the existing ceramic flat membrane.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The first embodiment is as follows:
42% of A powder; 35% of B powder; 8% of water; 6 percent of titanium dioxide; 3% of a dispersant; 3% of pore-forming agent; 3% of auxiliary adsorbent;
a ceramic flat membrane process flow comprises the following steps:
s1, selecting materials: two kinds of alumina powder are adopted and marked as powder A and powder B, and water, titanium dioxide, a dispersing agent, a pore-forming agent and an auxiliary adsorbent are selected; the particle size of the powder A is 0.3 mu m, the particle size of the powder B is 0.1 mu m, the auxiliary adsorbent is made of activated carbon fiber, and the pore-forming agent is composed of graphite and starch.
S2, preparation of a vector: cleaning the flat plate type carrier, and drying the cleaned flat plate type carrier; and cleaning the flat plate type carrier by using an ultrasonic cleaning machine, and then drying the flat plate type carrier.
S3 preparation of the first mixture: mixing the powder A with a pore-forming agent to obtain a first mixture C; and dispersing the A powder and the pore-forming agent by a dispersion machine.
S4 preparation of the second mixture: mixing the powder B, water, titanium dioxide, a dispersing agent and an auxiliary adsorbent to obtain a second mixture D;
s5, film spraying: uniformly spraying the first mixture C and the second mixture D on the surface of a flat plate type carrier, introducing the first mixture C into a spraying device, spraying the flat plate type carrier through a nozzle, and drying the flat plate type carrier, wherein the drying temperature is 1300 ℃.
Example two:
40% of A powder; 32% of B powder; 8% of water; 10% of titanium dioxide; 3% of a dispersant; 3% of pore-forming agent; 4% of auxiliary adsorbent;
a ceramic flat membrane process flow comprises the following steps:
s1, selecting materials: two kinds of alumina powder are adopted and marked as A powder and B powder, and water, titanium dioxide, a dispersant, a pore-forming agent and an auxiliary adsorbent are selected; the particle size of the powder A is 0.3 mu m, the particle size of the powder B is 0.1 mu m, the auxiliary adsorbent is made of activated carbon fibers, and the pore-forming agent is composed of graphite and starch.
S2, preparation of a vector: cleaning the flat plate type carrier, and drying the cleaned flat plate type carrier; and cleaning the flat plate type carrier by using an ultrasonic cleaning machine, and then drying the flat plate type carrier.
S3 preparation of the first mixture: mixing the powder A with a pore-forming agent to obtain a first mixture C; and dispersing the A powder and the pore-forming agent by a dispersion machine.
S4 preparation of the second mixture: mixing the powder B, water, titanium dioxide, a dispersing agent and an auxiliary adsorbent to obtain a second mixture D;
s5, film spraying: uniformly spraying the first mixture C and the second mixture D on the surface of a flat plate type carrier, introducing the first mixture C into a spraying device, spraying the flat plate type carrier through a nozzle, and drying the flat plate type carrier, wherein the drying temperature is 1300 ℃.
Example three:
45% of A powder; 30% of B powder; 5% of water; 10% of titanium dioxide; 4% of a dispersant; 3% of pore-forming agent; 3% of auxiliary adsorbent;
a ceramic flat membrane process flow comprises the following steps:
s1, selecting materials: two kinds of alumina powder are adopted and marked as powder A and powder B, and water, titanium dioxide, a dispersing agent, a pore-forming agent and an auxiliary adsorbent are selected; the particle size of the powder A is 0.3 mu m, the particle size of the powder B is 0.1 mu m, the auxiliary adsorbent is made of activated carbon fiber, and the pore-forming agent is composed of graphite and starch.
S2, preparing a vector: cleaning the flat plate type carrier, and drying the cleaned flat plate type carrier; and cleaning the flat plate type carrier by using an ultrasonic cleaning machine, and then drying the flat plate type carrier.
S3 preparation of the first mixture: mixing the powder A with a pore-forming agent to obtain a first mixture C; and dispersing the A powder and the pore-forming agent by a dispersion machine.
S4 preparation of the second mixture: mixing the powder B, water, titanium dioxide, a dispersing agent and an auxiliary adsorbent to obtain a second mixture D;
s5, film spraying: uniformly spraying the first mixture C and the second mixture D on the surface of a flat plate type carrier, introducing the first mixture C into a spraying device, spraying the flat plate type carrier through a nozzle, and drying the flat plate type carrier, wherein the drying temperature is 1300 ℃.
Example four:
45% of A powder; 35% of B powder; 5% of water; 5% of titanium dioxide; 3% of a dispersant; 4% of pore-forming agent; 3% of auxiliary adsorbent;
a ceramic flat membrane process flow comprises the following steps:
s1, selecting materials: two kinds of alumina powder are adopted and marked as powder A and powder B, and water, titanium dioxide, a dispersing agent, a pore-forming agent and an auxiliary adsorbent are selected; the particle size of the powder A is 0.3 mu m, the particle size of the powder B is 0.1 mu m, the auxiliary adsorbent is made of activated carbon fiber, and the pore-forming agent is composed of graphite and starch.
S2, preparation of a vector: cleaning the flat plate type carrier, and drying the cleaned flat plate type carrier; and cleaning the flat plate type carrier by using an ultrasonic cleaning machine, and then drying the flat plate type carrier.
S3 preparation of the first mixture: mixing the powder A with a pore-forming agent to obtain a first mixture C; and dispersing the A powder and the pore-forming agent by a dispersion machine.
S4 preparation of the second mixture: mixing the powder B, water, titanium dioxide, a dispersing agent and an auxiliary adsorbent to obtain a second mixture D;
s5, film spraying: uniformly spraying the first mixture C and the second mixture D on the surface of a flat plate type carrier, introducing the first mixture C into a spraying device, spraying the flat plate type carrier through a nozzle, and drying the flat plate type carrier, wherein the drying temperature is 1300 ℃.
Example five:
selecting and using the ceramic flat membrane produced in the first embodiment, the second embodiment, the third embodiment and the fourth embodiment, and observing the filtering effect of the ceramic flat membrane;
a use method of a ceramic flat membrane comprises the following steps:
(1) Combining the four formed ceramic flat membranes and a flat carrier respectively, and connecting a water inlet of the flat carrier with a water outlet of a purification device;
(2) Connecting a water outlet of the flat plate type carrier with a water purifying port of a purifying device;
(3) Connecting a waste water port of the flat plate type carrier with a waste water port of a purifying device;
(4) And (4) introducing wastewater, introducing the wastewater from a water inlet of the purifying equipment, filtering the wastewater to flow out of a water purifying port of the flat plate type carrier, and filtering the wastewater to flow out of a wastewater port of the purifying equipment.
And (4) performing selective inspection on the purified water in the step (4), and observing the filtering effects of the four groups of ceramic flat sheet membranes:
| example one | Example two | EXAMPLE III | Example four | |
| TDS(mg/L) | 67 | 56 | 59 | 62 |
As can be seen from the above table, in the present technical solution, the ceramic flat membrane prepared in example two has the optimal filtration and adsorption performance.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A ceramic flat membrane process flow is characterized by comprising the following steps:
s1, selecting materials: two kinds of alumina powder are adopted and marked as powder A and powder B, and water, titanium dioxide, a dispersing agent, a pore-forming agent and an auxiliary adsorbent are selected;
s2, preparation of a vector: cleaning the flat plate type carrier, and drying the cleaned flat plate type carrier;
s3 preparation of the first mixture: mixing the powder A with a pore-forming agent to obtain a first mixture C;
s4 preparation of the second mixture: mixing the powder B, water, titanium dioxide, a dispersing agent and an auxiliary adsorbent to obtain a second mixture D;
s5, film spraying: uniformly spraying the first mixture C and the second mixture D on the surface of a flat plate type carrier.
2. The ceramic flat sheet membrane process flow of claim 1, wherein: in the step S1, the particle size of the powder A is 0.3-0.5 μm, and the particle size of the powder B is 0.1-0.2 μm.
3. The ceramic flat sheet membrane process flow of claim 1, wherein: in the step S2, the flat plate type carrier is cleaned by an ultrasonic cleaning machine, and then dried.
4. The ceramic flat sheet membrane process flow of claim 1, wherein: in the step S3, a dispersing machine is used to disperse the a powder and the pore-forming agent.
5. The ceramic flat sheet membrane process flow of claim 1, wherein: in the step S5, the first mixture C is introduced into a spraying device, and the flat plate type carrier is sprayed through a nozzle, and then the flat plate type carrier is dried, wherein the drying temperature is 1300 ℃.
6. The ceramic flat sheet membrane process flow of claim 1, wherein: in the step S5, after the first mixture C is sprayed and cooled, the second mixture D is sprayed, and the flat plate type carrier is dried for the second time, wherein the drying temperature is 1500 ℃.
7. The ceramic flat sheet membrane process flow of claim 1, wherein: in the step S1, the auxiliary adsorbent is made of activated carbon fiber.
8. The ceramic flat sheet membrane process flow of claim 1, wherein: the pore-forming agent is composed of graphite and starch.
9. The ceramic flat sheet membrane process flow according to claim 1, characterized in that: 40-45% of the powder A; 30-35% of B powder; 5-10% of water; 5-10% of titanium dioxide; 1-5% of a dispersant; 1-5% of pore-forming agent; 1-5% of auxiliary adsorbent.
10. The use method of the ceramic flat membrane is characterized by comprising the following steps:
(1) Combining the formed ceramic flat membrane with a flat carrier, and connecting a water inlet of the flat carrier with a water outlet of a purification device;
(2) Connecting a water outlet of the flat plate type carrier with a water purifying port of a purifying device;
(3) Connecting a waste water port of the flat plate type carrier with a waste water port of a purifying device;
(4) And (4) introducing wastewater, introducing the wastewater from a water inlet of the purifying equipment, filtering the wastewater to flow out of a water purifying port of the flat plate type carrier, and filtering the wastewater to flow out of a wastewater port of the purifying equipment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211228293.XA CN115591411A (en) | 2022-10-09 | 2022-10-09 | Ceramic flat membrane process flow and using method |
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| CN202211228293.XA CN115591411A (en) | 2022-10-09 | 2022-10-09 | Ceramic flat membrane process flow and using method |
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| CN115591411A true CN115591411A (en) | 2023-01-13 |
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| CN202211228293.XA Pending CN115591411A (en) | 2022-10-09 | 2022-10-09 | Ceramic flat membrane process flow and using method |
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