CN108339417A - A kind of antibacterial composite reverse osmosis membrane and preparation method of sewage disposal ring containing melon - Google Patents
A kind of antibacterial composite reverse osmosis membrane and preparation method of sewage disposal ring containing melon Download PDFInfo
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- CN108339417A CN108339417A CN201810192579.4A CN201810192579A CN108339417A CN 108339417 A CN108339417 A CN 108339417A CN 201810192579 A CN201810192579 A CN 201810192579A CN 108339417 A CN108339417 A CN 108339417A
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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
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
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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
- B01D67/0002—Organic membrane manufacture
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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
- B01D69/12—Composite membranes; Ultra-thin 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
- B01D71/06—Organic material
- B01D71/66—Polymers having sulfur in the main chain, with or without nitrogen, oxygen or carbon only
- B01D71/68—Polysulfones; Polyethersulfones
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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
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
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- B01D2325/48—Antimicrobial properties
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Abstract
The present invention relates to sewage treatment fields, disclose a kind of antibacterial composite reverse osmosis membrane and preparation method of sewage disposal ring containing melon.Including following preparation process：（1）Hydroxyl melon ring, magnesia nanometer line are added in solvent dimethylformamide, the composite material of hydroxyl melon ring supported magnesium oxide nano wire is made in ultrasonic disperse and temperature reaction；（2）Prepare m-phenylene diamine (MPD) aqueous phase solution；（3）Prepare pyromellitic trimethylsilyl chloride oil-phase solution；（4）After 25 ~ 30 parts by weight composite materials are scattered in 30 ~ 35 parts by weight aqueous phase solutions, polysulfone porous support membrane is immersed, then be in contact to get the antibacterial composite reverse osmosis membrane of sewage disposal ring containing melon with 35 ~ 45 parts by weight oil-phase solutions.Antibacterial composite reverse osmosis membrane produced by the present invention is compared with common antibacterial reverse osmosis membrane, the good dispersion of anti-biotic material, strong adhesive force, and intensity is high, and good anti-bacterial effect, service life is long, is suitble to large-scale promotion production application.
Description
Technical field
The present invention relates to sewage treatment field, disclose a kind of sewage disposal ring containing melon antibacterial composite reverse osmosis membrane and
Preparation method.
Background technology
In the early 1980s, the U.S. just overcomes the defect of cellulosic material, high water flux, interception capacity with high salt are developed
Composite polyamide membranes so that reverse osmosis technology is widely used in industrial circle.Now from initial seawater and brackish water desalination and
The sphere of life of various pure water manufactures is applied to be developed to wastewater treatment, the field of environment protection of reuse.One side water resource lacks at present,
Water source more lower than former quality is utilized it is required that continually developing；The pressure of environmental protection administration of another aspect government application and the public are to height
The demand of quality potable mineral water requires processing method update, degree for the treatment of to improve, this gives membrane separation technique especially reverse osmosis membrane skill
Art brings huge market potential and development space.
Reverse osmosis is a kind of using pressure as the membrane separating process of motive force.In use to generate reverse osmotic pressure, water need to be used
It pumps and applies pressure to salt-containing solution or waste water, to overcome naturally osmotic to press and the resistance of film, so that water is penetrated reverse osmosis membrane, by water
Middle dissolving salt or pollution impurity are prevented in the other side of reverse osmosis membrane.Film is the heart of counter-infiltration system, and the quality of film is directly certainly
Determine the performance of counter-infiltration system.There is different chemical stabilities, thermostabilization using reverse osmosis membrane prepared by different membrane materials
Property, mechanical performance and affine performance.Currently, common membrane material has：1. cellulose esters, cellulose diacetate and triacetate fiber
Element；2. poly aromatic amide；3. polybenzimidazoles, polybenzimidazoles ketone, polyamide hydrazides and polyimides.
In recent years, by introducing the inorganic nano material that water can be promoted to transmit in reverse osmosis membrane aromatic polyamides Motor cortex
Material improves the performance of film as the research hotspot in reverse osmosis membrane field, and the inorganic nano material being related to includes nano metal, nanometer two
Silica, nano zeolite, montmorillonite, carbon nanotube and various functions carbon nano tube, graphene and its derivative.Although at present
It has been made great progress in terms of the research and development of anti-pollution reverse osmosis membrane, but still reverse osmosis membrane surface can not be inhibited
Biochemical pollution, and the bacteriostasis property for improving reverse osmosis membrane is crucial.
Chinese invention patent application number 201210007030.6 disclose a kind of polymer compound film structure, in particular to
A kind of macromolecule complex reverse osmosis membrane with antibacterial functions.The antibacterial composite reverse osmosis membrane of the invention is characterized in that porous branch
A strata amide family macromolecule desalination layer is compounded with by polyamine and polynary acyl chlorides interfacial polycondensation on support film, in macromolecule desalination
One layer of high molecular material with antibacterial functions is compounded with by surface coating technique on layer.The invention passes through existing compound anti-
Permeate sericin of the film surface coating with antibacterial functions so that the hydrophily and bacteriostasis property of complex reverse osmosis membrane obtain greatly
It is big to improve, there is good stable against biological contamination performance.The invention also has the spy easily prepared, salt rejection rate is high and water flux is big
Point.The reverse osmosis membrane tool of the invention has been widely used.
Chinese invention patent application number 201410161382.6 discloses a kind of reverse osmosis membrane and preparation method thereof, belongs to film
Separation technology field.Include the metal fullerene being dispersed in the reverse osmosis membrane in reverse osmosis membrane, the preferably described metal is rich
Le alkene is Gd@C82, the i.e. C82 of embedded metal gadolinium.The invention additionally provides the preparation method of the reverse osmosis membrane, including prepares
Metal fullerene, is then dissolved in by the aqueous phase solution dissolved with m-phenylene diamine (MPD) and the oil-phase solution dissolved with pyromellitic trimethylsilyl chloride
In the oil-phase solution, or hydroxylated metal fullerene is dissolved in the aqueous phase solution, obtained by interfacial polymerization
The reverse osmosis membrane.The invention utilizes the unique cage structure of metal fullerene, nano-pore structure and good hydrone mass transfer
Channeling is introduced into polyamide separating layer, can effectively improve the water flux and salt-stopping rate of reverse osmosis membrane, and makes institute
Stating reverse osmosis membrane has good anti-microbial property.
According to above-mentioned, it is primarily present two kinds of techniques in existing scheme and prepares antibacterial reverse osmosis membranes, one is coated antibacterial material
The defects of material, but its poor adhesive force cause antibacterial effect to be had a greatly reduced quality, and that there are intensity is low, and service life is short；Second,
Metal fullerene is introduced, but its dispersion is uneven, and its is with high costs, influences its popularization, and the present invention proposes a kind of dirt
The antibacterial composite reverse osmosis membrane and preparation method of water process ring containing melon, can effectively solve above-mentioned technical problem.
Invention content
That there are anti-microbial properties is poor for the wider reverse osmosis membrane of application at present, easily by germ contamination the problem of, and traditional antibacterial
In lifting process, the poor adhesive force of anti-biotic material, intensity is low, and dispersion is uneven, and antibacterial effect is poor, and service life is short.
To solve the above problems, the present invention uses following technical scheme：
A kind of preparation method of the antibacterial composite reverse osmosis membrane of sewage disposal ring containing melon, the detailed process of preparation are：
（1）Hydroxyl melon ring is dissolved in solvent dimethylformamide, magnesia nanometer line, ultrasonic disperse is added, then stir on one side
It mixes and heats up on one side, after 30 ~ 50min, filtering, dry, the composite material of obtained hydroxyl melon ring supported magnesium oxide nano wire；
（2）M-phenylene diamine (MPD) is soluble in water, aqueous phase solution is made；
（3）Pyromellitic trimethylsilyl chloride is dissolved in organic solvent, oil-phase solution is made；
（4）By step（1）Composite material obtained is scattered in step（2）In aqueous phase solution obtained, polysulfone porous support is immersed
Film, then with step（3）Oil-phase solution obtained is in contact, and makes m-phenylene diamine (MPD) with pyromellitic trimethylsilyl chloride at the interface of water phase and oil phase
Polymerisation occurs and forms film, while hydroxyl melon ring supported magnesium oxide nano wire is dispersed in film, is made at sewage
Manage the antibacterial composite reverse osmosis membrane of the ring containing melon.
Preferably, step（1）In the dispersion, by weight, wherein：18 ~ 25 parts of hydroxyl melon ring, dimethyl methyl
55 ~ 67 parts of amide, 15 ~ 20 parts of magnesia nanometer line.
Preferably, step（1）The ultrasonic frequency of the ultrasonic disperse is 100 ~ 150kHz, and wavelength is 14 ~ 16mm.
Preferably, step（1）The dispersion temperature is 50 ~ 55 DEG C.
Preferably, step（2）In the aqueous phase solution, by weight, wherein：35 ~ 50 parts of m-phenylene diamine (MPD), water 50 ~ 65
Part.
Preferably, step（3）The organic solvent is one kind in benzene, chlorine benzene,toluene,xylene, phenol.
Preferably, step（3）In the oil-phase solution, by weight, wherein：It is 25 ~ 30 parts of pyromellitic trimethylsilyl chloride, organic
70 ~ 75 parts of solvent.
Preferably, step（4）In the interfacial polymerization system, by weight, wherein：Hydroxyl melon ring supported magnesium oxide is received
25 ~ 30 parts of rice noodles, 30 ~ 35 parts of aqueous phase solution, 35 ~ 45 parts of oil-phase solution.
Preferably, step（4）The film thickness is 20 ~ 40 μm.
By a kind of antibacterial composite reverse osmosis membrane for sewage disposal ring containing melon that the above method is prepared, have using melon ring
The characteristics of standby big annular space chamber, both ends open, cage structure, magnesia nanometer line antiseptic is carried on wherein, and can realized
It is even to be dispersed in polyamide separating layer, realize good antibacterial effect；Carrier melon ring itself also has good adsorptivity simultaneously
Can, and institute's hydroxyl is chemically bonded with group in separating layer, adhesion is improved.
The present invention provides a kind of antibacterial composite reverse osmosis membrane of sewage disposal ring containing melon and preparation methods, with existing skill
Art is compared, and the feature and excellent effect protruded is：
1, the antibacterial composite reverse osmosis membrane that sewage disposal ring containing melon is prepared using melon ring supported magnesium oxide nano wire is proposed
Method.
2, by being carried on magnesia nanometer line antiseptic in the melon ring with special construction, antiseptic is effectively realized
It is evenly dispersed in membrane material, it has been obviously improved antibacterial effect.
3, the chemistry for the good adsorption properties and institute's hydroxyl and group in separating layer having using carrier melon ring itself
Bonding, improves adhesion property, the high strength, service life of gained reverse osmosis membrane is long.
Specific implementation mode
In the following, the present invention will be further described in detail by way of specific embodiments, but this should not be interpreted as to the present invention
Range be only limitted to example below.Without departing from the idea of the above method of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
（1）Hydroxyl melon ring is dissolved in solvent dimethylformamide, magnesia nanometer line, ultrasonic disperse is added, then stir on one side
It mixes and heats up on one side, after 40min, filtering, dry, the composite material of obtained hydroxyl melon ring supported magnesium oxide nano wire；Ultrasonic disperse
Ultrasonic frequency be 130kHz, wavelength 15mm；Dispersion temperature is 52 DEG C；
In dispersion, by weight, wherein：22 parts of hydroxyl melon ring, 60 parts of dimethylformamide, magnesia nanometer line 18
Part；
（2）M-phenylene diamine (MPD) is soluble in water, aqueous phase solution is made；
In aqueous phase solution, by weight, wherein：42 parts of m-phenylene diamine (MPD), 58 parts of water；
（3）Pyromellitic trimethylsilyl chloride is dissolved in organic solvent, oil-phase solution is made；Organic solvent is benzene；
In oil-phase solution, by weight, wherein：27 parts of pyromellitic trimethylsilyl chloride, 73 parts of organic solvent；
（4）By step（1）Composite material obtained is scattered in step（2）In aqueous phase solution obtained, polysulfone porous support is immersed
Film, then with step（3）Oil-phase solution obtained is in contact, and the antibacterial composite reverse osmosis membrane of sewage disposal ring containing melon is made；It is thin
Film average thickness is 30 μm；
In interfacial polymerization system, by weight, wherein：27 parts of hydroxyl melon ring supported magnesium oxide nano wire, 32 parts of aqueous phase solution,
41 parts of oil-phase solution.
Antibacterial composite reverse osmosis membrane made from embodiment 1, anti-biotic material residual rate, Escherichia coli removal rate and membrane flux
Rate of descent is as shown in table 1.
Embodiment 2
（1）Hydroxyl melon ring is dissolved in solvent dimethylformamide, magnesia nanometer line, ultrasonic disperse is added, then stir on one side
It mixes and heats up on one side, after 30min, filtering, dry, the composite material of obtained hydroxyl melon ring supported magnesium oxide nano wire；Ultrasonic disperse
Ultrasonic frequency be 100kHz, wavelength 16mm；Dispersion temperature is 50 DEG C；
In dispersion, by weight, wherein：25 parts of hydroxyl melon ring, 55 parts of dimethylformamide, magnesia nanometer line 20
Part；
（2）M-phenylene diamine (MPD) is soluble in water, aqueous phase solution is made；
In aqueous phase solution, by weight, wherein：35 parts of m-phenylene diamine (MPD), 65 parts of water；
（3）Pyromellitic trimethylsilyl chloride is dissolved in organic solvent, oil-phase solution is made；Organic solvent is chlorobenzene；
In oil-phase solution, by weight, wherein：25 parts of pyromellitic trimethylsilyl chloride, 75 parts of organic solvent；
（4）By step（1）Composite material obtained is scattered in step（2）In aqueous phase solution obtained, polysulfone porous support is immersed
Film, then with step（3）Oil-phase solution obtained is in contact, and the antibacterial composite reverse osmosis membrane of sewage disposal ring containing melon is made；It is thin
Film average thickness is 20 μm；
In interfacial polymerization system, by weight, wherein：25 parts of hydroxyl melon ring supported magnesium oxide nano wire, 30 parts of aqueous phase solution,
45 parts of oil-phase solution.
Antibacterial composite reverse osmosis membrane made from embodiment 2, anti-biotic material residual rate, Escherichia coli removal rate and membrane flux
Rate of descent is as shown in table 1.
Embodiment 3
（1）Hydroxyl melon ring is dissolved in solvent dimethylformamide, magnesia nanometer line, ultrasonic disperse is added, then stir on one side
It mixes and heats up on one side, after 50min, filtering, dry, the composite material of obtained hydroxyl melon ring supported magnesium oxide nano wire；Ultrasonic disperse
Ultrasonic frequency be 150kHz, wavelength 14mm；Dispersion temperature is 55 DEG C；
In dispersion, by weight, wherein：25 parts of hydroxyl melon ring, 55 parts of dimethylformamide, magnesia nanometer line 20
Part；
（2）M-phenylene diamine (MPD) is soluble in water, aqueous phase solution is made；
In aqueous phase solution, by weight, wherein：50 parts of m-phenylene diamine (MPD), 50 parts of water；
（3）Pyromellitic trimethylsilyl chloride is dissolved in organic solvent, oil-phase solution is made；Organic solvent is toluene；
In oil-phase solution, by weight, wherein：30 parts of pyromellitic trimethylsilyl chloride, 70 parts of organic solvent；
（4）By step（1）Composite material obtained is scattered in step（2）In aqueous phase solution obtained, polysulfone porous support is immersed
Film, then with step（3）Oil-phase solution obtained is in contact, and the antibacterial composite reverse osmosis membrane of sewage disposal ring containing melon is made；It is thin
Film average thickness is 40 μm；
In interfacial polymerization system, by weight, wherein：30 parts of hydroxyl melon ring supported magnesium oxide nano wire, 35 parts of aqueous phase solution,
35 parts of oil-phase solution.
Antibacterial composite reverse osmosis membrane made from embodiment 3, anti-biotic material residual rate, Escherichia coli removal rate and membrane flux
Rate of descent is as shown in table 1.
Embodiment 4
（1）Hydroxyl melon ring is dissolved in solvent dimethylformamide, magnesia nanometer line, ultrasonic disperse is added, then stir on one side
It mixes and heats up on one side, after 35min, filtering, dry, the composite material of obtained hydroxyl melon ring supported magnesium oxide nano wire；Ultrasonic disperse
Ultrasonic frequency be 110kHz, wavelength 16mm；Dispersion temperature is 52 DEG C；
In dispersion, by weight, wherein：20 parts of hydroxyl melon ring, 63 parts of dimethylformamide, magnesia nanometer line 17
Part；
（2）M-phenylene diamine (MPD) is soluble in water, aqueous phase solution is made；
In aqueous phase solution, by weight, wherein：39 parts of m-phenylene diamine (MPD), 61 parts of water；
（3）Pyromellitic trimethylsilyl chloride is dissolved in organic solvent, oil-phase solution is made；Organic solvent is dimethylbenzene；
In oil-phase solution, by weight, wherein：28 parts of pyromellitic trimethylsilyl chloride, 72 parts of organic solvent；
（4）By step（1）Composite material obtained is scattered in step（2）In aqueous phase solution obtained, polysulfone porous support is immersed
Film, then with step（3）Oil-phase solution obtained is in contact, and the antibacterial composite reverse osmosis membrane of sewage disposal ring containing melon is made；It is thin
Film average thickness is 25 μm；
In interfacial polymerization system, by weight, wherein：27 parts of hydroxyl melon ring supported magnesium oxide nano wire, 32 parts of aqueous phase solution,
41 parts of oil-phase solution.
Antibacterial composite reverse osmosis membrane made from embodiment 4, anti-biotic material residual rate, Escherichia coli removal rate and membrane flux
Rate of descent is as shown in table 1.
Embodiment 5
（1）Hydroxyl melon ring is dissolved in solvent dimethylformamide, magnesia nanometer line, ultrasonic disperse is added, then stir on one side
It mixes and heats up on one side, after 45min, filtering, dry, the composite material of obtained hydroxyl melon ring supported magnesium oxide nano wire；Ultrasonic disperse
Ultrasonic frequency be 14kHz, wavelength 14mm；Dispersion temperature is 54 DEG C；
In dispersion, by weight, wherein：23 parts of hydroxyl melon ring, 58 parts of dimethylformamide, magnesia nanometer line 19
Part；
（2）M-phenylene diamine (MPD) is soluble in water, aqueous phase solution is made；
In aqueous phase solution, by weight, wherein：48 parts of m-phenylene diamine (MPD), 52 parts of water；
（3）Pyromellitic trimethylsilyl chloride is dissolved in organic solvent, oil-phase solution is made；Organic solvent is phenol；
In oil-phase solution, by weight, wherein：28 parts of pyromellitic trimethylsilyl chloride, 72 parts of organic solvent；
（4）By step（1）Composite material obtained is scattered in step（2）In aqueous phase solution obtained, polysulfone porous support is immersed
Film, then with step（3）Oil-phase solution obtained is in contact, and the antibacterial composite reverse osmosis membrane of sewage disposal ring containing melon is made；It is thin
Film average thickness is 35 μm；
In interfacial polymerization system, by weight, wherein：28 parts of hydroxyl melon ring supported magnesium oxide nano wire, 32 parts of aqueous phase solution,
40 parts of oil-phase solution.
Antibacterial composite reverse osmosis membrane made from embodiment 5, anti-biotic material residual rate, Escherichia coli removal rate and membrane flux
Rate of descent is as shown in table 1.
Embodiment 6
（1）Hydroxyl melon ring is dissolved in solvent dimethylformamide, magnesia nanometer line, ultrasonic disperse is added, then stir on one side
It mixes and heats up on one side, after 45min, filtering, dry, the composite material of obtained hydroxyl melon ring supported magnesium oxide nano wire；Ultrasonic disperse
Ultrasonic frequency be 120kHz, wavelength 15mm；Dispersion temperature is 52 DEG C；
In dispersion, by weight, wherein：22 parts of hydroxyl melon ring, 60 parts of dimethylformamide, magnesia nanometer line 18
Part；
（2）M-phenylene diamine (MPD) is soluble in water, aqueous phase solution is made；
In aqueous phase solution, by weight, wherein：45 parts of m-phenylene diamine (MPD), 55 parts of water；
（3）Pyromellitic trimethylsilyl chloride is dissolved in organic solvent, oil-phase solution is made；Organic solvent is benzene；
In oil-phase solution, by weight, wherein：27 parts of pyromellitic trimethylsilyl chloride, 73 parts of organic solvent；
（4）By step（1）Composite material obtained is scattered in step（2）In aqueous phase solution obtained, polysulfone porous support is immersed
Film, then with step（3）Oil-phase solution obtained is in contact, and the antibacterial composite reverse osmosis membrane of sewage disposal ring containing melon is made；It is thin
Film average thickness is 3 μm；
In interfacial polymerization system, by weight, wherein：27 parts of hydroxyl melon ring supported magnesium oxide nano wire, 34 parts of aqueous phase solution,
39 parts of oil-phase solution.
Antibacterial composite reverse osmosis membrane made from embodiment 6, anti-biotic material residual rate, Escherichia coli removal rate and membrane flux
Rate of descent is as shown in table 1.
Comparative example 1
（1）M-phenylene diamine (MPD) is soluble in water, aqueous phase solution is made；
In aqueous phase solution, by weight, wherein：45 parts of m-phenylene diamine (MPD), 55 parts of water；
（2）Pyromellitic trimethylsilyl chloride is dissolved in organic solvent, oil-phase solution is made；Organic solvent is benzene；
In oil-phase solution, by weight, wherein：27 parts of pyromellitic trimethylsilyl chloride, 73 parts of organic solvent；
（3）Magnesia nanometer line is scattered in step（1）In aqueous phase solution obtained, immerse polysulfone porous support membrane, then with step
Suddenly（2）Oil-phase solution obtained is in contact, and sewage disposal antibacterial reverse osmosis membrane is made；Film Average Thickness is 3 μm；
In interfacial polymerization system, by weight, wherein：27 parts of magnesia nanometer line, 34 parts of aqueous phase solution, oil-phase solution 39
Part.
Magnesia nanometer line is not carried on melon ring and composite material is made by comparative example 1, and antibacterial reverse osmosis membrane obtained resists
Bacterium material residual rate, Escherichia coli removal rate and flux depression rate are as shown in table 1.
The test method of above-mentioned performance indicator is：
Direct adhesion test is carried out to antimicrobial compound film produced by the present invention using sonic oscillation test method(s), using 30kHz's
Ultrasonic frequency tests 15min, measures the residual rate of anti-biotic material, characterizes adhesive force between its anti-biotic material and membrane material；
Membrane flux testing experiment is carried out, complex reverse osmosis membrane produced by the present invention is used for Escherichia coli 1.0 × 106The dirt of a/g
Water is tested at 30 DEG C, measures the removal rate of Escherichia coli, characterizes its biocidal property；
Complex reverse osmosis membrane produced by the present invention is used for Escherichia coli 1.0 × 106The sewage of a/g, measures membrane flux afterwards for 24 hours
Changing value, calculate flux depression rate, its antifouling property can be characterized.
Table 1：
| Performance indicator | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Comparative example 1 |
| Anti-biotic material residual rate（%） | 92.4 | 93.3 | 94.2 | 93.6 | 91.8 | 93.4 | 71.2 |
| Escherichia coli removal rate（%） | 89.4 | 92.3 | 91.5 | 93.5 | 93.2 | 92.8 | 76.2 |
| Flux depression rate（%） | 3.4 | 4.5 | 3.6 | 4.8 | 5.1 | 4.2 | 16.8 |
Claims (10)
1. a kind of preparation method of the antibacterial composite reverse osmosis membrane of sewage disposal ring containing melon, which is characterized in that preparation it is specific
Process is：
（1）Hydroxyl melon ring is dissolved in solvent dimethylformamide, magnesia nanometer line, ultrasonic disperse is added, then stir on one side
It mixes and heats up on one side, after 30 ~ 50min, filtering, dry, the composite material of obtained hydroxyl melon ring supported magnesium oxide nano wire；
（2）M-phenylene diamine (MPD) is soluble in water, aqueous phase solution is made；
（3）Pyromellitic trimethylsilyl chloride is dissolved in organic solvent, oil-phase solution is made；
（4）By step（1）Composite material obtained is scattered in step（2）In aqueous phase solution obtained, polysulfone porous support is immersed
Film, then with step（3）Oil-phase solution obtained is in contact, and makes m-phenylene diamine (MPD) with pyromellitic trimethylsilyl chloride at the interface of water phase and oil phase
Polymerisation occurs and forms film, while hydroxyl melon ring supported magnesium oxide nano wire is dispersed in film, is made at sewage
Manage the antibacterial composite reverse osmosis membrane of the ring containing melon.
2. the preparation method of the antibacterial composite reverse osmosis membrane of a kind of sewage disposal ring containing melon according to claim 1, special
Sign is：Step（1）In the dispersion, by weight, wherein：18 ~ 25 parts of hydroxyl melon ring, dimethylformamide 55 ~
67 parts, 15 ~ 20 parts of magnesia nanometer line.
3. the preparation method of the antibacterial composite reverse osmosis membrane of a kind of sewage disposal ring containing melon according to claim 1, special
Sign is：Step（1）The ultrasonic frequency of the ultrasonic disperse is 100 ~ 150kHz, and wavelength is 14 ~ 16mm.
4. the preparation method of the antibacterial composite reverse osmosis membrane of a kind of sewage disposal ring containing melon according to claim 1, special
Sign is：Step（1）The dispersion temperature is 50 ~ 55 DEG C.
5. the preparation method of the antibacterial composite reverse osmosis membrane of a kind of sewage disposal ring containing melon according to claim 1, special
Sign is：Step（2）In the aqueous phase solution, by weight, wherein：35 ~ 50 parts of m-phenylene diamine (MPD), 50 ~ 65 parts of water.
6. the preparation method of the antibacterial composite reverse osmosis membrane of a kind of sewage disposal ring containing melon according to claim 1, special
Sign is：Step（3）The organic solvent is one kind in benzene, chlorine benzene,toluene,xylene, phenol.
7. the preparation method of the antibacterial composite reverse osmosis membrane of a kind of sewage disposal ring containing melon according to claim 1, special
Sign is：Step（3）In the oil-phase solution, by weight, wherein：25 ~ 30 parts of pyromellitic trimethylsilyl chloride, organic solvent 70 ~
75 parts.
8. the preparation method of the antibacterial composite reverse osmosis membrane of a kind of sewage disposal ring containing melon according to claim 1, special
Sign is：Step（4）In the interfacial polymerization system, by weight, wherein：Hydroxyl melon ring supported magnesium oxide nano wire 25 ~
30 parts, 30 ~ 35 parts of aqueous phase solution, 35 ~ 45 parts of oil-phase solution.
9. the preparation method of the antibacterial composite reverse osmosis membrane of a kind of sewage disposal ring containing melon according to claim 1, special
Sign is：Step（4）The film thickness is 20 ~ 40 μm.
10. a kind of compound reverse osmosis of antibacterial for sewage disposal ring containing melon that any one of claim 1 ~ 9 the method is prepared
Permeable membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810192579.4A CN108339417A (en) | 2018-03-09 | 2018-03-09 | A kind of antibacterial composite reverse osmosis membrane and preparation method of sewage disposal ring containing melon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810192579.4A CN108339417A (en) | 2018-03-09 | 2018-03-09 | A kind of antibacterial composite reverse osmosis membrane and preparation method of sewage disposal ring containing melon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110449042A (en) * | 2019-08-28 | 2019-11-15 | 同济大学 | Polyam ide TLC complex reverse osmosis membrane and preparation method thereof with antibacterial stable against biological contamination function |
| CN111871207A (en) * | 2020-07-17 | 2020-11-03 | 中国海洋大学 | Nanowire reverse osmosis composite membrane and preparation method thereof |
| CN112516812A (en) * | 2019-09-17 | 2021-03-19 | 中国石油化工股份有限公司 | Copper-containing antibacterial thin-layer composite film and preparation method and application thereof |
| CN113006376A (en) * | 2021-02-23 | 2021-06-22 | 中厦建设有限公司 | Supporting steel pipe column for deep foundation pit reverse construction method and machining process thereof |
| CN113634141A (en) * | 2020-04-27 | 2021-11-12 | 万华化学集团股份有限公司 | Preparation method of polyamide composite reverse osmosis membrane, reverse osmosis membrane and application of reverse osmosis membrane |
-
2018
- 2018-03-09 CN CN201810192579.4A patent/CN108339417A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110449042A (en) * | 2019-08-28 | 2019-11-15 | 同济大学 | Polyam ide TLC complex reverse osmosis membrane and preparation method thereof with antibacterial stable against biological contamination function |
| CN112516812A (en) * | 2019-09-17 | 2021-03-19 | 中国石油化工股份有限公司 | Copper-containing antibacterial thin-layer composite film and preparation method and application thereof |
| CN113634141A (en) * | 2020-04-27 | 2021-11-12 | 万华化学集团股份有限公司 | Preparation method of polyamide composite reverse osmosis membrane, reverse osmosis membrane and application of reverse osmosis membrane |
| CN111871207A (en) * | 2020-07-17 | 2020-11-03 | 中国海洋大学 | Nanowire reverse osmosis composite membrane and preparation method thereof |
| CN113006376A (en) * | 2021-02-23 | 2021-06-22 | 中厦建设有限公司 | Supporting steel pipe column for deep foundation pit reverse construction method and machining process thereof |
| CN113006376B (en) * | 2021-02-23 | 2022-05-03 | 中厦建设有限公司 | Supporting steel pipe column for deep foundation pit reverse construction method and machining process thereof |
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