CN106731846A - The flat plate ultrafiltration membrane module of ultrafiltration membrane modifying is carried out suitable for electric field induction - Google Patents
The flat plate ultrafiltration membrane module of ultrafiltration membrane modifying is carried out suitable for electric field induction Download PDFInfo
- Publication number
- CN106731846A CN106731846A CN201611024247.2A CN201611024247A CN106731846A CN 106731846 A CN106731846 A CN 106731846A CN 201611024247 A CN201611024247 A CN 201611024247A CN 106731846 A CN106731846 A CN 106731846A
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- China
- Prior art keywords
- ultrafiltration membrane
- silk screen
- milipore filter
- deflector
- flat plate
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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
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/145—Ultrafiltration
-
- 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
- B01D63/08—Flat membrane modules
- B01D63/087—Single membrane modules
-
- 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
- B01D67/0093—Chemical modification
-
- 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
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The flat plate ultrafiltration membrane module of ultrafiltration membrane modifying is carried out suitable for electric field induction, belongs to membrane for water treatment separation technology field.In milipore filter inner chamber, flow-guiding cloth is set, in flow-guiding cloth inner chamber, deflector is set, it is characterized in that setting graphite silk screen between flow-guiding cloth and deflector, the inner of one wire is connected electrically on graphite silk screen, the outer end of the wire is arranged on milipore filter outside, and exhalant canal is set between the deflector and water outlet mouthpiece of graphite silk screen inner chamber.Inventive film component serves as anode using graphite silk screen, and rotproofness is good, and conductive effect is good, stable performance, and is easily installed operation, with good use value.
Description
Technical field
The invention belongs to membrane for water treatment separation technology field.
Background technology
Used as a kind of new and effective water technology, the hyperfiltration technique with membrane module as core is increasingly subject to countries in the world
Concern.Hyperfiltration technique advantage is simple to operate and processing cost is relatively low, can effectively improve the performance of enterprises.Milipore filter skill
It is one of water treatment field modern age most important hot spot technology that art has turned into.Its flat sheet membranes is most widely used membrane technology
One kind, Flat Membrane generally by the geometrical clamp for clamping milipore filter, be arranged on the flow-guiding cloth of milipore filter inner chamber, be arranged on flow-guiding cloth
The deflector composition of inner chamber, the wherein existing diversion function of deflector has support function again, geometrical clamp also on water outlet mouthpiece is set,
Cavity between the water outlet mouthpiece and deflector is connected.When flat plate ultrafiltration membrane module is placed in the mixture for needing filtration treatment
When, under being acted on by the negative-pressure ward connected on water outlet mouthpiece, the filtered water after adsorbing and retain by milipore filter is passed through
Milipore filter enters deflector via flow-guiding cloth, and under the guiding of the vertical curb of deflector, filtered water is by curb by water outlet
Interface is discharged.
But fouling membrane is to limit its wide variety of key factor.In recent years, it is thus proposed that prevent film with material
The film precoated shet concept of the fine particle directly contact reduction fouling membrane in liquid, the research on reducing fouling membrane is main both at home and abroad
Concentrate on and seek the strong membrane material of contamination resistance, improve filtrability and design preferably filtering fluidised form etc. of feed liquid.Have very
Many researchs show that milipore filter precoated shet is a kind of effective improvement Membrane Filtration Flux, reduces membrane fouling rate, improves some pollutions
The technology of material removal effect.Traditional milipore filter precoated shet technology often directly forms precoated shet, this side using negative-pressure ward
The precoated shet that method is formed is combined with milipore filter to be not sufficiently stable.
Through research, the present inventor proposes a kind of modified technique of milipore filter：Negative electrical charge TiO will be contained2Painting feed liquid be placed in
In electrolytic cell, hyperfiltration membrane assembly and stainless steel plate electrode are immersed in painting feed liquid, in hyperfiltration membrane assembly and stainless steel plate electrode
Between connect dc source, be electrolysed under certain electric-field intensity, acquirement there is TiO in ultrafiltration membrane surface2Stratum granulosum changes
Property milipore filter.The method is effectively reduced fouling membrane, improves film service life.
The content of the invention
The present invention seeks to propose a kind of flat plate ultrafiltration membrane module of the modified technique suitable for above milipore filter.
The present invention includes the milipore filter clamped by geometrical clamp, and water outlet mouthpiece is set on geometrical clamp；In milipore filter inner chamber
Flow-guiding cloth is set, deflector is set in flow-guiding cloth inner chamber, it is characterised in that graphite silk screen is set between flow-guiding cloth and deflector,
The inner of one wire is connected electrically on graphite silk screen, and the outer end of the wire is arranged on milipore filter outside, in graphite silk screen inner chamber
Deflector and water outlet mouthpiece between exhalant canal is set.
When the modified technique of milipore filter is carried out, negative electrical charge TiO will be contained2Painting feed liquid be placed in electrolytic cell, this is sent out
Bright flat plate ultrafiltration membrane module is arranged in electrolytic cell, and the wire of membrane module upper end is connected with the positive pole of external dc power, graphite
Silk screen serves as anode；Two pieces of stainless steel plates are set on the outside of membrane module, and stainless steel plate is connected by wire with the negative pole of dc source
Connect, serve as negative electrode.Connect dc source, negatively charged TiO in electrolytic cell2Particle is moved under electric field action to graphite silk screen
Move, be coated on ultrafiltration membrane surface, form TiO2Particle precoated shet.
When filtering is used, under negative-pressure ward effect, raw water first passes through the precoated shet of milipore filter, and precoated shet will be to film
The colloid and larger molecular organicses for polluting its Main Function are separated with film surface.Passed through by the water after filter after absorption and retention
Milipore filter enters deflector via flow-guiding cloth, and under the guiding of the vertical curb of deflector, water after filter is by curb by water outlet
Interface is discharged.
Invention components have following obvious advantage：
1st, inventive film component serves as anode using graphite silk screen, and rotproofness is good, and conductive effect is good, stable performance.
2nd, it is of the invention under DC Electric Field, charged TiO2Can be quickly be coated to ultrafiltration membrane surface, by voltage
Certain thickness precoated shet can be very easily obtained with the regulation of precoated shet time.
3rd, the present invention relates to charged TiO2Electric field precoated shet milipore filter can effectively reduce water turbidity and Gao Meng
Hydrochlorate index, can effectively reduce fouling membrane, improve film service life.
4th, manufacturing process of the present invention is simple, it is easy to installation operation, with good use value.
Further, milipore filter of the present invention is polyvinyladine floride（PVDF）Milipore filter, normal pore size is 0.1 μm.It is poly-
Propylene is fine（PAN）Low intensity, fragility is big, and acid and alkali-resistance degree is weak；Polyether sulfone（PES）, polysulfones（PSF）Contamination resistance is poor, and
And easy fracture of wire.And Kynoar（PVDF）Percentage of elongation is high, is difficult fracture of wire, and very well, resistance tocrocking is strong for acid-fast alkali-proof, fits
Close the present invention required.In addition, under 0.1 μm of normal pore size, the permeation flux of polyvinylidene fluoride (PVDF) ultrafiltration membrane is relatively large, while
Contamination resistance is relatively preferable, is optimal selection.
The density of the graphite silk screen is 60 mesh.Under the density, graphite silk screen can not only effectively support whole membrane module,
When electrode is served as, conductive effect is good, stable performance.
The wire on the outside of milipore filter is by epoxy sealing on geometrical clamp.Using epoxy resin sealing, Gu
Electric property is superior after change, surface gloss is high, simple to operate.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the invention.
Specific embodiment
First, the introduction about the construction of flat plate ultrafiltration membrane module：
As shown in figure 1, including being clamped with milipore filter 6 by geometrical clamp 7, the milipore filter 6 is polyvinyladine floride milipore filter, nominal pore
Footpath is 0.1 μm, and geometrical clamp 7 is made up of ABS resin.
In the inner chamber of milipore filter 6, flow-guiding cloth 5 is set, in the graphite silk screen 4 that the inner chamber density of setting of flow-guiding cloth 5 is 60 mesh,
In the inner chamber of graphite silk screen 4, deflector 3 is set.
Electrically connected with the inner of one group of wire 1 in graphite silk screen 4, the middle part of wire 1 passes through the gap of deflector 3, wire 1
Outer end be arranged on the outside of milipore filter 6, then by epoxy sealing on geometrical clamp 7.
Water outlet mouthpiece 2 is set on geometrical clamp 7, is set and water outlet mouthpiece 2 between the deflector 3 of the inner chamber of graphite silk screen 4
Between connect exhalant canal 8.
Exhalant canal 8 can be made up of an interconnection and a vertical passageway, and interconnection is located on deflector 3
Side, sets curb corresponding with the gap before each deflector 3, one end of vertical passageway and interconnection on interconnection
It is connected, the other end is connected with the lower end of water outlet mouthpiece 2, so that the liquid for leaching is passed through successively by the gap before deflector 3
Curb is collected to the interconnection of exhalant canal 8, then causes water outlet mouthpiece 2 through vertical passageway.
2nd, modified technique：
1st, graininess negative electrical charge TiO is prepared2：
Under the conditions of magnetic agitation, by TiO2Be dissolved in the aqueous solution of calgon, with dilute acid for adjusting pH value 6 after, add
Neopelex, then disperses 1 hour, separated acquirement solid phase under the conditions of temperature constant magnetic stirring, is dried at 105 DEG C
It is dry 2 hours, it is ground, obtain the graininess negative electrical charge TiO that particle diameter is 0.5~1 μm2。
2nd, preparing has negative electrical charge TiO2Painting feed liquid：
Take 2g graininess negative electrical charges TiO2It is diluted in 1L pure water, is formed and contain negative electrical charge TiO2Painting feed liquid, the coating being made into
Negative electrical charge TiO in liquid2Concentration be 2g/L.
3rd, modified ultrafiltration membrane is prepared：
The painting feed liquid of preparation is placed in electrolytic cell, hyperfiltration membrane assembly and two pieces of stainless steel plate electrodes is immersed in painting feed liquid,
And two pieces of stainless steel plate electrodes is arranged symmetrically in two outsides of hyperfiltration membrane assembly.
The positive pole of dc source is connected on hyperfiltration membrane assembly, dc source is all connected on two pieces of stainless steel plate electrodes
Negative pole, more than electrolysis 10min is carried out under conditions of electric-field intensity is 30V/cm, and then venting is remaining applies feed liquid, obtains super
The ultrafiltration membrane surface of filter membrane component has TiO2The modified ultrafiltration membrane of stratum granulosum.
3rd, application test and result：
Take the modified ultrafiltration membrane component being made carries out film process into source water：The suction pump of milipore filter is opened, precoated shet is by negative
Pressure suction operation.At the end of a filter cycle, suction pump is closed, opening recoil pump carries out film backwash, and now precoated shet takes off
Fall.After backwash terminates, power-on carries out electric field precoated shet, repeats above-mentioned job step.
Claims (4)
1. being applied to electric field induction carries out the flat plate ultrafiltration membrane module of ultrafiltration membrane modifying, including the ultrafiltration clamped by geometrical clamp
Film, sets water outlet mouthpiece on geometrical clamp；Flow-guiding cloth is set in milipore filter inner chamber, deflector is set in flow-guiding cloth inner chamber, it is special
It is the setting graphite silk screen between flow-guiding cloth and deflector to levy, and the inner of a wire is connected electrically on graphite silk screen, described to lead
The outer end of line is arranged on milipore filter outside, and exhalant canal is set between the deflector and water outlet mouthpiece of graphite silk screen inner chamber.
2. flat plate ultrafiltration membrane module according to claim 1, it is characterised in that the milipore filter is polyvinyladine floride ultrafiltration
Film, normal pore size is 0.1 μm.
3. flat plate ultrafiltration membrane module according to claim 1, it is characterised in that the density of the graphite silk screen is 60 mesh.
4. flat plate ultrafiltration membrane module according to claim 1, it is characterised in that the wire on the outside of milipore filter passes through
Epoxy sealing is on geometrical clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611024247.2A CN106731846B (en) | 2016-11-22 | 2016-11-22 | The flat plate ultrafiltration membrane module for carrying out ultrafiltration membrane modifying is induced suitable for electric field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611024247.2A CN106731846B (en) | 2016-11-22 | 2016-11-22 | The flat plate ultrafiltration membrane module for carrying out ultrafiltration membrane modifying is induced suitable for electric field |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106731846A true CN106731846A (en) | 2017-05-31 |
| CN106731846B CN106731846B (en) | 2019-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611024247.2A Active CN106731846B (en) | 2016-11-22 | 2016-11-22 | The flat plate ultrafiltration membrane module for carrying out ultrafiltration membrane modifying is induced suitable for electric field |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201195700Y (en) * | 2008-04-08 | 2009-02-18 | 曹达文 | Dynamic state film supporting body for implementing water supply/wastewater treatment |
| CN102154675A (en) * | 2011-03-07 | 2011-08-17 | 南京工业大学 | Preparation method of metal ceramic composite membrane |
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2016
- 2016-11-22 CN CN201611024247.2A patent/CN106731846B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201195700Y (en) * | 2008-04-08 | 2009-02-18 | 曹达文 | Dynamic state film supporting body for implementing water supply/wastewater treatment |
| CN102154675A (en) * | 2011-03-07 | 2011-08-17 | 南京工业大学 | Preparation method of metal ceramic composite membrane |
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| CN106731846B (en) | 2019-05-24 |
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