CN102674542B - Charged membrane device for water processing and usage method of device - Google Patents
Charged membrane device for water processing and usage method of device Download PDFInfo
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- CN102674542B CN102674542B CN2012101747198A CN201210174719A CN102674542B CN 102674542 B CN102674542 B CN 102674542B CN 2012101747198 A CN2012101747198 A CN 2012101747198A CN 201210174719 A CN201210174719 A CN 201210174719A CN 102674542 B CN102674542 B CN 102674542B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/33—Wastewater or sewage treatment systems using renewable energies using wind energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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Abstract
The invention relates to a charged membrane device for water processing. The device comprises a power supply, a membrane group device and a membrane assembly, wherein the membrane group device is groove-shaped, the upper portion and the lower portion of the membrane group device are open and the periphery of the membrane group device is sealed, the membrane assembly is arranged inside the membrane group device, and the outer surface of a hollow fiber membrane wire is coated with a layer of outer tubular supporting layer having a mesh multi-hole structure to form a hollow fiber membrane. When the device is applied in an immersion type membrane separation technology, under the action of current of the power supply, the hollow fiber membrane wire is shielded by the negative electrode of the outer tubular supporting layer, and pollutants with negative electricity can hardly pollute the hollow fiber membrane under the action of electrostatic repulsive force and the flocculation of an electrode dissolution flocculating agent, so that membrane pollution is controlled. The charged membrane device having an anti-pollution function and capable of generating the flocculating agent can control membrane pollution effectively and has the advantages of being high in stain resistance, high in strength of the membrane wire, free of addition of the flocculating agent, capable of purifying water quality, practical and the like.
Description
[technical field]
The present invention relates to the charged membrane device for water treatment.More specifically, the present invention relates to a kind of charged membrane device and using method thereof that has the antipollution effect and certainly produce flocculation agent, and adopt described application of installation in the submerged membrane isolation technique.
[background technology]
Membrane bioreactor (Membrane Bio-Reactor, MBR) be membrane separation technique to be combined with the biological degradation principle and a kind of Novel sewage treatment process of developing, it utilizes membrane separation unit with the active sludge in biochemical reaction tank and larger molecular organics matter effectively catching, substitute the second pond in traditional technology, have the significant advantages such as high to contaminant removal efficiency, that effluent quality good, stable operation, convenient management, floor space are few, application prospect is very wide.But the film pollution is inevitable in the application process of film.The MBR technical research and application show, the work-ing life of membrane pollution problem shortening film, thus cause the swabbing pressure increase of pump and the increase of aeration rate to cause the process operation energy consumption higher, be restriction MBR steady running and limiting factor and the bottleneck problem applied.
Mechanism research and control device about the film pollution, some patented technologies have all been proposed both at home and abroad, but due to complicacy and the abominable of membrane technique running environment, and the film pollution mechanism still imperfectly understands so far, control method and technology are still limited, can not get effective solution.
CN 201010259595.4 proposes a kind of antifouling property of weak electric field raising film and method of flux utilized, it is to utilize same sex exclusion principle, apply weak negative electric field increase to the repulsive interaction of these pollutents near face, membrane contaminant is pushed away the film surface, therefore having the cake layer of delaying forms, increase the film antifouling property, improve flux, extend the effect of filtering the cycle of operation.This patented technology have energy consumption low, need not to apply the advantages such as high field, but there is no flocculation agent in application process, only depend on electrical forces to reach resistant to pollution effect, and the electric weight of pollutent is lower, electrical forces a little less than, membrane technique usually has aeration agitation liquid in application process in addition, and electrostatic force is easily fluctuateed, and makes like this antipollution effect unstable.
US 2010/0051542 A1 proposes a kind of Sewage treatment systems and method, this patented technology is immersion type membrane component to be put into the inner cathode of tubular electrode circle, anode can produce ferric flocculant, immersion type membrane component is at biochemical degradation, play anti-pollution under the effect of electricity flocculation and membrane filtration, it is good that this patented technology can play effluent quality, support antifilm contaminative effect, but the problem that this technology exists in application process is: use large-area tubular electrode circle that electric field is provided, make it take very large locus in film group device, bring very large inconvenience can in actual application the dismounting membrane module, be difficult to industrialization.
Can be found out by above-mentioned patented technology, improving the effective means of the antifouling property of film and flux is: electrostatic field force and flocculation agent acting in conjunction are in the film applied environment, and the feasibility with industrial application, this the present invention is proposed a kind of charged membrane device for water treatment, and this charged membrane device is the charged membrane device that has the antipollution effect and certainly produce flocculation agent.
[summary of the invention]
[technical problem that will solve]
The purpose of this invention is to provide a kind of charged membrane device for water treatment, this charged membrane device is a kind of charged membrane device that has the antipollution effect and certainly produce flocculation agent.
Another object of the present invention is that described charged membrane application of installation for water treatment is in the using method of submerged membrane isolation technique.
The another object of the present invention anodic stripping thing that to be described charged membrane device for water treatment obtain in application process in water treatment as the purposes of flocculation agent and/or water purification agent.
Charged membrane device of the present invention not only can play the effect that controlling diaphragm pollutes, can also spontaneous generation iron, the flocculation agent such as aluminium, reach the effect that purifies water outlet, and be conducive to the widespread use of membrane separation technique.
[technical scheme]
The present invention is achieved through the following technical solutions.
The present invention relates to a kind of charged membrane device for water treatment.
The charged membrane device that should be used for water treatment comprise power supply 1, MBR membrane cisterna 2, film group device 3 and by with the bonding membrane module that forms 4 of the hollow-fibre membrane 5 of outer support layer; Wherein, the film group device 3 that is positioned at MBR membrane cisterna 2 is grooved film group devices of opening up and down the surrounding sealing, and membrane module 4 is positioned at film group device 3; The described mesh structural porous structure tubulose outer support layer 6 that is coated by hollow fiber film thread 7 and its outside surface with the hollow-fibre membrane 5 of outer support layer forms, and this tubulose outer support layer 6 is formed by braiding by fiber filament and conductive wire; The cell wall of the anode of described power supply 1 and film group device 3 joins, and its negative electrode and hollow-fibre membrane 5 join.
A preferred embodiment of the invention, the material of the cell wall of film group device 3 are iron plate, aluminium sheet or the alloy sheets that both forms, and rotproofing is not passed through on the surface of above-mentioned sheet material, perhaps allows through suitable rotproofing.
According to another kind of preferred implementation of the present invention, described tubulose outer support layer 6 is formed by fiber filament and conductive wire braiding, and it is mesh structural porous structure, is coated on the surface of hollow fiber film thread 7.
According to another kind of preferred implementation of the present invention, described tubulose outer support layer 6 is to be woven by braiding machine according to following ratio by fiber filament and conductive wire to form, the part by weight of conductive wire in tubulose outer support layer 6 is 0.5-99.5wt%, and surplus is fiber filament; Fiber filament and conductive wire are with one braided wires when braiding or are different burst braided wires.
According to another kind of preferred implementation of the present invention, the fiber filament of described tubulose outer support layer 6 is one or more fiber filaments in cotton, fiber crops, hair, silk, polypropylene fibre, terylene, continuous synthetic fibre, acrylic fibers, viscose fiber, cellulose acetate, glass fibre, steel fiber.
According to another kind of preferred implementation of the present invention, the conductive wire of described tubulose outer support layer 6 is one or more conductive wires in iron, aluminium, stainless steel, titanium, platinum, palladium, ruthenium, iridium metals silk.
According to another kind of preferred implementation of the present invention, described tubulose outer support layer 6 weaves by high-speed knitter or forms by the braiding of crochet hook machine.
According to another kind of preferred implementation of the present invention, described power supply 1 is direct supply, this direct supply is to be converted to galvanic constant voltage dc source by alternating-current, or the accumulator direct current supply that is formed by sun power, wind energy, water energy, chemical energy or other Energy conversion; This power supply 1 applies electric field between described anode and negative electrode, the average current density of described tubulose outer support layer 6 is 0.5 ~ 50mA/cm
2
According to another kind of preferred implementation of the present invention, described application of installation is in the submerged membrane isolation technique, after power supply 1 is connected, film group device 3 positively chargeds, hollow-fibre membrane 5 with the outer support layer is electronegative, hollow fiber film thread 7 is among the 6 negative pole shielding of tubulose outer support layer, and electronegative pollutent is difficult to polluted membrane under the throwing out of electrostatic repulsion forces and electrode leachable surperficial, thereby controlling diaphragm pollutes.
According to another kind of preferred implementation of the present invention, the anodic stripping thing that described charged membrane device for water treatment obtains in application process as the purposes of flocculation agent and/or water purification agent, can reach the purpose that purifies water in water treatment.
Principle of the present invention is, the tubulose outer support layer 6 of having the mesh structural porous structure of one deck at the outside surface of hollow fiber film thread 7, this supporting layer is woven by braiding machine by fiber filament and conductive wire and forms, and this supporting layer not only can strengthen the tensile property of hollow fiber film thread 7 but also can be with electric charge; It is membrane module 4 that described film silk is glued according to existing MBR technology, and membrane module 4 is in the grooved film group device 3 of opening up and down the surrounding sealing, and the surrounding cell wall of film group device 3 is comprised of iron plate or aluminium sheet.Under the effect of direct supply electric current, the tubulose outer support layer 6 of hollow fiber film thread 7 is electronegative, the surrounding cell wall positively charged of film group device 3, principal pollutant in MBR membrane cisterna 2 are generally electronegative, like this in the process of membrane sepn operation, pollutent is due to the surface of electrostatic repulsion forces away from hollow fiber film thread 7, thereby play the effect that controlling diaphragm pollutes, and the film group device cell wall that is formed by iron plate and aluminium sheet due to positively charged slowly stripping become iron, aluminum ion, become flocculation agent, further play the effect that controlling diaphragm pollutes.Can regulate by controlling current valve iron and aluminum ions dissolution rate, regulate the thickness of film group device cell wall (iron plate and aluminium sheet), and then can make within the stripping erosion rate of cell wall is in film group device limit in work-ing life.
Especially, the present invention is applied to one with technology such as hollow fiber film thread, tubulose outer support enhancement layer, electrochemistry, electricity flocculations dexterously, consequently the effects such as reinforcing membrane silk tensile property, the pollution of electrostatic force controlling diaphragm, the pollution of flocculence controlling diaphragm is combined in purpose together.
To achieve these goals, the invention provides a kind of charged membrane device for water treatment, this charged membrane device is the charged membrane device with antipollution effect, it is characterized in that this device comprises power supply 1, MBR membrane cisterna 2, is positioned at the film group device 3 of MBR membrane cisterna 2 and by with the bonding membrane module that forms 4 of the hollow-fibre membrane 5 of outer support layer; Wherein, described film group device 3 is grooved film group devices of opening up and down the surrounding sealing, and membrane module 4 is positioned at film group device 3; Described hollow-fibre membrane 5 with the outer support layer is that the tubulose outer support layer 6 that the outside surface at hollow fiber film thread 7 is coated with the mesh structural porous structure of one deck forms, and this tubulose outer support layer 6 is to be formed by braiding by fiber filament and conductive wire; The cell wall of the anode of described power supply 1 and film group device 3 joins, and its negative electrode and hollow-fibre membrane 5 join.Wherein, tubulose outer support layer 6 is mesh structural porous structure, is coated on the surface of hollow fiber film thread.This supporting layer not only can strengthen the tensile property of hollow fiber film thread but also can conduct electricity.
In the present invention, power supply 1 used can be direct supply, comprising constant current direct supply and pulse dc power, can be also AC power, preferably, adopts pulse dc power.Described direct supply can be to be converted to galvanic constant voltage dc source by alternating-current, can be also the accumulator direct current supply that is formed by sun power, wind energy, water energy, chemical energy or other Energy conversion.
More preferably, apply electric field between anode and negative electrode, the average current density that makes described tubulose outer support layer is 0.5 ~ 50mA/cm
2
In the present invention, the tubulose outer support layer 6 of described mesh structural porous structure should be understood to a kind ofly can wrap up, fix hollow fiber film thread, strengthens its tensile strength, and liquid is unhinderedly flowed and durable Web materials.It is to be woven by high-speed knitter according to a certain percentage by fiber filament and conductive wire to form, and wherein the part by weight of conductive wire in tubulose outer support layer is 0.5-99.5%, and surplus is fiber filament.Fiber filament and conductive wire can also can be different burst braided wires for same burst of braided wires when braiding.
In the present invention, fiber filament in tubulose outer support layer 6 can be the natural fiber long filaments such as cotton, fiber crops, hair, silk, can be also some man-made fiber, as filament of synthetic fibre such as polypropylene fibre, terylene, continuous synthetic fibre, acrylic fibers, can also be the reproducibility fiber filaments such as viscose fiber, cellulose acetate etc., can also be the inorganic fibre classes such as glass fibre, steel fiber.
Tubulose outer support layer 6 is woven by high-speed knitter by fiber filament and conductive wire and forms, and the number of spindles of high-speed knitter is 2 ~ 32 ingots, and bipatch is 2 ~ 50mm.
Alternative optimal technical scheme is, tubulose outer support layer 6 is formed by the braiding of crochet hook machine by fiber filament and conductive wire, and the knitting density of tubulose outer support layer is 1 ~ 30 pin order, and the pin number of crochet hook machine is 1 ~ 40 pin.
Described conductive wire can form by various diameters suitable wires is stacked, such as mixing by one or more wires in the inert metal silks such as chosen from Fe, aluminium, stainless steel, titanium, platinum, palladium, ruthenium, iridium the composite filament that forms.The quantity of conductive wire is more, and the negative electrode area is larger, and electrical forces is more even, stronger.
In the present invention, the kind of hollow fiber film thread 7 is unrestricted, can be the hollow-fibre membrane that the materials such as polysulfones, polyethersulfone, polyvinylidene difluoride (PVDF), polyvinyl chloride are made, and can be also ultra-filtration membrane or microfiltration membrane.
In the present invention, in described membrane module 4, compare with membrane module length, the length surplus capacity of hollow-fibre membrane 5 can not be greater than 15cm, and preferably, should looking hollow fiber film thread, can not to contact film group device in dither process be good, its objective is to prevent from both causing short circuit.
In the present invention, the material of described film group device 3 cell walls should be iron plate or aluminium sheet or ferroaluminium sheet material, can be for the surface through antiseptic on a small quantity, can be also do not pass through any antiseptic.Surface anticorrosion will reduce the dissolution rate of anodic stripping thing (flocculation agent), and those skilled in the art as obtaining lower dissolution rate, can carry out suitable rotproofing to sheet material in the specific implementation alternatively.
In addition, the thickness of cell wall iron plate and aluminium sheet should depending on application process in the demand of flocculation agent, selected principle be film group device in work-ing life the flocculation agent total demand account for 1/10 ~ 1/3 of cell wall gross weight.
Application of installation of the present invention is in the submerged membrane isolation technique, after power connection, film group device 5 positively chargeds, hollow-fibre membrane 5 with the outer support layer is electronegative, hollow fiber film thread 7 is among the shielding of tubulose outer support layer negative pole, electronegative pollutent is difficult to polluted membrane under the throwing out of electrostatic repulsion forces and electrode leachable surperficial, thereby reaches the effect that controlling diaphragm pollutes.
The invention still further relates to the resulting anodic stripping thing of charged membrane device that adopts the present invention to have the antipollution effect and certainly produce flocculation agent can be used as flocculation agent and/or water purification agent in water treatment purposes.The same, do not repeat them here.
[beneficial effect]
Compare to relevant MBR film Pollution control technology, adopt described charged membrane device and be applied to have the following advantages in the submerged membrane isolation technique:
1, stain resistance is strong.Reach by electrostatic repulsion forces and flocculence double effects the effect that controlling diaphragm pollutes, and action intensity both all can regulate and control its power by controlling size of current.
2, intensity is high.The composite braided tubulose outer support layer that becomes of fiber filament and conductive wire can strengthen the tensile property of hollow fiber film thread, the tolerance when improving its operation, fracture of wire or the decortication phenomenon avoiding hollow fiber film thread to be in operation occurring.
3, need not to add flocculation agent.Described charged membrane device can self produce iron or aluminum ion as flocculation agent, purifies water, and institute's produce flocculant can produce instant use immediately, has avoided chemical dosing Chinese medicine to be long placed in the storage problem of easy inefficacy.
4, practical.Described charged membrane device can be widely used in the submerged membrane isolation technique, and the latticed outer support layer of hollow fiber film thread and film group device are as electrode, and electrode area is larger, and convenient operation is used, and is practical; Need not additionally to add equipment, controllability is high.
[description of drawings]
Fig. 1 is the structural representation with charged membrane device of antipollution effect of the present invention;
Fig. 2 is the cross-sectional structure schematic diagram of charged membrane;
Wherein, 1, power supply; 2, MBR membrane cisterna; 3, film group device; 4, membrane module; 5, with the hollow-fibre membrane of outer support layer; 6, tubulose porous outer support layer; 7, hollow-fibre membrane.
Fig. 3 is the running condition of hollow-fibre membrane in three kinds of charged situations with the outer support layer;
Fig. 4 is the running condition of the slot type film group device of charged membrane device when being unlike material.
[embodiment]
Following embodiment illustrates the present invention by reference to the accompanying drawings without limitation.
In the present invention; the ferro element total content of ferron or the measuring method of the phosphate concentration in solution are to write according to State Environmental Protection Administration's water and effluent monitoring analytical procedure editorial committee; " water and effluent monitoring analytical procedure " (the 4th edition; [Dan), measuring method of stipulating in China Environmental Science Press's publication (2002) is analyzed mensuration.
As shown in Figure 3, a kind of charged membrane device that has the antipollution effect and certainly produce flocculation agent mainly is comprised of power supply 1, MBR membrane cisterna 2, film group device 3, membrane module 4 parts.The present embodiment adopts the direct supply of 0-35V, and continuous current density is 10A/m
2, the wall of film group device is the iron plate of thickness 5mm, and tubulose outer support layer is formed by crocheting by polypropylene filament yarn and fine copper silk, and wherein the part by weight of fine copper silk in tubulose outer support layer is 2%, and surplus is polypropylene filament yarn.The knitting density of crocheting layer is 20 pin orders, and the pin number of crochet hook machine is 10 pins.Be applied in microfiltration membrane, namely in MBR technique, the operational conditions of membrane cisterna is that sludge concentration is 7000mg/L, and aeration rate is 90m
3/ m
2* h, the area of membrane module is 5m
2, effluent flux is 25L/m
2* h.Adopt respectively to support outside and do not apply electric current on tunic, apply positive electricity, apply in three kinds of situations such as negative electricity the running condition of observing membrane module.
Contrast and experiment can be found: be with negative electricity can obviously alleviate the operating pollution condition of membrane module on the tubulose outer support layer of hollow fiber film thread, in three kinds of situations, membrane module surface contamination situation is: electronegative membrane module〉charged membrane assembly not〉the positively charged membrane module.As seen, the described charged membrane application of installation that has the antipollution effect and certainly produce flocculation agent can significantly play resistant to pollution effect in MBR.
As shown in Figure 4, a kind of charged membrane device that has the antipollution effect and certainly produce flocculation agent mainly is comprised of power supply 1, MBR membrane cisterna 2, film group device 3, membrane module 4 parts.The present embodiment adopts the direct supply of 0-35V, and continuous current density is 5A/m
2, tubulose outer support layer is to be formed by weaving by high-speed knitter of polyester filament and copper wire, and wherein the part by weight of fine copper silk in tubulose outer support layer is 2%, and surplus is polyester filament.The number of spindles of high-speed knitter is 8 ingots, and bipatch is 25mm.Be applied in microfiltration membrane, namely in MBR technique, the operational conditions of membrane cisterna is that sludge concentration is 7000mg/L, and aeration rate is 90m
3/ m
2* h, the area of membrane module is 5m
2, effluent flux is 25L/m
2* h.Film group device adopts respectively iron plate and stainless steel plate, and wall thickness is 5mm, adopts to support outside respectively to apply negative electricity on tunic, in different film group device cell wall situations, observes the running condition of membrane module and the water quality situation of Inlet and outlet water.
Contrast and experiment can be found: in two kinds of situations, membrane module surface contamination situation is: the running condition of iron plate film group device is significantly better than the stainless steel film group device.Simultaneously, the water-quality guideline analytical results of mensuration water inlet and water outlet is shown in table 1.
Table 1: water inlet and effluent quality analytical results
| Water-quality guideline | Influent concentration (mg/L) | Go out water concentration (mg/L) | Clearance (%) |
| Chemical oxygen demand (COD) | 90.3 | 18.6 | 79.40 |
| Nitrate nitrogen | 15.8 | 2.2 | 86.08 |
| Ammonia nitrogen | 5.6 | 1.5 | 73.21 |
| Total phosphorus | 2.4 | 0.18 | 92.50 |
As shown in table 1 result, the water inlet of sewage work is after charged membrane device of the present invention, in the situation that additionally do not add flocculation agent, the nitrogen in water outlet, phosphorus and chemical oxygen demand (COD) have obviously reduced a lot, have reached discharging standards.Simultaneously, measure the content of iron in the membrane cisterna mixed solution, result shows, in the iron plate film group device, iron level is 30mg/L, and the flocculating effect of mixed solution is better; In the stainless steel film group device, iron level is 0, and mixed solution is almost without flocculating effect.This shows the iron that charged membrane device of the present invention produces, the content demand that aluminium class flocculation agent can reach water purifying flocculating agent.
This shows, the described charged membrane application of installation that has the antipollution effect and certainly produce flocculation agent can significantly play antipollution and the effect that purifies water in MBR.Its reason is electronegative pollutent very difficult polluted membrane surface under the throwing out of electrostatic repulsion forces and electrode leachable, and flocculation sediment purifies water simultaneously, and namely both acting in conjunction can obtain good preventing membrane pollution and the technique effect of water treatment simultaneously.
Claims (10)
1. charged membrane device that is used for water treatment is characterized in that this device comprises power supply (1), MBR membrane cisterna (2), film group device (3) and by the bonding membrane module that forms of hollow-fibre membrane (5) (4) with the outer support layer; Wherein, the film group device (3) that is positioned at MBR membrane cisterna (2) is the grooved film group device of opening up and down the surrounding sealing, and membrane module (4) is positioned at film group device (3); The mesh structural porous structure tubulose outer support layer (6) that described hollow-fibre membrane with the outer support layer (5) is coated by hollow fiber film thread (7) and its outside surface forms, and this tubulose outer support layer (6) is formed by braiding by fiber filament and conductive wire; The cell wall of the anode of described power supply (1) and film group device (3) joins, and its negative electrode and hollow-fibre membrane (5) join.
2. the charged membrane device for water treatment according to claim 1, the material that it is characterized in that the cell wall of film group device (3) are iron plate, aluminium sheet or the alloy sheets that both forms, and rotproofing is not passed through on the surface of above-mentioned sheet material.
3. the charged membrane device for water treatment according to claim 2, it is characterized in that described tubulose outer support layer (6) is formed by fiber filament and conductive wire braiding, it is mesh structural porous structure, is coated on the outside surface of hollow fiber film thread (7).
4. the charged membrane device for water treatment according to claim 3, it is characterized in that described tubulose outer support layer (6) is woven by braiding machine according to following ratio by fiber filament and conductive wire forms, the part by weight of conductive wire in tubulose outer support layer (6) is 0.5-99.5wt%, and surplus is fiber filament; Fiber filament and conductive wire are with one braided wires when braiding or are different burst braided wires.
5. according to claim 3 or 4 described charged membrane devices for water treatment, is characterized in that the fiber filament of described tubulose outer support layer (6) is one or more fiber filaments in cotton, fiber crops, hair, silk, polypropylene fibre, terylene, continuous synthetic fibre, acrylic fibers, viscose fiber, cellulose acetate, glass fibre, steel fiber.
6. according to claim 3 or 4 described charged membrane devices for water treatment, the conductive wire that it is characterized in that described tubulose outer support layer (6) is one or more conductive wires in iron, aluminium, stainless steel, titanium, platinum, palladium, ruthenium, iridium metals silk.
7. the charged membrane device for water treatment according to claim 1, is characterized in that described tubulose outer support layer (6) weaves by high-speed knitter or form by the braiding of crochet hook machine.
8. the charged membrane device for water treatment according to claim 1, it is characterized in that described power supply (1) is direct supply, this direct supply is to be converted to galvanic constant voltage dc source by alternating-current, or by sun power, wind energy, water energy or the converted accumulator direct current supply of chemical energy; This power supply (1) applies electric field between described anode and negative electrode, the average current density of described tubulose outer support layer (6) is 0.5～50mA/cm
2
9. the charged membrane device for water treatment according to claim 1, it is characterized in that described application of installation is in the submerged membrane isolation technique, after power supply (1) is connected, film group device (3) positively charged, hollow-fibre membrane (5) with the outer support layer is electronegative, hollow fiber film thread (7) is among the shielding of tubulose outer support layer (6) negative pole, and electronegative pollutent is difficult to polluted membrane under the throwing out of electrostatic repulsion forces and electrode leachable surperficial, thereby controlling diaphragm pollutes.
10. the charged membrane device for water treatment according to claim 1 is characterized in that anodic stripping thing that this charged membrane device the obtains purposes as flocculation agent and/or water purification agent in water treatment in application process.
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| CN105271615B (en) * | 2015-10-29 | 2018-04-24 | 长江大学 | Electrochemical copolymerization formula membrane bioreactor |
| CN105836879B (en) * | 2016-04-11 | 2018-06-05 | 同济大学 | A kind of the anaerobism conductivity ceramics membrane biological reaction apparatus and method of effective control fouling membrane |
| CN108726668A (en) * | 2017-04-18 | 2018-11-02 | 哈尔滨工业大学深圳研究生院 | A kind of membrane bio-reaction system |
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| CN112010396A (en) * | 2019-05-30 | 2020-12-01 | 西藏神州瑞霖环保科技股份有限公司 | Composite electrochemical reaction device |
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