CN203507830U - Dielectrophoresis flat permeable membrane element - Google Patents
Dielectrophoresis flat permeable membrane element Download PDFInfo
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- CN203507830U CN203507830U CN201320560084.5U CN201320560084U CN203507830U CN 203507830 U CN203507830 U CN 203507830U CN 201320560084 U CN201320560084 U CN 201320560084U CN 203507830 U CN203507830 U CN 203507830U
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Abstract
The utility model relates to a dielectrophoresis flat permeable membrane element. The dielectrophoresis flat permeable membrane element comprises a flat skeleton, electrodes and a permeable membrane, wherein the flat skeleton is made of ABS (acrylonitrile butadiene styrene), electrodes are uniformly transversely embedded inside the flat skeleton at intervals, the permeable membrane is respectively installed on the front surface and the rear surface of the flat skeleton in a press injection manner, the flat skeleton is provided with a clean water gap and an electric wire output port, the clean water gap is communicated with a water passage inside the flat skeleton, and the electric wire output port is connected with the electrodes of the flat skeleton and led out to be connected with an external power supply. By adopting the dielectrophoresis technology and utilizing the principle that the dielectric polarization capacity of solid particles is different from that of the continuous phase in which the solid particles are suspended, the solid particles are pushed by the dielectrophoresis to be away from the electrodes or the solid particles are adsorbed onto the electrodes, so that the membrane pollution and membrane blocking phenomenon in the permeable membrane process can be eliminated, the service life of the permeable membrane is prolonged, the permeation quantity of the permeable membrane is increased, and the permeable membrane process is enhanced.
Description
Technical field
The utility model belongs to separation technology field, relates to the isolated by filtration technique of heterogeneous (solid-liquid, solid and gas, liquid liquid) permeable membrane, the dull and stereotyped permeable membrane device of especially a kind of dielectrophoresis.
Background technology
Permeable membrane isolation technics is easy to operate due to it in nearly 30 years, process equipment is compact, separative efficiency is high, the separated important process method of low power consumption and other advantages heterogeneous in developing rapidly and becoming industry (mainly in solid-liquid, solid and gas and liquid liquid etc.).Yet in permeable membrane filtering technique, film pollutes this inevitable problem and exists all the time, and become the fatal shortcoming of this technique in practical application.Film pollute be due in film surface and fenestra due to the deposition of particulate, colloidal particle, solute molecule or bacterium, virus etc. or multiply the Pore Blocking causing or diminish, caused the increase of membrane resistance, thereby film transit dose is declined, reduce the consequences such as service life of film.For example, the surpass/microfiltration membranes of often using in Separation of Solid and Liquid, its film transit dose is because film pollution meeting reduces approximately 50% after the work of nearly one hour; And due to absorption and the obstruction of solid granule, this pollution is even not reversible.Nanofiltration is separated for liquid liquid with reverse osmosis membrane etc., the gel layer producing due to concentration polarization can form on film surface a layer thoroughly, thereby greatly increased membrane resistance and seen through the requirement of pressing, this film pollutes and can be cleaned and be removed by film, is called reversible membrane fouling.
Industrially through being commonly used to clean the method that film pollutes, be mainly divided into physical cleaning and Chemical cleaning, Chemical cleaning is by making with medicament insoluble pollutant is dissolved and flush out membrane module.Yet Chemical cleaning not only increases the running cost of filtering technique due to the use of medicament, and due to the use of acidity or basic agent, film is caused damage and polluted.Physical cleaning mainly comprises the methods such as the cleaning of low pressure high flow rate, isobaric flushing, backwash, negative pressure cleaning, mechanical curettage, and what in industry, generally use is high speed backwash and air-water backwashing technique.Yet, above-mentioned two kinds of techniques all must be in cleaning process stopper film filtering technique, and need high pressure and higher than the water of two to three times of aquifer yields for rinsing, consume energy high, water consumption is large.
Ultrasonic wave is considered to realize a method that prevents that film from polluting.Yet, erosion and the destruction of permeable membrane being caused due to high-strength ultrasonic, and huge ultrasonic wave generation system has hindered it in industrial application.Electron-osmosis film based on principle of electrophoresis in last century the seventies by propositions such as Manegold, and confirm by experiment its feasibility by Henry etc.Yet this method is unsuitable for the industrial condition for polyion complexity, and its high energy consumption has also hindered it in industrial being widely used.In addition, bare electrode the use of electrophoresis also improved short circuit may and the danger of electric shock, and the electrochemical reaction occurring on electrode not only can cause the variation of pH value, can generate even the chemical by-products of poisonous or contaminated environment.
Dull and stereotyped permeable membrane is often used in bioreactor for filtering out the reactant in the thing that is suspended, the especially biological processor of waste water.Conventional osmosis membrane bioreactor is often suspended thing by these and stops up, so conventionally the lip-deep thing that is suspended of permeable membrane is removed by the bubble that uses plane gas to produce at reactor bottom.Yet this technique not only energy consumption is high, and its treatment effeciency is very low.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art part, provide a kind of dielectrophoresis dull and stereotyped permeable membrane device, thereby this element closes on the dielectrophoresis force of permeable membrane surface solid particle and is moved apart permeable membrane surface and reduce and even eliminate the film occurring pollute and block up film phenomenon in permeable membrane technique by being applied to, to extend permeable membrane service life and to improve operating efficiency and the aquifer yield of permeable membrane.
The purpose of this utility model is achieved through the following technical solutions:
The dull and stereotyped permeable membrane device of a kind of dielectrophoresis, comprise dull and stereotyped skeleton, electrode and permeable membrane, it is characterized in that: described dull and stereotyped skeleton adopts ABS to make, in dull and stereotyped skeleton, horizontal uniform interval is installed with electrode, on the forward and backward two sides of dull and stereotyped skeleton, adopt compression moulding mode that permeable membrane is installed, be provided with water purification mouth and electric wire delivery outlet on dull and stereotyped skeleton, water purification mouth is communicated with dull and stereotyped intraskeletal water channel, electric wire delivery outlet is connected with the electrode of dull and stereotyped skeleton, and draws the extraneous power supply of connection.
And described electrode adopts cylindrical interdigital electrode structure, in every pair of electrode, an electrode adopts insulating electrode, and another root electrode adopts the bare electrode of anticorrosive.
Advantage of the present utility model and good effect are:
1, the utility model is used dielectrophoresis technology, the different principle of continuous phase dielectric polarization ability of utilizing solia particle to suspend from it, dielectrophoresis force pushes away electrode by solia particle or solia particle is adsorbed on electrode, reduce and even eliminate the film pollution occurring in permeable membrane technique and block up film phenomenon, improve permeable membrane service life, improve permeable membrane film transit dose, reach strengthening permeable membrane technique.
2, the utility model is used dielectrophoresis technology, both eliminated the problem that film pollutes, and energy consumption is low, and running cost is low, compares with the backwashing technology that industry is often used, and dielectrophoresis strengthens the use of film without the work that stops permeable membrane filtering technique.
3, the utility model can be when keeping the normal work of permeable membrane filtering technique, need not add additional material for example chemical agent or a large amount of water, can reduce the film even eliminated in permeable membrane filtering technique and pollute and block up the problem that film phenomenon causes film reduces service life and film transit dose declines, reduce and reduce and energy and cost that the pollution problem of elimination permeable membrane consumes.
4, the utility model adopts cylindrical interdigital electrode structure, and circular surface maximizes interdigital electrode forceful electric power scene, uses minimal material, obtains stronger dielectrophoresis force.
5, the electrode that the utility model is used, an electrode adopts insulating electrode, and another root adopts the bare electrode of anticorrosive, to reduce energy consumption and electrode production cost.
Accompanying drawing explanation
Fig. 1 is the structural front view of the dull and stereotyped permeable membrane device of the utility model;
Fig. 2 is that the A-A of Fig. 1 is to cross-sectional view;
Fig. 3 is the B portion structure enlarged diagram of Fig. 1;
Fig. 4 is the C portion structure enlarged diagram of Fig. 2;
Fig. 5 is the utility model dielectrophoresis permeable membrane device operation principle schematic diagram.
The specific embodiment
Below by the drawings and specific embodiments, the utility model is described in further detail, but the utility model is not limited to following embodiment, and any change of making in the present embodiment principle or replacement scheme all fall among the claimed scope of the utility model.
The dull and stereotyped permeable membrane device of a kind of dielectrophoresis, as shown in Figure 1, 2, comprise dull and stereotyped skeleton 1, electrode 6 and permeable membrane 4, dull and stereotyped skeleton adopts ABS to make, in dull and stereotyped skeleton, horizontal uniform interval is installed with electrode, on the forward and backward two sides of dull and stereotyped skeleton, adopts compression moulding mode that permeable membrane is installed.Electrode adopts cylindrical interdigital electrode structure, and in every pair of electrode, an electrode adopts insulating electrode, and another root electrode adopts the bare electrode of anticorrosive, to reduce energy consumption and electrode production cost.The Sandwich Plates structure that the mounting structure of dull and stereotyped skeleton and permeable membrane is replaceable permeable membrane, replaceable when permeable membrane is damaged, structural detail recycling.On dull and stereotyped skeleton, be provided with water purification mouth 2 and electric wire delivery outlet 3, water purification mouth is communicated with dull and stereotyped intraskeletal water channel 5, and electric wire delivery outlet is connected with the electrode of dull and stereotyped skeleton, and draws the extraneous power supply of connection.
The course of work of the present utility model is:
The related permeable membrane device of the utility model is soaked in to be needed in waste water to be processed, and due to respect to water and lower dielectric polarization ability, solid particle is usually expressed as negative dielectrophoresis character in waste water; In unshapeliness electric field, solid particle is moved to weak electric field direction.As shown in Figure 5, waste water is through the surface of permeable membrane, and the interdigital electrode of installing on the dull and stereotyped skeleton in permeable membrane provides dielectrophoresis force required unshapeliness electric field.Distinctive circular surface maximizes the forceful electric power scene of interdigital electrode, thereby uses material still less, but can obtain stronger dielectrophoresis force.When in waste water, solid particle is near permeable membrane, when the interdigital electrode, will be moved apart and cannot be near permeable membrane, so minimizing is even eliminated film and is polluted and block up film and must occur; Water enters by permeable membrane in the water channel of dull and stereotyped skeleton and obtains water purification, and water purification is discharged by water purification mouth.
Related dielectrophoresis concept and the operation principle of the utility model is:
Dielectrophoresis (Dielectrophoresis) technology has successfully been applied to, and biomedical industries is next separated, richness is amassed, catch particulate and cell.This technical description be the neutral corpuscle that is positioned at non-well-balanced electric field due to translational motion that the effect of dielectric polarization produces.Be created in dipole moment on particulate can be by two identical carried charges but opposite polarity electric charge represent, when they during mal-distribution, produce a macroscopical dipole moment on particulate interface.When this dipole moment is arranged in unshapeliness electric field, in the difference of the local electric field strength on particulate both sides, produce a clean power, be called dielectrophoresis force.Because the particulate being suspended in medium has different dielectric properties (dielectric constant) from medium; particulate can by or the direction of stronger electric-field intensity move; be called positive dielectrophoresis, or the direction of more weak electric-field intensity moves, be referred to as negative dielectrophoresis.
No matter be at permeable membrane isolated by filtration solid-liquid, the separated permeable membrane that solid and gas or liquid liquid occur in mixing mutually pollutes, and is all solia particle (particulate, colloidal particles, solute crystalline solid, bacterium, and insoluble organic matter drop and larger molecular organics) with respect to continuous phase (liquid or gas), exist.In such a system, the dielectric polarization ability of the continuous phase suspending from it due to solia particle different, dielectrophoresis force pushes away electrode by solia particle or solia particle is adsorbed on electrode, shows or negative dielectrophoresis character or positive dielectrophoresis character.
Due to respect to water and lower dielectric polarization ability, solid particle is usually expressed as negative dielectrophoresis character in waste water; In unshapeliness electric field, solid particle is moved to weak electric field direction.As shown in figure mono-, waste water is through the surface of permeable membrane, and the interdigital electrode of installing under permeable membrane provides dielectrophoresis force required unshapeliness electric field.Distinctive circular surface maximizes the forceful electric power scene of interdigital electrode, thereby uses material still less, but can obtain stronger dielectrophoresis force.So permeable membrane is arranged on the surface of interdigital electrode, when solid particle is during near permeable membrane, during near interdigital electrode, will be moved apart and cannot be near permeable membrane, so minimizing is even eliminated film and is polluted and block up film and must occur.
Claims (2)
1. the dull and stereotyped permeable membrane device of a dielectrophoresis, comprise dull and stereotyped skeleton, electrode and permeable membrane, it is characterized in that: described dull and stereotyped skeleton adopts ABS to make, in dull and stereotyped skeleton, horizontal uniform interval is installed with electrode, on the forward and backward two sides of dull and stereotyped skeleton, adopt compression moulding mode that permeable membrane is installed, be provided with water purification mouth and electric wire delivery outlet on dull and stereotyped skeleton, water purification mouth is communicated with dull and stereotyped intraskeletal water channel, electric wire delivery outlet is connected with the electrode of dull and stereotyped skeleton, and draws the extraneous power supply of connection.
2. the dull and stereotyped permeable membrane device of dielectrophoresis according to claim 1, is characterized in that: described electrode adopts cylindrical interdigital electrode structure, and in every pair of electrode, an electrode adopts insulating electrode, and another root electrode adopts the bare electrode of anticorrosive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320560084.5U CN203507830U (en) | 2013-09-10 | 2013-09-10 | Dielectrophoresis flat permeable membrane element |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320560084.5U CN203507830U (en) | 2013-09-10 | 2013-09-10 | Dielectrophoresis flat permeable membrane element |
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| CN203507830U true CN203507830U (en) | 2014-04-02 |
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| CN201320560084.5U Withdrawn - After Issue CN203507830U (en) | 2013-09-10 | 2013-09-10 | Dielectrophoresis flat permeable membrane element |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103463986A (en) * | 2013-09-10 | 2013-12-25 | 内蒙古天一环境技术有限公司 | Dielectrophoresis flat osmotic membrane element |
| CN106512743A (en) * | 2015-09-15 | 2017-03-22 | 内蒙古天环境技术有限公司 | Flat-sheet osmotic membrane element using novel dielectrophoresis electrodes |
-
2013
- 2013-09-10 CN CN201320560084.5U patent/CN203507830U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103463986A (en) * | 2013-09-10 | 2013-12-25 | 内蒙古天一环境技术有限公司 | Dielectrophoresis flat osmotic membrane element |
| CN103463986B (en) * | 2013-09-10 | 2015-08-19 | 内蒙古天一环境技术有限公司 | The dull and stereotyped permeable membrane device of a kind of dielectrophoresis |
| CN106512743A (en) * | 2015-09-15 | 2017-03-22 | 内蒙古天环境技术有限公司 | Flat-sheet osmotic membrane element using novel dielectrophoresis electrodes |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140402 Effective date of abandoning: 20150819 |
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| RGAV | Abandon patent right to avoid regrant |