CN104667754A - Dielectrophoresis in-line type membrane assembly - Google Patents
Dielectrophoresis in-line type membrane assembly Download PDFInfo
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- CN104667754A CN104667754A CN201510068037.2A CN201510068037A CN104667754A CN 104667754 A CN104667754 A CN 104667754A CN 201510068037 A CN201510068037 A CN 201510068037A CN 104667754 A CN104667754 A CN 104667754A
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- line arrangement
- dielectrophoresis
- lamina membranacea
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Abstract
The invention relates to a dielectrophoresis in-line type membrane assembly which is characterized by mainly comprising a front end surface pressing plate, a rear end surface pressing plate, in-line type membrane plates, filtering membranes and electrodes, wherein a group of in-line type membrane plates is arranged in parallel between the front end surface pressing plate and the rear end surface pressing plate, and a sealing cavity is formed; the in-line type membrane plates are of frame structures; the electrodes are transversely and uniformly arranged in the in-line type membrane plates; the filtering membranes are fixedly arranged on two sides of the in-line type membrane plates; water producing cavities are formed between the filtering membranes on two sides of the in-line type membrane plates; a water flow channel is formed between two adjacent in-line type membrane plates; a water inlet communicated with the water flow channel is formed in the lower part of each in-line type membrane plate; a concentrated water outlet and a water producing outlet are formed in the upper part of each in-line type membrane plate; each concentrated water outlet is communicated with the water flow channel; and each water producing outlet corresponds to the upper part of each water producing cavity. The dielectrophoresis in-line type membrane assembly disclosed by the invention is scientific and reasonable in structural design, has an effect of enhancing the membrane separation process, can avoid the water pool limitation and can operate under positive pressure, and the dielectrophoresis technology is combined with a membrane filtration technology,.
Description
Technical field
The present invention relates to osmosis membrane filters separator, particularly a kind of dielectrophoresis in-line arrangement membrane module.
Background technology
UF membrane occurs in 20 beginnings of the century, the separation technology emerged rapidly after the sixties in 20th century.Membrane separation technique is owing to having separation, concentrated, purifying and refining function concurrently, there are again efficient, energy-saving and environmental protection, molecule level is filtered and filter process is simple, be easy to the features such as control, therefore, food, medicine, biology, environmental protection, chemical industry, metallurgy, the energy, oil, water treatment, electronics, the field such as bionical are widely used in, create huge economic benefit and social benefit, become one of most important means in current separation science.
Membrane component is divided into Flat Membrane, tubular membrane, hollow-fibre membrane and rolled film by shape, Flat Membrane is as a kind of form of membrane module, have that HYDRODYNAMIC CONDITION RELATING TO is easy to control, aquifer yield is large, contamination resistance is strong and the feature such as cleaned and changed convenience, can in more stable operation.But at present flat membrane component mostly is the working forms of immersion, negative-pressure ward, and for the stifled way cleaning taking backwash, aeration and Chemical cleaning of face dirt, damage face like this, and exist and pollute.Therefore, flat membrane component can not depart from pond, can not add malleation infiltration and face easily by problem that dirt is blocked up.
Summary of the invention
The object of the invention is to be to overcome the deficiencies in the prior art, a kind of dielectrophoresis in-line arrangement membrane module is provided, there is reinforced film separating technology effect, pond restriction can be departed from, and can run under positive pressure.
The present invention solves its technical problem and is achieved through the following technical solutions:
A kind of dielectrophoresis in-line arrangement membrane module, it is characterized in that: primarily of front end face pressing plate, rear end face pressing plate, in-line arrangement lamina membranacea, filter membrane and electrode are formed, between front end face pressing plate and rear end face pressing plate, press-fit one group of in-line arrangement lamina membranacea side by side and form seal chamber, in-line arrangement lamina membranacea is frame-shaped construction, all horizontal evenly installing electrodes in each in-line arrangement lamina membranacea, filter membrane is fixedly mounted with in the both sides of in-line arrangement lamina membranacea, formed between in-line arrangement lamina membranacea double-side filtering film and produce water cavity, water stream channel is formed between adjacent straight column lamina membranacea, the bottom of each in-line arrangement lamina membranacea is shaped with the water inlet be communicated with water stream channel, be shaped with dense water out on the top of in-line arrangement lamina membranacea and produce water out, dense water out is communicated with water stream channel, produce water out correspondence and produce water cavity top.
And, described electrode adopts multipair cylindrical interdigital electrode, be connected with positive terminal after the anode electrode parallel connection of often pair of cylindrical interdigital electrode, be connected with negative terminal after the negative electrode parallel connection of often pair of cylindrical interdigital electrode, this positive terminal and negative terminal are arranged at the bottom of in-line arrangement lamina membranacea.
And two side frame bodies of described in-line arrangement lamina membranacea are shaped with electrode draw-in groove, the both ends of described cylindrical interdigital electrode are flush-mounted in this electrode draw-in groove.
And electrode adopts stainless steel cold drawn wire to make, and external diameter is 1 ~ 5mm, is preferably 2mm.
And, all adopt the sealing gasket being positioned at peripheral part to seal between described each in-line arrangement lamina membranacea.
And described in-line arrangement lamina membranacea water inlet is shaped with water-flow equation runner, dense water out goes out to be shaped with current and collects runner.
And the thickness of in-line arrangement lamina membranacea is 5 ~ 10mm, is preferably 8mm.
And described filter membrane is fixed on in-line arrangement lamina membranacea both sides by welding manner, and form the product water cavity of hermetically-sealed construction.
And described electrode seal contact installing electrodes shell fragment, extraneous power supply, by binding post and the conducting of electrode shell fragment, realizes power supply and is communicated with electrode.
And, between front end face pressing plate and in-line arrangement diaphragm, front console is installed, rear end panel is installed between rear end face pressing plate and in-line arrangement diaphragm.
Advantage of the present invention and beneficial effect are:
1, in-line arrangement membrane module of the present invention, inner self formation water stream channel and closed cavity, enable membrane module run under positive pressure, solve the difficult problem that plate film assembly can only carry out negative-pressure ward operation.
2, in-line arrangement membrane module of the present invention, self integrated inlet and outlet channel, integration degree is high, saves floor occupying area, and effectively increases the loading density of membrane component.
3, in-line arrangement membrane module of the present invention, use dielectrophoresis technology, the dielectric polarization ability of the liquid suspended according to solia particle and its different, solia particle is pushed away electrode or is adsorbed on electrode by solia particle by dielectrophoresis force, slow down the concentration polarization phenomenon even avoided in Flat Membrane separating technology thus, to reach reinforced film filtering technique.
4, in-line arrangement membrane module of the present invention, apply dielectrophoresis force moved apart film surface in the solid particle closing on Flat Membrane surface thus reach and prevent fouling membrane and stifled film, improve film transit dose, slow down and even avoid concentration polarization, with prolonging service lifetime of film and the operating efficiency and the aquifer yield that improve film.
5, in-line arrangement membrane module of the present invention, use dielectrophoresis technology, under electric field action, during solid, liquid contact, solia particle surface can produce electric charge, and these surface charges affect the ion distribution in solution conversely, form electric double layer, form electroosmotic effect, increase film transit dose, to reach reinforced film filtering technique.
6, in-line arrangement membrane module of the present invention, electrode adopt cylindrical interdigitated electrode structure, circular surface makes interdigital electrode forceful electric power scene maximize, use minimal material, obtain stronger dielectrophoresis force.
7, scientific structure design of the present invention is reasonable, dielectrophoresis technology is combined with membrane filtration technique, has reinforced film separating technology effect, can depart from pond restriction, and can run under positive pressure.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention (stereogram);
Fig. 2 is that the A-A of Fig. 1 is to cross-sectional view;
Fig. 3 is the structure enlarged diagram of in-line arrangement lamina membranacea;
Fig. 4 is the B portion enlarged drawing of Fig. 3;
Fig. 5 is operation principle schematic diagram of the present invention.
Description of reference numerals
1-rear end face pressing plate, 2-in-line arrangement lamina membranacea, 3-front end face pressing plate, the dense water out of 4-, 5-product water out, 6-attaching plug, 7-water inlet, 8-rear end panel, 9-front console, 10-sealing gasket, 11-filter membrane, 12-electrode, 13-electrode draw-in groove, 14-electrode shell fragment, 15-pull bar, 16-binding post, 17-water-flow equation runner, 18-parallel wire, 19-current collect runner, 20-produces water cavity, 21-water stream channel.
Detailed description of the invention
Below by specific embodiment, the invention will be further described, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
A kind of dielectrophoresis in-line arrangement membrane module, it is formed primarily of front end face pressing plate 3, rear end face pressing plate 1, in-line arrangement lamina membranacea 2, filter membrane 11 and electrode 12, between front end face pressing plate and rear end face pressing plate, press-fit one group of in-line arrangement lamina membranacea side by side and form seal chamber, between each in-line arrangement lamina membranacea, all adopting the sealing gasket 10 being positioned at peripheral part to seal.Front console 9 is installed between front end face pressing plate and in-line arrangement diaphragm, rear end panel 8 is installed between rear end face pressing plate and in-line arrangement diaphragm.Front console, rear end panel adopt insulating materials liner plate.Front end face pressing plate, front console, in-line arrangement lamina membranacea, rear end panel, rear end face pressing plate closed assembly adopt pull bar 15 to fix successively.
In-line arrangement lamina membranacea is frame-shaped construction, all horizontal evenly installing electrodes in each in-line arrangement lamina membranacea.Filter membrane is fixedly mounted with in the both sides of in-line arrangement lamina membranacea, filter membrane is fixed on in-line arrangement lamina membranacea both sides by welding manner, the product water cavity 20 of hermetically-sealed construction is formed between in-line arrangement lamina membranacea double-side filtering film, water stream channel 21 is formed between adjacent straight column lamina membranacea, the bottom of each in-line arrangement lamina membranacea is shaped with the water inlet 7 be communicated with water stream channel, be shaped with dense water out 4 on the top of in-line arrangement lamina membranacea and produce water out 5, dense water out is communicated with water stream channel, produces water out correspondence and produces water cavity top.Front end face pressing plate be shaped with attaching plug 6 and the water inlet corresponding with in-line arrangement lamina membranacea, dense water out and produce water out.
Electrode adopts multipair cylindrical interdigital electrode, is connected after anode electrode employing parallel wire 18 parallel connection of often pair of cylindrical interdigital electrode with positive terminal.Be connected with negative terminal after the negative electrode parallel connection of often pair of cylindrical interdigital electrode, this positive terminal and negative terminal are arranged at the bottom of in-line arrangement lamina membranacea.Anode electrode and negative electrode are formed alternately to be arranged.
Electrode anode binding post and negative terminal equal close contact installing electrodes shell fragment 14, electrode shell fragment one end closely press-fits in electrode parallel wire end.Extraneous power supply, by binding post 16 and the conducting of electrode shell fragment, realizes power supply and is communicated with electrode.Two side frame bodies of in-line arrangement lamina membranacea are shaped with electrode draw-in groove 13, and the both ends of cylindrical interdigital electrode are flush-mounted in this electrode draw-in groove.Electrode adopts stainless steel cold drawn wire to make, and external diameter is 1 ~ 5mm, is preferably 2mm.
In-line arrangement lamina membranacea water inlet is shaped with water-flow equation runner 17, and dense water out goes out to be shaped with current and collects runner 19.The thickness of in-line arrangement lamina membranacea is 5 ~ 10mm, is preferably 8mm.
The course of work of the present invention is:
Former water enters membrane module inside by water inlet, the water-flow equation runner entered respectively on every sheet in-line arrangement lamina membranacea is distributed to film surface, under the effect of pressure and electric field, produce water and enter product water cavity through film, collecting by producing the mouth of a river, finally flowing out membrane module by product water out, the waste water after concentrated is along the flowing of film surface, collect runner through current and enter concentrated water spout, flow out membrane module through dense water out.Electrode is communicated with binding post by electrode shell fragment, and binding post is connected with attaching plug by the wiring construction in front end face pressing plate, reaches the effect that electrode is communicated with extraneous power supply.
Dielectrophoresis concept involved in the present invention and operation principle are:
Dielectrophoresis (Dielectrophoresis) technology has successfully been applied to biomedical industries to be separated, richness is amassed, catch particulate and cell.What this technology described is the translational motion that the neutral corpuscle being positioned at non-well-balanced electric field produces due to the effect of dielectric polarization, produce dipole moment on particulate can by two identical carried charges but opposite polarity electric charge represent.When they are on particle interface during mal-distribution, produce a macroscopical dipole moment.When this dipole moment is arranged in unshapeliness electric field, produce a resulting net force in the difference of the local electric field strength on particulate both sides, be called dielectrophoresis force.Because the particulate be 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 is moved, be referred to as negative dielectrophoresis.
The separation permeable membrane that occurs in membrane filtration parting liquid liquid pollutes, and is all solia particle (particulate, colloidal particles, solute crystalline solid, bacterium, and insoluble organic matter drop and larger molecular organics exist relative to liquid.In such a system, the dielectric polarization ability of the liquid suspended due to solia particle and its different, solia particle is pushed away electrode or is adsorbed on electrode by solia particle by dielectrophoresis force, shows or negative dielectrophoresis character or positive dielectrophoresis character.
Due to the dielectric polarization ability lower relative to water, solid particle is usually expressed as negative dielectrophoresis character in waste water; Namely, in unshapeliness electric field, solid particle is moved by weak electric field direction.As shown in Figure 5, waste water (material liquid) is through the surface of film, and the electrode installed under film provides the electric field of the unshapeliness needed for dielectrophoresis force.When solid particle is near film, namely when interdigital electrode, will cannot near film by moving apart.The generation of fouling membrane and stifled film is even eliminated in minimizing like this.
As above, due to the dielectric polarization ability lower relative to water, solid particle is usually expressed as negative dielectrophoresis character to principle in waste water (material liquid); Namely, in unshapeliness electric field, solid particle is moved by weak electric field direction.While water flows to driving liquid side from material liquid side through film, solute in material liquid moves apart and cannot near film by dielectrophoretic force, solute can not at film surface enrichment, so slow down and even avoid because water is from material liquid effluent to the concentration polarization phenomenon driving liquid side to cause in Flat Membrane separating technology, raising water transit dose.
Although disclose embodiments of the invention and accompanying drawing for the purpose of illustration, but it will be appreciated by those skilled in the art that: in the spirit and scope not departing from the present invention and claims, various replacement, change and amendment are all possible, therefore, scope of the present invention is not limited to the content disclosed in embodiment and accompanying drawing.
Claims (10)
1. a dielectrophoresis in-line arrangement membrane module, it is characterized in that: primarily of front end face pressing plate, rear end face pressing plate, in-line arrangement lamina membranacea, filter membrane and electrode are formed, between front end face pressing plate and rear end face pressing plate, press-fit one group of in-line arrangement lamina membranacea side by side and form seal chamber, in-line arrangement lamina membranacea is frame-shaped construction, all horizontal evenly installing electrodes in each in-line arrangement lamina membranacea, filter membrane is fixedly mounted with in the both sides of in-line arrangement lamina membranacea, formed between in-line arrangement lamina membranacea double-side filtering film and produce water cavity, water stream channel is formed between adjacent straight column lamina membranacea, the bottom of each in-line arrangement lamina membranacea is shaped with the water inlet be communicated with water stream channel, be shaped with dense water out on the top of in-line arrangement lamina membranacea and produce water out, dense water out is communicated with water stream channel, produce water out correspondence and produce water cavity top.
2. dielectrophoresis in-line arrangement membrane module according to claim 1, it is characterized in that: described electrode adopts multipair cylindrical interdigital electrode, be connected with positive terminal after the anode electrode parallel connection of often pair of cylindrical interdigital electrode, be connected with negative terminal after the negative electrode parallel connection of often pair of cylindrical interdigital electrode, this positive terminal and negative terminal are arranged at the bottom of in-line arrangement lamina membranacea.
3. dielectrophoresis in-line arrangement membrane module according to claim 1, is characterized in that: two side frame bodies of described in-line arrangement lamina membranacea are shaped with electrode draw-in groove, the both ends of described cylindrical interdigital electrode are flush-mounted in this electrode draw-in groove.
4. dielectrophoresis in-line arrangement membrane module according to claim 1, is characterized in that: electrode adopts stainless steel cold drawn wire to make, and external diameter is 1 ~ 5mm, is preferably 2mm.
5. dielectrophoresis in-line arrangement membrane module according to claim 1, is characterized in that: all adopt the sealing gasket being positioned at peripheral part to seal between described each in-line arrangement lamina membranacea.
6. dielectrophoresis in-line arrangement membrane module according to claim 1, is characterized in that: described in-line arrangement lamina membranacea water inlet is shaped with water-flow equation runner, and dense water out goes out to be shaped with current and collects runner.
7. dielectrophoresis in-line arrangement membrane module according to claim 1, is characterized in that: the thickness of in-line arrangement lamina membranacea is 5 ~ 10mm, is preferably 8mm.
8. dielectrophoresis in-line arrangement membrane module according to claim 1, is characterized in that: described filter membrane is fixed on in-line arrangement lamina membranacea both sides by welding manner, and forms the product water cavity of hermetically-sealed construction.
9. dielectrophoresis in-line arrangement membrane module according to claim 1, is characterized in that: described electrode seal contact installing electrodes shell fragment, extraneous power supply, by binding post and the conducting of electrode shell fragment, realizes power supply and is communicated with electrode.
10. dielectrophoresis in-line arrangement membrane module according to claim 1, is characterized in that: between front end face pressing plate and in-line arrangement diaphragm, install front console, installs rear end panel between rear end face pressing plate and in-line arrangement diaphragm.
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| CN201510068037.2A CN104667754B (en) | 2015-02-10 | 2015-02-10 | Dielectrophoresis in-line type membrane assembly |
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| CN201510068037.2A CN104667754B (en) | 2015-02-10 | 2015-02-10 | Dielectrophoresis in-line type membrane assembly |
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Cited By (5)
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| CN105502818A (en) * | 2015-12-11 | 2016-04-20 | 凯天环保科技股份有限公司 | Membrane component and MBR (Membrane Biological Reaction) system applying same |
| CN105688675A (en) * | 2016-03-23 | 2016-06-22 | 内蒙古天环境技术有限公司 | In-line membrane stack utilizing columnar dielectrophoresis electrodes |
| CN106517447A (en) * | 2015-09-15 | 2017-03-22 | 内蒙古天环境技术有限公司 | In-line type membrane stack capable of realizing self purification |
| CN106565042A (en) * | 2015-10-13 | 2017-04-19 | 内蒙古天环境技术有限公司 | A vehicle-loaded integrated water purification unit |
| CN106698799A (en) * | 2015-11-13 | 2017-05-24 | 内蒙古天环境技术有限公司 | Intelligent safe water supply system |
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Granted publication date: 20170111 Termination date: 20210210 |