CN103591648B - Based on air purification method and the device of membrane separation technique and water washing cleaning - Google Patents

Based on air purification method and the device of membrane separation technique and water washing cleaning Download PDF

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Publication number
CN103591648B
CN103591648B CN201310542752.6A CN201310542752A CN103591648B CN 103591648 B CN103591648 B CN 103591648B CN 201310542752 A CN201310542752 A CN 201310542752A CN 103591648 B CN103591648 B CN 103591648B
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China
Prior art keywords
air
hollow fiber
fiber film
water
water washing
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CN201310542752.6A
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Chinese (zh)
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CN103591648A (en
Inventor
邱利民
石芳芳
张�林
赵海洋
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浙江大学
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Abstract

The invention discloses a kind of air purification method based on membrane separation technique and water washing cleaning, air is introduced into hollow fiber film tube, and through the fenestra on hollow fiber film tube, retain the suspended particulate substance in separation air and large molecular organic pollutants, then water layer is passed with the form of bubble, pollutant that can be water-soluble in removing air, the air after being purified.The invention also discloses a kind of air cleaning unit based on membrane separation technique and water washing cleaning.The present invention is mainly based on UF membrane and water washing cleaning technology, and the absorption of binding activities charcoal and ultraviolet sterilization, realize the comprehensive decontamination to air in enclosure space, economize energy, noise is little.

Description

Based on air purification method and the device of membrane separation technique and water washing cleaning

Technical field

The present invention relates to technical field of air purification, particularly relate to a kind of air purification method based on membrane separation technique and water washing cleaning and device.

Background technology

Some experts claim, and after " coal smoke type ", " photochemical fog type " pollute, it is that the 3rd of mark pollutes period that modern is just entering with " room air pollution ".Modern has more than 80%, and the time of average 90% is spent in indoor, and in traditional architecture, people often adopt and outdoor air is introduced indoor draft type, improve indoor thermal comfort condition and air quality.Along with widely using of heating air conditioning, for the consideration of energy saving of system, people start the seal degree improving building, reduce resh air requirement simultaneously, cause indoor pollutant to can not get new wind and dilute and concentration rising.In addition, the pollution problem of outdoor air is also on the rise, and the pollutant in new wind, especially PM2.5 can enter human lung, very big to human health damage.

Existing air purifying process mainly contains: electrostatic precipitation technology, active carbon adsorption technology, strainer filtering technology, anion technology, the asymmetric plasma technology of low temperature, photocatalysis purifying technology etc.

The main Problems existing of prior art has: one, dedusting is not thorough, can produce secondary pollution, as electrostatic precipitation, anion technology; Two, purification process can produce harmful side product, as electrostatic precipitation, anion technology and photocatalysis purifying technology all can produce the harmful material such as ozone, nitrogen oxide.

What also have now a class air purifier to adopt is water washing cleaning, " water washing air purifier ", the number of patent application that are 201120154964.3 as number of patent application are " a kind of taper-shaped internal spiral water-absorption type rinsing air purifying device " of 200820118641.7 etc., they make air being purified by when cascade or water curtain, this clarifier produces cascade or water curtain needs at substantial power and water, and noise is very large.

Summary of the invention

For overcoming the defect existed in prior art, the invention provides a kind of air purification method based on membrane separation technique and water washing cleaning and device, on the basis of membrane separation technique and water washing cleaning air technique, and in conjunction with existing charcoal absorption and ultraviolet sterilization technology, air is comprehensively purified.

Based on an air cleaning unit for membrane separation technique and water washing cleaning, comprise the housing with air inlet and air outlet, be provided with hollow fiber film assembly in described housing, hollow fiber film assembly comprises:

Putamina, water is equipped with in inside, and top has air outlet, and this air outlet is communicated with described air outlet;

Hollow-fibre membrane is restrained, and is immersed in the water in described putamina, is made up of many hollow fiber film tubes, and one end sealing of described hollow-fibre membrane tube bank, the other end is communicated with described air inlet through putamina.

The technical solution adopted in the present invention is: by the emerging technology of chemical field---application of membrane separation technology is in purification of air, adopt hollow-fibre membrane and water acting in conjunction, hollow-fibre membrane tube bank is immersed in water, air passes into hollow-fibre membrane tube bank from side, air after hollow-fibre membrane tube bank is separated is emerged from water with the form of bubble, suspended particulate substance in air and the water-soluble gas pollutant of energy are removed, and realize the preliminary purification of air.

Preferably, be positioned at described housing, between described air outlet and air outlet, be provided with active carbon slab and ultraviolet lamp tube successively.Also there is the water-fast harmful substance of part and bacterium, virus etc. in the air after preliminary purification, active carbon slab and ultraviolet lamp tube can remove water-fast harmful substance and bacterium, virus etc. successively, and air is purified completely.

Described hollow fiber film tube is hydrophobic hollow fiber film pipe, makes water can not enter in film pipe; Be preferably Kynoar (PVDF) hollow fiber film tube, polytetrafluoroethylene (PTFE) hollow fiber film tube or polyvinyl chloride (PVC) hollow fiber film tube.

Air inlet is provided with blower fan, and blower fan is used for the introducing of air, accelerates air and enters in housing, promote purification of air speed.

Preferably, the top of described putamina is also provided with water inlet, and bottom is provided with delivery port.In use for some time, the impurity in water and harmful substance increase water in putamina, can reduce suspended particulate substance and the removal efficiency of gas pollutant that can be water-soluble, therefore, putamina set into the mouth of a river and delivery port, be convenient to the replacing of water.

One end of described hollow-fibre membrane tube bank, by epoxy sealing, also adopts epoxy sealing between other end tube and tube and between pipe and described putamina.The two ends of hollow-fibre membrane tube bank all adopt epoxy sealing, and to make air can only pass through from the fenestra tube wall, and anti-sealing enters the leakage that hollow-fibre membrane restrains water in interior and putamina.

Present invention also offers a kind of air purification method based on membrane separation technique and water washing cleaning, air is introduced into hollow fiber film tube, and through the fenestra on hollow fiber film tube, retain the suspended particulate substance in separation air and large molecular organic pollutants, then water layer is passed with the form of bubble, pollutant that can be water-soluble in removing air, the air after being purified.

Preferred further, the air after described purification irradiates through active carbon slab absorption and ultraviolet lamp tube successively, obtains the air after comprehensive decontamination.

Principle of the present invention is: the mechanism that membrane separation technique purifies air is molecule screening and Michel Knuysen diffusion.According to molecule screening mechanism, after the different mixture of molecular size contacts with film, large molecule retains, and Small molecular then by duct, thus realizes being separated.After air contacts with hollow-fibre membrane, the solid in air and the small granular suspended matters of liquid are trapped, and the Small molecular such as air then can pass through.When membrane aperture is less than the mean free path of gas molecule, the collision probability between gas molecule and hole wall is greater than intermolecular collision, and its separation principle mainly follows Michel Knuysen diffusion theory.According to Michel Knuysen diffusion theory, the square root of the speed of gas permeation fenestra molecular mass is corresponding thereto inversely proportional to, and the large molecular organic pollutants therefore in air is separated because of the less realization of its seepage velocity.Air is by forming a lot of minute bubbles being immersed in the film outer surface in water after membrane aperture, and minute bubbles uphill process fully contacts with water, and harmful substance soluble in water in air is removed.

Beneficial effect of the present invention:

The present invention is mainly based on UF membrane and water washing cleaning technology, and the absorption of binding activities charcoal and ultraviolet sterilization, realize the comprehensive decontamination to air in enclosure space.Air is by after hollow-fibre membrane, and suspended particulate substance is trapped with large molecular organic pollutants and is separated; Air is fully contacted with water by the form with bubble after membrane aperture, can be removed by water-soluble pollutant in air; The air of membrane module outlet passes through active carbon slab, the gas pollutant in active carbon slab energy absorbed air again, and can eliminate the unusual smell; The last microorgranic contaminant such as virus, bacterium killed under the irradiation of quartz burner in air.So far, the air in enclosure space is comprehensively purified.

Accompanying drawing explanation

Fig. 1 is the structural representation of air cleaning unit of the present invention;

Fig. 2 is the structural representation of hollow fiber film assembly;

Fig. 3 is the view in transverse section of Fig. 2.

In figure: 1, air inlet, 2, blower fan, 3, hollow fiber film assembly, 31, hollow-fibre membrane tube bank, 32, putamina, 33, air outlet, 34, epoxy resin, 35, water, 4, active carbon slab, 5, ultraviolet lamp tube, 6, air outlet, 7, housing.

Detailed description of the invention

As shown in Figure 1, a kind of air cleaning unit based on membrane separation technique and water washing cleaning, comprises housing 7, the hollow fiber film assembly 3 of water-filling, active carbon slab 4 and ultraviolet lamp tube 5.

Side bottom housing 7 is provided with air inlet 1, air inlet 1 place is provided with blower fan 2, air is introduced in housing 7 by blower fan 2, the hollow fiber film assembly 3 of water-filling is communicated with blower fan 2, the top of hollow fiber film assembly 3 is with air outlet 33, for the discharge of air after preliminary purification, the top of housing 7 is provided with air outlet 6, active carbon slab 4, ultraviolet lamp tube 5 is provided with successively between air outlet 33 and air outlet 6, active carbon slab 4 is for the pollutant in absorbed air and remove the peculiar smell of air, and the irradiation of ultraviolet lamp tube can kill the microorganism such as bacterium, virus in air.

As shown in Figure 2, the hollow fiber film assembly 3 of water-filling is the core component of air cleaning unit of the present invention, and its view in transverse section as shown in Figure 3.Hollow fiber film assembly 3 is primarily of putamina 32 and hollow fiber film tube composition.Putamina 32 main body is cylindrical, and water is equipped with in inside, and the middle part of putamina 32 end face is provided with air outlet 33, and the air after purification is discharged by air outlet 33.Many hollow fiber film tube composition hollow-fibre membranes tube bank 31, and be immersed in the water 35 in putamina 32 completely, one end epoxy resin 34 of hollow-fibre membrane tube bank 31 is encapsulated in putamina 32, the other end of hollow-fibre membrane tube bank 31 is communicated with air inlet 1, and also sealed by epoxy resin 34 towards between one end and putamina 32 of air inlet 1, prevent from leaking.Air passes into hollow-fibre membrane tube bank 31 from air inlet 1, and air, after the saturating filmed passing tube of membrane aperture, passes in the form of bubbles, then discharged by air outlet 33 from water.

In the present embodiment, hollow-fibre membrane tube bank is made up of many PVDF hollow fiber film tubes, and the top of putamina is also provided with water inlet, and bottom is provided with delivery port.Water enters in putamina by water inlet, when the pollutant in water is more, is discharged by the water with pollutant by delivery port, realizes the replacing of water in putamina.

The course of work of air cleaning unit of the present invention is as follows:

During concrete use, start blower fan 2, air enters the hollow fiber film assembly 3 of water-filling from air inlet 1, flow in each hollow fiber film tube respectively, suspended particulate substance (comprising solid and liquid granule) in air is trapped, and macromolecular organic pollution is also because the difference of infiltration rate is separated; And micromolecular air can pass through membrane aperture, form a lot of minute bubbles at film outer surface, the water 35 of restraining outside 31 with hollow-fibre membrane has very large contact area, and air, through in the process of water layer, can be removed by water-soluble pollutant in air; Air to be emerged the water surface with the form of bubble, discharges, continue to flow through the active carbon slab 4 be positioned at above hollow fiber film assembly 3 from the air outlet 33 of hollow fiber film assembly 3, and active carbon slab 4 can the remaining gas pollutant of absorbed air, and removes the peculiar smell of air; Last under the irradiation of ultraviolet lamp tube 5, the microorganisms such as the bacterium in air, virus are killed, and are discharged by the air outlet 6 at housing 7 top, obtain the air after comprehensive decontamination.

Claims (6)

1., based on an air cleaning unit for membrane separation technique and water washing cleaning, comprise the housing with air inlet and air outlet, it is characterized in that, be provided with hollow fiber film assembly in described housing, hollow fiber film assembly comprises:
Putamina, water is equipped with in inside, and top has air outlet, and this air outlet is communicated with described air outlet;
Hollow-fibre membrane is restrained, and is immersed in the water in described putamina, is made up of many hollow fiber film tubes, and one end sealing of described hollow-fibre membrane tube bank, the other end is communicated with described air inlet through putamina, and seals towards between one end and putamina of air inlet.
2., as claimed in claim 1 based on the air cleaning unit of membrane separation technique and water washing cleaning, it is characterized in that, be positioned at described housing, between the air outlet and air outlet of described hollow fiber film assembly, be provided with active carbon slab and ultraviolet lamp tube successively.
3., as claimed in claim 1 based on the air cleaning unit of membrane separation technique and water washing cleaning, it is characterized in that, described hollow fiber film tube is hydrophobic hollow fiber film pipe.
4., as claimed in claim 3 based on the air cleaning unit of membrane separation technique and water washing cleaning, it is characterized in that, described hollow fiber film tube is PVDF hollow fiber film tube, PTFE hollow fiber film tube or PVC hollow fiber film tube.
5. the air purification method based on any one of Claims 1 to 4 air cleaning unit, it is characterized in that, air is introduced into hollow fiber film tube, and through the fenestra on hollow fiber film tube, retain the suspended particulate substance in separation air and large molecular organic pollutants, then water layer is passed with the form of bubble, pollutant that can be water-soluble in removing air, the air after being purified.
6. air purification method as claimed in claim 5, is characterized in that, the air after described purification irradiates through active carbon slab absorption and ultraviolet lamp tube successively, obtains the air after comprehensive decontamination.
CN201310542752.6A 2013-11-05 2013-11-05 Based on air purification method and the device of membrane separation technique and water washing cleaning CN103591648B (en)

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104190167B (en) * 2014-08-22 2016-05-04 华南理工大学 Method and the device of the two filtration, purification air of a kind of hydrophobic membrane assembly and carbon nanometer layer
CN104437006B (en) * 2014-10-28 2017-06-20 南京大学 A kind of film absorption plant and method for purifying biological methane
CN105817092A (en) * 2016-03-30 2016-08-03 天津工业大学 Hollow fiber membrane type air purifier
CN105749739A (en) * 2016-04-08 2016-07-13 东莞市技塑塑胶科技有限公司 Mobile air conditioner purifier
KR102059721B1 (en) * 2017-06-13 2020-02-11 김정학 Method for hollow fiber membrane making and Air cleaner combined with humidity controller by using hollow fiber membrane

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JP2000084375A (en) * 1998-09-08 2000-03-28 Toray Ind Inc Hollow fiber membrane module and treatment of water
CN2892247Y (en) * 2006-04-27 2007-04-25 孙原波 Water washing air purifying device
CN101135483A (en) * 2006-08-31 2008-03-05 萨塔克株式会社 An apparatus for adding humidity to gas
KR20080093699A (en) * 2007-04-18 2008-10-22 주식회사 엔바이온 The method of multilayer adsorbent element
JP2009207811A (en) * 2008-03-06 2009-09-17 Sanyo Electric Co Ltd Air-cleaning module and air-cleaning device using the same
CN201737767U (en) * 2010-07-13 2011-02-09 南昌航空大学 Bunched hollow fiber membrane device integrating aeration with film filtration effluent

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000084375A (en) * 1998-09-08 2000-03-28 Toray Ind Inc Hollow fiber membrane module and treatment of water
CN2892247Y (en) * 2006-04-27 2007-04-25 孙原波 Water washing air purifying device
CN101135483A (en) * 2006-08-31 2008-03-05 萨塔克株式会社 An apparatus for adding humidity to gas
KR20080093699A (en) * 2007-04-18 2008-10-22 주식회사 엔바이온 The method of multilayer adsorbent element
JP2009207811A (en) * 2008-03-06 2009-09-17 Sanyo Electric Co Ltd Air-cleaning module and air-cleaning device using the same
CN201737767U (en) * 2010-07-13 2011-02-09 南昌航空大学 Bunched hollow fiber membrane device integrating aeration with film filtration effluent

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