CN103332762B - Quasi-molecular ultraviolet water lamp for water treatment system - Google Patents
Quasi-molecular ultraviolet water lamp for water treatment system Download PDFInfo
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- CN103332762B CN103332762B CN201310254498.XA CN201310254498A CN103332762B CN 103332762 B CN103332762 B CN 103332762B CN 201310254498 A CN201310254498 A CN 201310254498A CN 103332762 B CN103332762 B CN 103332762B
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Abstract
The invention relates to a quasi-molecular ultraviolet water lamp for a water treatment system and belongs to the technical field of water treatment. The quasi-molecular ultraviolet water lamp is characterized in that a high-voltage metal electrode of the ultraviolet water lamp is fixed in a groove of an insulating medium groove; a discharging medium plate is fixed at the top of the insulating medium groove; a supporting element is arranged between the high-voltage metal electrode and the discharging medium plate; a discharging air gap is formed between the high-voltage metal electrode and the discharging medium plate; and a metal ground electrode is fixed at the end part of the outer side of the discharging medium plate; one end of a high-voltage and high-frequency power supply is connected with the high-voltage metal electrode, and the other end of the high-voltage and high-frequency power supply is connected with the metal ground electrode and then is contacted and grounded with a treated water body simultaneously. Compared with the prior art, the quasi-molecular ultraviolet water lamp disclosed by the invention has the advantages that the service life of the ultraviolet lamp is prolonged, and the efficiency of ultraviolet water treatment is improved.
Description
Technical field
The present invention relates to a kind of Excimer UV water lamp for water treatment system, belong to water-treatment technology field.
Background technology
Ultraviolet source, as a kind of special source, is widely used in the every field of social production and life.Especially deactivation sterilization, the initiating chamical reaction for the bacteriophage of water, air and material surface makes organic substance decomposing.Up to the present, the main still mercury vapor gas discharge light source of ultraviolet source, what radiation efficiency was the highest is the high atmospheric pressure mercury lamp that adopts the low-pressure mercury lamp of quartz crust or pyrex glass bulb and adopt quartz crust.Although generally acknowledge that the ultraviolet system efficiency of immersion is the highest, but because current ultraviolet mercury lamp is all to hang to be fixed on the use structure in air ambient in design, when for water treatment system, due to electric insulation, surface high-temp, the easy dirt that bonds, so mostly can only adopt open channel open system architecture (OSA), ultraviolet ray need to enter water body through air and therefore cause efficiency not high.
In order to eliminate because ultraviolet mercury lamp is produced and scraps the pollution of mercury to environment, and the life-span of improving ultraviolet source, many explorations have been done at novel ultraviolet light source side face in countries in the world in recent years.The CN1160284 of GE " mercury-free ultraviolet discharge source ", this invention replaces mercury with rare gas elementes such as xenons, sees structure and the luminous ultimate principle of ionization of still not breaking away from traditional UV lamps from accompanying drawing and explanatory note.And the purple lamp of DBD quasi-molecule does not have filament etc. to affect the parts in life-span, working gas can be operated under barometric point, there is no mercury pollution future trouble, do not need again the high temperature of evaporated metal steam, board-like knot flexible design is not subject to size, shape to cross multiple constraint, in addition excimer light source is efficient and energy-conservation, so attracted scientific and technological circle's eye.In " traditional ultraviolet source and new ultra-violet light source " article of publishing in the < < electric light source and lighting > > first phase in 2006 the people such as Liu Yang of electric light source institute of Fudan University, and Chinese Academy of Sciences's plasma the people such as Xu Jinzhou in < < vacuum science and technology > > magazine calendar year 2001s 7 monthly magazine " a kind of novel ultraviolet source---Excimer UV lamp " literary composition, all set forth to some extent.
But the above and DBD ultraviolet lamp structure in, the UV-light of the excimer radiation of the gas that is stimulated all must penetrate positive metal electrode, and this is very difficult.For favourable ultraviolet light passes through, thus metal electrode have to be made to hole pattern shape to scheme to leak ultraviolet light as far as possible more, yet the contradiction of the blank ratio of hole pattern electrode and effectively machining area cannot solve, restricted the raising of the ultraviolet lamp technical indicator of this form.
Summary of the invention
The object of the invention is to propose a kind of Excimer UV water lamp for water treatment system, at existing dielectric barrier discharge (Dielectric Barrier Discharge, hereinafter to be referred as DBD) in ultraviolet lamp structure design, using water as electrode, with overcome arranging of battery lead plate in prior art ultraviolet shielding line with disadvantageous effect effective restraint machining area, improve the working efficiency of ultraviolet lamp.
The Excimer UV water lamp for water treatment system that the present invention proposes, comprise metal ground electrode, discharge medium plate, high-pressure metal electrode, dielectric groove and high voltagehigh frequency power supply, described high-pressure metal electrode is fixed in the groove of dielectric groove, described discharge medium plate is fixed on the top of dielectric groove, between high-pressure metal electrode and discharge medium plate, be provided with support component, between high-pressure metal electrode and discharge medium plate, form discharge air-gap; Metal ground electrode is fixed on the outboard end of discharge medium plate, and one end of described high voltagehigh frequency power supply is connected with high-pressure metal electrode, after the other end of high voltagehigh frequency power supply is connected with metal ground electrode, contacts ground connection with processing water body simultaneously.
The Excimer UV water lamp for water treatment system that the present invention proposes, its advantage is, utilized the conductive characteristic of water, ground electrode using the staying water while as DBD discharging structure, be added in the high-frequency high-voltage between high-pressure metal battery lead plate and water body, the working gas in air gap can be excited into quasi-molecule, form ultraviolet radiation, if xenon excimer radiation is mainly near arrowband vacuum ultraviolet (VUV) 172nm, the radiation of visible ray and infrared light part is less than 1%.Because the photon energy (7.2eV) of radiation is greater than the bond energy of most of organic compound, so can directly make the organic substance decomposing mineralising in water.On the other hand, water and oxygen have very strong receptivity to vacuum ultraviolet, and without using catalyzer just can generate OH-free radical and active oxygen, thereby initiating chamical reaction makes organic substance decomposing mineralising.Excimer UV water lamp for water treatment system of the present invention, Excimer UV light penetrates discharge medium plate and directly acts on water body and be not subject to any stopping, therefore avoided arranging of battery lead plate in prior art ultraviolet shielding line with disadvantageous effect effective restraint machining area, thereby improved further the working efficiency of apparatus for ultraviolet light treamtent.In addition, in Excimer UV water lamp of the present invention, because there is no electric heating electrode, ultraviolet water light fixture has very long work-ing life, and high-intensity uv-radiation cannot adhere to the soft dirt on discharge medium plate surface, has greatly reduced the maintenance amount of ultraviolet water lamp.Simple for structure and the long lifetime due to ultraviolet water lamp of the present invention, can be advantageously used in various types of water processing establishments, to adapt to the needs of various Working environments.
Accompanying drawing explanation
Fig. 1 is the structural representation of the Excimer UV water lamp for water treatment system that proposes of the present invention.
Fig. 2 is an Application Example of ultraviolet water lamp as shown in Figure 1.
Fig. 3 is the A-A schematic diagram of the Excimer UV water lamp shown in Fig. 2.
In Fig. 1-Fig. 3, the 1st, discharge medium plate, the 2nd, high-pressure metal electrode, the 3rd, support component, the 4th, discharge air-gap, the 5th, high voltagehigh frequency power supply, the 6th, metal ground electrode, the 7th, UV-light, the 8th, dielectric cell body.
Embodiment
The Excimer UV water lamp for water treatment system that the present invention proposes, its structure as shown in Figure 1, comprises metal ground electrode 2, discharge medium plate 1, high-pressure metal electrode, dielectric groove and high voltagehigh frequency power supply 5.High-pressure metal electrode 2 is fixed in the groove of dielectric groove 8, discharge medium plate 1 is fixed on the top of dielectric groove 8, between high-pressure metal electrode 2 and discharge medium plate 1, be provided with support component 3, between high-pressure metal electrode 2 and discharge medium plate 1, form discharge air-gap.Metal ground electrode 6 is fixed on the outboard end of discharge medium plate 1, and one end of high voltagehigh frequency power supply 5 is connected with high-pressure metal electrode 2, after the other end of high voltagehigh frequency power supply 5 is connected with metal ground electrode 6, contacts ground connection with processing water body simultaneously.
The Excimer UV water lamp for water treatment system that the present invention proposes, wherein between high-pressure metal electrode 2 and discharge medium plate 1, form accurate working gas gap, this accurate working gas gap can be contained in the Excimer UV radiating gas that excites generation of high-frequency high-voltage; When described ultraviolet water lamp is submerged in staying water, the ground electrode of power supply is introduced water body and is made water body and its equi-potential, therefore water body ground electrode, discharge medium plate, gas gap and high-pressure metal battery lead plate form a kind of typical DBD discharging structure, when high-pressure side and the high-pressure metal electrode of external power source are connected, high voltagehigh frequency electricity excites the incoherence Excimer UV radiation of γ-ray emission respective wavelength in gap, penetrate discharge medium plate and act on a large amount of negative hydroxyls of water body generation and active oxygens, decompose mineralising organic pollutants, thus purifying water body.
The Excimer UV water lamp for water treatment system that the present invention proposes, working gas is the mixed gas of rare gas element, metallic vapor, halogen gas or above-mentioned gas.The profile of Excimer UV water lamp can be tabular, circular arc or tubulose, and discharge medium plate wherein can be processed into flat board, circular arc or tubulose according to the difference of lamp body shape.Discharge medium plate wherein, can be identical shaped sheet material, can be also through finishing impression cold machining or according to needed Etching, to go out discharging gap and the support component matching with above-mentioned shape.The material of discharge medium plate can be as synthetic quartz glass etc. to the good material of the ultraviolet transparency of this wavelength, when discharge medium plate is synthetic pure quartz glass, regulate strength of electric field and frequency, while making average excitation electron energy reach 1-10eV, electron density is 10
13-10
16cm
-3time, an atmospheric xenon (Xe
2 *) can launch 172nm length ultraviolet line, photoelectric transformation efficiency is more than 20%, the highlyest in theory can reach 60%.The discharge medium plate bottom portion of groove degree of depth (discharge air-gap) is between 0.1mm-1.0mm.
An application example figure of the Excimer UV water lamp for water treatment system that the present invention proposes as shown in Figure 2, wherein, insulation medium board 8 is by one flat plate glass, its two-sided dry method of passing through, the methods such as wet etching or cold machining plain milling process groove and the step with the figure of the supporting member 3 of band or loose point, its trench bottom bonding stationary phase is with the metal electrode board 2 of figure and be connected to external high pressure high frequency electric source 5 by high pressure fixture wire, the high synthetic quartz glass of ultraviolet thoroughly of discharge medium plate 1 use is made, embed in the step of insulation medium board 8 and carry out sealing-in sealing.Insulation medium board 8, by forming the working clearance 4 between supporting member 3 and discharge medium plate 1, is full of and can produces the luminous gas working medium of quasi-molecule such as xenon in the middle of the working clearance 4.When water lamp is immersed in water, between metal electrode 2, air gap 4, discharge medium plate 1 and water body, just form DBD dielectric barrier discharge structure, the working gas in working gas gap 4 excites the lower 172nm Excimer UV light that just can produce at high-frequency and high-voltage.UV-light penetrates discharge medium plate synthetic quartz glass and directly acts in required water body to be processed, and high-octane 172nm vacuum ultraviolet (VUV) directly excites water molecules to produce negative hydroxyl and active oxygen, efficiently clear up with mineralising water body in organic pollutant.
Fig. 3 is the A-A schematic diagram of the Excimer UV water lamp shown in Fig. 2, as can be seen from Figure 3, and the two-sided one-tenth mirror-image structure of board-like water lamp.The body junction member of this case study on implementation is insulation medium board 8, carries out ladder figure etching and processing on its two sides.First etching and processing goes out the first layer groove that tabernacle embeds dielectric medium version 1, and then on groove, carry out again second layer Etching, process groove and the supporting member 3 of discharge air-gap 4, finally at second stage bottom portion of groove, carry out metalized and make high-pressure metal electrode 2, present case is by the high-pressure metal electrode foil plate with the good supporting member hole of Etching, by sizing agent pressurizing attaching, at bottom portion of groove, makes.Discharge medium version 1 tabernacle is embedded in the first layer groove of insulation medium board 8, and sealing-in is carried out by low temperature glass solder in surrounding, to guarantee the insulated enclosure performance in water.The dual-side of insulation medium board 8 embeds the metal ground electrode of same shape 6 bonding firm by grinding flute in advance.In air gap 4, be filled with the working gass such as xenon of barometric point, and the outlet line of high voltage electrode 29 is drawn through HV Terminal 10.
When this board-like ultraviolet water lamp is submerged in pending water body, the metal ground electrode 6 contact water bodys of water lamp side make water body jointly become equipotential ground electrode, when external high pressure high frequency electric source is connected between metal ground electrode 6 and high-pressure metal electrode 2, water body (metal ground electrode 6), discharge medium plate 1 (synthetic quartz plate), the common dielectric impedance silent discharge DBD structure that forms classics of working gas in high-pressure metal electrode 2 and air gap, energy storage electric discharge at discharge medium plate strengthens under the effect of electric field, be subject to the electrically excited working gas generation Excimer UV of its high-frequency and high-voltage luminous, penetrate synthetic quartz plate and directly inject staying water, high-energy vacuum-ultraviolet light directly excites water molecules to produce negative hydroxyl, the organic pollutant that active oxygen species etc. act in water body efficiently clears up it so that mineralising.
Claims (1)
1. the Excimer UV water lamp for water treatment system, it is characterized in that this ultraviolet water lamp comprises metal ground electrode, discharge medium plate, high-pressure metal electrode, dielectric groove and high voltagehigh frequency power supply, described high-pressure metal electrode is fixed in the groove of dielectric groove, described discharge medium plate is fixed on the top of dielectric groove, between high-pressure metal electrode and discharge medium plate, be provided with support component, between high-pressure metal electrode and discharge medium plate, form discharge air-gap; Metal ground electrode is fixed on the outboard end of discharge medium plate, and one end of described high voltagehigh frequency power supply is connected with high-pressure metal electrode, after the other end of high voltagehigh frequency power supply is connected with metal ground electrode, contacts ground connection with processing water body simultaneously.
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| CN103332762B true CN103332762B (en) | 2014-08-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107253746A (en) * | 2017-07-28 | 2017-10-17 | 罗璐 | The water treatment facilities of water supply network terminal based on CSDBD |
| CN107244708A (en) * | 2017-07-28 | 2017-10-13 | 罗璐 | The water treatment facilities of water supply network terminal based on S VDBD |
| CN108328693A (en) * | 2018-04-21 | 2018-07-27 | 罗璐 | A kind of mixing electric discharge vacuum ultraviolet device and water treatment system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0796278A (en) * | 1993-09-27 | 1995-04-11 | Senichi Masuda | Creeping discharge type ultraviolet element and fluid treatment apparatus using the same |
| CN2592631Y (en) * | 2002-08-28 | 2003-12-17 | 中国科学院等离子体物理研究所 | Quasi-molecule ultraviolet light source |
| CN201785237U (en) * | 2010-08-31 | 2011-04-06 | 四川省科学城中心科技有限公司 | DBD (dielectric barrier discharge) plasma hydroxyl radical generating device for waste water treatment |
| CN102595756A (en) * | 2012-03-15 | 2012-07-18 | 大连海事大学 | Generating device and generating method for gas-liquid mixed dielectric barrier discharge |
| CN102603029A (en) * | 2012-03-26 | 2012-07-25 | 东华大学 | Device for treating dye wastewater by dielectric barrier discharge technology and method thereof |
-
2013
- 2013-06-25 CN CN201310254498.XA patent/CN103332762B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0796278A (en) * | 1993-09-27 | 1995-04-11 | Senichi Masuda | Creeping discharge type ultraviolet element and fluid treatment apparatus using the same |
| CN2592631Y (en) * | 2002-08-28 | 2003-12-17 | 中国科学院等离子体物理研究所 | Quasi-molecule ultraviolet light source |
| CN201785237U (en) * | 2010-08-31 | 2011-04-06 | 四川省科学城中心科技有限公司 | DBD (dielectric barrier discharge) plasma hydroxyl radical generating device for waste water treatment |
| CN102595756A (en) * | 2012-03-15 | 2012-07-18 | 大连海事大学 | Generating device and generating method for gas-liquid mixed dielectric barrier discharge |
| CN102603029A (en) * | 2012-03-26 | 2012-07-25 | 东华大学 | Device for treating dye wastewater by dielectric barrier discharge technology and method thereof |
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Effective date of registration: 20180903 Address after: 100094 room 316, 1 building, 13 Cui Hunan Road, Haidian District, Beijing. Patentee after: Beijing Qingyuan in the Department of environmental protection science and technology limited company Address before: 102218 Changping District, Beijing Tiantongyuan north two district 33 33 Patentee before: Luo Lu |
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