CN102642957A - Dismantle-free self-cleaning method of industrial waste water microwave photocatalysis degradation treatment device - Google Patents
Dismantle-free self-cleaning method of industrial waste water microwave photocatalysis degradation treatment device Download PDFInfo
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- CN102642957A CN102642957A CN2012101057243A CN201210105724A CN102642957A CN 102642957 A CN102642957 A CN 102642957A CN 2012101057243 A CN2012101057243 A CN 2012101057243A CN 201210105724 A CN201210105724 A CN 201210105724A CN 102642957 A CN102642957 A CN 102642957A
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Abstract
The invention relates to a dismantle-free self-cleaning method of an industrial waste water microwave photocatalysis degradation treatment device, which belongs to the technical field of the waste water treatment. In the existing microwave photocatalysis degradation technology for industrial waste water containing organic pollutants, the outer side surface of a quartz tube for protecting an electrodeless ultraviolet lamp is likely to scale after being soaked in the waste water liquid for long time, the scaling layer seriously influence the transparence of the quartz tube for the ultraviolet ray, so that the treatment efficiency of the microwave photocatalysis degradation reaction device is greatly reduced. The invention aims at solving the problem. The method comprises the steps of: installing an ultrasonic transducer inside or on the outer surface of a microwave photocatalysis reactor and starting relevant power supplies. According to the method, on the dismantle-free premise, the scaling on the outer side surface of the quartz tube can be cleared by ultrasonic in time; and under the situation that an ultrasonic transmitting mechanism runs continuously, the scaling process can be completely inhibited.
Description
Technical field
The present invention relates to a kind of trade effluent microwave and photo catalysis degradation treatment device and exempt to tear open the self-cleaning method of machine, belong to the C02F technical field of waste water processing.
Background technology
Microwave and photo catalysis degradation treatment technology, effectively to the innoxious process for treating that contains the organic pollutant trade effluent, development in recent years is swift and violent as a kind of.
About the microwave and photo catalysis degradation technique,, can referring to publication number the one Chinese patent application case of CN102260003A as an example.
This publication number is the one Chinese patent application case of CN102260003A; Be with microwave as excitaton source, excite electrodeless uv lamp emitted in ultraviolet line, be mixed with the suspension liquid of photocatalyst titanium oxide in liquid internal irradiation; This electrodeless uv lamp is shrouded by silica tube to be protected; Have pneumatic pump continue to inject air to this silica tube inner chamber, the air that is overflowed by quartzy chamber is via pipeline and the micro porous aeration head UNICOM that is positioned at reactor bottom, and the lower zone of this inside reactor is the aeration zone; The upper area of this inside reactor is the microwave and photo catalysis reaction zone; This scheme is also with the built-in membrane separation assemblies of reactor drum, carries the water of analysing after the purification, and realizes that with this membrane separation assemblies holding back again of photocatalyst titanium dioxide fine particles use; This scheme is also set up dividing plate between electrodeless ultraviolet light source and membrane separation assemblies, be used to prevent the radiation injury of ultraviolet ray to the membrane separation assemblies of organic matter; Feed the air of inside reactor; Part is participated in the photocatalytic degradation reaction that relies on photocatalyst titanium oxide directly; Some air; Under the direct irradiation of UV-light, generate a certain amount of ozone, the ozone of this generation is also being brought into play the direct oxidative degradation that is directed against organic pollutant certainly.
This publication number is that the one Chinese patent application case of CN102260003A has undoubtedly played very important pushing effect for the progress of microwave and photo catalysis waste water degradation technique, and its research staff is admirable in this field institute unfolded work.
As stated, be in the expressed apparatus structure of the one Chinese patent application case of CN102260003A at this publication number, be used to shield the silica tube that protects electrodeless uv lamp; Its outer wall refers to the outer wall of silica tube, through for a long time be processed contacting of trade effluent; Incrustation gradually unavoidably; The long-pending material of dirt mainly is to be difficult for by the mineral-type impurity that light-catalyzed reaction touched certainly, and the incrustation phenomenon because of this mechanism forms is easy to be observed after the equipment long-play; Be attached to the dirty lamination of said silica tube outer wall, though be very thin one deck, also be enough to ultraviolet radiation to electrodeless uv lamp and cause significantly and stop, this will cause the actual treatment of this microwave and photo catalysis reaction treating device to be renderd a service significantly reducing; In the use of laboratory yardstick, above-mentioned incrustation problem is subtle, and still, on the industrial application yardstick, this incrustation problem undoubtedly will highlight; Therefore,, remove the dirty lamination on this silica tube outer wall immediately, effectively, keep the high-level efficiency that continues of this microwave and photo catalysis treatment unit, just become an important techniques problem that merits attention how not shutting down, do not tear open under the prerequisite of machine.
Summary of the invention
Technical problem to be solved by this invention is; The incrustation problem of its said silica tube outer wall that exists in using to above-mentioned CN102260003A application case device; Research and develop and a kind ofly can not shut down, not tear open under the prerequisite of machine, realize said silica tube outer wall settle accounts immediately method.
The present invention solve the technical problem through following scheme; This scheme provides a kind of trade effluent microwave and photo catalysis degradation treatment device to exempt to tear open the self-cleaning method of machine; This method may further comprise the steps: a, install ultrasonic transducer at the inside or the outside surface of microwave and photo catalysis reactor drum; B is connected the end of this ultrasonic transducer with HF oscillation electric signal transmission cable; C is connected the other end of this HF oscillation electric signal transmission cable with HF oscillation electric signal producer; D is with HF oscillation electric signal producer energized.
Because the related microwave environment of this reactor drum, the ultrasonic transducer structure that can resist microwave interference and damage is a preferred construction, and therefore, the preferred ultrasonic transducer that is suitable for this case is the ultrasonic transducer with armouring of metal shell.Ultrasonic transducer with armouring of metal shell can customize to ultrasonic device specialized factory.
No matter whether said ultrasonic transducer is the ultrasonic transducer with armouring of metal shell; Further the shielding to microwave is always useful; Consider based on this; Can be at the peripheral micro-wave screening thing that further coats of said ultrasonic transducer, this micro-wave screening thing can be the micro-wave screening cover that is the cage shape, this cage shape micro-wave screening cover is to be used to prevent interference and the damage of microwave to said ultrasonic transducer; Said ultrasonic transducer is coated wherein by said cage shape micro-wave screening cover, and the material of this cage shape micro-wave screening cover is a metal material.The cage shape micro-wave screening cover of said metal material as its name suggests, is metal cap multiple hole, that be the cage shape.
Because ultrasonic cavitation is the strong effect of a kind of ten minutes; Low-frequency ultrasonic waves is stronger to the surface impacts of object workpiece; The cavatition of this low-frequency ultrasonic waves is not too to be fit to for the said silica tube outer side of inside reactor, because, if long-time this ultrasonic mechanism radiation low-frequency ultrasonic waves in reactor drum that uses; The powerful ultrasonic cavitation of this low-frequency ultrasonic waves will cause the destruction of its outer side smooth finish of silica tube of inside reactor so; And gradually to Mao Shabo face form transformation, this has also hindered the penetrating of UV-light to a certain extent, deviates from mutually with the original intention of this case; Yet along with the raising of the ultrasonic frequency of being selected for use, cavatition weakens until ignoring to the damage of object workpiece gradually; Therefore, the preferred ultrasonic frequency that is suitable for this case is not random frequency.
As stated, for avoiding the hair desertification damage of ultrasonic cavitation to the said silica tube outer side of inside reactor, the preferred frequency of this ultrasonic transducer institute ultrasonic waves transmitted at least should be more than 100KHz; Its scope of preferred frequency of this transverter institute ultrasonic waves transmitted is between 100KHz and 12MHz.
Simultaneously, for avoiding the damage of UW, should select lower powered UW for use to the membrane separation assemblies of inside reactor; Capacity, ultraviolet lamp tube quantity, silica tube quantity of volume, the internal liquid of reactor drum or the like depended in the selection of ultrasonic power; The mode that also depends on ultrasonic emitting promptly continues or intermittently or the like the selection of mode, and ultrasonic power can be confirmed according to the needs comprehensive consideration of real reaction body system.
With the anastomosing power supply of said HF oscillation electric signal transmission cable, both can be the simple power supply that uses of connecting, this power supply can certainly be the power supply that has the power supply time switch; Utilize this power supply that has the power supply time switch, can realize hyperacoustic timing emission control; Said power supply time switch certainly is the time switch that has programmodule.Said various time switch all has commercially available.
Environment for use in view of this case ultrasonic transducer; Problem against corrosion merits attention; Therefore, its preferred scheme of said ultrasonic transducer is to select the ultrasonic transducer that has tetrafluoroethylene resist or pvdf resist for use; The step of this case method thus, can also be included in external coating, coating tetrafluoroethylene resist or the pvdf resist of ultrasonic transducer.
With regard to tetrafluoroethylene application and pvdf application techniques itself, for the professional in macromolecular material application techniques field, be known only.
Ultrasonic transducer with tetrafluoroethylene resist or pvdf resist also can directly customize to ultrasonic device specialized factory.
This case method can further include some other steps, said other step for example: application on high-frequency electrical signal transmission cable, coat tetrafluoroethylene resist or pvdf resist; Said other step is also for example: set metal silk screen screen layer on high-frequency electrical signal transmission cable, this wire cloth screen layer are used to intercept the microwave radiation of these its surrounding enviroment of cable to be disturbed; Or the like.
The quantity of said ultrasonic transducer also can be more than one; The quantity of said ultrasonic transducer is not limit, and the quantity of said ultrasonic transducer can be quantity arbitrarily; The quantity of said ultrasonic transducer can be set according to the needs comprehensive consideration of practical systems.
Advantage of the present invention is; Inside or outside surface through at reactor drum are installed ultrasonic transducer; Utilize high-frequency ultrasonic, do not shutting down, do not tearing open under the machine prerequisite, the instant removing of the incrustation of the said silica tube outer side of realization microwave and photo catalysis inside reactor; Keep the high penetration performance of said silica tube by this, and keep the high-level efficiency that continues of microwave and photo catalysis reaction unit UV-light.Compared to existing technologies, this case has non-obvious, substantial technical progress.
Embodiment
The enforcement of this case method, key step is following:
A installs ultrasonic transducer at the inside or the outside surface of microwave and photo catalysis reactor drum;
B is connected the end of this ultrasonic transducer with HF oscillation electric signal transmission cable;
C is connected the other end of this HF oscillation electric signal transmission cable with HF oscillation electric signal producer;
D is with HF oscillation electric signal producer energized.
This ultrasonic transducer preferably has the ultrasonic transducer of the armouring of metal shell.
This ultrasonic transducer preferably has the ultrasonic transducer of cage shape micro-wave screening cover, and the material of this cage shape micro-wave screening cover is a metal material.
Its scope of the preferred transmitting frequency of this ultrasonic transducer is between 100KHz and 12MHz.
This power supply preferably has the power supply of power supply time switch.
Its enforcement of this method is further comprising the steps of, at external coating, coating tetrafluoroethylene resist or the pvdf resist of ultrasonic transducer.
Its enforcement of this method also allows further to may further comprise the steps, application on high-frequency electrical signal transmission cable, coating tetrafluoroethylene resist or pvdf resist.
The tetrafluoroethylene resist of institute's application, coating or its thickness of pvdf resist can be any specified thickness; The resist of any thickness can both be brought into play the certain protection effect; The thickness of this resist can be confirmed according to actual needs.
Its enforcement of this method also allows further to may further comprise the steps, and set metal silk screen screen layer on high-frequency electrical signal transmission cable, this wire cloth screen layer are used to intercept the microwave radiation interference of these its surrounding enviroment of cable.
Said ultrasonic transducer is together with the HF oscillation electric signal producer that links together with it via HF oscillation electric signal transmission cable; And; Line related; Constitute ultrasound emission mechanism, under the situation of said ultrasound emission mechanism continuous operations, its process of the fouling of said silica tube outer side can be suppressed fully.
Certainly, said continuous operations not necessarily because also can intermittently operate, or manually boot its running, such as manually booting running several minutes or tens of minutes space-number week as required under specific needs exempt to tear open the situation of machine cleaning; Or the like.
Claims (6)
1. trade effluent microwave and photo catalysis degradation treatment device exempts to tear open the self-cleaning method of machine, and the key step of this method is following: a, install ultrasonic transducer at the inside or the outside surface of microwave and photo catalysis reactor drum; B is connected the end of this ultrasonic transducer with HF oscillation electric signal transmission cable; C is connected the other end of this HF oscillation electric signal transmission cable with HF oscillation electric signal producer; D is with HF oscillation electric signal producer energized.
2. trade effluent microwave and photo catalysis degradation treatment device according to claim 1 exempts to tear open the self-cleaning method of machine, it is characterized in that this ultrasonic transducer is the ultrasonic transducer with armouring of metal shell.
3. trade effluent microwave and photo catalysis degradation treatment device according to claim 1 and 2 exempts to tear open the self-cleaning method of machine, it is characterized in that, this ultrasonic transducer is coated wherein by cage shape micro-wave screening cover, and the material of this cage shape micro-wave screening cover is a metal material.
4. trade effluent microwave and photo catalysis degradation treatment device according to claim 1 exempts to tear open the self-cleaning method of machine, it is characterized in that, this ultrasonic transducer institute its frequency of ultrasonic waves transmitted is between 100KHz and 12MHz.
5. trade effluent microwave and photo catalysis degradation treatment device according to claim 1 exempts to tear open the self-cleaning method of machine, it is characterized in that this power supply is the power supply that has the power supply time switch.
6. trade effluent microwave and photo catalysis degradation treatment device according to claim 1 exempts to tear open the self-cleaning method of machine; It is characterized in that; This method is further comprising the steps of, at external coating, coating tetrafluoroethylene resist or the pvdf resist of ultrasonic transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101057243A CN102642957A (en) | 2012-03-30 | 2012-03-30 | Dismantle-free self-cleaning method of industrial waste water microwave photocatalysis degradation treatment device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101057243A CN102642957A (en) | 2012-03-30 | 2012-03-30 | Dismantle-free self-cleaning method of industrial waste water microwave photocatalysis degradation treatment device |
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| CN102642957A true CN102642957A (en) | 2012-08-22 |
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| CN2012101057243A Pending CN102642957A (en) | 2012-03-30 | 2012-03-30 | Dismantle-free self-cleaning method of industrial waste water microwave photocatalysis degradation treatment device |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201458790U (en) * | 2009-09-09 | 2010-05-12 | 哈尔滨工业大学水资源国家工程研究中心有限公司 | Water treatment device combining ultraviolet disinfection and ultrasound |
| CN102260003A (en) * | 2011-05-31 | 2011-11-30 | 武汉纺织大学 | Microwave electrodeless ultraviolet photocatalysis-double membrane separation coupled treatment device for industrial wastewater |
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2012
- 2012-03-30 CN CN2012101057243A patent/CN102642957A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201458790U (en) * | 2009-09-09 | 2010-05-12 | 哈尔滨工业大学水资源国家工程研究中心有限公司 | Water treatment device combining ultraviolet disinfection and ultrasound |
| CN102260003A (en) * | 2011-05-31 | 2011-11-30 | 武汉纺织大学 | Microwave electrodeless ultraviolet photocatalysis-double membrane separation coupled treatment device for industrial wastewater |
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Application publication date: 20120822 |