CN101462781B - Ultraviolet water treatment apparatus - Google Patents

Ultraviolet water treatment apparatus Download PDF

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Publication number
CN101462781B
CN101462781B CN 200810183751 CN200810183751A CN101462781B CN 101462781 B CN101462781 B CN 101462781B CN 200810183751 CN200810183751 CN 200810183751 CN 200810183751 A CN200810183751 A CN 200810183751A CN 101462781 B CN101462781 B CN 101462781B
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stream
water
lamp
ultraviolet
ultraviolet irradiation
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CN101462781A (en
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山野井一郎
圆佛伊智朗
阴山晃治
原直树
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Hitachi Ltd
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Hitachi Ltd
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Abstract

The present invention provides an ultraviolet water treatment device capable of obtaining a plurality of water quality grades. The ultraviolet water treatment device of the invention includes: an ultraviolet irradiation groove (1) with an inflow path (5) and an outflow path (7), an ultraviolet ray source (2) for irradiating ultraviolet ray to water to be treated, a protection member for preventing direction contact between the water and the ultraviolet ray source (2), more than one branch path arranged between the inflow path (5) and the outflow path (7) for pumping out water to be treated from the groove (1), the ultraviolet water treatment device carries out different-period ultraviolet irradiation to the water to be treated in the ultraviolet irradiation groove between the branch path and the outflow path (7).

Description

UV water treatment equipment
Technical field
The present invention relates to obtain the UV water treatment equipment of a plurality of different quality grades.
Background technology
Ultraviolet ray is the hertzian wave of a kind of wavelength in the scope of 100~400nm.Process in the up and down water treatment of a large amount of water at needs, use mercuryvapour lamp as ultraviolet source cheaply.Enclosing in seeing through the ultraviolet quartz glass tube of mercuryvapour lamp has mercury vapour, and under the effect of the vapour pressure in the quartz glass tube that lamp is lit a lamp, it is different to generate wavelength.The lamp of vapour pressure below 100Pa is called Cooper-Hewitt lamp, and generating wavelength is the monochromatic ultraviolet line of 254nm.Vapour pressure is called middle medium pressure mercury lamp at the lamp of 50~300kPa, generates take 365nm as predominant wavelength and the light of the wide region of wavelength from the ultraviolet ray below the 200nm to visible light.
In water treatment up and down, ultraviolet ray is mainly used in deactivation and the organic oxygenolysis of microorganism.The deactivation of so-called microorganism refers to the state of microorganism forfeiture fecundity, infection ability isoreactivity.The DNA of microorganism shows the peak value that absorbs near wavelength 260nm, if absorb near the ultraviolet ray this wavelength, then adjacent thymus pyrimidine (thymine) is Dimerized in the DNA chain, can not carry out copying of DNA, bacteria inactivation rate.
In organic oxygenolysis, although the situation of only decomposing to the organism irradiation ultraviolet radiation is also arranged, but the main light-catalyzed reaction that utilizes ultraviolet ray and photocatalyst, perhaps based on the accelerating oxidation reaction of ultraviolet ray with ozone or superoxol, perhaps ultraviolet ray is decomposed with the light-catalyzed reaction of photocatalyst and ozone or superoxol etc. and the reaction after the combination of accelerating oxidation reacting phase.
In light-catalyzed reaction, if illumination wavelength is at the ultraviolet ray below the 400nm or the visible light more than the 400nm on the photocatalysts such as titanium oxide that are immersed in the processed water, then water is decomposed and generates hydroxide radical free radical (hydroxy-radical).Free radical (radical) has strong oxidizing property, with oxidation operation, decomposition on every side.Absorbable long wavelength is determined by the kind of photocatalyst.
The ozone or the hydrogen peroxide that in the accelerating oxidation reaction, use, owing to itself have oxidisability, so the oxidized decomposition of the organism in the processed water.In the accelerating oxidation reaction, utilize ultraviolet ray to decompose directly or indirectly ozone or the hydrogen peroxide that adds.In the situation of directly decomposing, to the ultraviolet ray below the processed water illumination wavelength 300nm.Ultraviolet light degradation ozone or the hydrogen peroxide of this frequency band generate the hydroxide radical free radical.In the situation of indirectly decomposing, in processed water, sneak into photocatalyst.The not only ultraviolet ray of absorbing wavelength below 300nm of photocatalyst, also ultraviolet ray and the visible light of absorbing wavelength more than 300nm generates the hydroxide radical free radical.Hydroxide radical free radical ozone decomposition or hydrogen peroxide further generate the hydroxide radical free radical.Because the hydroxide radical free radical has than ozone, oxidisability that hydrogen peroxide is stronger, so compare with the situation of independent use ozone or hydrogen peroxide, organic oxidation and decomposition have been promoted.
Use in the situation of Cooper-Hewitt lamp in the deactivation of microorganism or organic oxygenolysis, the ultraviolet ray of generation is absorbed well by DNA, ozone or hydrogen peroxide.Therefore, the reaction of deactivation or accelerating oxidation can be carried out expeditiously, the needed electric weight of water treatment can be reduced.On the other hand, in use in the situation of medium pressure mercury lamp, although the efficient of deactivation or accelerating oxidation reaction is not high, because the ultraviolet work output that the per unit lamp body amasss is large, reduced the number of units of the needed lamp of water treatment, so have the advantage that device can miniaturization.
As such water treatment device, in [non-patent literature 1], [patent documentation 1], [patent documentation 2], disclose.
[non-patent literature 1] described water treatment device is the device that makes bacteria inactivation rate, is the structure of dipping UV-lamp in the groove of drum.[patent documentation 1] described water treatment device is the organic device of oxygenolysis, floods UV-lamp in the groove of drum, injection of ozone bubble in same groove.[patent documentation 2] described water treatment device, in internal configuration the processed liquid of collecting post's requirement in the treatment tank of UV-lamp, bottom side in the treatment tank carries out in turn aeration (aeration) with the mixed gas of ozone and air and supplies with, stir processed liquid and it is contacted with described mixed gas, impurity is carried out redox, sterilization.
The spout of processing water in any one device all is one, the exposure intensity by changing ultraviolet source or process flow etc., the control water quality treatment.That is, only can obtain a kind of processing water of water quality from a device.
[patent documentation 1] TOHKEMY 2003-266088 communique
[patent documentation 2] TOHKEMY 2004-329988 communique
[non-patent literature 1] consortium as a juridical person's tap water Technical Research Center, " reducing environmental influence water purification technology development research (e-Water) guide collection ", p.285 (2005)
But, for example sometimes need sewage discharge water and reuse water to require like that the different processing of water quality in sewage disposal department.
For reuse water, as long as the situation that bacteria inactivation rate is got final product is arranged, also have to require on this basis until make the organism such as odorous substance or chromatic(ity)component reduce just passable situation.As long as in the situation that bacteria inactivation rate is got final product, the benchmark ratio sewage discharge water benchmark of reuse water is strict.For example, reuse water requires intestinal bacteria not detect/100mL, and sewage discharge water requires 3000/mL of coliform.
Therefore, if will be by the water after the benchmark processing of reuse water as sewage discharge, the water quality of discharging point of destination improves, and then processes surplus as sewage discharge water on the contrary, has the problem of the running cost increase for the treatment of plant.In order to use prior art more effectively to carry out water treatment, need a plurality of sewage discharge water different device of using with reuse water, exist the area change to be set greatly, the problem that cost also increases.
In addition, about requiring to reduce organic reuse water, the water quality difference of itself and sewage discharge water is larger.This be because, in general for reducing organism, need to be than making the more ultraviolet irradiation amount of volume of bacteria inactivation rate.Until reduce in the reuse water till the organism, can fully reach the benchmark of bacteria inactivation rate at irradiation ultraviolet radiation.Like this, when the reuse water that will implement to reduce organic processing during as sewage discharge, although the water quality of discharging point of destination becomes better, there is as the superfluous processing of sewage discharge water the problem of the running cost increase for the treatment of plant.In this case, carry out water treatment in order more effectively to use prior art, also need a plurality of sewage discharge water different device of using with reuse water, exist the area change to be set greatly, the problem that cost also increases.
Summary of the invention
The object of the present invention is to provide a kind of UV water treatment equipment that can obtain a plurality of different quality grades.
For achieving the above object, UV water treatment equipment of the present invention has: ultraviolet irradiation groove, and it has the stream of inflow and flows out stream, and the processed water that flows into from this inflow stream circulates described ultraviolet irradiation groove; Ultraviolet source, it is to described processed water irradiation ultraviolet radiation; Guard member, it prevents that described processed water from directly contacting with ultraviolet source, and sees through ultraviolet ray; And more than one branch stream, it is arranged on described inflow stream and flows out between the stream, extract processing water out from ultraviolet irradiation groove, described UV water treatment equipment carries out the uviolizing of different time to the processed water in the ultraviolet irradiation groove between described branch stream and the outflow stream.
In addition, possesses the oxygenolysis stream that is communicated with described branch stream in the inside of described ultraviolet irradiation groove.And this UV water treatment equipment has: the oxygenant generating unit, and it generates ozone or hydrogen peroxide; And oxygenant injection stream, it is connected with described oxygenolysis stream, injects described ozone or hydrogen peroxide.
The invention effect
According to the present invention, by branch's stream is set in ultraviolet irradiation groove, can obtain with a device processing water of a plurality of different quality grades.Therefore, and compare for the processing water that obtains a plurality of different quality grades uses the situation of a plurality of devices, can reduce the area that arranges of device.
Description of drawings
Fig. 1 is the longitudinal section of the UV water treatment equipment of embodiments of the invention 1;
Fig. 2 is the sectional view shown in arrow A-A of Fig. 1;
Fig. 3 is the longitudinal section of the UV water treatment equipment of present embodiment;
Fig. 4 is the sectional view shown in arrow B-B of Fig. 3;
Fig. 5 is the longitudinal section of the UV water treatment equipment of embodiments of the invention 2;
Fig. 6 is the longitudinal section of the UV water treatment equipment of embodiments of the invention 3;
To be expression process the figure of the specific absorption of the ultraviolet ray of water and visible light for sewage secondary to Fig. 7;
Fig. 8 is the longitudinal section of the UV water treatment equipment of embodiments of the invention 4;
Fig. 9 is the longitudinal section of the UV water treatment equipment of embodiments of the invention 5;
Figure 10 is the sectional view shown in arrow C-C of Fig. 9;
Among the figure:
The 1-ultraviolet irradiation groove; The 2-UV-lamp; The 3-protective tube; The 4-lamp control device; 5-flows into stream; 6,7,8-flows out stream; 9,10,43-open and close valve; The 11-control valve device; The 15-UV-lamp; The 31-inner cylinder portion; 32-urceolus section; The 33-ultraviolet ray sees through wall; The 34-influx; The 35-stream; 36-oxygenant injection device; The 38-photocatalyst; 41-oxygenolysis stream.
Embodiment
By reference to the accompanying drawings various embodiments of the present invention are described.
[embodiment 1]
In conjunction with Fig. 1~Fig. 4 embodiments of the invention 1 are described.Fig. 1 is the longitudinal section of the UV water treatment equipment of present embodiment, and Fig. 2 is the sectional view shown in arrow A-A of Fig. 1.In addition, Fig. 3 is the longitudinal section of the UV water treatment equipment of present embodiment, and Fig. 4 is the sectional view shown in arrow B-B of Fig. 3.
As shown in Figure 1 and Figure 2, the ultraviolet irradiation groove 1 of drum is to be fixed with dull and stereotyped sealed structure at two ends, and it is protective tube 3 that the guard member cylindraceous that is formed by quartz is installed between the central part of flat board.In protective tube 3 axially ultraviolet source to be set be UV-lamp 2, UV-lamp 2 is that lamp control device 4 is connected by distribution with the ultraviolet source control device.
Be provided with in ultraviolet irradiation groove 1 and flow into stream 5, flow out stream 7, branch's stream namely flows out stream 6, is provided with plural outflow stream 6.Flow into stream 5 and be arranged on the distolateral of ultraviolet irradiation groove 1, flow out the central part that stream 6 is arranged on ultraviolet irradiation groove 1, flow out stream 7 and be arranged on the end side of ultraviolet irradiation groove 1.Be provided with open and close valve 10 at outflow stream 7.Flow out stream 6 at each open and close valve 9 is set, flow out stream 6 and flow out stream 8 interflow.Open and close valve 9, open and close valve 10 are connected with control valve device 11 by distribution, and are opened and closed by control valve device 11 controls.
Arrow among Fig. 1 represents the flow direction of processed water, processed water 12 flows into from flowing into stream 5, processed water 12 after the inflow by ultraviolet irradiation groove 1 during, by UV-lamp 2 irradiation ultraviolet radiations, process water 13, processing water 14 thereby become, process water 13 and process water 14 from flowing out stream 8 and flowing out the 1 outer outflow of stream 7 sound ultraviolet irradiation groove.If relatively shine process water 13 and process ultraviolet energy on the water 14, be ultraviolet irradiation amount, then shine to the ultraviolet irradiation amount along the mobile processing water 14 of the total length of UV-lamp 2, greater than irradiation in the way of UV-lamp 2 from flowing out the ultraviolet irradiation amount of the processing water 13 that stream 6 flows out, process that more microorganism is inactivated in the water 14.At this, ultraviolet irradiation amount is: ultraviolet irradiation amount=ultraviolet irradiation intensity * irradiation time.
In sewage disposal department, although sewage discharge water is different with the desired deactivation grade of reuse water, but by the UV water treatment equipment of applicable present embodiment, can with a device more effectively generate as the processing water 13 of sewage discharge water and as reuse water processing water 14 these two kinds process water.
Be that control processes water 13 and process water 14 flow and deactivation grade separately, by the exposure intensity of lamp control device 4 control UV-lamp 2, by control valve device 11 control open and close valves 9 separately open valve degree and open and close valve 10 open the valve degree.
In the present embodiment, although the UV water treatment equipment based on a UV-lamp 2 is illustrated, also can as shown in Figure 3, Figure 4, use a plurality of UV-lamp 15.In Fig. 3, infrared rays water treatment device shown in Figure 4; the ultraviolet irradiation groove 1 of drum is to be fixed with dull and stereotyped sealed structure at two ends; the protective tube 3 of a plurality of drums is installed in the ultraviolet irradiation groove 1 of drum, and the central shaft of described protective tube 3 is vertical with the central shaft of ultraviolet irradiation groove 1.At each protective tube 3 UV-lamp 15 is set, each UV-lamp 15 is connected with lamp control device 4 by distribution.Lamp control device 4 can be controlled separately respectively each UV-lamp.
In this case, for the deactivation grade of control processing water 13 and processing water 14, by the exposure intensity of lamp control device 4 each UV-lamp 15 of control, perhaps control turning off the light, lighting a lamp the time of each UV-lamp 15.
Fig. 1~UV water treatment equipment shown in Figure 4 although expression is the UV water treatment equipment of internal irradiation, also can be the UV water treatment equipment of external lighting type.
[embodiment 2]
In conjunction with Fig. 5 embodiments of the invention 2 are described.Fig. 5 is the longitudinal section of UV water treatment equipment.
Present embodiment and UV water treatment equipment shown in Figure 1 consist of in the same manner; the ultraviolet irradiation groove 1 of the drum of present embodiment is to be fixed with dull and stereotyped sealed structure at two ends, and it is protective tube 3 that the guard member cylindraceous that is formed by quartz is installed between the central part of flat board.In the protective tube 3 interior UV-lamp 2 that arrange, UV-lamp 2 is connected with lamp control device 4 by distribution.The ultraviolet irradiation groove 1 of present embodiment is the double pipe structure, and urceolus section 32 and the external diameter little inner cylinder portion 31 large by the external diameter of central part form, and urceolus section 32 is through ultraviolet ultraviolet ray with inner cylinder portion 31 and separates through wall 33.Seeing through wall 33 by ultraviolet ray is space 37 at urceolus section 32 sides formation oxygenolysis stream, and urceolus section 32 is communicated with by urceolus influx 34 with inner cylinder portion 31.
Distolateral a setting in inner cylinder portion 31 flows into stream 5, and the outflow stream 7 of open and close valve 10 is installed in another distolateral setting.The side away from the urceolus influx 34 in urceolus section 32, a plurality of outflow streams 6 that open and close valve 9 is installed are set, the side close to the urceolus influx 34 in urceolus section 32 arranges oxygenant and injects stream 35, and oxygenant injects stream 35 and is connected with oxygenant injection device 36.
Arrow among Fig. 5 represents the flow direction of processed water, processed water 12 flows into from flowing into stream 5, processed water 12 after the inflow by ultraviolet irradiation groove 1 during, illuminated ultraviolet ray from UV-lamp 2, become the processing water 14 that microorganism is inactivated, a part is as processing water 14 from flowing out stream 7 to ultraviolet irradiation groove 1 outer outflow.
On the other hand, processed as intermediate treatment water 37 from the processed water of urceolus influx 34 inflow urceolus sections 32, as processing water 13 from flowing out stream 8 to ultraviolet irradiation groove 1 outer outflow.By oxygenant injection device 36 oxygenants such as ozone or hydrogen peroxide are injected in the intermediate treatment water 37.By the ultraviolet ray of UV-lamp 2 irradiations, see through processed water 12 and ultraviolet ray through wall 33, the intermediate treatment water 37 of oxygenant has been sneaked in irradiation.Oxygenant absorbing ultraviolet in the intermediate treatment water 37 and generate the hydroxide radical free radical, the organism in the oxygenolysis intermediate treatment water 37.
By such processing, the processing water 14 that obtain that microorganism is inactivated, the oxidized processing water 13 that has decomposed of organism and microorganism has been inactivated.In sewage disposal department, sometimes reuse water is required the high deactivation grade of ratio sewage discharge water, require deodorization, decolouring etc. to reduce organism.By using the UV water treatment equipment of present embodiment, can by a device generate sewage discharge water namely process water 14 and reuse water namely process water 13 these two kinds process water, can reduce device area is set.
For controlling flow and the oxygenolysis grade of processing water 13, flow and the deactivation grade of processing water 14, the method that the exposure intensity of utilizing lamp control device 4 control UV-lamp 2 is arranged is by the method for opening the valve degree of opening valve degree and control open and close valve 10 of control valve device 11 each open and close valves 9 of control.In addition, by oxygenant injection device 36, the amount of the oxygenant of intermediate treatment water is injected in control.In the present embodiment although understand UV water treatment equipment based on a UV-lamp 2, but also can be such as embodiment 1 shown in Figure 3, use a plurality of UV-lamp.In this case, have by controlling the method for turning off the light, light a lamp to control ultraviolet irradiation amount of each UV-lamp among the UV-lamp group.And present embodiment also is applicable to the UV water treatment equipment of external lighting type.
[embodiment 3]
In conjunction with Fig. 6 embodiments of the invention 3 are described.Fig. 6 is the longitudinal section of the UV water treatment equipment of present embodiment.
Although present embodiment consists of in the same manner with embodiment 2, the UV water treatment equipment of present embodiment is to enclose photocatalyst 38 in urceolus section 32, removes the structure that oxygenant injects stream 35 and oxygenant injection device 36.
By a part of inflow and outflow stream 7 of the processed water 12 after the uviolizing of UV-lamp 2, remaining part flows into urceolus section 32 as intermediate treatment water 37 from urceolus influx 34.The intermediate treatment water 37 that flows into contacts the stream of inflow and outflow on one side 8 on one side with photocatalyst 38.At this moment, generated hydroxide radical free radical, the organism in the oxygenolysis intermediate treatment water 37 by the photocatalyst 38 after the uviolizing.
Present embodiment have can effectively utilize in the advantage of medium pressure mercury lamp.Middle medium pressure mercury lamp is different from Cooper-Hewitt lamp, the ultraviolet ray below wavelength 300nm, also generates wavelength 300nm above ultraviolet ray and visible light.Because the deactivation that the ultraviolet ray that wavelength 300nm is above and visible light are helpless to microorganism and the decomposition of oxygenant, so in embodiment 1 and embodiment 2, even medium pressure mercury lamp in using can not be utilized 300nm above ultraviolet ray and visible light.But, because photocatalyst not only can the ultraviolet ray of absorbing wavelength below 300nm, can also generate the hydroxide radical free radical by ultraviolet ray and the visible light of absorbing wavelength more than 300nm, so can be by effectively utilize ultraviolet ray and the visible light more than the 300nm with photocatalyst.
In addition, by medium pressure mercury lamp in using, utilize the ultraviolet ray of wavelength below 300nm to carry out the deactivation of microorganism, organic oxygenolysis is then utilized ultraviolet ray and the visible light of wavelength more than 300nm, share like this wavelength region may, a kind of UV water treatment equipment that can effectively apply flexibly wavelength characteristic can be provided.
Fig. 7 is illustrated in the specific absorption that sewage secondary is processed water middle-ultraviolet lamp and visible light.The percentage that specific absorption is absorbed by the test portion water sample when directly injecting in the test portion water sample of 1cm with ultraviolet ray or visible light represents.As shown in Figure 7, process in the water at sewage secondary, ultraviolet ray and the visible light of wavelength more than 300nm compared with the ultraviolet ray of wavelength below 300nm, and specific absorption is little, the difficult absorption.
Therefore, if irradiation is sent by middle medium pressure mercury lamp in the secondary treatment water ultraviolet ray and visible light then can form and make wavelength in the ultraviolet ray more than the 300nm and the radiation of visible light zone in the place away from middle medium pressure mercury lamp.Be arranged on this zone by the urceolus section 32 that will enclose photocatalyst 38, the ultraviolet ray of wavelength below 300nm can be used for the deactivation of microorganism of the processed water 12 of inner cylinder portion 31, with ultraviolet ray and the visible light organic oxygenolysis that be used for the intermediate treatment water 37 of urceolus section 32 of wavelength more than 300nm.
And, process water processed water in addition for sewage secondaries such as draining, water purification, rivers, because also be the tendency identical with tendency shown in Figure 7, so can be identical apparatus structure.
For controlling flow and the oxygenolysis grade of processing water 13 and flow and the deactivation grade of processing water 14, by the exposure intensity of lamp control device 4 control UV-lamp 2.In addition, by each open and close valves 9 of control valve device 11 control open valve degree and open and close valve 10 open the valve degree.In the present embodiment although understand UV water treatment equipment based on a UV-lamp 2, but also can use as described in Example 1 a plurality of UV-lamp.In this case, turn off the light, light a lamp to control ultraviolet irradiation amount by each UV-lamp among the control UV-lamp group.
Although Fig. 6 expression is the UV water treatment equipment of internal irradiation, present embodiment also goes for the UV water treatment equipment of external lighting type.
[embodiment 4]
In conjunction with Fig. 8 embodiments of the invention 4 are described.Fig. 8 is the longitudinal section of the UV water treatment equipment of present embodiment.
Present embodiment consists of similarly to Example 2, but the UV water treatment equipment of present embodiment is the structure of having enclosed photocatalyst 38 in urceolus section 32.
In embodiment 2, shine the ultraviolet ray of being sent by UV-lamp 2 at the oxygenant in the intermediate treatment water 37 of sneaking into urceolus section 32, the decomposing oxidation agent, when generating the hydroxide radical free radical, need the ultraviolet ray of wavelength below 300nm, but as shown in Figure 7, the ultraviolet specific absorption of 12 pairs of wavelength of processed water below 300nm is large.Therefore, the diameter of inner cylinder portion 31 can not be enlarged, the processing flow of processing water 14 can not be set significantly.
In embodiment 3, because in 32 inclosures of urceolus section photocatalyst 38 is arranged, also can utilize wavelength ultraviolet ray and the visible light 300nm more than little to the specific absorption of processed water 12, so can enlarge the diameter of inner cylinder portion 31.But, as described in [non-patent literature 1], be generally less than oxygenolysis amount based on the accelerating oxidation reaction based on the organic oxygenolysis amount of light-catalyzed reaction.Therefore, for guaranteeing certain oxygenolysis grade, need to reduce the flow velocity of intermediate treatment water 37, prolong ultraviolet irradiation time, can not set significantly the flow of processing water 13.
In the present embodiment, for obtaining the flow of large processing water 13 and processing water 14, utilize the hydroxide radical free radical that is generated by the photocatalyst 38 of enclosing in the urceolus section 32, the decomposing oxidation agent further generates the hydroxide radical free radical.Thus, can be with ultraviolet ray and the visible light decomposition that is used for oxygenant more than 300nm of the wavelength that generated by middle medium pressure mercury lamp.Therefore, the diameter of inner cylinder portion 31 can be enlarged, the processing flow of processing water 14 can be set significantly.In addition, because by increasing the injection rate of oxygenant, can promote the generation of hydroxide radical free radical, so can set significantly the processing flow of processing water 13.
For controlling flow and the oxygenolysis grade of processing water 13 and flow and the deactivation grade of processing water 14, by the exposure intensity of lamp control device 4 control UV-lamp 2.In addition, by the aperture of the valve of each open and close valves 9 of control valve device 11 control and the aperture of open and close valve 10.In addition, inject the amount of the oxygenant of intermediate treatment water by 36 controls of oxygenant injection device.In the present embodiment, although the UV water treatment equipment that is provided with based on a UV-lamp 2 is illustrated, as described in Example 1, also can use a plurality of UV-lamp.In this case, turn off the light, light a lamp to control ultraviolet irradiation amount by each UV-lamp among the control UV-lamp group.Although Fig. 8 expression is the UV water treatment equipment of internal irradiation, present embodiment also is applicable to the UV water treatment equipment of external lighting type.
[embodiment 5]
In conjunction with Fig. 9, Figure 10 embodiments of the invention 5 are described.Fig. 9 is the longitudinal section of the UV water treatment equipment of present embodiment, and Figure 10 is the sectional view shown in arrow C-C among Fig. 9.
Such as Fig. 9, shown in Figure 10, the ultraviolet irradiation groove 1 of drum is to be fixed with dull and stereotyped sealed structure at two ends, and it is protective tube 3 that the guard member cylindraceous that is formed by quartz is installed between the central part of flat board.In the protective tube 3 interior UV-lamp 2 that arrange, UV-lamp 2 is connected with lamp control device 4 by distribution.
Be provided with inflow stream 5 in ultraviolet irradiation groove 1, flow out stream 7.Flow into stream 5 and be arranged on the distolateral of ultraviolet irradiation groove 1, flow out the end side that stream 7 is arranged on ultraviolet irradiation groove 1.At outflow stream 7 open and close valve 10 is set.Central part in ultraviolet irradiation groove 1 arranges at least one oxygenolysis stream 41, and oxygenolysis stream 41 is communicated with ultraviolet irradiation groove 1 by influx 42.Oxygenolysis stream 41 is connected with oxygenant injection device 36 by the stream 35 that is used for the injection oxygenant, and oxygenolysis stream 41 is connected with the outflow stream 8 with open and close valve 43.Open and close valve 9, open and close valve 10, open and close valve 43 are connected with control valve device 11 by distribution, and are opened and closed by control valve device 11 controls.And, a plurality of oxygenolysis streams 41 and open and close valve 43 also can be set.
The apparatus for ultraviolet light treamtent of present embodiment can be by adding oxygenolysis stream 41, influx 42, flow out stream 8, open and close valve 43, stream 35, oxygenant injection device 36 in the ultraviolet irradiation groove 1 of drum, opens that communicating pores etc. is easy to be added operation and realize.
The direction of arrow among Fig. 9 represents flow direction, and processed water 12 flows in the ultraviolet irradiation groove 1 from flowing into stream 5, flows out from flowing out stream 7 as processing water 14.On the other hand, the intermediate treatment water 37 from influx 42 flows into the oxygenolysis stream 41 flows out from flowing out stream 8 as processing water 13.
In the situation that oxygenolysis stream 41 is made by ultraviolet permeable material, can be to intermediate treatment water 37 irradiation ultraviolet radiations in the oxygenolysis stream 41, similarly to Example 1, can by a device more effectively generate sewage discharge water namely process water 13 and reuse water namely process water 14 these two kinds process water.
If will net wait sintering on the parts with space the photochemical catalysis carrier of photocatalyst as oxygenolysis stream 41, then can to flow into the oxygenolysis stream from the gap of the photocatalyst of sintering inner for processed water 12.Enclose in the situation of photocatalyst 38 in the inside of oxygenolysis stream 41, even oxygenolysis stream 41 does not use ultraviolet permeable material, also the same manner as in Example 3, intermediate treatment water 37 is when contacting inflow on one side to outflow stream 8 on one side with photocatalyst 38, photocatalyst 38 by uviolizing generates the hydroxide radical free radical, and the organism that the centre is processed in the water 37 carries out oxygenolysis.
Making oxygenolysis stream 41 with ultraviolet permeable material, and at the oxygenolysis stream 41 inner photocatalysts 38 of enclosing, inject in the situation of oxygenant, in the same manner as in Example 4, to the ultraviolet ray that the oxygenant irradiation that is blended in the intermediate treatment water 37 is sent by UV-lamp 2, decomposing oxidation agent, generate the hydroxide radical free radical, the hydroxide radical free radical that utilization is generated by the photocatalyst 38 of enclosing oxygenolysis stream 41 inside, the decomposing oxidation agent can further generate the hydroxide radical free radical.
Turn off the light, light a lamp to control ultraviolet irradiation amount by each lamp among the control UV-lamp group.In addition, although Fig. 9 expression is the UV water treatment equipment of internal irradiation, present embodiment also is applicable to the UV water treatment equipment of external lighting type.

Claims (13)

1. UV water treatment equipment, it possesses:
Guard member, it is configured in the ultraviolet irradiation groove, sees through ultraviolet ray;
Ultraviolet source, it is arranged in this guard member, irradiation ultraviolet radiation;
The ultraviolet source control device, it is connected with this ultraviolet source;
The inflow stream of processed water, it is arranged at the axial distolateral of described ultraviolet irradiation groove;
Process first of water and flow out stream, its axial another that is arranged at described ultraviolet irradiation groove is distolateral, has the first open and close valve;
Process second of water and flow out stream, the axial central part that it is arranged at described ultraviolet irradiation groove has the second open and close valve; And
Control valve device, it controls the aperture of described the first open and close valve and the second open and close valve,
The protective tube that a plurality of drums are installed in the described ultraviolet irradiation groove of drum is used as described guard member, and the central shaft of described protective tube is vertical with the central shaft of described ultraviolet irradiation groove,
On each described protective tube, UV-lamp is set respectively and is used as described ultraviolet source,
Each described UV-lamp is connected with lamp control device by distribution, described lamp control device is controlled separately each described UV-lamp, control the exposure intensity of each described UV-lamp by described lamp control device, perhaps control turning off the light, lighting a lamp the time of each described UV-lamp
Arrange described first in same ultraviolet irradiation groove and flow out stream and described the second outflow stream, thereby obtain the processing water of a plurality of different quality grades with a device.
2. UV water treatment equipment as claimed in claim 1, wherein:
Axial central part in described ultraviolet irradiation groove arranges the oxygenolysis stream, perhaps arranges with described second to flow out the oxygenolysis stream that stream is communicated with.
3. UV water treatment equipment, it possesses:
Ultraviolet irradiation groove, it has the stream of inflow and flows out stream, and the processed water that flows into from this inflow stream circulates described ultraviolet irradiation groove;
Ultraviolet source, it is to described processed water irradiation ultraviolet radiation;
Guard member, it prevents that described processed water from directly contacting with ultraviolet source, and sees through ultraviolet ray; And
More than one branch stream, it is arranged on described inflow stream and flows out between the stream, and extract out from ultraviolet irradiation groove and process water,
Described UV water treatment equipment carries out the uviolizing of different time to the processed water in the ultraviolet irradiation groove between described branch stream and the outflow stream,
The protective tube that a plurality of drums are installed in the described ultraviolet irradiation groove of drum is used as described guard member, and the central shaft of described protective tube is vertical with the central shaft of described ultraviolet irradiation groove,
On each described protective tube, UV-lamp is set respectively and is used as described ultraviolet source,
Each described UV-lamp is connected with lamp control device by distribution, described lamp control device is controlled separately each described UV-lamp, control the exposure intensity of each described UV-lamp by described lamp control device, perhaps control turning off the light, lighting a lamp the time of each described UV-lamp, in same ultraviolet irradiation groove described outflow stream and described branch stream are set, thereby obtain the processing water of a plurality of different quality grades with a device.
4. UV water treatment equipment as claimed in claim 3, wherein:
Axial central part in described ultraviolet irradiation groove arranges the oxygenolysis stream, and the oxygenolysis stream that is communicated with described branch stream perhaps is set.
5. UV water treatment equipment, it possesses:
Guard member, it is configured in the ultraviolet irradiation groove, sees through ultraviolet ray;
Ultraviolet source, it is arranged in this guard member, irradiation ultraviolet radiation;
The ultraviolet source control device, it is connected with this ultraviolet source;
The inflow stream of processed water, it is arranged at the axial distolateral of described ultraviolet irradiation groove;
Process first of water and flow out stream, its axial another that is arranged at described ultraviolet irradiation groove is distolateral, has the first open and close valve;
The oxygenolysis stream, the axial central part that it is arranged at described ultraviolet irradiation groove, have with described ultraviolet irradiation groove in the influx that is communicated with;
Process second of water and flow out stream, it is connected with this oxygenolysis stream, and has the second open and close valve; And
Control valve device, it controls the aperture of described the first open and close valve and the second open and close valve,
The protective tube that a plurality of drums are installed in the described ultraviolet irradiation groove of drum is used as described guard member, and the central shaft of described protective tube is vertical with the central shaft of described ultraviolet irradiation groove,
On each described protective tube, UV-lamp is set respectively and is used as described ultraviolet source,
Each described UV-lamp is connected with lamp control device by distribution, described lamp control device is controlled separately each described UV-lamp, control the exposure intensity of each described UV-lamp by described lamp control device, perhaps control turning off the light, lighting a lamp the time of each described UV-lamp
Arrange described first in same ultraviolet irradiation groove and flow out stream and described the second outflow stream, thereby obtain the processing water of a plurality of different quality grades with a device.
6. such as claim 2,4 or 5 described UV water treatment equipments, wherein:
Described oxygenolysis stream is that ultraviolet ray sees through part.
7. such as claim 2,4 or 5 described UV water treatment equipments, it is provided with:
The oxygenant generating unit, it generates ozone or hydrogen peroxide; And
Oxygenant injects stream, and it is connected with described oxygenolysis stream, injects described ozone or hydrogen peroxide.
8. such as claim 2 or 4 described UV water treatment equipments, wherein:
In described oxygenolysis stream, enclosed photocatalyst.
9. UV water treatment equipment as claimed in claim 6, wherein:
In described oxygenolysis stream, enclosed photocatalyst.
10. UV water treatment equipment as claimed in claim 7, wherein:
In described oxygenolysis stream, enclosed photocatalyst.
11. UV water treatment equipment as claimed in claim 8, wherein:
Described oxygenolysis stream is formed by the carrier of photocatalyst that has kept photocatalyst.
12. UV water treatment equipment as claimed in claim 9, wherein:
Described oxygenolysis stream is formed by the carrier of photocatalyst that has kept photocatalyst.
13. UV water treatment equipment as claimed in claim 10, wherein:
Described oxygenolysis stream is formed by the carrier of photocatalyst that has kept photocatalyst.
CN 200810183751 2007-12-19 2008-12-15 Ultraviolet water treatment apparatus Expired - Fee Related CN101462781B (en)

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