CN1720198A - Method and apparatus for liquid purification - Google Patents
Method and apparatus for liquid purification Download PDFInfo
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- CN1720198A CN1720198A CN 200380105058 CN200380105058A CN1720198A CN 1720198 A CN1720198 A CN 1720198A CN 200380105058 CN200380105058 CN 200380105058 CN 200380105058 A CN200380105058 A CN 200380105058A CN 1720198 A CN1720198 A CN 1720198A
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Abstract
The invention relates to a method for treating liquids, comprising steps of irradiating a flow of air and a flow of the liquid to be treated at the same time in order to create ozone in both the air and the liquid, mixing the ozone-containing air with the liquid to be treated up-streams the liquid irradiating point, irradiating the flow of liquid containing the in-mixed ozone in order to break down the ozone in the liquid for producing free radicals.
Description
Technical field
The present invention relates to a kind ofly come the especially system of water of decontaminating liquid by the pollutent in the oxidation liquid.
Background of invention
Exist the demand that increases day by day for liquid especially water purification.Need water is purified and decontamination in many application scenarios, several occasions wherein comprise swimming pool and recuperate bathing pool, greenhouse, stock-farms, cooling tower, hospital or the like.Being used for that under most of application scenarios water is purified conventional art with decontamination comprises and using and water blended chemical.Because environmental factors and chemical need reduce the use of chemical to the influence of environment, humans and animals as far as possible.
Make a kind of method of water purification/decontamination be to use ozone.Some countries have developed some methods of purifying waste water, wherein with ozone (O
3) insert in drinking device and the Bathing apparatus, also make ozone solution in water be used for to article clean, sterilization and sterilization.Because ozone, oxygen, hydrogen peroxide and UV radiating this means that in conjunction with producing the more freedom base reaction process is faster and more effective.
Passivation by means of the microorganism of ozone and free radical is considered to oxidizing reaction.The top layer of microorganism is earlier under attack.Within membrane/cell wall, ozone and free radical can destroy the nuclear substance of cell/virus/spore inside.With regard to most of microorganism, passivation reaction can take place in several minutes, and this depends on the quantity of the dosage and the formed free radical of ozone.
Although ozone dissolves in cold water, yet as in air, ozone can decompose (consumption) fast, and this can produce a large amount of different free radical and stable more or less byproducts, for example aldehydes, bromate and carboxylic acids.The degree of decomposing depends on pH value, the material that is exposed and temperature.Some material can easily be fallen by ozone layer destroying.Yet most material and molecule can be by more effectively oxidations of free radical, and these free radicals form by ozone with through the medium of ozonize.
International patent application No.WO 96/20017 discloses a kind of very effective method that has adopted free radical in oxidising process.This method utilizes the UV radiation to produce ozone in air and liquid, comes radiation ozone with the base that gains freedom with certain wavelength, the pollutent in oxidable air of this free radical or the liquid.In order to improve the output of free radical, catalyzer such as titanium dioxide have been adopted.The applicant of above-mentioned patent application has for example obtained good water purification/clean effect in cooling tower, swimming pool, greenhouse, this is some listed application scenarios.The application of this patented method makes it possible to remove fully chemical in these application scenarios.
Yet, in some application scenario, WO 96/20017 is introduced be used to purify waste water or the treatment capacity of equipment in the unit time of other liquid aspect have restriction on the capacity.Carried out test and reduced flowing of process UV source of radiation, during water consumption is nonevent, also used this equipment, and the water that purified is stored in the transitional tank.The shortcoming that is had is like this, must have extra available space to hold transitional tank.This may be impracticable for some application scenario, and uses and a large amount of human consumer for other, and this is not a best solution.This also needs the human consumer equipment can be arranged to only take minimum floor space.
Found that in the water system of buildings another has the application scenario of specific question.This is relevant with legionella, legionella is a kind of hydrobiont, when the form with suspended particulates sucks, it can cause infecting, this is a big problem in worldwide, if be that very weak patient receives bacterium by for example spray thrower again, this will be special trouble in hospital.If tap water is warm inadequately, bacterium can grow up strong and sturdy and breeding uncontrollably.The main terms of settlement of this problem is to improve and control as far as possible the temperature of water, to prevent the appearance of legionella.The chemical that can kill these bacteriums is normally out of use in these application scenarios, because they also can produce harm to human body.
For some application scenario, aforesaid method has some shortcomings.If liquid is by severe contamination, the amount of ozone may be not enough to produce the amount of the required free radical of the pollutent that is used for removing fully liquid.This situation may be to cause owing to being used for being absorbed or stopping by the pollutent in the liquid or other particles/materials in the ozoniferous quantity of radiant energy of liquid.For example in brinish was handled, lot of energy can be absorbed by halogen.Therefore do not have enough ozone generation, and then do not have enough free-radical generating that is used for purification process.Also presumable situation is to be used for ozoniferous amount of oxygen deficiency.
In view of the foregoing, adopting free radical will be favourable as main purification oxidants and with the content that simple and economic mode improves ozone.For the application of handling salt or slightly salty, it will be favourable adopting the continous way system.
Therefore, in this technical field, need to improve.
The invention brief introduction
The objective of the invention is to adopt according to the described system of the characteristic of claim 1 to 5 and solve the problems referred to above.Dependent claims has covered the preferred embodiments of the present invention.
According to a main aspect of the present invention, it is characterized in that being used for the method for treatment liq, comprise step: shine airflow and pending liquid flow simultaneously in air and liquid, all to produce ozone, to contain the air of ozone and pending liquid mixing in the upstream of liquid point of irradiation, irradiation contains the liquid flow of sneaking into ozone, so that the ozone in the liquid is decomposed and the generation free radical.
According to a further aspect in the invention, it is characterized in that, when ozone decomposes with liquid exposure at least a catalyzer, to be used to improve the amount of free radical.
According to another aspect of the invention, it is characterized in that this mixing obtains by the ejector effect in the liquid flow.
The present invention has some advantages.By shining air and liquid simultaneously, just can in air and liquid, all produce ozone, thereby avoid making ozone generation source separately with identical UV radiating light source.The air that will contain ozone then supplies in the point of irradiation liquid upstream stream, makes ozone and other composition mix with pending liquid phase together.Like this, the ozone in the liquid begins to react to a certain extent with pollutent.Irradiation contains the liquid of ozone then, and ozone that generates in liquid and the ozone that is mixed in the liquid are decomposed, and forms a large amount of free radicals, and these free radicals are carried out main purification/work of treatment.In a word, in liquid, can generate/contain than more substantial ozone when only coming irradiating liquids with the UV light generating device.This is especially correct when comparing with the oxygen level in the water and air for example, because air ratio water includes the amount of much bigger oxygen.The increase of ozone can be simply and efficient manner realize, do not need to adopt other ozone generating-device or pretreating containers.Owing to increased ozone, thereby eliminated noted earlier owing to quantity of radiant energy is absorbed/stops the insufficient problem of the ozone generation that causes.This production process is simultaneous, and promptly the ozone in container is decomposed with in the generation free radical, and the UV light generating device has all produced ozone in the liquid in the air of UV light generating device and in container.
In order further to increase the amount of free radical, for example be provided with the catalyzer that can increase free base unit weight in the irradiated container of liquid in process points.Catalyzer can comprise titanium dioxide, and can be arranged on the internal surface of container.According to an embodiment, container can be made of titanium, and perhaps has titanium lining at least, and wherein titanium lining has produced titanium dioxide through the processing of suitable mode.So just produced very large catalytic surface with simple and efficient manner.In addition, titanium has the advantage of the highly corrosive environments that can resist internal tank.
Preferred parts such as the Venturi tube that adopts throttle part or similarly can reduce inlet part mixed, and this parts can produce negative pressure, and then produce ejector effect.Therefore, do not need special device or parts with ozone and liquid mixing.The amount of ozone to be mixed can easily be regulated through the airflow of UV light generating device by control.
According to a further aspect in the invention, it relates to and is used for the especially system of water of treatment liq, comprise the through-flow device that is provided with the entrance and exit that is used for liquid and be located at the interior UV light generating device of through-flow device, described UV light generating device can produce ozone in through-flow liquid, and ozone decomposition and produce free radical simultaneously, it is characterized in that, be provided with removable web member at the entrance and exit place of through-flow device.
According to a further aspect in the invention, the system is characterized in that be provided with at least two through-flow devices, each through-flow device is preferably designed to elongated tubular.
According to another aspect of the invention, the UV light generating device is located at an end of elongated tubular, is adjacent to described UV generation device at least in the inside of through-flow device and is provided with pottery.
According to a preferred embodiment of the present invention, at least two in the described through-flow device in series are provided with, wherein the first through-flow device is connected to the inlet tube that is used for pending liquid, the most last through-flow device is connected to the outlet pipe that is used for treated liquid, and/or they are connected on the inlet tube that is used for pending liquid and the outlet pipe that is used for treated liquid in parallel.
According to a further aspect in the invention, this through-flow device be arranged on the water out that uses for the people such as spray header near.
The present invention has some advantages.By removable device is set, just can be very easy to and change easily the throughput of the system that flows through according to capacity requirement on the through-flow device.The through-flow device that one or several can be had the UV radial burner is placed on ground, front and back each other, promptly directly connects or connects by elbow, can make system can be adapted to the available space like this, and for example can not take too many floor space.For the performance of the system of significantly improving, one or more through-flow devices can be provided with in parallel, wherein first inlet/outlet is connected on the inlet tube, and second inlet/outlet is connected on the outlet pipe.
By come the parts of using system with series connection and/or mode in parallel, just can carry out almost unconfined variation to throughput.Configuration structure several in parallel in the system can be together in series, so that highly polluted water is repeatedly handled.System also can measured parts and accessory, and reduces the demand to particular component, and the through-flow device that promptly has the sl. of lamp can be combined with standard elbow and the joint that is connected on the pending water source.
When the through-flow device is connected to the outlet that is used for spray thrower, just can obtain to prevent peculiar advantage by infection of legionella.Because the danger of legionella is big and in these systems that its elimination is relatively more difficult in large-scale running water system, so the present invention has eliminated the risk that retains in any this bacterium in the water system.This has remarkable advantages for existing solution, thereby has eliminated problem fully under the situation of not using any chemical and bringing any risk can not for the user of these intrasystem water.
To concrete introduction of the present invention and in conjunction with the accompanying drawings, can know the advantage of these and others of the present invention by hereinafter.
Description of drawings
To be specifically introduced the present invention in conjunction with the accompanying drawings hereinafter, wherein
Fig. 1 is the schematic side elevation of first embodiment of the invention,
Fig. 2 is the schematic side elevation of a kind of modification embodiment illustrated in fig. 1,
Fig. 3 has shown that being contained in the through-flow device that being used in a second aspect of the present invention handle contaminated liquid is central module,
Fig. 4 has shown the different parts that can be included in according in the invention shown in Figure 3,
Fig. 5 shown and used parts shown in Figure 3 realizing an example of the present invention,
Fig. 6 shown these parts application another example and
Fig. 7 has shown the unitary installation of the decontamination that is connected with spray header.
Specific descriptions of the present invention
Fig. 1 has shown one embodiment of the present of invention.It comprises the processing vessel 10 that has inlet 12 and outlet 14 and can be connected to the delivery system that is used for pending liquid.Basically total inner surface all is provided with titanium, or separate space is made of titanium, or is provided with titanium layer on internal surface, and titanium layer is through handling and obtain titanium dioxide, to improve the amount of the free radical that is produced by the UV radiation.The processing that is used to obtain titanium dioxide for example can be finished by etching titanium pipe or titanium layer.Titanium also has the advantage that the corrosive atmosphere in the container is had very strong resistivity.
The pipe of being made by silica glass 16 extends through the inside of container between two relative walls 18,20.Be provided with UV radiating light source 21 in silica tube, it extends between the relative wall of separate space.Light source can be connected on the suitable power supply.
End at silica tube is provided with separate space 22, and it has the passage 24 that communicates with the inside of silica tube.Separate space also is provided with induction trunk 26, and this passage is provided with the check valve 28 that only allows the air admission separate space.Around the silica tube the other end, be provided with second separate space 30.This second separate space 30 also is provided with the passage 32 that communicates with the inside of silica tube.
This equipment works as described below.The UV radiating light source is connected, and it is selected to the wavelength that can send in the 180-400 nanometer range, and the wavelength that especially sends 183.7 nanometers is to be used for changing the oxygen of medium into ozone molecule (O
3), and the wavelength that sends 254 nanometers to be to be used to that ozone molecule is decomposed, this will be introduced hereinafter.
Air enters into silica tube by the check valve in first separate space, and round the UV luminous source.Irradiation causes oxygen molecule to be transformed into ozone.Because differential air seldom flows along the whole length of UV luminous source, so it is exposed to and reaches considerable time in the radiation, has guaranteed to produce a large amount of ozone.Simultaneously, some ozone are broken down into free radical by the radiation wavelength that can decompose ozone to free radical.
Pending liquid supplies in the container 10 that has surrounded silica tube 16 by liquid inlet 12.Therefore the throttling part 36 of the inflow catheter 38 of Venturi tube type owing to flow through has produced negative pressure, thereby will be drawn in the liquid flow by conduit 34 and check valve 40 from the ozone in the silica tube.The liquid that enters into container so just is mixed with ozone.
In addition, UV light also can produce ozone to the irradiation of liquid in container.Therefore, the liquid in the container includes the ozone that is mixed into wherein, and the ozone that produces in container through irradiation.Liquid in the container is shone by the radiation of 254 nano wave lengths, causes the ozone in the liquid to decompose, and has formed hydroxyl.This is simultaneous generating process, promptly produces in the free radical in liquid, and the UV light generating device has all produced ozone in air and liquid.The catalysis characteristics of the titanium dioxide on the container inner wall has further increased the amount of free radical.
By selecting the suitable airflow of the system that flows through, just can be adjusted in the amount of inflow place and liquid mixing ozone together, make its performance consistent with the UV radiating light source, with the amount of reduction residue ozone, thereby prevent that ozone from leaving container through outlet.
Fig. 2 has shown the modification of equipment shown in Figure 1, and it can use with the modular system of being introduced in Swedish patent application No.0202987-3, and this patent is incorporated herein by reference.In this application, the part of equipment shown in Figure 2 can replace described two interconnecting parts as application 0202987-3.Equipment shown in Figure 2 can connect by different ways, and can be by series connection and in parallel being connected on the other parts.
The present invention according to second aspect present invention shown in Fig. 3 to 7 has utilized the UV lamp that can launch the light that is in the special spectrum.In the UV radiation of pending liquid exposure in spectral distribution with 180-400 nanometer range.Especially the wavelength of 183.7 nanometers can be transformed into the oxygen in the medium ozone molecule (O
3).Formed ozone molecule is simultaneously by the especially radiolysis of 254 nano wave lengths in the above-mentioned wavelength region.Simultaneously, formed O
3Be broken down into atomic oxygen.In order to improve at free radical especially OH
-Efficient in the production process of free radical has added oxide compound as catalyzer.
The present invention has adopted with free radical and has come the especially principle of water of decontaminating liquid.As shown in Figure 3, this system comprises a quite straight pipe 110 at least.This pipe preferably has other material of titanium lining to make by titanium or inboard.Titanium on the pipe inboard is through handling, so that obtain ceramic titanium oxide.Titanium dioxide serves as catalyzer in the forming process of free radical, promptly titanium dioxide has improved the amount of the free radical that is produced in the unit time.In a kind of modification, adopted plastics tubing with titanium dioxide lining.Certainly can also adopt the material of other high corrosion resistance, and the catalyzer of employing described in WO 96/20017, yet experience shows, the pipe that adopts the titanium pipe or have a titanium lining can provide the good resistivity at the caused highly corrosive environments of purification/decontamination.
In the embodiment shown in fig. 3, an end of pipe is provided with end wall 112.In end wall, be provided with passage 114, in this passage, be provided with and have the UV radiating light source 116 that extends in the passage 114, so that the UV radiation of 185 nanometers and 254 nano wave lengths to be provided around shell 18.These wavelength about in water, produce ozone decompose ozone to simultaneously then free radical aspect have excellent characteristic.Shell preferably is provided with light and penetrates wall part 120, and whether it can demonstrate lamp and work to make things convenient for the user.Be provided with vision slit in the past in pipe, it is deposited the thing obstruction easily, but also can seepage.Also provide the driver element of the unshowned UV of being used for lamp.Also provide the unshowned control unit that is used to control one or more driver elements.The Design and Features of driver element and control unit is a routines for a person skilled in the art, introduces no longer more specifically.
Be provided with first inlet/outlet 122 in the place of tube wall adjacent end wall, wherein be provided with the suitable flange 124 or other the suitable web member that are used for being connected on other pipe in the ingress.The inboard of pipe is used to improve the amount of the free radical that is produced by the UV radiation through handling to obtain titanium dioxide.The processing that is used for obtaining titanium dioxide for example can realize by etching titanium pipe or titanium layer.Be provided with second inlet/outlet 126 at the pipe end opposite with the UV lamp, it is provided with suitable flange 128 or other web member that is used for being connected on other pipe.
As shown in Figure 4, this system comprises for example being the elbow 130 of 90 ° or 180 °, yet also may be other angle certainly.In addition, although these parts are not provided with any UV radiation devices, it still preferably is made of titanium or has titanium lining.Fig. 4 has also shown and has been used for several connection acknowledgment copies that system component is combined, for example can interconnect and connect two straight tubes by second inlet/outlet with them, perhaps shown in label 132, directly connect, perhaps via the elbow that shown in label 134, uses 90 °, perhaps via the elbow that shown in label 136, uses 180 °.
Fig. 5 and 6 has shown " parallel connection " system, and wherein two straighttube parts 132,134,136 that are provided with the UV lamp interconnect each other at their the second inlet/outlet place, therefore have " adverse current " in a pipe in fact therein.Several settings abreast in these interconnecting tubes, first inlet/outlet 122 of one of them interconnecting tube is connected to shared inlet tube 140, and first inlet/outlet of other interconnecting tube is connected to shared outlet pipe 142.In this case, pending water is supplied with by inlet tube 140, and concurrently by interconnecting tube 132, wherein has the UV lamp of two pipes that water is shone, and the other end of inlet tube is by shell wall 144 sealings.Water is supplied with by water outlet pipe 142 then.Equally, exit end is by shell wall 144 sealings.
This configuration makes it possible to realize the capacity that increases, and this is because according to application scenario and capacity requirement, can connect a large amount of pipes that includes the UV radiation devices, also makes and can use wall and top ceiling to come line system.In other words, only need to use considerably less floor space, this is very important for limited application scenario, space.Adopt these parts can also be further easy to adapt to existing space layout to be used, do not assemble purification system and do not need to rebuild the space.
Fig. 6 has shown another example, and wherein three unit in parallel are connected on main-inlet and the outlet pipe, and these unit can be positioned on wall and the top ceiling, also can be placed near the corner.Therefore, this system is that non-normal open is used.Should be appreciated that without departing from the scope of the invention, can adopt other design of conduit system parts.
It is also understood that the lamp that can adopt different capacity in this article, and can add other oxygen,, and then increase the amount of free radical so that increase the amount of ozone by proper device.When water during by severe contamination, perhaps in the time need a large amount of free radicals being arranged in water, what can also imagine is, can adopt near the Vltrasonic device that places the UV lamp.The ultrasonic wave of high amplitude can produce free radical and destroy pollutent.
A concrete application of system of the present invention is to be used for preventing the legionella relevant with spray thrower, and spray thrower is the potential infection point, and this is to infect because can cause when bacterium is inhaled into the form of suspended particulates.In the embodiment shown in fig. 7, comprise that the pipe 170 of aforesaid UV-lamp is connected to the exit of the water tap 172 in spray thrower or the similar water outlet.Water flowing pipe from water tap is subjected to the irradiation of UV lamp herein, thereby has produced ozone, decomposes ozone to free radical simultaneously, and free radical can react with legionella and it be destroyed.The inboard titanium dioxide of pipe can increase the amount of free radical.The lifetime that should be pointed out that free radical in this article is very short, even therefore free radical can flow out from spray header 174, does not also have any danger.Introducing has been got rid of legionella fully according to sterilisation system of the present invention and has been diffused into danger in the human body.What should also be pointed out that is, utilized in the equipment of UV light source in major part, in that for example the reason because of energy expenditure is only not cut between the usage period, equipment of the present invention is then opposite, light is anastomosing always, to guarantee not having legionella and to stop through equipment.This is practicable, because for this concrete application, it only needs low-down energy expenditure.
As a kind of alternative, pipe 176 can hand over the inlet of warm water 178 to link to each other with water tap 170 certainly, promptly is in water tap before but coupled.
Should be understood that it is non-limiting example of the present invention that content shown in the foregoing description and the accompanying drawing should be considered as, protection scope of the present invention is defined by the claim of this patent.
Claims (21)
1. method that is used for treatment liq comprises step:
-shine airflow and pending liquid flow simultaneously, so that in air and liquid, all produce ozone,
-air that contains ozone is mixed with pending liquid phase,
-irradiation contains the liquid flow of sneaking into ozone, produces free radical so that the ozone in the liquid decomposes.
2. method according to claim 1 is characterized in that, described method also comprises step: make liquid exposure at least a catalyzer when ozone decomposes, so that increase the amount of free radical.
3. method according to claim 1 and 2 is characterized in that, the UV radiation that emission is used for ozone decomposition and pollutent has the wavelength of 245 nanometers to 400 nanometers.
4. method according to claim 3 is characterized in that, emission is used for the wavelength that the UV radiation of ozone decomposition has 254 nanometers.
5. each described method in requiring according to aforesaid right is characterized in that described mixing obtains by the ejector effect in the liquid flow.
6. one kind is used for the equipment that method according to claim 1 is come treatment liq, the UV luminous source of the inside that comprise container, can shine described container with the entrance and exit that is used for pending liquid, and the air guiding device of being located at described internal tank, described air guiding device is connected on the air source, and is connected to by mixing device on the inlet conduits of pending liquid.
7. equipment according to claim 6 is characterized in that described air guiding device comprises the separate space that is separated by silica glass and internal tank, and described UV light irradiation apparatus is arranged in the described separate space or near it.
8. equipment according to claim 6 is characterized in that, is being provided with catalyzer on the total inner surface basically.
9. equipment according to claim 8 is characterized in that described catalyzer comprises titanium dioxide.
10. require each described equipment in 6 to 9 according to aforesaid right, it is characterized in that described mixing device comprises the throttle part that is positioned at the ingress, the ejector effect that described throttle part can produce in entering the air/ozone of liquid flow.
11. especially equipment of water of treatment liq that is used for according to claim 6, also comprise the through-flow device that is provided with the entrance and exit that is used for liquid and be located at the interior UV light generating device of described through-flow device, described UV light generating device can produce ozone in through-flow liquid, simultaneously can ozone decomposition to produce free radical, it is characterized in that, be provided with removable web member at the entrance and exit place of described through-flow device.
12. system according to claim 11 is characterized in that, is provided with at least two through-flow devices.
13. system according to claim 12 is characterized in that, described through-flow device in series is provided with, and wherein the first through-flow device is connected to the inlet tube that is used for pending liquid, and the most last through-flow device is connected to the outlet pipe that is used for treated liquid.
14., it is characterized in that at least two in the described through-flow device are connected to inlet tube that is used for pending liquid and the outlet pipe that is used for treated liquid in parallel according to each described system in the claim 12 to 13.
15. require each described system in 11 to 14 according to aforesaid right, it is characterized in that described through-flow device is designed to elongated tubular.
16. system according to claim 15 is characterized in that, described UV light generating device is located at an end of described elongated tubular.
17. according to each described system in the aforementioned claim 11 to 16, it is characterized in that, be adjacent to described UV light generating device at least in the inside of described through-flow device and be provided with pottery.
18. system according to claim 17 is characterized in that, described pottery is a titanium dioxide.
19., it is characterized in that described through-flow device is located at near the water out of people's use such as the spray header according to each described system in the claim 11,15 to 18.
20. system according to claim 19 is characterized in that, described through-flow device is located between water tap and the water out.
21. system according to claim 19 is characterized in that, described through-flow device is located at the warm water pipeline and is connected between the water tap of water out.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH02029783 | 2002-10-09 | ||
| SE0202978A SE0202978D0 (en) | 2002-10-09 | 2002-10-09 | Liquid purification system |
| CH03016045 | 2003-06-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1720198A true CN1720198A (en) | 2006-01-11 |
Family
ID=20289213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200380105058 Pending CN1720198A (en) | 2002-10-09 | 2003-10-08 | Method and apparatus for liquid purification |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1720198A (en) |
| SE (1) | SE0202978D0 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962213A (en) * | 2010-10-21 | 2011-02-02 | 东南大学 | Energy-saving multitube photochemical excitation/oxidation water advanced treatment device |
| WO2014113917A1 (en) * | 2013-01-22 | 2014-07-31 | Nestec S.A. | Liquid purification apparatus and method |
-
2002
- 2002-10-09 SE SE0202978A patent/SE0202978D0/en unknown
-
2003
- 2003-10-08 CN CN 200380105058 patent/CN1720198A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962213A (en) * | 2010-10-21 | 2011-02-02 | 东南大学 | Energy-saving multitube photochemical excitation/oxidation water advanced treatment device |
| WO2014113917A1 (en) * | 2013-01-22 | 2014-07-31 | Nestec S.A. | Liquid purification apparatus and method |
| CN105073647A (en) * | 2013-01-22 | 2015-11-18 | 雀巢产品技术援助有限公司 | Liquid purification apparatus and method |
| US10329170B2 (en) | 2013-01-22 | 2019-06-25 | Nestec S. A. | Liquid purification apparatus and method |
Also Published As
| Publication number | Publication date |
|---|---|
| SE0202978D0 (en) | 2002-10-09 |
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