CN112892255A - Device for generating liquid containing ozone-containing fine bubbles - Google Patents
Device for generating liquid containing ozone-containing fine bubbles Download PDFInfo
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- CN112892255A CN112892255A CN202010056015.5A CN202010056015A CN112892255A CN 112892255 A CN112892255 A CN 112892255A CN 202010056015 A CN202010056015 A CN 202010056015A CN 112892255 A CN112892255 A CN 112892255A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
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Abstract
The invention provides a device for generating liquid containing ozone-containing micro-bubbles, which comprises a micro-bubble generating unit (20) for generating nano-scale ozone-containing micro-bubbles by introducing ozone-containing gas generated by an ozone generator (11) into the liquid. The fine bubble generating unit (20) comprises a gas discharge head (23) having a plurality of fine pores with a pore diameter of 2.5[ mu ] m or less and a vibrator (24a) for applying vibration to the gas discharge head (23), and the fine bubble generating unit is configured to apply vibration with a frequency of 30kHz or more and an amplitude of 1mm or less to the gas discharge head (23) immersed in the liquid storage tank (21) while continuously applying vibration with a frequency of 1 kHz or more and an amplitude of 1mm or less to the gas discharge head (23)3Ozone-containing gas is discharged from a gas discharge head (23) into the liquid in such a manner that/minute)/(vibration frequency Hz of a vibrator (24a) ≦ 300. Thereby, the ozone introduced into the liquid can be preservedFor a certain period of time.
Description
Technical Field
The present invention relates to an apparatus for generating a liquid containing ozone-containing fine bubbles by introducing an ozone-containing gas into the liquid.
Background
Ozone water having an ozone concentration of 2mg/l, which is obtained by dissolving ozone in water, is used for sterilization of various treatment liquids, disinfection of foods, and the like, and is expected to be effectively used in the medical field in the future. Such ozone water is produced by dissolving an ozone-containing gas in water by a method such as foaming.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open No. 2014-195799.
Disclosure of Invention
Technical problem to be solved by the invention
However, since ozone is an unstable substance, ozone dissolved in water is easily decomposed and sometimes disappears within several seconds depending on conditions such as water temperature and pH. Therefore, at present, an ozone water generator is installed at an ozone water use site, and the ozone water needs to be used after generation of ozone water until the ozone concentration is not reduced, which causes a problem that the time from generation to use of ozone water is limited.
Accordingly, an object of the present invention is to provide a device for generating a liquid containing ozone fine bubbles, which can maintain ozone introduced into the liquid for a certain period of time.
Means for solving the problems
In order to solve the above problems, a first aspect of the present invention provides an apparatus for generating a liquid containing ozone-containing fine bubbles by introducing an ozone-containing gas into the liquid, the apparatus comprising: an ozone-containing gas generation unit that generates an ozone-containing gas; and a fine bubble generation unit that generates ozone-containing fine bubbles on a nanometer scale by introducing the ozone-containing gas generated by the ozone-containing gas generation unit into a liquid, the fine bubble generation unit including: a gas discharge head having minute holes immersed in a liquid; an ozone-containing gas supply unit that supplies an ozone-containing gas to the gas discharge head; and a vibrator for continuously applying vibration to the gas discharge head which is discharging ozone-containing gas into liquid, the diameter of the micro-pores of the gas discharge headIs 2.5[ mu ] m]Hereinafter, the frequency of the vibration applied to the gas discharge head by the vibrator is 30000[ Hz ]]Above, amplitude of 1[ mm ]]Hereinafter, the apparatus for generating the ozone-containing microbubble-containing liquid adjusts the supply amount of the ozone-containing gas supplied to the gas discharge head so that (the amount of ozone-containing oxygen gas discharged from 1 of the fine pores [ μm ]3Per minute]) /(frequency of vibration of the vibrator [ Hz ]])≤300。
ADVANTAGEOUS EFFECTS OF INVENTION
As described above, the apparatus for producing a liquid containing ozone-containing microbubbles according to the first aspect of the present invention satisfies the requirement (emission amount [ μm ] of ozone-containing gas emitted from 1 of the micropores)3Per minute]) /(frequency of vibration of the vibrator [ Hz ]]) The pore diameter of the gas release head is 2.5[ mu ] m in a manner of less than or equal to 300]The ozone-containing gas is discharged from the following micropores at a frequency of 30000[ Hz ] applied to the gas discharge head]Above, amplitude of 1[ mm]The following vibrations are divided into fine bubbles and released into the liquid, and the fine bubbles in the liquid undergo brownian motion while gradually contracting, so that the ozone-containing fine bubbles in the order of nanometers can be held in the liquid.
As described above, by retaining the ozone-containing gas introduced into the liquid in the liquid as fine bubbles of nanometer order in the liquid, it is possible to retain ozone in the liquid for a longer period of time than in the case of conventional ozone water in which an ozone-containing gas is dissolved in water, and therefore, there is no need to provide a device for generating a liquid containing fine bubbles of ozone at an ozone treatment site, and an effect of improving the degree of freedom of an ozone treatment operation can be obtained.
Drawings
FIG. 1 is a schematic configuration diagram showing an embodiment of an apparatus for generating a liquid containing ozone fine bubbles according to the present invention.
Description of the reference numerals
1 apparatus for producing ozone-containing microbubble-containing liquid
10 ozone-containing gas generating unit (ozone-containing gas supplying unit)
11 ozone generator
12 oxygen cylinder
13 gas supply pipe
14 pressure control valve
15 flow control valve
20 micro-bubble generating unit
21 liquid storage tank
22 gas supply header
23 gas release head
23a head body
23b connecting piece
24 vibration applying unit
24a vibrator
m1, m2 metal block
PE piezoelectric elements.
Detailed Description
The following describes embodiments with reference to the drawings. FIG. 1 shows a schematic configuration of an apparatus for generating an ozone-containing microbubble-containing liquid according to the present invention. As shown in fig. 1, the generation apparatus 1 includes: an ozone-containing gas generation unit 10 that generates an ozone-containing gas; and a fine bubble generation unit 20 for generating nano-scale ozone-containing fine bubbles by introducing the ozone-containing gas generated by the ozone-containing gas generation unit 10 into the liquid.
As shown in fig. 1, the ozone-containing gas generation unit 10 includes: a creeping discharge type ozone generator 11 having an ozone generating capability of 50 to 100 g/h; an oxygen cylinder 12 and a gas supply pipe 13 for supplying oxygen to the ozone generator 11; and a pressure control valve 14 and a flow control valve 15 provided in the gas supply pipe 13, wherein ozone is generated when the oxygen passes through the ozone generator 11, and the ozone-containing oxygen sent from the ozone generator 11 is supplied to a gas supply manifold 22 of the fine bubble generating unit 20, which will be described later.
The fine bubble generating unit 20 includes: a liquid storage tank 21 made of stainless steel for storing liquid, a gas discharge head 23, and a vibration applying means 24 for applying vibration to the gas discharge head 23, wherein ozone-containing oxygen gas is discharged from the gas discharge head 23 into the liquid while continuously applying vibration to the gas discharge head 23 immersed in the liquid stored in the liquid storage tank 21.
As shown in fig. 1, the gas discharge head 23 includes: a cylindrical head main body 23a having a closed front end and made of a gas-permeable porous body made of, for example, stainless steel; and a connector 23b attached to the base end of the head main body 23a, wherein ozone-containing oxygen gas is supplied through the gas supply manifold 22 by screwing the connector 23b into a connection port attached to the gas supply manifold 22.
The head main body 23a has a plurality of fine holes having a hole diameter of 2.5 μm or less for communicating the hollow portion thereof with the outside, and when ozone-containing oxygen gas is supplied to the hollow portion of the head main body 23a, the ozone-containing oxygen gas is discharged to the outside from the fine holes. The smaller the pore diameter of the micropores, the more easily generated ozone-containing microbubbles of nanometer order, but when the pore diameter of the micropores is too small, the resistance to release of ozone-containing oxygen becomes large, and therefore, the pore diameter of the micropores is preferably set in the range of 0.01 to 2.5 μm, more preferably 0.1 to 1.0. mu.m. The number of micropores of 2.5 μm or less is not particularly limited, and is preferably increased as the number is increased, because the amount of gas introduced into the liquid is increased.
As shown in fig. 1, the vibration applying unit 24 includes: a vibrator 24a attached to the bottom plate of the liquid storage tank 21; and a high-frequency switching circuit, not shown, as the vibrator 24a, a langevin type vibrator configured by 2 piezoelectric elements PE, PE sandwiched by 2 metal pieces m1, m 2.
The oscillator 24a is fixed to the outer surface of the bottom plate of the liquid storage tank 21 with the metal block m1 on the oscillation radiation side being located upward, and the oscillation of the oscillator 24a is applied to the head main body 23a of the gas discharge head 23 via the gas supply manifold 22 while resonating the bottom plate of the liquid storage tank 21.
The vibration of the vibrator 24a applied to the head main body 23a of the gas discharge head 23 is set to a frequency of 30000Hz or more and an amplitude of 1mm or less, and the supply amount of the ozone-containing oxygen gas to the gas discharge head 23 is adjusted so that (the discharge amount of the ozone-containing oxygen gas [ μm ] discharged from 1 minute hole of the head main body 23a3Per minute]) /(frequency of vibration of vibrator [ Hz [)]) Less than or equal to 300. (the amount of ozone-containing oxygen released from 1 minute hole of the head body 23a [ μm ]3Per minute]) /(frequency of vibration of vibrator [ Hz [)]) The smaller the size, the more easily nanobubbles are generated, and therefore, it is preferably 200 or less, and more preferably 100 or less.
Thus, the gas discharge head 23 is vibrated at a frequency of 30000Hz or more and an amplitude of 1mm or less so as to satisfy (the discharge amount of ozone-containing oxygen gas discharged from 1 minute hole of the head body 23 a. mu.m)3When the ozone-containing oxygen gas is discharged from the fine pores having a pore diameter of 2.5 μm or less in a mode of/min)/(vibration frequency Hz of the vibrator 24a) of 300 or less, the ozone-containing oxygen gas discharged from the fine pores of the gas discharge head 23 is divided into fine bubbles by vibration applied to the gas discharge head 23 and discharged into the liquid, and the fine bubbles discharged into the liquid undergo brownian motion while being gradually contracted, and are held in the liquid as nano-sized ozone-containing fine bubbles.
Hereinafter, examples 1 to 10 of the present invention and comparative examples 1 to 4 in which nanometer-order ozone-containing microbubble-containing water was generated by using the above-described ozone-containing microbubble-containing liquid generating apparatus 1 will be described with reference to tables 1 and 2, but the present invention is not limited to the following examples.
(example 1)
As shown in Table 1, in a room at 20 ℃, 4L of pure water was introduced into the liquid storage tank 21, oxygen gas was supplied to the ozone generator 11 to generate ozone at 50g/h, and ozone-containing oxygen gas was supplied to the fine bubble generating unit 20, whereby the gas discharge head 23 having about 6 hundred million to 5 million fine holes with an average pore diameter of 1 μm was 800000mm in diameter while the head main body 23a was kept from the gas discharge head 233Ozone-containing oxygen gas was discharged per minute, and vibration having a frequency of 40000Hz and an amplitude of 0.5mm was continuously applied to the gas discharge head 23 for 2 minutes. In addition, under this condition, the amount of the released ozone-containing oxygen (released from 1 minute hole of the head body 23 a) was μm3The/minute)/(vibration frequency Hz of the vibrator 24a) is 31. The ozone concentration of the ozone-containing oxygen gas in the pure water discharged into the liquid storage tank 21 was 1.041g/L, and the total ozone amount in the pure water introduced into the liquid storage tank 21 during operation was 1.67 g.
(example 2)
As shown in Table 1, except that the pore diameter was 2.5 μmOzone-containing oxygen gas was released into pure water in the same manner as in example 1, except for the head main body 23a having an average number of micropores of about 1 hundred million and 4 million. In addition, under this condition, the amount of the released ozone-containing oxygen (released from 1 minute hole of the head body 23 a) was μm3The frequency/minute)/(the vibration frequency Hz of the vibrator 24a) is 192. The ozone concentration of the ozone-containing oxygen gas in the pure water discharged into the liquid storage tank 21 was 1.041g/L, and the total ozone amount in the pure water introduced into the liquid storage tank 21 during operation was 1.67 g.
(example 3)
As shown in Table 1, ozone-containing oxygen gas was discharged into pure water in the same manner as in example 1 except that vibration having a frequency of 30000Hz and an amplitude of 0.5mm was applied to the gas discharge head 23. In addition, under this condition, the amount of the released ozone-containing oxygen (released from 1 minute hole of the head body 23 a) was μm3The/minute)/(vibration frequency Hz of the vibrator 24a) is 41. The ozone concentration of the ozone-containing oxygen gas in the pure water discharged into the liquid storage tank 21 was 1.041g/L, and the total ozone amount in the pure water introduced into the liquid storage tank 21 during operation was 1.67 g.
(example 4)
As shown in Table 1, ozone-containing oxygen gas was discharged into pure water in the same manner as in example 1 except that vibration having a frequency of 40000Hz and an amplitude of 1mm was applied to the gas discharge head 23. Under these conditions, the amount of oxygen released (from 1 minute hole of the head body 23 a) was μm3The/minute)/(vibration frequency Hz of the vibrator 24a) is 31. The ozone concentration of the ozone-containing oxygen gas in the pure water discharged into the liquid storage tank 21 was 1.041g/L, and the total ozone amount in the pure water introduced into the liquid storage tank 21 during operation was 1.67 g.
(example 5)
As shown in Table 1, except that the amount of the ozone-containing oxygen released from the gas discharge head 23 was 7800000mm3Except that, in the same manner as in example 1, ozone-containing oxygen was released into pure water. In addition, under this condition, the amount of the released ozone-containing oxygen (released from 1 minute hole of the head body 23 a) was μm3minute)/(Oscillator 24a vibration frequency Hz)300. Further, the ozone concentration of the ozone-containing oxygen gas in the pure water discharged into the liquid storage tank 21 was 0.107g/L, and the total ozone amount in the pure water introduced into the liquid storage tank 21 during operation was 1.67 g.
(example 6)
As shown in Table 1, in a room at 20 ℃, 4L of pure water was introduced into the liquid storage tank 21, and the gas discharge head 23 having about 6 hundred million and 5 million minute pores with an average pore diameter of 2 μm from the head main body 23a was made to have a diameter of 1000000mm3Ozone-containing oxygen gas was discharged per minute, and vibration having a frequency of 35000Hz and an amplitude of 0.005mm was continuously applied to the gas discharge head 23 for 2 minutes. In addition, under this condition, the amount of the released ozone-containing oxygen (released from 1 minute hole of the head body 23 a) was μm3The/minute)/(vibration frequency Hz of the vibrator 24a) is 44. Further, the ozone concentration of the ozone-containing oxygen gas in the pure water discharged into the liquid storage tank 21 was 0.833g/L, and the total ozone amount in the pure water introduced into the liquid storage tank 21 during the operation was 1.67 g.
(example 7)
Ozone-containing oxygen was released into pure water in the same manner as in example 6, except that the application time of the vibration was 4 minutes. In addition, under this condition, the amount of the released ozone-containing oxygen (released from 1 minute hole of the head body 23 a) was μm3The/minute)/(vibration frequency Hz of the vibrator 24a) is 44. Further, the ozone concentration of the ozone-containing oxygen gas in the pure water discharged into the liquid storage tank 21 was 0.833g/L, and the total ozone amount in the pure water introduced into the liquid storage tank 21 during operation was 3.33 g.
(example 8)
Ozone-containing oxygen was released into pure water in the same manner as in example 6, except that the application time of the vibration was 6 minutes. In addition, under this condition, the amount of the released ozone-containing oxygen (released from 1 minute hole of the head body 23 a) was μm3The/minute)/(vibration frequency Hz of the vibrator 24a) is 44. Further, the ozone concentration of the ozone-containing oxygen gas in the pure water discharged into the liquid storage tank 21 was 0.833g/L, and the total ozone amount in the pure water introduced into the liquid storage tank 21 during operation was 5.00 g.
Comparative example 1
Ozone-containing oxygen gas was released into pure water in the same manner as in example 1, except that the head main body 23a having an average number of pores of about 6 thousand to 5 million micropores and a pore diameter of 3 μm was used, as shown in table 1. In addition, under this condition, the amount of the released ozone-containing oxygen (released from 1 minute hole of the head body 23 a) was μm3The/minute)/(vibration frequency Hz of the vibrator 24a) is 307. The ozone concentration of the ozone-containing oxygen gas in the pure water discharged into the liquid storage tank 21 was 1.041g/L, and the total ozone amount in the pure water introduced into the liquid storage tank 21 during operation was 1.67 g.
Comparative example 2
As shown in Table 1, ozone-containing oxygen gas was discharged into pure water in the same manner as in example 1 except that vibration having a frequency of 25000Hz and an amplitude of 0.5mm was applied to the gas discharge head 23. In addition, under this condition, the amount of the released ozone-containing oxygen (released from 1 minute hole of the head body 23 a) was μm3The frequency of vibration per minute)/(the frequency of vibration Hz of the vibrator 24a) was 49. The ozone concentration of the ozone-containing oxygen gas in the pure water discharged into the liquid storage tank 21 was 1.041g/L, and the total ozone amount in the pure water introduced into the liquid storage tank 21 during operation was 1.67 g.
Comparative example 3
As shown in Table 1, ozone-containing oxygen gas was discharged into pure water in the same manner as in example 1 except that vibration having a frequency of 40000Hz and an amplitude of 2mm was applied to the gas discharge head 23. In addition, under this condition, the amount of the released ozone-containing oxygen (released from 1 minute hole of the head body 23 a) was μm3The/minute)/(vibration frequency Hz of the vibrator 24a) is 31. The ozone concentration of the ozone-containing oxygen gas in the pure water discharged into the liquid storage tank 21 was 1.041g/L, and the total ozone amount in the pure water introduced into the liquid storage tank 21 during operation was 1.67 g.
Comparative example 4
As shown in Table 1, except that the amount of ozone-containing oxygen released from the gas discharge head 23 was 10000000mm3Except that, in the same manner as in example 1, ozone-containing oxygen was released into pure water. In addition, under this condition, (from the head body 23a of 1 hole release containing ozoneOxygen release amount [ mu ] m3The frequency/minute)/(the vibration frequency Hz of the vibrator 24a) is 385. The ozone concentration of the ozone-containing oxygen gas in the pure water discharged into the liquid storage tank 21 was 0.083g/L, and the total ozone amount in the pure water introduced into the liquid storage tank 21 during operation was 1.67 g.
[ TABLE 1 ]
A: release amount of ozone-containing oxygen [ mm ] released from the gas discharge head as a whole3Minute/min]
B: average number of holes of gas discharge head
C: applying vibration frequency [ Hz ]
In examples 1 to 8 and comparative examples 1 to 4, the amount of ozone remaining was measured by an iodine titration method at the time when a predetermined time elapsed during the operation of the apparatus (the operation start time, the time when 30 seconds elapsed, the time when 60 seconds elapsed, the time when 90 seconds elapsed, the time when 120 seconds elapsed, the time when 240 seconds elapsed, and the time when 360 seconds elapsed), and the results thereof are shown in table 2.
[ TABLE 2 ]
In examples 1 to 8 and comparative examples 1 to 4, the peak particle diameter and the number of fine bubbles present in 1mL of the produced water in the liquid storage tank 21 obtained at the time of the respective operation stoppage were measured using a nanoparticle analysis system (Nanosite LM10V-HS (product name) manufactured by Malvern), and the results thereof are shown in table 3.
[ TABLE 3 ]
In examples 1 to 8 and comparative examples 1 to 4, the amount of ozone remaining was measured by an iodine titration method at the time when a predetermined time had elapsed from the operation stop time (the operation stop time, the time when 4 minutes had elapsed, the time when 12 minutes had elapsed, the time when 1 hour had elapsed, the time when 8 hours had elapsed, and the time when 1 day had elapsed), and the measurement results thereof are shown in table 4 together with the calculated reduction rate of the amount of ozone remaining at the time when 1 day elapsed.
[ TABLE 4 ]
Reduction rate of retained ozone: the reduction rate of the ozone retention amount at the time of 1 day elapse with respect to the time of operation stop
As is clear from Table 2, in examples 1 to 6 and comparative examples 1 to 4 in which the operating time was 120 seconds and the total amount of ozone introduced during operation was 1.67g, the amount of ozone remaining at the time of operation stop was about 80mg/L, except for example 5 and comparative example 4 in which the amount of ozone-containing oxygen released was extremely large. The reason why the amount of ozone remaining at the time of shutdown was as high as 150mg/L in examples 5 and comparative examples 4 was considered to be that ozone was easily dissolved because the amount of ozone-containing oxygen gas supplied was large, regardless of whether the amount of ozone introduced during operation was the same or not. On the other hand, in example 7 in which the operation was performed for 240 seconds and example 8 in which the operation was performed for 360 seconds, the amount of residual ozone at the time when 120 seconds passed was about 80mg/L, but the amount of total ozone introduced during the operation was large, and therefore the amount of residual ozone at the time of the operation stop exceeded 110 mg/L.
As is apparent from Table 3, in the apparatus 1 for producing a liquid containing ozone fine bubbles, the pore diameter of the fine pores of the gas emitting head 23 is 2.5 μm or less, the frequency of the vibration applied by the vibrator 24a is 30000Hz or more, the amplitude of the vibration applied by the vibrator 24a is 1mm or less, and (the emission amount of the gas emitted from 1 fine pore of the head body 23a is μm or less)3The operation stop time obtained in examples 1 to 8 in which/min)/(vibration frequency Hz of the vibrator 24a) was not more than 300 (examples 1 to 6: after 2 minutes, example 7: after 4 minutes, example 8: after 6 minutes), it was confirmed that the peak particle diameter was about 60 to 80nm in 1mL of the resultant waterAbout 6 million to 2 million micro-bubbles exist, and a large amount of micro-bubbles of tens of nanometers are generated. The fine bubbles are considered to be formed by the introduced ozone-containing oxygen gas, and it is presumed that 10 or more fine bubbles are obtained7～108Ozone water containing ozone-containing microbubbles, which contains ozone-containing microbubbles of several tens of nanometers per 1 mL.
On the other hand, in the apparatus 1 for producing the ozone-containing microbubble-containing liquid, comparative example 1 in which the pore diameter of the micropores of the gas emitting head 23 is 3 μm (> 2.5 μm), comparative example 2 in which the frequency of the vibration applied by the vibrator 24a is 25000Hz (< 30000Hz), comparative example 3 in which the amplitude of the vibration applied by the vibrator 24a is 2mm (> 1mm), and (the amount of release of the gas from 1 micropore of the head body 23a is μm)3In 1mL of the generated water at the operation stop time (after 2 minutes had elapsed) obtained in comparative example 4 in which/min)/(vibration frequency Hz of the vibrator 24a) was 385 (> 300), it was confirmed that about 300 to 100 ten thousand fine bubbles having a peak particle diameter of about 60 to 80nm were present and the number of generated fine bubbles was 106The number of particles/1 mL is small compared with those of examples 1-8.
As is clear from Table 4, it was confirmed that the content of ozone-containing microbubbles of several tens of nanometers was large at the time of shutdown (10)7～108In the order of 1 mL) of the ozone water containing ozone fine bubbles obtained in examples 1 to 8, 1.2 to 4.0mg/L of ozone was dissolved at the time of 1 day after the operation was stopped, but even when ozone of the same degree as in examples 1 to 8 was dissolved at the time of the operation stop, the content of ozone fine bubbles of several tens of nanometers was small (10 nm)6On the order of one/1 mL), ozone gas containing ozone fine bubbles obtained in comparative examples 1 to 4 had disappeared when 8 hours had elapsed after the operation was stopped.
In examples 1 to 8, it was confirmed that the reduction rate of the amount of retained ozone with respect to the operation stop time at the time of 1 day elapsed was the lowest in example 8 in which the number of generated ozone-containing microbubbles was the largest at the operation stop time, and the highest in example 5 in which the number of generated ozone-containing microbubbles was the smallest at the operation stop time. It is thus understood that by holding a large number of ozone-containing fine bubbles of nanometer order in water, ozone dissolved in water can be held for a long period of time.
In the above embodiments, the ozone-containing oxygen gas is introduced into pure water, but the present invention is not limited thereto, and ozone-containing gas may be introduced into various liquids such as tap water, sea water, hot spring water, contaminated water, and oil to generate ozone-containing fine bubbles.
In the above embodiment, the creeping discharge type ozone generator 11 is used, but the present invention is not limited to this, and various ozone generation types such as a silent discharge type, an ultraviolet irradiation type, and a corona discharge type may be used.
In the above-described embodiment, the langevin type vibrator is used as the vibrator 24a of the vibration applying unit 24, but the present invention is not limited thereto, and various types of vibrators can be used.
In the above embodiment, the ozone-containing oxygen gas is supplied to the fine-bubble generating unit 20 (gas emitting head 23) by the gas pressure of the oxygen cylinder that supplies the oxygen gas to the ozone generator 11, but the present invention is not limited to this, and an ozone-containing gas supplying unit such as a gas pump may be separately provided to supply the ozone-containing gas stored in a tank or the like to the fine-bubble generating unit 20 (gas emitting head 23).
Industrial applicability of the invention
The apparatus for generating a liquid containing ozone fine bubbles according to the present invention can be used for generating a liquid containing ozone fine bubbles used in the medical field or the like, in addition to sterilization of various treatment liquids, disinfection of foods, and the like.
Claims (1)
1. An apparatus for generating a liquid containing ozone-containing fine bubbles by introducing an ozone-containing gas into the liquid, comprising:
an ozone-containing gas generation unit that generates an ozone-containing gas; and
a fine bubble generation unit for introducing the ozone-containing gas generated by the ozone-containing gas generation unit into a liquid to generate ozone-containing fine bubbles on a nanometer scale,
the fine bubble generating unit includes:
a gas discharge head having minute holes immersed in a liquid;
an ozone-containing gas supply unit that supplies an ozone-containing gas to the gas discharge head; and
for the vibrator to which vibration is continuously applied to the gas discharge head that is discharging ozone-containing gas into liquid,
the pore diameter of the micro pores of the gas release head is less than 2.5[ mu ] m,
the frequency of the vibration applied to the gas discharge head by the vibrator is 30000[ Hz ] or more, the amplitude is 1[ mm ] or less,
the device for generating the liquid containing the ozone-containing fine bubbles adjusts the supply amount of the ozone-containing gas supplied to the gas discharge head so that (the amount of the ozone-containing oxygen gas discharged from 1 of the fine pores [ mu ] m)3Per minute]) /(frequency of vibration of the vibrator [ Hz ]])≤300。
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| JP2019208343A JP2021079325A (en) | 2019-11-19 | 2019-11-19 | Generation device of ozone-containing fine bubble-containing liquid |
| JP2019-208343 | 2019-11-19 |
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| CN112892255A true CN112892255A (en) | 2021-06-04 |
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| CN (1) | CN112892255A (en) |
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Application publication date: 20210604 |