JP2006116536A - Compact ultraviolet water sterilization and purification apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ultraviolet water sterilization and purification apparatus capable of treating any given amount of water and sterilizing various kinds of germs in natural water or seawater without using a high-output ultraviolet lamp, air, chlorine, or ozone gas, and also without need of removing a quartz tube of the ultraviolet lamp for easy cleaning. <P>SOLUTION: This novel ultraviolet water sterilization and purification apparatus for sterilizing various kinds of germs in natural water, seawater, or spa water by means of the cleaning effect of ultrasonic waves and the sterilizing effect of the ultraviolet rays, mainly comprises a sterilization tank housing containing honeycomb type sterilizing chambers, an ultraviolet irradiation section, and an ultrasonic wave cleaning section. This is easily controlled on a touch-panel console via a sequence control for controlling safety, the lamp lifetime, the amount of ultraviolet irradiation, the amount of the treated water, the power source, and the starting time. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention is a small ultraviolet sterilizing water purifier that sterilizes germs and bacteria contained in natural water and seawater by irradiating ultraviolet rays.

When used for thawing processing of frozen seafood according to the Food Sanitation Law, drinking water, sterilized seawater, or artificial seawater using drinking water is used.
Japanese Patent Laid-Open No. 2003-275755 (hereinafter referred to as Patent Document 1) states that “there is no need for extra piping equipment, which makes it extremely simple and the sterilizer is a plug-in type in the sterilization tank. An object of the present invention is to provide a filtration tank integrated sterilizer that can be easily replaced, cleaned of a quartz tube, etc., and can be used continuously without stopping the circulation operation (paragraph 0003 of Patent Document 1). ) "," In the sterilization tank (2), seawater stirred and sterilized with the air injected by the air pump (31) overflows as it rises, flows down into the water storage tank (3), and is sterilized inside. In a state where the seawater is agitated with air and the water temperature is constant, the metering valve (19) and the water pipe (20) are passed by driving the water pump (11) located below, and the water pipe (20) Several more water supply valves (2 ) (21)... Is automatically operated by opening and closing and supplied to various aquariums (22), (22), etc. as processed water for seafood (paragraph 0008 of Patent Document 1). And “FIG. 2”.

Japanese Patent Laid-Open No. 2003-245661 (hereinafter referred to as “Patent Document 2”) is intended to provide a cold seawater sterilizer that can be used continuously without stopping the circulation operation. Paragraph 0003), “In this sterilization chamber, a sterilization unit having an ultraviolet lamp and a quartz tube is provided vertically. In addition, air from an air pump is passed through the air tube inside the space between the ultraviolet lamp and the quartz tube. The water storage tank is provided with an air disperser that communicates with an air pump, and further passes through a circulation pump and a cooling unit through a circulation water pipe from a circulation delivery section provided in the water storage tank. Then, circulation is repeated in the sterilization chamber (paragraph 0004) ".

Japanese Patent Application Laid-Open No. 2004-160437 (hereinafter referred to as Patent Document 3) states that “Ozone is injected at the same time as steam injection or before and after steam injection. The shock wave reduces the size of the ozone and activates it, accelerating its dissolution in the water to be treated and converting it into hydroxy radicals with higher oxidizing power, sterilizing and purifying harmful substances and microorganisms by ozone. (Paragraph 0013) ”,“ Steam-treated water is irradiated with ultraviolet rays. This makes it possible to kill dead and inactivated microorganisms with ultraviolet rays. As a result, it is possible to efficiently perform sterilization and purification with ultraviolet rays (paragraph number 0018) and “FIG. 4”.

Japanese Patent Laid-Open No. 2003-285053 (hereinafter referred to as Patent Document 4) states that “the first ultraviolet sterilizer 6 and the second ultraviolet sterilizer 7 have a processing capacity of 24 m ³ / hour, for example, Connected to the cold seawater supply pipe 29 and supplies treated seawater or cold seawater sterilized with ultraviolet rays to the treated seawater drainage section 8. As this ultraviolet sterilizer, for example, a high output ultraviolet water sterilizer manufactured by Funatec Co., Ltd. is used. Is possible. "

Japanese Patent Application Laid-Open No. 5-212378 (hereinafter referred to as Patent Document 5) states that “the apparatus has a circular and square cross section and houses a large number of ultraviolet lamps inside, and liquid inlets and outlets are provided at both ends of the apparatus. And a description of "UV irradiation device (Claims)", wherein a plurality of mixed flow plates are provided at an appropriate pitch so that liquid flows in a direction perpendicular to the UV lamp. is there.

Sterilization equipment catalog of Funatekku Co., Ltd. (hereinafter, non-referred to as Patent Document 1), the "sterilization, such as sea water, bath, pond water in ^{1m 3} / ^h~100m 3 / h simplified device as a SW · MW series", "SA The mold sterilizer is described as “a device incorporating a special high-power lamp of 200 watts”.

JP 2003-275755 A JP 2003-245661 A JP 2004-162437 A JP 2003-285053 A JP-A-5-212378 Funatech Co., Ltd. Sterilization Equipment Catalog 2004

However,
Patent Document 1 has stirring sterilization with air, but there are problems such as a decrease in ultraviolet transmittance due to light scattering effect due to bubbles and a decrease in sterilization efficacy. In addition, although there is a cleaning of the quartz tube, there is a problem that it is removed and the lamp and the sterilization tank are manually cleaned.
In Patent Document 2, an air disperser communicated with an air pump is provided, and further, a circulation system provided in the water storage tank, which is agitated with air. There are problems such as a decrease in rate and a decrease in bactericidal efficacy.
In Patent Document 3, the sterilization effect of ozone gas is improved by a shock wave associated with the collapse of a bubble group of steam, and ultraviolet irradiation is an auxiliary means, that steam or ozone equipment is required, There are problems such as the fact that treated water is modified by ozone.
Patent Document 4 states that “using the first UV sterilizer 6 and the second UV sterilizer 7”, but there is no description of UV irradiation, and mainly uses cooling water to make a tilted water tank. There are problems with sterilization such as doubts about its effectiveness.
According to Patent Document 5, the efficiency of the ultraviolet lamp is significantly different. For example, when the processing amount is compared with that of the lamp, it is 5m ³ /H:12.6 m ³ / H at 1330w: 135w.
Next, the sterilization tank is dirty and foreign matter is likely to adhere to the mixed flow plate so that it flows in a right angle direction, but no countermeasures are described when the surface of the ultraviolet lamp becomes dirty or foreign matter adheres. There are problems.

Non-Patent Document 1 describes that single tubes or single tubes are parallel, and the processing ability of E. coli is inferior (for example, 0.023 ton / H * W, the present invention is 0.093023 ton / H * W). There are problems such as cleaning the sterilization tank with a wiper.
The present invention can be easily cleaned without inserting or removing a quartz tube of an ultraviolet lamp, without using air, chlorine, ozone gas, without using high-output ultraviolet rays, and bacteria / miscellaneous bacteria contained in natural water and seawater. An object of the present invention is to provide an ultraviolet sterilizing water purifier for treating an arbitrary amount of water.

As a result of intensive research on the structure of the sterilization tank, the method of irradiation, the flow of seawater, the irradiation time, etc., the inventor of the present application constituted a sterilization tank housing and an ultrasonic cleaning section having a honeycomb structure continuously connected to the ultraviolet irradiation section, The present invention has been completed by sterilizing germs and bacteria contained in natural water and seawater by ultraviolet germicidal action and ultrasonic cleaning action, thereby solving the above-mentioned problems. That is,
The present invention mainly comprises a sterilization tank housing in which the sterilization tank has a honeycomb structure and a continuous communication structure, an ultraviolet irradiation unit, and an ultrasonic cleaning unit. , A new UV sterilization water purifier that sterilizes bacteria and bacteria contained in seawater and hot spring water.

Treated water in the present invention is natural water, seawater, hot spring water, natural water is groundwater, spring water, river water, rain water, hard water, soft water, seawater is bay seawater, high sea water, Mineral water and circulating hot spring water are used as water.
Treated water is used as irrigation water, specifically drinking water, household water, public water, industrial water, tap water, cooking water, pool water, boiler water, cooling water, seafood / fish shell treatment water, bathhouse hot spring Used for water.
The sterilization tank housing referred to in the present invention is a structure having a honeycomb structure in which a sterilization tank made of mirror surface stainless steel is integrated, and has an inflow portion (inlet / inflow pipe) and an outflow portion (outlet / outlet). And an ultrasonic cleaning unit can be attached to the lower part. It may be a housing that protects the honeycomb structure.
The sterilization tank according to the present invention has a shape of a stainless steel square column tube, hexagonal column tube, cylindrical tube, or elliptical column tube that has an internal mirror finish, and opens a portion of the upper and lower portions facing each other, and a processing channel is formed. It is alternately connected so as to form a honeycomb structure. A sterilization tank is a structure which can insert inflow and outflow of treated water by inserting an ultraviolet lamp. The structure is such that the treated water is continuously communicated and sterilized.

The ultraviolet irradiation section referred to in the present invention is mainly composed of an upper lid, an ultraviolet lamp socket, and an ultraviolet lamp, and is equipped with a power supply wiring and a control wiring, and continuously irradiates the treated water with ultraviolet light. It has the effect of sterilizing and sterilizing bacteria and bacteria.
The ultrasonic cleaning section used in the present invention is an apparatus including an ultrasonic transmitter attached to a lower lid serving as a bottom of a sterilization tank auging and a magnetostrictive vibrator. Specifically, the vibration wave output from the magnetostrictive vibrator has a function of cleaning the surface of the ultraviolet lamp and the inner surface of the sterilization tank through the treated water.
The touch panel control panel of the present invention is a uni-person design on the touch panel for start-up control and power supply, amount of treated water, irradiation amount, lamp life control, safety management control, and the like.

The ultraviolet sterilization water purifier of the present invention mainly comprises a sterilization tank housing having a honeycomb structure, an ultraviolet irradiation unit, and an ultrasonic cleaning unit. A sterilization tank housing having a honeycomb structure having a structure in which a sterilization tank made of mirror surface stainless steel is continuously communicated is also included in the ultraviolet sterilization water purifier of the present invention.
The ultraviolet irradiation unit may include an ultraviolet lamp socket and an ultraviolet lamp, and the ultraviolet lamp may be a low-pressure mercury lamp with a low output.
In the ultraviolet sterilization water purifier of the present invention, the ultrasonic cleaning section is composed of a magnetostrictive vibrator distributed from an ultrasonic transmitter, and the magnetostrictive vibrator is attached to the bottom of the sterilization tank so that the inside of the sterilization tank and / or the ultraviolet ray is obtained. It is also characterized by removing the deposits on the lamp.
The ultraviolet sterilizing water purifier of the present invention includes a touch panel type control panel by sequence control for starting control and power supply, amount of treated water, irradiation amount, lamp life, and safety management control.

When the ultraviolet sterilization water purifier of the present invention is used, seawater containing E. coli and the like can be sterilized efficiently, and a large amount of seawater washed seawater can be obtained. It is also suitable for thawing frozen seafood. It is also suitable as sterilized seawater for use in marine products processing.
Moreover, by increasing / decreasing the number of sterilization tanks, it is possible to obtain an arbitrary amount of processing, and it is small and easy to move, so that it can be processed anywhere on the ship or on the vehicle.

The ultraviolet sterilization water purifier of the present invention is characterized in that it can be used for washing fish in a seawater tank, canteen, restaurant, etc. for live fish depending on the application. It can also be used to sterilize well water.

  The ultraviolet sterilization water purifier of the present invention has a small size of (70 to 90) mm × (70 to 90) mm × (300 to 400) mm, and sterilizes and efficiently sterilizes seawater of 60 L / min or more continuously. can do. For example, when the power consumption of the ultraviolet lamp is 135 W, the E. coli processing capability is 0.093023 ton / H * W, which is very superior to the conventional E. coli processing capability of 0.023 ton / H * W.

By making the inside of the sterilization tank a mirror finish, it is possible to increase the light reflection efficiency and increase the sterilization effect.
Because of this miniaturization, it is possible to move to the place where it is necessary on board, on the vehicle, and so on. An ultraviolet lamp having a power consumption of 150 W or less can be used, and power consumption can be reduced. Since multiple UV lamps are used, it is possible to respond quickly to problems such as lamp burnout. Seawater can be sterilized and sterilized continuously for a long time. It is a small UV sterilization water purifier that can be supplied stably.
By installing an ultrasonic cleaner, the surface of the ultraviolet lamp as well as the sterilization tank is cleaned, so that the state of high sterilization effect can always be maintained.
This device can sterilize not only seawater but also well water and hot spring water.
The sterilization required by the market can be done easily.
Uses multiple UV lamps, but can be cleaned without inserting or removing the quartz tube.
A touch panel control panel is included for easy operation.

The ultraviolet sterilization water purification apparatus 100 which is embodiment of this invention and the processing method of the seawater using the said ultraviolet sterilization water purification apparatus 100 are demonstrated, referring FIG.
The whole structure of the ultraviolet sterilization water purifier 100 which concerns on this Embodiment is typically shown to (a), (b) of FIG.
The ultraviolet sterilization water purifier 100 according to the present embodiment forms a honeycomb structure in the sterilization tank housing 106 through the processing channels 110 of the plurality of sterilization tank partition plates 109, and connects the plurality of sterilization tanks 105 to the ultraviolet light connected to each other. A lamp 104 is included.
As the ultraviolet lamp, a high-pressure mercury lamp, a low-pressure mercury lamp, a halide lamp, or the like can be used. A lamp in which a low-pressure mercury lamp is inserted into an ultraviolet-transmissive glass container may be used, but an underwater type is preferable. When sterilizing general bacteria, it is desirable to use the ultraviolet wavelength (253.7 nm), and seawater can be easily sterilized and sterilized.

The processing flow path 110 is provided alternately above or below the sterilization tank partition plate 109. The opening of the processing flow path 110 depends on the size and output of the UV lamp 104 used, but when the output is low, the height is preferably 20 to 30 mm at the top and 15 to 20 mm at the bottom. The size of the sterilization tank 105 depends on the amount of treated water, the number of sterilization tanks, and the used ultraviolet lamp 104, but the distance between the outer wall of the used ultraviolet lamp 104 and the inner wall of the sterilization tank 105 is preferably 10 mm to 50 mm. (40-90) mm × (40-90) mm × (300-400) mm is appropriate in order to make 100 movable and downsized.
In addition, a plurality of ultraviolet lamp sockets 103, a plurality of magnetostrictive vibrators 115, and an ultrasonic transmitter 114 are attached to the sterilization tank housing 106, and a mount 113 is attached.
When foreign matter adheres, the surface of the ultraviolet lamp as well as the sterilization tank is washed, so that the state of high sterilization efficiency can always be maintained.
Specifically, from the inlet 101 side where the filtered seawater flows into the sterilization tank housing 106, the outlet pipe 108 and the outlet 102 are arranged in this order through the inflow pipe 107, the plurality of sterilization tanks 105, and the plurality of treatment channels 110. Arranged in

Describe the process by which seawater is treated. The filtered seawater flows from the inflow port 101 through the inflow pipe 107 into the sterilization tank 105 and is irradiated to the ultraviolet lamp 104. Next, it flows into the sterilization tank 105 through the processing channel 110. Similar (these) processes can be repeated to sterilize the required amount of seawater.
Although it depends on the type of viable cells in the treated water, the ultraviolet sterilizing water purification apparatus 100 can process 60 L / min or more.
There are already sterilization with chlorine, sterilization with ozone, electrolysis and the like, but in the case of chlorine, it reacts with seawater and has practical problems.

A flowchart and a touch panel type control panel will be described with reference to FIG. 10 for a touch panel type control panel based on start-up control and power supply, treated water amount, irradiation amount, lamp life control, and sequence control for safety management control.
(Control at start-up)
After turning on the lamp power supply 200, the sequencer 401 can set an arbitrary time to control the operation.
(Management of UV lamp irradiation time)
If the lifetime of the ultraviolet lamp 104 is not managed, the irradiation time is managed by the sequencer 401 in order to cause a decrease in output due to exceeding a certain time.
(Control of ultrasonic cleaner)
Depending on the status of the treated water, for example, the degree of contamination, output control and time management from the magnetostrictive transmitter 115 can be controlled by the sequencer 401. By regularly cleaning the ultraviolet lamp 104 and the sterilization tank 105 with the sequencer 401, stable treated water can be provided.
(Control of treated water volume)
Water to be treated is introduced into the sterilization tank 105 from the inlet 101 through the flow meter 201. At this time, the amount of treated water can be controlled by adjusting the drive valve 202 with the sequencer 401 using the touch panel 400.
(Safety management)
By managing the lighting time of the ultraviolet lamp 104, the intensity deterioration of the ultraviolet lamp 104 can be monitored. By monitoring the pressure in the sterilization tank 105 with the pressure sensor 203, the sterilization container 300 can be safely managed.

The ultraviolet sterilizer unit will be described in detail with reference to FIG.
First, since it is sterilization by ultraviolet light irradiation, the effectiveness of the ultraviolet lamp in the ultraviolet sterilizer unit 300 was examined. One UV lamp S GLD15MQ was used.
The seawater to be treated is in Yonezu Port, Izumi City in November, and is inhabited by cells of general bacteria 560 CFU / ml, Escherichia coli 3 CFU / ml, and Vibrio parahaemolyticus 4.0 CFU / ml. This seawater is abbreviated as seawater A. The size of the sterilization container 300 was designed as a sterilization tank 105 of 76 mm × 76 mm × 335 mm. As a start-up operation, the sterilization container 300 was previously cleaned with hypozinc and made sterile. The filtered seawater A flowed into the sterilization tank 105 from the inflow port 101 through the inflow pipe 107.

By turning on the ultraviolet lamp 104, the seawater A in the sterilization tank 105 is irradiated with the wavelength of ultraviolet rays (253.7 nm). When the volume of the ultraviolet lamp 104 is subtracted from the volume of the sterilization tank 105 and calculated, the amount of seawater treated per sterilization tank 105 is 1.75L.
The seawater A in the sterilization tank 105 is killed by being irradiated with the light from the ultraviolet lamp 104. The seawater A in the sterilization tank 105 was irradiated with the ultraviolet lamp 104, and the killed state of the bacteria contained in the seawater A was measured every hour.

Next, 1.75 L of filtered seawater A is introduced into the sterilization tank 105 from the inlet 101 through the inlet pipe 107 and irradiated for 5 seconds. At this time, a sample is taken from the outlet 102. Next, the seawater A is replaced from the inflow port 101, and similarly, the sample is collected from the outflow port 102 by irradiation for 10 seconds. In the same manner, the seawater A, which was irradiated for 15 seconds and the sample was treated with the outlet 102, was collected.
In this case, the seawater A was measured after being irradiated on the ultraviolet lamp 104 in a stationary state in the sterilization tank 105.
Table 1 shows the results when the irradiation time is 10 seconds, 15 seconds, and 20 seconds.

１０秒の照射では大腸菌は死滅し、一般菌は１と死滅しないことが判明した。
１５秒、２０秒照射は一般菌・大腸菌ともに完全に死滅して０である。

It was proved that E. coli was killed by irradiation for 10 seconds, and that 1 was not killed by general bacteria.
The irradiation for 15 seconds and 20 seconds is 0 after killing both general bacteria and Escherichia coli.

A test was conducted to confirm how effective the ultraviolet lamp is in the sterilization of seawater.
Used UV lamp (253.7 nm) Company S GLD15MQ The size of the container of the sterilization tank was determined as shown in FIG.

FIG. 7 shows the relationship between the intensity and distance of the ultraviolet lamp.
The UV lamp was fixed, the UV intensity meter was fixed to the vertical stand, and the UV intensity was measured according to distance.
The measurement environment was measured at intervals of 5 mm from 0 to 55 mm with an ultraviolet lamp fixed in the atmosphere and a sensor of the ultraviolet intensity meter set vertically.
The sensor of the ultraviolet intensity meter was measured at intervals of 5 mm from 0 to 55 mm.
We decided to find the time required to sterilize the seawater A.
The relationship between the irradiation intensity of light of the ultraviolet lamp 104 and the distance is graphed.
The sterilization tank design drawing 3 was created based on FIGS. 7 and 8.

FIG. 8 is a graph showing the relationship between ultraviolet intensity, irradiation time, and distance.
Numerical values were obtained from FIG. 2 and the design drawing 3 based on the distances P, Q, and R with the ultraviolet lamp 104. A distance of P = R27 mm Q42.3 mm was obtained and used as a reference. In this case, the irradiation amount necessary for killing general bacteria from the data was based on 36000 μw · sec / cm ² .
Since the irradiation amount required to sterilize Bacillus subtilis is 33300 μw · sec / cm ² , this value was used as a reference for the design of the sterilization tank. At this time, the relationship between the irradiation time of the ultraviolet lamp 104 and the irradiated distance (P · Q · R) from the ultraviolet lamp 104 becomes a problem. P = R of the seawater sterilization tank 105 in FIG. 2 is a distance of 27 mm · Q = 42.3 mm from the lamp. The P · R portion of the sterilization tank 105 is sufficient if it is 7 seconds / cm ² , but the Q portion must be 13 seconds / cm ² .
Therefore, the time required for sterilizing seawater A was set to 13 seconds / cm ² . For this reason, the seawater A requires an irradiation time of 13 seconds / cm ² or more.

Next, the graph of FIG. 8 will be described. The relationship between irradiation intensity of the ultraviolet lamp 104, time, and distance when the reference value, which is the lethality of bacteria, is 36000 μw · sec / cm ² is illustrated.
In particular, irradiation intensity, time, and distance are important for sterilizing microorganisms and bacteria with ultraviolet rays. The UV intensity (sterilization dose) varies in the amount of irradiation energy to be inactivated depending on the type of bacteria.
In this case, if it is 36000 μw · sec / cm ² , most of the bacteria contained in the target seawater A can be killed. Therefore, this value of 36000 μw · sec / cm ² was used as a reference.
[Comparative Example 1]

As a result of the experiment performed in Example 1, when the seawater A filtered in FIG. 2 is put into the sterilization tank 105 from the inlet 101 through the inflow pipe 107 and irradiated with the ultraviolet lamp 104 for 5 seconds, general bacteria may not be killed. found.
As shown in FIG. 8, it is understood that the time at this time must be 13 seconds / cm ² or more in order to kill the seawater A in the sterilization tank 105. From this, the amount of seawater that can be killed by one is 6.7 L / min. Therefore, if the target seawater A treatment amount is 60 L / min, nine UV lamps having the same output are required. At this time, the total length of the sterilization tank is 335 mm × 9 = 3015 mm, which is very long and cannot be put into practical use. Therefore, a sterilization method for seawater A must be considered.
The capacity of one ultraviolet lamp is greatly increased or the use of a plurality of ultraviolet lamps is required.
[Comparative Example 2]

FIG. 5 will be described. The seawater to be treated is in Komenozu Port, Izumi City in June, and is inhabited by bacteria of 320 CFU / ml of general bacteria, 7 CFU / ml of Escherichia coli, and 4.0 CFU / ml of Vibrio parahaemolyticus. This seawater is abbreviated as seawater B.
In this treatment method, six independent sterilization tanks 105 were connected by a connection pipe 112. The filtered seawater B flows from the inlet 101 through the inflow pipe 107 into the sterilization tank 105, and the filtered seawater B having a six-connected structure flows into the sterilization tank 105 through the inflow pipe 101. Light was irradiated from the sterilization lamp 104 in the sterilization tank 105 for 5.2 seconds.
Next, it passed through the connecting pipe 112 (0.72 seconds) and flowed into the next sterilization tank 105. Similarly, light was irradiated from the sterilization lamp 4 in the sterilization tank 105 for 5.2 seconds. This treatment was repeated, and seawater B treated from the outlet 102 through the outflow pipe 108 was collected.
Table 2 shows the results when the flow rate of the treated seawater B is 20 L / min and 40 L / min.

Vibrio parahaemolyticus is sterilized, but E. coli is slightly sterilized, but general bacteria are rather increasing.
It turns out that there is almost no sterilization effect even if it connects like FIG. 5 and the full length of a sterilization tank shall be 2000 mm.
The treated water is irradiated in the sterilization tank 104 for 5.2 seconds and is not irradiated in the connection pipe 112 for 0.72 seconds. The repetition of irradiating and not irradiating means that the ultraviolet lamp 104 is intermittently irradiated and is not continuous irradiation.
Similarly, in the case of 40 L / min, the irradiation time in the sterilization tank is 2.6 seconds, and in the connection pipe 112, it is 0.36 seconds.
Therefore, the connection method shown in FIG. 5 is not suitable for the intended sterilization / sterilization.

The ultraviolet sterilizer by the connection method of the sterilization tank 105 of this invention is shown in FIG. Four sterilization tanks 105 are connected. Ultraviolet irradiation is the same as in Example 1.
The seawater to be treated is in Komenozu Port, Izumi City in November, and is inhabited by bacteria of 320 CFU / ml of general bacteria, 7.0 CFU / ml of Escherichia coli, and 4.0 CFU / ml of Vibrio parahaemolyticus. This seawater is abbreviated as seawater C.
Moreover, as described above, the irradiation intensity, time, and distance are problems in sterilizing the bacteria in the seawater C because it is a method in which the light is irradiated directly into the seawater C.
Referring to FIG. 3, in this case, four ultraviolet lamps 104 are used by connecting four sterilization tanks 105.

The seawater C that has been filtered first enters the sterilization tank 105 from the inlet 101 of the inflow pipe 107, is irradiated with the ultraviolet lamp 104, and flows to the next sterilization tank 105 through the lower part of the flow path 110.
Next, this is repeated such that the ultraviolet lamp 104 is irradiated and flows from the upper part of the flow path 110 to the sterilization tank 105.
Finally, the seawater C sterilized through irradiation with the ultraviolet lamp 104 passes through the outflow pipe 108 and exits to the outlet 102. At this time, the partition plate 109 is partitioned between the sterilization tank 105 and the next sterilization tank 105. .
In the case of 15 L / min, the seawater C flows through the sterilization tank 105 to the next sterilization tank 105 over 7 seconds, and is repeatedly irradiated for 28 seconds in the sterilization tank 105 of 7 seconds × 4 locations, and flows out through the outflow pipe 108. Come out to 102.
When it is 20 L / min, it is irradiated for 21 seconds. At 30 L / min, irradiation is performed for 14 seconds. The data is shown in Table 3.

上記のデータにより紫外線ランプ１０４の紫外線は光照射による殺菌であることから光照射を如何に連続して照射するか、菌の死滅するに充分な時間（３６０００μｗ・ｓｅｃ／ｃｍ）で１３秒以上の照射を確保しなければならない。この値を確保しているので試験結果は良である。

Based on the above data, the ultraviolet rays of the ultraviolet lamp 104 are sterilized by light irradiation, so how long the light irradiation is continuously applied, or more than 13 seconds in a time sufficient to kill the bacteria (36000 μw · sec / cm). Irradiation must be ensured. Since this value is secured, the test results are good.

It processed like Example 2 except having made the flow volume of seawater C into 15 L / min. The irradiation time from the inlet 101 to the outlet 102 is 28 seconds.
The same processing as in Example 2 was performed except that the flow rate of seawater C was 20 L / min. The irradiation time from the inlet 101 to the spout 102 is 21 seconds.
The same processing as in Example 2 was performed except that the flow rate of seawater C was 30 L / min. The irradiation time from the inlet 101 to the outlet 102 is 14 seconds.
The results are shown in Table 3.
As can be seen from the above results, the seawater C is sterilized and both are satisfactory.

Referring to FIG. 4, this device of this time uses eight ultraviolet lamps 104. The sterilization tank 105 is also connected at eight locations. The seawater to be treated is in Komenozu Port, Izumi City in November, and is inhabited by bacteria of 320 CFU / ml of general bacteria, 7.0 CFU / ml of Escherichia coli, and 4.0 CFU / ml of Vibrio parahaemolyticus. This seawater is abbreviated as seawater D.
From the passed seawater D inlet 101, it passes through the inflow pipe 7 and enters the sterilization tank 105, and enters the next sterilization tank 105 through the flow path 110. It comes out from the outflow port 102 through the seawater D outflow pipe 108 irradiated in the sterilization tank.

The seawater D was processed at a flow rate of 30 L / min. The irradiation time from the inlet 101 to the spout 102 is 28 seconds. The results are shown in Table 4.
Therefore, all bacteria including general bacteria are dead. The bacteria contained in the seawater D are dead.

Similarly, the treatment was performed in the same manner as in Example 4 except that the flow rate was 40 L / min. The irradiation time of the sterilization tank 105 is 21 seconds. The results are shown in Table 4.
In all cases, all bacteria including general bacteria are dead, and the result is good.

Similarly, the flow rate is 50 L / min and the irradiation time of the sterilization tank 105 is 16.8 seconds. The results are shown in Table 4.
In all cases, all bacteria, including general bacteria, have been killed. This result shows the results of previous tests.

Based on the ultraviolet sterilization water purification apparatus 100 which is embodiment of this invention, and the processing method of the seawater using the said ultraviolet sterilization water purification apparatus 100, it demonstrates, referring FIG.
The whole structure of the ultraviolet sterilization water purifier 100 which concerns on this Embodiment is typically shown by Fig.1 (a) (b). The ultraviolet sterilization water purifier 100 according to the present embodiment includes a plurality of sterilization tanks 105 or ultraviolet lamps 104 connected to each other through the treatment flow paths 110 of the plurality of sterilization tank partition plates 109 in the sterilization tank housing 106.
The sterilization tank 105 is also connected at nine places, and the sterilization tank housing 106 is a square.
The ultraviolet sterilization water purifier uses nine ultraviolet lamps 104. As the ultraviolet lamp 104 to be used, a lamp in which a low-pressure mercury lamp is inserted into an ultraviolet transmissive glass container may be used, but an underwater lamp is preferable.

The processing flow path 110 is provided alternately above or below the sterilization tank partition plate 109. The opening of the processing channel 110 has a height of 20 to 30 mm at the top and 15 to 20 mm at the bottom. Although the size of the sterilization tank 105 depends on the ultraviolet lamp 104 used, in order to make the ultraviolet sterilization water purifier movable and miniaturized, (70 to 90) mm × (70 to 90) mm × (300 to 400). ) Mm.
In addition, a plurality of ultraviolet lamp sockets 103, a plurality of magnetostrictive vibrators 115, and an ultrasonic transmitter 114 are attached to the sterilization tank housing 106, and a mount 113 is attached.
Specifically, from the inlet 101 side where the filtered seawater flows into the sterilization tank housing 106, the outlet pipe 108 and the outlet 102 are arranged in this order through the inflow pipe 107, the plurality of sterilization tanks 105, and the plurality of treatment channels 110. Arranged in

The seawater to be treated is in Yonezu Port, Izumi City in June, and inhabited by microbial cells of general bacteria 580 CFU / ml, E. coli 2 CFU / ml, and Vibrio parahaemolyticus 0.0 CFU / ml. This seawater is abbreviated as seawater D.
In the case of 60 L / min: The filtered seawater D is irradiated with light from the ultraviolet lamp 104 for 1.75 seconds in the sterilization tank 105 passing through the inflow pipe 7 and entering the sterilization tank 105.
The seawater D flows through the flow path 110 and enters the next sterilization tank 105. The seawater 105 irradiated for the same time, flows through nine tanks of the sterilization tank 105, and sterilized from the outlet 102 through the outflow pipe 108.
It is irradiated for a total of 15.75 seconds and comes out. As described above, general bacteria are killed by irradiation with ultraviolet rays for 13 seconds or longer.
In the case of FIG. 1 (this), the continuous irradiation of ultraviolet light to the seawater D is devised, so that germs contained in the seawater can be surely killed.
The filtered seawater D enters the sterilization tank 105 from the inlet 101 through the inflow pipe 107, where the seawater D is irradiated with light from the ultraviolet lamp 104 for 3.5 seconds, and then passes through the flow path 110. The sterilization tank 105 is entered. Similarly, it enters the next sterilization tank 105 through the flow path 110, is irradiated for a total of 31.6 seconds, and exits from the outlet 102 through the outflow pipe 108. The results are as follows.

The same treatment as in Example 7 was performed except that 60 L / min. The filtered seawater D is irradiated with light from the ultraviolet lamp 104 for 1.75 seconds in the sterilization tank 105 entering the sterilization tank 105 through the inflow pipe 7.
The seawater D flows through the flow path 110 and enters the next sterilization tank 105. The seawater 105 irradiated for the same time, flows through nine tanks of the sterilization tank 105, and sterilized from the outlet 102 through the outflow pipe 108. It is irradiated for a total of 15.75 seconds and comes out. The results are shown in Table 4. As described above, general bacteria were killed by irradiation with ultraviolet rays for 13 seconds or longer.

  The treatment was performed in the same manner as in Example 7 except for 50 L / min. The results are shown in Table 4. Since the same result came out after irradiation for a total of 18.9 seconds, the bacteria including general bacteria were killed.

The same treatment as in Example 7 was performed except that 40 L / min was used. The results are shown in Table 4. Since the same result came out after irradiation for a total of 23.6 seconds, the bacteria including general bacteria were killed.

The treatment was performed in the same manner as in Example 7 except for 30 L / min. The results are shown in Table 4. Since it came out after irradiation for a total of 31.5 seconds, fungi including general bacteria were killed.

In addition, a plurality of magnetostrictive vibrators 115 and ultrasonic transmitters 114 were attached to the sterilization tank housing 106.
Specifically, from the inlet 101 side where the filtered seawater flows into the sterilization tank housing 106, the outlet pipe 108 and the outlet 102 are arranged in this order through the inflow pipe 107, the plurality of sterilization tanks 105, and the plurality of treatment channels 110. Arranged in

An ultrasonic cleaner is applied to remove foreign substances and the like adhering to the ultraviolet lamp 4 during operation of the small ultraviolet sterilizing water purifier.
In general, there is a method of cleaning the surface of the ultraviolet lamp 4 manually or with a brush or wiper. The ultrasonic cleaning in FIG. 6 will be described.
The filtered seawater D enters the sterilization tank 105 from the inflow port 101 through the inflow pipe 7. At this time, the magnetostrictive vibrator 115 of the ultrasonic transmitter 114 is attached under the sterilization tank 105 to be sterilized by irradiating the ultraviolet lamp 104. Therefore, the operation of the ultrasonic transmitter 114 is not always performed. The timer was set according to the state (dirt, turbidity) and was operated periodically at an arbitrary time.
The ultrasonic wave output from the magnetostrictive vibrator 115 was transmitted through the seawater D from the bottom side of the sterilization tank 105 to clean the surface of the ultraviolet lamp. If foreign matter or the like adheres to the ultraviolet lamp 104 depending on the state of the seawater D, the intensity of the light emitted from the ultraviolet lamp 104 changes, and the problem that the sterilization effect deteriorates has been solved.
At the same time, the inner surface of the sterilization tank 105 was also cleaned. Seawater could be sterilized continuously for a long time. It is a UV sterilization water purifier that can be supplied stably.

Seawater sterilized with the 60 / min UV sterilization cleaning apparatus of the present invention was used for cleaning seafood (such as sea urchins), particularly for sea urchin cleaning and processing. A sea urchin with excellent quality and quality was maintained without causing any changes in the sea urchin's body and taste. A large amount of treated water is required, and the ultraviolet sterilized water purification apparatus of the present invention that can obtain a large amount of treated seawater without adding a bactericidal agent such as ozone or chlorine should be very suitable for washing fish and shellfish. I understood.
In addition, seawater sterilized by an ultraviolet sterilization water purifier was made on the ship, and the fish and shellfish caught therein were washed and stored in a refrigerator. After washing the fish, it was stored frozen. Even after long-term refrigeration and frozen storage, the taste of seafood did not change.

FIG. 2 is an implementation schematic diagram of the sterilizer 100. Sterilization container 300 Sterilization tank design drawing 4 sterilization tanks 8 sterilization tanks 6 linked sterilization containers UV lamp intensity and distance Relationship between irradiation intensity of germicidal lamp and time / distance Comparison of UV lamp intensity and distance between water and air Outline flow chart of touch panel control

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Ultraviolet sterilization water purification apparatus 101 Inlet 102 Outlet 103 Ultraviolet lamp socket 104 Ultraviolet lamp 105 Sterilization tank 106 Sterilization tank housing 107 Inflow pipe 108 Outflow pipe 109 Tank partition plate 110 Processing flow path 111 Flow path pipe 112 Connection pipe 113 Mount 114 Sound wave generator 115 Magnetostrictive vibrator 200 Lamp power supply 201 Flow meter 202 Drive valve 203 Pressure sensor 300 Sterilization container 400 Touch panel 401 Sequencer

Claims (6)

An ultraviolet sterilization water purifier mainly comprising a sterilization tank housing having a honeycomb structure, an ultraviolet irradiation unit, and an ultrasonic cleaning unit. The ultraviolet sterilization water purifier according to claim 1, wherein the sterilization tank housing having a honeycomb structure has a structure in which a sterilization tank made of mirror surface stainless steel is continuously communicated. The ultraviolet sterilization water purifier according to claim 1 or 2, wherein the ultraviolet irradiation unit includes an ultraviolet lamp socket and an ultraviolet lamp, and the ultraviolet lamp is a low-pressure mercury lamp and has a low output. The ultrasonic cleaning unit is composed of a magnetostrictive vibrator distributed from an ultrasonic transmitter, and the magnetostrictive vibrator is attached to the bottom of the sterilization tank to remove deposits in the sterilization tank and / or the ultraviolet lamp. The ultraviolet sterilization water purifier according to any one of claims 1 to 3. The ultraviolet sterilization water purifier according to any one of claims 1 to 4, comprising a touch panel control panel for starting business control and power supply, amount of treated water, irradiation amount, lamp life control, and safety management control. The ultraviolet sterilizing water purifier according to any one of claims 1 to 5, wherein the apparatus is used for washing seafood on a ship or on a vehicle.

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