JP2001246369A - Water cleaning device of adsorbent regeneration type - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water cleaning device of adsorbent regeneration type having a means for regenerating an adsorbent which has lost the adsorption performance of hazardous components by hydrogen peroxide which is formed by irradiating water with the UV rays from a UV lamp. SOLUTION: The adsorbent regeneration means of the water cleaning device consisting of a hazardous component removing section having a turbid material removing section and the regeneration means for the adsorbent is the means which brings the hydrogen peroxide formed by irradiating the water with the UV rays from the UV lamp into contact with the adsorbent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purifying apparatus in which a means for regenerating an adsorbent is a means for bringing water containing hydrogen peroxide generated by irradiating water with an ultraviolet lamp into contact with the adsorbent.

[0002]

2. Description of the Related Art Tap water contains odorous components such as harmful organic substances, disinfectant and germicidal odor, and fine particle components. To make this tap water safer and more delicious,
A water purifier provided with a turbidity removing section and a harmful component removing section is used. This type of water purifier is classified into a stationary type, a faucet direct connection type, an undersink type, a built-in faucet type, etc., depending on the installation mode, and most of them are provided with tap water raw water in the water purifier. It has a structure that discharges as purified water after purifying with a filter medium.

Conventionally, this type of filter medium has a function of removing water odor, mold odor, trihalomethane and the like by water using an adsorbent such as activated carbon, and removing bacteria and turbidity components by a hollow fiber membrane filter. Although it is known that activated carbon is an adsorbent, its performance decreases when the amount of adsorption is saturated, and the water is replaced with a new one in order to maintain the purification performance (Japanese Patent Laid-Open No. 11-656). Alternatively, a water purifier (Japanese Patent Laid-Open No. 11-235276) of a method of regenerating has been proposed.

[0004]

However, the water purifier of the method of replacing with a new one in order to maintain the purification performance is not economical because the adsorbent is periodically replaced, and the treatment of the used adsorbent is not economical. It takes time and effort. In addition, the water purifier of the heating and regenerating method in which the adsorbent is heated and the harmful components adsorbed on the adsorbent are desorbed and regenerated is used to heat the adsorbent to about 100 degrees. It is necessary to use a heat-resistant material for nearby parts.
Further, since a temperature control device and a steam discharge device for heating are required to prevent abnormal overheating, it is not economical to increase the size of the device.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. In a water purification apparatus in which a turbidity removing unit removes turbidity and a harmful component removing unit removes harmful components, the present invention provides It is an object of the present invention to provide a water purification apparatus provided with an adsorbent regenerating means that is a method of irradiating water with ultraviolet light from an ultraviolet lamp from the adsorbent and bringing the generated hydrogen peroxide into contact with the adsorbent. According to the present invention, since there is no need to replace the adsorbent, it is economical and hassle-free treatment of the adsorbent. Ejection devices are not required.

[0006]

Means for Solving the Problems and Action / Effects According to a first aspect of the present invention, there is provided a method for regenerating an adsorbent, the method comprising the steps of: An adsorbent regeneration type water purification apparatus is provided, which is means for bringing water containing hydrogen into contact with activated carbon.

[0007] Irradiation of ultraviolet light to tap water or tap water generates hydrogen peroxide in the process of decomposing water and decomposing organic substances contained in tap water or tap water (FIG. 1). Since hydrogen peroxide is an oxidizing agent, it oxidizes and decomposes organic matter. Organic substances, which are harmful components adsorbed on an adsorbent such as activated carbon, react with hydrogen peroxide and are oxidatively decomposed into harmless carbon dioxide and water.

[0008] Therefore, the adsorbent on which the harmful organic substances are adsorbed is decomposed and removed and regenerated by passing water containing hydrogen peroxide. FIG. 2 shows the relationship between the amount of water passing and the harmful component removal performance of a water purification device in which hydrogen peroxide of the present invention is periodically passed through and the adsorbent is regenerated.

Further, since hydrogen peroxide has a bactericidal activity,
It is also possible to sterilize bacteria that have propagated on the adsorbent,
In a conventional water purification apparatus, a sterilization filter such as a hollow fiber membrane filter is required downstream of the adsorbent.

The water purification apparatus of the present invention makes it possible to regenerate the adsorbent by bringing the water containing hydrogen peroxide generated by irradiating the water with an ultraviolet lamp into the adsorbent, so that the adsorbent can be regenerated. A water purification device without a decrease in water can be provided. Therefore, there is no need to periodically replace the adsorbent, which is economical, and there is no need to treat the used adsorbent. Further, since there is no need to heat and regenerate, there is no need to use a heat-resistant material for the cartridge containing the adsorbent or the parts near the cartridge. Further, a temperature control device and a steam discharge device at the time of heating are unnecessary for preventing abnormal overheating, and the device is economical without being increased in size. Furthermore, the bacteria that propagate on the adsorbent can be sterilized by the hydrogen peroxide, so that a disinfection filter is unnecessary downstream of the adsorbent.

As a preferred embodiment, there is provided an adsorbent regenerating type water purifying apparatus, wherein the turbidity removing section is disposed on the inflow side of the treated water from an ultraviolet lamp which is a means for regenerating the adsorbent. I do.

When an ultraviolet lamp is used in water, the surface of an excimer lamp protective tube that comes into contact with water after many years of use,
Alternatively, a turbid component adheres to the surface of the protective plate, and the transmittance of ultraviolet rays from an ultraviolet lamp decreases. Therefore, the output of ultraviolet rays irradiated to water decreases, and the amount of generated hydrogen peroxide decreases.

According to the water purification apparatus of the present invention, the treated water from which the turbidity has been removed in the turbidity removing section passes through the ultraviolet lamp section, so that the turbidity does not adhere to the surface of the protective tube or the surface of the protective plate. As a result, protective tubes,
Alternatively, since the ultraviolet transmittance of the protective plate does not decrease and the amount of generated hydrogen peroxide does not decrease, the regeneration of the adsorbent is favorably performed. Further, a washing operation for removing turbidity adhered to the surface of the protective tube or the surface of the protective plate becomes unnecessary.

As a further preferred embodiment, means for detecting the flow rate of the treated water passing through the ultraviolet lamp is provided, and the ultraviolet output from the ultraviolet lamp is controlled in accordance with the flow rate. Provide equipment.

When water is irradiated with ultraviolet rays, water and organic substances are decomposed to generate hydrogen peroxide. If the flow rate changes when the ultraviolet intensity is fixed, the concentration of hydrogen peroxide changes according to the flow rate. Further, since the amount of generated hydrogen peroxide is proportional to the intensity of the ultraviolet light, even if the flow rate is changed, if the ultraviolet output is changed according to the flow rate, adsorbent regenerated water containing hydrogen peroxide at a certain concentration can be obtained. When regenerating the adsorbent by bringing the water containing hydrogen peroxide into contact with the adsorbent, the amount of water containing hydrogen peroxide required for regeneration increases when the water has a low concentration of hydrogen peroxide. Not

According to the water purification apparatus of the present invention, means for detecting the flow rate of treated water passing through the ultraviolet lamp is provided, and the ultraviolet output from the ultraviolet lamp can be controlled according to the flow rate. However, the concentration of hydrogen peroxide can be controlled to a target concentration. As a result, the regeneration of the adsorbent is favorably performed, and economical and safe water can be supplied.

As a further preferred embodiment, a water flow meter for measuring the amount of water flowing through the adsorbent is provided, and a regeneration process is performed according to the amount of water measured by the water flow meter. Water purification device is provided.

[0018] The amount of water flow within a certain period of time varies depending on the type of use and the situation of the water purification device. Therefore, if the control is performed to periodically regenerate the adsorbent over time, the water purifier may be used in a state where the adsorbent has reduced adsorption performance,
Harmful components may not be adsorbed and removed and may enter the purified water. Also, if the timing of regeneration is shortened in time, the adsorbent will be regenerated even though the adsorbing performance of the adsorbent has not decreased, and the ultraviolet lamp is turned on uselessly, which is not economical. Useless water will be used.

According to the water purifying apparatus of the present invention, a water flow meter for measuring the amount of water flowing to the adsorbent is provided, and the regeneration treatment is performed according to the amount of water measured by the water flow meter. The regeneration of the adsorbent is performed when or immediately before the adsorption performance is reduced, so that safe water can be supplied. Furthermore, since the unnecessary regeneration is not performed, the ultraviolet lamp is not turned on unnecessarily, so that it is economical, and no wasteful water is used.

As a further preferred embodiment, a water flow meter for measuring the amount of water flowing to the adsorbent is provided, and the output of the ultraviolet lamp is controlled according to the amount of water measured by the water flow meter. Provided is a water regenerating type water purification device.

[0021] The amount of water passing through a certain period of time varies depending on the type of use and the situation of the water purification device. Therefore, the amount of harmful components adsorbed on the adsorbent within a certain period differs. If the control is performed to regenerate the activated carbon periodically over time, the amount of harmful components adsorbed on the adsorbent is small and the adsorbent is regenerated even though the adsorption performance is not reduced, and the ultraviolet lamp is wasted. It is not economical because it is turned on, and further wasteful water is used.

According to the water purification apparatus of the present invention, a water flow meter for measuring the amount of water flowing to the adsorbent is provided, and the output of the ultraviolet lamp can be controlled according to the amount of water measured by the water flow meter. Therefore, when the amount of passing water is small and the amount of harmful components adsorbed on the adsorbent is small, it is possible to lower the ultraviolet output and lower the hydrogen peroxide concentration. for that reason,
Since the output of the ultraviolet light from the ultraviolet lamp can be made suitable, it is economical without waste of power.

As a further preferred embodiment, the ultraviolet lamp is housed in a protective tube through which ultraviolet light can pass, or in a housing portion in which a part of the lamp housing portion is formed of a protective plate through which ultraviolet light can pass, and the atmosphere in the housing portion is reduced. An adsorbent regeneration type water purifying apparatus is provided, wherein the atmosphere is 300 Torr or less or an atmosphere mainly containing a gas that does not absorb ultraviolet rays from an ultraviolet lamp.

Ultraviolet light output from an ultraviolet lamp hardly passes through a protective tube or a protective plate made of a general soda-lime glass or the like. Also, the transmittance is low in glass containing a large amount of components other than silicon and oxygen, such as natural quartz glass, but the transmittance is low in synthetic quartz glass and magnesium fluoride glass containing only trace amounts of components other than silicon and oxygen. high. Further, when the atmosphere of the storage section is an atmosphere containing oxygen, it is absorbed by oxygen molecules and the ultraviolet intensity is reduced.
Nitrogen gas, which is a gas that does not absorb ultraviolet rays from an ultraviolet lamp, is preferable.

Accordingly, the protection tube through which the ultraviolet rays from the ultraviolet lamp can pass, or a part of the lamp housing portion is housed in the housing portion formed of the protection plate through which the ultraviolet light can pass, and the atmosphere in the housing portion is 300 Torr or less. Alternatively, by setting the atmosphere mainly composed of a gas that does not absorb ultraviolet rays from an ultraviolet lamp, hydrogen peroxide is efficiently generated, and the adsorbent is satisfactorily regenerated.

In a further preferred embodiment, the liquid contacting portion on the inner wall of the hydrogen peroxide generating section to which the ultraviolet light from the ultraviolet lamp is irradiated is made of a material reflecting ultraviolet light from the ultraviolet lamp. Provide a water purification device of the system.

The ultraviolet light output from the ultraviolet lamp is absorbed by the inner wall of the hydrogen peroxide generating section. To generate hydrogen peroxide efficiently by reacting it with organic matter and water molecules in your hand, reduce the amount of ultraviolet light absorbed by the inner wall of the hydrogen peroxide generator and reflect it to make it react again with organic matter and water molecules. desirable. For this reason, it is desirable that the material of the inner wall of the hydrogen peroxide generating section is made of aluminum, stainless steel, or the like having high ultraviolet reflectance.

Therefore, by forming the liquid contact portion on the inner wall of the hydrogen peroxide generating section to which the ultraviolet light from the ultraviolet lamp is irradiated with a material that reflects the ultraviolet light from the ultraviolet lamp, hydrogen peroxide is efficiently generated, The regeneration of the adsorbent is performed well.

As a further preferred embodiment, there is provided an adsorbent regeneration type water purifying apparatus, wherein the ultraviolet lamp emits ultraviolet light having a wavelength of 150 nm or more and 200 nm or less.

The shorter the wavelength of ultraviolet light, the higher the energy of photons. The energy of photons having a wavelength of 200 nm or less can easily break bonds such as carbon double bonds (C = C) in organic compounds that are difficult to decompose. In addition, it is absorbed by water, and satisfactorily generates hydrogen peroxide necessary for regeneration of the adsorbent. Further, ultraviolet rays having a wavelength of 150 nm or less are absorbed by a protective tube or a protective plate of the ultraviolet lamp, and therefore, the amount of ultraviolet rays that contribute to the generation of hydrogen peroxide is extremely small.

Therefore, a wavelength of 150 nm or more and 200 n
Hydrogen peroxide can be efficiently generated from organic matter and water molecules in water by an ultraviolet lamp that emits ultraviolet light of m or less, so that the adsorbent is favorably regenerated.

As a further preferred embodiment, there is provided an adsorbent regeneration type water purifying apparatus, wherein the ultraviolet lamp is an excimer lamp.

FIG. 3 shows the relationship between the ultraviolet output and the output wavelength of the mercury lamp and the excimer lamp which emit ultraviolet light. An excimer lamp can provide a single wavelength of ultraviolet light and an ultraviolet output with an electrically high conversion efficiency as compared with a mercury lamp.

Therefore, by providing an excimer lamp as an ultraviolet lamp, ultraviolet light having a high ultraviolet output can be obtained, so that hydrogen peroxide is efficiently generated and the adsorbent can be satisfactorily regenerated. Further, since ultraviolet light having a higher conversion efficiency can be obtained electrically, it is economical.

As a further preferred embodiment, there is provided an adsorbent regenerating type water purifying apparatus, wherein the excimer lamp is a lamp which emits ultraviolet light having a main wavelength of 172 nm.

A xenon excimer lamp having an ultraviolet ray of 172 nm as a main wavelength can stably output ultraviolet light having a higher output than other excimer lamps with a high electrical conversion efficiency, so that hydrogen peroxide is efficiently generated. In addition, the regeneration of the adsorbent is favorably performed.

[0037]

Embodiments of the present invention will be described below with reference to the drawings. The turbidity removing portion used in this embodiment includes a granular filter, a metal, or a resin-made nonwoven fabric or metal, or a resin-made mesh filter, a sintered filter, a hollow fiber membrane filter, or a RO made of ceramic, metal, resin, or ceramic. A film or the like can be used. The turbidity removing filter is selected from the above according to the water quality and the use form.

As the adsorbent, there are activated carbon, alumina, zeolite and the like, but activated carbon is desirable from the viewpoint of adsorption performance.

FIG. 4 shows a hydrogen peroxide generator 1 used in the embodiment.
FIG. Inside the hydrogen peroxide generator 1, 172 n is provided in a protective tube 3 made of synthetic quartz glass through which ultraviolet rays pass.
An excimer lamp 5 that outputs ultraviolet rays of m is accommodated, and nitrogen gas is sealed in the excimer lamp 5 and the space 7 in the protective tube 3. The inner wall of the hydrogen peroxide generator 1 is formed of a material 8 having a high ultraviolet reflectance, such as aluminum or stainless steel. The excimer lamp 5 is electrically connected to the control device 9 and the power supply unit 11. The water 13 to be treated passes through a flow path 15 between the hydrogen peroxide generator 1 and the protection tube 3 in which the excimer lamp 5 is stored.

FIG. 5 shows a hydrogen peroxide generator 1 used in the embodiment.
It is a detailed view of another form of. The excimer lamp 5 that outputs ultraviolet light of 172 nm has a protective plate 4 made of synthetic quartz glass through which ultraviolet light is transmitted and a material 8 having high reflectance of ultraviolet light, such as aluminum or stainless steel, on the side in contact with the water 13 to be treated. It is stored in the hydrogen peroxide generator 1. The space 7 in which the excimer lamp 5 is stored is filled with nitrogen gas that does not absorb ultraviolet rays. The liquid contact part 17 in the hydrogen peroxide generation part 1 with which the water to be treated 13 comes into contact is made of aluminum, stainless steel, or the like, which is a material having a high ultraviolet reflectance. The excimer lamp 5 includes a control device 9 and a power supply unit 1.
1 electrically.

FIG. 6 shows a hydrogen peroxide generator 1 used in the embodiment.
It is another detail drawing of. The hydrogen peroxide generator 1 is provided in a water storage tank 55 for storing treated water. Further, in the hydrogen peroxide generation unit 1, an excimer lamp 5 that outputs ultraviolet light of 172 nm is housed in a protective tube 3 made of synthetic quartz glass through which ultraviolet light is transmitted, and the excimer lamp 5 and the space 7 in the protective tube 3 are accommodated. Is filled with nitrogen gas. The excimer lamp 5 is electrically connected to the control device 9 and the power supply unit 11. The treated water 13 is in contact with the outer wall of the protection tube 3 in which the excimer lamp 5 is stored.

In the following embodiment of the water purifier 2 of the adsorbent regeneration type, the hydrogen peroxide generator 1 is in contact with the water to be treated of the protective tube 3 containing the excimer lamp 5 or the protective plate 4. To prevent turbidity from adhering to the part and lowering the UV output,
On the flow path of the water to be treated, a turbidity removing section 19, a hydrogen peroxide generating section 1 using ultraviolet light from the excimer lamp 5, and a harmful component adsorption removing section 6 using an adsorbent are arranged in this order from the upstream side. Further, by providing the flow rate sensor 21 and the flow rate control valve 29, it becomes possible to change the ultraviolet output from the excimer lamp 5 to an output corresponding to the flow rate or to a suitable flow rate. Further, by the flow sensor 21,
The flow rate of water treated by this device can be measured.

FIG. 7 shows an embodiment of the water purification apparatus according to the present invention. The water purifier 2 of the adsorbent regeneration type is disposed downstream of the tap water supply pipe 23 and the faucet opening / closing valve 25. In the water purification device 2, the flow sensor 21, the flow control valve 29, the turbidity removing unit 19, the hydrogen peroxide generating unit 1, the harmful component adsorption removing unit 6,
A water flow path is provided in the order of the purified water outlet 27. The control device 9 includes a hydrogen peroxide generator 1 and a power supply unit 1.
1. It is electrically connected to the flow control valve 29 and the flow sensor 21. The flow rate sensor 21 and the flow rate control valve 29 may be arranged in any of the water flow paths between the faucet opening / closing valve 25 and the purified water discharge port 27.

Next, the water purification operation of the embodiment will be described. When the user opens the open / close valve 25 of the faucet,
Tap water flows into the water purification device 2 from the tap water supply pipe 23, and the flow control valve 29 → the flow sensor 21 → the turbidity removing unit 19 → the hydrogen peroxide generating unit 1 → the harmful component adsorption removing unit 6
, And purified water is discharged from the purified water discharge port 27.

The opening of the faucet opening / closing valve 25 is detected by the flow rate sensor 21, and the control unit 9 stores the flow rate. The turbidity contained in the water is removed by the turbidity removing unit 19, and the purified water from which the harmful components are removed by the harmful component adsorption and removal unit 6 is discharged through the water discharge port 27.

According to this step, it is possible to supply safe water by removing the turbidity of tap water and removing harmful components by the adsorption ability of the adsorbent.

Next, the adsorbent regeneration operation of the embodiment will be described. When reaching the water flow rate at which the adsorption removal performance of the adsorbent starts to decrease, the user opens the open / close valve 25 of the faucet,
Tap water flows into the water purification device 2 from the tap water supply pipe 23, and the flow control valve 29 → the flow sensor 21 → the turbidity removing unit 19 → the hydrogen peroxide generating unit 1 → the harmful component adsorption removing unit 6
, The reclaimed water is discharged from the purified water discharge port 27, and the adsorbent of the harmful component adsorption and removal unit 6 is regenerated.

The opening of the faucet opening / closing valve 25 is detected by the flow sensor 21, and the electric energy of the power supply 11 is supplied to the hydrogen peroxide generator 1 via the controller 9 in accordance with the flow rate. Ultraviolet light is irradiated on the water from the lamp. Irradiation with ultraviolet rays generates water containing hydrogen peroxide, comes into contact with the adsorbent on which the harmful components are adsorbed, and reacts with the harmful components and hydrogen peroxide. The harmful components are oxidized and decomposed into harmless carbon dioxide and water, and the adsorbent is regenerated, so that the adsorption performance is restored.

The concentration of hydrogen peroxide can be calculated from the flow rate detected by the flow rate sensor 21 and the ultraviolet output at that time. In order to make the hydrogen peroxide concentration suitable for the regeneration of the adsorbent, the ultraviolet output is adjusted according to the flow rate. By varying the flow rate or controlling the flow rate control valve 29 to vary the flow rate, the hydrogen peroxide concentration can be varied.

In the embodiment, the purified water is supplied to the purified water spout 2
Although the system is configured to discharge water from the outlet 7, a method of providing a flow path of a separate path and a flow path switching valve and discharging water from a reclaimed water discharge port different from the purified water discharge port 27 is also possible. Further, a mode may be provided in which a means is provided for notifying the user that it is time to regenerate when the amount of water passing reaches the point at which the adsorption removal performance of the adsorbent starts to decrease.

In this step, the adsorbent on which the harmful components have been adsorbed is decomposed and regenerated by water containing hydrogen peroxide generated by ultraviolet light from an excimer lamp. According to the present invention, tap water turbidity can be removed, harmful components can be supplied by removing the harmful components by the adsorption capacity of the adsorbent, and safe water can be supplied. It is possible to provide an adsorbent regeneration type water purification apparatus that does not need to be replaced.

[Brief description of the drawings]

FIG. 1 shows the relationship between ultraviolet output and hydrogen peroxide concentration.

FIG. 2 shows the relationship between the water flow rate and the harmful component adsorption removal rate.

FIG. 3 shows the relationship between the ultraviolet output and the output wavelength of a mercury lamp and an excimer lamp.

FIG. 4 is a detailed view of a hydrogen peroxide generator used in an embodiment of the present invention.

FIG. 5 is a detailed view of another embodiment of the hydrogen peroxide generator used in the embodiment of the present invention.

FIG. 6 is a detailed view of still another embodiment of the hydrogen peroxide generator used in the embodiment of the present invention.

FIG. 7 is a configuration diagram of an embodiment of a water purification device according to the present invention.

[Explanation of symbols]

 1: Hydrogen peroxide generating unit 2: Water purifying device with adsorbent regeneration method 3: Protective tube 4: Protective plate 5: Excimer lamp 6: Harmful component adsorption removing unit 7: Space 8: Material with high ultraviolet reflectance 9: Control device 11: Power supply unit 13: Water to be treated 17: Liquid contacting unit 19: Turbidity removing unit 21: Flow sensor 23: Water supply pipe 25: Washing open / close valve 27: Purified water spout 29: Flow control valve 55: Water storage tank

Continuation of the front page (72) Inventor Shinra Endo 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Prefecture Totoki Equipment Co., Ltd. (72) Inventor Shigeru Ando 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka No. 1 To-Toki Equipment Co., Ltd. F-term (reference) 4D024 AA02 AB11 BA02 BC01 CA11 DA07 DB03 DB10 DB23 4D037 AA02 AB04 AB14 BA18 BB01 CA01 CA02 4G066 AA05B AA20B AA61B CA01 CA02 CA31 DA07 GA11 GA18 GA27 GA31

Claims (10)

[Claims] 1. A water purifying apparatus comprising a harmful component removing section provided with a turbidity removing section and an adsorbent regenerating section, wherein the adsorbent regenerating section generates peroxidation generated by irradiating water with an ultraviolet lamp. An adsorbent regenerating water purifying device, which is means for bringing water containing hydrogen into contact with the adsorbent. 2. The water purifying apparatus according to claim 1, wherein the turbidity removing section is disposed on the inflow side of the treated water from an ultraviolet lamp as a means for regenerating the adsorbent. The water purifier of the adsorbent regeneration method as described in the above. 3. The water purifier according to claim 1, further comprising means for detecting a flow rate of the treated water passing through the ultraviolet lamp, and controlling an ultraviolet output from the ultraviolet lamp according to the flow rate. 3. An adsorbent regeneration type water purifying apparatus according to claim 1. 4. The water purifying apparatus according to claim 1, further comprising a water flow meter for measuring a water flow amount flowing through the adsorbent, and performing the regeneration process according to the water flow amount measured by the water flow meter. The adsorbent regeneration type water purification apparatus according to claim 1, wherein: 5. The water purifying apparatus according to claim 1, further comprising a water flow meter for measuring an amount of water flowing to the adsorbent, and controlling an output of the ultraviolet lamp according to the amount of water measured by the water flow meter. 5. The water purifying apparatus according to claim 1, wherein the water is purified by an adsorbent regeneration method. 6. The ultraviolet lamp is housed in a protective tube through which ultraviolet light can pass, or in a housing portion in which a part of the lamp housing portion is formed of a protective plate through which ultraviolet light can pass, and the atmosphere in the housing portion is 300 Torr or less. 6. The water purifying apparatus according to claim 1, wherein the atmosphere is mainly composed of a gas which does not absorb ultraviolet rays from an ultraviolet lamp. 7. A liquid-contacting part on an inner wall of a hydrogen peroxide generating part to which the ultraviolet light from the ultraviolet lamp is irradiated is made of a material reflecting ultraviolet light from the ultraviolet lamp. The water purifying apparatus of the adsorbent regeneration method according to 1. 8. The method according to claim 1, wherein the ultraviolet lamp is at least 150 nm and at least 20 nm.
The water purifier according to claim 1, wherein the water purifier is a lamp that emits ultraviolet light of 0 nm or less. 9. The water purifier according to claim 1, wherein the ultraviolet lamp is an excimer lamp. 10. The water purifier according to claim 1, wherein the excimer lamp is a lamp that emits ultraviolet light having a main wavelength of 172 nm.