JP5684519B2 - Liquid processing equipment - Google Patents

Description

  The present invention relates to a liquid processing apparatus that performs liquid processing such as sterilization of a liquid to be processed and control of microorganisms and small animals in the liquid to be processed by ultraviolet irradiation. In particular, the present invention relates to a liquid processing apparatus in which the liquid processing is performed by ultraviolet irradiation from an electrodeless discharge tube that is immersed in the liquid to be processed or floated on the liquid surface of the liquid to be processed.

  2. Description of the Related Art Conventionally, liquid processing apparatuses that perform liquid processing such as sterilizing a liquid to be processed by irradiating ultraviolet rays and controlling microorganisms, small animals, and the like contained in the liquid to be processed are known. Recently, a liquid processing apparatus of a type called an immersion type has been widely used in which the ultraviolet discharge tube of such a liquid processing apparatus is immersed in the liquid to be processed so that the liquid to be processed is irradiated with ultraviolet light from the inside rather than from the outside. It has been. Here, FIG. 4 shows a conventional example of the immersion type liquid processing apparatus.

  A conventionally known immersion type liquid treatment apparatus as shown in FIG. 4 is a waterproof treatment of an electroded ultraviolet radiation discharge tube 1 including an ultraviolet discharge tube H, a socket S, a wire (lead wire) W and the like. Then, the ultraviolet discharge tube H is supported by the support member J so that the entire ultraviolet discharge tube H and the entire socket S are completely immersed in the liquid P to be treated stored in the treatment tank A through the water conduit X. Arranged in a state. Then, by supplying power to the ultraviolet discharge tube H from a ballast (high frequency power source) B or the like disposed outside the processing tank A, ultraviolet rays are emitted from the inside of the processing tank A to the liquid P to be processed. It can be irradiated. Such a liquid treatment apparatus is used in a water tank of several tons to a thousand tons, for example, for storing cooling water used in thermal power generation or water used for food processing (one or more discharge tubes H are provided in the water storage tank). Is located).

  By the way, in a conventional immersion type liquid processing apparatus, an ultraviolet radiation discharge tube 1 having an electrode (in other words, having a socket S) is used for ultraviolet irradiation. Since the ultraviolet discharge tube H used in the present invention is an electrode, its life is limited by the electron emission material of the electrode, and generally has a life of about 10,000 hours at most. Therefore, the conventional immersion type liquid processing apparatus has a drawback that it is necessary to frequently perform an operation of removing the ultraviolet discharge tube H from the socket S, taking it out from the processing tank A, and replacing it with a new one. Further, since the socket S that is electrically operated at that time is exposed to the liquid P to be treated, there is a problem that the socket S itself is likely to break down.

  Therefore, instead of the electroded ultraviolet radiation discharge tube 1 having a relatively short life, the electrodeless ultraviolet radiation discharge tube having a life of about 6 to 10 times and having a socket S is not provided. It has already been considered to reduce the frequency of discharge tube replacement as much as possible by using (referred to as an electrodeless discharge tube), and a liquid processing apparatus using an electrodeless ultraviolet radiation discharge tube based on this idea has been proposed. ing. As an example of such an electrodeless ultraviolet radiation discharge tube and a liquid processing apparatus using the same, the apparatuses described in Patent Documents 1 to 4 shown below are examples.

Japanese Patent Laid-Open No. 10-134777 JP 2007-173122 A JP 2003-159314 A JP 2010-92774 A

A conventional ultraviolet irradiation apparatus using an electrodeless ultraviolet radiation discharge tube excites an electrodeless discharge tube including an air-core coil at a radio frequency of 13.36 MHz, as disclosed in Patent Document 1, for example. It is known that mercury discharge (that is, irradiation with ultraviolet rays) is performed by the above method. However, such an apparatus is not suitable for a discharge tube for liquid processing and cannot be used for liquid processing. That is, in the apparatus shown in Patent Document 1, since discharge is performed using a high frequency of 13.36 MHz, driving in a liquid to be processed mainly having water having a relative dielectric constant of about 80 is very high. There is a drawback that electromagnetic waves leak and energy is lost, which is not suitable for water treatment. For example the dielectric constant epsilon, the drive frequency f, when the electric field strength applied E, the energy loss of the RF power of the dielectric is represented as per unit volume "εfE ^2/2". That is, the high-frequency loss is large in proportion to the drive frequency. In addition, since an air-core coil is used, there is a drawback in that the coupling between the primary current of the coil and the secondary current of the discharge tube is poor and energy transmission is low.

In addition, there are devices such as devices disclosed in Patent Document 2 or Patent Document 3 that perform discharge (that is, ultraviolet irradiation) using microwave discharge. In this way, an electrodeless discharge tube is excited. Therefore, it is also not suitable for liquid treatment from the viewpoint of energy loss and energy transmission described above.
Furthermore, although an apparatus as shown in Patent Document 4 is known as an electrodeless discharge tube, an apparatus that excites the discharge tube with a ferrite core instead of the air-core coil performs liquid treatment of the liquid to be treated. Therefore, it has not been considered at all to be immersed in the liquid to be treated.

  The present invention has been made in view of the above points, and is a liquid processing apparatus that has high energy efficiency and can realize further improvement in liquid processing capability such as sterilization of a liquid to be processed and control of microorganisms in the liquid to be processed. Is to provide.

The liquid processing apparatus according to the present invention includes an electrodeless ultraviolet discharge tube having a curved shape, a ferrite core disposed so as to be linked to the discharge tube so as to surround a part of the discharge tube, and the ferrite core An induction coil wound around and a high frequency power source for supplying a high frequency current to the induction coil via a lead wire, wherein at least the ferrite core, the induction coil, and the lead wire are waterproofed, and the discharge A liquid processing apparatus that generates ultraviolet rays from the discharge tube by energizing the induction coil in a state where the tube is immersed in the liquid to be processed, and processes the liquid to be processed with the generated ultraviolet rays , The discharge tube is provided by an appendage including the ferrite core and the induction coil so that the discharge tube is disposed upright or flat or inclined in the liquid to be treated. Characterized by comprising the structure in which to adjust the body specific gravity center.

According to the present invention, a discharge tube having a curved shape is entirely formed by an additive including the ferrite core and the induction coil so that the discharge tube is arranged upright or flat or inclined in the liquid to be treated. Since it has a structure with a adjusted center of gravity, it is possible to arrange a curved discharge tube in an arbitrary position in the liquid to be processed without using a special support device, etc. There is an excellent effect that it can be easily arranged in a posture according to (space). In addition, since the discharge tube can be arranged in an arbitrary posture in the liquid to be processed without using a special support device or the like, the discharge tube can float to some extent in the liquid to be processed and can be appropriately moved. The ultraviolet radiation for the liquid to be treated can be made as uniform as possible without being biased to a specific location.
According to another aspect, the liquid processing apparatus according to the present invention includes an electrodeless ultraviolet discharge tube, a ferrite core arranged in a manner linked to the discharge tube so as to surround a part of the discharge tube, and the ferrite An induction coil wound around a core; and a high-frequency power source for supplying a high-frequency current to the induction coil via a lead wire, wherein at least the ferrite core, the induction coil, and the lead wire are waterproofed, A liquid processing apparatus for generating ultraviolet rays from the discharge tube by energizing the induction coil while the discharge tube is immersed in the liquid to be processed, and processing the liquid to be processed with the generated ultraviolet rays. The discharge tube includes the ferrite core and the induction coil so that the total specific gravity including the ferrite core and the induction coil is the same as the specific gravity of the liquid to be treated. It is configured to become the total weight, the discharge tube and being located at a predetermined height to be treated in the liquid.
According to this, the discharge tube can be positioned at a predetermined height (that is, an arbitrary depth) in the liquid to be processed without using a special support device or the like. In addition, since the discharge tube can be positioned at a predetermined height (that is, an arbitrary depth) in the liquid to be processed without using a special support device or the like, the discharge tube is in the liquid to be processed in the same manner as described above. Therefore, the ultraviolet radiation for the liquid to be treated can be made as uniform as possible without being biased to a specific location.
According to yet another aspect, the liquid processing apparatus according to the present invention includes an electrodeless ultraviolet discharge tube, a ferrite core disposed in a manner linked to the discharge tube so as to surround a part of the discharge tube, An induction coil wound around a ferrite core, and a high-frequency power source for supplying a high-frequency current to the induction coil via a lead wire, at least the ferrite core, the induction coil, and the lead wire are waterproofed, In a liquid processing apparatus that generates ultraviolet rays from the discharge tube by energizing the induction coil while the discharge tube is immersed in a liquid to be processed, and performs processing of the liquid to be processed by the generated ultraviolet rays. The apparatus further comprises moving means for moving the discharge tube in a liquid to be processed or on a liquid surface of the liquid to be processed along a preset movement path. Also by this, since the discharge tube can be appropriately moved through the moving means, the ultraviolet radiation with respect to the liquid to be processed can be made as uniform as possible without being biased to a specific location.
Further, in the present invention, an electrodeless ultraviolet discharge tube linked to the ferrite core, which generates ultraviolet rays by passing high-frequency current through a lead wire to an induction coil wound around the ferrite core, After the lead wire including the ferrite core and the induction coil is waterproofed, the discharge tube is installed in a state of being immersed in the liquid to be processed, and the liquid to be processed is processed by ultraviolet rays generated from the ultraviolet discharge tube. They are to perform. Such an electrodeless ultraviolet discharge tube has a longer life than the electroded discharge tube used in the prior art, and therefore, the frequency of replacement of the discharge tube can be reduced as compared with the conventional one. Further, since the discharge tube is excited in response to energization of the induction coil using the ferrite core, the coupling between the primary current of the coil and the secondary current of the discharge tube is improved, and the energy transfer can be increased. Furthermore, by adjusting the drive frequency of the induction coil, it is possible to reduce high-frequency loss due to the liquid to be treated mainly composed of water, and from the high-frequency power source side to the discharge tube side without increasing the ferrite core. thereby efficiently transferring energy Ru easy. That is, it is possible to provide a liquid processing apparatus that is more energy efficient and that can further improve the liquid processing capability such as sterilization of the liquid to be processed and control of microorganisms in the liquid to be processed, and is smaller and easier to use.

According to the present invention, since the discharge tube is appropriately floated in the liquid to be processed or can be appropriately moved through the moving means, the ultraviolet radiation with respect to the liquid to be processed is as uniform as possible without being biased to a specific location. The effect that it can be made. Further, the electrodeless ultraviolet discharge tube is disposed in a state where at least the ferrite core, the induction coil, and the lead wire are waterproofed and immersed in the liquid to be treated, and the induction coil is energized in that state to thereby pass the above Since the liquid to be treated is liquid-treated by generating ultraviolet rays from the discharge tube, energy efficiency is improved and further improvement of the liquid processing capability such as sterilization of the liquid to be treated and control of microorganisms in the liquid to be treated is realized. Thus, the liquid processing apparatus that is smaller and easier to use can be provided.

It is a conceptual diagram which shows one Example of the liquid processing apparatus which concerns on this invention. It is a perspective view which shows another Example of a liquid processing apparatus. It is a perspective view which shows another Example of a liquid processing apparatus. It is a conceptual diagram which shows the liquid processing apparatus known conventionally.

  Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

  FIG. 1 is a conceptual diagram showing an embodiment of a liquid processing apparatus according to the present invention. As shown in FIG. 1, also in the liquid processing apparatus according to the present invention, in the processing tank A so as to be immersed in the liquid P to be processed stored in the processing tank A as in the conventional example (see FIG. 1). The liquid P to be processed flows from the water conduit X on the left side of the figure through the liquid inlet Aa to be processed and is stored in the processing tank A, and is irradiated with ultraviolet rays. Liquid treatments such as sterilization and control of microorganisms in the liquid to be treated are performed. The to-be-processed liquid P after liquid processing flows out from the inside of the processing tank A through the to-be-processed liquid outlet Ab as purified water or the like from the water conduit X on the right side in the drawing.

  The liquid processing apparatus shown in this embodiment includes one or more (only one is shown in FIG. 1) electrodeless ultraviolet radiation discharge tubes 1 (also referred to as ultraviolet lamps). Is an electrodeless mercury discharge tube, which is a looped elliptical discharge tube H in which, for example, mercury particles or mercury amalgam, which is a gas that emits ultraviolet rays, is enclosed, and a position spaced apart in the tube axis direction in the discharge tube H One or more (two examples are shown in FIG. 1) ferrite cores F1 and F2 made of a magnetic material arranged so as to be linked to the discharge tube H so as to surround the ferrite tubes F1 and F1, respectively. It includes a wire (lead wire) W wound around each of F2 to form two induction coils.

  Of course, the discharge tube H is waterproof, and at least the ferrite cores F1 and F2 and the wire W including the induction coil are subjected to waterproof treatment, so that the electrodeless ultraviolet radiation discharge tube 1 is covered. When immersed in the treatment liquid P (or when floated on the surface of the treatment liquid P as described later), the operation of the discharge tube H, that is, the ultraviolet irradiation operation is adversely affected by the treatment liquid P. I'm trying to keep things from happening. When the electrodeless ultraviolet radiation discharge tube 1 is immersed in the liquid P to be processed, the inside of the processing tank A and thus in the processing liquid P through the support member J extending from the inner wall surface such as the lower surface or the side surface of the processing tank A. The discharge tube H may be disposed at an arbitrary position such as a predetermined height or less where the liquid P to be treated is always stored. In this case, a plurality of support members J are provided with different heights on the side wall surface, or a plurality of support members J extending from the lower surface are provided with different heights, so that the inside of the processing tank A and thus in the processing liquid P The discharge tube H may be arranged at an arbitrary height position.

  Alternatively, without supporting the discharge tube H using the support member J, the discharge tube H itself is placed in a vertically placed state in which the ferrite cores F1 and F2 are in a vertical positional relationship with respect to the liquid level as shown in the figure. By adjusting the weight of each of the ferrite cores F1 and F2 (in this case, different) so as to maintain the balance, the discharge tube H is brought into a floating state at a predetermined height position in the liquid P to be processed. It is good to arrange (that is, the discharge tube H is immersed in a vertically placed state submerged perpendicularly to the liquid surface of the liquid P to be treated). This is advantageous because the liquid processing apparatus can be arranged without securing the width even when the processing tank A can be installed only in a narrow portion. Of course, the weights of the ferrite cores F1 and F2 are not limited to adjustment, but the weights of the ferrite cores F1 and F2 are set to the same weight, for example, the number of turns of the ferrite cores F1 and F2 is different. It goes without saying that the discharge tube H may be immersed in a vertically placed state submerged perpendicular to the liquid surface of the liquid P to be treated by another method.

  As shown in the drawing, the discharge tube H itself does not necessarily need to maintain a balanced state in the liquid P to be processed, and the ferrite cores F1 and F2 are arranged in an interlaced manner. It is also possible to maintain a state in which either one of the left and right sides is inclined to a deeper position (or a shallow position).

  Furthermore, although not shown in the figure, without supporting the discharge tube H using the support member J, the ferrite cores F1 and F2 are discharged in a horizontal state in which they are in the same horizontal position with respect to the liquid level. By adjusting the weight of each of the ferrite cores F1 and F2 (in this case, the same weight) so that the tube H itself keeps a balance, it floats at a predetermined height position in the liquid P to be treated. The discharge tube H may be arranged in a state (that is, the discharge tube H is immersed in a horizontally placed state where it is sunk horizontally with respect to the liquid surface of the liquid P to be treated).

  The oscillator B for supplying a high-frequency current to the wire W is disposed outside the processing tank A, that is, so as not to be immersed in the liquid P to be processed. Further, the oscillator B may be waterproofed and disposed inside the processing tank A.

  In the electrodeless ultraviolet radiation discharge tube 1 having such a configuration, when the ferrite cores F1 and F2 are excited by a high frequency current generated from the oscillator B within a frequency range of 50 kHz or more and 500 kHz or less, the discharge tube H formed in an elliptical shape is used. As a result, a secondary induced electromotive force is generated in the discharge tube H, so that a discharge in the discharge tube H occurs. And since a part of mercury particle (or mercury amalgam) enclosed in the discharge tube H exists as gas, ultraviolet rays are efficiently radiated. The electrodeless ultraviolet radiation discharge tube 1 emits ultraviolet light from the discharge tube H, thereby exhibiting a liquid processing function for sterilizing the liquid P to be processed and controlling microorganisms. That is, since the discharge tube H is made of a material that transmits desired ultraviolet rays such as quartz glass, the liquid P to be treated is irradiated from the inside of the processing tank A by the ultraviolet rays emitted from the discharge tube H. Such an electrodeless discharge tube H has a longer life than the electroded discharge tube used in the past (see FIG. 1), and the frequency of replacement of the discharge tube can be reduced compared to the conventional one.

  Here, it is known that the loss of high frequency is proportional to the driving frequency. When the driving frequency used for generating ultraviolet rays from the discharge tube H is several hundred kHz, for example, 200 kHz driving, as described above. The energy loss is reduced to about 1/70 compared with the case of 13.36 MHz driving in the conventional apparatus. Therefore, in the liquid processing apparatus shown in this embodiment, the wire W for driving the discharge tube H, the ferrite cores F1 and F2 (and their windings), etc. are in the liquid P to be processed mainly composed of water. Even if it is driven in a direct immersion, that is, in a contact state, the effect of energy loss due to water as a dielectric material is small compared to the effect of energy loss due to high frequency, so the total energy loss is less than before. The discharge tube H can be driven normally and energy-efficiently. Further, if the drive frequency is adjusted to approximately 1 MHz or less, more desirably 500 kHz or less, it is possible to easily provide an apparatus in which energy loss due to the liquid P to be treated mainly composed of water is reduced.

Further, if the permeability of the ferrite cores F1 and F2 linked to the discharge tube H is μ and the magnetic field strength is H, the ferrite cores F1 and F2 are transmitted from the oscillator B (power supply) side to the discharge tube H side via the ferrite cores F1 and F2. energy is expressed in per unit volume of the ferrite core F1, F2 "μfH ^2/2". Therefore, since the amount of energy transfer per unit volume decreases as the frequency (f) decreases, the ferrite cores F1 and F2 must be enlarged in order to transmit a certain amount of energy. For example, when driving at a frequency of 20 kHz, a ferrite core F having a size about 10 times larger than that when driving at a frequency of 200 kHz is required. Therefore, in the present embodiment, the lower limit of the driving frequency for generating ultraviolet rays from the discharge tube H is determined by the driving frequency to the ferrite cores F1 and F2, and is preferably driven at a frequency of 20 kHz or more, more preferably 50 kHz or more. It is good to adjust. By doing so, energy can be easily transferred efficiently from the oscillator B (power source) side to the discharge tube H side without enlarging the ferrite cores F1 and F2.

  Furthermore, according to the liquid processing apparatus shown in FIG. 1, the heat generated from the discharge tube H and the ferrite cores F1 and F2 can be radiated through the liquid P to be processed, and thus the discharge tube H and the ferrite core F1. , F2 is kept at an appropriate temperature, and the discharge tube H can be operated without impairing the ultraviolet radiation efficiency.

  In the embodiment shown in FIG. 1 described above, two induction coils are formed by winding one wire W around two ferrite cores F1 and F2, respectively. Two induction coils may be formed by winding the two around the two ferrite cores F1 and F2.

  The ferrite cores F1 and F2 may have any shape such as an annular shape, an elliptical shape, or a rectangular shape, but needless to say, the ferrite cores F1 and F2 need to be arranged so as to be linked to the discharge tube H. Further, since it is known that energy transfer efficiency is improved when the ferrite cores F1 and F2 are brought into close contact with the discharge tube H, it is desirable that the ferrite cores F1 and F2 and the discharge tube H are brought into close contact as much as possible. Further, the ferrite cores F1 and F2 may be divided into a plurality of parts that can be formed in an annular shape. In this way, for example, when assembling the plurality of parts to be linked to the discharge tube H when the discharge tube H is exhausted, the ferrite cores F1 and F2 can be disposed without exposing the discharge tube H to the high temperature during exhaust. it can.

  As mentioned above, although an example of embodiment was demonstrated based on drawing, this invention is not limited to this, It cannot be overemphasized that various embodiment is possible. In the above-described embodiment, the liquid processing apparatus of the type in which the discharge tube H is completely immersed in the liquid to be processed P is shown. However, the present invention is not limited thereto, and for example, the discharge tube H is floated on the liquid surface of the liquid P to be processed. It may be a liquid processing apparatus of a type (in other words, a type in which only part of the discharge tube H is immersed in the liquid P to be processed without being completely immersed). In addition, the discharge tube H that is completely immersed in the liquid P to be processed or is floated on the liquid surface of the liquid P to be processed can be freely or freely left in the liquid or on the liquid surface. You may enable it to move according to the predetermined movement pattern decided beforehand.

  Therefore, next, a liquid processing apparatus of this type will be described with reference to FIG. 2 or FIG. However, in these FIG.2 and FIG.3, illustration of the water conduit X is abbreviate | omitted.

  FIG. 2 is a perspective view showing another embodiment of the liquid processing apparatus according to the present invention. The liquid processing apparatus shown in FIG. 2 is arranged, for example, in a state in which a discharge tube H formed in a ring shape is immersed in the liquid P to be processed or floated on the liquid surface. The tube H is loosely bound with a wire (lead wire) W or the like as shown in FIG. By doing so, the discharge tube H can freely move within a certain range in the liquid P to be processed or on the liquid surface, depending on the flow of the liquid P to be processed. Thus, by allowing the discharge tube H to freely move in the liquid to be processed P or on the liquid surface, it becomes possible to uniformly radiate ultraviolet rays to the liquid to be processed P. Further, even when the liquid level is lowered, the position of the discharge tube H is also changed in accordance with the drop in the liquid level, so that the liquid treatment is efficiently performed at any time regardless of the amount of the liquid P to be treated. be able to.

  In the embodiment shown in FIG. 2, the wire W that is a power supply line to the ferrite core F also serves as a binding wire that restricts the movement of the discharge tube H, and the wire W at least moves the discharge tube H. The movement of the discharge tube H is constrained to such an extent that the breakage of the discharge tube H due to contact with the side wall of the processing tank A is prevented without much hindrance. Of course, it is needless to say that a dedicated wire or the like in which one side is fixed to the wall surface of the processing tank A may be used as the binding wire without the wire W also serving as the binding wire. 2 shows only one discharge tube H connected to the constraining wire. For example, a plurality of discharge tubes H may be connected to the constraining wire, or one discharge may be connected to the constraining wire. A plurality of pipes connected only with the pipe H may be provided.

  FIG. 3 is a perspective view showing still another embodiment of the liquid processing apparatus according to the present invention. In FIG. 3, a discharge tube H or a ferrite core F is connected to a support rod C (moving means) that moves on the guide rail G, and the discharge tube H is in the liquid P to be treated or liquid along the guide rail G. It is configured to be able to move on the surface. The support bar C moves on the guide rail G in accordance with a movement instruction from a control device such as a computer (not shown). In addition to simply moving the discharge tube H along the guide rail G, the discharge tube 1 may be moved up and down by a mechanism for moving the support rod C up and down. In this way, since the discharge tube H can be moved to an appropriate position in the liquid P to be processed or on the liquid surface, the liquid P to be processed can be more uniformly irradiated with ultraviolet rays. In this case, power for generating ultraviolet rays from the discharge tube H may be supplied from the external oscillator B through the guide rail G and the support rod C.

  In the embodiment shown in FIG. 3 described above, the discharge tube H can be moved by the support rod C that moves along a predetermined movement path by the guide rail G, and the liquid P to be treated can be uniformly irradiated with ultraviolet rays. However, the moving means for moving the discharge tube H is not limited to this. Although not shown, for example, a propulsion mechanism such as a screw and a sensor that receives wireless irradiation from the wall surface of the processing tank A are attached to the discharge tube H, and a movement instruction from a control device such as a computer is received wirelessly. Thus, the discharge tube H itself may be configured as an automatic control mechanism that can move autonomously. However, in that case, power is supplied to the discharge tube H by the wire W.

  In the configuration as shown in FIG. 2 or FIG. 3, the discharge tube H (in the liquid P to be processed can be maintained in a balanced state in which the discharge tube H does not float and sink in the liquid P to be processed. The entire buoyancy (including the ferrite core F and the wire W) and their total weight may be adjusted to be substantially the same. That is, they may be configured so that the specific gravity of the entire discharge tube H (including the ferrite core F and the wire W) is the same as the specific gravity of the liquid P to be processed. If it does so, it will have the advantage that the discharge tube H will always float in the same height in the to-be-processed liquid P, and can irradiate the to-be-processed liquid P more effectively.

  Further, when the discharge tube H is arranged in a state of floating on the liquid surface of the liquid to be processed P, the outer peripheral side of a part of the discharge tubes H protruding on the liquid surface not in contact with the liquid to be processed P In addition, for example, an ultraviolet reflecting film made of a member such as aluminum or aluminum oxide powder may be coated (coated). By so doing, only a part of the ultraviolet light generated from the discharge tube H is reflected toward the liquid P to be processed, and only the liquid P to be processed is not emitted from the liquid surface without the liquid P to be processed. Since the ultraviolet rays can be efficiently radiated, the liquid P to be treated can be more effectively irradiated.

  By the way, when the liquid processing apparatus according to the present invention shown in FIGS. 1 to 3 described above is used for sewage treatment or the like, dirt called scale adheres to the discharge tube H as time passes, and the ultraviolet output is increased. It causes a decrease. Therefore, in the apparatus according to the present embodiment, for example, a hair scale-like scale remover for scraping a scale made of resin such as Teflon (registered trademark) or metal such as stainless fine wire on the inner peripheral side of the ferrite core F. Means D are provided (see FIG. 3), and the ferrite core F provided with the scale removing means D is relatively movable along the discharge tube H. Such relative movement of the discharge tube H and the ferrite core F may be performed periodically. In this way, since the scale attached to the discharge tube H is periodically removed by the scale removing means D, the discharge tube H can always be used in a state in which no scale is attached, and thus energy efficiency. From this point of view, there is an advantage that it is possible to provide an apparatus that can always perform more efficient sterilization and purification of the liquid P to be treated.

  Of course, the liquid treatment apparatus according to the present invention can be installed in the wastewater treatment path, and can be sterilized and purified by making direct immersion in the stream. Needless to say, you can.

DESCRIPTION OF SYMBOLS 1 ... Electrodeless ultraviolet radiation discharge tube A ... Processing tank Aa ... Liquid inlet to be processed Ab ... Liquid outlet to be processed B ... Oscillator (stabilizer)
C ... support rod D ... scale removing means F (F1, F2) ... ferrite core G ... guide rail H ... discharge tube J ... support member P ... treated liquid W ... Wire (lead wire)
X ... water conduit

Claims (11)

An electrodeless ultraviolet discharge tube having a curved shape ;
A ferrite core disposed in a manner interlinking with the discharge tube so as to surround a part of the discharge tube;
An induction coil wound around the ferrite core;
A high-frequency power source for supplying a high-frequency current to the induction coil via a lead wire;
At least the ferrite core, the induction coil, and the lead wire are waterproofed, and an ultraviolet ray is generated from the discharge tube by energizing the induction coil in a state where the discharge tube is immersed in a liquid to be treated. A liquid processing apparatus for processing a liquid to be processed with the generated ultraviolet rays ,
The discharge tube has a configuration in which the overall center of gravity is adjusted by an additive including the ferrite core and the induction coil so that the discharge tube is arranged upright, flat, or inclined in the liquid to be treated. A liquid processing apparatus. An electrodeless UV discharge tube;
A ferrite core disposed in a manner interlinking with the discharge tube so as to surround a part of the discharge tube;
An induction coil wound around the ferrite core;
A high-frequency power source for supplying a high-frequency current to the induction coil via a lead wire;
At least the ferrite core, the induction coil, and the lead wire are waterproofed, and an ultraviolet ray is generated from the discharge tube by energizing the induction coil in a state where the discharge tube is immersed in a liquid to be treated. A liquid processing apparatus for processing a liquid to be processed with the generated ultraviolet rays,
The discharge tube is configured to have a total weight including the ferrite core and the induction coil so that the total specific gravity including the ferrite core and the induction coil is the same as the specific gravity of the liquid to be treated. liquid handler tube you being located at a predetermined height to be treated in the liquid. An electrodeless UV discharge tube;
A ferrite core disposed in a manner interlinking with the discharge tube so as to surround a part of the discharge tube;
An induction coil wound around the ferrite core;
A high-frequency power source for supplying a high-frequency current to the induction coil via a lead wire;
At least the ferrite core, the induction coil, and the lead wire are waterproofed, and an ultraviolet ray is generated from the discharge tube by energizing the induction coil in a state where the discharge tube is immersed in a liquid to be treated. In the liquid processing apparatus for processing the liquid to be processed with the generated ultraviolet rays,
The discharge tube liquid handler you further comprising a moving means for moving along a predetermined path of movement or during the treatment liquid on the liquid surface of the processing liquid. Liquid according to any one of claims 1 to 3, characterized in that at least the weight of two different ferrite cores are arranged in the discharge tube to place upright said discharge tube to said treated liquid Processing equipment. Liquid treatment apparatus according to any one of claims 1 to 3, characterized in that the two ferrite cores of at least the same weight was placed on the discharge tube to flat place the discharge tube in the treated liquid . When the discharge tube is arranged so as to float flat on the liquid surface of the liquid to be processed and the discharge tube is floated on the liquid surface of the liquid to be processed, the discharge tube is generated from the discharge tube above the liquid surface to be processed. liquid treatment apparatus according to any one of claims 1 to 3 ultraviolet, characterized by further comprising an ultraviolet reflecting means for reflecting the. The discharge tube, the liquid processing apparatus according to any one of claims 1 to 6, characterized by being formed into a shape closed in a loop. The ferrite core, the liquid processing apparatus according to any one of claims 1 to 7, characterized in that it consists of several parts that can be formed in a loop shape.   The liquid processing apparatus according to claim 1, wherein the high-frequency power source is energized at least at 1 MHz or less and at 20 KHz or more.   The liquid processing apparatus according to claim 1, wherein the high-frequency power source is energized at least at 500 KHz or less and 50 KHz or more. Wherein it is provided a removal unit for removing dirt adhering to the discharge tube on the inner peripheral side of the ferrite core, wherein the pre-Symbol ferrite cores to the removal means with the slide along the said discharge tube 11. The liquid processing apparatus according to claim 1 , wherein dirt attached to the discharge tube is removed.

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