JPH0952093A - Light irradiation device for treating organic matter-containing water and organic matter containing water treatment apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a light irradiation lamp easily separable from a reaction tank and to easily replace the washing and sliding member on the surface of a proctive pipe by connecting one end of the protective pipe of a light irradiation lamp to one end of a reaction tank and supporting and fixing one of them while making the other one of them freely detachable and integrally providing the protective pipe and the sliding member to make the light irradiation lamp easily separable from the reaction tank. SOLUTION: An ultraviolet irradiation lamp 3 having a protective pipe 2a is provided and an annular brush 4 is fitted to the outside thereof and both sides thereof are connected to a guide rod 6 by a brush holder 5. The flange 1a of the reaction tank 1, the flange 3a of the ultraviolet irradiation lamp 3 and the flange 6c of the guide member 6b guiding the guide rod 6 are connected by a bolt 1b. The leading end of the guide rod 6 is connected to the slide 7 connected to the piston rod 8a of an air cylinder 8 in a freely detachable manner. The water to be treated in the reaction tank 1 is circulated and the ultraviolet irradiation lamp 3 is allowed to light to perform treatment but, at this time, an air cylinder 8 is operated to receprocally move the guide rod 6 up and down and the outside surface of the protective pipe 2a is rubbed with the annular brush 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention particularly relates to a decomposition treatment of industrial wastewater containing a so-called organic substance having a high COD or a hardly decomposable organic substance which exceeds a predetermined standard in water quality inspection. Also, the present invention relates to an organic substance-containing water treatment device used when sterilizing general water.

[0002]

2. Description of the Related Art The plating industry, the printed circuit board manufacturing industry, the textile industry, the paper manufacturing industry, which are indispensable with industrial wastewater,
Metal processing industry, semiconductor industry, cleaning industry, printing
At business establishments such as the photographic industry and industrial waste treatment industry, and water and sewage business facilities, if the wastewater is directly discharged to rivers, it pollutes the rivers with harmful substances and worsens the environment, so the wastewater is treated. The amount of organic matter contained in the treated water is represented by chemical oxygen demand (COD) in water quality inspection, and consumption by potassium permanganate required to oxidize polluted organic matter contained in test water. The amount is expressed in ppm) and the like, and when the treated water is released to the outside, the standard is set based on the Pollution Control Law. So-called high COD value wastewater containing organic substances that exceed this standard, or wastewater containing so-called hardly decomposable organic substances that are difficult to be easily decomposed by microorganisms when left alone are conventionally treated with activated carbon adsorption. Methods, hydrogen peroxide addition treatment method, Fenton reagent method, electrolytic oxidation method and the like are known.

[0003]

However, the above-mentioned method using activated carbon is intended to remove the organic matter in the wastewater from the water by adsorbing the organic matter in the wastewater. If it exceeds the adsorption capacity of, the unadsorbed organic matter will remain in the water, and if you try to avoid this, you have to perform a regeneration process to recover the adsorption capacity of the activated carbon and then use the activated carbon again. This is a method that is costly to process and difficult to use, especially in small and medium-sized businesses. Further, the above method is a method of decomposing organic matter by oxidizing it with hydrogen peroxide and converting it into harmless one, but the hydrogen peroxide alone has a weak oxidizing power, and the organic matter of the wastewater of high COD value is There is a problem that not only cannot be efficiently decomposed, but also the decomposition of the hardly decomposable organic substance cannot be sufficiently carried out. Further, the above method uses Fenton's reagent as a reagent for decomposing organic matter, but the time required for the decomposition treatment is long, and the decomposition reaction rate remarkably decreases during the treatment, so that organic matter in wastewater is There is a problem that it cannot be removed to a satisfactory degree. Further, the above electrolytic oxidation method is a method of oxidatively decomposing organic matter in wastewater by utilizing oxygen generated at the anode in electrolysis, but the equipment cost is high, and the oxidative decomposition efficiency is low, resulting in power consumption. However, there is a problem that the running cost becomes high.

Therefore, the present applicant has filed Japanese Patent Application No. 7-2091.
No. 0 specification proposes a method and an apparatus for treating organic matter-containing wastewater, which decomposes organic matter by irradiating light in wastewater containing organic matter to be decomposed, thereby solving the above problems. I showed that I can do it. However, when the light irradiation is performed by an ultraviolet irradiation lamp, the organic matter in the waste liquid and its decomposition products due to the ultraviolet irradiation adhere to the protective tube that protects the light source, and the amount of the adhered material and the adhesive force to the protective tube are not covered. Although there is a considerable difference depending on the type of treatment liquid and the organic matter contained in it, it does not spontaneously desorb and reduces the UV irradiation intensity in wastewater, reducing the decomposition rate and decomposition efficiency of organic matter in wastewater. The problem of doing. This problem occurs even when general water is used as the water to be treated and the sterilization is performed with an ultraviolet irradiation lamp if the treatment time is long.
In order to remove such deposits on the protective tube, conventionally, an ultraviolet irradiation lamp is taken out of a reaction tank containing water to be treated, and the outer surface thereof is treated with a chemical such as an acid solution, an alkaline solution, or hydrogen peroxide solution. One or more of them were rubbed with a sponge or the like, and the surface was rubbed with a cloth to remove deposits. Further, after removing the water to be treated from the reaction tank, one or more of the same chemicals as described above were introduced into the reaction tank and accumulated or circulated to adhere to the protective tube of the ultraviolet irradiation lamp provided in the reaction tank. The deposit was removed. Such a removal method is by chemical etching with a chemical, or is a combination of mechanical rubbing and wiping, and both must be performed as a separate operation by interrupting the treatment of the water to be treated, Not only the treatment efficiency of the water to be treated is poor, but also its removal work is troublesome, which deteriorates the work efficiency.

In order to improve this, Japanese Patent Laid-Open No. 6-508
Japanese Patent Publication No. 295 discloses a device for rubbing the outer surface of a sheath, which should be called a protective tube for protecting an ultraviolet lamp, by the reciprocating motion of an annular brush to remove deposits on the outer surface. The reaction container contains an ultraviolet lamp covered with a sheath, and the reaction container and the sheath are fixed at both ends, so it is not easy to separate them, so if you want to replace the easily worn annular brush, do that work. There is a problem that it is complicated and takes time. Also, the annular brush is provided on the top and bottom, and its diametrically opposite ends are connected by struts,
Since one of the columns is reciprocating, the reciprocating column bears the total weight of these annular brushes, etc., and the load accompanying that operation is too large, which hinders smooth operation and damage. Not only is there a problem that it is easy,
If the device is made horizontal and its reciprocating movement is performed in the lateral direction, the annular brush is deformed by its own weight, its operation is not performed smoothly, and it is easily damaged, which is not suitable for the horizontal type. Although not described in the publication, this problem is more likely to occur when a cantilever type ultraviolet lamp is used because its protective tube is bent. Further, the inner diameter of the reaction vessel is several times as large as the outer shape of the sheath, and the ultraviolet irradiation intensity is likely to be insufficient for the liquid to be treated which is located farther than the sheath introduced into the reaction vessel. There is also a problem that it is not suitable for the treatment because a large amount of the suspension rapidly decreases its intensity as the distance from the light source increases. A first object of the present invention is to provide a protection tube for an ultraviolet lamp, for example, which can be easily separated from a reaction tank to facilitate cleaning of the surface of the protection tube, or a rubbing tool provided integrally with the protection tube. An object of the present invention is to provide an organic substance-containing water treatment light irradiation device and an organic substance-containing water treatment device that can be easily replaced. A second object of the present invention is to provide an organic substance-containing water treatment light irradiation device and an organic substance-containing water treatment device which can be used not only vertically but also horizontally when using a cantilever type light irradiation lamp. is there. A third object of the present invention is to provide a light irradiation device for organic substance-containing water treatment and an organic substance-containing water treatment device that can reduce the load on the drive part that causes the rubbing tool to reciprocate. A fourth object of the present invention is to provide an organic substance-containing water treatment light irradiation device and an organic substance-containing water treatment device capable of efficiently treating a suspension having a high organic substance content by light irradiation. A fifth object of the present invention is to provide a light irradiation device for organic substance-containing water treatment and an organic substance-containing water treatment device that can well stir a liquid to be treated. A sixth object of the present invention is to
An object of the present invention is to provide an organic substance-containing water treatment light irradiation device and an organic substance-containing water treatment device in which a rubbing tool is easily attached. Along with these purposes, removing the deposits adhering to the protective tube of the UV irradiation lamp without interrupting the work of treating the water to be treated with the light irradiation from the UV irradiation lamp, and without using chemicals To remove deposits adhering to the protection tube of the irradiation lamp, to prevent the irradiation efficiency of the ultraviolet irradiation lamp from changing in the water to be treated so that the treatment efficiency does not decrease,
Continuous treatment of high COD wastewater and wastewater containing persistent organic substances, continuous sterilization of general water, high COD
To efficiently decompose organic substances in wastewater and wastewater containing hardly decomposable organic substances, to efficiently sterilize general water, to achieve the intended level of treatment, and to require costly equipment. In addition, there is no running cost, operation is easy and productivity is improved, and it is possible to achieve the objectives of being able to easily adopt even small and medium-sized businesses. To provide a water treatment device.

[0006]

In order to solve the above-mentioned problems, the present invention provides (1) an organic substance having a light irradiation lamp for performing a light irradiation treatment in water containing an organic substance and having a water quality improved, in a reaction tank. In the light irradiation device for the treatment of the contained water,
The light irradiation lamp has a protective tube, the protective tube is provided in the reaction tank so that it can be inserted and removed from one end thereof, and the protective tube and the reaction tank can be connected at the one end, and the protective tube or Provided is an organic substance-containing water treatment light irradiation device in which only one side of the reaction tank is supported and fixed, and the other unsupported side is detachably attached to the one side. The present invention also provides (2) a light irradiation device for water treatment of organic matter-containing water according to (1), wherein the protection tube is integrally provided with a rubbing tool for rubbing the outer surface of the protection tube. The organic substance according to the above (1) or (2), which is an ultraviolet irradiation lamp having a tubular protective tube, wherein the rubbing tool is a reciprocating ring-shaped body that fits into the tubular protective tube and rubs the outer surface thereof. Light irradiation device for containing water treatment,
(4) The annular body is a single ring body or a plurality of spaced ring bodies, and each ring body is fixed to a support rod fixed to at least one fixing ring provided by fitting into a tubular protection tube, and one end of the ring body is fixed. The fixing ring on the side is connected to at least one reciprocally movable guide rod provided in the axial direction of the cylindrical protection tube, and the organic-containing water treatment light irradiation device according to (3) above, (5), the ring. The body is fixed to the support rod by a ring body holding jig having a groove portion for fitting the frame body of the ring body and a groove portion for fitting the support rod and having a fixing means for the support rod (4). (6), the organic substance-containing water treatment light irradiation device according to (4) or (5), wherein the guide rod is connected to a drive mechanism that periodically reciprocates. ), The outer wall of the protective tube and the inside of the reaction tank Width of the gap between is 1.05 to 2.0 in the ratio of the distance from the respective center (1)
At least one of the organic substance-containing water treatment light irradiation device according to any one of (1) to (6), (8), and the fixing ring has an outer peripheral surface outside a half of the gap between the outer wall of the protective tube and the inner wall of the reaction tank. The organic substance-containing water treatment light irradiating device according to any one of the above (4) to (6), which is projected in one direction, (9), the treatment tank, the circulation passage, and the transport pump should be provided at least. Treated water is the above (1) to (8)
To provide an organic substance-containing water treatment device which is circulated in a reaction tank of the organic substance-containing water treatment light irradiation device and which treats organic substance-containing water with a light irradiation lamp of the organic substance-containing water treatment light irradiation device. is there.

In the present invention, "water containing an organic substance to be improved in water quality" means an organic substance to be decomposed, for example, waste water having a high COD value (for example, a standard value determined based on the Pollution Control Law). Or water containing organic substances in waste water containing so-called hardly-decomposable organic substances that are not degradable by microorganisms, or general water that is to be sterilized. It should be noted that although it is also represented by the total organic oxygen content (displayed as TOC and representing the carbon content in the organic matter contained in the test water in ppm unit) as an index showing the organic matter concentration in the wastewater, the same substance In the liquid containing, high COD indicates high TOC, and there is a correlation between them, so high COD
D also means high TOC. Examples of water containing an organic substance include an aqueous solution in which the organic substance is dissolved and a suspension containing the suspended organic substance. Since it is often a transparent or opaque body, its strength tends to decrease as it moves away from the light source, and a device for improving the processing efficiency is required accordingly. Examples of the hardly decomposable organic matter include esters such as butyl acetate, amino acids such as glycine, and the like.
Examples of amines, amides and other nitrogen compounds include E
DTA (used as a complexing agent for ethylenediaminetetraacetic acid and electroless plating solution), diethanolamine, triethanolamine, diethylaniline, melamine, hexamethylenetetramine, morpholine, monoethylaniline, dimethylaniline, diethylaniline, xylidine, Diaminopyridine, n-acetylmorpholine, acrylonitrile, formamide, pyridine, nitrobenzene, etc., ketones such as methyl isobutyl ketone, ethers such as ethyl ether, diethyl ether, ethylene glycol diethyl ether, dioxane, isoamyl ether, etc., alcohols For example, tertiary butyl alcohol, cyclohexanol, diethylene glycol, etc., phenols such as pyrogallol, etc., aromatic carbonization As an element, for example, benzene, toluene, xylene, naphthalene, etc., as a substituted aromatic hydrocarbon, for example, α-methylnaphthalene, as a hydrogenated aromatic hydrocarbon, for example, tetrahydronaphthalene, etc., and as a halogenated hydrocarbon, for example, ethylene dichloride, chloroform, carbon tetrachloride. , Monochlorobenzene and the like, cellulose and substances similar to these, and the like. The organic substances contained in the wastewater also include so-called specified chemical substances specified by the Industrial Safety and Health Law.

In the present invention, the "light irradiation lamp" is preferably an ultraviolet lamp of an ultraviolet irradiation device, and for example, at least one is selected from a high pressure mercury lamp, a low pressure mercury lamp and an ozone lamp. The main wavelength of a high-pressure mercury lamp is 365
nm, a low pressure mercury lamp includes ultraviolet rays having a main wavelength of 254 nm, and an ozone lamp includes a low pressure mercury lamp including a wavelength of 185 nm. These mercury lamps and ozone lamps are preferably provided in the water to be treated and irradiated with ultraviolet rays from the inside in terms of decomposition efficiency and sterilization efficiency of organic substances,
In the method, these may be provided in the water to be treated in the reaction tank, and the water to be treated may be sprayed or flowed down onto these lamp walls in the reaction tank so that the lamp walls are covered with the water to be treated. May be. Further, light irradiation may be performed while circulating the water to be treated. In the present invention, the “reaction tank” means that the water to be treated is introduced, treated and discharged.
Although it is a container that contains the above-mentioned light irradiation lamp, for example, since the light source of an ultraviolet irradiation lamp is provided in a protective tube such as quartz, the smaller the gap between the inner wall of the reaction vessel and the outer wall of the protective tube, the more light Is preferable in that the strength of the above does not decrease. In particular, when the water to be treated is a suspension, it is preferable that it is very close to the surface of the protection tube from the viewpoint of treatment efficiency, and the gap between the inner wall of the reaction vessel and the outer wall of the protection tube is the distance from the center of each. The ratio is preferably 1.05 to 2.0. If it is larger than this, the treatment efficiency of the suspension is not better than this range, and if it is smaller than this range, the difference is smaller than that in this range.

In the present invention, the "rubbing tool for rubbing the outer surface of the protective tube of the light irradiation lamp" means that the light source of the ultraviolet irradiation lamp is provided inside the protective tube of quartz or the like. The tool for mechanically rubbing the outer surface with which the water to be treated comes into contact, is preferably provided so as to be capable of reciprocating, and an annular body fitted to the protective tube is preferable. Examples of the annular body include an annular brush having a bed plate in which fibers such as synthetic resin are planted in an annular shape are attached to the inside of the ring-shaped frame body, similarly sponge, rubber or the like is joined to the inside of the ring-shaped frame body or sponge. , An annular sponge composed only of rubber or the like, a ring body of an annular rubber or the like, the annular brush may be an annular brush,
The fibers may be metal or other linear fibers, and two or more fibers may be used in combination, but it is preferable that the fibers do not damage the surface of the protective tube, and those that do not deteriorate by ultraviolet rays are preferable. As the synthetic fiber, for example, polypropylene fiber is preferable. These ring bodies may be provided not only in a single piece, but in the case of a single piece, it is preferable to reciprocate the entire length of a protection tube of, for example, 100 cm. For that purpose, for example, a guide rod is attached to the ring body, There is a method of moving the guide rod up and down, but it requires a space for moving the tip of the guide rod. On the other hand, in the case of a plurality, the total length of the protection tube may be divided according to the number, and each ring body may be reciprocated within the divided range. Also when moving, the moving distance of the tip can be shortened, the space therefor can be reduced, and since the moving distance of each ring body is also short, wear is small and durability can be provided. Each ring body may reciprocate not only in its own divided area but also in other divided areas. When a plurality of ring bodies are provided, the types thereof may be the same or different, and the intervals thereof may be constant or may be different, which is the most suitable for each place where the degree of contamination of the protective tube is different. Can be provided. The annular body is not limited to a ring body, and may be a spiral one, and the spiral thereof may be a singular piece like the above singular ring body, or may be a plurality of separated pieces like the plurality of ring bodies, and the helix is also a singular piece. It may be multiple articles or multiple articles,
Furthermore, you may cross.

It is preferable that the annular body periodically reciprocates, and a drive mechanism is required for that purpose. For example, a reciprocating mechanism such as a cylinder device or a lever-crank mechanism that performs a piston motion by air pressure or hydraulic pressure is used. However, this may be computer controlled or manually controlled. The reciprocating movement may be only in the axial direction of the protective tube, may be only reciprocating movement in the circumferential direction or only rotating in the circumferential direction, or may be a combination thereof. In this way, the removal efficiency can be enhanced. For rotation in the circumferential direction, a base plate or the like in which fibers are planted in a ring-shaped frame may be rotatably provided via a bearing or the like. The rotation may be natural rotation or forced rotation (rotation by a magnet, etc.). The rotation in the circumferential direction is effective when the annular body has a spiral shape. By disposing a pair of the guide rods on both sides of the protection tube, attaching both ends of each of the ring bodies to these, guiding the guide rods to the outside through the guide portions, and moving the guide rods up and down, each ring body is moved. It can be operated smoothly without deforming, and since the protection tube is in contact with each ring body attached to the pair of guide rods, it is laid sideways and one end side is supported like a cantilever. The other end is a free end, and even if it tries to bend due to its own weight, it is supported by the linder body and its bending is prevented. For example, the ultraviolet lamp can be used in a horizontal type. As described above, the ring body is reciprocated by the guide rod, but if the ring body is directly attached to the guide rod, the load due to the operation concentrates on the guide rod. It is preferable to connect a support rod made of stainless steel or the like and attach each of the ring bodies to the support rod so that the operation of each ring body is not directly transmitted to the guide rod. It is preferable that the fixing rings are provided at least vertically apart from each other, and a single, preferably a plurality of support rods are connected to both of them, and the ring body is detachably attached to this by a jig. Examples of the structure of the jig include a lateral groove into which the frame body of the ring body is fitted and a vertical groove into which the support rod is fitted, which can be fixed to the support rod with screws or the like. By using such a jig, the ring body can be easily attached and detached, the above-mentioned annular brush of the ring body is easily worn, and since it is a consumable item, its replacement is easy. In addition to the upper and lower fixing rings, a single or a plurality of fixing rings may be provided on the support rod by caulking or screwing to prevent the support rod from twisting.

By the moving operation of both the fixed ring and each ring body, it is possible to stir the water to be treated which flows through the gap between the reaction tank and the protective tube, but in order to do this more effectively. When the positions of both ends of the fixed ring are located outside half of the gap, more than half of the water to be treated contained in the reaction tank in the moving range can be directly flowed, so The water to be treated is well agitated, so that the decomposition treatment by light irradiation can be carried out efficiently, and it promotes the detachment of the adhering substances that try to detach from the protective tube. It can be prevented from sticking to the protective tube again by being caught in and taken away. When both ends of the fixing ring are positioned in this way, they can come into contact with the inner wall of the reaction vessel due to the vibration during movement, and the inner wall can function as the fixing ring and also as a guide rod guide.

In the present invention, the organic matter in the water to be treated can be decomposed or sterilized only by irradiation with light, but it is particularly preferable to add hydrogen peroxide to the water to be treated in the waste water. The amount is the original CO to be processed
D, that is, 2.1 to 52.5 g / l is preferable per 1 g / l (liter) of initial COD. At this time, it is preferable to add a divalent iron ion and a monovalent or divalent copper ion together with hydrogen peroxide from the viewpoint of rapidly generating .OH (OH radical). Examples of sources of divalent iron ions include compounds such as ferrous sulfate heptahydrate, ferrous bromide tetrahydrate, and ferrous chloride n-hydrate, and monovalent copper ions. Examples of the source of the above include compounds such as copper bromide, copper chloride, and rhodan salt, and examples of the source of divalent copper ions include compounds such as copper sulfate, but the counter ion thereof remains in water. However, the more harmless, the more preferable. The amount of these metal ions contained in the water to be treated is preferably 2 ppb to 1000 ppm as the divalent iron ion, and 2 ppb to 1000 ppm as the monovalent or divalent copper ion.
Is preferred. Water to be treated may be treated with ozone (O ₃ ) or an ozone-containing gas instead of the redox system which uses hydrogen peroxide and metal ions in combination. Further, oxygen or an oxygen-containing gas may be used as well.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The following examples will be described.

[0014]

【Example】

Example 1 As shown in FIG. 1, an ultraviolet irradiation lamp 3 in which a lamp 2b was protected in a reaction tank 1 by a cylindrical protection tube 2a made of quartz
Is provided, the annular brush 4 is fitted on the outer side thereof, and both sides of the annular brush 4 are connected to the guide rods 6 by the brush holders 5. On the other hand, the flange 1a of the reaction tank 1, the flange 3a to which the ultraviolet irradiation lamp 3 is attached, and the flange 6c of the guide body 6b having the guide portions 6a and 6a having the guide holes for guiding the guide rods 6 and 6 are connected by the bolt 1b. Then, an insertion hole communicating with the guide hole is formed in the flange 3a to which the ultraviolet irradiation lamp 3 is attached. Then, the guide rods 6, 6 are inserted into the insertion holes and the guide holes of the guide portions 6a, 6a, and the ends thereof are detachably connected to the slider 7 by screws 7a, 7a. It is connected to the piston rod 8a of the piston of the cylinder 8. In such a structure, the water to be treated is introduced from the lower side of the reaction tank 1 and discharged from the upper side thereof, and then returned to the original state and continuously circulated, or the discharge is stopped and retained.
The ultraviolet irradiation lamp 3 is turned on and processing is performed. At that time,
The air cylinder 8 is operated to vertically reciprocate the guide rods 6, 6 and the outer surface of the protection tube 2a is rubbed by the annular brush 4 over its entire length. In this way, the ultraviolet irradiation apparatus 9 for treating organic matter-containing water is obtained. The treatment tank is connected to the introduction port and the discharge port of the reaction tank 1 as in Example 4 to be described later, and further the pump is connected. The water to be treated, which is carried out by piping and is introduced into the reaction tank 1 from the lower side, is soaked in the ultraviolet irradiation lamp 3, the annular brush 4, the guide rods 6 and 6 and then discharged from the upper side of the reaction tank 1 to be treated. An organic substance-containing water treatment device is obtained by having a structure in which water is circulated.

In such an ultraviolet ray irradiating device 9 for treating water containing organic substances, a groove formed inside the ring-shaped frame body 4a made of stainless steel as shown in FIG. Using the annular brush 4 obtained by crimping the base plate of the inner winding brush in which polypropylene fibers 4b of 1 to 0.3 mm are planted, a 15 W low-pressure mercury lamp (main wavelength 254 nm) is used as the ultraviolet irradiation lamp 3. High-concentration carvone solder plating cleaning waste liquid is used as the liquid to be treated (the cleaning liquid obtained by removing the solder-plated object from the plating liquid and washing the plating liquid adhering to the surface with water, and having an initial COD value of about 700 ppm. This waste liquid is used for the reaction tank 1 (30 cm in length).
When the number of reciprocating movements of the entire length of the protection tube 2a of the annular brush 4 (cylindrical tube having a diameter of 5 cm and a length of 20 cm) is changed when the protection tube 2a of the annular brush 4 is filled and retained for 6 hours continuously. The transmission intensity, which is the ratio of the intensity of the ultraviolet ray passing through the protective tube after the treatment (indicated by the number of reciprocations per minute) to the initial intensity before the treatment, was measured and was as shown in FIG. From this figure, when the cleaning is performed by operating the annular brush once in 30 minutes (approximately 0.033 times / min), the transmission intensity is 0.6 to 0.7, and the transmittance is 60% or less. It can be seen that the transmission intensity is 0.8 to 0.9, and the transmission rate is 80 to 90% of the initial value in the case of ˜70% once per minute. The final COD value of the liquid to be treated after the treatment was about 28 ppm.

Comparative Example 1 When the same processing as in Example 1 was carried out except that the annular brush 4 was not operated, the transmission intensity was about 0.2 and the transmission rate was about 0.2 as shown in FIG. 20%
You can see that it has decreased to.

Example 2 Treated water was treated in the same manner as in Example 1 except that the annular brush 4 was reciprocated once a minute over the entire length of the protective tube. Example 1 The treated water to be treated again after discharging all the treated water
The same number of times as the above, the same treatment as described above, and the number of times of repeated treatment by changing the water to be treated, that is, the intensity of ultraviolet rays passing through the protective tube after the treatment for the number of treatment batches before the treatment When the transmission intensity, which is the ratio to the intensity of the above, was measured, it was as shown by the solid line (with brushing) in FIG. From this figure, the permeation intensity is about 0.7 or more even when the number of treatment batches is 7 (0.7 or more in consideration of the variation at the time of measurement, and 0.7 to 0.9 or more in consideration of the variation. ), The transmittance is maintained at about 70% or more (70 to 90% or more). Further, when the TOC of the treated water at each of the first, third and seventh treatment batches was measured by the "combustion-infrared analysis method", it was as shown by the solid line (with brushing) in FIG. It was From FIG. 6, there is not much difference compared to the case where the number of processing batches is large and small,
Both of them show that the TOC reduction is good.

COMPARATIVE EXAMPLE 2 The same procedure as in Example 2 was carried out except that the annular brush 4 was not operated. As shown by the dotted line (without brushing) in FIG. It can be seen that the transmittance is almost 0 and the transmittance is reduced to almost 0. In addition, the number of processing batches is the first, 3
When the TOC of the treated water at each treatment was measured in the same manner as above at the 7th and 7th times, it was as shown by the dotted line in FIG. It can be seen from FIG. 6 that the TOC decrease degree decreases as the number of processing batches increases.

Embodiment 3 As shown in FIG. 3, three annular brushes 11a, 11b, 11c similar to the annular brush shown in FIG. 2 are arranged in parallel at intervals of 5 cm to form guide rods 6, 6 shown in FIG. Each was connected and the multiple connection type annular brush 10 was created. FIG.
In the above, when an experiment was performed in the same manner as in Example 1 and Example 2 except that this multiple-connection type annular brush 10 was used, results similar to those obtained in each Example were obtained. . The reciprocating motion of the multi-connection type annular brush 10 may be a reciprocating motion in which each of the annular brushes 11a, 11b, 11c moves in the divided area arranged by dividing the entire length of the protection tube, but other. It is also possible to reciprocate in the area of.

In the structures of the devices of Examples 1 to 3 above, the upper end of the reaction tank 1 is connected by the bolt 1b and the lower end is a free end, and the flange 1a of the reaction tank 1 is supported by a mount (not shown). Since the reaction tank 1 can be fixed, the ultraviolet irradiation lamp 3 and the guide body 6b can be separated by removing the bolt 1b. Then, by removing the guide rods 6, 6 from the slider 7, the protective tube 2a, the guide rods 6, 6 and the annular brush 4
Can be extracted from the reaction tank 1, and the annular brushes 4, 1
It is possible to easily replace 1a to 11c. Also, the surface of the protective tube 2a can be washed by an appropriate means. The annular brush 4 is attached to the brush holder 5 as shown in FIG. 3 or FIG. 12 described later. Further, since the guide body 6b can be supported and fixed to a mount (not shown), the reaction tank 1 can be extracted by removing the bolt 1b, and the annular brushes 4 and 11a to 11c are exposed. It is also possible to clean the protective tube 2a. At this time, if the guide rods 6, 6 are removed from the slider 7 and the annular brushes are pulled out from the protective tube 2a in the same manner as described above, the replacement and cleaning can be facilitated. In the above embodiment, since the guide rods 6 and 6 are inserted through the guide portions 6a and 6a of the guide body 6b, even if the protective tube 2a becomes a cantilever when it is laid sideways, even if the guide rod 6a is bent, The protection tube is supported by the annular plush supported by
The bending can be prevented. As a result, it can also be used as a horizontal type. At that time, since both ends of the annular brush are supported, the annular brush is prevented from being deformed and can smoothly reciprocate. Also,
Since both ends of the brush holder 5 and the guide rods 6 and 6 are located outside the half of the gap between the inner wall of the reaction vessel 1 and the outer wall of the protective tube 2a, the movement of the annular brushes 4 and 11a. It is possible to stir the water to be treated which flows through the gap together with 11c.

Embodiment 4 As shown in FIGS. 8 and 9, a reaction vessel 41 is supported and fixed to a frame 40 by a bracket 40a. Reference numeral 43 is an ultraviolet irradiation lamp that protects the lamp 42b by a cylindrical protection tube 42a made of quartz and has a flange 43a at its joint.
An insole plate 43b is fitted into the protective tube 42a through its opening, the flange 43a and the insole plate 43b are brought into contact with each other, and in this state, the protective tube 42a is inserted into the reaction tank 41 from its upper end opening. Then, the insole plate 43b is brought into contact with the flange 41a of the reaction tank 41 to support the ultraviolet irradiation lamp 43. Reference numeral 46b denotes a guide body, and the guide body has a pair of cylindrical bodies standing on both sides of the disc body and each of which has a guide hole that penetrates the disc body.
6a, 46a, an opening is formed in the center of the disc body, and a flat recess communicating with the opening is formed in the center of the lower surface of the disc body. Into the opening, a connecting portion of the protrusion on the base end side of the lamp 42b with the power source is inserted, and the flange 43a is housed in the flat concave portion, and the insole plate 43b
The guide body 46b is supported by abutting a flange 46c projecting on the peripheral side of the disk body, and the flange 46c, the insole plate 43b, and the flange 41a are detachably connected by a bolt 41b.

A pair of guide rods 46, 46 are inserted into the guide portions 46a, 46a, and the guide rods are inserted into the through holes provided corresponding to the flange 43a and the insole plate 43b, and the lower end thereof is made of stainless steel. The upper fixing ring 44a made of steel is connected as shown in FIG. That is, a threaded portion is provided at the distal end portion, a large diameter portion is provided at the proximal end portion, and the intermediate portion of the hook 46d formed in a cross-section with both ends of a rectangle formed into an arc is attached to the upper fixing ring 44a. Insert into the formed through-hole with a movable allowance, fix the guide rod 46 to the base end by screwing, and screw the nut to the tip, thereby stopping the rotation of the gund rod 46. In addition, the guide rods 46, 46 and the upper fixing ring 44a are connected to each other with an allowance for vertical movement by the middle portion of the hook 46d. The guide rod 4 is attached to the upper fixing ring 44a.
As shown in FIG.
2 is provided with a through hole conforming to the upper end cross-sectional shape of the stainless steel support rod 45a, the upper end of this support rod is inserted into the through hole as shown in FIG. 11, and the nut formed on the upper end of the through hole is not shown. Are fixed by screwing, and the support rods 45a, 45a are supported by the first fixing ring 44a as shown in FIG. The same applies to the other two support rods. As shown in FIG. 8, these four support rods 45a, 45a ...
4b is fixed in the same manner as in the case of the upper fixing ring 44a, and the intermediate fixing ring 44c is fixed to the position 1/4 above the lower fixing ring by caulking (may be screwed), and each strut rod is fixed. Avoid twisting during operation. At this time, the reaction tank 41 has a length of 1200 mm and an inner diameter of 1
21 mm, the outer diameter of the protective tube 42a is 72 mm, the gap between the inner wall of the reaction vessel 41 and the outer wall of the protective tube 42a is 25 mm, and the positions of both ends of the fixing rings 44a to 44c are located outside half of the gap.

The support rods 45a, 45a ...
As shown in FIG. 12, a jig 45e as a brush holder having horizontal grooves 45b and vertical grooves 45c in the directions orthogonal to each other in the horizontal direction and the vertical direction, and screw holes 45d on both sides of the vertical grooves in parallel with the horizontal grooves is provided. The vertical groove 45c is fitted, and the hexagonal screw 45f is screwed into the screw holes 45d on both sides of the vertical groove to be fixed through the screw holes of the support rod 45a. Then, as shown in FIG. 11, the other columns 45a ...
Similarly, a jig 45e is attached, and as shown in FIGS. 11 and 12, an annular brush 45 similar to that shown in FIG.
Install by press-fitting into. In this way, the annular brush 4
5 is attached to the four columns 45a, 45a, ... By a jig 45e, but is slightly spaced from the upper fixing ring 44a, the lower fixing ring 44b, and the intermediate fixing ring 44c, and is attached at a total of eight equal intervals.

At the upper ends of the guide rods 46, 46,
As shown in FIG. 9, the connecting pieces 47a, 47a are fixed by screws. On the other hand, in the center of the elongated plate body, the lamp 42
A slider 47 having a circular hole into which the power source connecting portion on the base end side of b is freely inserted is provided, and the connecting piece is screwed to the slider 47.
It is detachably connected by b and 47b. Slider 47
At both ends of the guide shafts 50, 50 are nuts 50a, 5
0a is detachably connected, and the respective guide shafts 50, 50 are movably inserted in guide cylinders 50b, 50b fixed to a bracket 40a fixed to the frame 40. A connecting rod 48b connected to a Biston rod 48a of an air cylinder 48 is detachably connected to the slider 47 by a nut 48c. In this way, the ultraviolet irradiation device 49 for treating organic matter-containing water is obtained. As shown in FIG. 8, the treatment tank 51 is connected to the inlet and the outlet of the reaction tank 41, and the pump 52 is further connected.
Are connected by a pipe 53, and the reaction tank 4
The water to be treated introduced from the bottom to the ultraviolet irradiation lamp 4
3, the fixing rings 44a to 44c, the annular brush 45, the guide rods 46, 46 are soaked, then discharged from the upper side of the reaction tank 1, and the water to be treated is circulated so that the organic substance-containing water treatment device is can get.

With this structure, when treating the water to be treated, the driving force is transmitted from the piston rod 48a to the slider 47 through the connecting rod 48b by the driving of the air cylinder 48, whereby the slider 47 moves up and down. However, at that time, the lateral movement of the slider is prevented by being guided by the guide shafts 49, 49, so that the slider can be smoothly moved vertically. As a result, the guide rods 46, 46 also smoothly move up and down linearly, and the upper fixing ring 44a supported by the guide rod also moves up and down, so that the support rods 45a, 45a supported by the upper fixing ring 44a. · Annular brush 45 attached to
... also moves up and down, and each annular brush has a protective tube 42.
It is possible to reciprocate about 1/4 of the entire length of a, scrape the tube wall, and scrape off the deposits. At this time, each fixing ring 44
Since both ends of a to 44c are located outside the half of the gap between the inner wall of the reaction tank 41 and the outer wall of the protection tube 42a, the water to be treated can be stirred well. Since the annular brush 45 is a consumable item, when it wears, the connecting pieces 47a, 47a are removed from the slider 47, and then the slider 47 is attached to the guide shafts 49, 4 as shown in FIG.
9, removed from the connecting rod 48b, the insole plate 43b, the ultraviolet irradiation lamp 43 and the guide body 46b the guide rod 4
By lifting together with 6, 46, the entire annular brushes 45, 45, ... Can be extracted from the reaction tank 41. As a result, the jig 45e can be removed by removing the screw, and the used annular brush 45 can be extracted to create a new annular brush. Can be replaced with a brush.

Embodiment 5 As shown in FIG. 13, the vertical apparatus of the above-mentioned Embodiment 4 is laid down horizontally so that the processing tank 51 is changed and the processing tank 54 is changed.
Then, the horizontal organic matter-containing water treatment device is obtained by changing the position of the supporting leg.

The apparatus of Examples 4 and 5 can treat the water to be treated as well as the apparatuses of Examples 1 to 3. Further, the same effects as those described above in these embodiments can be obtained, but there are the following effects in addition to the above.
That is, since the annular brush is not directly attached to the guide rods 46, 46 but the annular brush is attached via the upper fixing ring 44a, the load accompanying the operation of the annular brush suspended on the upper fixing ring 44a is directly transmitted to the guide rod. Without receiving the load, the upper fixing ring 44a first transfers the load to the guide rod. Therefore, it is possible to prevent the guide rod from being excessively loaded due to play in the connecting portion between the guide rod and the upper fixing ring 44a. it can. Further, since the annular brush is attached by the jig 45e, it is easy to attach the annular brush to the support rod of the jig and the annular brush to the jig. The workability of brush replacement can be improved, and the operation rate of the water treatment device can be improved.

Embodiment 6 As shown in FIG. 7, the liquid to be treated of the organic substance-containing wastewater to be treated is stored in the storage tank 21. The switch of the control unit 22 is operated to open the valve 23, and this treated water is sent to the treatment tank 24. When the amount of water to be treated reaches a predetermined amount, the detection unit 25 detects it and operates the control unit 22, closes the valve 23, and conveys the pump 26.
Is operated and the valve 27 is opened, and the water to be treated is sent to the reaction tank 1 of the ultraviolet irradiation device 9 for treating organic matter-containing water shown in FIG. The treated water is introduced from the lower side of the reaction tank 1 and discharged from the upper side, and the discharged treated water is returned to the treatment tank 24 through the pipe 30. The detection unit 25 detects this and operates the control unit 22 to turn on the ultraviolet lamp 3. Thus, the treatment is carried out by irradiating ultraviolet rays from the ultraviolet lamp 3 provided in the center of the tank while circulating the water to be treated in the reaction tank 1. In this state, the COD value of the treated water in the treatment tank 24 is detected by the detection unit 25, and when the detected value reaches a predetermined value, the control unit 22 causes the transfer pump 2 to operate.
6 is stopped, and the valve 27 is closed to stop the above circulation, the ultraviolet lamp 3 is turned off, and the valve 3 of the outlet 31 is stopped.
2 is operated to take out the treated water. The completion of this removal is detected by the detection unit 25, and the control unit 22 is operated based on it to close the valve 32 and open the valve 23, and the water to be treated in the storage tank 21 is transferred to the reaction tank 24 in the same manner as above. The control unit 22 closes the valve 23 and operates the transfer pump 26 and the valve 27 to perform the same process as above. The detection unit can detect the level of the water to be treated in the reaction tank 24 by setting a rod-shaped body on a floating body and detecting the upper end of the rod-shaped body by an optical sensor. You may make it switch-operate a control part. Further, the COD value may be obtained by analysis by a worker at any time, and the control unit may be operated based on the analyzed value. An organic substance-containing water treatment ultraviolet ray irradiation device 49 may be used in place of the organic substance-containing water treatment ultraviolet ray irradiation device 9 to perform the same treatment.

With the apparatus of each of the above-mentioned embodiments, when hydrogen peroxide and divalent iron ions and monovalent or divalent copper ions are used together in the wastewater of the water to be treated, ozone is not used when the ions are not used together. In the presence of oxygen, particularly in the presence of oxygen, light irradiation can be continuously performed, whereby wastewater having a high COD or wastewater containing a hardly decomposable organic substance can be continuously and efficiently treated, and the intensity of light changes. Since there is no such thing, its decomposition efficiency is good regardless of the concentration of the organic matter to be decomposed, it is possible to achieve the purpose of a predetermined level of treatment, and there is no need for costly equipment, and there is no running cost. It is possible to provide a method for treating organic matter-containing wastewater that is easy to operate and has good productivity. In addition, in the invention of (9) above, a configuration of “sending a certain amount of water to be treated from the storage tank to the treatment tank and then stopping the water supply to circulate the water to be treated between the treatment tank and the reaction tank” May be added, and any of them may be the “organic substance-containing water treatment method”.

[0030]

According to the present invention, one end of a reaction vessel and, for example, an ultraviolet lamp can be connected freely, and only one of the connecting portions is supported and fixed. Therefore, the ultraviolet lamp can be easily separated from the reaction vessel. It facilitates cleaning of the surface of the protective tube,
Alternatively, the rubbing tool provided integrally with the protective tube can be easily replaced. If a ring-shaped body supported by a pair of guide rods is used as the rubbing tool, the ring-shaped body can support the protection tube so as not to bend, so that the ultraviolet lamp can be used not only as a vertical type but also as a horizontal type. It is possible to smoothly operate the annular body. In addition, a fixed ring is provided on the driven guide rod, and an annular body of the rubbing tool is provided on the fixed ring, so that the load on the guide rod can be reduced. Further, by limiting the gap between the reaction tank and the protective tube, a suspension having a high organic content can be efficiently treated by light irradiation, and both ends of the fixing ring are positioned outside half of the gap. As a result, the liquid to be treated can be well stirred and can be promoted when scraping off the deposit on the protective tube with the rubbing tool. Further, by using the jig, it is possible to easily attach the rubbing tool. In this way, by providing a rubbing tool for rubbing the protection tube of the light irradiation lamp, it is possible to protect the UV irradiation lamp without interrupting the work of treating the water to be treated with light irradiation by the UV irradiation lamp, for example. It is possible to remove deposits adhering to the tube and remove deposits adhering to the protective tube of the UV irradiation lamp without using chemicals, so the removal work is simple and the productivity is high. Good, the irradiation intensity of the ultraviolet irradiation lamp in the water to be treated is not changed so that the treatment efficiency is not lowered, and the work efficiency can be improved. In addition, since it is possible to provide a treatment device that can treat water to be treated while circulating it by using a light irradiation device provided with a rubbing tool for rubbing the protection tube of the light irradiation lamp, wastewater with high COD and hardly decomposable organic matter can be provided. Can be continuously treated wastewater containing water, can continuously sterilize general water, can efficiently decompose the organic matter, can efficiently perform general water sterilization, the predetermined specified in the drainage standards. Achieve the level of processing purpose. Further, it is possible to provide an organic substance-containing water treatment device which does not require high-cost equipment, requires no running cost, is easy to operate, and has good productivity.
It can be easily adopted by small and medium-sized business establishments.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional explanatory view of an ultraviolet irradiation device of an embodiment of an organic substance-containing water treatment light irradiation device of the present invention.

FIG. 2 is a perspective view of the rubbing tool.

FIG. 3 is a perspective view of a rubbing tool of another embodiment.

FIG. 4 is a graph in which the UV transmission intensity of the protection tube of the UV irradiation lamp of FIG. 1 is examined by changing the frequency of use of the rubbing tool.

FIG. 5 is a graph showing changes in the ultraviolet transmission intensity of the protective tube of the ultraviolet irradiation lamp depending on the number of repetitions of treating the water to be treated with or without the use frequency of the rubbing tool being constant.

FIG. 6 is a graph showing changes in the TOC of the water to be treated when the number of repetitions is increased.

FIG. 7 is a schematic explanatory view of an embodiment of the organic substance-containing water treatment device of the present invention.

FIG. 8 is a front explanatory view of a partial cross section of an organic substance-containing water treatment light irradiation device and an organic substance-containing water treatment device according to another embodiment of the present invention.

FIG. 9 is an enlarged sectional view of a part thereof.

FIG. 10 is an explanatory diagram at the time of its disassembly.

FIG. 11 is an enlarged perspective view of a part thereof.

FIG. 12 is a perspective explanatory view of a part thereof.

FIG. 13 is a front explanatory view of a partial cross section of an organic substance-containing water treatment light irradiation device and an organic substance-containing water treatment device according to still another embodiment of the present invention.

[Explanation of symbols]

 1, 41 Reaction tank 2a, 42a Protective tube 3, 43 Ultraviolet irradiation lamp 44a-44c Fixing ring 45a Support rod 4, 45 Ring brush 6, 46 Guide rod 8, 48 Air cylinder 9, 49 Ultraviolet irradiation device 11 Multiple connection type annular Brush 24,51 Treatment tank 26,52 Pump 30,53 Piping

Claims (9)

[Claims] 1. An organic substance-containing water treatment light irradiating apparatus having a reaction tank equipped with a light irradiating lamp for light irradiating in water containing organic matter to be improved in water quality, wherein the light irradiating lamp has a protective tube. The protective tube is detachably provided in the reaction tank from one end thereof, the protective tube and the reaction tank can be connected at the one end, and only one side of the protective tube or the reaction tank is provided. An organic matter-containing water treatment light irradiating device, which is supported and fixed, and the other unsupported side is detachably attached to the one side. 2. The light irradiation device for water treatment of organic matter-containing water according to claim 1, wherein the protection tube is integrally provided with a rubbing tool for rubbing the outer surface thereof. 3. The light irradiation lamp is an ultraviolet irradiation lamp having a tubular protection tube, and the rubbing tool is a reciprocating ring-shaped body fitted into the tubular protection tube and rubbing the outer surface thereof. Item 3. The light irradiation device for water treatment containing organic matter according to Item 1 or 2. 4. The annular body is a single ring or a plurality of ring bodies that are separated from each other, and each ring body is fixed to a support rod fixed to at least one fixing ring that is provided so as to be fitted into the tubular protective tube, and The light irradiation device for organic-substance-containing water treatment according to claim 3, wherein the fixing ring on the one end side is connected to at least one reciprocally movable guide rod provided in the axial direction of the tubular protection tube. 5. A jig for holding a ring body having a groove portion for fitting a frame body of the ring body and a groove portion for fitting the pillar rod and fixing means for fixing the ring rod to the pillar rod. The light irradiation device for water treatment containing organic matter according to claim 4, which is performed by. 6. The light irradiation device for treating organic matter-containing water according to claim 4, wherein the guide rod is connected to a drive mechanism that reciprocates periodically. 7. The gap between the outer wall of the protective tube and the inner wall of the reaction vessel is 1.05 to 2.
The light irradiation device for water treatment of organic matter-containing water according to any one of claims 1 to 6, which is 0. 8. The fixing ring according to claim 4, wherein an outer peripheral surface of at least one of the fixing rings is positioned so as to project outward from a half of a gap between an outer wall of the protection tube and an inner wall of the reaction vessel. Irradiation device for water treatment of organic matter-containing water. 9. The reaction tank of the organic substance-containing water treatment light irradiation apparatus according to claim 1, wherein the water to be treated to be treated has at least a treatment tank, a circulation passage, and a transfer pump. The organic substance-containing water treatment device which is circulated in the above step and treats the organic substance-containing water with a light irradiation lamp of the organic substance-containing water treatment light irradiation device.