JP4959179B2 - Deodorizing and antifouling cleaning method for circulation cleaning type men's toilet and circulation cleaning type men's toilet used in the method - Google Patents

Description

  The present invention relates to a deodorizing and antifouling cleaning method for a circulation washing type male toilet used for a moving body such as a train vehicle, a bus, an aircraft, and a ship, and a circulation washing type male toilet used in the method.

Conventionally, in a circulation wash type male toilet installed on a moving body such as a train, a urinal is washed by flowing a predetermined amount of wash water stored in a wash water tank from the top of the urinal after the user urinates. The wash water discharged from the lower part of the urinal is collected and stored in the wash water tank again, and is used for washing the urinal while circulating the wash water for a predetermined period each time the user urinates. ing. Circulating wash water is circulated for a certain number of times and then discarded and replaced with clean wash water so that spoilage bacteria do not grow in the wash water.
However, these men's toilets are unlikely to cause bad odors when they are in continuous operation, but when installed on trains, the trains will be in the garage when the daily operation ends. Since the urine component mixed in the wash water stored in the tank during this stop is used as a nutrient, the growth of spoilage bacteria occurs actively, and foul odor is generated and dirt adheres due to the generation of suspended matter. Was likely to be the cause of this.

For this reason, as a measure to solve the problems of the men's toilet with such a circulation washing type, a sensor for detecting the presence / absence of a urinal user, a switching valve installed to communicate with the lower part of the urinal, and switching The sewage pipe communicated with the urinal through the switching valve in the selected state to one of the valves, the filth tank installed at the other end of the sewage pipe, and the switching valve in the selected state to the other of the switching valves The used wash water pipe communicated with the urinal, the treatment tank installed at the other end of the used wash water pipe to remove urine from the used wash water, and the treated water treated in the treatment tank into the urinal An improved technique such as a urinal washing water regenerator provided with a pump to be introduced and a switching valve, a sensor, and a control unit connected to the pump has been proposed (see, for example, Patent Document 1 and Patent Document 2). . In the apparatus shown in Patent Document 1 or Patent Document 2, the detection sensor and the switching valve are interlocked so that urine when the user urinates and wash water that flows only a small amount from the upper part of the urinal as pre-cleaning are treated. Instead of flowing into the tank, store it in the waste tank installed separately, then switch the switching valve to the treatment tank side, and wash the urinal by flowing a predetermined amount of wash water from the top of the urinal as the main wash. After the cleaning water is returned to the treatment tank, the cleaning water is stored, and every time the user pisses, the cleaning water is repeatedly used for a predetermined period, and the total amount is used once every 20 times. By exchanging with clean wash water, the urinal is washed with a small amount of wash water, and it is devised so that the wash water used for circulation does not easily decay.
However, in the apparatuses as shown in Patent Document 1 and Patent Document 2, the circulating wash water stored in the tank surely reduces the amount of urine components that become nutrients for spoilage bacteria. However, the organic matter attached to the surface of the urinal is mixed into the washing water by repeating the circulation of the washing water, and such organic matter adheres to the wall surface in the circulating washing water tank. Even if the circulating wash water is replaced with clean wash water, organic matter may remain, and if the residue accumulates to some extent, there is a risk that spoilage bacteria may grow as a nutrient source .

In addition, antibacterial and deodorant treatment agents are used to prevent the rinsing of the washing water tank in the circulating washing toilet. Since antibacterial and deodorant treatment agents are required to have a stable anti-corrosion effect in a small amount, halogens such as 2-bromo-2-nitropropane-1,3-diol as the main antibacterial component (see, for example, Patent Document 3) ) And isothiazoline-based compounds such as 5-chloro-2-methyl-4-isothiazolin-3-one (see, for example, Patent Document 4) and the like, which can stably exhibit a very high antibacterial performance in a small amount. Is common. In addition, antibacterial and deodorant treatment agents that use quaternary ammonium salts such as benzalkonium chloride as antibacterial components, which are also used for skin disinfection, etc. in consideration of safety to the human body and treatment facilities. Has also been developed.
However, in order to suppress the growth of spoilage bacteria, it is extremely effective to add an antibacterial and deodorant treatment agent to washing water, but antibacterial and deodorant containing conventionally used antibacterial components such as halogens and isothiazolines In the case of using a treatment agent, a very strong antibacterial activity can be expected with a small amount of dripping, but on the other hand, it requires great care in handling because it is highly irritating to the skin and mucous membranes. In recent years when safety is the highest priority and importance is placed on the safety of maintenance workers and toilet users, the use of antibacterial deodorizing treatment agents that are strongly concerned about the human body tends to be avoided. In addition, halogen-based and isothiazoline-based compounds that are antibacterial components are structurally extremely stable and difficult to be naturally decomposed. Antibacterial and deodorant treatment agents containing such antibacterial components are decomposed when discharged even when added in a small amount. There was a possibility that the wastewater treatment facility such as an activated sludge tank would be adversely affected. In addition, antibacterial and deodorant treatments that use quaternary ammonium salts as antibacterial components show a phenomenon in which the antibacterial activity decreases rapidly when they react with organic substances such as urine in the washing water tank, and the amount of dripping mixed in is somewhat high. There was a problem that the effect could not be stably maintained unless it was. Quaternary ammonium salts are highly reactive, and if mixed in drops at a certain high concentration, there is a risk of corroding metals and other components, and the foaming property is very high, so the water quality will be contaminated when discharged. There is a concern that In addition, when it is dropped and mixed at a high concentration, a large amount of chemical solution is required, and the contribution to weight reduction in the circulation washing type male toilet becomes meaningless.

In the men's toilet, a chemical cylinder filled with a solid deodorant and antifouling agent is installed in the urinal, and the cleaning deodorant and antifouling agent is put into the cleaning water by passing the cleaning water through the chemical cylinder during cleaning. A method for preventing bad odor and preventing adhesion of dirt by dissolving them one by one is widely used in general. Many solid deodorant antifouling agents are a combination of bactericides and fragrances. In particular, sulphamic acid and dichloromethane are used as active ingredients for the purpose of degrading soil such as urine and suppressing the generation of malodor such as ammonia. Those containing dangerous acidic substances such as isocyanuric acid (see, for example, Patent Document 5) are generally used. In addition to this, many solid deodorizing and antifouling agents containing microorganisms effective in decomposing malodors and dirt are also provided.
However, when using a deodorizing and antifouling agent containing a bactericidal agent in the circulating cleaning method, the cleaning water is in an environment in which the spoilage of bacteria is likely to propagate in the circulating cleaning method. In order to dissolve the deodorizing and antifouling agent containing the bactericide in a solid state little by little, it is conceivable to use a water-soluble bactericidal agent. However, although a deodorizing and antifouling agent containing a water-soluble disinfectant can obtain a certain effect at the beginning of replenishment, it cannot be expected to maintain its effect because it dissolves in washing water in a short time. Therefore, when trying to maintain a certain effect by using a deodorizing and antifouling agent containing a water-soluble disinfectant, prepare a fairly large solid deodorizing and antifouling agent or frequently add a new deodorizing agent to the medicine cylinder. Since it was necessary to replenish the solid deodorant antifouling agent, it was not practical. In addition, when using a deodorizing and antifouling agent containing microorganisms in a circulating cleaning system, if the spoilage bacteria have already grown in the washing water tank, the microorganisms contained in the deodorizing and fouling agent are It was not possible for the microorganisms to grow in the wash water because it was not superior. In addition, when an antibacterial agent is combined with a deodorizing and antifouling agent containing microorganisms to suppress the growth of spoilage bacteria, it becomes possible for the microorganisms to preferentially grow in the wash water. There is a very high possibility that the microorganisms contained therein are inhibited from growing by the antibacterial agent, and the effect of the deodorizing and antifouling agent cannot be obtained.
JP-A-7-216958 (Claim 1, FIG. 1) JP-A-8-319656 (Claim 1, FIG. 1) JP 2001-233703 A (Claim 3) JP 7-69816 A (Claim 2) JP 2001-172682 A (Claim 2)

  In conventional circulation washing type men's toilets, the technology mentioned above is used alone or in combination to provide technology that does not cause odor generation and dirt adhesion with a small amount of washing water. It was used in many men's toilets. However, a method of performing the above technique alone does not provide a sufficient effect, and even when a plurality of the above techniques are combined and an attempt is made to enhance the effect, problems that are incompatible with each other occur. Although a good effect was recognized at the beginning, the generation of malodor and dirt became prominent with long-term use. Therefore, recently, it has become common for men's toilets installed on trains to employ a system that uses flush water in a transient manner. However, as the need for vehicle weight reduction for high-speed train operation increases, the temporary adoption that must be equipped with a large amount of washing water goes against the times. Development of toilets is expected.

  An object of the present invention is to provide a deodorizing and antifouling cleaning method for a circulation washing type men's toilet capable of preventing the generation of malodor caused by the decay of circulating washing water and the contamination of toilets and the like due to the outflow of floating substances, and the method. The purpose is to provide a men's toilet with circulation cleaning.

According to the first aspect of the present invention, after storing the urine discharged from the lower part of the urinal after the user urinates in the filth tank, a predetermined amount of the washing water stored in the washing water tank from the upper part of the urinal is collected by the circulation pump . Wash the urinal by flushing, collect the wash water discharged from the lower part of the urinal, store it in the wash water tank again, and circulate the wash water for a predetermined period each time the user urinates It is an improvement of the deodorizing and antifouling cleaning method for the circulation cleaning male urinal used for cleaning the urinal. Its characteristic configuration is that a urinal is provided with a sensor for detecting the presence or absence of a user, a slow-dissolving solid deodorant containing microorganisms is provided in a conduit through which wash water circulates, and an antibacterial deodorant treatment solution is used as a chemical solution. A metering pump is provided to store the antibacterial deodorizing agent aqueous solution stored in the tank and drop into the pipeline through which the washing water circulates, and the sensor sensor detects the absence of the user after urination. The circulation pump and the metering pump are operated in conjunction with each other, and the antibacterial deodorizing agent is circulated in the wash water by the metering pump in a range of 100 to 5000 ppm , and the microorganism is added to the wash water by the circulation pump. A slow-dissolving solid deodorant containing water is brought into contact with each other so that the slow- dissolving solid deodorant is gradually dissolved in washing water .
In the invention which concerns on Claim 1, after storing the urine discharged | emitted after a user urinates in a filth tank, before supplying the wash water stored in the wash water tank from the upper part of a urinal, it is antibacterial to wash water. By adding dropwise the deodorant treatment agent at a predetermined ratio and dissolving the slow-dissolving solid deodorant containing microorganisms in the wash water little by little, the growth of spoilage bacteria in the wash water is suppressed by the effect of the antibacterial deodorant treatment agent. In order to create an environment in which spoilage bacteria are difficult to grow even when the effects of antibacterial and deodorant treatments are reduced by dominant growth of microorganisms, urinal contamination due to the generation of malodors and the generation of suspended matter Adhesion can be extremely strongly prevented. In this case, the effect is continued if the circulating wash water is replaced with clean wash water several times a day, but the entire amount is replaced with clean wash water at a rate of about once every 20-40 times. The effect can be maintained higher. That is, it is possible to suppress the frequency of changing the total amount of cleaning water.

The invention according to claim 2 is the invention according to claim 1, wherein the antibacterial and deodorizing treatment agent comprises an aqueous solution containing a biguanide antibacterial component and a surface active component, and the antibacterial component is polyhexamethylene biguanide hydrochloride (hereinafter referred to as PHMB). called.) viewed contains as a main component, a solid composition gradually soluble solid deodorant is formulated of stearyl alcohol as a dissolution control agent in polyethylene glycol solid at room temperature, as a blending an active ingredient, a microorganism Bacillus subtilis ( Bacillus subtilis) and an organic acid .

As shown in FIG. 1, the invention according to claim 3 is a urinal 11 provided with a sensor 11a for detecting the presence / absence of the user, and the urinal 11 is discharged from the lower part of the urinal 11 after the user urinates. The urinal storage unit 12 for storing the urine and the circulation pump 26 are provided, and the urinal 11 is washed by flowing a predetermined amount of the washing water stored in the washing water tank from the upper part of the urinal 11 by the circulation pump 26. 11 Washing water discharged from the lower part is collected and stored in the washing water tank again, and the washing water circulation is performed to wash the urinal 11 while circulating the washing water for a predetermined period each time the user pisses. Slowly soluble so that the wash water supplied to the urinal by the means 13 and the wash water circulation means 13 is passed through a drug cylinder holding a slowly soluble solid deodorant on the inner wall to gradually dissolve the slowly soluble solid deodorant in the wash water. a solid deodorant supply means 14, Has a volume pump 28, an antibacterial treatment agent supplying means 16 for dropping mixed antibacterial treatment aqueous solution in a predetermined ratio with washing water circulation unit 13 by a metering pump 28 to the washing water supplied to the urinal, clean wash e Bei the cleaning water supply means 15 for supplying water to the wash water tank, the output of the sensing sensor 11a which senses the absence of a user after urine, is operated in conjunction with a circulation pump 26 and the metering pump 28 The antibacterial deodorant treatment agent is circulated in the wash water by the metering pump 28 in a range of 100 to 5000 ppm with respect to the wash water amount, and the slow-dissolving solid deodorant is brought into contact with the wash water by the circulation pump 26. It is a circulation washing type men's toilet characterized in that a soluble solid deodorant is gradually dissolved in washing water .
In the invention which concerns on Claim 3 , after storing the urine discharged | emitted after a user urinates by a filth storage means, before supplying wash water from an upper part of a urinal by a wash water circulation means, an antibacterial deodorant treatment agent supply means As a result, the antibacterial deodorant treatment agent is dripped and mixed into the washing water at a predetermined ratio, and the slowly dissolving solid deodorant containing microorganisms is gradually dissolved in the washing water by the slowly dissolving solid deodorant supplying means. In order to suppress the growth of bacteria by the effect of antibacterial deodorant treatment agent and to proliferate microorganisms dominantly, even when the effect of the antibacterial deodorant treatment agent is reduced, it creates an environment in which spoilage bacteria are difficult to grow. It is possible to prevent urinal contamination due to generation and generation of suspended matter extremely strongly.

The invention according to claim 4, an invention according to claim 3, antibacterial treatment agent is an aqueous solution containing a biguanide antimicrobial component and a surfactant component, an antibacterial component seen contains as a main component PHMB, gradually soluble A toilet in which microbial Bacillus subtilis and an organic acid are blended as active ingredients in a solid composition in which stearyl alcohol is blended as a dissolution regulator in polyethylene glycol which is solid at room temperature .

The deodorizing and antifouling cleaning method for the male toilet of the circulation cleaning type of the present invention stores the urine discharged after the user urinates in the filth tank, and then the wash water stored in the wash water tank from the upper part of the urinal Before supplying, add antibacterial and deodorant treatment agent to the washing water in a predetermined ratio and dissolve the slow-dissolving solid deodorant containing microorganisms in the washing water little by little to increase the growth of spoilage bacteria in the washing water. Oxidation and floating substances are created by controlling the effect of the antibacterial and deodorant treatment and creating an environment in which microorganisms predominately proliferate, and even when the effect of the antibacterial and deodorant treatment is reduced, it is difficult for spoilage bacteria to grow. It is possible to prevent urinal contamination due to the generation of water very strongly.
The male toilet of the present invention has an antibacterial and deodorizing treatment after storing the urine discharged after the user urinates by the waste storage means and before supplying the washing water from the upper part of the urinal by the washing water circulation means. The antibacterial deodorant treatment agent is dripped and mixed into the washing water at a predetermined ratio by the agent supply means, and the slowly dissolving solid deodorant containing microorganisms is gradually dissolved in the washing water by the slowly dissolving solid deodorant supply means. In order to suppress the growth of spoilage bacteria by the effect of antibacterial and deodorant treatment, and to proliferate microorganisms dominantly, even if the effect of the antibacterial and deodorant treatment is reduced, to create an environment in which spoilage bacteria are difficult to grow, It is possible to prevent urinal contamination due to the generation of foul odors and suspended solids extremely strongly.

Next, the best mode for carrying out the present invention will be described.
The deodorizing and antifouling cleaning method for the male toilet of the circulation cleaning type of the present invention stores the urine discharged from the lower part of the urinal after the user urinates in the filth tank, and then stores the urine in the washing water tank from the upper part of the urinal. Wash the urinal by flowing a predetermined amount of the washed water with a circulation pump , collect the washed water discharged from the lower part of the urinal and store it again in the washing water tank. This is an improvement of the deodorizing and antifouling cleaning method for the circulation washing type male urinal used for washing the urinal while circulating the washing water for a predetermined period of time. Its characteristic configuration is that a urinal is provided with a sensor for detecting the presence or absence of a user, a slow-dissolving solid deodorant containing microorganisms is provided in a conduit through which wash water circulates, and an antibacterial deodorant treatment solution is used as a chemical solution. Before supplying the washing water stored in the washing tank from the upper part of the urinal by installing a metering pump that drops and mixes the antibacterial and deodorizing agent aqueous solution stored in the tank into the pipe through which the washing water circulates In addition , the circulation pump and metering pump are operated in conjunction with the output of the sensor that senses the absence of the user after urination , and the antibacterial deodorant is circulated in the wash water by the metering pump. dropwise is mixed in the range of 100~5000ppm against washing water, and contacting the gradually soluble solid deodorant containing microorganisms in the washing water by a circulation pump, Toko to Jo溶the wash water gradually soluble solid deodorant Located in. In the conventional cleaning method, the wash water is repeatedly used for circulating washing, so that the wash water is contaminated with contaminants such as urine and spoilage bacteria grows, leading to urinals due to the generation of malodor and floating matter. However, in the cleaning method of the present invention, the urine discharged after the user urinates is stored in the filth tank, and then the cleaning water stored in the cleaning water tank is put into the urinal. Before supplying from the upper part , the circulation pump and metering pump are operated in conjunction with the output of the sensing sensor that senses the absence of the user after urination, and the antibacterial deodorant treatment agent is added to the wash water by the metering pump. was added dropwise mixed at a predetermined ratio in the range of 5000 ppm, and by the gradually soluble solid deodorant containing microorganisms is dissolved little by little in the wash water, inhibit the growth of spoilage bacteria in the wash water by the effect of the antibacterial processing agent In addition, it can be stably prevented over a long period of time, and at the same time, a slowly-dissolving solid deodorant containing microorganisms resistant to antibacterial components contained in the antibacterial and deodorant treatment agent is gradually dissolved in washing water to In order to create an environment in which spoilage bacteria do not proliferate even when the effectiveness of the antibacterial and deodorant treatment is reduced by predominating growth, it is extremely difficult to cause foul odors and urinal contamination due to the generation of suspended matter. It can be strongly prevented. In this case, the effect is continued if the circulating wash water is replaced with clean wash water several times a day, but the entire amount is replaced with clean wash water at a rate of about once every 20-40 times. The effect can be maintained higher. That is, it is possible to suppress the frequency of changing the total amount of cleaning water.

  The antibacterial and deodorant treatment agent to be dropped and mixed into the circulating cleaning water is composed of an aqueous solution containing a biguanide antibacterial component and a surface active component, and the antibacterial component preferably contains PHMB as a main component. The antibacterial component is preferably contained in a proportion of 2% by weight to 10% by weight with respect to the total weight of the treatment agent. If the antibacterial component is less than 2% by weight, sufficient antibacterial effect cannot be obtained, and if it exceeds 10% by weight, the viscosity of the treatment agent becomes high. This is because waste is generated. PHMB, which is the main component of the antibacterial component in the antibacterial and deodorant treatment, is represented by the following formula (1), and is much less toxic and less irritating to the skin and mucous membranes than halogen or isothiazoline antibacterial preparations. It is a safe ingredient that has very little impact on the human body, such as having been used for many years as an antimicrobial agent for swimming pools.

In addition, PHMB has a larger number of functional groups effective for antibacterial and antiseptic effects than quaternary ammonium salts, and is less susceptible to inactivation due to contact with organic substances such as filth. Furthermore, there is little corrosiveness to the material forming the toilet, and there is no concern about water pollution due to low foaming. Since PHMB is structurally not as stable as halogen-based or isothiazoline-based ones, it is possible to adjust the durability of antibacterial power to some extent by the amount of dripping, and inactivate the antibacterial effect according to the usage time, After drainage, the wastewater treatment facility such as an activated sludge tank may not be affected. Therefore, by using an antibacterial and deodorant treatment agent whose main antibacterial component is PHMB, a stable anti-corrosion effect is maintained against the washing water in the washing water tank, and the safety is high. It becomes possible to provide a treatment agent with a low load, and an optimal effect can be expected as an antibacterial deodorization treatment agent for a circulation washing type male toilet.

  The surfactant component in the antibacterial and deodorant treatment agent is mainly composed of one or more of cationic, nonionic or amphoteric surfactants and is 1% by weight to 50% by weight based on the total weight of the treatment agent. % Is preferably included. The reason why one or more of cationic, nonionic and amphoteric surfactants as a surfactant component is the main component is to stabilize the antibacterial activity. If it is less than 1% by weight, a sufficient antibacterial effect cannot be obtained, and if it exceeds 50% by weight, the treatment agent becomes highly viscous. Preferably, it is 5 to 30% by weight. More preferably, it is 10 to 20% by weight. Any cationic, nonionic or amphoteric one can be used without any problem in the antibacterial and deodorant treatment agent of the present invention, but a low foaming one such as polyoxyalkylene ether is more preferred. is there. Specifically, as the cationic surfactant, one or more compounds selected from the group consisting of alkylamine oxide, polyoxypropylene chloride, diethylmethylammonium chloride and dimethyldiallylammonium chloride are nonionic. As the surfactant, one or two or more compounds selected from the group consisting of polyoxyalkylene ether, polyglycerin fatty acid ester, coconut fatty acid diethanolamide and nonylphenol ethoxylate are amphoteric surfactants. Compounds such as laurylamidopropylacetic acid betaine and laurylaminoacetic acid betaine are listed.

Moreover, when a nonionic surfactant is included in the surfactant component, an anionic surfactant can be further included at a ratio of less than an equivalent amount with respect to the weight of PHMB which is the main component of the antibacterial component. If the amount is equal to or greater than that, an anionic surfactant reacts with PHMB to cause precipitation. Examples of the anionic surfactant include alkylbenzene sulfonic acid, dialkyl sulfosuccinic acid ester salt, alcohol ether sulfate salt and the like. An anionic surfactant is included to give a cleaning effect.
The antibacterial and deodorant treatment agent of the present invention is preferably prepared so that the weight ratio of the antibacterial component and the surface active component is in the range of 1: 5 to 5: 1. If the weight ratio is out of the above range, the viscosity of the treatment agent becomes high and handling becomes difficult.

Moreover, the further deodorizing effect | action can be given to a processing agent by further including a plant extract in the ratio of 1 to 40 weight% with respect to the whole weight of the antibacterial deodorizing processing agent of this invention. It is preferable to contain a plant extract at a ratio of 5 wt% to 20 wt%. Examples of the plant extract include one or more compounds selected from the group consisting of clover extract, eucalyptus extract, cypress extract and pine needle extract. In addition, it is desirable to refrain from using a part of the plant extract containing a specific polyphenol polymer component such as koji extract because it reacts with PHMB to cause precipitation. It is preferable that the antibacterial and deodorant treatment agent of the present invention is mixed by dropping a fixed amount by operating a metering pump every time cleaning water is circulated and washed once. The dripping amount of the antibacterial deodorizing agent used in the cleaning method of the present invention is in the range of 100 to 5000 ppm of the antibacterial deodorizing agent with respect to the amount of circulating cleaning water . It is preferable to drop it in the range of 100 to 1000 ppm.

  A slow-dissolving solid deodorant containing microorganisms that are brought into contact with circulating washing water and gradually dissolved in this washing water is a solid composition obtained by blending stearyl alcohol as a dissolution regulator in solid polyethylene glycol at room temperature. As a blending active ingredient, a blend of microbial Bacillus subtilis and an organic acid is preferable. In the solid composition, microbial Bacillus subtilis and organic acid that contribute to deodorization and degradation of soil are blended as active ingredients, so that microbial Bacillus subtilis proliferates predominately using organic acid as a nutrient source, Even when the antibacterial and deodorant effect of the antibacterial and deodorant treatment is reduced, it is possible to create an environment in which spoilage bacteria are difficult to grow, and to extremely strongly prevent the adhesion of toilets due to the generation of bad odor and the generation of suspended matters. This slow-dissolving solid deodorant dissolves little by little in the circulating wash water, so that the effect is long-lasting. In particular, the microorganism Bacillus subtilis not only contributes to deodorization and decomposition of dirt, but also is not easily damaged by the antibacterial agent by forming spores. In particular, the antibacterial deodorant treatment agent mainly comprising PHMB used in the present invention is used. It is not killed by the antibacterial effect, and can grow rapidly at the stage where the antibacterial effect of PHMB has been weakened in the wash water, contributing to deodorization and the decomposition of dirt. In the case of trying to prevent the decay of washing water using only antibacterial and deodorant treatment agents, the use of environmentally friendly and safe antibacterial components will inevitably cause natural degradation. Proliferation of bacteria occurs actively, and it becomes impossible to suppress the progress of decay of the washing water, but in the washing method of the present invention, an antibacterial and deodorant treatment agent, a slowly dissolving solid deodorant containing a microorganism Bacillus subtilis and an organic acid, Even if the antibacterial component of the antibacterial and deodorant treatment is weakened, the microorganism Bacillus subtilis in the slow-dissolving solid deodorant proliferates preferentially compared to spoilage bacteria using organic acid as a nutrient source. Therefore, it is possible to provide an epoch-making means that it is possible to maintain a situation in which the cleaning water is hardly rotted.

The solid composition constituting the slow-dissolving solid deodorant is gradually added to the washing water over a long period of time without using a surfactant by blending stearyl alcohol as a dissolution regulator in solid polyethylene glycol at room temperature. The compounding active ingredient which melt | dissolves in and contains in a slow-dissolution solid deodorizer can be dissolved.
Polyethylene glycol, which is one of the essential components of the solid composition constituting the gradually dissolving solid deodorant, is solid at room temperature. Polyethylene glycol dissolves well in water and is suitable as a base material for mixing and molding a powdery active ingredient. There is a convenient moldability that liquefies when heated and solidifies when mixed with other chemicals. For example, since polyethylene glycol having an average molecular weight of about 6500 liquefies at about 65 ° C., it can be mixed without killing the microorganism Bacillus subtilis. The average molecular weight of polyethylene glycol is about 6500, indicating the most preferable viscosity for production and use. Polyethylene glycol is a safe substance frequently used in medicine and cosmetics.

  Stearyl alcohol blended as a dissolution regulator in the solid composition is a kind of higher alcohol having a structural formula represented by the following formula (2), and is a waxy solid having a melting point of 54 to 61 ° C., cream, emulsion It is a safe and stable substance that is used in many other cosmetics and is listed in the cosmetic raw material standards and other official standards as a naturally derived substance such as palm oil.

In the slow-dissolving solid deodorant of the present invention, stearyl alcohol is used as an agent that increases the strength of the solid molded product and adjusts the solubility in water. The amount of stearyl alcohol in the solid composition is, for example, 2 to 40% by weight, desirably 2 to 30% by weight. If the blending amount is small within this range, the solid composition dissolves quickly in water, and if the blending amount is large, it becomes difficult to dissolve and lasts longer. Stearyl alcohol is useful for adjusting and extending the dissolution time of solid compositions, and is well-familiar with polyethylene glycol, which is a base material, and is extremely easy to manufacture by heating, filling, and cooling and solidifying at the same time. Therefore, it also has the advantage that the price of the composition can be regulated.

  In addition to stearyl alcohol, solid higher alcohols that are mass-produced include cetyl alcohol, cetostearyl alcohol, behenyl alcohol, lanolin alcohol, hydrogenated lanolin alcohol, and the like. When these higher alcohols are used as dissolution regulators instead of stearyl alcohol, a solid composition similar to the case where stearyl alcohol is used is obtained. However, there are considerable differences in the state of dispersion in water. That is, the solid composition using stearyl alcohol as a dissolution regulator is uniformly cloudy from the outside without using a surfactant, whereas the solid composition using the higher alcohol is uniformly cloudy. As long as it does not disperse and loses its shape in a short period of time and does not contain a surfactant or other additives, it is not suitable for use in the present invention. This is a characteristic that only stearyl alcohol has good affinity with polyethylene glycol.

  You may mix | blend a paraoxybenzoic acid ester with a stearyl alcohol as a melt | dissolution regulator of the solid composition which comprises a slow dissolving solid deodorizer. Due to the action of paraoxybenzoate on stearyl alcohol, swelling in water in the solid composition, which tends to occur when a surfactant is used, does not occur at all, and the solid composition does not break even during long-term use. In addition, the effect is obtained that the particles are finely dissolved as if the soap is dissolved and uniformly melted from the outside to be reduced. Examples of the paraoxybenzoic acid ester include propyl paraoxybenzoate, isopropyl paraoxybenzoate, butyl paraoxybenzoate, isobutyl paraoxybenzoate, and the like. Of these, butyl paraoxybenzoate represented by the following formula (3) is particularly suitable because it is not sticky. This butyl paraoxybenzoate is a safe substance that is listed in Japanese pharmacopoeia and official standards such as cosmetic raw material standards and is widely used as a preservative in cosmetics and pharmaceuticals. In addition, since paraoxybenzoic acid methyl and ethyl paraoxybenzoate isolate | separate among paraoxybenzoic acid ester, it cannot be said that it is suitable for the slow dissolving solid deodorizer of this invention.

Moreover, since the paraoxybenzoic acid ester has an antibacterial action against miscellaneous bacteria, it can be expected to more effectively suppress the generation of malodor due to the propagation of miscellaneous bacteria. Furthermore, there is an advantage that even if it coexists with microbial Bacillus subtilis which is an effective ingredient, it does not have any adverse effect. For example, it is confirmed that 10 ⁶ viable bacteria are maintained per gram of deodorant containing 5 to 10% by weight of butyl paraoxybenzoate and 0.5 to 1.0% by weight of Bacillus subtilis preparation. Has been. Thus, paraoxybenzoic acid ester has not only a mixing aid, but also has an antibacterial action and can be shared with spore-forming microorganisms such as microbial Bacillus subtilis, and has the great feature of further enhancing the deodorizing effect. ing. The compounding amount of the paraoxybenzoic acid ester in the solid composition is, for example, 1 to 20% by weight, preferably 1 to 10% by weight as a range in which a stable molded product is obtained. When the amount of the dissolution regulator in the solid composition is 2 to 30% by weight of stearyl alcohol and 1 to 10% by weight of paraoxybenzoic acid ester, it is used as a base material for a deodorant for flush toilets. Shows suitable physical properties.

  Microbial Bacillus subtilis blended as an effective blending component that constitutes a slow-dissolving solid deodorant is a useful microorganism derived from soil, and forms spores even at a high temperature of 65 to 70 ° C. and does not die. Therefore, even when microbial Bacillus subtilis is mixed with a polyethylene glycol base material heated and liquefied at a temperature lower than the above temperature, it does not die and can be cooled and solidified thereafter. In addition, since it has acid resistance, it is not deactivated in combination with an organic acid. Moreover, since the decomposition | disassembly effect | action of organic substance is strong, there exists an effect which eliminates a bad smell generation source as a result.

  In general, microorganisms are safe and have a wide range of applications, and can be expected to have a continuous effect on deodorizing bad odors. There is a drawback that it is difficult to do. Therefore, in the slow-dissolving solid deodorant of the present invention, an organic acid having an immediate effect capable of immediately neutralizing ammonia and amine odor and making it non-bromide is blended together with microorganisms as an effective blending component. Furthermore, this organic acid can also serve as a nutrient source for the microorganism Bacillus subtilis and contributes to its growth. Organic acid compounded as an effective compounding ingredient is the most suitable physical property for use as a base material for deodorizers for flush toilets, in which a solid composition is made into finer particles and dispersed in water and does not give a sticky feeling. Can be shown. Examples of the organic acid include fumaric acid represented by the following formula (4).

Fumaric acid is a kind of organic solid acid, malic acid, citric acid, etc., which is often used for deodorants and food acidulants. Unlike other organic acids, it has a low solubility in water and dissolves little by little. Therefore, by blending with a slow-dissolving solid deodorant, the slow-dissolving solid deodorant has an advantage that it lasts for a long time. The blending ratio of fumaric acid contained in the slowly soluble solid deodorant is 10 to 70% by weight, preferably 20 to 60% by weight, particularly preferably 30 to 50% by weight. For example, when about 40% by weight of fumaric acid powder of 300 mesh pass is blended, a stable molded product can be obtained.

  When the four components of polyethylene glycol, stearyl alcohol, paraoxybenzoic acid ester and fumaric acid are blended together in the above range, the slowly dissolving solid deodorant of the present invention has a small mass of stearyl alcohol which is completely insoluble in water. The finest particles are obtained and the highest dispersion effect is obtained.

Next, the circulation washing type male toilet used in the washing method of the present invention will be described.
As shown in FIG. 1, the circulation washing type male toilet of the present invention includes a urinal 11, a filth storage means 12 for storing urine discharged from the lower part of the urinal after the user urinates, and an upper part of the urinal. Wash the urinal by flowing a predetermined amount of wash water stored in the wash water tank, collect the wash water discharged from the lower part of the urinal and store it again in the wash water tank. Washing water circulation means 13 for washing the urinal while circulating the washing water for a predetermined period each time, and a medicine that holds the slowly-dissolving solid deodorant on the inner wall of the washing water supplied to the urinal by the washing water circulation means 13 A slow-dissolving solid deodorant supply means 14 for slowly dissolving the slowly-dissolving solid deodorant in the wash water by passing through the cylinder, and a predetermined amount of antibacterial deodorant treatment agent in the wash water supplied to the urinal by the wash water circulation means 13 Antibacterial deodorant treatment agent to be dripped and mixed at a rate And it means 16.

The urinal 11 is provided with a detection sensor 11a for detecting the presence or absence of a person. A supply pipe 17 for flowing washing water is provided at the upper part of the urinal 11, and a discharge pipe 18 for discharging urine and washing water from the urinal 11 is provided at the lower part of the urinal 11. The discharge pipe 18 is provided with a pipe switching valve 19 for switching the flow of discharged liquid to the filth storage means 12 and the washing water circulation means 13. One of the pipe switching valves 19 is provided with a filth storage side pipe 21 to the filth storage means 12 and a filth tank 22 connected to the filth storage side pipe 21. Further, the other of the pipe switching valve 19 is a pipe for circulating the washing water to the washing water circulation means 13 , that is, the washing water circulation side pipe 23, the washing water tank 24 connected to the washing water circulation side pipe 23, and the washing A circulation pump 26 for circulating water is provided. The slow-dissolving solid deodorant supply means 14 is provided in the washing water circulation means 13, and a chemical liquid cylinder is provided at a position through which the washing water circulating from the washing water tank 24 to the urinal 11 passes. The slow-dissolving solid deodorant is held, and the slow-dissolving solid deodorant is gradually dissolved in the cleaning water by passing the cleaning water through the chemical cylinder. The antibacterial deodorant treatment agent supply means 16 circulates a predetermined amount of the antibacterial deodorant treatment agent when the washing water washes the urinal 11 in conjunction with the chemical tank 27 storing the antibacterial deodorant agent and the sensing sensor 11a. It is comprised by the metering pump 28 dripped and mixed in.

  In the circulation washing type male toilet having such a configuration, first, when a person stands in front of the urinal 11, the detection sensor 11a provided in the urinal 11 detects the presence of the person, and the pipe switching valve 19 is It switches from the closed state to the filth storage means 12 side. Next, after adding a urine, when a person leaves the urinal 11, the detection sensor 11 a detects the absence of the person, and as a pre-cleaning, the circulation pump 26 of the cleaning water circulation means 13 is activated and the cleaning water tank 24 A small amount of wash water of about 0.2 L flows from the upper part of the urinal 11 to wash away urine, and the wash water containing urine discharged from the lower part of the urinal 11 is discharged from the discharge pipe 18, the pipe switching valve 19, and the waste storage side. It is stored in the filth tank 22 via the pipeline 21. Since the small amount of cleaning water used in this pre-cleaning is stored in the filth tank 22, the cleaning water stored in the cleaning water tank 24 gradually decreases. Therefore, after the cleaning is completed, the cleaning water tank 24 replenishes the cleaning water tank 24 with the same amount of clean cleaning water as that used in the pre-cleaning.

  Next, after the pre-cleaning is completed, the pipe switching valve 19 is switched from the filth storage means 12 side to the cleaning water circulation means 13 side, and subsequently, as the main cleaning, the circulation pump 26 of the cleaning water circulation means 13 is operated to perform cleaning. A large amount of washing water of about 3.8 L flows from the water tank 24 to the upper part of the urinal 11, flushes the urinal 11, and the washing water discharged from the lower part of the urinal 11 is discharged into the discharge pipe 18 and the pipe switching valve 19. The water is stored again in the cleaning water tank 24 via the cleaning water circulation side pipe line 23. In this main cleaning, when the cleaning water stored in the cleaning water tank 24 is supplied from the upper part of the urinal 11, the circulating cleaning water passes through the chemical cylinder of the slow-dissolving solid deodorant supply means 14, so that the inner wall of the chemical cylinder The slowly-dissolving solid deodorant containing the microorganisms held in the solution is gradually dissolved. Further, the metering pump 28 of the antibacterial and deodorant treatment agent supply means 16 operates in conjunction, and the antibacterial and deodorant agent stored in the chemical tank 27 is dropped and mixed into the cleaning water flowing in the drug cylinder at a rate of about 1 mL, for example. The antibacterial deodorant treatment agent is added dropwise to the cleaning water at a predetermined ratio by the antibacterial deodorant supply means, and the gradually dissolved solid deodorant containing microorganisms is gradually dissolved in the wash water by the slow dissolution solid deodorant supply means. Therefore, the environment in which spoilage bacteria are difficult to grow even if the effect of the antibacterial and deodorant treatment agent is suppressed by the effect of the antibacterial and deodorant treatment agent and the effect of the antibacterial and deodorant treatment agent is reduced due to the dominant growth of the microorganisms. Therefore, it is possible to extremely strongly prevent urinal contamination due to generation of bad odor and generation of suspended matter. Finally, the pipe switching valve 19 is switched from the washing water circulation means 13 side to the closed state.

  In the present embodiment, the antibacterial and deodorant treatment agent is dropped and mixed into the washing water through the drug tube of the slow-dissolving solid deodorant supply means 14, but a T-shaped tube is installed in the pipe above the urinal 11 It is good also as a structure which drops and mixes. Further, the antibacterial deodorant treatment agent supply means 16 is provided with a flow meter 29 for measuring the amount of the antibacterial deodorant treatment agent mixed in the drop, and an integration counter 31 for integrating and displaying the flow rate value measured by the flow meter 29, You may make it measure the flow value of an antibacterial deodorant processing agent.

Next, examples of the present invention will be described in detail together with comparative examples.
<Examples and Comparative Examples>
Two locations (No. 3 and No. 9) in the circulation wash type men's toilet shown in FIG. 7 that are already installed in the E2 series J10 train (10-car train) owned by East Japan Railway Company for a predetermined period. The men's toilet of the present invention was installed in the present invention, and a test was conducted to compare the occurrence of odor and dirt with two existing toilets (No. 1 and No. 5) that were not installed.
(1) Installation of Circulating Washing Type Men's Toilet of the Present Invention FIG. 7 shows an existing circulating washing type male toilet (hereinafter referred to as an existing toilet) of J10 organization. As shown in FIG. 7, the existing toilet was stored in the urinal 11, the filth storage means 12 for storing the urine discharged from the lower part of the urinal after the user urinates, and the wash water tank from the upper part of the urinal Wash the urinal by flowing a predetermined amount of wash water, collect the wash water discharged from the lower part of the urinal and store it again in the wash water tank. A washing water circulation means 13 for washing the urinal while circulating for a predetermined period, and a washing water supply means 15 for supplying clean washing water to the washing water tank are provided. That is, the existing toilet shown in FIG. 7 has the same configuration except that it does not have the slow-dissolving solid deodorant supply means 14 and the antibacterial deodorizing agent supply means 16 of the circulation washing type male toilet shown in FIG. ing. Among such existing toilets, the circulation washing type male toilet of the present invention shown in FIG. 1 was installed in two places, No. 3 car and No. 9 car.
(2) Operation of Circulation Washing Men's Toilet Operation of the circulation washing men's toilet of the present invention will be described.

 (a) First, when a person stands in front of the urinal, the detection sensor provided in the urinal detects the presence of the person, and the conduit switching valve is switched from “closed” to “dirt tank side”.

 (b) Next, after adding the urine, when the person leaves the urinal, the sensor detects the absence of the person, and as a pre-wash, 0.2 L of rinsing water flows into the urinal and rinses the urine. Wash water containing urine discharged from the lower part of the toilet bowl is stored in a waste tank.

(c) Next, after the pre-washing is completed, the pipeline switching valve is switched from the “dirt tank side” to the “washing water tank side”, and then 3.8 L of washing water flows to the urinal as the main washing. Then, the urinal is washed away, and the wash water discharged from the lower part of the urinal is stored again in the wash water tank. In this main cleaning, when the cleaning water stored in the cleaning water tank is supplied from the upper part of the urinal, the circulating cleaning water is retained on the inner wall of the chemical cylinder by passing through the chemical cylinder of the slow-dissolving solid deodorant supply means 14 The gradually dissolved solid deodorant is gradually dissolved. In addition, the metering pump of the antibacterial deodorant treatment agent supply means 16 is operated in conjunction, and 1 mL of the antibacterial deodorant agent is dripped and mixed into the cleaning water flowing in the drug cylinder. In the antibacterial deodorant treatment agent supply means 16, the flow meter detects the amount of the antibacterial deodorant treatment agent mixed in the drop, and the detected numerical value is integrated and displayed on the integration counter. (In this test, it is 1 mL at a time, and this number is the number of times the toilet is used.)
(d) Finally, the pipe switching valve is switched from the “wash water tank side” to the “closed” state, and the wash water replenishing means 15 performs a 0.2 L clean wash of the same amount as that used in the pre-wash. Water is supplied to the wash water tank.
(3) Method of verifying the effect In order to verify the effectiveness of the circulation washing type male toilet of the present invention, in the situation where the toilet on the day before the cleaning maintenance in the alternating inspection of the J10 organization was most dirty, each of the circulation washing type male toilets The situation of odor and dirt was investigated while Morioka Shinkansen Vehicle Center was anchored. An example of the schedule is shown in FIG.

(3-1) Odor and dirt situation investigation of each circulation washing type men's toilet After the last operation before J10 organization finished the police box inspection and entering the Morioka Shinkansen vehicle center, the odor and each circulatory washing type men's toilet The situation of dirt was investigated. As verification items, we confirmed the amount of ammonia, which is the main bad odor of toilets, sensory evaluation based on odor intensity, the pH of circulating cleaning water, and the condition of dirt on the toilet bowl and back filter. Specifically, the amount of ammonia generated was measured from the center hole of the eye plate that is most easily detected using a Kitagawa gas detector tube as shown in FIG. For sensory evaluation of odor, the odor intensity according to the six-step odor display method was used as a scale. The pH of the circulating cleaning water was measured by sampling the circulating cleaning water and using a portable pH meter. The condition of the filter on the toilet bowl and the back of the eye plate was confirmed by taking a picture of the filter and toilet bowl. FIGS. 4 (a) to 4 (d) show photographs of toilets of No. 1, No. 3, No. 5, and No. 9.

(3-2) Investigation of microorganisms in the circulating wash water Circulating wash water was sampled in each of the male wash toilets of J10 organization at the time of the survey, and the number of viable bacteria was investigated. The sampled circulating wash water is diluted 100 times to prepare a diluted solution. This diluted solution is inoculated on a normal agar medium by the dilution plate method, cultured at 35 ° C. for 48 hours, and the number of colonies that appear is counted. The number of viable bacteria per 1 ml of the circulating washing water was calculated from the dilution rate and the inoculation amount. Moreover, the form of the colony which appeared was observed and the photography was performed. The photograph figure which shows the colony form which culture | cultivated the wash water sampled to Fig.5 (a)-FIG.5 (d) is shown.
(4) Survey results
(4-1) Sensory evaluation results based on ammonia generation amount and odor intensity Table 1 shows sensory evaluation based on ammonia generation amount and odor intensity in each of the circulating wash men's toilets in (3-1) above. As a comparison, Table 1 also shows the state of odor before installing the circulation washing type male toilet of the present invention.

  As can be seen from Table 1, the odor situation was caused by the generation of bad odors in Cars 3 and 9 where the circulation wash type men's toilet of the present invention was installed, compared with the existing Car 1 and Car 5 before installation. Was clearly reduced.

(4-2) Result of pH of circulating wash water Table 2 shows the pH value of the circulating wash water for each of the men's toilets in the above (3-1). As a comparison, Table 2 also shows the state of odor before installing the circulation washing type male toilet of the present invention.

  Circulating wash water has a pH of about 6 to 7 when it is stored in the wash water tank before the operation of the toilet. However, if urine components are mixed by repeated circulation washing, it will be decomposed by spoilage bacteria, and decay will progress. At the same time, the pH rises, and when the pH is 8 or more, generation of ammonia is observed. As is clear from Table 2, the circulation wash type men's toilet of the present invention is pH 8 or higher in both the first and fifth cars before and after the installation of the circulation wash type men's toilet of the present invention. It was confirmed that the pH was suppressed to 8 or less in the No. 3 car and No. 9 car in which the vehicle was installed. Since this result is consistent with the odor status in Table 1, it was proved that the installation of this system suppressed the progress of decay of the circulating wash water and prevented the generation of odors such as ammonia.

(4-3) Contamination condition The dirt condition of the filter on the back of the eye plate was visually confirmed for each of the J10-organized male toilets of the J10 organization that was investigated, and the toilet condition was photographed. As a result of confirming the condition of the filter on the back of the eye plate, the No. 1 and No. 5 cars that did not have the men's toilet of the present invention tended to turn dirty and brown. The car No. 3 and No. 9 with the circulation washing type men's toilet of the present invention hardly showed this dirt tendency and kept clean.

As is clear from FIGS. 4 (a) to 4 (d), in the case of Car 1 and Car 5 where the circulation washing type men's toilet of the present invention was not installed, dirt was conspicuous around the drain outlet. As can be seen, dirt was hardly noticeable in Cars 3 and 9 equipped with the men's toilet of the present invention. From the above, it has been proved that the installation of the circulation washing type male toilet of the present invention is effective in preventing the phenomenon that dirt is adhered to the filter and the toilet.
(5) Investigation of microorganisms in circulating wash water
(5-1) Investigation of the number of viable bacteria The number of viable bacteria contained in the circulating wash water collected in each of the J10 organized washrooms for men was investigated over time for each car. The results are shown in Table 3. For comparison, Table 3 also shows the number of viable bacteria before installing the circulation washing type male toilet of the present invention.

As apparent from Table 3, the number of viable bacteria was observed at a level of 10 ⁵ to 10 ⁷ per 1 ml of the circulating washing water in any toilet. No clear difference was observed in the number of viable bacteria in Car 3 and Car 9 equipped with the circulation washing type male toilet of the present invention and Car 1 and Car 5 which were not installed.

(5-2) Observation of colony morphology The appearance of colonies appeared on the plates cultured for the measurement of the number of viable bacteria in the circulating wash water. As shown in Figs. 5 (a) to 5 (d) In addition, there are several types of bacteria forming large colonies in Car 1 and Car 5 where the circulating wash boy toilet of the present invention was not installed, whereas Car 3 was equipped with the circulation wash boy toilet of the present invention. And in Car 9 only small colonies of a single species of bacteria were observed. It has been found that the types of bacteria that grow are different between the places where the circulation washing type men's toilet of the present invention is installed and not.

(5-3) Urine spoilage test with washing water collection bacteria From the results of (5-2) above, the type of bacteria growing in the circulating wash water may differ depending on whether or not the circulating wash boy toilet of the present invention is installed. These observations suggest that these bacteria may have a difference in action on circulating wash water containing urine components in the circulating wash water tank. Therefore, inoculating a colony collected from Car No. 3 with the circulation washing type men's toilet of the present invention and a colony collected from Car No. 1 that was not installed into a basal medium containing urine components, there was a difference in action. The following tests were conducted.

  First, 50 ml of urine and 50 ml of ion-exchanged water were placed in a 300 ml Erlenmeyer flask to make a basal medium. The basal medium was inoculated with a plurality of colonies collected from the first car (existing toilet) and a single seed colony collected from the third car (present invention) as follows. In addition, a non-inoculated basal medium was prepared as a blank. These media were shaken at a constant temperature of 37 ° C. to culture the bacteria. The pH of the medium was measured every hour until 0-12 hours of culture and every 3 hours until 12-18 hours of culture. Further, the amount of ammonia generated from the medium was measured using a Kitagawa gas detector tube after 8 hours of culture, 12 hours of culture and 18 hours of culture. FIG. 6 shows the measured pH value and the measured ammonia value, respectively.

  As is clear from FIG. 6, in the medium inoculated with a plurality of types of colonies collected from the first car, an increase in pH was observed after 4 hours of culture, and then a rapid increase was observed. The amount of ammonia generated was detected as high as 24 ppm after 12 hours of culture and as high as 120 ppm after 18 hours of culture. Obviously, the phenomenon of decaying in the basal medium was observed. On the other hand, in the medium inoculated with a single type of colony collected from Car 3, as with the non-inoculated blank medium, little increase in pH and generation of ammonia were observed. From this test result, multiple types of bacteria collected from Car 1 are obviously rots that cause urinary decay, whereas single bacteria collected from Car 3 are completely involved in urine decay. It was confirmed that the microorganism was Bacillus subtilis contained in the slow-dissolving solid deodorant used in the circulating washing male toilet of the present invention from the form of the colony. From the above, the circulating cleaning water in the existing circulating cleaning men's toilet where the circulating cleaning men's toilet of the present invention is not installed contains spoilage bacteria. In contrast to the cause of the occurrence, when the circulatory washing men's toilet of the present invention is installed, rot bacteria are not included in the circulatory washing water, and the microorganism Bacillus subtilis that contributes to deodorization and dirt decomposition grows. Thus, it was proved that it created a situation where the circulating wash water was not spoiled. That is, the circulation washing type male toilet of the present invention suppresses the growth of spoilage bacteria in the circulation washing water by the antibacterial deodorizing agent, and the microbial Bacillus subtilis contained in the slowly dissolving solid deodorant is dominant. It was confirmed that it contributed to the prevention of malodor and dirt while maintaining the condition that the circulating washing water did not rot.

Schematic which shows the circulation washing type men's toilet of this invention. The figure which shows the verification schedule in the circulation washing type male toilet of this invention. The photograph figure which shows the measurement of the generation amount of ammonia using a Kitagawa type gas detector tube. The photograph figure which shows the condition of the dirt of the toilet bowl in 1st car, 3rd car, 5th car, and 9th car. The photograph figure which shows the plate which culture | cultivated the living microbe of the circulating washing water extract | collected from 1st car, 3rd car, 5th car, and 9th car. The figure which shows the urine rot test in the microbe which culture | cultivated the living microbe of the circulating washing water extract | collected from the 1st car and the 3rd car. Schematic which shows the existing circulation washing type toilet for men.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Circulating washing type men's toilet 11 Urinal 12 Waste storage means 13 Washing water circulation means 14 Slowly soluble solid deodorant supply means 15 Washing water supply means 16 Antibacterial deodorant treatment means supply means

Claims (4)

After storing the urine discharged from the lower part of the urinal after the user urinates in the filth tank,
A predetermined amount of washing water stored in the washing water tank is flowed from the upper part of the urinal by a circulation pump to wash the urinal, and the washed water discharged from the lower part of the urinal is collected and washed again. In a deodorizing and antifouling cleaning method for a circulation washing type male urinal that is stored in a water tank and used to wash the urinal while circulating the washing water for a predetermined period each time the user urinates,
A sensation sensor for detecting the presence or absence of the user is provided in the urinal;
Provide a slow-dissolving solid deodorant containing microorganisms in the pipeline through which the washing water circulates,
Store the antibacterial and deodorizing agent aqueous solution in the chemical tank,
Provided a metering pump that drops and mixes the antibacterial and deodorizing agent aqueous solution stored in the chemical tank into the conduit through which the washing water circulates,
By operating the circulation pump and the metering pump in conjunction with the output of the detection sensor that senses the absence of the user after urination,
The dripped mixed in a range of 100~5000ppm against washing water circulating Antibacterial treatment agent to the washing water by a metering pump, and a gradually soluble solid deodorant containing the microorganism into the wash water by the circulating pump A deodorizing and antifouling cleaning method for a circulation cleaning type men's toilet, wherein the slow dissolving solid deodorant is gradually dissolved in the cleaning water. The antibacterial processing agent is an aqueous solution containing a biguanide antimicrobial component and a surfactant component, wherein the antimicrobial component is viewed contains as a main component polyhexamethylene biguanide hydrochloride, the gradually soluble solid deodorant solid polyethylene at room temperature The method according to claim 1 , wherein microbial Bacillus subtilis and an organic acid are blended as a blending active ingredient in a solid composition obtained by blending stearyl alcohol as a dissolution regulator in glycol . A urinal (11) provided with a detection sensor (11a) for detecting the presence or absence of the user ,
The urinal after the user has urinating and (11) waste reservoir means for storing the urine discharged from the bottom (12),
A circulation pump (26) is provided, and the urinal (11) is washed by flowing a predetermined amount of washing water stored in a washing water tank from the upper part of the urinal (11) by the circulation pump (26). The wash water discharged from the lower part of the toilet bowl (11) is collected and stored in the wash water tank again, and the wash water is circulated for a predetermined period each time the user urinates the urinal (11 Cleaning water circulation means (13) for cleaning)
The washing water supplied to the urinal (11) by the washing water circulation means (13) is passed through a drug cylinder holding a slowly-dissolving solid deodorant on the inner wall to gradually dissolve the slowly-dissolving solid deodorant in the washing water. A slowly dissolving solid deodorant supplying means (14),
It has a metering pump (28), said to drop mixed antibacterial treatment agent solution at a predetermined ratio by the metering pump in the washing water supplied to the urinal (11) (28) by the cleaning water circulating means (13) Antibacterial deodorant treatment means supply means (16),
Bei example a washing water supply means for supplying a clean washing water to the wash water tank (15),
The circulation pump (26) and the metering pump (28) are operated in conjunction with each other by the output of the sensor (11a) that senses the absence of the user after urination, and the metering pump (28) The antibacterial deodorant treatment agent is circulated in the washing water in a range of 100 to 5000 ppm with respect to the amount of washing water circulating, and the slowly dissolving solid deodorant is brought into contact with the washing water by the circulation pump (26). Circulating and washing male toilet , characterized in that the slowly-dissolving solid deodorant is gradually dissolved in the washing water . The antibacterial processing agent is an aqueous solution containing a biguanide antimicrobial component and a surfactant component, wherein the antimicrobial component is viewed contains as a main component polyhexamethylene biguanide hydrochloride, the gradually soluble solid deodorant solid polyethylene at room temperature The toilet according to claim 3 , wherein microbial Bacillus subtilis and an organic acid are blended as a blending active ingredient into a solid composition obtained by blending stearyl alcohol as a dissolution regulator in glycol .