Washing and treating method for object to be treated and green land spraying agent including produced agent produced by the method as main component

Abstract

To provide a washing and treating method which includes diluting a washing and treating agent having being used to perform washing and coating formation in piping with water, the washing and treating agent being able to be then used to promote greening by, for example, being directly sprayed to green land.SOLUTION: A washing and treating method for an object to be treated includes: a washing and activating step of adding a component for washing and activating a surface of an object to be treated to water to improve the water into a first washing and treating agent and bringing the first washing and treating agent into contact with the surface of the object to be treated to wash and activate the surface of the object to be treated; an activation keeping step of adding a component for keeping an activated state to the first washing and treating agent to improve the water into a second washing and treating agent and bringing the second washing and treating agent into contact with the surface of the object to be treated to keep an active state of the surface of the object to be treated; and a coating formation step of adding a component for forming a coating having a predetermined function to the second washing and treating agent to improve the water into a third washing and treating agent and bringing the third washing and treating agent into contact with the surface in the active state to form the coating.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a cleaning and treatment method capable of cleaning an object to be treated that may come into contact with water and forming a film having a predetermined function on the surface of the object to be treated, and a green space spraying agent that can be directly sprayed on a green space by diluting a generant obtained after cleaning and treating the object to be treated.

Background Art

[0002] There are various objects to be treated that may come into contact with water. For example, there are cooling towers and heat exchangers that adjust room temperature and the like by utilizing the latent heat of vaporization of water, and air conditioning equipment in which the surface in contact with water constitutes a part of a heat exchanger or the like, and / or heat treatment equipment, machine tools, and vehicle radiators that are cooled by water, and also various equipment and devices such as electric and electronic equipment and circuit boards, and further, mechanical parts, medical instruments such as surgical instruments, etc. that are cleaned by water can be mentioned. For example, in the above-mentioned air conditioning equipment, equipment, and devices (hereinafter referred to as equipment), due to long-term contact with water, corrosion and rust may occur inside, impurities contained in the water may adhere and accumulate on the inner surface of the equipment, deteriorating the cooling effect and the flow of water, bacteria may multiply, and a part of the corrosion products, rust, and adherents peeled off from the inner surface of the pipe may mix into the water and clog fine holes such as nozzles.

[0003] Therefore, in addition to periodically cleaning the inside of the equipment piping, in order to make it difficult for corrosion and rust to occur, make it difficult for adherents to adhere and accumulate, and suppress the growth of bacteria, a functional coating (film) is also formed inside the pipe after cleaning. Also, the cleaning inside the pipe is performed by flowing cleaning water into the pipe. However, most of the adherents are deposits of inorganic salts such as silica and calcium dissolved in water called "scale". Therefore, in order to remove such adherents, a cleaning agent such as a surfactant is mixed into the cleaning water.

[0004] After cleaning the surface inside the pipe with the cleaning water containing the above detergent, the cleaning water is drained, and a polishing liquid mixed with an abrasive or the like is flowed into the pipe to polish the surface so that a film is easily formed. Then, the polishing liquid is drained, and a film-forming liquid mixed with a film-forming agent is flowed into the pipe to form a film such as a metal film. The cleaning water, polishing liquid, and film-forming liquid drained in each of the above steps are discarded as waste liquid. However, since there is a risk of causing water pollution and soil contamination, it is necessary to collect and appropriately treat them, which is one of the factors increasing the cost of maintenance such as cleaning and coating inside the pipe. Such problems are not limited to pipes but are the same for other objects to be treated that may come into contact with the water described above. Therefore, proposals have been made in, for example, Patent Documents 1, 2, etc. to treat the above waste liquid and reuse it as fertilizer or the like.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Disclosure of the Invention

Problems to be Solved by the Invention

[0006] However, in the technology of Patent Document 1, it is necessary to perform electrolytic oxidation treatment on the waste liquid. In the technology of Patent Document 2, in order to remove organic components and oxidize ions, it is necessary to generate ozone as fine bubbles by an ozone supply means and a fine bubble generation means and introduce ozone with strong oxidizing power into the plating waste liquid. Therefore, it is difficult to solve the problem of suppressing the maintenance cost because it is costly for treatment equipment and equipment operation. In addition, even if these treatments are performed, there is a possibility of generating waste such as harmful waste liquid and sludge, and there is a risk of new problems that these treatments will be required. The present invention has been made to solve these problems.

Means for Solving the Problem

[0007] As a result of the inventors' intensive research, it was conceived that the above problems can be solved by using the modifier-related technologies (known from, for example, Patent No. 5422696 and Patent No. 6455746) by the applicant of the present application. That is, the modifier by the applicant of the present application can be produced only from natural components (components harmless to humans, animals, plants, and the environment, hereinafter referred to as "natural components") used within a range not exceeding the amount showing fruit acid and ecological harmfulness, and has the property of being able to clean and activate the surface of the object to be treated. The modifier contains natural components capable of maintaining the activated state of the surface. Further, by dissolving a metal, which is a natural component and has excellent functionality such as corrosion resistance, thermal conductivity, and antibacterial properties, such as gold, silver, and copper, in the modifier, it is possible to form a film on the surface. Focusing on this, it was found that a series of steps including cleaning and activation of the surface of the object to be treated, maintenance of activation, and formation of a functional film can be achieved by using a cleaning and treatment agent based on the above modifier composed only of natural components. And since the cleaning and treatment agent discharged by each of these treatments is a natural component and also contains components beneficial to plant growth, it can be directly sprayed on the green space just by diluting it with water or the like. This indicates that the cleaning and treatment of the object to be treated can be a production process for generating a beneficial green space spraying agent that grows or assists in the growth of plants in the factory site, park, or other green spaces.

[0008] The inventive concept of the present invention is, as described in claim 1, in a method for cleaning and treating an object to be treated that comes into contact with water, natural components for cleaning and activating the surface of the object to be treated are added to the water to improve the water into a first cleaning and treating agent, and by bringing this first cleaning and treating agent into contact with the surface of the object to be treated, a cleaning and activating step of cleaning and activating the surface of the object to be treated; components for maintaining the activated state of the surface, which are natural components, are added to the first cleaning and treating agent to improve the water into a second cleaning and treating agent, and by bringing this second cleaning and treating agent into contact with the surface of the object to be treated, an activation maintaining step of maintaining the activated state of the surface of the object to be treated; components for forming a film having a predetermined function, which are natural components, are added to the second cleaning and treating agent to improve the water into a third cleaning and treating agent, and bringing this third cleaning and treating agent into contact with the surface in an activated state to form the film on the surface, which is a film forming step.

[0009] According to the present invention, after cleaning and activating with the first cleaning and treating agent based on the modifier, the first cleaning and treating agent is improved into a second cleaning and treating agent, and the second cleaning and treating agent is improved into a third cleaning and treating agent. Therefore, there is an advantage that it is not necessary to prepare completely different types of treating agents for each step. It is also possible to recover the used first cleaning and treating agent and the second cleaning and treating agent and improve them into the second cleaning and treating agent and the third cleaning and treating agent. When the object to be treated can store each cleaning and treating agent, such as in a pipe, components for maintaining activation or components for film formation may be added to the first cleaning and treating agent and the second cleaning and treating agent inside the pipe or the like to improve them into the second cleaning and treating agent and the third cleaning and treating agent.

[0010] Furthermore, the inventor of the present invention has found that by adding a component (decomposing agent) that decomposes the coating to water such as cooling water flowing through the facility or cleaning water for cleaning the substrate, etc., and allowing the coating to gradually decompose over a certain period of time, the surface of the coating can always be kept in a new state and the functionality of the coating can be maintained over a long period. Also, there is an advantage that the contact area of cooling water, etc. is increased due to the roughening of the coating surface by decomposition, and the heat dissipation and heat exchange efficiency in the cooling tower and heat exchanger can be improved. Specifically, as described in claim 2, a decomposing agent of a natural component that decomposes the coating may be added to the water, and the water containing the decomposing material may be brought into contact with the surface on which the coating is formed so that the coating is gradually decomposed within a preset period. Note that a surfactant that smoothly promotes the decomposition of the coating or an inhibitor, etc. can be added for the purpose of preventing the surface of the object to be treated from being excessively etched after the coating is removed. Furthermore, "decomposition" includes "peeling" in which the layered coating is peeled off one by one.

[0011] More specifically, as described in claim 3, (A) a chlorine compound, (B) a nitrate compound, and (C) a phosphate compound are added to the water to improve the water into the first cleaning and treating agent, and the surface of the object to be treated is cleaned and activated by bringing this first cleaning and treating agent into contact with the surface of the object to be treated. In the first cleaning and treating agent used in the cleaning and activation step, a complex-forming component that forms a complex with the metal ions on the activated surface is added to improve the first cleaning and treating agent into the second cleaning and treating agent, and the second cleaning and treating agent is brought into contact with the surface of the object to be treated to maintain the active state of the surface of the object to be treated. In the second cleaning and treating agent used in the activation maintenance step, after dissolving one or more kinds of metals, a reducing agent having a reducing action is added to improve the second cleaning and treating agent into the third cleaning and treating agent, and the third cleaning and treating agent is brought into contact with the surface in the active state to deposit the metal on the surface to form a metal coating. This is a cleaning and treating method for an object to be treated having a coating forming step.

[0012] The chlorine compound is hydrogen chloride, chloric acid, calcium chloride, sodium chloride, or a mixture thereof as described in claim 4, and the content thereof in the first cleaning and treating agent is preferably 0.05% by weight or more and less than 3.0% by weight. The nitrate compound is potassium nitrate, ammonium nitrate, calcium nitrate, sodium nitrate, or a mixture thereof as described in claim 5, and the content thereof in the first cleaning and treating agent is preferably 1.0% by weight or more and less than 15.0% by weight. The phosphoric acid compound is phosphoric acid, polyphosphoric acid, metaphosphoric acid, ultraphosphoric acid, phosphorous acid, diphosphorus pentoxide, hypophosphorous acid, or a mixture thereof as described in claim 6, and the content thereof in the first cleaning and treating agent is preferably 2.0% by weight or more and less than 38.0% by weight.

[0013] The metal is preferably at least one selected from gold (Au), silver (Ag), platinum (Pt), palladium (Pd), rhodium (Rh), ruthenium (Ru), and copper (Cu) as described in claim 7. The complex-forming component is preferably any one or more selected from gallic acid, pyrogallol, and tannic acid as described in claim 8. The reducing agent is preferably any one or more selected from malic acid, citric acid, tartaric acid, magnesium sulfate, ascorbic acid, sodium sulfate, and calcium carbonate as described in claim 9.

[0014] As described in claim 10, a plurality of types of the second cleaning and treating agents in which different metals are dissolved may be prepared, and by sequentially bringing these into contact with the surface, a plurality of metal films made of different metals may be formed on the surface of the object to be treated. In this case, as described in claim 11, the plurality of metal films may be gradually dissolved by mixing a decomposing agent that decomposes the metal film in the water. As described in claim 12, the decomposing agent is preferably a mixture composed of a chlorine compound, a nitrate compound, a phosphate compound, and the reducing agent.

[0015] The present invention can be widely applied to any object to be treated that may come into contact with water, and as described in claim 13, it can also be applied to medical instruments. The green space spraying agent of the present invention, as described in claim 14, is mainly composed of a generating agent produced by the method for treating the object to be treated described above, and it can be used as it is. However, for example, after adding adjusting water that relaxes and corrects the non-uniformity of the concentration, it can be directly sprayed on the green space after being diluted 100 to 1000 times with water according to the type of plants to be grown.

Advantages of the Invention

[0016] Since each cleaning / treating agent used in the method of the present invention has high detergency, it can effectively remove dirt, corrosion, rust, deposits, miscellaneous bacteria, etc. on the object to be treated such as pipes. In addition, by dissolving functional components with high corrosion resistance, antibacterial properties, and thermal conductivity, such as metals like gold, silver, and copper, these metals cover the surface of the object to be treated where water contacts, and it is possible to suppress the generation of rust, the adhesion of impurities, the propagation of miscellaneous bacteria, etc. Moreover, since the film formed by gold, silver, copper, or a mixture thereof shows a hydrophilic state, it is possible to suppress the reattachment of dirt by the self-cleaning action. Furthermore, since metals such as gold, silver, and copper have high thermal conductivity, by using them in a cooling tower or a heat exchanger, which is a facility having a part such as a heat exchanger as a surface in contact with water, the efficiency of heat exchange can be increased.

[0017] Also, from the perspective of the variable film, a decomposing agent containing a reducing component is added to the water in contact with the object to be treated at an appropriate concentration, so that the film surface gradually decomposes over a preset period of time, the metal on the film surface dissolves and ionizes, and it can always be updated to a new and active film to form a new surface. This can prevent the deposition and adhesion of dirt and the like, and can also remove the dirt and the like that have started to adhere by splashing or contact, and always keep the surface clean. Therefore, in equipment such as a heat exchanger where the metal surface is part of the equipment, a stable cooling effect can be maintained. Furthermore, the surface of the film is roughened by the decomposing agent, so that the contact area between the water such as cooling water and the film surface increases, and the exchange efficiency of cooling, heat exchange, etc. can be improved.

[0018] In addition, since the cleaning and treating agent used in the cleaning and treating method of the present invention is composed of natural components, it can not only be sprayed directly on the green space just by diluting it with water, but also contains components that promote the growth of plants. Therefore, the function as an auxiliary for plant growth can also be expected. In this sense, the cleaning and treating method of the present invention can be regarded as a method for producing such a green space spraying agent.

Best Mode for Carrying Out the Invention

[0019] Hereinafter, preferred embodiments of the present invention will be described in detail. [Object to be Treated] In the present invention, the "object to be treated that comes into contact with water" widely includes objects to be treated that may come into contact with water. Such as equipment where the surface in contact with water in a cooling tower, heat exchanger, etc. is configured with a part of a heat exchanger, etc. In addition to the object to be treated that is constantly in contact with water due to the constant flow of water, it also includes pipes such as drain pipes and water supply pipes where water flows intermittently, and other objects to be treated that are temporarily in contact with water as needed for cooling, cleaning, etc. (various devices and apparatuses, substrates, medical instruments, etc.). Also, its form is not limited to tubular ones, but includes various forms such as gutter-shaped ones, vessel-shaped ones, rod-shaped ones, plate-shaped ones, etc. that may come into contact with water. In the following embodiments, the object to be treated is provided in equipment such as a cooling tower or a heat exchanger, and an example of equipment (such as pipes) through which cooling water as "water" flows will be described.

[0020] [First cleaning and treatment agent] The first cleaning and treatment agent is for peeling off and flushing away scale, rust, miscellaneous bacteria, mold, putrefied substances, and other dirt (hereinafter collectively referred to as "adhered substances") adhering to the surface inside the equipment from the surface inside the equipment, and for activating the said surface. In this embodiment, (A) a chlorine compound, (B) a nitrate compound, and (C) a phosphate compound are added to the cooling water flowing inside the equipment to improve the said cooling water into a first cleaning and treatment agent having a cleaning and activation function.

[0021] (A) As the chlorine compound, (B) the nitrate compound, and (C) the phosphate compound, those which do not exceed an amount showing ecological harmfulness may be used, and for example, they can be selected from those specified as "food additives" by the Ministry of Health, Labour and Welfare.

[0022] [Chlorine compound] (A) Examples of the chlorine compound include hydrogen chloride, chloric acid, calcium chloride, sodium chloride, and a mixture of one or more of these. As the amount of the chlorine compound contained in the first cleaning and treatment agent, 0.05% by weight or more and less than 3.0% by weight is preferable.

[0023] [Nitrate compound] (B) Examples of the nitrate compound include potassium nitrate, ammonium nitrate, calcium nitrate, sodium nitrate, and a mixture of one or more of these. As the amount of the nitrate compound contained in the first cleaning and treatment agent, 1.0% by weight or more and less than 15.0% by weight is preferable.

[0024] [Phosphate compound] (C) Examples of the phosphate compound include phosphoric acid, polyphosphoric acid, metaphosphoric acid, ultraphosphoric acid, phosphorous acid, diphosphorus pentoxide, hypophosphorous acid, and a mixture of one or more of these. As the amount of the phosphate compound contained in the first cleaning and treatment agent, 2.0% by weight or more and less than 38.0% by weight is preferable.

[0025] [Second cleaning / treating agent] The second cleaning / treating agent is for maintaining the active state of the surface of the object to be treated activated by the first cleaning / treating agent. To the first cleaning / treating agent used in the cleaning / activation step using the first cleaning / treating agent, a complex-forming component that forms a complex with the metal ions on the surface of the activated object to be treated is added to improve the first cleaning / treating agent into a second cleaning / treating agent. The complex-forming component is preferably any one or more selected from gallic acid, pyrogallol, and tannic acid, or a mixture of a plurality of them. These are natural components and are harmless to humans and nature. The amount of the complex-forming component contained in the second cleaning / treating agent is preferably in the range of 0.3% by weight or more and less than 5% by weight.

[0026] [Third cleaning / treating agent] The third cleaning / treating agent is for forming a metal film on the surface of the object to be treated whose active state is maintained by the second cleaning / treating agent. To the second cleaning / treating agent used in the activation maintenance step, one or more kinds of metals are added and dissolved. The metal to be dissolved is preferably at least any one or more selected from gold (Au), silver (Ag), platinum (Pt), palladium (Pd), rhodium (Rh), ruthenium (Ru), and copper (Cu). These metals are excellent in corrosion resistance, antibacterial property, and thermal conductivity, but in use, the amount does not exceed the amount showing ecological harmfulness. In this embodiment, the amount of one or more kinds of metals contained in the third cleaning / treating agent is the maximum amount of each metal that can be dissolved in the third cleaning / treating agent in a saturated state.

[0027] [Regarding the dissolution of gold and silver in the third cleaning / treating agent] In the cleaning / treating agent of the present invention, it is possible to dissolve metals such as gold, silver, and copper. Hereinafter, examples of dissolving gold and silver are shown. (1) Dissolution of gold (A) Chlorine compounds, (B) nitrate compounds, and (C) phosphate compounds were used in the experiment on the dissolution of gold and silver in a solution under the following conditions by the inventor. 100 g in total of 10 wt% sodium nitrate, 1 wt% sodium chloride, and 35.6 wt% phosphoric acid were placed in a beaker, and a 1 / 4 square gold foil was put into the beaker and stirred at a temperature of 15 °C ± 2 °C. The gold foil began to dissolve gradually immediately after being put in, and it took about 48 hours until it completely dissolved. After that, another 1 / 4 square gold foil was added and stirred at the same temperature. As a result, the gold foil dissolved in 24 hours, which was shorter than the time for the first 1 / 4 square gold foil to completely dissolve. Another 1 / 4 square gold foil was added and the experiment was repeated. However, each time the experiment was repeated for the third and fourth times, the dissolution time was shortened. (2) Dissolution of silver When a 1 / 4 square silver foil was put into 100 g of a mixed solution of 11 wt% sodium nitrate and 39 wt% phosphoric acid, the 1 / 4 square silver foil completely dissolved and ionized in 10 minutes. When another 1 / 4 square silver foil was put into the mixed solution in which the 1 / 4 square silver foil had dissolved, the dissolution speed was shortened from 10 minutes to 9 minutes. Similar to the case of gold, the more it was dissolved, the shorter the time required for dissolution became. (3) Experimental results Photograph of the solution in which gold dissolved JPEG2025083171000002.jpg3529 Photograph of the solution in which silver dissolved JPEG2025083171000003.jpg3629

[0028] [Addition of reducing agent] After dissolving metals such as gold and silver, a reducing agent with a reducing effect is added to improve the second cleaning and treatment agent into a third cleaning and treatment agent. The reducing agent is for depositing a metal on the surface pretreated for film formation by the third cleaning and treating agent to form a metal film. As the reducing agent, any one or more selected from malic acid, citric acid, tartaric acid, magnesium sulfate, ascorbic acid, sodium sulfate, calcium oxide, and calcium carbonate can be used. These reducing agents use natural ingredients. In addition, a stabilizer for stabilizing dissolved metal ions may be added to the third cleaning and treating agent. Examples of the stabilizer include alum.

[0029] [Other Additives] For the cleaning and treating agent, various additives such as various surfactants, accelerators, and inhibitors for preventing excessive etching of the surface of the object to be treated may be added to improve the cleaning ability and add functions to the film layer. Further, as an additive for adding functions, it is preferably a natural ingredient and preferably contains 17 kinds of nutrients (essential elements) essential for plant growth (starting with the three major elements of nitrogen (N), phosphorus (P), and potassium (K), calcium (Ca), oxygen (O), hydrogen (H), carbon (C), magnesium (Mg), sulfur (S), iron (Fe), manganese (Mn), boron (B), zinc (Zn), molybdenum (Mo), copper (Cu), chlorine (Cl), nickel (Ni)).

[0030] [Explanation of Method] A preferred embodiment of the method of the present invention using the above cleaning and treating agent will be described below. First, (A) a chlorine compound, (B) a nitrate compound, and (C) a phosphate compound are added to the cooling water remaining in the equipment to improve the cooling water into first cleaning and treating water. Since the amount of the cooling water can be obtained by calculating the volume from the inner diameter and length of the equipment, each component (A), (B), and (C) is weighed and added to the cooling water so that each component is contained in the above ratio with respect to the obtained amount of the cooling water. The thus-improved first cleaning and treatment agent is circulated in the pipeline at a constant temperature for a constant period of time (e.g., 40°C for 30 minutes) to remove deposits and the like adhering to the surface in contact with water in the equipment, and to activate the surface (cleaning and activation step).

[0031] Next, a component for forming a complex that forms a complex with the metal ions on the activated surface is added to the first cleaning and treatment agent in the equipment to improve the first cleaning and treatment agent into a second cleaning and treatment agent. Then, this second cleaning and treatment agent is circulated in the equipment at a constant temperature for a constant period of time (e.g., 5 minutes at 40°C) to maintain the activated state of the surface of the object to be treated (activation maintenance step). After that, one or more kinds of metals are dissolved in the second cleaning and treatment agent in the equipment. After dissolving the metal, a reducing agent is added to improve the second cleaning and treatment agent into a third cleaning and treatment agent. Then, this third cleaning and treatment agent is circulated in the equipment at a constant temperature for a constant period of time (e.g., 40°C, 30 minutes) to deposit metal on the activated surface and form a metal film (metal film forming step).

[0032] [Second Embodiment] In this second embodiment, in the metal film forming step, first, a metal (e.g., gold) which is a first metal is dissolved in the second cleaning and treatment agent in the equipment, a reducing agent is added to improve it into a third cleaning and treatment agent, and after forming a gold film with this third cleaning and treatment agent, a second metal (e.g., silver) is dissolved in the third cleaning and treatment agent, and a silver film layer is formed on the gold film layer in the same procedure. In this way, a plurality of film layers made of different metals are formed on the surface.

[0033] [Third Embodiment] In this third embodiment, when a film made of a plurality of metals is formed on the surface in the equipment by the second cleaning and treatment agent in which a plurality of metals are dissolved, or when a plurality of film layers made of the same or different metals are formed as in the second embodiment, a decomposing agent having a function of decomposing the metal of the film is added to the cooling water flowing in the equipment during the normal operation of the cooling tower or heat exchanger. If the concentration of the decomposing agent in the cooling water is high, the metal coating will decompose prematurely. Therefore, by adjusting the concentration, the coating will decompose gradually over a certain period (for example, from several weeks to half a year). By adding such a decomposing agent to the cooling water, the surface of the coating is always maintained in a new state, and the adhesion of deposits can be suppressed over a long period. Also, since the silver coating is formed while incorporating impurity elements such as iron ions contained in the cooling water at the stage where the coating is formed, when the decomposing agent comes into contact with the surface of the silver coating containing this impurity element, elements with a higher ionization tendency than silver will be selectively dissolved. As a result, the coated surface becomes a roughened surface. In this way, the surface area of the coating increases, the contact area with the cooling water becomes larger, and the efficiency of heat exchange can be enhanced. As the decomposing agent, there is no particular limitation on the type as long as it is a natural component that can decompose each coating layer formed of metal. However, chlorine compounds, nitric acid compounds, phosphoric acid compounds constituting the first cleaning / treating agent, and the reducing agent can be used.

[0034] [Green area spraying agent] In the first to third embodiments, after forming the metal coating, the third cleaning / treating agent can be recovered and used as it is. However, when adding adjustment water to relax and correct the non-uniformity of the concentration, for example, depending on the type of plants for which the water used in the process such as rinsing water is used to grow, it is diluted about 100 to 1000 times, preferably about 500 times to produce a green area spraying agent. The third cleaning / treating agent is composed of natural components and also contains components such as phosphoric acid that promote the growth of plants. Therefore, even if the green area spraying agent obtained by diluting the third cleaning / treating agent is sprayed on the green area, there is no risk of affecting the environment, and it is also possible to expect the promotion of the growth of the green area.

[0035] Hereinafter, examples of the cleaning / treating method of the present invention will be described. [Example 1 of cleaning / treating method] (1) Object to be treated A pipe made of SUS304 with a diameter of φ30 mm and a length of 100 mm (2) First cleaning / treating agent The following components were added to 100 parts of water at the following ratios. Sodium chloride 2% by weight Sodium nitrate 10% by weight Phosphoric acid 35.6% by weight (3) Second cleaning / treating agent 0.5% by weight of pyrogallol was added to the first cleaning / treating agent as a complex-forming component (activation-maintaining component). (4) Third cleaning / treating agent The following metals were added to the second cleaning / treating agent as film-forming components. 1 / 2 sheet (43 mm square, 0.01 g) of gold (24-karat gold foil manufactured by Yong Bo Co., Ltd.) 1 sheet (60 mm square, 0.02 g) of silver (silver foil manufactured by Yong Bo Co., Ltd.) The following components were added as reducing agents. Sodium sulfate 8% by weight Tartaric acid 2% by weight (5) Experimental results (see Figure 1) (i): Pipe (object to be treated) before cleaning / treating (ii): One contacted with the first cleaning / treating agent (iii): One contacted with the second cleaning / treating agent (iv): One contacted with the third cleaning / treating agent

[0036] [Example 2 of cleaning / treating method] (1) Object to be treated Piping of SUS304 with a diameter of φ30 mm and a length of 100 mm (2) First cleaning / treating agent The following components were added to 100 parts of water at the following ratios. Sodium chloride 2% by weight Sodium nitrate 10% by weight Phosphoric acid 35.6% by weight (3) Second cleaning / treating agent 0.5% by weight of pyrogallol was added to the first cleaning / treating agent as a complex-forming component (activation-maintaining component). (4) Third cleaning / treating agent The following metals were added as film-forming components to the second cleaning / treating agent. 1 / 2 sheet (43 mm square, 0.01 g) of gold (KINNO 24-karat gold foil manufactured by Yong Bo Co.) 1 sheet (60 mm square, 0.02 g) of silver (silver foil manufactured by Yong Bo Co.) 4 sheets of copper (C1020) (each 0.01 mm thick, 10 mm square) The following components were added as reducing agents. Sodium sulfate 8% by weight Tartaric acid 2% by weight (5) Experimental results (see Figure 1) (i): Pipe (object to be treated) before cleaning / treating (ii): Object contacted with the first cleaning / treating agent (iii): Object contacted with the second cleaning / treating agent (v): Object contacted with the third cleaning / treating agent

[0037] [Example 3 of cleaning / treating method] (1) Object to be treated Sheet material of SUS304, 30 mm square (2) First cleaning / treating agent The following components were added to 100 parts of water at the following ratios. Sodium chloride 1% by weight Sodium nitrate 10% by weight Phosphoric acid 35.6% by weight (3) Second cleaning / treating agent 0.5% by weight of tannic acid was added as a complex-forming component (activation-maintaining component) to the first cleaning / treating agent. (4) Third cleaning / treating agent The following metals were added as film-forming components to the second cleaning / treating agent. 1 / 4 sheet (21.5 mm square, 0.005 g) of gold (KINNO 24-karat gold foil manufactured by Yong Bo Co.) 1 sheet (60 mm square, 0.02 g) of silver (silver foil manufactured by Yong Bo Co.) The following components were added as reducing agents. Magnesium sulfate 3% by weight 2% by weight of tartaric acid (5) Experimental results (see Figure 2) (vi): Pipe before cleaning and treatment (object to be treated) (vii): One contacted with the first cleaning and treatment agent (viii): One contacted with the second cleaning and treatment agent (ix): One contacted with the third cleaning and treatment agent

[0038] [Example 4 of the cleaning and treatment method] (1) Object to be treated Copper PCB substrate, 50 mm square (2) First cleaning and treatment agent The following components were added to 100 parts of water at the following ratios. 0.4% by weight of sodium chloride 5% by weight of sodium nitrate 8% by weight of phosphoric acid (3) Second cleaning and treatment agent 0.5% by weight of pyrogallol was added to the first cleaning and treatment agent as a complex-forming component (activation-maintaining component). (4) Third cleaning and treatment agent The following metals were added to the second cleaning and treatment agent as film-forming components. 1 / 2 sheet (43 mm square, 0.01 g) of gold (KINNO 24-karat gold foil manufactured by Yong Bo) 1 sheet (60 mm square, 0.02 g) of silver (silver foil manufactured by Yong Bo) 2 sheets of copper (C1020) (each 0.01 mm thick, 10 mm square) The following components were added as reducing agents. 4% by weight of sodium sulfate 2.5% by weight of tartaric acid 0.3% by weight of magnesium sulfate (5) Experimental results (see Figure 3) (x): Pipe before cleaning and treatment (object to be treated) (xi): One contacted with the first cleaning and treatment agent (xii): One contacted with the second cleaning and treatment agent (xiii): One contacted with the third cleaning and treatment agent

[0039] [Example 1 of Green Space Spraying] Phosphoric acid, sodium nitrate, and sodium chloride were mixed as the first cleaning and treatment agent in the cooling water inside the pipes of the heat exchanger, and the cooling water was improved with the first cleaning and treatment agent. This first cleaning and treatment agent was circulated inside the pipes for cleaning and activation. After that, tannic acid was mixed into the first cleaning and treatment agent inside the pipes, and the first cleaning and treatment agent was improved to a second cleaning and treatment agent. This second cleaning and treatment agent was circulated inside the pipes to maintain activation. After that, gold and silver were dissolved in the second cleaning and treatment agent inside the pipes, and then alum was used as a stabilizer, and citric acid and ascorbic acid were mixed as reducing agents to improve it to a third cleaning and treatment agent. This third cleaning and treatment agent was circulated inside the pipes to form a metal coating on the surface inside the pipes. [Example 2 of Green Space Spraying] When improving the second cleaning and treatment agent to the third cleaning and treatment agent, it is the same as Example 1 except that potassium chloride is added as a reducing agent. [Example 3 of Green Space Spraying] When improving the second cleaning and treatment agent to the third cleaning and treatment agent, it is the same as Example 1 except that calcium oxide is added as a reducing agent. All the third cleaning and treatment agents used in Examples 1, 2, and 3 were recovered, diluted 500 times with water to produce a green space spraying agent, and applied to kale.

[0040] [Example 4 of Green Space Spraying] Sodium nitrate, sodium chloride, phosphoric acid, and potassium metaphosphate were added to the cooling water, improved to the first cleaning and treatment agent, and circulated inside the pipes for cleaning and activation. After that, tannic acid was mixed into the first cleaning and treatment agent inside the pipes, and the first cleaning and treatment agent was improved to a second cleaning and treatment agent. This second cleaning and treatment agent was circulated inside the pipes to maintain activation. After dissolving 1 / 8 sheet of gold and 1 / 4 sheet of silver per 100 g of the second cleaning and treatment agent, potassium alum was added as a stabilizer, and ascorbic acid and sodium sulfate were added as reducing agents to improve it into a third cleaning and treatment agent. This third cleaning and treatment agent was circulated in the pipe to form a metal film on the surface inside the pipe. [Example 5 of green space spraying] It was the same as Example 4 except that potassium metaphosphate contained in the first cleaning and treatment agent was not added. All the third cleaning and treatment agents used in Examples 4 and 5 were recovered, diluted 500 times with water to produce a green space spraying agent, and applied to Komatsuna.

[0041] [Example 6 of green space spraying] Sodium nitrate, sodium chloride, phosphoric acid, and potassium metaphosphate were added to the cooling water to improve it into a first cleaning and treatment agent, and it was circulated inside the pipe for cleaning and activation. After that, tannic acid was mixed into the first cleaning and treatment agent inside the pipe to improve the first cleaning and treatment agent into a second cleaning and treatment agent. After that, the second cleaning and treatment agent was circulated in the pipe to maintain activation. After dissolving 1 / 2 sheet of gold and 1 sheet of silver in the second cleaning and treatment agent, ascorbic acid and calcium oxide were added as reducing agents to improve it into a third cleaning and treatment agent. This third cleaning and treatment agent was circulated in the pipe to form a metal film on the surface inside the pipe. All the third cleaning and treatment agents used were recovered, diluted 500 times with water, and applied to Selaginella.

[0042] [Comparative example] For each of kale, Komatsuna, and Selaginella, the above examples were used, and the examples where only water was given were set as Comparative Example 1, Comparative Example 2, and Comparative Example 4. Regarding Komatsuna, since soil that does not grow Komatsuna was used, it did not grow with only water, and a commercially available fertilizer was given. This example was set as Comparative Example 3. Regarding kale, the growth state was observed at 30 days, 60 days, and 70 days after vegetation. Regarding Komatsuna and Selaginella, the growth state was observed at 30 days and 60 days.

[0043] [Experimental results] The results are shown in the following table. TIFF2025083171000004.tif110144 Examples 1 to 6 all use a third cleaning and treatment agent recovered after performing cleaning / activation treatment, activation maintenance, and metal film formation treatment, diluted approximately 500 times with water. However, in each example, plant growth equivalent to or better than that in the case of only water was observed, and insect damage was observed in each plant. From this, it was confirmed that the green space spraying agent of the present invention is harmless.

Industrial applicability

[0044] The present invention can be widely applied to cleaning and film formation of cooling pipelines made of steel, copper, stainless steel, titanium, PVC resin, etc. used in heat exchangers, cooling towers, etc., as well as, for example, screen plate cleaning of printing machines, measures for roller glazing and accuracy maintenance, and cooling circuits of dry & wet etching devices, semiconductor manufacturing devices, process chamber bodies, vacuum pumps, high-frequency power supplies, control circuits, etc. Furthermore, it can also be applied to cleaning and film formation of medical instruments such as surgical instruments.

Brief description of the drawings

[0045]

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Claims

1. In a method for cleaning and treating an object to be treated that comes into contact with water, a natural component for cleaning and activating the surface of the object to be treated is added to the water to improve the water into a first cleaning and treatment agent, and by bringing the first cleaning and treatment agent into contact with the surface of the object to be treated, a cleaning and activation step of cleaning and activating the surface of the object to be treated; a component for maintaining the activated state of the surface, which is a natural component, is added to the first cleaning and treatment agent to improve the water into a second cleaning and treatment agent, and by bringing the second cleaning and treatment agent into contact with the surface of the object to be treated, an activation maintenance step of maintaining the activated state of the surface of the object to be treated; a component for forming a film having a predetermined function, which is a natural component, is added to the second cleaning and treatment agent to improve the water into a third cleaning and treatment agent, and the third cleaning and treatment agent is brought into contact with the surface in an activated state to form the film on the surface, a film forming step; A method for cleaning and treating an object to be treated, characterized by comprising the above steps.

2. A natural component decomposing agent for decomposing the film is added to the water, and by bringing the water containing the decomposing agent into contact with the surface on which the film is formed, the film is decomposed within a preset period. The method for cleaning and treating an object to be treated according to Claim 1.

3. (A)A chlorine compound, (B)a nitrate compound, and (C)a phosphate compound are added to the water to improve the water into the first cleaning and treatment agent, and by bringing the first cleaning and treatment agent into contact with the surface of the object to be treated, the cleaning and activation step of cleaning and activating the surface of the object to be treated; a complex forming component for forming a complex with the metal ions on the activated surface is added to the first cleaning and treatment agent in the cleaning and activation step to improve the first cleaning and treatment agent into the second cleaning and treatment agent, and by bringing the second cleaning and treatment agent into contact with the surface of the object to be treated, the activation maintenance step of maintaining the activated state of the surface of the object to be treated; after dissolving one or more kinds of metals in the second cleaning and treatment agent in the activation maintenance step, a reducing agent having a reducing action is added to improve the second cleaning and treatment agent into the third cleaning and treatment agent, and the third cleaning and treatment agent is brought into contact with the surface in an activated state to deposit the metal on the surface to form a metal film, the film forming step; A method for cleaning and treating an object to be treated according to Claim 1 or 2, characterized by comprising the above steps.

4. The chlorine compound is hydrogen chloride, chloric acid, calcium chloride, sodium chloride, or a mixture thereof, and the content in the first cleaning / processing agent is 0.05% by weight or more and less than 3.0% by weight. The method for cleaning / processing an object to be treated according to claim 3, characterized in that.

5. The nitrate compound is potassium nitrate, sodium nitrate, or a mixture thereof, and the content in the first cleaning / processing agent is 1.0% by weight or more and less than 15.0% by weight. The method for cleaning / processing an object to be treated according to claim 3, characterized in that.

6. The phosphate compound is phosphoric acid, potassium polyphosphate, sodium polyphosphate, sodium metaphosphate, potassium metaphosphate, tripotassium phosphate, trimagnesium phosphate, trisodium phosphate, or a mixture thereof, and the content in the first cleaning / processing agent is 2.0% by weight or more and less than 38.0% by weight. The method for cleaning / processing an object to be treated according to claim 3, characterized in that.

7. The metal is at least one selected from gold (Au), silver (Ag), platinum (Pt), palladium (Pd), rhodium (Rh), ruthenium (Ru), and copper (Cu). The method for cleaning / processing an object to be treated according to claim 3, characterized in that.

8. The component for forming a complex is any one or more selected from gallic acid, pyrogallol, and tannic acid. The method for cleaning / processing an object to be treated according to claim 3, characterized in that.

9. The reducing agent is any one or more selected from malic acid, citric acid, tartaric acid, magnesium sulfate, ascorbic acid, sodium sulfate, potassium chloride, tetrapotassium pyrophosphate, calcium oxide, sorbitol, and calcium carbonate. The method for cleaning / processing an object to be treated according to claim 3, characterized in that.

10. Prepare a plurality of types of the second cleaning / processing agent in which different metals are dissolved, and sequentially bring these into contact with the surface to form a plurality of metal films made of different metals on the surface of the object to be treated. The method for cleaning / processing an object to be treated according to claim 3, characterized in that.

11. The plurality of metal films are decomposed within a preset period by mixing a decomposing agent that decomposes the metal film into the water. The method for cleaning / processing an object to be treated according to claim 10, characterized in that.

12. The cleaning and treatment method of the object to be treated according to claim 11, wherein the decomposing agent is a mixture comprising a chlorine compound, a nitric acid compound, a phosphoric acid compound, and the reducing agent.

13. The cleaning and treatment method of the object to be treated according to any one of claims 1 to 3, wherein the object to be treated is a medical instrument.

14. A green space spraying agent characterized by containing, as a main component, a generation agent generated by the cleaning and treatment method of the object to be treated according to any one of claims 1 to 13.

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