JP5535518B2 - Removal method of slime and aqueous slime remover preparation kit - Google Patents

Description

  The present invention relates to a method for peeling and removing slime adhering to a solid surface such as a drain pipe. The present invention also relates to a preparation kit for an aqueous slime remover that can be advantageously used for stripping removal of slime.

  It is easy for slime to occur on the inner surfaces of drainage pipes around water such as kitchens, bathrooms, and washrooms. Slimy not only detracts from aesthetics but also causes odors. For this reason, it is necessary to peel and remove the slime adhering to the drain pipe.

  The slime is a viscous substance containing bacteria that have grown by using food residues and human waste as nutrients, and bacterial excrement. Excrements of bacteria (particularly Pseudomonas aeruginosa) include polysaccharides such as calcium alginate, proteins, and the like. In order to peel and remove such slime from the drain pipe, it is effective to decompose and remove proteins or polysaccharides contained in the slime.

  In Patent Document 1, as a slime removing agent having excellent proteolytic ability, an alkali metal hypochlorite is used as a main base material, and at least selected from N-acyl sarcosine salts, trialkylamine oxides, or alkyl sulfonates. An aqueous slime remover containing a type of surfactant, an alkali metal hydroxide salt, and water is disclosed. This aqueous slime remover removes slime by spraying directly on the slime.

In Patent Document 2, as a solid anti-swelling agent containing calcium oxide as an active ingredient, TiO ₂ , Fe ₂ O ₃ , FeO ₂ , CuO, ZnO, calcium oxide or calcium hydroxide in an amount equivalent to calcium oxide, An anti-slicking agent obtained by firing a mixture containing 1 to 30% by mass of a binder selected from the group consisting of MgO, SiO ₂ , Al ₂ O ₃ or a mixture thereof at a temperature of 1200 ° C. or higher is disclosed. . This solid anti-slicking agent is produced from the anti-slicking agent in contact with the drainage by being placed in a drainage channel such as a sink drainage port as it is or in a container with a hole. Occurrence of slimming is prevented by bringing an alkaline aqueous solution containing calcium into contact with the slime. According to Patent Document 2, the binder has an action of preventing rapid hydration of calcium oxide and improving the shape stability of the anti-slime agent in water.

JP 2003-55698 A JP 2002-241207 A

  The aqueous slime removing agent having an alkali metal hypochlorite salt disclosed in Patent Document 1 as an active ingredient can be directly sprayed on the drainage pipe to which the slime adheres, and has an advantage of high immediate effect. is there. However, the slime removing agent containing an alkali metal hypochlorite has a problem that the effect of removing the slime is low and chlorine gas may be generated during use.

  On the other hand, since the solid anti-slicking agent containing calcium oxide as an active ingredient disclosed in Patent Document 2 is dissolved little by little by contact with wastewater, there is an advantage that the persistence of the slime removing effect is high. However, since the anti-slime agent of Patent Document 2 has a large amount of calcium oxide of 70 to 99% by mass, the water generated from this is a saturated aqueous solution of calcium hydroxide (pH = 12.6). It becomes a near strong alkaline aqueous solution. Calcium dissolved in this strongly alkaline aqueous solution reacts with carbon dioxide in the air to form calcium carbonate and precipitates on the inner wall surface of the drain pipe, preventing the smooth flow of water. It is not preferable to flow the alkaline aqueous solution dissolved in the drain pipe over a long period of time.

  Accordingly, an object of the present invention is to provide an aqueous slime removing agent that does not generate chlorine gas and has a lower pH and calcium content than an alkaline aqueous solution produced from a conventional antiswelling agent mainly composed of calcium oxide. Another object of the present invention is to provide a method that can efficiently remove slime. Another object of the present invention is to provide a preparation kit for an aqueous slime removal agent that can easily prepare an aqueous slime removal agent that does not generate chlorine gas and can efficiently remove the slime. There is also.

  The inventor of the present invention has prepared an alkaline aqueous solution containing magnesium ions and magnesium oxide and / or magnesium hydroxide produced by bringing water into contact with a granular material containing particles containing magnesium oxide and / or magnesium hydroxide as an active ingredient. The aqueous alkaline suspension in which the particles are suspended has a high slime peel-off effect even when the pH is in the range of 10.0 to 11.5 and is lower than the pH of the saturated calcium hydroxide solution. It was found to show. This is because the magnesium ion contained in the alkaline aqueous solution replaces calcium of calcium alginate, which is one of the viscous components of slime, to produce magnesium alginate that is easily soluble in water, and this magnesium alginate is dissolved in water. This is considered to be because the viscosity of slime is reduced by being removed.

  Therefore, the present invention contains an alkaline aqueous solution containing magnesium ions or an aqueous alkaline suspension in which particles of magnesium oxide and / or magnesium hydroxide are suspended, containing bacteria and bacterial excrement on the tube wall. The present invention lies in a method for removing slime from a drainage pipe to which slime adheres, characterized by being sprayed around the opening of the drainage pipe to which slime adheres.

  The present invention also includes bacteria and bacterial excrement, including a container equipped with a sprayer that can be attached to and detached from the opening, and a granular material containing particles containing magnesium oxide and / or magnesium hydroxide as an active ingredient. There is also an aqueous slime preparation preparation kit for removing slime.

Preferred embodiments of the aqueous slime removing agent preparation kit of the present invention are as follows.
(1) The average particle diameter of the particles of the granular material is in the range of 0.1 to 50 mm.
(2) The particles containing magnesium oxide and / or magnesium hydroxide contain calcium oxide and / or calcium hydroxide in an amount in the range of 0.1 to 30.0% by mass.
(3) Furthermore, the granular material contains particles containing calcium oxide and / or calcium hydroxide.

  By using the slime removing method of the present invention, it is possible to efficiently remove the slime from the inner surface of the drain pipe to which the slime adheres. Moreover, by using the preparation kit for aqueous slime remover of the present invention, an alkaline aqueous solution containing magnesium ions useful as an aqueous slime remover can be easily prepared.

It is a partial notch front view of an example of the preparation kit of the aqueous | water-based slime removal agent according to this invention.

  An alkaline aqueous solution containing magnesium ions or an aqueous alkaline suspension in which magnesium oxide and / or magnesium hydroxide is suspended used in the slime removing method of the present invention is a container equipped with a sprayer that can be attached to and detached from an opening; Magnesium-containing particles containing magnesium oxide and / or magnesium hydroxide can be prepared by using an aqueous stickiness remover preparation kit containing particulates containing an active ingredient.

  FIG. 1 is a partially cutaway front view of an example of a preparation kit for an aqueous slime remover according to the present invention.

  In FIG. 1, a preparation kit for an aqueous slime remover includes a container 1, a sprayer 2 that is detachably attached to the upper opening of the container 1, and magnesium oxide and / or magnesium hydroxide contained in the container 1. It is comprised from the granular material containing the magnesium containing particle | grains 3 containing. The alkaline aqueous solution or alkaline aqueous suspension containing magnesium ions useful as an aqueous slime remover is prepared by removing the sprayer 2 from the container 1 and introducing water from the upper opening of the container 1 to obtain magnesium-containing particles 3 and water. Can be prepared by contacting them. The alkaline aqueous solution or alkaline aqueous suspension containing magnesium ions prepared in the container 1 is again attached to the container 1 and sprayed by the sprayer 2. The container may be a normal bottle not provided with a sprayer.

  Tap water can be used as the water charged into the container 1. A thickener or a surfactant may be added to the water in order to improve the wettability of the alkaline aqueous solution containing magnesium ions and the alkaline aqueous suspension.

  The amount of magnesium oxide and / or magnesium hydroxide contained in the entire granule containing the magnesium-containing particles 3 is preferably 50.0% by mass or more, and is in the range of 60.0 to 98.0% by mass. Is more preferably in the range of 70.0 to 98.0% by mass, and particularly preferably in the range of 70.0 to 97.0% by mass.

  The granular material may contain calcium oxide and / or calcium hydroxide. Calcium oxide and calcium hydroxide are prepared by supplying alkali to an alkaline aqueous solution and an aqueous alkaline suspension produced by contact with water, and adjusting the pH of the alkaline aqueous solution and aqueous alkaline suspension containing magnesium ions to an aqueous magnesium hydroxide solution. It has the effect | action which raises the pH of the saturated solution of and raises a bactericidal effect. However, calcium reacts with carbon dioxide in the air to form calcium carbonate and precipitates on the inner wall surface of the drain pipe, which may hinder the flow of water. For this reason, the amount of calcium oxide and / or calcium hydroxide contained in the whole granular material is preferably in the range of 0.1 to 30.0% by mass, and in the range of 2.0 to 30.0% by mass. It is more preferable that it is in the range of 3.0 to 20.0% by mass.

  Examples of the magnesium-containing particles 3 constituting the granular material include magnesium oxide particles, magnesium hydroxide particles, composite particles composed of magnesium oxide and calcium oxide, and magnesium oxide and / or magnesium hydroxide and calcium oxide. Or the particle | grains of a mixture with calcium hydroxide can be mentioned. These magnesium-containing particles may be used alone or in combination of two or more. Further, calcium oxide particles and / or magnesium hydroxide particles may be added to the magnesium-containing particles.

  The magnesium oxide particles used in the present invention preferably have a magnesium oxide content of 80.0% by mass or more, and more preferably 90.0% by mass or more. Magnesium oxide particles can be produced by, for example, forming a magnesium compound powder that forms a magnesium oxide powder by heating, such as magnesium carbonate powder, magnesium hydroxide powder, and magnesium chloride powder, and then heating it.

  The magnesium hydroxide particles used in the present invention preferably have a magnesium oxide equivalent content of 55.0% by mass or more, and more preferably 62.0% by mass or more. Magnesium hydroxide particles can be obtained, for example, by pulverizing and classifying natural ore brucite (water talc) or by introducing an alkaline raw material such as lime milk into a magnesium-containing solution such as seawater, bitter juice, brine or the like. It can be produced by a method of forming magnesium hydroxide powder into granules.

  The composite particles composed of magnesium oxide and calcium oxide used in the present invention preferably have a magnesium oxide content of 50.0% by mass or more and a calcium oxide content of 0.1% by mass or more. The magnesium oxide content is more preferably in the range of 60.0 to 98.0% by mass, further preferably in the range of 70.0 to 98.0% by mass, and 70.0 to 97.0% by mass. % Is particularly preferable. The calcium oxide content is preferably 30.0% by mass or less, more preferably in the range of 0.1 to 30.0% by mass, and in the range of 2.0 to 30.0% by mass. Is more preferable, and it is particularly preferably in the range of 3.0 to 30.0% by mass. Part of the magnesium oxide and calcium oxide contained in the composite particles may be hydrated. The particles of the composite can be produced, for example, by firing dolomite. Instead of dolomite, uniaxial molding of a powder mixture in which magnesium oxide powder or magnesium compound powder that produces magnesium oxide powder by heating and calcium compound powder or calcium compound powder that produces calcium oxide powder by heating is mixed in a desired ratio It can be produced by molding into a granule using a molding machine such as a machine or a briquette machine, and then heating the resulting granular mixture at a temperature of 900 ° C. or higher. The firing temperature of the granular mixture is preferably in the range of 900 to 2100 ° C, more preferably in the range of 1200 ° C to 2100 ° C, and particularly preferably in the range of 1600 to 2000 ° C.

  The particles of the mixture of magnesium oxide and / or magnesium hydroxide and calcium oxide and / or calcium hydroxide used in the present invention have a magnesium oxide and / or magnesium hydroxide content of 50.0% by mass or more, and calcium oxide And / or it is preferable that the content rate of calcium hydroxide is 0.1 mass% or more. The content of magnesium oxide and / or magnesium hydroxide is more preferably in the range of 60.0 to 98.0% by mass, further preferably in the range of 70.0 to 98.0% by mass, 70 It is especially preferable that it is in the range of 0.0 to 97.0% by mass. The content of calcium oxide and / or calcium hydroxide is preferably 30.0% by mass or less, more preferably in the range of 0.1 to 30.0% by mass, and 2.0 to 30.0. More preferably in the range of mass%, particularly preferably in the range of 3.0 to 30.0 mass%. The particles of the mixture can be produced by mixing magnesium oxide powder and / or magnesium hydroxide powder and calcium oxide powder and / or calcium hydroxide powder and molding them into granules.

  The calcium oxide particles used in the present invention preferably have a calcium oxide content of 80.0% by mass or more, and more preferably 90.0% by mass or more. The calcium oxide particles can be produced by, for example, forming a calcium compound powder that forms calcium oxide powder by heating, such as calcium carbonate powder, calcium hydroxide powder, and calcium chloride powder, and then heating the powder.

  The calcium hydroxide particles used in the present invention preferably have a calcium oxide equivalent content of 60.0% by mass or more, and more preferably 68.0% by mass or more. The calcium hydroxide particles can be produced, for example, by forming calcium hydroxide powder into a granular shape.

  The shape of the particles constituting the granular material is not particularly limited, and may be any shape such as a spherical shape, a cylindrical shape, an almond shape, or a disk shape. The average particle diameter of the granular material is preferably in the range of 0.1 to 50 mm, and particularly preferably in the range of 0.5 to 20 mm.

  A small amount of an alkali metal hypochlorite, an aerobic bacterium, and an auxiliary component of an antibacterial agent can be blended with the granular material used in the present invention as long as the effects of the present invention are not impaired.

  The alkali metal hypochlorite has an action of degrading polysaccharides and proteins contained in the slime. Examples of the alkali metal hypochlorite include sodium hypochlorite and potassium hypochlorite.

  Aerobic bacteria have the effect of decomposing food residues and human wastes, which are nutrients for slime-forming bacteria, without producing off-flavors. Examples of aerobic bacteria include Bacillus subtilis and EM bacteria.

  The antibacterial agent has an action of suppressing the occurrence of slime by suppressing the growth of bacteria forming the slime. Examples of antibacterial agents include titanium oxide, copper and silver.

  These auxiliary components may be supported on a part or the whole of the surface of the magnesium-containing particles constituting the granular material, and the auxiliary component and the granular material may be integrated. It is preferable that the usage-amount of an auxiliary | assistant component is the quantity used as the range of 50: 50-99: 1 (magnesium containing particle | grains: auxiliary component) by mass ratio with a magnesium containing particle.

  In the present invention, slimming occurs in an alkaline aqueous solution containing magnesium ions generated by contact between magnesium-containing particles and water or an aqueous alkaline suspension in which magnesium oxide and / or magnesium hydroxide is suspended. By spraying around the opening of the drain pipe, peeling and removal of slime is performed. It is preferable to use it in a magnesium ion-containing alkaline aqueous solution. Examples of drainage pipes that tend to cause slimming include the drainage pipes of kitchens, washrooms, bathrooms, and washing machines. Examples of the periphery of the opening of the drain pipe include a sink in a kitchen or a washroom (including a triangular corner placed on the sink) and a bathroom washroom.

[Example 1]
(1) Manufacture of Magnesium Oxide Particles Seawater with a magnesium concentration of 1300 mg / L and lime milk with a concentration of 15% by mass, the molar ratio of magnesium in seawater and calcium in lime milk is 100: 90 (magnesium: calcium) Was added at a ratio to form a magnesium hydroxide slurry. The resulting magnesium hydroxide slurry is allowed to settle to precipitate magnesium hydroxide, the supernatant water is separated, and fresh water is added to prepare a magnesium hydroxide slurry to dissolve calcium in water. After removing the ions, the mixture was concentrated to prepare a magnesium hydroxide slurry having a concentration of 30% by mass.

  The magnesium hydroxide slurry having a concentration of 30% by mass prepared as described above is filtered to form a cake, and then dried until the water content becomes 5% by mass, and then molded into an almond shape under a molding pressure of 196 MPa. did. Next, the obtained almond-like particles were put into a rotary kiln and fired at a temperature of 1900 ° C. The obtained fired product was sieved to obtain magnesium oxide particles having an average particle diameter of 4 mm. The obtained magnesium oxide particles had a magnesium oxide content of 99% by mass.

(2) Manufacture of Composite Particles of Magnesium Oxide and Calcium Oxide Magnesium hydroxide slurry having a concentration of 30% by mass and lime milk having a concentration of 15% by mass prepared in the same manner as (1) above are converted into magnesium oxide. The amount and the oxide equivalent amount of calcium were mixed at a mass ratio of 72:25 (magnesium: calcium). The obtained mixture was filtered to obtain a cake, which was then dried until the moisture content reached 5% by mass, and then molded into an almond shape under a molding pressure of 196 MPa. Next, the obtained almond-like particles were put into a rotary kiln and fired at a temperature of 1900 ° C. The obtained fired product was sieved to obtain composite particles of 72 mass% magnesium oxide and 25 mass% calcium oxide having an average particle diameter of 4 mm.

(3) Manufacture of aqueous slime remover preparation kit The magnesium oxide particles manufactured in (1) above and the composite particles of magnesium oxide and calcium oxide manufactured in (2) above are 85:15 (oxidized). The mixture was mixed at a ratio of magnesium particles: composite particles) to obtain a granular material composed of a particle mixture of magnesium oxide particles and composite particles. 80 g of the obtained particle mixture was put into a container (capacity: 500 mL) equipped with a sprayer that can be attached to and detached from the opening shown in FIG. 1 to produce an aqueous slime remover preparation kit.

(4) Evaluation The aqueous slime remover preparation kit produced in (3) above was passed to 116 monitors, and an alkaline aqueous solution or aqueous alkaline suspension containing magnesium ions prepared by adding water to the aqueous slime remover preparation kit. After using the kitchen sink, the work of spraying the slime on the kitchen sink was continued for a week, and the condition of the slime after one week was evaluated. As a result, 116 monitors responded that the slime disappeared completely or almost completely.

1 container 2 atomizer 3 magnesium-containing particles

Claims (7)

An alkaline aqueous solution containing magnesium ions or an aqueous alkaline suspension in which particles of magnesium oxide and / or magnesium hydroxide are suspended has a slime containing bacteria and bacterial excrement on the tube wall. A method of removing slime from a drainage pipe to which slime adheres, characterized by being sprayed around the opening of the drainage pipe, wherein the alkaline aqueous solution contains particles containing magnesium oxide and / or magnesium hydroxide as an active ingredient The aqueous alkaline suspension is prepared by bringing water into contact with a granular material containing at least 70.0 % by mass of magnesium oxide and / or magnesium hydroxide. Is suspended. A container equipped with a sprayer that can be attached to and detached from the opening, and particles containing magnesium oxide and / or magnesium hydroxide as active ingredients, and containing magnesium oxide and / or magnesium hydroxide in an amount of not less than 70.0 % by mass An aqueous slime remover preparation kit for removing slime containing bacteria and bacterial excrement, including particulate matter to be removed.   The aqueous slime removing agent preparation kit according to claim 2, wherein an average particle diameter of the particles of the granular material is in a range of 0.1 to 50 mm.   The aqueous slime remover preparation according to claim 2, wherein the particles containing magnesium oxide and / or magnesium hydroxide contain calcium oxide and / or calcium hydroxide in an amount in the range of 0.1 to 30.0 mass%. kit.   Furthermore, the aqueous slime preparation preparation kit of Claim 2 in which the said granular material contains the particle | grains containing a calcium oxide and / or calcium hydroxide. An alkaline aqueous solution containing magnesium ions or an aqueous alkaline suspension in which particles of magnesium oxide and / or magnesium hydroxide are suspended has a slime containing bacteria and bacterial excrement on the tube wall. A method of removing slime from a drain pipe to which slime adheres, characterized by being sprayed around the opening of the drain pipe, wherein the alkaline aqueous solution contains particles containing magnesium oxide as an active ingredient, and contains magnesium oxide. It is prepared by bringing water into contact with a granular material containing 50.0% by mass or more of the whole, and the aqueous alkaline suspension is a suspension of the granular material. Bacteria and bacterial excretion comprising a container equipped with a sprayer that can be attached to and detached from an opening, and particles containing magnesium oxide as an active ingredient and containing 50.0% by mass or more of magnesium oxide based on the whole An aqueous slime remover preparation kit for removing slime containing a product.

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