Treatment Agent

Abstract

To provide a new treatment agent that can reduce a bad odor containing indole and skatole, the new treatment agent being applicable to at least one of operating rooms, endoscopy rooms, evacuation areas where flush toilets cannot be used, areas without infrastructure such as mountains and beaches, and the rooms of people in need of care who cannot go to a toilet on their own.SOLUTION: There is provided a treatment agent for treating waste liquid, the treatment agent containing slaked lime and pepper.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a treatment agent. [Background technology]

[0002] Proper disposal of excrement is important for maintaining a hygienic and comfortable environment, but this can be difficult in various situations and places, such as evacuation sites where flush toilets cannot be used during emergency disasters, areas without infrastructure such as mountainous or seaside areas, rooms of people who require care and cannot go to the toilet by themselves, and hospitals such as operating rooms and endoscopy rooms.

[0003] For example, in an endoscopy room, the endoscope is divided into upper examination, which is passed through the mouth or nose to examine the stomach, etc., and lower examination, which is passed through the anus to examine the rectum, large intestine, and small intestine. Both upper and lower examinations involve suction of bodily fluids, and in some cases washing with water while the examination is being performed, so waste liquid containing excrement, blood, and bodily fluids is discharged. The waste liquid containing bodily fluids generated in this way is sent for waste disposal.

[0004] Patent Document 1 discloses a configuration in which a treatment agent composed entirely or mainly of a high molecular weight water-absorbing polymer is placed in a collection container to absorb the waste liquid that flows down into the collection container through a waste liquid introduction pipe. As a result, the waste liquid collected by suction in the sealed collection container is supplied with the treatment agent that has been placed in advance in the collection container and is gradually gelled. Therefore, there is no risk of the collected waste liquid scattering outside the collection container, and it is said to be excellent in safety. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 02-157083 Summary of the Invention [Problem to be solved by the invention]

[0006] Although Patent Document 1 only mentions the problem of waste liquid treatment, there is also the problem of foul odors from excrement. In particular, the foul odors of indole and skatole are very unpleasant and cause headaches for medical professionals.

[0007] Therefore, the objective of the present invention is to provide a novel treatment agent capable of reducing malodors containing indole and skatole, and further to provide a novel treatment agent that can be applied to at least one of waste liquid treatment in operating rooms, endoscopy rooms, evacuation sites where flush toilets cannot be used, areas without infrastructure such as mountainous or seaside areas, and rooms of people requiring care who cannot go to the toilet by themselves. [Means for solving the problem]

[0008] One aspect of the present invention is a treatment agent comprising hydrated lime and pepper. Effect of the Invention

[0009] According to one embodiment of the present invention, a novel treatment agent capable of reducing malodors containing indole and skatole can be provided, which can be applied to at least one of waste liquid treatment in operating rooms, endoscopy rooms, evacuation sites where flush toilets cannot be used, areas without infrastructure such as mountains and seashores, rooms of people requiring care who cannot go to the toilet by themselves, etc. In addition, such a treatment agent can be used for the treatment of excrement, blood, vomit, or body fluids discharged from humans or animals, and for the treatment of organic sludge such as food waste. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a color photograph showing the growth inhibitory effect of sample A on spore-forming bacteria. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] In this specification, "X to Y" indicating a range means "X or more and Y or less". When "X to Y" are described multiple times, for example, when "X1 to Y1 or X2 to Y2" is described, the disclosure of each numerical value as the upper limit, the disclosure of each numerical value as the lower limit, and the combination of the upper and lower limits are all disclosed (i.e., the basis for the amendment is lawful). Specifically, the amendment of X1 or more, the amendment of Y2 or less, the amendment of X1 or less, the amendment of Y2 or more, the amendment of X1 to X2, and the amendment of X1 to Y2 must all be considered lawful. In addition, unless otherwise specified, the operation and measurement of physical properties are performed under the conditions of room temperature (20 to 25°C) / relative humidity 40 to 50% RH. Unless otherwise specified, % means mass %.

[0012] <Treatment agent> One aspect of the present invention is a treatment agent for treating wastewater, which contains slaked lime and pepper. This treatment agent can reduce malodors containing indole and skatole, and can be applied to wastewater treatment in at least one of the following locations where this problem is prevalent: operating rooms, endoscopy rooms, evacuation sites where flush toilets cannot be used, areas with poor infrastructure such as mountains and seaside areas, and rooms of people who need care and cannot go to the toilet by themselves.

[0013] In one embodiment of the present invention, the waste liquid is excrement, blood, vomit, or bodily fluids discharged from a human or animal. In one embodiment of the present invention, the waste liquid is fluid (excrement, blood, bodily fluids, etc.) discharged from a patient during a medical procedure such as an endoscopy (upper examination, lower examination). In one embodiment of the present invention, the waste liquid may be human excrement (feces and / or urine) (if only feces, it may contain liquids such as water).

[0014] In one embodiment of the present invention, the waste liquid contains at least one selected from the group consisting of n-butyric acid, n-valeric acid, isovaleric acid, indole, and skatole as a malodorous component. In one embodiment of the present invention, the waste liquid contains at least one of indole and skatole as a malodorous component. The treatment agent of the present invention is effective not only for fatty acids such as n-butyric acid, n-valeric acid, and isovaleric acid, but also for deodorizing (including reducing odor) at least one of indole and skatole in particular. In one embodiment of the present invention, the treatment agent is a treatment agent for deodorizing at least one of indole and skatole.

[0015] (Slaked lime) The treatment agent according to one embodiment of the present invention contains slaked lime. In one embodiment of the present invention, the content (mass%) of slaked lime in the treatment agent is 0.1 mass% or more, 0.5 mass% or more, 1 mass% or more, 2 mass% or more, 3 mass% or more, 5 mass% or more, 6 mass% or more, 7 mass% or more, 8 mass% or more, 9 mass% or more, 10 mass% or more, 12 mass% or more, 15 mass% or more, 17 mass% or more, 20 mass% or more, or 30 mass% or more. In one embodiment of the present invention, the content ratio (mass%) of slaked lime in the treatment agent is 70% by mass or less, 60% by mass or less, 50% by mass or less, 40% by mass or less, 35% by mass or less, 30% by mass or less, 28% by mass or less, 25% by mass or less, 20% by mass or less, 15% by mass or less, 14% by mass or less, 13% by mass or less, 10% by mass or less, 9% by mass or less, 8% by mass or less, 7% by mass or less, 6% by mass or less, 5% by mass or less, 4% by mass or less, or 3% by mass or less. In one embodiment of the present invention, the content ratio (mass%) of slaked lime in the treatment agent is 0.1 to 40% by mass, 0.5 to 35% by mass, 1 to 30% by mass, 3 to 28% by mass, 5 to 25% by mass, or 7 to 15% by mass.

[0016] In one embodiment of the present invention, the average particle size of the slaked lime is, for example, 10 μm or more, or 50 μm or more. In one embodiment of the present invention, the average particle size of the slaked lime is, for example, 1000 μm or less, 500 μm or less, or 300 μm or less. In addition, the "average particle size" described in this specification means, unless otherwise specified, an average value obtained by arbitrarily selecting a statistically reliable number of particles (or 100, 200, 300, or 1000 particles), measuring the longest particle size for each particle with a microscope, and arithmetically averaging them. In addition, in order to obtain a desired average particle size, it is sufficient to sieve the particles appropriately. In one embodiment of the present invention, a method of purchasing a commercially available product, for example, a product from Ube Material Industries, Ltd., is preferable as a method of preparing slaked lime.

[0017] (Pepper) The treatment agent according to one embodiment of the present invention includes pepper. Pepper is a fruit that grows on the pepper tree, Piper nigrum. In one embodiment of the present invention, the pepper may be any of black pepper, white pepper, green pepper, and pink pepper.

[0018] In one embodiment of the invention, the pepper is not in the form of a piperine extract.

[0019] In one embodiment of the invention, the average particle size of the pepper is, for example, 10 μm or more, or 50 μm or more. In one embodiment of the invention, the average particle size of the pepper is, for example, 1000 μm or less, 500 μm or less, or 300 μm or less.

[0020] In one embodiment of the present invention, the pepper content (mass%) in the treatment agent is 0.05% by mass or more, 0.1% by mass or more, 0.5% by mass or more, 1% by mass or more, 1.5% by mass or more, 1.6% by mass or more, 1.7% by mass or more, 1.8% by mass or more, 2% by mass or more, 2.5% by mass or more, 3% by mass or more, 3.2% by mass or more, 3.5% by mass or more, 3.8% by mass or more, 4% by mass or more, 5% by mass or more, 6% by mass or more, 7% by mass or more, 8% by mass or more, 9% by mass or more, 10% by mass or more, 12% by mass or more, 14% by mass or more, 16% by mass or more, 18% by mass or more, or 20% by mass or more. According to one embodiment of the present invention, the pepper content (mass %) in the treatment agent is 55% by mass or less, 45% by mass or less, 40% by mass or less, 30% by mass or less, 25% by mass or less, 20% by mass or less, 15% by mass or less, 10% by mass or less, 9% by mass or less, 8% by mass or less, 7% by mass or less, 6% by mass or less, 5.5% by mass or less, 5% by mass or less, 4% by mass or less, 3.8% by mass or less, 3.5% by mass or less, or 3% by mass or less.

[0021] According to one embodiment of the present invention, the content (mass%) of pepper in the treatment agent is 0.05 to 30 mass%, 0.1 to 25 mass%, 0.5 to 20 mass%, 1 to 15 mass%, 1.5 to 10 mass%, 1.6 to 9 mass%, 1.7 to 8 mass%, 1.8 to 7 mass%, 1.8 to 6 mass%, 1.8 to 5 mass%, 1.8 to 4.5 mass%, or 1.8 to 3.8 mass%.

[0022] According to one embodiment of the present invention, these content ratios (mass%) may be values ​​obtained by calculation including the binder in the treatment agent, or values ​​obtained by calculation excluding the binder from the treatment agent. Note that the content ratios (mass%) of components in the treatment agent described in this specification may be values ​​obtained by calculation including the binder in the treatment agent, or values ​​obtained by calculation excluding the binder from the treatment agent, as described above.

[0023] According to one embodiment of the present invention, the treatment agent may or may not contain a binder. The preferred range of the content (mass %) of each component in the treatment agent may vary depending on the presence or absence of a binder.

[0024] (Water-absorbent polymer) The treatment agent according to one embodiment of the present invention contains a water-absorbing polymer. By containing the water-absorbing polymer, moisture and the like in the object to be treated are absorbed, and the treated object is likely to solidify (become jelly-like). In this specification, the term "water-absorbing polymer (water-absorbing resin)" refers to a polymer gelling agent having a water swelling coefficient (CRC) of 5 g / g or more as defined by ERT441.2-02 and a water-soluble component (Ext) of 50 mass% or less as defined by ERT470.2-02.

[0025] In one embodiment of the present invention, specific examples of the water-absorbing polymer include starch-based water-absorbing polymers such as starch acrylonitrile graft polymer hydrolysate and starch acrylic acid graft polymer, cellulose-based water-absorbing polymers such as cellulose-acrylonitrile graft polymer and cellulose-styrene sulfonic acid graft copolymer, polysaccharide-based water-absorbing polymers such as pectin, protein-based water-absorbing polymers such as collagen, polyvinyl alcohol-based water-absorbing polymers such as polyvinyl alcohol crosslinked polymer, acrylic-based water-absorbing polymers such as sodium polyacrylate crosslinked body, acrylic acid polymer partial sodium salt crosslinked body, sodium acrylate-vinyl alcohol copolymer, maleic anhydride-based water-absorbing polymers, vinylpyrrolidone-based water-absorbing polymers, polyether-based water-absorbing polymers such as polyethylene glycol diacrylate crosslinked polymer, etc. These water-absorbing polymers may be used alone or in combination of two or more kinds. In addition, these water-absorbing polymers may be synthesized or commercially available products may be used. Examples of commercially available products include AQUAKEEP (registered trademark) SA (manufactured by Sumitomo Seika Chemicals Co., Ltd.), AQUALIC (registered trademark) CA (manufactured by Nippon Shokubai Co., Ltd.), Sunfresh (ST-250, ST-100, ST-573), AQUAPEARL (manufactured by San-Dia Polymer Co., Ltd.), HYMOSUB HS-960 (manufactured by HYMO Co., Ltd.), and EF Polymer (manufactured by EF Polymer Private Limited).

[0026] In one embodiment of the present invention, the water-absorbing polymer may be carboxymethylcellulose. Carboxymethylcellulose is a derivative of cellulose, and has a carboxymethyl group (-CH) attached to a portion of the hydroxyl group of the gluconopyranose monomer that constitutes the cellulose skeleton. 2 -COOH) is bonded to the carboxymethyl cellulose. The carboxymethyl cellulose may be a carboxymethyl cellulose salt. Carboxymethyl cellulose is a thickener that has a high affinity for water and becomes a gel-like, highly viscous body when mixed with water. In the present invention, the thickening of the treatment agent enhances the odor suppression effect and further maintains the odor suppression effect.

[0027] According to one embodiment of the present invention, the average particle size of the water-absorbing polymer is 1 to 1200 μm, 50 to 1100 μm, 10 to 1000 μm, 80 to 850 μm, 100 to 600 μm, 150 to 500 μm, or 200 to 400 μm.

[0028] According to one embodiment of the present invention, the content ratio (mass%) of the water-absorbing polymer in the treatment agent is 1% by mass or more, 5% by mass or more, 10% by mass or more, 15% by mass or more, 20% by mass or more, 25% by mass or more, 28% by mass or more, 30% by mass or more, 35% by mass or more, 40% by mass or more, 45% by mass or more, 50% by mass or more, 55% by mass or more, 60% by mass or more, or 65% by mass or more. According to one embodiment of the present invention, the content ratio (mass%) of the water-absorbing polymer in the treatment agent is 99% by mass or less, 95% by mass or less, 90% by mass or less, 85% by mass or less, 80% by mass or less, 75% by mass or less, 70% by mass or less, 65% by mass or less, 60% by mass or less, 55% by mass or less, 50% by mass or less, 45% by mass or less, 40% by mass or less, or 35% by mass or less.

[0029] According to one embodiment of the present invention, the content ratio (mass%) of the water-absorbing polymer in the treatment agent is 1% to 99% by mass, 5 to 95% by mass, 10 to 90% by mass, 15 to 85% by mass, 20 to 80% by mass, 25 to 75% by mass, 30 to 70% by mass, 35 to 65% by mass, 40 to 60% by mass, or 45 to 55% by mass. According to one embodiment of the present invention, the content ratio (mass%) of the water-absorbing polymer in the treatment agent is 25 to 60% by mass.

[0030] (Zinc Oxide) According to one embodiment of the present invention, the treatment agent contains zinc oxide. Zinc oxide is an oxide of zinc represented by ZnO, and has the effect of absorbing odorous components such as ammonia and sulfides to eliminate and deodorize. The zinc oxide can be freely selected from commercially available products. Examples include zinc oxide type I (manufactured by Hakusui Tech Co., Ltd.), zinc oxide type II (manufactured by Hakusui Tech Co., Ltd.), Pazet AB, Pazet AK, and Pazet CK (all manufactured by Hakusui Tech Co., Ltd.).

[0031] According to one embodiment of the present invention, the content ratio (mass%) of zinc oxide in the treatment agent is 0.05 mass% or more, 0.1 mass% or more, 0.25 mass% or more, 0.5 mass% or more, 1 mass% or more, 1.5 mass% or more, 2 mass% or more, 2.5 mass% or more, 3 mass% or more, 3.5 mass% or more, 3.8 mass% or more, 4 mass% or more, 4.2 mass% or more, 4.4 mass% or more, 4.6 mass% or more, 4.8 mass% or more, 5 mass% or more, 5.2 mass% or more, 5.4 mass% or more, 5.6 mass% or more, 5.8 mass% or more, 6 mass% or more, 6.2 mass% or more, or 6.4 mass% or more.

[0032] According to one embodiment of the present invention, the zinc oxide content (mass %) in the treatment agent is 30 mass % or less, 25 mass % or less, 23 mass % or less, 20 mass % or less, 18 mass % or less, 15 mass % or less, 10 mass % or less, 9 mass % or less, 8 mass % or less, 7 mass % or less, 6 mass % or less, 5 mass % or less, 4 mass % or less, or 3 mass % or less.

[0033] According to one embodiment of the present invention, the content (mass%) of zinc oxide in the treatment agent is 0.05 to 30 mass%, 0.1 to 25 mass%, 0.5 to 20 mass%, 1 to 15 mass%, 2 to 10 mass%, 2.5 to 8 mass%, 3 to 6 mass%, 3.5 to 5 mass%, or 3.8 to 4 mass%. According to one embodiment of the present invention, the content (mass%) of zinc oxide in the treatment agent is 2.5 to 30 mass%.

[0034] (Lignin) According to one embodiment of the present invention, the treatment agent contains lignin. Lignin is a polymeric phenolic compound involved in lignification of higher plants, and is also called xylin. Lignin can exert the effect of adsorbing and decomposing ammonia and other odorous substances.

[0035] According to one embodiment of the present invention, the content ratio (mass%) of lignin in the treatment agent is 0.01% by mass or more, 0.05% by mass or more, 0.1% by mass or more, 0.5% by mass or more, 0.8% by mass or more, 1% by mass or more, 1.2% by mass or more, 1.5% by mass or more, or 1.8% by mass or more. According to one embodiment of the present invention, the content ratio (mass%) of lignin in the treatment agent is 30% by mass or less, 25% by mass or less, 20% by mass or less, 15% by mass or less, 10% by mass or less, 8% by mass or less, 6% by mass or less, 4% by mass or less, 3.5% by mass or less, 3.3% by mass or less, 3.1% by mass or less, 3.0% by mass or less, 2.8% by mass or less, 2.6% by mass or less, or 2.4% by mass or less.

[0036] According to one embodiment of the present invention, the content ratio (mass%) of lignin in the treatment agent is 0.01 to 30 mass%, 0.05 to 25 mass%, 1 to 20 mass%, 1.5 to 15 mass%, 1.5 to 10 mass%, 1.5 to 8 mass%, 1.5 to 6 mass%, 1.5 to 4 mass%, or 1.5 to 3 mass%. According to one embodiment of the present invention, the content ratio (mass%) of lignin in the treatment agent is 1 to 3.5 mass%.

[0037] According to one embodiment of the present invention, the average particle size of the lignin is 1 to 500 μm, 5 to 300 μm, 10 to 100 μm, or 40 to 80 μm.

[0038] In one embodiment of the present invention, a method of preparing lignin is preferably a method of purchasing a commercially available product, such as Sunex and Vanillex (both manufactured by Nippon Paper Industries Co., Ltd.).

[0039] (Bentonite) According to one embodiment of the present invention, the treatment agent includes bentonite. Bentonite contains a large amount of layered aluminum phyllosilicate and has properties such as high viscosity, adhesion, water absorption and adsorption. Bentonite adsorbs cations such as ammonia, and suppresses and adsorbs the generation of ammonia and other odorous substances. In addition, by combining lignin with bentonite, the adsorption effect of the cations of bentonite and the complex three-dimensional network structure of lignin, which has not yet been elucidated, work together to further suppress the generation of ammonia and other odorous substances, adsorb, and decompose them.

[0040] According to one embodiment of the present invention, the content ratio (mass%) of bentonite in the treatment agent is 0.01% by mass or more, 0.05% by mass or more, 0.1% by mass or more, 0.5% by mass or more, 0.8% by mass or more, 1% by mass or more, 1.2% by mass or more, 1.5% by mass or more, or 1.8% by mass or more. According to one embodiment of the present invention, the content ratio (mass%) of bentonite in the treatment agent is 30% by mass or less, 25% by mass or less, 20% by mass or less, 15% by mass or less, 10% by mass or less, 8% by mass or less, 6% by mass or less, 4% by mass or less, 3.5% by mass or less, 3.3% by mass or less, 3.1% by mass or less, 2.8% by mass or less, 2.6% by mass or less, or 2.4% by mass or less.

[0041] According to one embodiment of the present invention, the content ratio (mass%) of bentonite in the treatment agent is 0.01 to 30% by mass, 0.05 to 25% by mass, 0.1 to 20% by mass, 1 to 15% by mass, 1.5 to 10% by mass, 1.5 to 8% by mass, 1.5 to 6% by mass, 1.5 to 4% by mass, or 1.5 to 3.5% by mass. According to one embodiment of the present invention, the content ratio (mass%) of bentonite in the treatment agent is 1 to 3.5% by mass.

[0042] According to one embodiment of the present invention, the average particle size of the bentonite is 0.05 to 300 μm, 0.5 to 200 μm, 10 to 150 μm, 50 to 148 μm, or 80 to 145 μm. According to one embodiment of the present invention, the volume average particle size (D50) of the bentonite is 0.05 to 300 μm, 0.5 to 200 μm, 10 to 150 μm, 50 to 148 μm, or 80 to 145 μm. According to one embodiment of the present invention, the mode diameter of the bentonite is 0.05 to 300 μm, 0.5 to 200 μm, 10 to 150 μm, 50 to 148 μm, or 80 to 145 μm.

[0043] In one embodiment of the present invention, a method of preparing bentonite is preferably a method of purchasing a commercially available product, such as Kunipia-F, Kunimine F, Moistnite S, Moistnite U (all manufactured by Kunimine Industries), or 250SA-B (all manufactured by Hoyo Bentonite Mining Co., Ltd., etc.).

[0044] (Zeolite) According to one embodiment of the present invention, the treatment agent contains zeolite. "Zeolite" is a general term for minerals called zeolites, and about 40 types of natural zeolites have been found. By containing zeolite, the pores of the zeolite can capture the malodor and suppress the malodor. The zeolite may be natural or artificial, but from the viewpoint of availability, artificial zeolite is preferable. In addition, the zeolite of the present invention is preferably a zeolite called mordenite, which has extremely small cavities of about 5.5 to 8 Å, which are slightly larger than water or nitrogen molecules, in a tunnel shape. When purchasing a commercially available zeolite, Zeolite 2460, Zeolite 60, Zeolite CP, Zeofil (registered trademark) series, etc., manufactured by Shin Tohoku Chemical Industry Co., Ltd. are preferable. The average particle size of the zeolite is not particularly limited, but is about 5 μm to 1.5 mm, about 8 μm to 1.2 mm, or about 10 to 100 μm. Zeolite includes SiO 2 (Silicon oxide), Al 2 O 3 (aluminum oxide), CaO (calcium oxide), Na2 O (sodium oxide), K 2 O (potassium oxide), Fe 2 O 3 (iron oxide), MgO (magnesium oxide), attached water (H 2 O), bound water (H 2 O), and others are contained in amounts of about 70.5 mass%, 11.3 mass%, 2.6 mass%, 1.6 mass%, 1.3 mass%, 0.7 mass%, 0.1 mass%, 8.0 mass%, and 3.9 mass%, respectively, but of course, the composition is not limited to these, and each component may be approximately 0.1 to 20% so that the total is 100%. 2 O 6 Zeolites such as ] may also be used.

[0045] According to one embodiment of the present invention, the content ratio (mass%) of zeolite in the treatment agent is 0.01% by mass or more, 0.05% by mass or more, 0.1% by mass or more, 0.5% by mass or more, 1% by mass or more, 1.5% by mass or more, 2% by mass or more, 3% by mass or more, 3.5% by mass or more, 4% by mass or more, 4.5% by mass or more, 5% by mass or more, 5.5% by mass or more, 6% by mass or more, 6.5% by mass or more, 7% by mass or more, 7.5% by mass or more, or 8% by mass or more. According to one embodiment of the present invention, the content ratio (mass%) of zeolite in the treatment agent is 40% by mass or less, 30% by mass or less, 25% by mass or less, 20% by mass or less, 15% by mass or less, 13% by mass or less, 12% by mass or less, 10% by mass or less, 9% by mass or less, or 8.5% by mass or less.

[0046] According to one embodiment of the present invention, the content ratio (mass%) of the zeolite in the treatment agent is 0.01 to 40 mass%, 0.05 to 30 mass%, 0.1 to 20 mass%, 0.5 to 15 mass%, 1 to 13 mass%, 1.5 to 12 mass%, 2 to 9 mass%, 3 to 9 mass%, or 3.5 to 8.5 mass%. According to one embodiment of the present invention, the content ratio (mass%) of the zeolite in the treatment agent is 1 to 20 mass%.

[0047] (Humic Acid) According to one embodiment of the present invention, the treatment agent includes humic acid. Humic acid is an end product formed through the decomposition of plants, etc. by microorganisms, and may be an organic fraction that is not classified as sugar, carbohydrate, protein, lipid, etc. Humic acid has a strong chelating bond with metal ions, has many functional groups, and may generate sugars and amino acids by hydrolysis.

[0048] According to one embodiment of the present invention, the average particle size of the material containing humic acid is about 100 nm to 3 mm, about 0.01 to 1 mm, about 100 to 900 μm, about 200 to 800 μm, or about 400 to 600 μm. According to one embodiment of the present invention, the material containing humic acid is 1 to 15 wt %, 5 to 14 wt %, or 7 to 12 wt % that passes through a sieve with a mesh size of 42 mm and on a sieve with a mesh size of 0.6 mm, 15 to 45 wt %, 30 to 43 wt %, or 40 to 42 wt % that passes through a sieve with a mesh size of 0.6 mm and on a sieve with a mesh size of 0.3 mm, and 20 to 60 wt %, 35 to 55 wt %, or 46 to 52 wt % that passes through a sieve with a mesh size of 0.03 mm.

[0049] In one embodiment of the present invention, the method of preparing the material containing humic acid is preferably a commercially available method.

[0050] According to one embodiment of the present invention, the content (mass%) of the material containing humic acid in the treatment agent is 0.01% by mass or more, 0.05% by mass or more, 0.1% by mass or more, 0.5% by mass or more, 1% by mass or more, 1.5% by mass or more, 3% by mass or more, 4% by mass or more, 5% by mass or more, 6% by mass or more, 6.5% by mass or more, 7% by mass or more, 7.5% by mass or more, 8% by mass or more, 8.5% by mass or more, or 9% by mass or more. According to one embodiment of the present invention, the content (mass%) of the material containing humic acid in the treatment agent is 30% by mass or less, 25% by mass or less, 20% by mass or less, 15% by mass or less, 13% by mass or less, 12% by mass or less, 10% by mass or less, 8% by mass or less, or 7% by mass or less.

[0051] According to one embodiment of the present invention, the content (mass%) of the material containing humic acid in the treatment agent is 0.01 to 30 mass%, 0.05 to 25 mass%, 0.1 to 20 mass%, 3 to 15 mass%, 4 to 13 mass%, or 5 to 12 mass%. According to one embodiment of the present invention, the content (mass%) of the material containing humic acid in the treatment agent is 1 to 20 mass%.

[0052] According to one embodiment of the present invention, the treatment agent contains lignin, bentonite, and humic acid. Such a combination can more efficiently suppress the malodor of ammonia and the like from the object to be treated.

[0053] (Disodium hydrogen phosphate) According to one embodiment of the present invention, the treatment agent contains disodium hydrogen phosphate. According to one embodiment of the present invention, the average particle size of disodium hydrogen phosphate is about 100 nm to 3 mm, about 0.01 to 1 mm, about 100 to 900 μm, about 200 to 800 μm, or about 400 to 600 μm, but is not limited thereto and may deviate from the above ranges, and commercially available products of the size may be used as appropriate.

[0054] According to one embodiment of the present invention, the content (mass%) of disodium hydrogen phosphate in the treatment agent is 0.01% by mass or more, 0.05% by mass or more, 0.1% by mass or more, 0.5% by mass or more, 1% by mass or more, 1.5% by mass or more, 3% by mass or more, 4% by mass or more, or 5% by mass or more. According to one embodiment of the present invention, the content (mass%) of disodium hydrogen phosphate in the treatment agent is 30% by mass or less, 25% by mass or less, 20% by mass or less, 15% by mass or less, 13% by mass or less, 12% by mass or less, 10% by mass or less, 8% by mass or less, or 7% by mass or less.

[0055] According to one embodiment of the present invention, the content (mass%) of disodium hydrogen phosphate in the treatment agent is 0.01 to 30 mass%, 0.05 to 25 mass%, 0.1 to 20 mass%, 3 to 15 mass%, 4 to 13 mass%, or 5 to 12 mass%. According to one embodiment of the present invention, the content (mass%) of disodium hydrogen phosphate in the treatment agent is 1 to 10 mass%.

[0056] (Sodium dihydrogen phosphate) According to one embodiment of the present invention, the concentration of sodium dihydrogen phosphate is less than 1% by mass. According to one embodiment of the present invention, the treatment agent is substantially free of sodium dihydrogen phosphate.

[0057] (baking soda) According to one embodiment of the present invention, the treatment agent includes baking soda (sodium bicarbonate). Baking soda has the formula NaHCO 3 Sodium bicarbonate is a sodium bicarbonate represented by the formula: Sodium bicarbonate is safe for the human body, as it is sometimes used as a food additive. Therefore, sodium bicarbonate is preferable because it is less likely to cause chemical burns. As a method for preparing sodium bicarbonate, a commercially available product may be purchased, and for example, industrial grade sodium bicarbonate manufactured by Tosoh, QINDAO HAI WAN GROUP IMP.&EXP.CO., or Zichuan Antou Alum Factory is preferable. According to one embodiment of the present invention, the average particle size of sodium bicarbonate is not particularly limited, but is preferably 30 to 150 μm, and more preferably 80 to 100 μm.

[0058] According to one embodiment of the present invention, the content ratio (mass%) of sodium bicarbonate in the treatment agent is 0.01% by mass or more, 0.05% by mass or more, 0.1% by mass or more, 0.5% by mass or more, 1% by mass or more, 1.5% by mass or more, 2% by mass or more, 3% by mass or more, 3.5% by mass or more, 4% by mass or more, or 4.5% by mass or more. According to one embodiment of the present invention, the content ratio (mass%) of sodium bicarbonate in the treatment agent is 40% by mass or less, 38% by mass or less, 35% by mass or less, 33% by mass or less, 30% by mass or less, 29% by mass or less, 28% by mass or less, 25% by mass or less, 20% by mass or less, 18% by mass or less, 15% by mass or less, 13% by mass or less, 12% by mass or less, 11% by mass or less, or 10% by mass or less.

[0059] According to one embodiment of the present invention, the content (mass%) of sodium bicarbonate in the treatment agent is 0.01 to 40 mass%, 0.05 to 38 mass%, 0.1 to 35 mass%, 0.5 to 30 mass%, 1 to 28 mass%, 1.5 to 25 mass%, 2 to 20 mass%, 3 to 18 mass%, 3.5 to 15 mass%, 4 to 12 mass%, or 4.5 to 10 mass%. According to one embodiment of the present invention, the content (mass%) of sodium bicarbonate in the treatment agent is 1 to 20 mass%.

[0060] (Limonite) According to one embodiment of the present invention, the treatment agent includes limonite.

[0061] The chemical composition of limonite is FeO(OH) nH 2 O, but hematite (Fe 2 O 3 ), clay minerals, manganese(II) oxide, etc. as impurities. The inclusion of limonite allows the decomposition and adsorption of sulfur-based compounds such as mercaptan, methyl mercaptan, and hydrogen sulfide, which are odorous components in feces, as well as fatty acid-based compounds.

[0062] According to one embodiment of the present invention, the content ratio (mass%) of limonite in the treatment agent is 0.01% by mass or more, 0.05% by mass or more, 0.1% by mass or more, 0.5% by mass or more, 1% by mass or more, 1.5% by mass or more, 2% by mass or more, 3% by mass or more, 3.5% by mass or more, 4% by mass or more, or 4.5% by mass or more. According to one embodiment of the present invention, the content ratio (mass%) of limonite in the treatment agent is 40% by mass or less, 38% by mass or less, 35% by mass or less, 30% by mass or less, 28% by mass or less, 25% by mass or less, 20% by mass or less, 18% by mass or less, 15% by mass or less, 13% by mass or less, 12% by mass or less, 10% by mass or less, 5% by mass or less, 2% by mass or less, or less than 1% by mass.

[0063] According to one embodiment of the present invention, the content (mass%) of limonite in the treatment agent is 0.01 to 40 mass%, 0.05 to 38 mass%, 0.1 to 35 mass%, 0.5 to 30 mass%, 1 to 28 mass%, 1.5 to 25 mass%, 2 to 20 mass%, 3 to 18 mass%, 3.5 to 15 mass%, 4 to 12 mass%, or 4.5 to 10 mass%. According to one embodiment of the present invention, the concentration of limonite in the treatment agent is less than 1 mass%. According to one embodiment of the present invention, the treatment agent is substantially free of limonite.

[0064] According to one embodiment of the present invention, the volume average particle size (D50) of limonite in particle size distribution measurement is preferably 0.1 to 200 μm, more preferably 1 to 150 μm, even more preferably 5 to 100 μm, and even more preferably 10 to 50 μm. By being in such a range, the intended effect of the present invention can be efficiently achieved.

[0065] Limonite can be freely selected from commercially available products, such as LMB50 and LMB300 (both manufactured by Nippon Limonite Co., Ltd.).

[0066] According to one embodiment of the present invention, the treatment agent is in an air-dried state (a state in which the treatment agent placed in the air loses moisture through natural drying and maintains equilibrium with the humidity in the air).

[0067] <Lump-shaped treatment agent> According to one embodiment of the present invention, the treatment agent may be granulated using a binder such as water, PVA, cellulose, water-soluble cellulose, sodium alginate, etc. That is, according to one embodiment of the present invention, the treatment agent is a lump-shaped treatment agent. In addition, the treatment agent of one embodiment of the present invention may be in the form of a granular treatment agent or a lump-shaped treatment agent using the technology of JP 2013-6137 A or JP 2011 / 162244 A. According to one embodiment of the present invention, the treatment agent includes a lubricant. The lubricant is used to make the feeding into the mortar of the tablet press smooth when preparing the lump-shaped treatment agent. Therefore, the type of lubricant may be appropriately selected from those known in the art or used in combination. For example, ester-based, silicon-based, stearate ester, calcium stearate, potassium stearate, calcium, zinc, etc. are used. The content of the lubricant is about 0.3 to 5 mass%, about 0.8 to 4.5 mass%, or about 0.8 to 3 mass% with respect to the total amount of the treatment agent.

[0068] According to one embodiment of the present invention, the average diameter of the treatment agent is 0.01 to 100 mm, 0.1 to 50 mm, 1 to 30 mm, 3 to 20 mm, or 5 to 20 mm. In this specification, unless otherwise specified, "average diameter" refers to an average value obtained by arbitrarily selecting a statistically reliable number of particles (or 10, 100, 200, 300, or 1000 particles), measuring the longest particle diameter for each particle with a vernier caliper, and taking the arithmetic mean of these.

[0069] According to one embodiment of the present invention, the treatment agent is prepared using a tabletop manual tablet press. In order to prepare a lump-shaped treatment agent using a tabletop manual tablet press (one punch and one die), first, each component to be solidified is manually put into the pestle using a spoon. After that, the lever is manually (hydraulic) lowered to apply pressure to solidify each component and prepare a lump-shaped treatment agent. For example, when a small-diameter pestle (diameter 7 mm: upper and lower circular plate type) is used, the smaller the diameter, the higher the pressure per area, so even materials that are difficult to solidify tend to solidify. On the other hand, when a large-diameter pestle (diameter 15 mm: upper and lower flat plate type) is used, the larger the diameter, the lower the pressure per area, so it is disadvantageous for materials that are difficult to solidify, but the larger the diameter, the easier it is to feed the pestle, and productivity is improved.

[0070] According to one embodiment of the present invention, the treatment agent is prepared by a continuous tablet press. The continuous tablet press may or may not be a direct compression type, but it is also preferable to adopt a direct compression type, which improves productivity in that it can eliminate the trouble of pretreatment. In addition, it is preferable to add a lubricant to make it easier to feed fine powder. On the other hand, when performing pretreatment, for example, a lubricant may be prepared by mixing a binder (binding agent) with a fine powder granulated by rolling with a roller compactor under high pressure and tableting the mixture. In consideration of mass production, it is preferable to use a tablet press (model AP18-SS, etc.) manufactured by Hata Iron Works Co., Ltd. In this case, the diameter of the punch and die is about 13 mm, and the number of punches is about 18. If such a tablet press is used, the raw materials are prepared to have a desired ratio, mixed, the mixed raw materials are put into the hopper of the tablet press, and the tablet press is rotated to tablet, which is preferable.

[0071] According to one embodiment of the present invention, the treatment agent is prepared by a continuous rotary tablet press. As described above, there is no particular limitation on the method for preparing the treatment agent (lump treatment agent). The treatment agent may be prepared by mixing the components constituting the treatment agent in any order, or by mixing the desired components including the binder while tableting using a tablet press.

[0072] (Binder) According to one embodiment of the present invention, the binder is preferably a cellulose-based binder, which has the effect of binding a part or all of the components contained in the treatment agent.

[0073] According to an embodiment of the present invention, the binder may be prepared by purchasing a commercially available product. Examples of commercially available products that can be used include PH-102, TG-101, ST-02, and TG-101 manufactured by Asahi Kasei Chemicals Corporation, PVPK-15, PVPK-30, and PVPK-90 (polyvinylpyrrolidone) manufactured by Higuchi Shokai Co., Ltd., KC series (KC Flock W-50S, W-50, W-100 / 100G, W-200 / 200G, W-250, W-300G, and W-400G) manufactured by Nippon Paper Chemicals Co., Ltd., and Cerrossa series (Cerrossa K2) manufactured by Asahi Kasei Chemicals Corporation.

[0074] The main function of the binder is to contribute to solidification. Therefore, the smaller the amount, the better. According to one embodiment of the present invention, the binder content (mass%) in the treatment agent is 5 mass% or more, 10 mass% or more, 15 mass% or more, 20 mass% or more, or 25 mass% or more. According to one embodiment of the present invention, the binder content (mass%) in the treatment agent is 60 mass% or less, 55 mass% or less, 50 mass% or less, or 45 mass% or less. According to one embodiment of the present invention, the binder content (mass%) in the treatment agent is 10 to 50 mass%.

[0075] According to one embodiment of the present invention, the treatment agent is not in a lump form. According to one embodiment of the present invention, the treatment agent may be in the form of a mixture in which the components constituting the treatment agent are simply mixed without applying pressure or the like. According to one embodiment of the present invention, the treatment agent is substantially free of a binder having a function of binding some or all of the components constituting the treatment agent. In this specification, the expression "substantially free of" includes the concept of not only not containing the component at all, but also the concept of containing 0.005 mass% or less of the component in the treatment agent.

[0076] According to one embodiment of the present invention, the lump treatment agent is in an air-dried state (a state in which the treatment agent placed in the air loses moisture through natural drying and maintains equilibrium with the humidity in the air).

[0077] <Treatment with treatment agents> There is no particular limitation on the specific method of treatment, but according to one embodiment of the present invention, a method of contacting the waste liquid with a treatment agent is suitable. According to one embodiment of the present invention, a method of adding a treatment agent to the waste liquid is exemplified. According to one embodiment of the present invention, a method of adding the waste liquid to the treatment agent is exemplified. According to one embodiment of the present invention, a treatment agent is placed in advance in a bottle that collects waste liquid discharged from a human during a surgical procedure (e.g., an endoscope). Waste liquid discharged by suction or the like is introduced into a bottle in which the treatment agent of the present invention is placed in advance, and the waste liquid is treated.

[0078] For example, in an endoscopic examination, waste fluids (excrement, blood, body fluids, etc.) are discharged from the digestive tract (stomach, rectum, large intestine, small intestine, etc.) after the examination, and this waste fluid is used for waste disposal. In addition, in hospitals, waste fluids such as urine from hospitalized patients are also used for waste disposal. These waste fluids may contain spore-forming bacteria such as Bacillus and Clostridium. Spore-forming bacteria are representative of bacteria that cause opportunistic infections. Spore-forming bacteria are heat-resistant bacteria that can withstand heat of over 100°C, and also form spores within the bacterial body when nutrients are lacking or the environment deteriorates. These spores are resistant not only to heat but also to drying and disinfectants, so they can survive in harsh environments until they are in an environment suitable for growth. Then, when the growth environment, such as moisture, temperature, and nutrients, is ready, they germinate and become vegetative cells and grow. Therefore, spore-forming bacteria require special attention in hospital infection control. The treatment agent according to the present invention can suppress or inhibit the germination or proliferation of spore-forming bacteria by contacting such waste liquid. Therefore, it is particularly useful in hospitals that need to treat a large amount of waste liquid from patients. Here, the reason why the treatment agent according to the present invention exerts an inhibitory or inhibiting effect on the germination or proliferation of spore-forming bacteria is unclear, but is presumed as follows. The present invention is not limited by the following presumption. The treatment agent according to the present invention contains hydrated lime and pepper. Among them, the presence of hydrated lime makes the waste liquid alkaline. Therefore, the spore coat (outer layer of spore coat, inner layer of spore coat) of spore-forming bacteria placed in an alkaline atmosphere becomes soft, making it easier for substances to enter from the outside world. Therefore, pepper and zinc oxide (if further contained) in the treatment agent are more likely to directly act on the core, and spore germination and proliferation (growth) of bacteria are effectively suppressed or inhibited.

[0079] That is, the treating agent according to the present invention is used to suppress or inhibit spore germination or proliferation of spore-forming bacteria. The present invention also provides a method for suppressing or inhibiting spore germination or proliferation of spore-forming bacteria, which comprises contacting a waste liquid with the treating agent according to the present invention. Here, examples of spore-forming bacteria include well-known spore-forming bacteria of the genus Amphibacillus, Bacillus, Clostridium, and Sporosarcina. Among these, the treating agent according to the present invention exhibits excellent suppressing or inhibiting ability of spore germination or proliferation against the genus Clostridium, particularly Clostridioides difficile.

[0080] According to one embodiment of the present invention, the amount of the treatment agent relative to the object to be treated (for example, waste liquid discharged in an endoscopic examination: about 1000 mL to about 4000 mL) can be appropriately adjusted as necessary, but as a guideline, it is 1 to 1000 g, 2 to 900 g, 3 to 800 g, 5 to 750 g, 10 to 700 g, 20 to 650 g, or 30 to 600 g. According to one embodiment of the present invention, after the object to be treated and the treatment agent are contacted (and then mixed as necessary), the treatment agent may be left to stand for, for example, 5 minutes to 30 days, 120 minutes to 20 days, 300 minutes to 10 days, 200 minutes to 5 days, 400 minutes to 3 days, or 500 minutes to 2 days. The treatment agent of the present invention also has the effect of suppressing the malodor from the object to be treated for a long period of time.

[0081] In this embodiment, the treatment agent may further contain other components. Here, the other components include an antibacterial agent. Here, the antibacterial agent when the treatment agent further contains an antibacterial agent is not particularly limited, and examples thereof include inorganic antibacterial agents such as silver and copper, natural antibacterial agents such as chitin, chitosan, allyl isothiocyanate, hinokitiol, and limonene, and antibacterial agents such as penicillin and macrolide. When the treatment agent further contains an antibacterial agent, the amount of the antibacterial agent is not particularly limited, and can be appropriately selected depending on the desired effect of suppressing or inhibiting spore germination or proliferation. EXAMPLES

[0082] <Preparation of artificial waste liquid (control (i))> 4 g of soy protein hydrolysate (hypopolypeptone), 0.8 g of garlic paste, and 0.2 g of urea were dissolved in 1 L of pure water. 1.0 g-wet of black soil was added to 25 mL of this solution to prepare the control (i).

[0083] <Preparation of controls (ii) and (iii)> To control (i), one tablet (0.72 g) of control treatment 1 was added to form control (ii), and 0.72 g of control treatment 2 was added to form control (iii).

[0084] (Preparation of Control Treatment 1) Control treatment agent 1 (average diameter: 15 mm, average thickness: 5 mm) was obtained by putting the following components into the mortar of a tabletop tablet press (manufactured by Kikusui Seisakusho Co., Ltd.) and tableting with a pressure of 40 kN to obtain 70 tablets of the treatment agent. The punch used was a top and bottom flat type with a diameter of 15 mm.

[0085] [Table 1]

[0086] (Preparation of Control Treatment 2) The components constituting the treatment agent were mixed so as to obtain the composition shown in the table below, to prepare 100 g of the treatment agent.

[0087] [Table 2]

[0088] <Addition of various chemicals> To the control (ii) and control (iii), various drugs etc. shown in the table below were further added in the amounts and concentrations shown in the table below.

[0089] [Table 3]

[0090] First, the odor intensity measurements for the control (ii)-based experiment are shown in Table 5.

[0091] The odor intensity was determined by the arithmetic mean of scores given by multiple individuals (3 people) who had passed the odor panel selection test according to the following criteria.

[0092] [Table 4]

[0093] [Table 5-1]

[0094] [Table 5-2]

[0095] Looking at the change in odor intensity in Table 5, the odor intensity of control (i) fluctuated around 3.5 from day 1 to day 11. Control (ii) showed a large effect with an odor intensity of 2 on day 1, but the intensity gradually increased, reaching the same level as control (i) on day 5 and the highest of all the systems on day 8.

[0096] In the control (ii) system where various chemicals were added, CaO was added to improve the reducing atmosphere where malodorous substances are easily generated. 2and iron oxide were less effective, being worse or equal to control (ii). The system to which activated carbon was added showed a certain degree of effectiveness, with the odor intensity remaining about 0.5 lower than that of control (ii) until the 8th day, but on the 8th day mold began to grow and an unpleasant odor was emitted. For this reason, testing of the system to which activated carbon was added was stopped. In some other cases, the quality of the odor changed due to the chemical itself or the growth of mold, increasing the unpleasantness. Systems to which copper salts, silver salts, alum, chlorine agents, or disinfectants for the purpose of sterilization were added all suppressed fecal and putrid odors more than control (ii), but in some cases the odor intensity increased due to the strong odor of the chemicals, such as chlorine agents, and the results were not satisfactory.

[0097] Regarding the quality of the odor, the smell of feces and the smell of a pit toilet began to be detected from around the fourth day in the control (i), and although the odor intensity in the control (ii) was lower, the smell of a pit toilet began to be detected from the same period.

[0098] CaO 2 The system with silver salts or ferric oxides added was not significantly different from the control (ii) in terms of the change in odor quality, while the system with iron oxide or alum added suppressed the septic toilet odor for a few days, but then emitted a similar odor. The system with activated carbon or copper salts added suppressed the septic toilet odor a little, but it emitted a different odor or grew mold, so it was not considered to be very good. The system with dichloroisocyanuric acid added did not have much of a septic toilet odor, but had a relatively strong chlorine odor or burnt odor.

[0099] On the other hand, in the case of the control (ii), water started to come out from the top on the fourth day, and on the sixth day it was separated into three layers with water being seen in the middle layer. 2 In the added system, it separated into three layers on the fourth day and had a high water content. This is thought to be because calcium coordinated with the polymeric water-absorbent resin (water-absorbent polymer), causing a decrease in the amount of water absorbed. A similar phenomenon was also seen in the system to which copper salts were added. In the other systems, no significant difference was observed in the water retention area compared to the control.

[0100] Next, the odor intensity measurement results for Control Treatment Agent 2 are shown in Table 7.

[0101] [Table 6]

[0102] [Table 7-1]

[0103] [Table 7-2]

[0104] Control treatment agent 2 (control (iii)) suppressed odors second only to activated carbon on the first day, but the odor intensity increased considerably on the fourth and fifth days. Perhaps because it emitted a strong odor, the odor intensity decreased slightly from the eighth day onwards, but control treatment agent 2 (control (iii)) seemed to have a low long-term odor suppression effect.

[0105] In the control (iii) system in which various chemicals were added, CaO 2 Except for the system with added zeolite, the odor intensity was generally low. Among these, the systems with added silver salt, activated carbon, or cationic surfactant (bactericide) showed relatively good results.

[0106] However, in terms of the quality of the smell, the control (iii) had a strong fecal odor, a toilet odor, and irritation on the fourth day. 2 In the systems to which iron oxide, activated carbon, copper salts, silver salts or alum had been added, the smell of the pit toilet was felt from the same period, although the intensity varied.

[0107] In the system where dichloroisocyanuric acid was added, a chemical odor was felt continuously and at a constant intensity. In the system where benzalkonium chloride was added, a garlic odor continued for a long time, organic matter decomposition was inhibited, and the generation of fecal odor was also inhibited, but by the 11th day, a toilet-related odor was emitted.

[0108] Regarding the condition when used, CaO 2 The other systems did not show any significant difference from the control (iii).

[0109] In the above test, CaO 2 In the system where copper was added, the water absorption effect was weakened and there was no effect on the odor, so further investigation was terminated. The system where iron oxide was added also had a slight effect, so further investigation was terminated. The effect of copper salt was the same as that of silver, but it inhibited the water-absorbent resin, so further investigation was terminated.

[0110] The above was the first test, and then, in the second test, the effects of silver salt, alum, dichloroisocyanuric acid, or benzalkonium chloride were confirmed by changing the concentration. In addition, CMC (sodium carboxymethylcellulose) glue, which is predicted to have the effect of increasing viscosity and suppressing mass transfer, sodium chloride, which is predicted to have the effect of increasing salt concentration and reducing microbial activity, soluble oxidizing iron salts, benzethonium chloride, a cationic surfactant similar to benzalkonium chloride, and sodium percarbonate, which generates hydrogen peroxide in water, were tested alone as agents to be added to control (ii) (single system). Furthermore, the effects of combinations of benzalkonium chloride and activated carbon, sodium chloride and activated carbon, sodium percarbonate and activated carbon, sodium percarbonate and benzalkonium chloride, and sodium percarbonate and silver salt were confirmed as agents to be added to control (ii) (combined system).

[0111] The conditions for these second odor inhibition tests are shown in the table below.

[0112] [Table 8]

[0113] The comfort level was determined by the arithmetic mean of scores given by three people who had passed the odor panel selection test according to the following criteria.

[0114] [Table 9]

[0115] [Table 10-1]

[0116] [Table 10-2]

[0117] In the control (ii), the smell of the septic toilet was strong from the third to the seventh day, and after that, the smell of rotting vegetables and the like could be detected, possibly because some of the toilet-related odorous components had evaporated during that time.

[0118] In the systems where silver salt, alum, sodium chloride or ferric chloride was added, the test began to smell like a septic toilet around the third day, and the test was stopped around the seventh to eleventh day when mold began to grow and the odor changed.

[0119] In the system containing CMC glue, although there was an odor reminiscent of plastic or rubber, the odor was not very reminiscent of a pit toilet until about the eighth day, but after that the odor of the pit toilet and the smell of decay became stronger.

[0120] In the systems where benzalkonium chloride or benzethonium chloride was added, a chemical odor was always noticeable, but the septic toilet odor was relatively suppressed, and this effect was greater in the system where benzethonium chloride was added. In the system where sodium percarbonate was added, a distinctive and unpleasant chemical odor was noticeable, but the septic toilet odor itself was relatively suppressed for about two weeks.

[0121] [Table 11]

[0122] In the systems where the compounds were added in combination, mold often grew during the test, and no particular effect of adding compounds in this system was found.

[0123] Odor intensity is an index of the strength of an odor, and there are cases where a strong odor is not felt to be unpleasant, and cases where a weak odor is felt to be unpleasant. Therefore, we continued our investigation by focusing on the pleasantness / unpleasantness of odors.

[0124] In addition to the control (ii), various natural chemicals were added, including tea (100% green tea leaves), perilla, chili pepper, black pepper, Houttuynia cordata, powdered mustard, and powdered wasabi, and the pleasantness or unpleasantness of the odor was evaluated in the same manner as above. The amount of each of these added to the control (ii) was 0.1 g.

[0125] [Table 12]

[0126] As a result, the system containing pepper had the best pleasantness / unpleasantness score, with almost no unpleasantness felt for about 10 days. Looking at the odor quality, the system containing pepper, which did not have a high unpleasantness score, was recognized as mainly a peppery smell. The composition of the system containing pepper is summarized below.

[0127] [Table 13]

[0128] In addition, if the binder (KC200 (KC Flock)) is excluded from the above table and the content ratio of each component is converted, it becomes as follows.

[0129] [Table 14]

[0130] Next, further investigation was carried out to see if there was a system that was better than pepper. Specifically, because control (ii) contains slaked lime (an alkaline component), it was examined whether adding more alkali would suppress putrefaction and thereby suppress the bad odor, and whether potassium iodide could react with organic matter to exert a bactericidal effect as an iodine agent and suppress the bad odor. Specifically, for control (ii), various chemicals were added, including sodium sesquicarbonate, sodium bicarbonate, and potassium iodide, and the pleasantness and unpleasantness of the odor was evaluated in the same manner as above. The amount of chemicals added to control (ii) was all 0.1g.

[0131] [Table 15]

[0132] As shown in Table 15, the pleasantness and unpleasantness of these compounds were equal to or lower than that of the control (ii), and no effect was observed. There was also no significant difference in odor quality.

[0133] Next, an experiment was conducted in which a thickening agent with a thickening effect was added, aiming to reduce the amount of volatile odors by decreasing the mobility of odorous components in the liquid due to increased viscosity. Specifically, for control (ii), samples containing hi-metolose, PVA, and starch were prepared as various agents, and the pleasantness and unpleasantness of the odors were evaluated in the same manner as above. The amount of agent added to control (ii) was 0.1g for hi-metolose and starch, and 0.1ml for PVA.

[0134] [Table 16]

[0135] Thus, I did not get the results I expected.

[0136] Next, experiments were conducted with various surfactants, aiming at the odor suppression effect of a method for reducing the number of live bacteria, such as surfactants. Specifically, for the control (ii), 0.1 g of Triton X100 (Kishida Chemical), a representative nonionic surfactant, 0.1 g of soap (a commercially available fatty acid ester soap shaved into powder), and two cationic surfactant samples (Cation G50: benzalkonium chloride solution, Osmolin DA-50: didecyldimethylammonium adipate) were used as various chemicals. The two cationic surfactant samples were used at the following concentrations. Note that the various surfactants were added to 25 mL of artificial wastewater, so the actual amount added can be calculated from the above concentrations.

[0137] [Table 17]

[0138] In terms of comfort level, the test results showed that the system containing Triton X and DA-50 at 300mg / L was slightly better than the control (ii). When comparing the systems containing G-50 or DA-50 at 100mg / L, the system containing DA-50 was slightly better. Benzalkonium chloride solution is known to be used as a disinfectant for hands and contaminated environments.

[0139] Taking all the results thus far into account, we have concluded that pepper is the most effective in reducing odors.

[0140] Therefore, each component of the following composition including pepper was placed in the mortar of a tabletop tablet press (manufactured by Kikusui Seisakusho Co., Ltd.) and pressed with a pressure of 40 kN to obtain 50 g (70 tablets) of each of the block-shaped treatment agents KS-22-α1, KS-22-α2, and KS-22-α3. In addition, 50 g (70 tablets) of tab22, which does not contain pepper, was obtained (average diameter: 15 mm, average thickness: 5 mm). The pestle used was a top-bottom flat type with a diameter of 15 mm.

[0141] [Table 18]

[0142] In addition, in Table 18 above, if the binder (KC200 (KC Flock)) is excluded and the content ratio of each component is converted, it becomes as follows.

[0143] [Table 19]

[0144] [Table 20]

[0145] In addition, in Table 20 above, if the binder (KC200 (KC Flock)) is excluded and the content ratio of each component is converted, it becomes as follows.

[0146] [Table 21]

[0147] [Table 22]

[0148] In addition, in Table 22 above, if the binder (KC200 (KC Flock)) is removed and the content ratio of each component is converted, it becomes as follows.

[0149] [Table 23]

[0150] [Table 24]

[0151] And to the control (i) was added one tablet (0.72 g) of each of the above bulk treatments.

[0152] As in previous experiments, the pleasantness and unpleasantness of these odors were measured by multiple people (3 people) who had passed the odor panel selection test.

[0153] [Table 25]

[0154] <Preparation of simulated feces> Next, to prepare the simulated feces to be used in the test, fatty acids, indole, and skatole were added in amounts to the extent that each would contribute to a certain degree of odor to stone powder clay, which has a texture and specific gravity similar to feces, and mixed. The preparation concentrations are shown in the table below.

[0155] [Table 26]

[0156] In the test, 65 g of simulated feces was placed in a plastic bag, and a specified amount (50 g) of each of the control treatment agent 1, KS-22-α1, and KS-22-α1 powder type + silver salt (0.5% by weight of silver nitrate added to the total weight of KS-22α1 powder type (not compressed)) was added, and then 200 mL of pure water was added and the bag was immediately placed in a container with a volume of 17 L. In this way, the control (no treatment agent added), control treatment agent 1, KS-22-α1, and KS-22-α1 powder type + silver salt were evaluated.

[0157] <Test Results> The measurement results of n-butyric acid, n-valeric acid, isovaleric acid, indole, and skatole concentrations, as well as the inhibition rates relative to the odorant control, are shown in the table below.

[0158] (n-Butyric acid) For n-butyric acid, the volatile concentration of the control (200 mL of pure water added to simulated feces) was 0.34 ppm at 4 hours, and fluctuated around 0.7 ppm from the 3rd day onwards. In contrast, control treatment agent 1 showed 0.15 ppm at 4 hours, 0.07 ppm at the 3rd day, and around 0.04 ppm from one week onwards. In the KS-22-α1 and KS-22-α1 powder type + silver salt systems, the concentration was 0.03 ppm or less at 4 hours, and generally 0.01 ppm or less from the first day onwards, which were low levels. In terms of inhibition rate, the KS-22-α1 powder type + silver salt system showed 98% or more from the first day onwards.

[0159] The control treatment 1 system had an inhibition rate of more than 90% from the first day onwards, but the KS-22-α1 system showed an inhibition rate that was about 10% higher. This may only seem like a small percentage, but it means that the odor was reduced to 1 / 10 or 1 / 50 of the control odor, and considering that human responses to odors are exponential and that the odor intensity and concentration guidelines of the Offensive Odor Prevention Law are met, it is believed that an improvement was achieved in the sensory evaluation (odor intensity) of n-butyric acid, lowering it by about one level.

[0160] (n-Valeric acid) For n-valeric acid, the control showed 0.4 ppm at 4 hours and around 1.3 ppm from the first day onwards. In contrast, control treatment agent 1 showed low levels of 0.08 ppm at 4 hours and 0.03 ppm or less from the first day onwards. KS-22-α1 and KS-22-α1 powder type + silver salt showed approximately 0.01 ppm or less from the fourth hour, showing even higher performance than control treatment agent 1. In terms of inhibition rate against the control, control treatment agent 1 was 80% at the fourth hour, while KS-22-α1 and KS-22-α1 powder type + silver salt showed 95% or more, and from the first day onwards, control treatment agent 1 showed an inhibition rate of 99% or more, while control treatment agent 1 was in the range of 97-99%.

[0161] (Isovaleric acid) Isovaleric acid showed a similar tendency to valeric acid, with the control showing 0.33 ppm at 4 hours and around 1.1 ppm from the first day onwards. Control treatment agent 1 showed 0.04 ppm at 4 hours and less than 0.01 ppm from the first day onwards, while KS-22-α1 and KS-22-α1 powder type + silver salt showed less than 0.01 ppm from the fourth hour onwards. The inhibition rate also showed a similar tendency to n-valeric acid.

[0162] The results of the measurements of these three fatty acids showed that KS-22-α1 quickly suppressed the volatilization of gases that cause acidic stool odors in a short period of time. It also showed that the product maintained higher levels of these components than conventional products and continued to suppress volatilization for two weeks.

[0163] (Indole, Skatole) The properties of the chemicals are different, and for indole and skatole, which are typical fecal odor components, the volatilization concentration also tended to increase gradually in the control, with indole showing 0.017 ppm in the early stage and 0.090 ppm in the second week. Skatole also showed 0.005 ppm in the early stage and 0.029 ppm in the second week.

[0164] With Reference Treatment 1, the concentrations were lower than the control, but indole was 0.010-0.027 ppm and skatole was 0.004-0.016 ppm, showing a gradual tendency of increasing concentration until the first or second week. With KS-22-α1 and KS-22-α1 powder type + silver salt, the volatile concentrations were clearly lower than the control and Reference Treatment 1, with indole at 0.002-0.010 ppm and skatole at 0.001-0.003 ppm.

[0165] In terms of inhibition rate, indole showed 40% in the early stage and 60-70% after the first day, while skatole showed a large fluctuation but remained between 10-50%, and the inhibition effect was low. Skatole in particular is a substance that is considered to be a representative of fecal odor, and the results showed that the volatilization inhibition rate of this substance was insufficient.

[0166] On the other hand, in the case of KS-22-α1 and KS-22-α1 powder type + silver salt, both indole and skatole showed approximately 75% at 4 hours, after which they increased slightly to 80-90% for KS-22-α1 and over 90% for KS-22-α1 powder type + silver salt.

[0167] The control treatment 1 had a low inhibitory effect on indole and skatole, and in some cases showed a higher volatilization concentration than the control, but KS-22-α1 was able to inhibit them at a high level, generally over 80%, which is thought to reduce the odor intensity caused by indole and skatole by about one level.

[0168] [Table 27]

[0169] [Table 28]

[0170] [Table 29]

[0171] [Table 30]

[0172] [Table 31]

[0173] [Table 32]

[0174] [Table 33]

[0175] [Table 34]

[0176] [Table 35]

[0177] [Table 36]

[0178] It was clear that Control Treatment Agent 1 was effective against the fatty acids contained in stool odor, but was less effective against alkaline compounds such as ammonia, indole, and skatole, and it was shown that, depending on the situation, the amount of odorous substances may increase compared to when Control Treatment Agent 1 is not used.

[0179] The results of the measurements of n-butyric acid, n-valeric acid, isovaleric acid, indole, and skatole concentrations, as well as the inhibition rates relative to the odorant control after 24 hours and one week, are summarized below.

[0180] [Table 37]

[0181] To summarise the above test results, the basic performance of the treatment agent containing hydrated lime and pepper was such that a significant improvement could be achieved in the target volatile concentration of indole and skatole, and further improvement was also observed for fatty acids, which also performed well in the control treatment agent 1.

[0182] Next, to confirm the effect of combining slaked lime and pepper, the number of components was reduced and a study was conducted.

[0183] Specifically, the components shown below were added to the control (i), and the comfort level was evaluated in the same manner as above.

[0184] [Table 38]

[0185] [Table 39]

[0186] [Table 40]

[0187] [Table 41]

[0188] [Table 42]

[0189] [Table 43]

[0190] As can be seen from the above results, the combination of hydrated lime and pepper shows a significant or heterogeneous effect.

[0191] Next, the antibacterial / sterilizing effects of Samples A to C were evaluated below.

[0192] <Antibacterial / sterilizing effect evaluation> (Sample Preparation) Samples A to C were prepared by uniformly mixing the components having the following composition.

[0193] [Table 44]

[0194] [Table 45]

[0195] (bacterial species) The following three species of bacteria were selected for the measurement of antibacterial / bactericidal effects: Escherichia coli, Vibrio cholerae, and Clostridioides difficile. Escherichia coli is a facultative anaerobic gram-negative rod-shaped bacterium, and is the most frequently detected bacterium in hospital laboratories. Vibrio cholerae is also a gram-negative rod-shaped bacterium, but is a species that is often feared to spread in low-sanitary environments during disasters. Clostridioides difficile is a gram-positive rod-shaped bacterium that is a representative causative bacterium of opportunistic infections, and it forms spores and is resistant to various sterilization and disinfection methods, so it requires special attention in hospital infection control. The following five strains belonging to these three species were used for the measurement.

[0196] ·Escherichia coli: Standard strain ATCC25922 Clinical isolate (2022 1-1110, blood isolate) Vibrio cholerae: Clinical isolate 1 (2009 7-1320, P. aeruginosa isolate) Clinical isolate 2 (2010 8-1057, fecal isolate) Spore-forming bacteria (Clostridioides difficile): Clinical isolate (2021 8-68, fecal isolate) The above clinical isolate was obtained from an unspecified patient and maintained at the Chiba University Hospital MedTech Link Center. The above clinical isolate is not a novel microorganism. Therefore, it has not been deposited in a depository institution. However, the applicant is willing to distribute the clinical isolate according to the present invention to a third party if it falls under any of the items of Article 27-3 of the Enforcement Regulations of the Japanese Patent Act, provided that the relevant laws and regulations are observed.

[0197] (Bacteria sample preparation) Spore-forming bacteria (Clostridioides difficile): For spore-forming bacteria (Clostridioides difficile), sterile saline was autoclaved and the dissolved oxygen was removed to prepare a test bacterial solution with McFarland turbidity (Mcf) of 0.5. Next, 30 mg of each of the samples A to C prepared above was placed in a 1.5 mL microtube, and 1 mL of the test bacterial solution was added and mixed. The test bacterial solution was prepared by leaving it at room temperature (25°C; the same applies below) for the reaction time (30 minutes or 24 hours) shown in Table 45 below. The McFarland turbidity (Mcf) is a method for estimating the viable bacterial concentration of a bacterial solution from turbidity, and McF of 0.5 is 1 x 10 for spore-forming bacteria. 8 It corresponds to CFU / mL. In this case, CFU (colony forming unit) is the number of colonies that form when bacteria are inoculated into a solid medium for growth, and indicates the number of proliferative microbial cells contained in the inoculated microorganism.

[0198] After standing at room temperature for a specified time (30 minutes or 24 hours), the test bacteria liquid was mixed again and centrifuged at 3,000 rpm for 10 minutes to separate the supernatant. 10 μL of this supernatant was collected with a macropipette and inoculated into a medium using a semi-quantitative method using a platinum loop, and then incubated at 35°C for 48 hours in an anaerobic environment (H 2 [10%]:N 2 [10%]:CO 2 For the control bacterial solution to which no sample was added, 10 μL was taken with a micropipette immediately after the preparation of the test bacterial solution, and inoculated into the medium by the semi-quantitative method using a platinum loop. The control solution was incubated at 35°C in an anaerobic atmosphere (H 2 [10%]:N 2 [10%]:CO 2 The culture was performed in Anaerobic RS Blood Agar Medium (RS medium) (manufactured by Becton Dickinson Japan Co., Ltd.) for 48 hours. Each test was performed in duplicate.

[0199] When the test bacteria solution was incubated with Sample A for 30 minutes and compared with the control bacteria solution, a decrease in the number of bacteria was observed (see Figure 1). Therefore, in order to quantify the decrease in the number of bacteria, a separate incubation measurement was performed to calculate the number of bacteria using the method described below.

[0200] In the same manner as above, a control bacterial solution immediately after preparation, and control and test bacterial solutions that had been left to stand at room temperature for 30 minutes and 24 hours were prepared. These bacterial solutions were mixed again and then centrifuged at 3,000 rpm for 10 minutes to separate the supernatant. From this supernatant, a 10-fold dilution series (diluted bacterial solutions) was prepared using pre-autoclaved sterilized saline in the same manner as above, and 100 μL was taken from 1 mL of each diluted bacterial solution and inoculated onto a medium (Anello Columbia RS blood agar medium (RS medium) manufactured by Nippon Becton Dickinson Co., Ltd.) and incubated at 35°C for 4 days in an anaerobic (H 2 [10%]:N 2 [10%]:CO 2 The samples were cultured (anaerobic culture) in an aqueous solution containing 10% CO2 (80%) of ethanol (pH 7.0). After 4 days of culture, the number of surviving bacteria in the samples was evaluated from the number of colonies visually observed on each medium. The results are shown in Table 45 below. In Table 45, the action time of 0 minutes indicates the time immediately after preparation of the bacterial solution (no action of the sample or centrifugation had been performed). The numbers in parentheses indicate the ratio of the number of bacteria obtained after the action of each sample to the number of bacteria obtained from the control.

[0201] Escherichia coli and Vibrio cholerae: For Escherichia coli and Vibrio cholerae, test bacterial solutions with McFarland turbidimetric method (Mcf) of 0.5 were prepared using sterile saline. Next, 30 mg of each of the samples A to C prepared above was placed in a 1.5 mL microtube, after which 1 mL of each test bacterial solution was added and mixed, and the solution was left to stand at room temperature for the reaction time (30 minutes or 24 hours) shown in Table 45 below to prepare the test bacterial solution. The McFarland turbidimetric method (Mcf) is a method for estimating the viable cell concentration of a bacterial solution from turbidity, and McF of 0.5 is 1 x 10 for Escherichia coli. 8 CFU / ml and 1 × 10 7CFU (colony forming unit) is the number of colonies that form when bacteria are inoculated into a solid medium for growth, and indicates the number of proliferative microbial cells contained in the inoculated microorganism.

[0202] After standing at room temperature for a specified time (30 minutes or 24 hours), the test bacterial solution was mixed again and centrifuged at 3,000 rpm for 10 minutes to separate the supernatant. 10 μL of this supernatant was collected with a macropipette, inoculated into a medium by a semi-quantitative method using a platinum loop, and cultured in air at 35°C (atmosphere culture) for the period (1 day or 4 days) shown in Table A below. For the control bacterial solution to which no sample was added, 10 μL was collected with a macropipette immediately after preparation of the test bacterial solution, inoculated into a medium, and cultured in air at 35°C (atmosphere culture) for 1 day or 4 days. Escherichia coli was cultured in Poremedia (registered trademark) Drigalski modified medium (BTB medium) (manufactured by Eiken Chemical Co., Ltd.), and Vibrio cholerae was cultured in Trypticase (TM) soy 5% sheep blood agar medium (BA medium) (manufactured by Nippon Becton Dickinson Co., Ltd.). Each test was performed in duplicate.

[0203] After culturing for a given period (1 or 4 days), the number of colonies confirmed by visual inspection was examined. The results are shown in Table 46 below. In Table 46 below, "-" indicates that no growth was observed.

[0204] [Table 46]

[0205] As shown in Table 46 above, for spore-forming bacteria, the reduction in the number of bacteria compared to the control was only 25% to 82% after 30 minutes of exposure to each sample, and a 68% to 99.94% reduction in the number of bacteria was confirmed after 24 hours of exposure. This result is considered to be a higher antibacterial effect than the samples of the current product. In contrast, no bacterial growth was observed at all for E. coli and V. cholerae after 30 minutes of exposure to the reagent. Of these, in the case of E. coli, the Mcf 0.5=10 8 Since the CFU / mL, the bacterial solution at the start of the culture was 10 6 CFU / mL, but since no bacterial growth was observed after culture, it is believed that the number of bacteria was at least 10 6 It is considered that the control effect is more than CFU / mL (99.9999%). In addition, for cholera bacteria, Mcf 0.5 = 10 7 Since the CFU / mL, the maximum number of 5 CFU / mL, but as with E. coli, no growth was observed after incubation. 5 It is believed to have a control effect of more than 99.999% (CFU / mL). In the case of both E. coli and V. cholerae, no bacterial growth was observed even after 4 days of incubation, so it is believed that all bacteria were killed.

[0206] The difference in the results between the spore-forming bacteria (C. difficile) and Escherichia coli (E. coli) or Vibrio cholerae (V. cholerae) is presumably mainly due to the influence of the spores of the spore-forming bacteria. Considering that sterilization with disinfectants such as alcohol or benzalkonium chloride is ineffective against spores, and that spores cannot be completely inactivated even by boiling at 100°C (i.e., it is difficult to completely kill them), sample A of the present invention is expected to be clinically useful.

[0207] In this study, the reagent was applied in the bacterial solution, so it was suspended in the sample. For this reason, the centrifuged supernatant was used for the culture measurement. This centrifugation operation reduced the number of bacteria to about 1 / 100 for E. coli, about 1 / 10 to 1 / 100 for V. cholerae, and about 1 / 500 for C. difficile. In addition, leaving the bacterial solution for 24 hours reduced the number of bacteria to about 1 / 1 to 1 / 10 for E. coli, about 1 / 10 to 1 / 100 for V. cholerae, and about 1 / 10 for C. difficile.

[0208] Although the embodiments of the present invention have been described in detail, it is clear that the same are illustrative and exemplary, not restrictive, and the scope of the present invention should be interpreted by the appended claims.

[0209] The present invention encompasses the following aspects and configurations.

[0210] 1. A treatment agent for treating waste liquid, the treatment agent comprising hydrated lime and pepper.

[0211] 2. The treatment according to claim 1, wherein the pepper is not in the form of a piperine extract.

[0212] 3. The treatment agent according to 1 or 2, which contains a water-absorbent polymer.

[0213] 4. The treatment agent according to any one of 1. to 3., wherein the content (mass%) of the slaked lime is 0.1 to 40 mass%, and the content (mass%) of the pepper is 0.05 to 30 mass%.

[0214] 5. The treatment agent according to any one of 1. to 4., which contains zinc oxide.

[0215] 6. The treatment agent according to any one of 1. to 5., which contains at least one selected from the group consisting of lignin, bentonite and zeolite.

[0216] 7. The treatment agent according to any one of 1. to 6., further comprising humic acid.

[0217] 8. The treatment agent according to any one of 1. to 7., wherein the waste liquid contains excrement, blood, vomit or bodily fluids discharged from humans or animals.

[0218] 9. The treatment agent according to any one of 1. to 8., wherein the waste liquid contains at least one of indole and skatole as a malodorous component.

[0219] 10. A treatment agent according to any one of 1. to 9., which is used to suppress or inhibit spore germination or proliferation of spore-forming bacteria.

[0220] 11. The treatment agent according to claim 10, wherein the spore-forming bacterium is Clostridioides difficile.

[0221] 12. A method for suppressing or inhibiting spore germination or proliferation of spore-forming bacteria, comprising contacting a waste liquid with the treatment agent described in any one of 1. to 11.

Claims

1. A treatment agent for treating waste liquid, the treatment agent for suppressing malodor comprising slaked lime, pepper, and a water-absorbing polymer.

2. A treatment agent for treating waste liquid containing spore-forming bacteria so as to suppress or inhibit spore germination or proliferation, the treatment agent being an antibacterial / bactericidal agent comprising hydrated lime, pepper, and a water-absorbent polymer.

3. 3. The treatment of claim 1 or 2, wherein the pepper is not in the form of a piperine extract.

4. The treatment agent according to claim 1 or 2, wherein the content (mass%) of the slaked lime is 0.1 to 40% by mass, and the content (mass%) of the pepper is 0.05 to 30% by mass.

5. The treatment according to claim 1 or 2, which comprises zinc oxide.

6. The treatment agent according to claim 5 , which comprises at least one member selected from the group consisting of lignin, bentonite and zeolite.

7. The treatment according to claim 6 , further comprising humic acid.

8. The treatment agent according to claim 1 or 2, wherein the waste liquid comprises excrement, blood, vomit or bodily fluid discharged from a human or animal.

9. 3. The treatment agent according to claim 1, wherein the waste liquid contains at least one malodorous component selected from the group consisting of n-butyric acid, n-valeric acid, isovaleric acid, indole and skatole.

10. The treatment agent according to claim 2 , wherein the spore-forming bacterium is Clostridioides difficile.

11. A method for suppressing or inhibiting spore germination or proliferation of spore-forming bacteria, comprising contacting a waste liquid with the treating agent according to claim 2.

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