WO2021149581A1 - Dispositif de purification d'eau et procédé de purification d'eau - Google Patents

Dispositif de purification d'eau et procédé de purification d'eau Download PDF

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Publication number
WO2021149581A1
WO2021149581A1 PCT/JP2021/001031 JP2021001031W WO2021149581A1 WO 2021149581 A1 WO2021149581 A1 WO 2021149581A1 JP 2021001031 W JP2021001031 W JP 2021001031W WO 2021149581 A1 WO2021149581 A1 WO 2021149581A1
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WO
WIPO (PCT)
Prior art keywords
water
solid
chlorine
treated
water purification
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PCT/JP2021/001031
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English (en)
Japanese (ja)
Inventor
楓太 山口
俊輔 郡
洋輔 小中
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パナソニックＩｐマネジメント株式会社
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Publication of WO2021149581A1 publication Critical patent/WO2021149581A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D36/00—Filter circuits or combinations of filters with other separating devices
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56—Macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens

Definitions

  • the present invention relates to a water purification device and a water purification method.
  • the water quality of well water varies from region to region.
  • many metal components such as iron components may be dissolved in well water.
  • Such well water is not suitable for use as it is as domestic water such as drinking water. Therefore, it is preferable to use a water purification device to remove the metal component dissolved in the well water and purify it into water suitable for domestic use.
  • the water quality purification system has a primary water tank that stores raw water such as well water, a water quality improvement device that purifies the raw water in the primary water tank with ozone and hypochlorous acid, and a water quality improvement device that stores the purified water. It is equipped with a next water tank. Furthermore, the water purification system is installed between the pump that transfers the purified water in the primary water tank to the secondary water tank and the primary water tank and the secondary water tank, and is a filter that filters the purified water by the water quality improvement device. It includes a device and a control means for driving the pump.
  • the water quality purification system of Patent Document 1 is a system having extremely excellent purification performance, and has an advantage that the entire system can be miniaturized.
  • the water purification system described in Patent Document 1 is complicated to control, and further requires a plurality of water storage tanks, a circulation pump, and a water supply pump, so that the piping configuration becomes complicated. As a result, the water purification system has a problem that it becomes a very expensive system.
  • Patent Document 2 proposes a water purification system that solves the problems of the water purification system described in Patent Document 1.
  • the water purification system is equipped with a water pump and a solid chlorine-based chemical, and filters the solid chemical dissolver that oxidizes the water to be treated with the chlorine-based chemical and the water to be treated that has been oxidized by the solid chemical dissolver. It is provided with a filtering means to be used.
  • a water storage tank for storing the water to be treated filtered by the filtration means is provided.
  • the solid drug solubilizer is located on the downstream side of the water pump and the solid drug solubilizer.
  • a filtration means is provided between the water storage tank and the water storage tank.
  • Patent Document 2 Although the water purification system described in Patent Document 2 is provided with filtration means, fine particles in well water are not targeted for removal, and fine particles cannot be sufficiently removed. In addition, a water storage tank for storing the water to be treated filtered by the filtration means is indispensable, and the system is large-scale.
  • An object of the present invention is water that can efficiently remove fine particles such as sand and fine particles and metal components in water to be treated such as well water containing metal components, and can be miniaturized and reduced in cost.
  • the purpose is to provide a purification device.
  • Another object of the present invention is to provide a water purification method capable of efficiently removing fine particles such as sand and fine particles and metal components in water to be treated such as well water containing metal components.
  • the water purification device is a water purification pump that pumps water to be treated and a solid that agglomerates fine particles existing in the water to be treated pumped by the water pump.
  • a solid agent elution tank that contains a coagulant and a solid chlorine-based agent that oxidizes and insolubilizes metal components existing in the water to be treated, and elutes the solid coagulant and the solid chlorine-based agent into the water to be treated.
  • a filtration tank for filtering the fine particles aggregated by the solid flocculant and the metal component insolubilized by the solid chlorine-based agent.
  • the water purification method is a step of pumping the water to be treated by a pump, and a solid solid that aggregates the fine particles existing in the water to be treated by the water pumped by the pump.
  • a solid agent elution tank containing a coagulant and a solid chlorine-based agent that oxidizes and insolubilizes metal components existing in the water to be treated, and elutes the solid coagulant and the solid chlorine-based agent into the water to be treated. It includes a step of passing the mixture and a step of filtering fine particles aggregated by a solid flocculant and a metal component insolubilized by a solid chlorine-based chemical.
  • the water purification device of the present embodiment includes a water pump that pumps water to be treated.
  • a solid agent elution tank containing a solid coagulant that agglomerates fine particles existing in the water to be treated pumped by a water pump and a solid chlorine-based agent that oxidizes and insolubilizes metal components existing in the water to be treated.
  • the solid agent elution tank elutes a solid coagulant and a solid chlorine-based agent into the water to be treated.
  • it is provided with a filtration tank for filtering fine particles aggregated by a solid flocculant and metal components insolubilized by a solid chlorine-based agent.
  • the solid coagulant and the solid chlorine-based agent may be simply referred to as “aggregator” and “chlorine-based agent”, respectively.
  • the water to be treated pumped by the pumping pump passes through the solid agent elution tank.
  • the solid agent elution tank contains both a coagulant that agglomerates fine particles such as sand existing in the water to be treated and a chlorine-based chemical that oxidizes and insolubilizes metal components such as iron and manganese in the water to be treated. Then, when the water to be treated comes into contact with both, the flocculant and the chlorine-based chemical are eluted into the water to be treated. Further, the fine particles can be filtered by aggregating with the eluted flocculant, and the metal component can be filtered by being insolubilized by the eluted chlorine-based agent.
  • the fine particles and the metal component are not treated separately, but are both treated by passing through the solid agent elution tank.
  • the entire device can be downsized and the cost can be reduced.
  • the fine particles can be aggregated to a sufficiently large size by the flocculant, the amount of the filter medium used in the filter tank can be reduced, which contributes to the miniaturization of the filter tank.
  • the agglomerated fine particles and the insolubilized metal component are filtered in the filtration tank to purify the water.
  • the configuration of the water purification device of the present embodiment will be described in detail below.
  • the water purification device 10 shown in FIG. 1 includes a water pump 12, a solid agent elution tank 14, and a filtration tank 16 as main components.
  • the lower end of the main pipe 18 connected to the water pump 12 is located in a water source (well or the like) in which the water to be treated is stored, and when the water pump 12 is operated, the water to be treated is pumped up.
  • the main pipe 18 is connected to the filtration tank 16 via the flow rate adjusting unit 40. Further, the main pipe 18 is connected to the bypass pipe 20 at the connecting portion 30, and the bypass pipe 20 is connected to the solid agent elution tank 14 via the flow rate adjusting unit 42.
  • a pipe 22 is connected to the solid agent elution tank 14, and the pipe 22 is connected to the main pipe 18 at the connection portion 32.
  • the path through which the water to be treated flows is a path that branches from the main pipe 18 to the bypass pipe 20 and passes through the solid agent elution tank 14 to the filtration tank 16 and a route that directly reaches the filtration tank 16 from the main pipe 18. There is. Then, those paths are switched by the flow rate adjusting units 40 and 42. When purifying the water to be treated, the flow rate adjusting units 40 and 42 are switched so that the water to be treated flows into the path passing through the solid agent elution tank 14.
  • the water pump 12 is not particularly limited as long as it can pump up the water to be treated and send it to the solid agent elution tank 14.
  • an automatic pump having a built-in pressure switch can be used.
  • an automatic pump that operates when at least one of the flow rate adjusting unit 40 and the flow rate adjusting unit 42, which will be described later, is opened can be used.
  • the water pump 12 usually has a structure in which an impeller having wings is provided in the casing.
  • the water in the pump 12 is pushed out from the center of the impeller toward the outer circumference while receiving a force from the blades due to the rotation of the impeller.
  • the impeller gives the water a rotational speed, and the centrifugal force raises the pressure.
  • water flows from the center of the impeller to the outer periphery, so that the pressure at the center of the impeller becomes low and the water at the entrance of the impeller is drawn in.
  • the water pump 12 can deliver water by repeating this operation. However, at this time, water must always be present at the entrance of the impeller, and the suction side piping must be filled with water.
  • the water pump 12 is provided with a check valve on the discharge side and a foot valve on the suction side, and even if the water pump 12 is stopped, the water inside the water pump 12 and the suction pipe (main pipe 18) is provided. It is preferable that the structure is such that the water does not fall.
  • Solid agent elution tank contains a solid coagulant that agglomerates fine particles existing in the water to be treated, and a solid chlorine-based agent that oxidizes and insolubilizes metal components existing in the water to be treated. Then, when the water to be treated flows into the solid agent elution tank, the flocculant and the chlorine-based agent are eluted into the water to be treated and play their respective roles.
  • a solid chlorine-based agent and a solid flocculant will be described below.
  • Solid flocculant plays a role of aggregating fine particles such as sand existing in the water to be treated into agglomerates.
  • fine particles By forming the fine particles into agglomerates, the fine particles can be filtered by the filtration tank 16 installed downstream of the solid agent elution tank 14.
  • chitosan starch, polyethylene glycol (PEG), xanthan gum, polyamine, polydialyldimethylammonium chloride (PDADMAC), melamic acid colloid, polydicyandiamide, polyacrylic acid, polyarginsan sodium, cellulose, moringa, polyalginic acid , Polysilica iron (PSI), cationic starch, cationic guar gum, polylysine, polyglutamic acid and the like.
  • PEG polyethylene glycol
  • xanthan gum polyamine
  • PDADMAC polydialyldimethylammonium chloride
  • melamic acid colloid polydicyandiamide
  • polyacrylic acid polyarginsan sodium
  • cellulose moringa
  • moringa polyalginic acid
  • PSI Polysilica iron
  • cationic starch cationic guar gum
  • polylysine polyglutamic acid and the like.
  • Cationic polymer flocculants are chitosan, polysilica iron (PSI), cationic starch, cationic guar gum, polylysine, and polyglutamic acid. Since these cationic polymer flocculants adsorb anionic suspended solids (fine particles) such as sand, the effect of coagulating anionic suspended solids is higher than that of nonionic polymer flocculants. ..
  • the solid flocculant preferably has a sustained release property that elutes over time.
  • Solid chlorine-based chemicals causes an oxidizing action on metal components such as iron and manganese in the water to be treated.
  • metal component such as iron and manganese
  • the metal component is a divalent iron ion
  • it has an action of oxidizing to a trivalent iron ion. That is, it plays a role of oxidizing the iron component (iron ion (II)) to become insoluble iron hydroxide (Fe (OH) 3).
  • II iron ion
  • Fe (OH) 3 insoluble iron hydroxide
  • chlorinated agents include sodium hypochlorite, calcium hypochlorite, chlorinated isocyanuric acid and the like.
  • bleaching powder effective chlorine 30%
  • highly bleaching powder effective chlorine 70%
  • chlorinated isocyanuric acid sodium trichloroisocyanurate, potassium trichloroisocyanurate, sodium dichloroisocyanurate, or potassium dichloroisocyanurate
  • the inorganic highly bleached powder has a very high solubility in the water to be treated W, so that it can exert a high oxidizing action.
  • the solid chlorine-based drug preferably has a sustained release property that elutes over time.
  • the above solid flocculants and solid chlorine-based agents are all solid, but the specific shapes are tablet-shaped, spherical, cubic, rectangular parallelepiped, granular, columnar, heart, clover, and star. The shape and the like can be mentioned.
  • the solid agent elution tank 14 is not limited to the one shown in FIG. FIG. 2 (A) shows the appearance of the solid agent elution tank 14, FIG. 2 (B) shows the state of the solid agent elution tank 14 as viewed from above, and FIG. The cross section along the C line is shown.
  • FIG. 2 shows the lid arranged on the upper part of the container body 15 is not drawn.
  • a tablet-shaped flocculant 50 and a tablet-shaped chlorine-based drug 52 are held in a holder (not shown) in the solid agent elution tank 14. More specifically, as shown in FIG.
  • the tablet-shaped flocculant 50 when viewed from above, the tablet-shaped flocculant 50 is located at one location, the tablet-shaped chlorine-based agent 52 is located at two locations, and the circumference of the inner surface of the container body 15. It is evenly spaced and held over. Further, in the vertical direction of the solid agent elution tank 14, two tablet-shaped flocculants 50 are retained as shown in FIG. 2C, and two tablet-shaped chlorine-based agents 52 are similarly retained. Has been done. That is, in the solid agent elution tank 14 shown in FIG. 2, two tablet-shaped flocculants 50 are held, and four tablet-shaped chlorine-based chemicals 52 are held.
  • the water to be treated flows into the solid agent elution tank 14 shown in FIG. 2 from above and is discharged from below. Then, the tablet-shaped flocculant 50 and the tablet-shaped chlorine-based agent 52 are eluted in the water to be treated that has flowed into the solid agent elution tank 14, the fine particles are coagulated, and the metal component is insolubilized.
  • the tablet-shaped flocculant 50 and the tablet-shaped chlorine-based agent 52 were neatly held in the container body 15 by the holder, but it is not always necessary to hold the tablet-shaped flocculant 52 by the holder. It may be randomly put into the container body 15. Further, the number of the tablet-shaped flocculant 50 and the tablet-shaped chlorine-based agent 52 is also arbitrary, and can be appropriately adjusted as needed. The same applies to shapes other than tablet-shaped.
  • the content ratio (mass ratio) of the solid chlorine-based agent and the solid coagulant is 50: 1 to 50: 1 from the viewpoint of sufficiently performing the coagulation of fine particles and the insolubilization of metal components. It is preferably 5: 1, more preferably 20: 1 to 5: 1. It is practical that the content ratio is 10: 1.
  • the chlorine concentration is 5 ppm and the flocculant concentration is 0.5 ppm
  • the chlorine concentration is equal to or less than the standard value of the chlorine concentration in drinking water in Japan, so that the chlorine concentration is downstream of the solid agent elution tank 14. No means of removing chlorine is required.
  • the surface area of the chlorine-based chemical set in the solid agent elution tank 14 is larger than the surface area of the coagulant. It is preferable to set it so that it also becomes large.
  • each of the chlorine-based agent and the flocculant it is preferable to set in consideration of the solubility and / or dissolution rate of each of the chlorine-based agent and the flocculant. For example, it is preferable to set the surface area of each agent based on the amount to be dissolved in water per unit time.
  • FIG. 3 is a graph showing the chlorine-based drug concentration (indicated by A in FIG. 3) and the flocculant concentration (indicated by B in FIG. 3) with the passage of time.
  • the chlorine-based drug concentration and the flocculant concentration are simultaneously set to 0 after a lapse of a certain period of time.
  • the chlorine-based agent and the flocculant are all consumed at the same time, both can be replenished at the same time.
  • the volume of the solid chlorine-based drug and the volume of the solid flocculant are not the same, but the volume of the solid chlorine-based drug set to a high concentration as described above is the volume of the solid flocculant. Is preferably larger than.
  • the chlorine-based chemicals and the flocculant are completely consumed at the same time, but they may be at about the same time.
  • the active ingredient in the solid chlorine-based drug and the active ingredient in the solid flocculant are both 90% or more.
  • the active ingredient means a component of only a chlorine-based agent or a coagulant in a solid chlorine-based agent or a solid flocculant, excluding a binder or the like used for solidifying.
  • both the agglutination of fine particles and the insolubilization of metal components are performed in one solid agent elution tank. Since there is only one solid agent elution tank, the flow rate of the water to be treated with respect to the chlorine-based agent and the coagulant is constant, and it becomes easy to control the concentration of the solid chlorine-based agent and the solid coagulant.
  • the filtration tank 16 may be in any form as long as the solid-liquid separation is possible by filtering the aggregated fine particles and the insolubilized metal component in the solid agent elution tank 14.
  • the filtration tank 16 using the granular filter medium will be described, but the present embodiment is not limited thereto.
  • the purpose of the granular filter medium is to capture and remove the agglomerated fine particles and the insolubilized metal component by passing through the solid agent elution tank 14.
  • particles having a surface potential that are adsorbed on the granular filter medium particles having a particle diameter of about 1 to 10 ⁇ m, and chromaticity can be removed depending on the presence of ions and the like in the water to be treated.
  • a filter medium suitable for the object to be removed such as filtered sand or a pellet-shaped fiber filter medium, can be used.
  • the material of the granular filter medium may be, for example, sand, anthracite, garnet, ceramics, granular activated carbon, iron oxyhydroxide, manganese sand, or the like, which has a hardness that does not easily deform under pressure.
  • activated carbon can adsorb chlorine, chlorine derived from chlorine-based chemicals in the solid agent elution tank can be removed. It is preferable to use a particle size having a particle size of, for example, 0.3 to 5.0 mm and a uniformity coefficient of 1.2 to 2.0.
  • the specific gravity of the granular filter medium differs depending on the material, for example, about 2.5 to 2.7 g / cm 3 for sand, 1.4 to 1.8 g / cm 3 for anthracite, and 3 for garnet. It is .8 to 4.1 g / cm 3 .
  • the multi-layer filtration method in which a plurality of types of filter media are mixed and used is a method in which particles having different sizes are laminated in order from the bottom as a layer to be filtered by utilizing such a difference in specific densities. In the multi-layer filtration method, it is common to mix particles having a large specific density and a small size and particles having a small specific density and a large size to form a multi-layer structure.
  • the multi-layer filtration method is preferable because it has advantages such as high filtration efficiency per unit volume and low head loss as compared with using a single type of filter medium.
  • the granular filter medium for example, 0.3 mm of garnet, 0.6 mm of sand, and 1.0 mm of anthracite are mixed at a ratio of 2: 1: 1 and used, depending on the particle characteristics of the turbidity. It is desirable to adjust the mixing ratio and particle size.
  • the solid agent elution tank 14 and the filtration tank 16 described above are directly connected via a pipe. That is, it is preferable that the solid agent elution tank 14 and the filtration tank 16 are directly connected by a pipe without providing a water storage tank or the like between the solid agent elution tank 14 and the filtration tank 16.
  • the form shown in FIG. 4 is a form in which well water (purified water) purified by the water purification device 10 is stored in a water storage tank in advance, and the water stored in the water storage tank is used when necessary.
  • a pipe 62 that circulates with well water and a pipe 64 that leads to a water storage tank 60 installed on the roof 72 are connected to each other.
  • a pipe connected to a faucet or the like inside the building 70 is connected to the lower part of the water storage tank 60.
  • the well water is purified in advance by the water purification device 10 and stored in the water storage tank 60. Then, when the user opens the faucet or the like in the building 70, the purified water stored in the water storage tank 60 flows and is used.
  • the form shown in FIG. 5 is a form in which the well water previously stored in the water storage tank is purified by the water purification device 10 when necessary and used.
  • one of the pipes 62 is connected to the upper part of the water storage tank 60, and the other of the pipes 62 is immersed in well water.
  • a water pump 66 for pumping well water is installed in the pipe 62, and the well water pumped by the water pump 66 is directly charged into the water storage tank 60 and stored.
  • one of the pipes 68 is connected to the lower part of the water storage tank 60, and the other of the pipes 68 is connected to a faucet inside the building 70 or the like.
  • a water purification device 10 is arranged in the middle of the pipe 68, and when the user uses water, the well water stored in the water storage tank 60 is purified by the water purification device 10 and used.
  • the water purification method of the present embodiment includes a step of pumping water to be treated by a water pump (hereinafter referred to as “step A”). In addition, it includes a step of passing the water to be treated pumped by the water pump through the solid agent elution tank (hereinafter referred to as “step B").
  • the solid agent elution tank contains a solid coagulant that agglomerates fine particles existing in the water to be treated and a solid chlorine-based agent that oxidizes and insolubilizes the metal component existing in the water to be treated, and is contained in the water to be treated. Elute the solid flocculant and the solid chlorine-based agent.
  • the present invention includes a step of filtering fine particles aggregated by a solid flocculant and a metal component insolubilized by a solid chlorine-based agent (hereinafter referred to as “step C”).
  • the water purification method of the present embodiment can be executed by, for example, the water purification device of the present embodiment described above, but is not limited to the water purification device.
  • the pump, the solid agent elution tank containing the solid coagulant and the solid chlorine-based agent are the same as those described in the water purification apparatus of the present embodiment described above.
  • the step of filtering the fine particles aggregated by the solid flocculant and the metal component insolubilized by the solid chlorine-based chemical can be carried out in the filtration tank of the water purification apparatus of the present embodiment described above. Hereinafter, each step will be described.
  • Step A is a step of pumping the water to be treated by a pump. That is, the water to be treated in the water source (well, etc.) in which the water to be treated is stored is pumped up by the pump. Since the pump has already been described, the description thereof will be omitted here.
  • step B the water to be treated pumped by the water pump is a solid flocculant that agglomerates fine particles existing in the water to be treated, and a solid chlorine system that oxidizes and insolubilizes the metal components existing in the water to be treated.
  • This is a step of passing a solid agent elution tank containing a drug. That is, it is a step of passing the water to be treated pumped up in the step A through the solid agent elution tank described in the water purification apparatus of the present embodiment.
  • step B when the water to be treated passes through the solid agent elution tank, as described above, the fine particles in the water to be treated are aggregated and the metal component is insolubilized by oxidation. Is possible.
  • Step C is a step of filtering the fine particles aggregated by the solid flocculant and the metal component insolubilized by the solid chlorine-based agent. That is, in step B, the agglomerated fine particles and the insolubilized metal component are filtered by the filtration tank of the form described in the water purification apparatus of this embodiment.
  • a water purification device capable of efficiently removing fine particles such as sand and fine particles and metal components in water to be treated such as well water containing metal components, and capable of miniaturization and cost reduction.
  • a water purification method capable of efficiently removing fine particles such as sand and fine particles and metal components in water to be treated such as well water containing metal components.
  • Water purification device 12 Water pump 14 Solid agent elution tank 16 Filtration tank 50 Solid coagulant 52 Solid chlorine-based chemicals

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

Un dispositif de purification d'eau équipé de : une pompe d'extraction d'eau qui peut aspirer de l'eau d'intérêt ; un réservoir d'élution d'agent solide qui contient un coagulant solide capable de coaguler des microparticules dans l'eau d'intérêt aspirée par la pompe d'extraction d'eau et un agent chimique à base de chlore solide capable d'oxyder un composant métallique dans l'eau d'intérêt pour rendre le composant métallique insoluble et qui peut éluer le coagulant solide et l'agent chimique à base de chlore solide dans l'eau d'intérêt ; et un réservoir de filtration qui peut filtrer les microparticules qui ont été coagulées par le coagulant solide et le composant métallique qui a été rendu insoluble par l'agent chimique à base de chlore solide.
PCT/JP2021/001031 2020-01-23 2021-01-14 Dispositif de purification d'eau et procédé de purification d'eau WO2021149581A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023162580A1 (fr) * 2022-02-22 2023-08-31 パナソニックＩｐマネジメント株式会社 Agent chimique solide, procédé de production d'agent chimique solide et dispositif de traitement d'eau utilisant ledit agent

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Publication number Priority date Publication date Assignee Title
JPS5132896B1 (fr) * 1970-10-27 1976-09-16
JPH06198289A (ja) * 1992-11-12 1994-07-19 Manac Inc 廃液処理用組成物及び廃液の処理方法
JP2000343082A (ja) * 1999-06-09 2000-12-12 Matsushita Electric Ind Co Ltd 循環温浴器
JP2005021765A (ja) * 2003-06-30 2005-01-27 Touzai Kagaku Sangyo Kk 水処理方法
WO2013002128A1 (fr) * 2011-06-28 2013-01-03 日本曹達株式会社 Composition d'hypochlorure de calcium
WO2019038994A1 (fr) * 2017-08-25 2019-02-28 パナソニックＩｐマネジメント株式会社 Dispositif de traitement d'eau et système de traitement d'eau

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5132896B1 (fr) * 1970-10-27 1976-09-16
JPH06198289A (ja) * 1992-11-12 1994-07-19 Manac Inc 廃液処理用組成物及び廃液の処理方法
JP2000343082A (ja) * 1999-06-09 2000-12-12 Matsushita Electric Ind Co Ltd 循環温浴器
JP2005021765A (ja) * 2003-06-30 2005-01-27 Touzai Kagaku Sangyo Kk 水処理方法
WO2013002128A1 (fr) * 2011-06-28 2013-01-03 日本曹達株式会社 Composition d'hypochlorure de calcium
WO2019038994A1 (fr) * 2017-08-25 2019-02-28 パナソニックＩｐマネジメント株式会社 Dispositif de traitement d'eau et système de traitement d'eau

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WO2023162580A1 (fr) * 2022-02-22 2023-08-31 パナソニックＩｐマネジメント株式会社 Agent chimique solide, procédé de production d'agent chimique solide et dispositif de traitement d'eau utilisant ledit agent

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