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WO2013038766A1 - Appareil central de purification d'eau et système de purification d'eau - Google Patents

Appareil central de purification d'eau et système de purification d'eau Download PDF

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Publication number
WO2013038766A1
WO2013038766A1 PCT/JP2012/065874 JP2012065874W WO2013038766A1 WO 2013038766 A1 WO2013038766 A1 WO 2013038766A1 JP 2012065874 W JP2012065874 W JP 2012065874W WO 2013038766 A1 WO2013038766 A1 WO 2013038766A1
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WIPO (PCT)
Prior art keywords
water
purification
chlorine
water purification
central
Prior art date
Application number
PCT/JP2012/065874
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English (en)
Japanese (ja)
Inventor
高城　壽雄
丸木　祐治
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株式会社タカギ
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Publication of WO2013038766A1 publication Critical patent/WO2013038766A1/fr

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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
    • E03B7/074—Arrangement of water treatment 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage 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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
    • 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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • 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
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • 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
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/36—Organic compounds containing halogen
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/29—Chlorine compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/40—Liquid flow rate
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/04—Flow arrangements
    • C02F2301/043—Treatment of partial or bypass streams
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/02—Odour removal or prevention of malodour
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/16—Regeneration of sorbents, filters
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/18—Removal of treatment agents after treatment
    • C02F2303/185—The treatment agent being halogen or a halogenated compound
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2307/00—Location of water treatment or water treatment device
    • C02F2307/06—Mounted on or being part of a faucet, shower handle or showerhead
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2307/00—Location of water treatment or water treatment device
    • C02F2307/14—Treatment of water in water supply networks, e.g. to prevent bacterial growth

Definitions

  • the present invention relates to a central water purifier for purifying tap water and supplying purified water to a plurality of households or water purifiers and a water purifying system using the same.
  • the conventional water purification system consists of a central water purification device installed near the entrance for introducing tap water, etc. into the building, pipes attached to the house, etc., and the kitchen, bathroom, washroom, laundry, It consists of water purifiers such as faucets provided in toilets, water heaters and outdoor water intakes.
  • the central water purification apparatus is arranged connected to a water pipe branched from a water main and attached to a house.
  • the central water purification device contains a purification material composed of activated carbon, ceramic filter, microfiltration membrane, etc. Tap water supplied from the main water pipe passes through this purification material, residual chlorine, turbidity, Metal ions, microorganisms, chemical substances, etc. are removed to obtain purified water.
  • the purified water treated by the central water purification apparatus passed through the pipes and was supplied to each household water purifier and each water purifying equipment provided at the place where the water was used.
  • the water quality of the purified water purified by the central water purification device is guaranteed immediately after being processed by the central water purification device, but bacteria are propagated in the pipes up to the water purification equipment, There is a possibility that bacteria and impurities may invade from the joint portion and the like, and there is a possibility that it is not suitable for drinking at the time of use.
  • Patent Document 1 discloses that a secondary water provided in a water purifying apparatus is used to remove other impurities without removing residual chlorine with a central water purification device, or remove only a part of residual chlorine.
  • a water purification system is described that can maintain the sterilization effect of purified water in the pipes up to the water purification equipment by removing residual chlorine with a water purification device.
  • Activated carbon is suitable for removing impurities in tap water, but activated carbon also removes residual chlorine in tap water, so activated carbon cannot be used in the central water purification apparatus of Patent Document 1, and impurities other than chlorine. Water that has not been removed flows into the pipes up to the water purifying equipment. In addition, even when activated carbon is used as part of the central water purification device, water that has not passed through activated carbon is also supplied downstream, so water that has not been freed of impurities other than chlorine is also piped to the water purification equipment. Will be swept away.
  • the rate of purification in the secondary water purification device increases, the amount of filtered water per unit time is insufficient, and the product life of the purification material used in the secondary water purification device is shortened. Or the secondary water purification device had to be enlarged.
  • the secondary water purification device is not used in each household or each water purifier, or if the water purifier cartridge is removed and used, water containing impurities that have not been sufficiently filtered by the central water purifier There was also a risk of water being discharged.
  • the present invention has been made to solve the above-mentioned problems, can remove impurities from tap water, and can maintain the quality of purified water up to the water purification equipment used by the user. It is an object to provide a central water purification apparatus and a water purification system using the same.
  • a first invention is a central water purification apparatus that is disposed at an entrance of tap water to one or a plurality of buildings, purifies the introduced tap water, and supplies the purified water to a plurality of water purification appliances. Thus, residual chlorine and other impurities are removed from the tap water, and then chlorine is added to the purified water.
  • an introduction section for introducing the tap water from a water pipe, a purification section for removing residual chlorine and mold odor from the tap water through the purification material containing activated carbon, and the purification section. It is characterized by comprising a chlorine addition part for adding chlorine to the purified water disposed on the downstream side and treated by the purification part, and a delivery part for sending the purified water to which this chlorine has been added.
  • a third invention is a central water purification apparatus that purifies the introduced tap water and supplies it to a plurality of water purification appliances, and passes the purification material through the tap water to remove residual chlorine and other impurities.
  • Chlorine water purification system that adds chlorine to purified water and sends it to each of the above-mentioned water purification appliances, and the above purification material to the raw water system and / or tap water that is sent to tap water usage equipment without passing the purification material to tap water
  • a water purification system for removing residual chlorine and sending it to the tap water-using device.
  • 4th invention is the secondary water purifier which removes chlorine from the central water purifier of 1st invention, and the said water purifier use instrument, and passes a secondary purifier and supplied from the said central water purifier It is a water purification system characterized by having an apparatus.
  • 5th invention is the secondary water purification system which removes chlorine from the central water purifier of 2nd invention, and the said water purifier use instrument, and passes a secondary purification material, and removes chlorine from the purified water supplied from the said central water purifier
  • the said secondary purification material provided with an apparatus and the activated carbon is a water purification system characterized by removing mold odor from the said purified water.
  • the sixth invention is characterized in that it has a raw water system that sends tap water to a tap water use device without going through the central water purification apparatus.
  • a central water purification apparatus that is disposed at an inlet of tap water to one or a plurality of buildings, purifies the introduced tap water, and supplies the purified water to a plurality of water purification appliances. Passing through and removing residual chlorine and other impurities from the tap water, and then adding chlorine to this purified water prevents bacteria from growing in the piping from the central water purification device to the water purification equipment. In addition to being able to supply safe purified water, the rate of purification in the secondary water purification device can be reduced and the life can be extended.
  • cleaning Residual chlorine and mold odor were removed by providing a chlorine addition part for adding chlorine to the purified water treated by the purification part disposed downstream of the part and a delivery part for sending the purified water to which this chlorine was added.
  • Purified water can be provided.
  • a central water purification apparatus that purifies the introduced tap water and supplies the purified water to a plurality of water purification appliances, removes residual chlorine and other impurities by passing the purification material through the tap water, Next, chlorine is added to this purified water, and the purified chlorine system that is sent to each of the purified water use devices, and the raw water system and / or the tap water that is sent to the used tap water device without passing the purification material to the tap water, Purified water without tap water or chlorine added to tap water use equipment that does not require safe water purification by having a water purification system that passes the purification material to remove residual chlorine and sends it to the above tap water use equipment
  • the consumption of purified water to which chlorine has been added can be reduced by extending the service life of the central water purification device and the running cost of the water purification system.
  • the secondary water purifier which removes chlorine from the central water purifier of 1st invention, and the said purified water use instrument, and removes chlorine from the purified water supplied from the said central water purifier by the secondary purifier
  • the secondary water purifier In addition to being able to prevent bacteria from growing in the piping from the central water purification device to the water purification equipment, remove chlorine with the secondary water purification device, and supply safe water to the user. It is possible to extend the life by reducing the purification rate in the secondary water purification device.
  • the said water purifier apparatus distributes to the central water purifier of 2nd invention, and the said water purifier apparatus, passes a secondary purification material, and removes chlorine from the purified water supplied from the said central water purifier.
  • the said secondary purification material provided with a secondary water purification apparatus and containing activated carbon can provide the purified water from which the residual chlorine and the mold odor were removed by removing the mold odor from the said purified water.
  • the sixth aspect of the present invention by having a raw water system that sends tap water to the tap water use equipment without going through the central water purification apparatus, tap water is supplied to the tap water use equipment that does not require safe water purification. By doing so, consumption of purified water to which chlorine is added can be reduced, and the running cost of the water purification system can be reduced while extending the life of the central water purification device.
  • This water purification system is for purifying and using tap water with a plurality of appliances provided inside and outside buildings such as buildings, detached houses, and apartment houses.
  • a central water purification device 2 is arranged so as to be connected to a water pipe branched from a water main and attached to a building 1, and all tap water used in the building 1 is disposed. It passes through the central water purification device 2.
  • This central water purification device 2 has a built-in purification material, removes residual chlorine and other impurities from the introduced tap water, and then adds chlorine to the purified water thus obtained to use the purified water ).
  • the water meter which is a measuring device which measures the usage-amount of water is installed in the central water purifier 2, the downstream of the central water purifier 2, for example, You may install in each home or office individually.
  • the water purification equipment 3 is a faucet 4, 8, 9 installed in the kitchen, bathroom, washroom, laundry, toilet, water heater, outdoor water intake, etc., which are the water purification use points of the building, water heater 5, toilet 6, The washing machine 7 etc. can be illustrated.
  • Each water purifying apparatus 3 is provided with a secondary water purifier for removing chlorine added from the purified water supplied from the central water purifier 2, and can be used by discharging the purified water from which chlorine has been removed. It is like that. From the central water purification apparatus 2 to each water purification use instrument, it is connected by piping (chlorine water purification system 10).
  • the water purification system of the present invention includes a central water purification device 2 disposed at the entrance of a water pipe of an apartment building such as an apartment or an apartment, and a secondary water purification device disposed at each home or office.
  • a water purification system having a central water purifier arranged at the entrance of water pipes to a plurality of detached houses and supplying purified water collectively to the plurality of detached houses, and a secondary water purification apparatus disposed in each detached house, and one or more Also included are secondary water purifiers that are located in detached houses and / or one or more collective buildings.
  • the detached house includes not only a residential detached house but also an office detached house.
  • the central water purification apparatus of this invention can be used for the various water purification systems illustrated above. Furthermore, when there is much usage-amount of purified water, you may employ
  • the central water purification apparatus 2 includes a purification material (activated carbon filter 11) made of activated carbon and a purification material (membrane module 13) made of a hollow fiber membrane. Residual chlorine, musty odor, turbidity, metal ions, microorganisms, and chemical substances can be removed from tap water that has passed through.
  • the purification material made of activated carbon is formed into a cylindrical shape as a whole around the inner core 11a having a water permeability formed by molding a synthetic resin, and the outer nonwoven fabric 11b and the inner nonwoven fabric 11d.
  • the activated carbon layer 11c sandwiched between the two is disposed, and the activated carbon filter 11 has a closed bottom surface.
  • the activated carbon layer 11c uses activated carbon molded into a cylindrical shape, or is filled with granular activated carbon so as to have a cylindrical shape as a whole.
  • this activated carbon filter 11 is accommodated in a case (not shown), and the tap water introduced into the case passes through the activated carbon filter 11 from the outer peripheral side to the central portion, and is downstream. Sent to the side. When the introduced tap water passes through the activated carbon filter 11, residual chlorine and mold odor contained in the tap water are removed.
  • the purification material which consists of activated carbon is not limited to the form of the above-mentioned activated carbon filter, The other form which uses activated carbon as a purification material may be sufficient.
  • Residual chlorine is chlorine introduced into water at a water purification plant, and contains hypochlorous acid and hypochlorite ions generated when chlorine is dissolved in water.
  • the purification material containing activated carbon also removes trihalomethane such as chloroform and bromoform generated from chlorine combined with organic substances in water from tap water.
  • the concentration of chlorine in tap water is about 0.6 to 1.3 mg / l.
  • the purification water for example, activated carbon filter 11
  • the residual chlorine removal rate by the activated carbon filter 11 is preferably 60% or more, more preferably 70% or more, particularly preferably 80% or more.
  • concentration of the residual chlorine contained in the purification material which consists of activated carbon, for example, the activated carbon filter 11, can be made into about 0.2 mg / l or less.
  • concentration of residual chlorine contained in water is more preferably 0.1 mg / l or less, and even more preferably 0.05 mg / l or less.
  • the residual chlorine concentration or chlorine concentration refers to the total concentration of chlorine molecules, hypochlorous acid, and hypochlorite ions in water.
  • mold odor means diosmin ((4S, 4aS, 8aR) -4,8a-dimethyl-1,2,3,4,5,6,7,8-octahydronaphthalene- 4a-ol) and / or 2-MIB (2-methylisoborneol) is removed from tap water.
  • a purification material comprising a hollow fiber membrane
  • a number of cylindrical hollow fiber membranes 12 having a uniform length are used, and a membrane module 13 accommodated in parallel in a cylindrical case is formed.
  • the hollow fiber membrane 12 used is made of polyvinylidene fluoride (PVDF) having high strength and excellent chemical resistance, and a membrane having a molecular weight cut off of 150,000 Da is used.
  • PVDF polyvinylidene fluoride
  • RO membrane As the purification material of the central water purification device 2, RO membrane, UF membrane, activated carbon, zeolite, hollow fiber membrane, etc. can be used, and it is preferable to use at least activated carbon to remove the mold odor, and impurities In order to sufficiently perform the filtration, it is preferable to use a hollow fiber membrane.
  • activated carbon and a hollow fiber membrane are preferably used in combination.
  • each purification material is stored in a separate member to be an individual purification member, and the individual purification members are connected to each other by a pipe or the like and disposed in the central water purification apparatus 2, two or more purification materials are 1 It may be stored in one member to form a collective purification member, and the collective purification member may be disposed in the central water purification apparatus 2. Further, the individual purification member and the collective purification member may be used in combination, and may be arranged in the central water purification apparatus 2 by connecting them with a pipe or the like.
  • the activated carbon and the hollow fiber membrane are stored in one member to form a collective purification member, it is preferable that the water passing through the purification member always passes through both the activated carbon and the hollow fiber membrane. .
  • the activated carbon upstream type member having activated carbon as the upstream side and the hollow fiber membrane as the downstream side may be a hollow fiber membrane upstream type member having the hollow fiber membrane as the upstream side and activated carbon as the downstream side.
  • the central water purification apparatus has a chlorine addition unit including a hypochlorous acid tank 14 and a metering pump 15.
  • the hypochlorous acid tank 14 stores a sodium hypochlorite aqueous solution, and a purification material (for example, activated carbon filter 11) made of activated carbon and a purification material using a hollow fiber membrane via a metering pump 15 and a pipe.
  • Sodium hypochlorite can be added to the purified water that has passed (for example, the membrane module 13).
  • the concentration of the solution in the hypochlorous acid tank 14 and the operation of the metering pump 15 are adjusted so that the chlorine concentration of the purified water to which sodium hypochlorite is added becomes 0.3 to 1 mg / l.
  • the chlorine concentration of purified water to which sodium hypochlorite has been added is 0.4 mg / l or more, especially 0.5 mg as the lower limit value because of the relationship between sterilization power and ease of chlorine removal in the secondary water purification device.
  • / L or more, and the upper limit is further preferably 0.8 mg / l or less, particularly preferably 0.7 mg / l or less.
  • a hypochlorous acid aqueous solution may be stored in a tank instead of the sodium hypochlorite aqueous solution, and this may be added to the purified water by the metering pump 15.
  • increasing hypochlorous acid or hypochlorite ion in water is called adding chlorine.
  • the secondary water purifier to which the purified water to which chlorine is added is supplied is attached to the water purification apparatus 3 provided inside or outside the building, or is provided integrally therewith.
  • the secondary water purification apparatus includes a secondary purification material capable of removing at least chlorine in the purified water. It is preferable to remove 60% or more, further 70% or more, particularly 80% or more of the residual chlorine by this secondary water purifier.
  • the concentration of residual chlorine contained in the water that has passed through the secondary water purifier is 0.2 mg / l or less, 0.1 mg / l or less, further 0.1 mg / l or less, particularly 0.05 mg / l or less. It is preferable to do so.
  • Residual chlorine concentration or chlorine concentration means the total concentration of chlorine molecules, hypochlorous acid, and hypochlorite ions in water.
  • a shower head as disclosed in, for example, Japanese Patent No. 3799007 and Japanese Patent No. 4648507 can be used for this secondary water purification apparatus.
  • the secondary water purifier may be integrated with the faucet (equipment for water purification) or may be externally attached. However, in order to reduce the installation space, the secondary water purifier is used. Is preferred.
  • impurities are removed in advance by the central water purification device, and the secondary water purification device only needs to remove at least chlorine.
  • the secondary water purification apparatus incorporates a secondary purification material that removes chlorine and other impurities from the purified water.
  • a secondary purification material that removes chlorine and other impurities from the purified water.
  • activated carbon RO membrane, sterilizing ceramic, ion exchange resin, zeolite, calcium sulfite, etc.
  • activated carbon since calcium sulfite dissolves in water to remove chlorine, it is preferable to use activated carbon for the water purification apparatus 3 used for long-term drinking.
  • the secondary purification material containing activated carbon is used, the mold odor can be further removed from the purified water.
  • the secondary water purification device in order to suppress the increase in the size of the secondary water purification device, increase the chlorine removal capacity per unit water volume, and suppress the decrease in the chlorine removal capacity over time of use, as the secondary purification material, short fibrous activated carbon and It is preferable to use in combination with particulate activated carbon.
  • the purified water already purified by the central water purification device 2 is supplied to the secondary water purification device, it is sufficient that at least the chlorine can be removed by the secondary water purification device, and the purification required for the secondary purification material. Capabilities can be relatively small.
  • a path switching valve may be provided.
  • the tap water supplied from the water main passes through a purification material (for example, activated carbon filter 11) made of activated carbon to remove residual chlorine and mold odor, and flows into the raw water tank 16, where You can also save.
  • a pipe from the flocculant tank 17 is connected in the middle of the pipe from the purification material (for example, the activated carbon filter 11) made of activated carbon to the raw water tank 16.
  • the flocculant tank 17 stores a flocculant that is a chemical for aggregating and removing unnecessary ionic components such as heavy metals and nitrite nitrogen in water, and is added to the water by the flocculant pump 18. .
  • Water in the raw water tank 16 is sent by a raw water pump 19 to a purification material (for example, a membrane module 13) made of a hollow fiber membrane, and protozoa, bacteria, and turbidity are removed by the hollow fiber membrane 12.
  • a pipe from the hypochlorous acid tank 14 is connected in the middle of the pipe for sending purified water from the purification material (for example, the membrane module 13) made of a hollow fiber membrane to the outside of the central water purification device 2.
  • Sodium hypochlorite can be added to achieve a constant chlorine concentration.
  • each purified water use equipment 3 to which purified water is supplied from the central water purification apparatus 2 via a pipe at least chlorine is removed when the purified water passes through the secondary purification material of the secondary water purification apparatus, and is used for each application. .
  • the position of the purification material (for example, activated carbon filter 11) which consists of activated carbon in the central water purification apparatus 2 is upstream of the purification material (for example, membrane module 13) which consists of hollow fiber membranes, for example, piping from the flocculant tank 17
  • the purification material for example, membrane module 13
  • the upstream side (11 ') of the merging portion with the pipe from the hypochlorous acid tank 14 on the downstream side of the purification material (for example, the membrane module 13) made of a hollow fiber membrane may be used.
  • the position of the purification material made of activated carbon (for example, activated carbon filter 11) is located upstream of the purification material made of hollow fiber membrane (for example, membrane module 13), impurities can be removed to some extent by the purification material made of activated carbon, so that the hollow fiber membrane It is possible to increase the filtration life of the purification material (for example, the membrane module 13) made of, and to reduce the size and / or the device cost of the purification material (for example, the membrane module 13) made of the hollow fiber membrane.
  • the purification material made of activated carbon for example, activated carbon filter 11 ′
  • the purification material made of hollow fiber membrane for example, membrane module 13
  • the central water purification apparatus 2 of the present invention is provided with a backwashing apparatus that flushes and discharges impurities accumulated in the membrane module 13.
  • a backwashing apparatus that flushes and discharges impurities accumulated in the membrane module 13.
  • purified water to which chlorine has been added can be branched and stored by a three-way valve 28.
  • the water stored in the backwash tank 20 flows into the membrane module 13 from the outlet side by the backwash pump 21, and the accumulated matter is washed away while flowing back through the hollow fiber membrane 12.
  • This water is drained through a backwash drain pipe 22 connected to the membrane module 13.
  • the water that has washed the downstream side of the hollow fiber membrane 12 passes through the backwash drainage pipe 23 connected to the membrane module 13, joins the backwash drainage pipe 22, and is drained.
  • hypochlorous acid is supplied from the hypochlorous acid tank 14 by the backwash hypochlorous acid pump 24 to the purified water passing through the pipe flowing back from the backwash tank 20 to the membrane module 13.
  • Sodium is added.
  • the reducing agent is added from the reducing agent tank 25 by the reducing agent pump 26, and the concentration becomes below a predetermined concentration. So that it can be drained after being chemically treated.
  • An automatic valve 29 or a cock that opens and closes the valve with air pressure is provided at a predetermined position in the piping path so that the flow of raw water and purified water can be controlled at each stage of water purification and back washing of the membrane module. Yes.
  • the piping is branched on the downstream side of the purification material and the upstream side of the chlorine addition section, and chlorine is added to a part of the purified water that has passed through the purification material.
  • FIG. 8 shows an example of a water purification system including the chlorine water purification system 10 and the raw water system 27 or the water purification system.
  • FIG. 8 shows an example 1 of a water purification system of a building 1 for supplying water to a kitchen faucet 4, a bathroom faucet 9, a bathroom faucet 8, a shower head, a washing machine 7 in a laundry, and a toilet 6 in a toilet.
  • 9 is a table showing Example 8.
  • a water heater 5 that can heat and supply water is provided independently of other faucets and the like.
  • the kitchen since water is used for eating and drinking, the most sanitary and safe water is required.
  • Example 1 the toilet bowl 6 of the toilet is connected to the raw water system 27 or the purified water system, and other appliances are connected to the chlorinated water system 10. Moreover, in Example 5, in Example 1, the kitchen, the washroom, and the bathroom water heater 5 are connected to the raw water system 27 or the purified water system.
  • Example 2 the toilet bowl 6 and the washing machine 7 in the laundry are connected to the raw water system 27 or the water purification system, and other appliances are connected to the chlorine water purification system 10. Moreover, in Example 6, the water heater 5 of a kitchen, a washroom, and a bathroom in Example 2 is connected with the raw
  • Example 3 As shown in FIG. 6, in Example 3, the toilet 6 in the toilet, the washing machine 7 in the laundry, the bathroom faucet 8 and the shower head are connected to the raw water system 27 or the water purification system, and the kitchen faucet 4 and the bathroom faucet. 9. A water heater 5 for a kitchen, a washroom, and a bathroom is connected to the chlorine water purification system 10. In Example 7, in Example 3, the water heater 5 in the kitchen, washroom, and bathroom is connected to the raw water system 27 or the purified water system.
  • Example 4 the toilet stool 6, the washing machine 7 in the laundry, the bathroom faucet 8 and the shower head, and the bathroom faucet 9 are connected to the raw water system 27 or the water purification system, and the kitchen faucet.
  • a water heater in the kitchen, washroom, and bathroom is connected to the chlorine water purification system 10.
  • the water heater 5 in the kitchen, washroom, and bathroom in Example 4 is connected to the raw water system 27 or the water purification system, and only the kitchen faucet is connected to the chlorine water purification system 10.

Landscapes

  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Water Treatment By Sorption (AREA)
  • Domestic Plumbing Installations (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

Cette invention concerne un appareil central de purification d'eau capable d'éliminer les impuretés de l'eau du robinet et de maintenir la qualité de l'eau purifiée jusqu'au dispositif utilisant ladite eau purifiée que l'utilisateur utilise, et un système de purification d'eau l'utilisant. L'appareil central de purification d'eau (2) selon l'invention qui se trouve à l'arrivée de l'eau de robinet dans un ou plusieurs bâtiments (1) purifie l'eau de robinet introduite et la distribue aux multiples dispositifs utilisant ladite eau purifiée, en faisant passer l'eau de robinet par un matériau purifiant pour éliminer le chlore résiduaire et autres impuretés de celle-ci, et en ajoutant du chlore à l'eau purifiée. Un système de purification d'eau selon l'invention comprenant : l'appareil central de purification d'eau (2) et un second appareil de purification d'eau, qui se trouve dans un dispositif utilisant l'eau purifiée (3) et élimine le chlore de l'eau purifiée distribuée par l'appareil central de purification d'eau (2) en faisant passer l'eau par un second matériau purifiant est également décrit.
PCT/JP2012/065874 2011-09-16 2012-06-21 Appareil central de purification d'eau et système de purification d'eau WO2013038766A1 (fr)

Applications Claiming Priority (2)

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JP2011202822A JP5698630B2 (ja) 2011-09-16 2011-09-16 セントラル浄水装置
JP2011-202822 2011-09-16

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WO2013038766A1 true WO2013038766A1 (fr) 2013-03-21

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Cited By (1)

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WO2015181206A1 (fr) * 2014-05-27 2015-12-03 Biaqua B.V. Procédé d'élimination de phosphate à partir de courants d'eau par l'intermédiaire d'un procédé intégré

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JP6179747B1 (ja) * 2017-02-15 2017-08-16 竜太郎 岡 残留塩素濃度調整装置。
JP6830833B2 (ja) * 2017-03-07 2021-02-17 オルガノ株式会社 臭気物質を含む水の処理方法及び処理装置

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JPH0671249A (ja) * 1992-06-26 1994-03-15 Ebara Infilco Co Ltd 水道水の浄水装置
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Publication number Priority date Publication date Assignee Title
JPH0671249A (ja) * 1992-06-26 1994-03-15 Ebara Infilco Co Ltd 水道水の浄水装置
JP2003275752A (ja) * 2002-03-26 2003-09-30 Matsushita Electric Works Ltd 浄水器
JP2004016834A (ja) * 2002-06-12 2004-01-22 Yaskawa Electric Corp 浄水システム
JP2006015232A (ja) * 2004-06-30 2006-01-19 Max Co Ltd 滞留水の滞留検知システム

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015181206A1 (fr) * 2014-05-27 2015-12-03 Biaqua B.V. Procédé d'élimination de phosphate à partir de courants d'eau par l'intermédiaire d'un procédé intégré

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