WO2013065358A1 - 浄水装置、および浄水システム - Google Patents

浄水装置、および浄水システム Download PDF

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Publication number
WO2013065358A1
WO2013065358A1 PCT/JP2012/067532 JP2012067532W WO2013065358A1 WO 2013065358 A1 WO2013065358 A1 WO 2013065358A1 JP 2012067532 W JP2012067532 W JP 2012067532W WO 2013065358 A1 WO2013065358 A1 WO 2013065358A1
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Prior art keywords
water
purification
purification unit
membrane
chlorine
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PCT/JP2012/067532
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English (en)
French (fr)
Japanese (ja)
Inventor
丸木　祐治
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株式会社タカギ
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Publication of WO2013065358A1 publication Critical patent/WO2013065358A1/ja

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/58—Multistep processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/149—Multistep processes comprising different kinds of membrane processes selected from ultrafiltration or microfiltration
    • 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
    • C02F9/20—Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/025—Reverse osmosis; Hyperfiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/027—Nanofiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/145—Ultrafiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/147—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
    • C02F1/28—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
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • 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
    • C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
    • 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
    • C02F1/72—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 purifier that purifies water taken from a water source or a drainage source, and relates to a water purifier that can supply water to an apartment house or a village, and a water purifying system using the water purifier.
  • the conventional water purification system is a central water purification device 20 provided near the entrance for introducing tap water or the like into the building 1, a pipe 21 attached to a house, etc., and a place where water is used. It consists of a water purifying apparatus 22 such as a faucet provided in a kitchen, bathroom, washroom, laundry, toilet, water heater, outdoor water intake, and the like.
  • the central water purification apparatus 20 is connected to a water supply pipe branched from a water main and attached to a house.
  • the central water purification apparatus 20 contains a purification material composed of activated carbon, a ceramic filter, an MF membrane, and the like. Tap water supplied from the water main is passed through the purification material to obtain residual chlorine and suspended substances. , Ions, microorganisms, chemical substances, etc. are removed to become purified water.
  • the purified water treated by the central water purification apparatus 20 passes through the pipe 21 and is supplied to each purified water use device 22 provided at the purified water use place of each household.
  • the present invention has been made to solve the above problems, has high hardness, and in a water purifier used for well water containing salt or heavy metals, the amount of water to be treated with the RO membrane is minimized, It is an object of the present invention to provide a water purifier capable of reducing the size of the apparatus and reducing the running cost, and a water purifying system using the same.
  • the first invention is a water purifier arranged at an inlet of raw water whose source is well water or the like to one or a plurality of buildings, and purifies the introduced raw water and supplies it to a plurality of water using instruments.
  • the second invention is a water purification apparatus that is disposed at an inlet of raw water whose supply source is well water or the like to one or a plurality of buildings, purifies the introduced raw water, and supplies the purified water to a plurality of water use instruments.
  • the drinking water system is branched from the domestic water system downstream of the second purification unit and connected to the downstream side via the third purification unit, the first purification unit includes mold odor, calcium, A purification material for removing at least one of impurities that clog the second purification unit and / or the third purification unit, and the second purification unit comprises a purification material for removing at least one of bacteria and protozoa.
  • the third purification unit includes the first purification unit and the second purification unit. Than purification material parts, characterized in that the salt removal rate comprises a high purification material.
  • 3rd invention provides the water receiving tank which can store water downstream from the said 2nd purification part of the said domestic water system,
  • the said drinking water system is connected to the said water receiving tank in the upstream, It is characterized by the above-mentioned. To do.
  • the fourth invention is characterized in that a chlorine addition section for adding chlorine to water is provided in the route of the domestic water system and / or the drinking water system.
  • 5th invention is a water purification system which has a water purifier of this invention, Comprising:
  • the said domestic water system is connected to the 1 or more water-purifying use equipment used for the purposes other than drinking on the downstream side,
  • the said drinking water system Is characterized in that it is connected to one or more potable water appliances for drinking water downstream.
  • the sixth invention is characterized in that the water purifying apparatus and / or the potable water using apparatus includes a chlorine removing device having a purifying material for removing chlorine from the passing water.
  • the first purification unit disposed downstream of the water intake unit and the second purification unit disposed downstream of the first purification unit are connected to the downstream side.
  • a drinking water system that branches from the domestic water system downstream of the second purification unit and is connected to the downstream side via the third purification unit.
  • the unit includes at least one of activated carbon, an ion exchange filter, a sand filter, and a nucleation unit filter
  • the second purification unit includes a UF membrane and / or an MF membrane
  • the drinking water supplied from the drinking water system is roughly filtered by the first purification unit and purified by the UF membrane and / or the MF membrane of the second purification unit before being purified by the third purification unit. Therefore, the RO membrane and / or the NF membrane can be hardly clogged, the life can be prolonged, and the waste amount of concentrated water generated by reverse osmosis in the third purification section can be reduced. A lot of potable water can be obtained.
  • the first purification unit disposed downstream of the water intake unit and the second purification unit disposed downstream of the first purification unit are connected to the downstream side.
  • a drinking water system that branches from the domestic water system downstream of the second purification unit and is connected to the downstream side via the third purification unit.
  • the part comprises a purification material that removes at least one of mold odor, calcium, impurities that clog the second purification part and / or the third purification part, and the second purification part is at least one of bacteria or protozoa
  • the third purifying part is provided with a purifying material having a higher salt removal rate than that of the first purifying part and the second purifying part, so that only water used for drinking can be obtained.
  • the drinking water supplied from the drinking water system is roughly filtered by the first purification unit and bacteria and protozoa are removed by the second purification unit before being purified by the third purification unit,
  • the purification material in the purification unit is less likely to be clogged, extending its life, and the third purification unit can reduce the amount of concentrated water generated due to reverse osmosis, allowing more drinking water Can be obtained.
  • the water receiving tank which can store water is provided in the downstream of the said 2nd purification part of the said domestic water system,
  • the said drinking water system is connected to the said water receiving tank in the upstream.
  • Water purification performance required for the first and second purification units can be supplied by purifying the water during a period of low usage and storing it in the water receiving tank. Can be reduced.
  • the water stored in the water receiving tank can be purified and supplied by the third purification section, so use of potable water use equipment is relatively small. It is not necessary to operate the first purifying unit and the second purifying unit each time, and the running cost can be saved.
  • the said water system for domestic use is connected to the 1 or more water-purifying apparatus used for purposes other than drinking water downstream, and the said drinking water system uses water for drinking 1 downstream.
  • the said water system uses water for drinking 1 downstream.
  • the water purifying device and / or the potable water using device is provided with a chlorine removing device having a purifying material for removing chlorine from the water passing therethrough, so The added chlorine can be removed immediately before use, and hygienic and safe water can be supplied to the user.
  • the water purification system is for supplying purified water to a plurality of appliances provided inside and outside of a building, a detached house, an apartment house, or the like.
  • a water purification system is provided in an apartment will be described as an example.
  • the water purification apparatus 2 is arrange
  • the installation location of the water purifier 2 is not particularly limited, such as a room in the building 1, the outdoors, and the basement.
  • the raw water supplied to the water purification apparatus is well water, pond water, lake water, seawater, river water, brackish water at the estuary, and the like.
  • the water purifier and water purification system of the present invention can be effectively purified particularly when raw water containing salt is purified, for example, well water containing salt can be used as raw water to effectively purify the raw water. Is.
  • the water purification system and the water purification apparatus 2 have two piping systems composed of a domestic water system 3 and a drinking water system 4.
  • the household water system 3 supplies water to the water purification equipment 5 such as a bathroom faucet and a washing machine faucet that is used for daily life other than drinking water, and is one or more water purification equipment that is not intended for drinking.
  • 5 is a water system for supplying water.
  • the drinking water system 4 supplies water to a drinking water use device 6 such as a kitchen faucet that is used for drinking water separated from the domestic water system, and is supplied to one or more drinking water use devices 6.
  • a water system that supplies water.
  • the domestic water system 3 of the water purifier 2 includes, in order from the water intake side (upstream side), a first purification unit 7 that performs coarse filtration of water, suspended substances (SS), bacteria, protozoa, colloidal substances, and the like. And a second purification unit 8 for removing water from the water.
  • the water purified by the first purification unit 7 and the second purification unit 8 is temporarily stored in a water receiving tank 10 provided downstream, and is supplied to the water purification equipment 5 of each household 1a through the piping of the domestic water system 3.
  • the water receiving tank 10 is also connected to a piping of a drinking water system 4 that branches from the domestic water system 3.
  • the drinking water system 4 is provided with a third purification unit 9 that removes soluble substances, viruses, salt, and other ionic substances from the water downstream of the water receiving tank 10, and is treated by the third purification unit 9.
  • Water suitable for drinking is supplied to the drinking water using device 6 of each household 1a.
  • cleaning part 7 is arrange
  • the activated carbon filter is made of granular activated carbon and / or fibrous activated carbon, and can remove residual chlorine, musty odor, SS, pigment, and organic matter from the passing water.
  • the removal of mold odor means that diosmine ((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 raw water.
  • An ion exchange filter such as an ion exchange resin filter can remove nitrate nitrogen, nitrite nitrogen, calcium and magnesium that cause hardness from passing water.
  • the sand filter is equipped with a filter having a pore size of about 10 ⁇ m, and can remove SS, sand, manganese, and pigment from the passing water.
  • the nucleation unit filter is made by adding a nucleating agent to water to agglomerate electrified metal ions, arsenic, fluorine, silica, chlorine, etc. into large particles (floc), and remove them by precipitation or filtration. be able to.
  • a nucleating agent for example, a ferric hydroxide colloid solution can be used.
  • the nucleation unit filter has a nucleating agent tank, a metering pump, and a filter. The water introduced into the nucleating unit filter is administered with the nucleating agent stored in the nucleating agent tank by the metering pump, and the floc is removed by the filter.
  • filters There are two types of filters: a cross-flow system that allows water to pass in parallel to the filter surface and a dead-end system that allows water to pass perpendicular to the filter, but a cross-flow system that does not cause clogging. This is preferable because the life of the filter becomes longer and the life of the purification material of the second purification section is prolonged.
  • the nucleation unit filter may not be provided with a filter, but flocs may be precipitated and the supernatant water may be supplied downstream, but it is desirable to provide a filter in order to reliably remove metal ions and the like. Further, the floc may be removed by the purification material of the second purification unit without providing a filter in the nucleation unit filter. However, in order to prevent clogging of the purification material in the second purification section and extend the life, it is desirable to provide a filter in the nucleation unit filter.
  • Which purifying material is used for the first purifying unit 7 may be determined according to the water quality of the water source, and a plurality of these purifying materials may be used in combination.
  • Use of an activated carbon filter is preferable because a mold odor that is difficult to remove with a UF membrane, MF membrane of the second purification unit 8 and an RO membrane of the third purification unit 9 described later can be removed.
  • it is preferable to use an ion exchange filter because it can soften water by removing calcium and magnesium that are difficult to remove with a UF membrane or an MF membrane. Calcium and magnesium can be removed from the RO membrane, but it is preferable to use an ion exchange filter for the first purification unit 7 in order to reduce the burden on the RO membrane and prolong the life.
  • a prefilter 11 including an activated carbon filter and an ion exchange filter, and a nucleation unit filter 12 are used as an example of the first purification unit 7.
  • the second purification unit 8 is provided on the downstream side of the first purification unit 7 and includes a UF membrane (ultrafiltration membrane) and / or an MF membrane (microfiltration membrane) as a purification material.
  • a UF membrane ultrafiltration membrane
  • MF membrane microfiltration membrane
  • the UF membrane and the MF membrane can be used in the form of a hollow fiber membrane.
  • cleaning part 8 water is pressurized, a purification material is allowed to pass through, bacteria and protozoa are removed, and it supplies to a water receiving tank.
  • the UF membrane has a pore size of 0.001 to 0.01 ⁇ m and removes SS, pesticides, bacteria, protozoa, polymer substances, colloidal substances, etc. that could not be removed by the first purification section from the passing water. Can do.
  • the MF membrane has a pore size of 0.01 to 10 ⁇ m, and can remove fine particles and bacteria from the passing water.
  • materials for the UF membrane and the MF membrane polyvinylidene fluoride (PVDF), cellulose acetate (CA), polyethylene (PE), polysulfone (PS), polyethersulfone (PES), ceramics, and the like can be used.
  • PVDF polyvinylidene fluoride
  • CA cellulose acetate
  • PE polyethylene
  • PS polysulfone
  • PES polyethersulfone
  • a chlorine addition unit 13 is provided between the second purification unit 8 and the water receiving tank 10.
  • the chlorine addition unit 13 includes a hypochlorous acid tank (not shown) and a metering pump (not shown), and can add sodium hypochlorite to the water purified by the second purification unit 8. .
  • a sodium hypochlorite aqueous solution is stored in the hypochlorous acid tank, and the sodium hypochlorite aqueous solution is added to water through a metering pump and piping, so that the chlorine concentration in the water becomes 0.3 to 1 mg / l. Adjust as follows. By adding sodium hypochlorite, it is ionized into hypochlorite ions in water and part of it reacts with water to form hypochlorous acid.
  • the chlorine concentration refers to the total concentration of chlorine molecules, hypochlorous acid, and hypochlorite ions in water.
  • 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 a metering pump.
  • increasing the amount of hypochlorous acid or hypochlorite ion in water is collectively referred to as adding chlorine.
  • the chlorine addition part 13 is not provided independently between the 2nd purification
  • the water from which impurities have been removed by the first purification unit 7 and the second purification unit 8 and to which chlorine has been added by the chlorine addition unit 13 is temporarily stored in the water receiving tank 10 and is connected to each household 1a by the piping of the domestic water system 3. Is supplied to the water purification appliance 5.
  • the use of water purification may be concentrated, such as using a shower in a bathroom at the same time in multiple households 1a. The ability to supply the amount of water used is required.
  • the water treatment performance per unit time of the first purification unit 7, the second purification unit 8 and the chlorine addition unit 13 is smaller than the peak usage.
  • the usage-amount at the peak time can be supplied by purifying water and storing it in the water-receiving tank 10 in the time zone with little usage-amount. Therefore, the water treatment performance required for the first purification unit 7 and the second purification unit 8 can be reduced, both the initial cost and the running cost can be reduced, and the water purification device 2 can be downsized. Can do.
  • the water stored in the water receiving tank 10 can be purified and supplied by the third purification unit 9. Therefore, it is not necessary to operate the first purification unit 7 and the second purification unit 8 each time the potable water use device 6 with a relatively small amount of water is used, and the running cost can be reduced.
  • a chlorine removal device 14 is attached to or integrated with the water purification instrument 5 of the domestic water system 3.
  • the chlorine removal device 14 includes a purification material capable of removing at least chlorine in the purified water.
  • the purification material activated carbon, RO membrane, sterilizing ceramic, ion exchange resin filter, zeolite, calcium sulfite, and the like can be used.
  • activated carbon or calcium sulfite needs to be used. Since calcium sulfite dissolves in water and removes chlorine, it is preferable to use activated carbon for the water purifying apparatus 5 used for a long time.
  • a mold odor can be further removed from water.
  • the chlorine removal device 14 in order to suppress the increase in the size of the chlorine removal device 14, increase the chlorine removal capacity per unit water volume, and suppress the decrease in the chlorine removal capacity over time of use, as the purification material, short fibrous activated carbon and particulate It is preferable to use the activated carbon together.
  • the concentration of residual chlorine contained in the water that has passed through the chlorine removing device 14 is preferably 0.2 mg / l or less, more preferably 0.1 mg / l or less, and particularly preferably 0.05 mg / l or less.
  • the chlorine concentration in water 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 chlorine removing apparatus.
  • the chlorine removing device 14 may be integrated with the faucet (water purification device 5) or externally attached as described above. However, in order to reduce the installation space, the chlorine removing device 14 may be integrated. It is preferable to use it.
  • the chlorine removal apparatus 14 since impurities have been removed in advance in the water purification apparatus 2, the chlorine removal apparatus 14 only needs to remove chlorine from the supplied water at a minimum.
  • the chlorine removal device since the purified water already purified by the water purification device 2 is supplied to the chlorine removal device 14, the chlorine removal device only needs to be able to remove chlorine at a minimum, and the purification capability required for the chlorine removal device 14 is achieved. It can be relatively small. Moreover, it is not necessary to provide a chlorine removal apparatus in all the water purification use apparatuses 5, and it is not necessary to provide a chlorine removal apparatus in some water purification use apparatuses 5.
  • FIG. Further, as in the shower head described in Japanese Patent No. 3799007, a flow for switching between a flow path for removing the chlorine by passing the purifying material and a flow path for discharging without passing through the purifying material for all the purified water supplied. A path switching valve may be provided in the water purifying apparatus 5.
  • the drinking water system 4 branches from the domestic water system 3 in the water receiving tank 10, removes salt and the like from the water in the third purification unit 9, and supplies the drinking water using device 6 of each household 1a.
  • the third purification unit 9 is provided in the drinking water system 4 and includes an RO membrane (reverse osmosis membrane) and / or an NF membrane (nanofiltration membrane) as a purification material.
  • the 3rd purification part 9 pressurizes the water of the upstream of a purification material with a pump (not shown), passes a purification material, obtains the drinking water from which salt content was removed, and supplies it to the downstream drinking water use instrument 6 To do.
  • the RO membrane can remove soluble substances, viruses, salt and other ionic substances from the water passing therethrough.
  • synthetic resins such as cellulose acetate, cellulose-based polymer, polyamide-based, and vinyl polymer can be used, but polyamide-based nylon is preferably used from the viewpoint of durability.
  • the NF membrane is a reverse osmosis membrane having a pore diameter of about 1 to 2 nm, and can remove calcium, magnesium, humic substances, trihalomethane, heavy metal ions, and the like that cause hardness from the passing water.
  • the salt removal rate in the NF membrane is generally about 60%.
  • polyamide-based, polypiperazine amide-based, polyester amide-based, water-soluble vinyl polymer and the like can be used as the material of the NF film.
  • the RO membrane and NF membrane have a smaller pore size, and the removal rate of trihalomethane such as chloroform and bromoform generated by combining ionic substances such as salt and chlorine with organic substances in water is high. It is desirable to use an RO membrane in order to improve safety.
  • the RO membrane has a small pore diameter, and the required pressure for passing water is higher than that of the NF membrane, so that the required performance and power consumption of the pump are increased. Therefore, it is preferable to use an NF film in order to reduce running costs.
  • an RO membrane is used to increase the safety of drinking water.
  • a drain pipe 15 for connecting and draining concentrated water is connected, and a dilution water pipe 16 that joins the drain pipe 15 from the water receiving tank 10 is provided.
  • the concentrated water can be diluted and discarded with water supplied from the water receiving tank 10.
  • the drain pipe 15 and the dilution water pipe 16 are provided with an opening / closing valve (not shown) or the like so that the opening / closing can be controlled.
  • the water supplied to the third purification unit 9 is the UF membrane of the second purification unit 8. Since impurities are removed in advance, about 90% of the water supplied to the third purification unit 9 can be filtered to make drinking water, and the amount of concentrated water can be suppressed to about 10%. .
  • cleaning part 8 is not provided in the upstream of the RO membrane, only about 50% of the water supplied to the 3rd purification
  • a chlorine addition unit 17 is provided downstream of the third purification unit 9.
  • the chlorine addition unit 17 is the same as the chlorine addition unit 13 provided upstream of the water receiving tank 10, and includes a hypochlorous acid tank and a metering pump.
  • the chlorine addition unit 17 supplies hypochlorite to drinking water purified by the third purification unit 9.
  • Sodium chlorate can be added. In this chlorine addition part 17, it adjusts so that the chlorine concentration in water may be 0.3-1 mg / l.
  • the chlorine removing device 18 is also attached to or provided integrally with the potable water use device 6 of the potable water system 4.
  • the chlorine removing device 18 can be the same as the chlorine removing device 14 provided in the water purifying apparatus 5 and includes a purification material capable of removing at least chlorine in drinking water, and chlorine from drinking water. Can be removed and supplied.
  • the water that has been roughly filtered by the first purification unit 7 and from which bacteria and protozoa have been removed by the second purification unit 8 is supplied to the third purification unit 9.
  • the water purified by the first purification unit 7 and the second purification unit 8 is supplied to the third purification unit 9
  • the RO membrane and / or NF membrane can be made less clogged and the life can be prolonged.
  • the life is supplied to the water purification equipment 5 of each household 1 a without going through the third purification unit 9.
  • the third purification unit 9 processes only water used for drinking, and therefore the amount of RO membranes and / or NF membranes that are expensive and high in running costs can be reduced.
  • the life of the RO membrane and / or the NF membrane can be prolonged, and the device of the third purification unit 9 can be miniaturized.
  • water used for purposes other than drinking is also used in a bathroom or a washing machine because heavy metals are removed by the first purification unit 7 and the second purification unit 8 to be softened and supplied to the water purification device 5.
  • the provision of the chlorine addition sections 13 and 17 for adding chlorine to the water allows the domestic water to be used due to the sterilizing power of hypochlorous acid and hypochlorite ions.
  • Bacteria can be prevented from breeding in the pipes of the system 3 and / or the drinking water system 4, and sanitary water can be used in the water purification device 5 and / or the drinking water device 6.
  • chlorine addition part 13 and the chlorine addition part 17 chlorine is added only by at least one of both chlorine addition parts, or chlorine is added by both, and water for domestic use
  • the amount of chlorine added to the system 3 and the drinking water system 4 is different between the two systems, or chlorine is added only to the drinking water system 4 to reduce the total amount of added chlorine, and the water purifier of the present invention and It is possible to reduce the running cost for use in the water purification system.
  • the cost of the water purifier of this invention and a water purifier system can be reduced, or use of the water purifier of this invention and a water purifier system It is possible to reduce the running cost.
  • the chlorine removing devices 14 and 18 equipped with the purifying material for removing chlorine from the water was added to the water by the chlorine adding units 13 and 17. Chlorine is removed by the chlorine removing devices 14 and 18, and hygienic and safe water can be used.
  • chlorine removing device 18 equipped with a purifying material for removing chlorine from water only in the drinking water using device 6 chlorine is removed by the drinking water using device 6 provided in the drinking water system 4 where chlorine removal is particularly desired. It can be removed and the cost of the water purification system of the present invention can be reduced.
  • FIG. 1 also when providing the chlorine removal apparatus 18 equipped with the purification material which removes chlorine from water in the purified water use apparatus 5, it adapts to the use condition, such as a user's use frequency, and the purpose of use of water, and some purified water You may provide the chlorine removal apparatus 18 equipped with the purification material which removes chlorine from water only in the use instrument 5.
  • the water purification system of the present invention is applied to apartment buildings such as condominiums, apartments, and buildings, intakes that collect well water into a plurality of detached houses, and one or more detached buildings and / or one or more assembled buildings. Can do.
  • the detached house includes not only a residential detached house but also an office detached house.
  • the chlorine addition parts 13 and 17 and the chlorine removal apparatuses 14 and 18 were provided in both the domestic water system 3 and the drinking water system 4, in order to reduce initial cost and running cost,
  • the domestic water system 3 may not be provided with the chlorine addition section and the chlorine removal section, and the chlorine addition section 17 and the chlorine removal device 18 may be provided only in the drinking water system 4 that uses water for drinking.
  • the chlorine addition units 13 and 17 use a switchable state between the state in which the sodium hypochlorite solution is added and the state in which the sodium hypochlorite solution is not added, and further, the supply amount of the sodium hypochlorite solution is controlled. It is more preferable to use one that can adjust the chlorine concentration of water.

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  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Water Treatment By Sorption (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Filtration Of Liquid (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Treatment Of Water By Ion Exchange (AREA)
PCT/JP2012/067532 2011-11-04 2012-07-10 浄水装置、および浄水システム WO2013065358A1 (ja)

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CN104291462A (zh) * 2014-09-22 2015-01-21 珠海格力电器股份有限公司 净水系统
CN104386843A (zh) * 2014-11-10 2015-03-04 江苏创兰太阳能空调有限公司 一种净水机
CN104445687A (zh) * 2014-11-25 2015-03-25 成都威尔诺生物科技有限公司 一种用于处理生物废水的循环结构
CN105254043A (zh) * 2015-07-18 2016-01-20 福建金源泉科技发展有限公司 一种台面分置分质净水机及使用方法
CN105858996A (zh) * 2016-04-30 2016-08-17 山东大禹水处理有限公司 一种高回收率的中央水处理机
CN107572676A (zh) * 2016-07-04 2018-01-12 杭州金鱼电器集团有限公司 Ro膜分级分质供水净水器
CN110563212A (zh) * 2019-10-22 2019-12-13 清华大学 制盐蒸馏水制备的饮用富锶矿泉水及其方法和系统
CN110937709A (zh) * 2019-12-24 2020-03-31 上海茗洋净水设备有限公司 一种用于企业餐饮厨房全套净化供水系统
EP4219413A1 (en) * 2022-01-26 2023-08-02 LG Electronics Inc. Water purifier
EP4335826A1 (en) * 2022-09-07 2024-03-13 Seccua, GmbH Filter set

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CN103641264B (zh) * 2013-12-30 2015-08-05 南京大学 纳滤/反渗透技术处理二级出水的预处理方法
CN103663798B (zh) * 2013-12-30 2015-04-22 南京大学 印染废水二级处理出水的梯级处理与回用方法
JP6775985B2 (ja) * 2016-03-31 2020-10-28 株式会社川本製作所 除鉄除マンガン装置及び濾過装置
KR102591751B1 (ko) * 2022-11-11 2023-10-19 제레스팜 주식회사 모듈형 수경재배장치

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CN104291462A (zh) * 2014-09-22 2015-01-21 珠海格力电器股份有限公司 净水系统
CN104386843A (zh) * 2014-11-10 2015-03-04 江苏创兰太阳能空调有限公司 一种净水机
CN104445687A (zh) * 2014-11-25 2015-03-25 成都威尔诺生物科技有限公司 一种用于处理生物废水的循环结构
CN105254043A (zh) * 2015-07-18 2016-01-20 福建金源泉科技发展有限公司 一种台面分置分质净水机及使用方法
CN105858996A (zh) * 2016-04-30 2016-08-17 山东大禹水处理有限公司 一种高回收率的中央水处理机
CN107572676A (zh) * 2016-07-04 2018-01-12 杭州金鱼电器集团有限公司 Ro膜分级分质供水净水器
CN110563212A (zh) * 2019-10-22 2019-12-13 清华大学 制盐蒸馏水制备的饮用富锶矿泉水及其方法和系统
CN110937709A (zh) * 2019-12-24 2020-03-31 上海茗洋净水设备有限公司 一种用于企业餐饮厨房全套净化供水系统
CN110937709B (zh) * 2019-12-24 2022-03-29 上海茗洋净水设备有限公司 一种用于企业餐饮厨房全套净化供水系统
EP4219413A1 (en) * 2022-01-26 2023-08-02 LG Electronics Inc. Water purifier
EP4335826A1 (en) * 2022-09-07 2024-03-13 Seccua, GmbH Filter set

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