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US 5,512,178 AGranted
Water treatment method and apparatus therefor
AssigneesYoshihisa Masuda, Shiroh Shimaya
InventorFumio Dempo
Life of this patent
Estimating the term…
Abstract
In a water treatment method and an apparatus therefor, a high purification step comprising a precision filter and an ion-exchange resin is added to a treatment system having ozone supply units, filtering units and an ultraviolet-ray irradiating unit. Treatment objective water is treated by an ozone supply unit, a filtering unit and an ultraviolet-ray irradiating unit, so as to be brought to clean water. The clean water is treated, in super pure water, by the high purification step, and an amount of dissolved oxygen is reduced. The clean water can flow out to a location on the outside of the treatment system, from a final step, as super pure water or potable water which can immediately be used.
Claims37
A water treatment method comprising the steps of:
- flowing treatment objective water through a first portion of a treatment system comprising an ozone supply unit, a filtering unit and an ultraviolet-ray irradiating unit, to purify the treatment objective water;
- flowing the treatment objective water through a second portion of the treatment system having a precision filter and an ion-exchange resin tower;
- treating said treatment objective water within said first portion of said treatment system by injecting ozone from said ozone supply unit, filtering the water with said filtering unit and irradiating the water with the ultraviolet-ray irradiating unit, to form a clean water;
- treating said clean water within said second portion of the treatment system by filtering out small impurities with said precision filter and removing ions with said ion-exchange resin tower, to form a super pure water;
- reducing an amount of dissolved oxygen in said clean water;
- and
- enabling said treatment objective water to flow out to a location on the outside of the treatment system, from a final step, as one of super pure water and potable water which can immediately be used;
- wherein said method further includes the step of flowing said treatment objective water through a third portion of the treatment system comprising a reverse osmosis membrane and an ultraviolet-ray irradiating unit provided downstream of said ozone supply unit, to treat said treatment objective water.
5 more elements
A water treatment method comprising the steps of:
- flowing treatment objective water through a first portion of a treatment system comprising an ozone supply unit, a filtering unit and an ultraviolet-ray irradiating unit, to purify the treatment objective water;
- flowing the treatment objective water through a desalination portion of the treatment system comprising a precision filter, a reverse osmosis membrane, and an ion-exchange resin all of which are located downstream of said first portion;
- treating the treatment objective water within said desalination portion to form potable water by removing impurities and salinity from the treatment objective water;
- and
- flowing said potable water out to a location on the outside of the treatment system.
2 more elements
A water treatment apparatus comprising:
- a treatment system having treatment objective water flowing therethrough, said treatment system comprising an ozone supply unit, a filtering unit and a first ultraviolet-ray irradiating unit, to purify the treatment objective water;
- said treatment system further comprising an ozone reaction tank receiving treatment objective water from said ozone supply unit;
- and
- said treatment system further comprising a high purifying portion connected to an output portion of said first ultraviolet-ray irradiating unit, said high purifying portion including a first precision filter, a reverse osmosis membrane, a second ultraviolet-ray irradiating unit, a second precision filter, and an ion-exchange resin tower, wherein said high purifying portion is located downstream of said ozone supply unit and includes means for recirculating at least a portion of said treatment objective water into said treatment system upstream of said first ultraviolet-ray irradiating unit whereby treatment objective water is recirculated through said first ultraviolet-ray irradiating unit.
1 more element
A water treatment apparatus comprising:
- a treatment system having treatment objective water flowing therethrough, said treatment system comprising an ozone supply unit, a filtering unit and a first ultraviolet-ray irradiating unit, to purify the treatment objective water;
- said treatment system further comprising an ozone reaction tank operatively connected downstream from said ozone supply unit to receive treatment objective water from said ozone supply unit;
- and
- said treatment system further comprising a high purifying portion connected to an output portion of said first ultraviolet-ray irradiating unit, said high purifying portion including a first precision filter, a reverse osmosis membrane, a second ultraviolet-ray irradiating unit, a second precision filter, and an ion-exchange resin tower, said high purifying portion including means for recirculating at least a portion of said treatment objective water into said treatment system upstream of said first ultraviolet-ray irradiating unit whereby treatment objective water is recirculated through said first ultraviolet-ray irradiating unit;
- wherein a gold collecting unit is provided between said second precision filter and said reverse osmosis membrane, said gold collecting unit having a plurality of passage bores through which seawater flows into an interior of said gold collecting unit, and a ceramic body which is capable of being heated by energization.
2 more elements
A water treatment apparatus comprising:
- a treatment system having a first purification portion, a second purification portion, and a third purification portion, said first purification portion including:
- means for supplying ozone gas of high concentration to treatment objective water,
- ozone reaction tank means operatively connected to said ozone supply means for receiving treatment objective water from said ozone-gas supply means,
- means operatively connected to said ozone reaction tank means for filtering treatment objective water received from said ozone reaction tank means to remove inorganic matters from said treatment objective water and to absorb and remove oxidizing matters and organic matters, and
- means operatively connected to said filtering means for irradiating treatment objective water from said filtering means with ultraviolet radiation to sterilize bacteria and decompose organic matters to form clean water,
- said ozone-gas supply means and said ozone reaction tank means together applying an oxidized sterilization action, a decolorization action and a deodorization action due to ozone, to the treatment objective water;
- said second purification portion including precision filter means for removing residue of the bacteria and the organic matters from said clean water, which are sterilized and decomposed by said ultraviolet-ray irradiating means, and ion-exchange resin tower means for removing ions from said clean water;
- and
- said third purification portion connected to said second purification portion downstream of said first purification portion, said third purification portion including reverse osmosis membrane means, ultraviolet-ray irradiating means and precision filter means for removing residue from the treatment objective water;
- wherein said treatment objective water passes through said ion-exchange resin tower means of said second purification portion to remove ions from said treatment objective water.
7 more elements
A water treatment apparatus comprising a treatment system having a first purification portion, a second purification portion, and a third purification portion,
- said first purification portion including:
- means for supplying ozone gas of high concentration to treatment objective water,
- ozone reaction tank means operatively connected to said ozone supply means for receiving treatment objective water from said ozone-gas supply means,
- means operatively coupled to said ozone reaction tank means for filtering the treatment objective water received from said ozone reaction tank means to remove inorganic matters from said treatment objective water and to absorb and remove oxidizing matters and organic matters, and
- means operatively coupled to said filtering means for irradiating treatment objective water from said filtering means with ultraviolet radiation to sterilize bacteria and decompose organic matters to form clean water,
- said ozone-gas supply means and said ozone reaction tank means together applying an oxidized sterilization action, a decolorization action and a deodorization action due to ozone, to the treatment objective water;
- said second purification portion including precision filter means for removing residue of the bacteria and the organic matters from said clean water, which are sterilized and decomposed by said ultraviolet-ray irradiating means, and ion-exchange resin tower means for removing ions from said clean water;
- and
- said third purification portion connected to said second purification portion downstream of said first purification portion, said third purification portion including reverse osmosis membrane means, ultraviolet-ray irradiating means and precision filter means for removing residue from the treatment objective water;
- wherein said treatment objective water passes through said ion-exchange resin tower means of said second purification portion to remove ions from said treatment objective water;
- wherein said third purification portion further includes means located between said precision filter and said reverse osmosis membrane, for collecting gold from said treatment objective water, said gold collecting means comprises a power source, a ceramic body, and means connected to said power source for enabling said ceramic body to be heated to such a temperature that a temperature difference between said ceramic body and the treatment objective water is at least equal to 7.degree. C.
8 more elements
A seawater treatment apparatus comprising:
- a first treatment portion including first means for supplying ozone to said seawater, first tank means within which said seawater reacts with said ozone supplied by said first ozone supply means, and first filtering means for filtering said seawater from said first tank means;
- a second treatment portion including second means for supplying ozone to said seawater from said filtering means of said first treatment portion, second tank means within which said seawater reacts with said ozone supplied by said second ozone supply means, and second filtering means for filtering said seawater from said second tank means;
- a third treatment portion including reverse osmosis membrane means through which said seawater from said second filtering means passes;
- and
- a fourth treatment portion including third means for supplying ozone to the seawater from said reverse osmosis membrane means of said third treatment portion, third tank means within which said seawater reacts with said ozone supplied by said third ozone supply means, third filtering means for filtering said seawater from said second tank means, and means for irradiating ultraviolet-rays to the seawater from said third filtering means.
2 more elements
A water treatment apparatus comprising:
- a treatment system comprising a first portion, a second portion, and a third portion;
- means for flowing treatment objective water through said first portion of the treatment system, said first portion comprising an ozone supply unit, a filtering unit and an ultraviolet-ray irradiating unit, to purify the treatment objective water;
- means for flowing the treatment objective water through said second portion of the treatment system, said second portion having a precision filter and an ion-exchange resin tower;
- means for treating said treatment objective water within said first portion of said treatment system by injecting ozone from said ozone supply unit, filtering the water with said filtering unit and irradiating the water with the ultraviolet-ray irradiating unit, to form a clean water;
- means for treating said clean water within said second portion of the treatment system by filtering out small impurities with said precision filter and removing ions with said ion-exchange resin tower, to form a super pure water;
- means for reducing an amount of dissolved oxygen in said clean water;
- and
- means for enabling said treatment objective water to flow out to a location on the outside of the treatment system as potable water which can immediately be used;
- wherein said apparatus further includes means for flowing said treatment objective water through said third portion of the treatment system, said third portion comprising a reverse osmosis membrane and an ultraviolet-ray irradiating unit provided downstream of said ozone supply unit, to treat said treatment objective water.
6 more elements
A water treatment apparatus comprising:
- a treatment system comprising a first portion and a desalination portion;
- means for flowing treatment objective water through said first portion of the treatment system, said first portion comprising an ozone supply unit, a filtering unit and an ultraviolet-ray irradiating unit, to purify the treatment objective water;
- means for flowing the treatment objective water through said desalination portion of the treatment system, said desalination portion comprising a precision filter, a reverse osmosis membrane, and an ion-exchange resin tower all of which are located downstream of said first portion;
- means for treating the treatment objective water within said desalination portion to form potable water by removing impurities and salinity from the treatment objective water;
- and
- means for flowing said potable water out to a location on the outside of the treatment system.
3 more elements
Dependencies are inferred from the claim text.