IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0242249
(1999-09-28)
|
국제출원번호 |
PCT/US97/14239
(1997-08-12)
|
국제공개번호 |
WO98/06483
(1998-02-19)
|
발명자
/ 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
87 인용 특허 :
46 |
초록
▼
A process for treatment of water via membrane separation to remove hardness and non-hydroxide alkalinity by simultaneous removal in a weak acid cation exchange resin. The process includes ionization of sparingly ionizable components, such as silica, by adjusting the pH up to about 10.5 or higher. Th
A process for treatment of water via membrane separation to remove hardness and non-hydroxide alkalinity by simultaneous removal in a weak acid cation exchange resin. The process includes ionization of sparingly ionizable components, such as silica, by adjusting the pH up to about 10.5 or higher. Their separation by the membrane is significantly increased. The passage of boron, silica and TOC is reduced by a factor of ten or more. Recovery of 90% or higher is achievable with most brackish feedwaters, while substantial reduction in cleaning frequency is simultaneously achieved. The apparatus used for the water treatment process includes reverse osmosis membrane(s) (30), mixed bed ion exchange unit (44, 46), micron filter (48), ultraviolet sterilization unit (49), decarbonation unit (20), and electrodeionization unit (150).
대표청구항
▼
A process for treatment of water via membrane separation to remove hardness and non-hydroxide alkalinity by simultaneous removal in a weak acid cation exchange resin. The process includes ionization of sparingly ionizable components, such as silica, by adjusting the pH up to about 10.5 or higher. Th
A process for treatment of water via membrane separation to remove hardness and non-hydroxide alkalinity by simultaneous removal in a weak acid cation exchange resin. The process includes ionization of sparingly ionizable components, such as silica, by adjusting the pH up to about 10.5 or higher. Their separation by the membrane is significantly increased. The passage of boron, silica and TOC is reduced by a factor of ten or more. Recovery of 90% or higher is achievable with most brackish feedwaters, while substantial reduction in cleaning frequency is simultaneously achieved. The apparatus used for the water treatment process includes reverse osmosis membrane(s) (30), mixed bed ion exchange unit (44, 46), micron filter (48), ultraviolet sterilization unit (49), decarbonation unit (20), and electrodeionization unit (150). ed shower head to be held in a hand having an outer spray head end and a lower, extended swivel end; the lower extended swivel end being pivotably held in the outlet end of the elongated, hollow filter body; and a bracket, adapted to be secured to a shower arm, the bracket being connected to a second end of the flexible conduit and including an opening for removably supporting the combination shower head and water filter assembly therein. 2. The combination hand held shower head and water filter assembly of claim 1 wherein the combination hand held shower head and filter assembly may be alternately removably supported in the opening by the inlet end of the elongated, hollow filter body or the lower, extended swivel end of the elongated shower head. 3. A combination hand held, water filter and shower head assembly for removing chlorine from water, comprising: an elongated, hollow filter handle to be held in a hand having an elongated, internal chamber with filter media held therein; a first, larger end of said elongated hollow filter handle having a ball pivotably held therein; a second, smaller end of said elongated, hollow filter handle being secured to an elongated flexible hose secured to a holding bracket; an elongated shower head to be held in a hand having a curved portion secured to the ball by an extended swivel portion forming a lower end of the elongated shower head; an adjustable spray head held at an outer end of the elongated shower head; and a bracket adapted to be secured to a shower arm, the bracket including an opening for removably supporting the combination shower head and water filter assembly therein. 4. The combination shower head and water filter assembly of claim 3, wherein the combination shower head and filter assembly may be alternately removably supported in the opening by the second smaller end of the elongated, hollow filter body or the extended swivel portion of the elongated shower head. 5. A combination hand held water filter and shower head assembly for removing chlorine from water, comprising: an elongated, tapered, hollow filter handle to be held in a hand, having an elongated, tapered, internal chamber with filter media held therein; a first larger outlet end of said elongated, tapered, hollow filter handle having a ball pivotably held therein; a second, smaller inlet end of said elongated, tapered, hollow filter handle being secured to an elongated flexible hose secured to a holding bracket; an elongated shower head to be held in a hand having a curved portion secured to the ball by an extended swivel portion forming a lower inlet end of the elongated shower head; an adjustable spray head held at an outer end of the elongated shower head; the elongated shower head having a curved portion secured between the spray head and the lower inlet end; and a bracket, adapted to be secured to a shower arm; the bracket including an opening for alternately removably supporting the combination shower head and water filter assembly in the opening by the second, smaller inlet end of the elongated, hollow filter body or the lower inlet end of the elongated shower head.
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