CA2400949A1 - Fluid treatment system - Google Patents

Fluid treatment system Download PDF

Info

Publication number
CA2400949A1
CA2400949A1 CA002400949A CA2400949A CA2400949A1 CA 2400949 A1 CA2400949 A1 CA 2400949A1 CA 002400949 A CA002400949 A CA 002400949A CA 2400949 A CA2400949 A CA 2400949A CA 2400949 A1 CA2400949 A1 CA 2400949A1
Authority
CA
Canada
Prior art keywords
region
bladder
dispensing
communicates
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002400949A
Other languages
French (fr)
Other versions
CA2400949C (en
Inventor
Peter Halemba
George Ellis Iii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kinetico Inc
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2400949A1 publication Critical patent/CA2400949A1/en
Application granted granted Critical
Publication of CA2400949C publication Critical patent/CA2400949C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B01D61/08—Apparatus therefor
    • 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
    • B01D61/10—Accessories; Auxiliary operations
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Nanotechnology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

A water treatment system having a reverse osmosis unit (14) includes a storage tank (40) having an outer tank housing (42) that encloses an expandable bladder (50). A pressurized region (62) is defined between the outside of the bladder (50) and inside of the housing (42). A control valve assembly (44) controls communication of source water under pressure to pressurizing region (62) and communicates the region (62) with a drain (22). The assembly (44) includes a pilot valve (70) that is responsive to a state of dispensing and includes a valve element (76) that moves between a first dispensing position and a second non-dispensing position. A servo valve (72) is responsive to position of the pilot valve (70) and communicates source water under pressure to the region (62) when the pilot valve (70) is in the first position thus applying pressure to bladder (50) to expel treated water and communicates region (62) to the drain (22) when dispensing is not occurring so as to allow bladder (50) to expand as it receives treated water from the reverse osmosis unit (14).
CA002400949A 2000-03-15 2000-03-15 Fluid treatment system Expired - Lifetime CA2400949C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2000/006848 WO2001068227A1 (en) 2000-03-15 2000-03-15 Fluid treatment system

Publications (2)

Publication Number Publication Date
CA2400949A1 true CA2400949A1 (en) 2001-09-20
CA2400949C CA2400949C (en) 2008-07-22

Family

ID=21741154

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002400949A Expired - Lifetime CA2400949C (en) 2000-03-15 2000-03-15 Fluid treatment system

Country Status (2)

Country Link
CA (1) CA2400949C (en)
WO (1) WO2001068227A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2421270C1 (en) * 2009-10-05 2011-06-20 Общество с ограниченной ответственностью "Аквафор" Filtered water unit for water treatment system, water treatment system storage unit (versions), and water treatment system (versions)
CN107990023B (en) 2016-10-26 2019-11-26 3M创新有限公司 Reversal valve and household water filter including the reversal valve

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4776952A (en) * 1984-07-23 1988-10-11 Burrows Bruce D Regulated control valve assembly for a water purification system
US4705625A (en) * 1985-10-31 1987-11-10 Hart Jr John E Reverse osmosis water purifying system
US4997553A (en) * 1990-03-15 1991-03-05 Clack Corporation Storage and dispensing apparatus for reverse osmosis filtration purification system
US5662793A (en) * 1996-01-05 1997-09-02 Beall, Jr.; Richard W. Valve assembly of a reverse osmosis water purification system

Also Published As

Publication number Publication date
CA2400949C (en) 2008-07-22
WO2001068227A1 (en) 2001-09-20

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20200315