CA2454425A1 - Apparatus and method for softening water by nanofiltration - Google Patents

Apparatus and method for softening water by nanofiltration Download PDF

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Publication number
CA2454425A1
CA2454425A1 CA002454425A CA2454425A CA2454425A1 CA 2454425 A1 CA2454425 A1 CA 2454425A1 CA 002454425 A CA002454425 A CA 002454425A CA 2454425 A CA2454425 A CA 2454425A CA 2454425 A1 CA2454425 A1 CA 2454425A1
Authority
CA
Canada
Prior art keywords
water
softening
nanofiltration
flow
softening water
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.)
Abandoned
Application number
CA002454425A
Other languages
English (en)
French (fr)
Inventor
Robert Sung Lee
Harapanahalli S. Muralidhara
Martin N. Aschauer
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.)
Cargill 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 CA2454425A1 publication Critical patent/CA2454425A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2315/00—Details relating to the membrane module operation
    • B01D2315/08—Fully permeating type; Dead-end filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/16—Membrane materials having positively charged functional groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/20—Specific permeability or cut-off range
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y40/00—Manufacture or treatment of nanostructures
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Nanotechnology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Treatment Of Water By Ion Exchange (AREA)
CA002454425A 2001-07-20 2002-07-19 Apparatus and method for softening water by nanofiltration Abandoned CA2454425A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/909,488 2001-07-20
US09/909,488 US20030015470A1 (en) 2001-07-20 2001-07-20 Nanofiltration water-softening apparatus and method
PCT/US2002/023157 WO2003008337A2 (en) 2001-07-20 2002-07-19 Apparatus and method for softening water by nanofiltration

Publications (1)

Publication Number Publication Date
CA2454425A1 true CA2454425A1 (en) 2003-01-30

Family

ID=25427311

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002454425A Abandoned CA2454425A1 (en) 2001-07-20 2002-07-19 Apparatus and method for softening water by nanofiltration

Country Status (9)

Country Link
US (2) US20030015470A1 (enExample)
EP (1) EP1412292A2 (enExample)
JP (2) JP2004535295A (enExample)
KR (1) KR20040040434A (enExample)
CN (1) CN1547556A (enExample)
CA (1) CA2454425A1 (enExample)
EA (1) EA200400202A1 (enExample)
MX (1) MXPA04000628A (enExample)
WO (1) WO2003008337A2 (enExample)

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US20040222158A1 (en) * 2003-03-14 2004-11-11 Hidayat Husain Nanofiltration system for water softening with internally staged spiral wound modules
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US7132052B2 (en) * 2003-12-11 2006-11-07 General Electric Company System for the purification and reuse of spent brine in a water softener
US20060096920A1 (en) * 2004-11-05 2006-05-11 General Electric Company System and method for conditioning water
US20070138096A1 (en) * 2004-11-05 2007-06-21 Tarr Ronald S Systems and methods for controlling contaminate levels of processed water and maintaining membranes
RU2008104828A (ru) * 2005-07-12 2009-08-20 Каргилл, Инкорпорейтед (US) Способ умягчения воды (варианты)
US20070119782A1 (en) * 2005-11-30 2007-05-31 Rawson James Rulon Y Method and system for controlling corrosivity of purified water
US20080149562A1 (en) * 2006-12-20 2008-06-26 Ronald Scott Tarr Methods and systems for delivering scale inhibitor
EP2272410A1 (en) * 2009-07-08 2011-01-12 Giovanna Delsante Coffee Machine With Integrated Water Purification System
KR101346319B1 (ko) * 2012-09-17 2013-12-31 한국수자원공사 연수 및 정수 통합시스템
US11072551B2 (en) 2016-12-12 2021-07-27 A. O. Smith Corporation Water filtration system with recirculation to reduce total dissolved solids creep effect
CN113811513B (zh) * 2019-05-16 2023-10-20 A.O.史密斯公司 在线水硬度传感器和软水器控制系统
KR20220106460A (ko) 2021-01-22 2022-07-29 (주)신산 중공사형 나노 복합막을 이용한 수처리장치
US12515214B2 (en) 2021-06-28 2026-01-06 A. O. Smith Corporation Water softener system and method of operating the same
CN114735887B (zh) * 2022-03-20 2023-08-22 杭州美易环境科技有限公司 一种工业废水浓缩液中有机物与盐的处理方法

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Also Published As

Publication number Publication date
MXPA04000628A (es) 2004-09-13
JP2004535295A (ja) 2004-11-25
EA200400202A1 (ru) 2004-08-26
JP2009106938A (ja) 2009-05-21
CN1547556A (zh) 2004-11-17
US20090008332A1 (en) 2009-01-08
KR20040040434A (ko) 2004-05-12
EP1412292A2 (en) 2004-04-28
WO2003008337A2 (en) 2003-01-30
US20030015470A1 (en) 2003-01-23
WO2003008337A3 (en) 2003-04-24

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Legal Events

Date Code Title Description
EEER Examination request
FZDE Discontinued