FR2196969A1 - Desalting of hard water by reverse osmosis - using carbon dioxide gas added through permeable membrane for acid pretreatment - Google Patents

Desalting of hard water by reverse osmosis - using carbon dioxide gas added through permeable membrane for acid pretreatment

Info

Publication number
FR2196969A1
FR2196969A1 FR7230095A FR7230095A FR2196969A1 FR 2196969 A1 FR2196969 A1 FR 2196969A1 FR 7230095 A FR7230095 A FR 7230095A FR 7230095 A FR7230095 A FR 7230095A FR 2196969 A1 FR2196969 A1 FR 2196969A1
Authority
FR
France
Prior art keywords
reverse osmosis
desalting
hard water
carbon dioxide
dioxide gas
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
FR7230095A
Other languages
English (en)
French (fr)
Other versions
FR2196969B1 (enrdf_load_stackoverflow
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.)
Rhone Poulenc SA
Original Assignee
Rhone Poulenc SA
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 Rhone Poulenc SA filed Critical Rhone Poulenc SA
Priority to FR7230095A priority Critical patent/FR2196969A1/fr
Publication of FR2196969A1 publication Critical patent/FR2196969A1/fr
Application granted granted Critical
Publication of FR2196969B1 publication Critical patent/FR2196969B1/fr
Granted 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
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • 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
    • B01D61/04—Feed pretreatment
    • 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
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/042—Prevention of deposits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2311/00—Details relating to membrane separation process operations and control
    • B01D2311/04—Specific process operations in the feed stream; Feed pretreatment
    • 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
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/08—Seawater, e.g. for desalination
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • Y02A20/131—Reverse-osmosis

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Nanotechnology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
FR7230095A 1972-08-23 1972-08-23 Desalting of hard water by reverse osmosis - using carbon dioxide gas added through permeable membrane for acid pretreatment Granted FR2196969A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7230095A FR2196969A1 (en) 1972-08-23 1972-08-23 Desalting of hard water by reverse osmosis - using carbon dioxide gas added through permeable membrane for acid pretreatment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7230095A FR2196969A1 (en) 1972-08-23 1972-08-23 Desalting of hard water by reverse osmosis - using carbon dioxide gas added through permeable membrane for acid pretreatment

Publications (2)

Publication Number Publication Date
FR2196969A1 true FR2196969A1 (en) 1974-03-22
FR2196969B1 FR2196969B1 (enrdf_load_stackoverflow) 1976-08-13

Family

ID=9103485

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7230095A Granted FR2196969A1 (en) 1972-08-23 1972-08-23 Desalting of hard water by reverse osmosis - using carbon dioxide gas added through permeable membrane for acid pretreatment

Country Status (1)

Country Link
FR (1) FR2196969A1 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2550461A1 (fr) * 1983-08-12 1985-02-15 Air Liquide Procede de traitement des sous-produits alimentaires et installation de mise en oeuvre
EP0812805A3 (en) * 1996-06-15 1998-01-28 Hans-Hermann Letzner Process and apparatus for treating cold water

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2550461A1 (fr) * 1983-08-12 1985-02-15 Air Liquide Procede de traitement des sous-produits alimentaires et installation de mise en oeuvre
EP0812805A3 (en) * 1996-06-15 1998-01-28 Hans-Hermann Letzner Process and apparatus for treating cold water

Also Published As

Publication number Publication date
FR2196969B1 (enrdf_load_stackoverflow) 1976-08-13

Similar Documents

Publication Publication Date Title
ES429815A1 (es) Procedimiento para la obtencion de estructuras laminares microporosas permeables al vapor de agua.
FR2138333B1 (enrdf_load_stackoverflow)
FR2138334B1 (enrdf_load_stackoverflow)
ES363672A1 (es) Perfeccionamientos en la construccion de intercambiadores gas-liquido.
ES417934A1 (es) Procedimiento para purificar y concentrar una solucion acuo-sa de polisacarido derivada de algas marinas.
SE7411533L (enrdf_load_stackoverflow)
ES2138597T3 (es) Procedimiento para la produccion de membranas.
NO884311L (no) Mikroporoese assymmetriske polyamidmembraner.
KR890001616A (ko) 향상된 가스분리를 위한 투과성 막
ES2110958T3 (es) Separacion de gases por medio de membranas adsorbentes.
GB1174022A (en) Thin Reinforced Permselective Films and Preparation thereof
JPS5281076A (en) Semipermeable membrane made of hollow yarn
FR2196969A1 (en) Desalting of hard water by reverse osmosis - using carbon dioxide gas added through permeable membrane for acid pretreatment
Frank Desalination of sea water
IT1066606B (it) Procedimento per la produzione di membrane per ultrafiltrazione accoppiate con enzima e membrana ottenuta
FR2425876A1 (fr) Separations de melanges liquides
FR2050700A5 (en) Reverse osmosis membrane support
JPS5592103A (en) Selective, material-permeable complex membrane and preparing the same
ES546389A0 (es) Procedimiento para el control del contenido en electrolito
JPS5260278A (en) Method of preventing contamination of membrane
FR2144102A5 (en) Microporous polyvinylidene fluoride membrane - for water purification
FR2116306A1 (en) Microporous membrane prepn - by controlled neutralisation of acidic solns of polymers
JPS5615803A (en) Treatment of diaphragm
IT1115904B (it) Fibre cave polietileniche microporose e relativo procedimento di produzione
JPS5249992A (en) Membrane-forming liquid used for the production of semipermeable membr anes for separation of a solvent

Legal Events

Date Code Title Description
ST Notification of lapse