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WO2007010550A1 - Procédé de purification d'eau potable par osmose inversée - Google Patents

Procédé de purification d'eau potable par osmose inversée Download PDF

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Publication number
WO2007010550A1
WO2007010550A1 PCT/IN2006/000056 IN2006000056W WO2007010550A1 WO 2007010550 A1 WO2007010550 A1 WO 2007010550A1 IN 2006000056 W IN2006000056 W IN 2006000056W WO 2007010550 A1 WO2007010550 A1 WO 2007010550A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
reverse osmosis
drinking water
purification process
purified
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.)
Ceased
Application number
PCT/IN2006/000056
Other languages
English (en)
Inventor
Mahesh Gupta
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.)
Individual
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 WO2007010550A1 publication Critical patent/WO2007010550A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
    • 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
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • 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
    • 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
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/04—Flow arrangements
    • C02F2301/043—Treatment of partial or bypass streams
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage

Definitions

  • the present invention relates to water purification process and, in particular, to home based reverses osmosis drinking water purification process, which would enable avoiding the limitation of reverse osmosis process as regards total demineralization of the purified water.
  • the reverse osmosis purification process of the invention is-, directed for improved and wide scale use/application of reverse osmosis in purification of water maintaining desired selective levels of mineral content.
  • the process of the invention is directed to serve as a simple and cost effective manner of fortifying reverse osmosis treated water with desired natural mineral content for use in providing safe and healthy drinking water.
  • reverse osmosis process for generating purified water.
  • a reverse osmosis drinking water process involves inlet and outlet pipes such that the raw water is led into the reverse osmosis treatment zone whereby the reverse osmosis divides the water into pure water and waste water. While the wastewater is 'drained out, the pure water is guided into a storage container.
  • US 5,928,503 disclose a reverse osmosis mechanism consisting of a reverse osmosis filter and a pair of active carbon filters.
  • the reverse osmosis mechanism is linked to a pump through an inlet pipe, a pure water pipe connected to a reservoir and an outlet pipe connected to the original reservoir where both pipes link the original reservoir to the pump.
  • a water level sensor in the reservoir is linked with the pump through a processor to control a water pumping operation. When the water level rises above the water level sensor, the pump is initiated and delivers water from the reservoir into the reverse osmosis mechanism. Pure water then flows into the storage tank and wastewater flows to the reservoir. When the volume of the water in the reservoir is approximately one-third of the volume of the original water maintained in the reservoir, the pump is deactivated.
  • US 6,120,688 discloses a method of purifying impure water to provide drinking water using an apparatus, the method comprising the steps of providing a micro filtration unit, a reverse osmosis unit and a CIP (clean-in-place) tank containing retentate interconnected to permit back flushing the micro filtration filter with retentate and continued or uninterrupted operation of the reverse osmosis unit by directing retentate thereto.
  • a micro filtration unit a reverse osmosis unit and a CIP (clean-in-place) tank containing retentate interconnected to permit back flushing the micro filtration filter with retentate and continued or uninterrupted operation of the reverse osmosis unit by directing retentate thereto.
  • CIP clean-in-place
  • ⁇ US 6,579,451 teaches the provision of a water desalting installation which comprises at least an auxiliary pump and another high pressure pump in parallel with an internal circulation pump, and at least one pair of feed chamber which are pressurized alternatively, each of them forming a closed circuit, preferably toroidal, so that the water circulates always in the same direction and continuously, taking advantage of its kinetic energy in the valve actuation; it may have separation means to separate the water masses of different salinity, said separation means being comprised of pistons having a spherical shape and of which the apparent density is similar to that of the water, said pistons being retained briefly during the cycle change by baskets or equivalent devices, while the water circulates to the expense of its kinetic energy, the cycle changes being controlled by approximation and housing sensors, or by flow meters or by salinity measures when such separation means are not available.
  • US 6,395,182 discloses a method for purifying water, in particular ground water, under anaerobic conditions, using a membrane filtration unit, wherein the following steps are carried out: 1) connecting the membrane filtration unit to a rinsing unit then 2) passing a rinsing agent from the rinsing unit through the membrane filtration unit so as to create anaerobic conditions in the membrane filtration unit and 3) passing the water to be purified through the membrane filtration unit , in which anaerobic conditions have thus been created in step 2), wherein the connection between the membrane filtration unit and the rinsing unit is then shut off so that the anaerobic conditions in the membrane filtration unit obtained in step 2) are maintained while the water to be purified is passed through said membrane filtration unit .
  • US 6,447,721 discloses an ultraviolet (UV) disinfection system and method for treating fluids including a configuration and design to function effectively with at least one UV light source or lamp that is not submerged in the fluid.
  • the UV light source is positioned outside the fluid to be disinfected via exposure to at least one UV dose zone outside the fluid being treated wherein UV light is projected into the at least one dose zone.
  • the UV light source may be presented in a vertical riser configuration, wherein the UV light source is positioned above the fluid to be treated and projecting a UV dose zone downward toward and into the fluid to be treated, with the fluid moving upward toward the UV light source.
  • the UV light source may be presented in a non-vertical riser configuration, wherein the UV light source is positioned above the fluid stored at least temporarily within a reservoir and projecting a UV dose zone downward toward and into the static fluid to be treated, arid is particularly effective where the fluid is pre-treated or purified drinking water.
  • Yet another object of the present invention is to provide ot reverse osmosis based drinking water, which would enable providing metered and controlled incorporation of natural mineral useful for the human body in demineralised purified drinking water generated following reverse osmosis.
  • Yet another object of the present invention is directed to a simple and cost effective manner of providing reverse osmosis based drinking water, which would enable providing metered and controlled incorporation of natural mineral useful for the human body in purified drinking water.
  • Yet another object of. the present invention is directed to ensure safety and guard against health concerns due to limitations resulting from complete demineralization of reverse osmosis treatment for purified drinking water and enable reverse osmosis method for providing drinking water with desired levels of natural mineral content.
  • Yet further object of the present invention is directed to providing for reverse osmosis based method of purification of water which would be simple and enable incorporating desired levels of essential natural mineral in drinking water thereby providing for wide scale safe and effective application and use of reverse osmosis in water purification ensuring safety and well being of individual.
  • a drinking water purification process for producing purified water with controlled natural mineral content comprising:
  • a drinking water purification process comprising:
  • the said drinking water purification process comprises:
  • a drinking water purification process comprising: 10
  • the said step of providing raw water processed and having desired mineral content comprise stages for removal and/or killing of harmful bacteria and viruses. Also, in the above process it is also possible to carry out the step of controlling the TDS level in purified water.
  • the method of reverse osmosis based purification of the invention not only provides for natural mineral content in purified water but also provides for the much required flexibility and control over the mineral content in drinking water.
  • the process provides for controlled TDS levels in purified water, which is directed to take care of the much-desired health attributes concerning constitution of purified water generated By reverse osmosis processes.
  • the above method of the invention for the first time provides for regulating the mineral content in purified water following reverse osmosis based purification.
  • the method is simple and cost effective and is directed to facilitate wide scale application and use of the reverse osmosis technique for purification of drinking water avoiding the concern of complete demineralization of water following such reverse osmosis system.
  • the present invention provides a reverse osmosis based drinking water purification process for producing purified water with controlled natural mineral content comprising:
  • step (ti) Subjecting reverse osmosis treated demineralised water to atleast a step of controlled natural mineral incorporation in a manner as herein described; (c) Optionally purifying.-rthe water obtained in step (b) above by passing through further filtration stages to obtain purified and fortified with natural mineral content water.
  • raw water is first subjected to reverse osmosis and thereafter the constitution of the processed water in terms of its salt, mineral and harmful bacteria/virus contents was determined.
  • the method of the invention is directed to a simple and cost effective manner of providing reverse osmosis based drinking water, which would enable providing metered and controlled incorporation of natural mineral useful for the human body in purified drinking water.
  • the invention is thus directed to providing for wide scale safe and effective application and use of reverse osmosis in water purification ensuring safety and well being of individual.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Toxicology (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

La présente invention concerne un procédé de purification d'eau potable par osmose inversée pour produire de l'eau purifiée avec une teneur régulée en minéraux naturels comprenant les étapes consistant à : (a) déminéraliser l'eau brute par un procédé d'osmose inversée ; (b) soumettre l'eau déminéralisée traitée par une osmose inversée à au moins une étape d'incorporation régulée de minéraux naturels d’une manière décrite dans la présente invention ; (c) purifier éventuellement l'eau obtenue dans l’étape (b) ci-dessus en la faisant passer par d'autres étapes de filtration de façon à obtenir une eau purifiée et enrichie en minéraux naturels.
PCT/IN2006/000056 2005-07-20 2006-02-22 Procédé de purification d'eau potable par osmose inversée Ceased WO2007010550A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN1888/DEL/2005 2005-07-20
IN1888DE2005 2005-07-20

Publications (1)

Publication Number Publication Date
WO2007010550A1 true WO2007010550A1 (fr) 2007-01-25

Family

ID=36354039

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2006/000056 Ceased WO2007010550A1 (fr) 2005-07-20 2006-02-22 Procédé de purification d'eau potable par osmose inversée

Country Status (1)

Country Link
WO (1) WO2007010550A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3812413A1 (de) * 1988-04-14 1989-10-26 Aquachem Ind Wasserbehandlung Verfahren zur gewinnung von wasser mit karbonathaerte aus kondensat- oder permeatwasser
EP1036768A1 (fr) * 1999-03-18 2000-09-20 Uwatech Umwelt- und Wassertechnik GmbH Procédé pour épurer désinfecter et enrichir en oxygène les eaux usées
NL1019661C2 (nl) * 2001-12-27 2003-07-01 Waters Unltd B V Werkwijze en inrichting voor het behandelen van leidingwater.
DE10208655A1 (de) * 2002-02-28 2003-09-18 Ludwig Michelbach Umkehrosmose-Anlage
US20030205514A1 (en) * 2002-05-03 2003-11-06 Potter J. Leon Water filtration system for food processing line
DE202004010727U1 (de) * 2004-07-01 2004-09-09 Hansel Garten- Und Landschaftsbau Gmbh Reinigungssystem zur Herstellung dauerhaft naturnaher Wässer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3812413A1 (de) * 1988-04-14 1989-10-26 Aquachem Ind Wasserbehandlung Verfahren zur gewinnung von wasser mit karbonathaerte aus kondensat- oder permeatwasser
EP1036768A1 (fr) * 1999-03-18 2000-09-20 Uwatech Umwelt- und Wassertechnik GmbH Procédé pour épurer désinfecter et enrichir en oxygène les eaux usées
NL1019661C2 (nl) * 2001-12-27 2003-07-01 Waters Unltd B V Werkwijze en inrichting voor het behandelen van leidingwater.
DE10208655A1 (de) * 2002-02-28 2003-09-18 Ludwig Michelbach Umkehrosmose-Anlage
US20030205514A1 (en) * 2002-05-03 2003-11-06 Potter J. Leon Water filtration system for food processing line
DE202004010727U1 (de) * 2004-07-01 2004-09-09 Hansel Garten- Und Landschaftsbau Gmbh Reinigungssystem zur Herstellung dauerhaft naturnaher Wässer

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