[go: up one dir, main page]

WO2012112045A2 - Method for cleaning water, as well as water cleaning device - Google Patents

Method for cleaning water, as well as water cleaning device Download PDF

Info

Publication number
WO2012112045A2
WO2012112045A2 PCT/NL2012/050087 NL2012050087W WO2012112045A2 WO 2012112045 A2 WO2012112045 A2 WO 2012112045A2 NL 2012050087 W NL2012050087 W NL 2012050087W WO 2012112045 A2 WO2012112045 A2 WO 2012112045A2
Authority
WO
WIPO (PCT)
Prior art keywords
water
treatment
micro
aeration
mineralization
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/NL2012/050087
Other languages
French (fr)
Other versions
WO2012112045A3 (en
Inventor
Antonius Doretheus KOENS
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.)
MULTI PURPOSE INDUSTRIES
Original Assignee
MULTI PURPOSE INDUSTRIES
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 MULTI PURPOSE INDUSTRIES filed Critical MULTI PURPOSE INDUSTRIES
Publication of WO2012112045A2 publication Critical patent/WO2012112045A2/en
Publication of WO2012112045A3 publication Critical patent/WO2012112045A3/en
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
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • 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
    • C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
    • 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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • 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
    • 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

Definitions

  • the invention relates to a water purification method, as well as a water purification plant in which this method is implemented.
  • the method according to the invention is a purely mechanical process because of which no chemicals or electricity is needed. This is particularly of advantage when the method is implemented at locations where no or insufficient electricity is available and/or no or insufficient chemicals are available.
  • An advantageous embodiment of the method according to the invention is characterized in that, prior to the processes described above, first the water to be treated undergoes an adapted pre-treatment in which the primary constituent of pollution is removed from the water by means of one or more of the following processes: prefiltering, membrane filtering, micro-filtering, chemical flocculation, treatment with an eddy current separator.
  • Mineralization of drinking water is preferably effected by means of calcium carbonate injection or by passing the water through a marble filter.
  • the invention likewise relates to a water purification plant.
  • the invention is characterized in that it comprises the following series-connected devices:
  • an activated carbon treatment device and a reverse osmosis device where the latter two devices may also be incorporated in the plant in a different order
  • An embodiment of the water purification plant according to the invention is characterized in that the water purification plant comprises a pre-treatment system in which the primary constituent of pollution is removed from the water, which pre- treatment system comprises one or more of the following devices: prefiltering device, membrane filtering device, micro-filtering device, chemical flocculation device, eddy current separator.
  • the mineralization device preferably comprises calcium carbonate injection means or a marble filter.
  • Fig. 1 gives a diagrammatic representation of an embodiment of the method according to the invention.
  • Fig. 1 gives a diagrammatic representation of an embodiment of the method according to the invention.
  • the polluted water Prior to the start of the intensive purification, the polluted water is first subjected to a pre-treatment 1, in which the primary constituent of the pollution is removed from the water.
  • This pre-treatment is embodied by one or more of the following processes: prefiltering, membrane filtering, microfiltering, chemical flocculation, and eddy current separator treatment.
  • ultrafiltering 3 utilizing filters that have a pore size of approximately 250 nm, by which all visible impurities such as, for example, viruses, bacteria, worms, sand and floating particles are filtered from the water,
  • UV light treatment 5 by which biological impurities are removed from the water, micro- aeration 7 in a vessel, in which by means of oxidation for example scent, colour, taste and metals are removed from the polluted water,
  • Microfiltering, ultrafiltering and nanofiltering that is, reverse osmosis, are comparable methods, they only differ in sizes of the filter openings.
  • the molecules that are stopped by means of ultrafiltering are smaller than they are in the case of microfiltering. So both ultrafiltering and microfiltering are used for removing macromolecules from a solution. Molecules having a weight of less than 1000 g/mol and ions are hardly stopped by ultrafiltering. When nanofiltering is applied even smaller molecules of up to 200 g/mol can be stopped, as well as polyvalent ions.
  • Reverse osmosis is a process based on diffusion in which a difference in pressure is realised over a semi-permeable membrane, as a result of which this membrane starts working as a filter: the solvent will start to move to the side where the sum of the external pressure and the osmotic pressure is lowest.
  • the pure solvent without carrying along the dissolved materials
  • water is pushed very hard through a sieve that has microscopically small openings.
  • UV light breaks off organic refuse matter and renders organic micro pollutions harmless. No harmful residual material is left in the water then.
  • Activated carbon is a specially treated carbon that has the feature of being able to bind all sorts of materials to it.
  • Activated carbon is a strong adsorption agent.
  • the effect of activated carbon is based on a very large surface by a fine micro structure with a large number of very fine pores.
  • Commercially available types of activated carbon have an internal surface from 500 to 2000 m 2 /g.
  • the activated carbon particles (carbon atoms) exert attraction on gaseous or fluid particles (molecules) that surround or flow through the activated carbon.
  • the degree of attractive power is determined by a plurality of factors, for example, by the shape and size (weight) of the molecules that come into contact with the activated carbon. Just because not all molecules are equally strongly attracted and retained (adsorbed) by activated carbon, it is posisble to remove one or more undesired materials from the water.

Landscapes

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

Abstract

Water purification method, as well as water purification plant In a method by which substantially any form of polluted water can be purified and made into drinking water, the water to be purified is successively subjected to the following processes: ultrafiltering, UV light treatment, - micro-aeration, treatment with activated carbon and reverse osmosis, where the order of the latter two steps is interchangeable, extended UV light treatment, mineralization, and - extended micro-aeration. It has turned out that subjecting water twice to an ultra-violet light treatment leads to a very high degree of water purification. After water has been subjected to the first six of the above processes, it has become too pure to drink. As a result, mineralization of the water is needed to make it drinkable. For neutralizing the smell, colour and taste the water may have obtained after mineralization, the water is then subjected once more to a micro-aeration process.

Description

Water purification method, as well as water purification plant
DESCRIPTION
Field of the invention
The invention relates to a water purification method, as well as a water purification plant in which this method is implemented.
State of the art
Many processes for purifying water are known such as, for example, micro, ultra and nanofiltering, reverse osmosis, ultra-violet water treatment, micro- aeration, and activated carbon treatment of water. It is also known to apply one or more of these processes after one another for purifying water.
Summary of the invention It is an object of the invention to provide a water purification method by which substantially any form of polluted water can be purified to become drinking water. For this purpose the method according to the invention is characterized in that the water to be purified is successively subjected to the following processes:
ultrafiltering,
- UV light treatment,
micro-aeration,
treatment with activated carbon and reverse osmosis, where the order of the latter two steps is interchangeable,
extended UV light treatment,
- mineralization, and
extended micro-aeration.
It has turned out that subjecting water twice to an ultra-violet light treatment (once at the beginning and once at the end) leads to a very high degree of water purification. After water has been subjected to the first six of the above processes, it has become too pure to drink. As a result, mineralization of the water is needed to make it drinkable. For neutralizing the smell, colour and taste the water may have obtained after mineralization, the water is then subjected once more to a micro-aeration process.
The method according to the invention is a purely mechanical process because of which no chemicals or electricity is needed. This is particularly of advantage when the method is implemented at locations where no or insufficient electricity is available and/or no or insufficient chemicals are available.
An advantageous embodiment of the method according to the invention is characterized in that, prior to the processes described above, first the water to be treated undergoes an adapted pre-treatment in which the primary constituent of pollution is removed from the water by means of one or more of the following processes: prefiltering, membrane filtering, micro-filtering, chemical flocculation, treatment with an eddy current separator.
Mineralization of drinking water is preferably effected by means of calcium carbonate injection or by passing the water through a marble filter.
The invention likewise relates to a water purification plant. With respect to the water purification plant the invention is characterized in that it comprises the following series-connected devices:
- an ultrafiltering device,
an ultraviolet light treatment device,
a micro-aeration device,
an activated carbon treatment device and a reverse osmosis device, where the latter two devices may also be incorporated in the plant in a different order,
- an extended UV light treatment device,
a mineralization device, and
an extended micro-aeration device.
An embodiment of the water purification plant according to the invention is characterized in that the water purification plant comprises a pre-treatment system in which the primary constituent of pollution is removed from the water, which pre- treatment system comprises one or more of the following devices: prefiltering device, membrane filtering device, micro-filtering device, chemical flocculation device, eddy current separator. The mineralization device preferably comprises calcium carbonate injection means or a marble filter.
Brief description of the drawing figure
The invention will be further described below in more detail with reference to a diagrammatic representation of an example of embodiment of the water purification method according to the invention given in the drawing figure, in which
Fig. 1 gives a diagrammatic representation of an embodiment of the method according to the invention.
Detailed description of the drawing figure
Fig. 1 gives a diagrammatic representation of an embodiment of the method according to the invention. Prior to the start of the intensive purification, the polluted water is first subjected to a pre-treatment 1, in which the primary constituent of the pollution is removed from the water. This pre-treatment is embodied by one or more of the following processes: prefiltering, membrane filtering, microfiltering, chemical flocculation, and eddy current separator treatment.
There is often a known main pollution source of water, for example in the case of an oil disaster this is oil pollution and prefiltering with a ceramic membrane and chemical flocculation is the proper method for removing the oil or substantially all oil from the water. If the water to be purified has a high sugar concentration (for example in the case where the water to be purified is returned soft drink), then the proper pre-treatment is an eddy current separator treatment. If the water to be purified contains organic pollution (for example manure), then microfiltering is the proper pre- treatment. In the case of water polluted by minerals (for example water coming from a mine) heavy aeration and UV light treatment are the proper pre-treatments.
Then begins the intensive purification of the polluted water by successively subjecting the water to the following processes:
ultrafiltering 3, utilizing filters that have a pore size of approximately 250 nm, by which all visible impurities such as, for example, viruses, bacteria, worms, sand and floating particles are filtered from the water,
UV light treatment 5, by which biological impurities are removed from the water, micro- aeration 7 in a vessel, in which by means of oxidation for example scent, colour, taste and metals are removed from the polluted water,
activated carbon treatment 9,
reverse osmosis 11, by which all or substantially all dissolved materials can be removed from the polluted water for which filters are used having an approximately
15 to 25 nm pore size,
once again an ultra-violet light treatment 13,
mineralisation 15 by means of a calcium carbonate injection or by passing the water through a marble filter, and
- once again a micro aeration 17 in a vessel.
Microfiltering, ultrafiltering and nanofiltering, that is, reverse osmosis, are comparable methods, they only differ in sizes of the filter openings. The molecules that are stopped by means of ultrafiltering are smaller than they are in the case of microfiltering. So both ultrafiltering and microfiltering are used for removing macromolecules from a solution. Molecules having a weight of less than 1000 g/mol and ions are hardly stopped by ultrafiltering. When nanofiltering is applied even smaller molecules of up to 200 g/mol can be stopped, as well as polyvalent ions.
Reverse osmosis is a process based on diffusion in which a difference in pressure is realised over a semi-permeable membrane, as a result of which this membrane starts working as a filter: the solvent will start to move to the side where the sum of the external pressure and the osmotic pressure is lowest. When the external pressure on the side of the concentrated solvent is high enough, the pure solvent (without carrying along the dissolved materials) will be pressed to the other side. Worded differently: water is pushed very hard through a sieve that has microscopically small openings.
Combined with peroxide, UV light breaks off organic refuse matter and renders organic micro pollutions harmless. No harmful residual material is left in the water then.
Activated carbon is a specially treated carbon that has the feature of being able to bind all sorts of materials to it. Activated carbon is a strong adsorption agent. The effect of activated carbon is based on a very large surface by a fine micro structure with a large number of very fine pores. Commercially available types of activated carbon have an internal surface from 500 to 2000 m2/g. The activated carbon particles (carbon atoms) exert attraction on gaseous or fluid particles (molecules) that surround or flow through the activated carbon.
The degree of attractive power is determined by a plurality of factors, for example, by the shape and size (weight) of the molecules that come into contact with the activated carbon. Just because not all molecules are equally strongly attracted and retained (adsorbed) by activated carbon, it is posisble to remove one or more undesired materials from the water.
Albeit the invention has been described in the foregoing with reference to the drawing figure, it should be observed that the invention is not by any manner or means restricted to the embodiment shown in the drawing figure. The invention also extends to all embodiments deviating from the embodiment shown in the drawing figure within the spirit and scope defined by the claims.

Claims

CLAIMS:
1. A water purification method, characterized in that the water to be purified is successively subjected to the following processes:
ultrafiltering,
- UV light treatment,
micro-aeration,
treatment with activated carbon and reverse osmosis, where the order of the latter two steps is interchangeable,
extended UV light treatment,
- mineralization, and
extended micro-aeration.
2. A method as claimed in claim 1, characterized in that, prior to the processes described in claim 1, first the water to be treated undergoes an adapted pre- treatment in which the primary constituent of pollution is removed from the water by means of one or more of the following processes: prefiltering, membrane filtering, micro-filtering, chemical flocculation, treatment with an eddy current separator.
3. A method as claimed in claim 1 or 2, characterized in that mineralization of drinking water is effected by means of calcium carbonate injection or by passing the water through a marble filter.
4. A method as claimed in claim 1, 2 or 3, characterized in that it comprises the following series-connected devices:
- an ultrafiltering device,
an ultraviolet light treatment device,
a micro-aeration device,
an activated carbon treatment device and a reverse osmosis device, where the latter two devices may also be incorporated in the plant in a different order,
- an extended UV light treatment device,
a mineralization device, and
an extended micro-aeration device.
5. A water purification plant as claimed in claim 4, characterized in that the water purification plant comprises a pre-treatment system in which the primary constituent of the pollution is removed from the water, which pre-treatment system comprises one or more of the following devices: prefiltering device, membrane filtering device, micro-filtering device, chemical flocculation device, eddy current separator device.
6. A water purification plant as claimed in claim 4 or 5, characterized in that the mineralization device comprises calcium carbonate injection means or a marble filter.
PCT/NL2012/050087 2011-02-17 2012-02-17 Method for cleaning water, as well as water cleaning device Ceased WO2012112045A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2006241A NL2006241C2 (en) 2011-02-17 2011-02-17 METHOD FOR PURIFYING WATER AND WATER PURIFICATION PLANT
NL2006241 2011-02-17

Publications (2)

Publication Number Publication Date
WO2012112045A2 true WO2012112045A2 (en) 2012-08-23
WO2012112045A3 WO2012112045A3 (en) 2012-11-15

Family

ID=46124691

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2012/050087 Ceased WO2012112045A2 (en) 2011-02-17 2012-02-17 Method for cleaning water, as well as water cleaning device

Country Status (2)

Country Link
NL (1) NL2006241C2 (en)
WO (1) WO2012112045A2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11103830B2 (en) 2015-09-02 2021-08-31 Electrophor, Inc. Method for purifying a liquid
US11439955B2 (en) 2015-09-02 2022-09-13 Electrophor, Inc. System for purifying a liquid
US12508545B2 (en) 2014-10-27 2025-12-30 Electrophor Inc. Liquid purification system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112321022A (en) * 2020-11-02 2021-02-05 深圳弘扬环保设备有限公司 Mineralizing device capable of improving quality of drinking packaging water

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0571744B1 (en) * 1992-05-21 1997-01-15 DaimlerChrysler Aerospace Airbus Gesellschaft mit beschränkter Haftung Process and apparatus for the treatment of waste water, especially for aircraft
US6761826B2 (en) * 2001-11-30 2004-07-13 New Star Lasers, Inc. Pulsed blackbody radiation flux enhancement
US6858145B2 (en) * 2002-09-12 2005-02-22 Chemitreat Pte Ltd Method of removing organic impurities from water
US7306724B2 (en) * 2004-04-23 2007-12-11 Water Standard Co., Llc Wastewater treatment
WO2007010549A1 (en) * 2005-07-20 2007-01-25 Mahesh Gupta A household reverse osmosis based drinking water purifier
AU2010246959A1 (en) * 2009-05-13 2012-01-12 Renewed Water Minerals Ltd. Separation of Mg2+ ions from sea-and brackish water for the purpose of re-mineralization of water and wastewater
US8486275B2 (en) * 2009-05-14 2013-07-16 Omni Water Solutions, Inc. Self-contained portable multi-mode water treatment system and methods

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12508545B2 (en) 2014-10-27 2025-12-30 Electrophor Inc. Liquid purification system
US11103830B2 (en) 2015-09-02 2021-08-31 Electrophor, Inc. Method for purifying a liquid
US11439955B2 (en) 2015-09-02 2022-09-13 Electrophor, Inc. System for purifying a liquid

Also Published As

Publication number Publication date
WO2012112045A3 (en) 2012-11-15
NL2006241C2 (en) 2012-08-20

Similar Documents

Publication Publication Date Title
Särkkä et al. Recent developments of electro-oxidation in water treatment—A review
Al-Bastaki Performance of advanced methods for treatment of wastewater: UV/TiO2, RO and UF
CN104136112B (en) The preparation of graininess oxide adsorbent and use the method for treating water of this adsorbent
RU2008105554A (en) METHOD FOR PROCESSING WATER CONTAINING DIFFICULTLY DECOMPOSABLE SUBSTANCE
RU2015119304A (en) Treatment of produced water to remove organic compounds
RU2006126635A (en) METHOD FOR CLEANING RAW WATER CONTAINING DIFFICULTY DECOMPOSABLE SUBSTANCE
KR20070095226A (en) Membrane Modules and Water Treatment Systems
Nguyen et al. Effect of granular activated carbon filter on the subsequent flocculation in seawater treatment
WO2012112045A2 (en) Method for cleaning water, as well as water cleaning device
US20090321336A1 (en) Filter for water potabilization and a process for realization of the filter
CN104086036B (en) A kind of method for treating water
KR100473532B1 (en) Purifying system for hollow yarn membran and operation method of the purifying system
JP2015123442A (en) Wastewater treatment mechanism
Nguyen et al. Chemical cleaning of ultrafiltration membrane fouled by an activated sludge effluent
Kabsch-Korbutowicz Ultrafiltration as a method of separation of natural organic matter from water
Dolar et al. Combined Methods of Highly Polluted Pharmaceutical Wastewater Treatment--a Case Study of High Recovery.
CN114014479A (en) Advanced treatment method of petrochemical wastewater
Al-Msiedeen et al. Removal of Eriochrome Black T (EBT) and Its Pb (II)-, Cu (II)-, and Zn (II)-Based Metal Complexes from Aqueous Solutions Using Spent Coffee Grounds: Part A–Characterization and Adsorption Isotherms
JP2007203144A (en) Water treatment method and water treatment equipment
WO2013061057A1 (en) Water treatment methods and systems
US20250250441A1 (en) Ecofriendly nanocomposites for portable water purification
Zahoor et al. Removal of 2, 4-D from water, using various adsorbents in combination with ultrafiltration
Sanaka et al. Experimental Analysis of a Sustainable Water Purifier Using Bamboo Charcoal
Mediana et al. Utilization of Fly Ash For the Pretreatment Process of Rubber Industry Wastewater Processing Using Hybrid Membrane UF-RO
Kaewjan et al. Effects of microplastic on submerged nanofiltration for advanced drinking water treatment

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A, DATED 11-11-13)

122 Ep: pct application non-entry in european phase

Ref document number: 12721961

Country of ref document: EP

Kind code of ref document: A2