CN1662449A - Water purification system - Google Patents

Water purification system Download PDF

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Publication number
CN1662449A
CN1662449A CN038140489A CN03814048A CN1662449A CN 1662449 A CN1662449 A CN 1662449A CN 038140489 A CN038140489 A CN 038140489A CN 03814048 A CN03814048 A CN 03814048A CN 1662449 A CN1662449 A CN 1662449A
Authority
CN
China
Prior art keywords
water
unit
chamber
chemical purification
chemical
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
CN038140489A
Other languages
Chinese (zh)
Other versions
CN1331762C (en
Inventor
M·M·米斯特里
N·穆克赫吉
P·J·奈尔
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.)
Unilever NV
Original Assignee
Unilever NV
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 Unilever NV filed Critical Unilever NV
Publication of CN1662449A publication Critical patent/CN1662449A/en
Application granted granted Critical
Publication of CN1331762C publication Critical patent/CN1331762C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • C02F9/20—Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems
    • 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
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • 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
    • C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
    • C02F1/685—Devices for dosing the additives
    • C02F1/688—Devices in which the water progressively dissolves a solid compound
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • C02F1/766—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens by means of halogens other than chlorine or of halogenated compounds containing halogen other than chlorine
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/18—Removal of treatment agents after treatment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/18—Removal of treatment agents after treatment
    • C02F2303/185—The treatment agent being halogen or a halogenated compound

Landscapes

  • Water Supply & Treatment (AREA)
  • Clinical Laboratory Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Sorption (AREA)
  • Biological Treatment Of Waste Water (AREA)
  • Treatment Of Water By Ion Exchange (AREA)
  • Filtration Of Liquid (AREA)

Abstract

The invention provides a gravity fed water purification system comprising a filtration unit adapted to filter particulate material, and a chemical purifying unit containing a chemical purifying agent, in which the chemical purifying unit is housed in a sealed chamber and is in fluid communication with the filtration unit such that water treated by the filtration unit is then gravity fed into the chemical purifying unit and retained therein for a predetermined period, after which the water exits the system via a scavenger means which is adapted to recover leached chemical purifying agent. The system ensures the delivery of microbiologically pure water of high quality whilst maintaining the simplicity and advantages of gravity fed filtration systems.

Description

Water purification system
Invention field
The present invention relates to a kind of water purification system, especially a kind of flow by gravity water purification system that produces and distribute high quality to purify waste water.
Background technology
Because the supply of water is just polluted day by day, the technology of therefore improving relevant water purification is very important.Many water bodys have become contaminated to a very high degree, so just need better water purification system.
In the water, especially exist undesirable and potential deleterious pollutent to be paid close attention in the tap water by many people.This concern has caused is in and the demand of other place to water treating equipment.Many water treatment treatment facilities and method removed by having developed into or neutralization chemistry with pollutent particulate.Some of them equipment and method are come treating water in conjunction with chemically reactive substance.For example, gac can be removed bad taste and smell from water, also can remove chlorine and other reactive chemicals.Ion exchange resin is used for removing metal and other ion from water.Yet, do not find that one matter or chemical can remove all pollutents.
Except chemistry and pollutent particulate, also often contain biological pollutant in the water.Usually can not remove these pollutents fully with gac, ion exchange resin or other chemically reactive water purifier.Biological pollutant may be subjected to harsh chemically treated the influence easily, maybe can not be easy to be incorporated in the flow by gravity treatment unit but these chemical are typically pollutent, and especially those are suitable for the device of family expenses.Many these biological pollutants, as be similar to protozoon packing like latent sporule (cryptosporidium), except that the removal of being undertaken by standard chemical process is had the resistibility, and its size only has several microns.
Some water purification systems are available.Purifying sheet, boiling etc. often is used.Water treating equipment are well-known technology.These equipment can be in water system directly use, or online or in terminal, or in the system of self-contained sequence batch (.An example of on-line system is concealed equipment, is used for filtered water before water arrives water tap.Terminating unit comprises work top and is equipped with the water tap of filtration unit.The system of self-contained sequence batch (comprises flow by gravity system or water bottle formula (carafe) unit.
Iodinated resin systems also has been used to the disinfectant soup water.These systems comprise the iodide molecules in the resin bed, and iodide molecules tightly is bound by basic multipolymer with the form of pearl---on the ion exchange resin, and a vinylbenzene/Vinylstyrene (DVB) multipolymer normally.Water forms turbulent flow by this resin bed.This turbulent flow forces these microorganisms, as bacterium, protozoon packing and virus, fully contacts with iodinated beads.The result of contact, iodine is transferred to these microorganisms with the form of molecular iodine, carries out redox reaction with microorganism, makes microorganism deactivated.
Iodine is also entered in the water by elution with small amount, typically about 0.5ppm.The accurate amount that discharges residual iodine is subjected to the residence time, temperature, flow velocity, and the ion concentration in the water inlet and the influence of type.
(Harrison First International Inc.1996) has disclosed a portable water and has purified and drink equipment US5518613, and this equipment is designed to remove the potential deleterious parasite of 1-2 micron size from water to be clean.This equipment comprises chemical purification reagent and chamber, and it allows to purify inductive phase.Thereby this function of this equipment is to rely on required pressure drop to move this fluid by conduit, and its scope is 1-5psi (suction by user's mouth produces).
The charcoal piece that is used to filter out packing also is a kind of well-known purification medium.
(Recovery Engineering Inc.1995), discloses a kind of water correction plant to WO9529878, comprises comprising iodinated resin unit and the unitary disinfection unit of gac.Ultimate principle is to keep the volume of chamber and flow rate of liquid so that bacterium, virus and other pollutent inactivation.Also be that liquid flow is evenly advanced in essence, enter so unitary liquid first part guiding liquids stream not with preceding or after the liquid mixing that enters.
Yet practice has shown by using iodinated resin and only keeping piston flow and the Artificial Control waiting time reaches that removal is impossible to the packing ideal.
Like this, although have above-mentioned available knowledge and present known multi-form filtration/refining plant, the high microorganism that can not realize ideal in simple flow by gravity filtering system purifies.
The invention provides a kind of simple and economical flow by gravity water purification system, the high microorganism that can realize ideal purifies.This system comes varying dimensions to be applicable to family/resident according to user's demand.
Summary of the invention
The invention provides a kind of flow by gravity water purification system, comprise and be suitable for filter particulate material, with the chemical purification unit that comprises chemical purification reagent, wherein chemical purification unit is positioned in the airtight chamber, and with filtering unit with fluid communication, water after handling via filtering unit like this to chemical purification unit, and stops predetermined amount of time with regard to flow by gravity therein, and water is discharged this system through the removal device that is suitable for reclaiming leached chemical purification reagent afterwards.
Advantage is, system of the present invention effectively combines the filtering unit and the chemical purification unit of particulate matter, therefore not only particulate matter (being typically those particles greater than 2 microns) is separated, and the water of no particulate matter after filtering utilizes chemical purification agent treated time enough section guarantee carrying high-quality microbially decontaminate water subsequently, and keeps the simplicity and the superiority of flow by gravity filtering system.
Describe in detail and preferred embodiment
Flow by gravity water purification system of the present invention typically comprises clean unit, and this clean unit comprises the top chamber and the floor chamber of being separated by spacer.Filtering unit typically is stable on the spacer and is placed on top chamber, and chemical purification unit is placed on floor chamber.
Preferred filtering unit comprises the charcoal piece.
In order to guarantee effective processing, it is very important that water stops time enough in chemical purification unit.
Typically, realize from the water discharge passage of chemical purification unit that described like this water could be discharged from water discharge passage when having stopped the time of determining in chemical purification unit by source of configuration in structure.。
Preferably water discharge passage comprises one or more pipes, and this pipe has the import that just is lower than the spacer between top and floor chamber.
Water discharge passage is connected with the removal device that is used to reclaim leached chemical purification reagent.Preferably this refining plant comprises the bacteriostatic activity carbon of the collecting chamber of packing into.
According to the present invention, the specific implementations of water purification system is recited in Fig. 1-3.As shown in Figure 1, this system comprises a clean unit, and this clean unit comprises the top chamber (TC) and the floor chamber (BC) of separating by spacer (PR).Charcoal piece (CB) is fixed on the top of spacer and resin cartridge (CR) fluid communication in the floor chamber (BC).This resin cartridge (CR) comprises chemical purification reagent.Floor chamber (BC) provides the pipe (P) that always extends to the level that just is lower than spacer (PR) from bottom sealed side (BS) beginning.Size of this pipe (P) and position control water in floor chamber (BC) thus residence time control water and the duration of contact of the purification reagent in the resin cartridge (CR).The water of discharging from resin cartridge (CR) is guided by columned water discharge pipe (J).Water concentrates on chamber (BC) and locates and flow into a shared water reservoir (H) downwards until the inlet (I) that water level arrives pipe (P), flows to the removal unit (SC) that hangs in the distribution chamber (DC) then.The water of collecting in the collecting chamber (CC) can distribute by the tap (T) for the user.
Fig. 2 is an another embodiment of the invention, and wherein this system comprises clean unit, and this clean unit comprises the top chamber (TC) and the floor chamber (BC) of separating by spacer (PR).Charcoal piece (CB) be fixed on spacer (PR) the top and with resin cartridge (CR) fluid communication of the bottom that is positioned at spacer (PR).Being collected in flowing to of floor chamber (BC) under water is arranged in the collecting chamber (CC) on the unitary basis (B).Water concentrates in the collecting chamber (CC) and reaches the height of removing unit (SC) until the water surface, and this removes unit and collecting chamber (CC) fluid communication.Current are collected in the distribution chamber (DC) after removing unit (SC) and can distribute by user's tap (T).
Fig. 3 is the further embodiment of the present invention, and it can be installed on the bubble roof divider that has pressure equalization means.
As shown in Figure 3, this system includes the clean unit of top chamber (TC) and floor chamber (BC), and these two chambers are maintained at the conditions of hermetic seal and are separated by spacer (PR).Charcoal piece (CB) provides the filtration to particulate matter, and tube (CR) provides chemical purification.Equipressure between the top of the top that keeps floor chamber and top chamber provides pressure equalization means/valve (PV).Chamber (C) provides from bottom sealed side (BS) and begins to extend until just being lower than spacer (PR) pipe (P) highly.Water concentrates on chamber (C) and arrives the inlet (I) of pipe and flow into shared water reservoir (H) downwards until the horizontal plane of water, flows in the removal unit (SC) that hangs in the floor chamber (BC) then.The clean unit of describing in detail above be installed in the top of distribution chamber (DC) and in floor chamber by being connected that middle perforate and divider are remained valid, this centre perforate further extends to dispenser top with the form of nozzle (NZ).This divider provides tap (T), can realize the supply regulated of having purified waste water by this tap.
Operation according to system of the present invention is as follows:
This purification system comprises the top chamber that prefilter is installed, and described prefilter is made by coarse deposits strainer and activated carbon, thereby can remove chlorine, organism, particulate matter and pathogenic packing.Water enters chemical purification unit after filtering, and this chemical purification unit contains chemical purification reagent, for example iodine and chlorine, and it is fit to impregnate on inert support, for example ion exchange resin.When current during through this chemical purification unit, can be from resin the molten chemical purification reagent that goes some amount.After water flows through the unit that comprises bacteriostatic activated carbon and/or ion exchange resin or any other known devices and keeps a residence time, chemical purification reagent just can be removed, and this residence time is a water from being not less than time period of 30 minutes after chemical purification unit is discharged.
The preferred residence time is the scope at 30-300 minute, more preferably 60-180 minute.
The example that microorganism causes death and packing is removed
The tap water of 1200 liters of Mumbai municipal administration supplies contains 10 7Phage/the ml of unit, 10 5Packing/the l of unit and 10 8Bacterium/the ml of unit only has one type organic microbial simultaneously.Water is filtered by the water purifier of describing as Fig. 1 (embodiment 1) of the present invention.In embodiment 2, the structure of this water purifier such as embodiment 1 but do not introduce the charcoal piece.In embodiment 3, use be a kind of strainer of traditional type.
Table 1
Embodiment Phage Packing Bacterium
Embodiment 1 ????0 ????0 ????0
Embodiment 2 ????0 ??10 5Individual/l ????0
Embodiment 3 ??10 4Individual/ml ????0 ????0
Data in the table 1 show that the water purifier among the present invention realized microorganism killing completely.

Claims (4)

1. flow by gravity water purification system, comprise the chemical purification unit that is suitable for filter particulate material and comprises chemical purification reagent, wherein chemical purification unit be placed in the airtight chamber and with filtering unit with fluid communication, water flow by gravity after handling via filtering unit like this enters chemical purification unit and stops predetermined amount of time therein, and water is discharged this system through the removal device that is suitable for reclaiming leached chemical purification reagent afterwards.
2. water purification system as claimed in claim 1, it comprises clean unit, this clean unit comprises the top chamber and the floor chamber of being separated by spacer, and wherein filtering unit is stable on the spacer and is placed on top chamber, and chemical purification unit is placed on floor chamber.
3. water purification system as claimed in claim 1 or 2, wherein this filtering unit comprises the charcoal piece.
4. one kind as each described water purification system among the claim 1-3, and the water discharge passage that is derived from chemical purification unit wherein is provided in structure, and described like this water could the drainage water discharge-channel up to stopped the time of determining in chemical purification unit after.
CNB038140489A 2002-06-19 2003-05-22 Water purification system Expired - Fee Related CN1331762C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
IN539/MUM/2002 2002-06-19
IN539MU2002 2002-06-19
EP02255472 2002-08-05
EP02255472.9 2002-08-05
PCT/EP2003/005468 WO2004000732A1 (en) 2002-06-19 2003-05-22 Water purification system

Publications (2)

Publication Number Publication Date
CN1662449A true CN1662449A (en) 2005-08-31
CN1331762C CN1331762C (en) 2007-08-15

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CNB038140489A Expired - Fee Related CN1331762C (en) 2002-06-19 2003-05-22 Water purification system

Country Status (9)

Country Link
CN (1) CN1331762C (en)
AR (1) AR039681A1 (en)
AU (1) AU2003240707A1 (en)
BR (1) BR0311779A (en)
MX (1) MXPA04012523A (en)
MY (1) MY130646A (en)
PL (1) PL212324B1 (en)
RU (1) RU2344085C2 (en)
WO (1) WO2004000732A1 (en)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN101466644B (en) * 2006-06-12 2011-08-03 荷兰联合利华有限公司 A biocide cartridge
CN101711227B (en) * 2007-04-18 2013-05-29 荷兰联合利华有限公司 Disinfectant device and process

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US7441665B2 (en) 2003-10-01 2008-10-28 Halosource, Inc. Water purification cartridge
PL380684A1 (en) * 2004-03-19 2007-03-05 Unilever N.V. Water purification system
US8167141B2 (en) 2004-06-30 2012-05-01 Brita Lp Gravity flow filter
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WO2007000238A1 (en) * 2005-06-29 2007-01-04 Unilever N.V. Device for dispensing a unit-dose of disinfecting agent
USD615150S1 (en) 2007-09-20 2010-05-04 Omnipure Filter Co., Inc. Filter block for liquid filtration
MX2011003140A (en) * 2008-09-23 2011-05-25 Unilever Nv Water purification device.
EP2184263A1 (en) 2008-11-06 2010-05-12 Unilever N.V. Water purification device
EP2189421A1 (en) 2008-11-24 2010-05-26 Unilever N.V. A total mass flow meter and a water purification device
PL2384234T3 (en) 2009-01-30 2013-02-28 Unilever Nv A filter
AU2011295283B2 (en) 2010-08-24 2014-03-06 Unilever Plc Water purification device comprising a gravity- fed filter
MX2013004907A (en) 2010-11-01 2013-05-22 Unilever Nv A residence time chamber.
WO2013053627A1 (en) 2011-10-10 2013-04-18 Unilever N.V. A faucet mounted liquid fortificant dosing device and dispension method
MX2014006245A (en) 2011-11-24 2014-10-17 Indian Inst Technology Multilayer organic-templated-boehmite-nanoarchitecture for water purification.
CN104520706B (en) 2012-04-17 2017-03-01 印度理工学院 Usage amount submanifold detects discharge
CN104870376B (en) 2012-12-20 2016-11-23 荷兰联合利华有限公司 Tablet composition for automatic-closing mechanism

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101466644B (en) * 2006-06-12 2011-08-03 荷兰联合利华有限公司 A biocide cartridge
CN101711227B (en) * 2007-04-18 2013-05-29 荷兰联合利华有限公司 Disinfectant device and process

Also Published As

Publication number Publication date
AR039681A1 (en) 2005-03-09
RU2005101082A (en) 2005-07-10
PL375198A1 (en) 2005-11-28
RU2344085C2 (en) 2009-01-20
MY130646A (en) 2007-07-31
MXPA04012523A (en) 2005-02-17
PL212324B1 (en) 2012-09-28
BR0311779A (en) 2005-03-08
AU2003240707A1 (en) 2004-01-06
WO2004000732A1 (en) 2003-12-31
CN1331762C (en) 2007-08-15

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