CN101522578A - Water purification including disinfection, oxidation and arsenic removal - Google Patents
Water purification including disinfection, oxidation and arsenic removal Download PDFInfo
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- CN101522578A CN101522578A CNA2007800368204A CN200780036820A CN101522578A CN 101522578 A CN101522578 A CN 101522578A CN A2007800368204 A CNA2007800368204 A CN A2007800368204A CN 200780036820 A CN200780036820 A CN 200780036820A CN 101522578 A CN101522578 A CN 101522578A
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- Prior art keywords
- unit
- resin
- water purification
- iodine
- arsenic
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 132
- 238000000746 purification Methods 0.000 title claims abstract description 54
- 230000003647 oxidation Effects 0.000 title claims abstract description 7
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 7
- 229910052785 arsenic Inorganic materials 0.000 title claims description 112
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 title claims description 112
- 238000004659 sterilization and disinfection Methods 0.000 title description 6
- 239000011630 iodine Substances 0.000 claims abstract description 85
- 229910052740 iodine Inorganic materials 0.000 claims abstract description 85
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims abstract description 84
- 239000011347 resin Substances 0.000 claims abstract description 82
- 229920005989 resin Polymers 0.000 claims abstract description 82
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 35
- 239000000460 chlorine Substances 0.000 claims abstract description 35
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000002516 radical scavenger Substances 0.000 claims abstract description 9
- 230000002000 scavenging effect Effects 0.000 claims abstract description 9
- 239000003957 anion exchange resin Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 229920002536 Scavenger resin Polymers 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 244000005700 microbiome Species 0.000 claims description 9
- 239000011800 void material Substances 0.000 claims description 9
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims description 5
- 239000003456 ion exchange resin Substances 0.000 claims description 5
- 229920003303 ion-exchange polymer Polymers 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- CEJLBZWIKQJOAT-UHFFFAOYSA-N dichloroisocyanuric acid Chemical class ClN1C(=O)NC(=O)N(Cl)C1=O CEJLBZWIKQJOAT-UHFFFAOYSA-N 0.000 claims description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 3
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 229910052726 zirconium Inorganic materials 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 229910001385 heavy metal Inorganic materials 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 239000011572 manganese Substances 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 239000003403 water pollutant Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 description 10
- 238000004140 cleaning Methods 0.000 description 7
- -1 5-nitroorotic acid sylvite monohydrate Chemical class 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000012620 biological material Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 150000002894 organic compounds Chemical class 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- MSFGZHUJTJBYFA-UHFFFAOYSA-M sodium dichloroisocyanurate Chemical compound [Na+].ClN1C(=O)[N-]C(=O)N(Cl)C1=O MSFGZHUJTJBYFA-UHFFFAOYSA-M 0.000 description 4
- 230000001954 sterilising effect Effects 0.000 description 4
- 230000035622 drinking Effects 0.000 description 3
- 230000014509 gene expression Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 241000607142 Salmonella Species 0.000 description 2
- 241000607768 Shigella Species 0.000 description 2
- 241000191967 Staphylococcus aureus Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910003439 heavy metal oxide Inorganic materials 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 229920001467 poly(styrenesulfonates) Polymers 0.000 description 2
- 235000011164 potassium chloride Nutrition 0.000 description 2
- 239000001103 potassium chloride Substances 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 229910001948 sodium oxide Inorganic materials 0.000 description 2
- KDNCILYKSYKEFJ-UHFFFAOYSA-N sodium;benzenesulfonyl(chloro)azanide Chemical compound [Na+].Cl[N-]S(=O)(=O)C1=CC=CC=C1 KDNCILYKSYKEFJ-UHFFFAOYSA-N 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 230000009967 tasteless effect Effects 0.000 description 2
- KEQGZUUPPQEDPF-UHFFFAOYSA-N 1,3-dichloro-5,5-dimethylimidazolidine-2,4-dione Chemical compound CC1(C)N(Cl)C(=O)N(Cl)C1=O KEQGZUUPPQEDPF-UHFFFAOYSA-N 0.000 description 1
- DJHGAFSJWGLOIV-UHFFFAOYSA-K Arsenate3- Chemical compound [O-][As]([O-])([O-])=O DJHGAFSJWGLOIV-UHFFFAOYSA-K 0.000 description 1
- QDHHCQZDFGDHMP-UHFFFAOYSA-N Chloramine Chemical compound ClN QDHHCQZDFGDHMP-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 206010008631 Cholera Diseases 0.000 description 1
- 206010012735 Diarrhoea Diseases 0.000 description 1
- 240000003826 Eichhornia crassipes Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000194033 Enterococcus Species 0.000 description 1
- 208000032400 Retinal pigmentation Diseases 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 208000037386 Typhoid Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 229940000489 arsenate Drugs 0.000 description 1
- FGIWMSAVEQNPPQ-UHFFFAOYSA-N arsenic;hydrate Chemical compound O.[As] FGIWMSAVEQNPPQ-UHFFFAOYSA-N 0.000 description 1
- 125000000223 arsonoyl group Chemical group [H][As](*)(*)=O 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 229920001429 chelating resin Polymers 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 231100000739 chronic poisoning Toxicity 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 208000001848 dysentery Diseases 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Inorganic materials Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000000968 intestinal effect Effects 0.000 description 1
- 150000002496 iodine Chemical class 0.000 description 1
- YWXYYJSYQOXTPL-SLPGGIOYSA-N isosorbide mononitrate Chemical compound [O-][N+](=O)O[C@@H]1CO[C@@H]2[C@@H](O)CO[C@@H]21 YWXYYJSYQOXTPL-SLPGGIOYSA-N 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 150000001455 metallic ions Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 201000008297 typhoid fever Diseases 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Images
Classifications
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- 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
- C02F1/002—Processes for the treatment of water whereby the filtration technique is of importance using small portable filters for producing potable water, e.g. personal travel or emergency equipment, survival kits, combat gear
-
- 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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- 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
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
- C02F1/505—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment by oligodynamic treatment
-
- 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/422—Treatment of water, waste water, or sewage by ion-exchange using anionic exchangers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/103—Arsenic compounds
-
- 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
- C02F2103/06—Contaminated groundwater or leachate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/32—Details relating to UV-irradiation devices
- C02F2201/322—Lamp arrangement
- C02F2201/3222—Units using UV-light emitting diodes [LED]
-
- 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
- C02F2303/185—The treatment agent being halogen or a halogenated compound
-
- 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
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
Water purification in a unit with a number of compartments, where water flows successsively through these compartments, the unit comprising - a compartment with an iodine releasing resin for killing microbes in water, - a downstream compartment with an iodine scavenger, the iodine scavenger being configured for releasing chlorine during iodine scavenging, the amount of released chlorine being configured for oxidation of trivalent arsenide to pentavalent arsenide, - a further downstream compartment with a arsenide removal resin configured for removal of arsenide from the water.
Description
Invention field
The present invention relates to be used for portable system and method from the underground water arsenic removal.
Background technology
Arsenic is the natural pollutant that appears in most of underground water, for example in many states of the Bangladesh and the U.S..Because it is tasteless that its nothing is smelt, therefore when drinking arsenical water, there is not perceptible caution usually.Especially in Bangladesh, many people suffer from chronic poisoning, occur meeting pain, discomforting skin pigment precipitation and cocoon on palm and arm.For example, according to interconnected network address
On the http://www.sos-arsenic.netInformation, in India, 48.7% water sample has the arsenic concentration that is higher than 10ppb and 23.8% water sample has the arsenic concentration that is higher than 50ppb.In Bangladesh, these values are respectively 43.0% and 31.0%.There are 9 million peoples almost to drink to contain above the water of 10ppb arsenic and have 7 million peoples to drink the water that contains above 50ppb arsenic in India.These facts cause concern increase low-cost but remove the means of arsenic effectively from underground water.
Typically from water, remove arsenic and relate to use iron, aluminium, manganese, zirconium and titanium or other heavy metal oxide or anionite-exchange resin.As Alcan
And Adedge
Developed and be used for the iron content that arsenic removes or the medium of aluminum oxide in company.Dow Chemical Co. has developed based on the arsenic of titanium and has removed medium (Adsorbsia
TMGTO
TM).
Usually, arsenic is trivalent form and pentavalent form, wherein trivalent arsenic As in water
+ 3(it can be for example with H for form
3AsO
3Or AsO
2-Exist) be considered to have more toxicity, and pentavalent arsenic form As
+ 5(for example with HAsO
4 --Exist) be easier to remove.Therefore, in ordinary method with As
+ 3Be oxidized to As
+ 5Be lower than certain content so that total arsenic content is reduced to, be usually less than 10 micrograms per litre, corresponding to 10ppb (per 1,000,000,000 parts umber).
De Esparza is at United States Patent (USP) the 6th, 461, discloses a kind of system of removing arsenic from underground water in No. 535.In this patent, use clay, peptizer such as iron(ic) chloride and Tai-Ace S 150, and oxygenant such as Losantin are adsorbed on arsenic on the colloid admixture that solidifies.For for before drinking clay being settled down, need 15-20 minute waiting time from water at water.
Disclose a kind of different system in European patent application EP 1 568 660, wherein removed arsenic with strong basic type anion-exchange resin, this resin comprises at least a its arsenate to have and is not more than 10
-5K
SpMetal ion or metallic ion.
In the rural area that lacks cleaning drinking-water, commercially available desalt extracting unit has obtained the ubiquity that increases.This unit by the Vestergaard Frandsen Group with LifeStraw
Sell.This unit is used for directly coming filtered water by this unit and sending in the mouth from water source water intaking.This suction unit is compact and have mouthpiece (mouth piece), is about 31cm and wide 29mm, and available immediately.The water that is removed can directly be quoted for the people safely.This unit comprises specifically developed resin based on halogen, and it is kill bacteria (as Shigella (Shigella), salmonella (Salmonella), enterococcus spp (Enterrococus), streptococcus aureus (StaphylococcusAureus) and intestinal bacteria (E.Coli)) when contact especially effectively; The fabric prefilter is equal to or greater than 6 microns with removal, preferably is equal to or greater than 15 microns particle; With gac to keep too much iodine and bad aroma and flavor here.This unit can be removed invasive organism effectively, but these microorganism spread diarrhoea, dysentery, typhoid fever and cholera.Though have many advantages, that is, almost immediately with the ability of water sterilization, the cost of low weight, portable construction, device is low, makes it be fit to be distributed in poor area, and it can not remove arsenic effectively from water.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of water cleaning device of compactness, it is preferably LifeStraw
Form, it also is suitable for removing arsenic.
This purpose has a plurality of compartments so that water flows through the water purification unit realization of these compartments successively by a kind of, and this unit comprises:
-have a compartment that the iodine that is used for killing the water microorganism discharges resin,
-having the downstream compartment of iodine scavenging agent, the iodine scavenging agent is set to discharge chlorine in the iodine scavenging process, and the chlorine dose that discharges is set to be used for trivalent arsenic (As+III) is oxidized to pentavalent arsenic (As+V),
-other the downstream compartment with arsenic removal resin, arsenic is removed resin and be set to remove arsenic from water.
Use purification unit of the present invention, a kind of compact apparatus is provided, it is of use not only in water purification on the general basis, and is used to remove arsenic.This compactness performance realizes to help arsenic to remove by using chlorine successfully trivalent arsenic to be oxidized to pentavalent arsenic.Therefore, the present invention is used to from the fully combination of the knowledge of different field, promptly in main poor tropic countries with compact, portable unit (as
The combination of the technology that technology of purifying waste water and the arsenic in Modern Family's device or bigger facility are removed.
Be understood that the lower cost of the present invention makes the water that the immiseration area not only can biologically be cleaned, and can obtain not having simultaneously the water of arsenic.
Product has obtained the ubiquity that increases gradually in being difficult to obtain the remote districts of clean water, and has the expansion that arsenic is removed ability
Product does not have high cost for the end user.Provide having cheaply of this compactness to comprise this fact of product of the high quality detergency ability that arsenic is removed in remote districts, obviously be different from United States Patent (USP) N0.6,461,535, narrate during the 1st hurdle 49-57 is capable " yet; from water, remove chemical element, need more complicated method such as arsenic.In developed country, reverse osmosis, ion-exchange and gac are the common technologies of purified water in large-scale coalescent district.Yet for a small amount of population in living in remote districts, above-mentioned common technology is for remove impurity from underground water, as arsenic, is restricted usually or impossible.”
By the present invention, ion-exchange and gac all can use, and this will understand hereinafter that its cost and compactedness can not hinder in remote residence and even very obtain clean water in the poverty-stricken area.Therefore, can significantly reduce the disease of propagating with the inferior quality tap water, if it is government and non governmental organization help these compact apparatus to distribute in the resident of poverty-stricken area, especially true.
Yet, it should be noted that application of the present invention is not limited to poor remote districts, and can be used in multiple other application.For example, because its compactedness, it also is applicable to general outdoors.Especially in US mountainous regions, water there is clean at first glance and be fit to drink, but contain have or not smell, the tasteless and toxic arsenic of tool because dual-use function of the present invention, the user can guarantee this in light weight, portable unit, removes as the arsenic of expansion and uses
And suffer from the disease that arsenic brings out after preventing, wherein biology purifies and chemical purification can be carried out the degree that reaches capable of direct drinking simultaneously by unit of the present invention.
In preferred embodiments, the iodine scavenger resin is strong ion exchange resin, for example strong basic type anion-exchange resin.Select this resin to promote described unitary compactedness.The well-known activated carbon for iodine removal that is to use.Yet this material is the equally effective and sizable amount of needs not as strong ion exchange resin.In order to obtain compact unit, especially exist
Under the situation of product, studied with strong basic type anion-exchange resin and replaced.As mentioned above, use this resin to open to need not to lose compactedness and with the possibility of arsenic oxidation.
The material standed for of iodine scavenging agent-chlorine wash-out resin is a strong basic type anion-exchange resin, its partly or fully load have the non covalent bond that can discharge chlorine during by this resin to be connected to organic compounds at water.Preferably, this organic compound is that dichloroisocyanuric acid salt is (from dichloroisocyanuric acid sodium, be also referred to as 1,3-two chloro-1,3,5-triazines-2,4-diketone-6-sodium oxide or " NaDCC ") or chloramine B (chloramine-B) hydrate or 1,3-two chloro-5,5-T10 or 5-nitroorotic acid sylvite monohydrate, it for example is described among patent application US 2005/0029493 A1.Other are chosen as disclosed resinous type in US 4382862.
Randomly, arsenic is removed medium can comprise activated alumina, and it for example is called AAFS50's by commercially available name
Medium is known.Perhaps, arsenic is removed medium and is comprised ferric oxide, and it for example is called AD33R or AD33L by commercially available name
Resin is known.These commercial resins contain arsenic absorption material.Therefore, under the situation that these commercial resins or medium use, can utilize As (III) to reduce the amount of these commercial resins or medium, thereby mainly utilize As (V) to remove performance to the oxychlorination of As (V) in the present invention.Because the price of these materials is higher, the minimizing of the amount of these commercial resins or medium is very favourable.Also be owing to this reason, being considered to useful measure is thin layer of ferric oxide, and it may be rich in that aluminum oxide or oxidized aluminium substitute or be substituted by other heavy metal oxide such as manganese, zirconium or titanium oxide.
Iodine need act on certain hour and learn the purification result to obtain good biological.Depend on action time from iodine and discharge resin flowing to the iodine scavenging agent.
Situation under, through port is drunk by this compact unit if water is directly drawn from the water source that pollutes, and then may need prolonged action time, this can comprise between resin and the iodine scavenger resin that void space realize by discharging at iodine.At this moment, the volume that should select void space is with water being drawn by described when installing in the mouth, during common water flows through described volume, provides the iodine that prolongs substantially and the reaction times between the water pollutant.Term ＂ prolongs the prolongation that ＂ is contained flowing time substantially, and it is flowing through the order of magnitude that iodine discharges the time of resin compartment usually.For this reason, the volume of void space can be suitable with the volume of the compartment with iodine release resin.For the LifeStraw product, flow velocity is approximately 100-150ml/ minute, and this also can be realized having under the situation of suitable design by the present invention.
In addition, in order to remove excessive chlorine and to improve taste or odor properties, can choose wantonly to one or several compartments gac is provided through the water of cleaning.Similarly, remove for iodine, can choose wantonly provides or several compartments that contain gac (for example granular carbon (GAC) form).As another selection, GAC can bear Ag-bearing.
Can remove the downstream use gac of resin at iodine.The advantage of this set is that described removing resin mainly absorbs iodine and discharges the chlorine that is used for the arsenic oxidation, for example is the chlorine of hypochlorite anionic form.Perhaps, can remove the upstream use gac of resin at least partly to remove iodine at iodine.In the third is provided with, iodine can be removed the resin branch in two or more compartments removing all iodine, and gac can be placed these iodine to remove between two of resin compartments.In the 4th kind is provided with, gac and iodine can be removed mixed with resin together.
The present invention can be used in many physical implementation schemes.Yet the scheme of preferably utilizing high compactedness potentiality is portable water purification unit, for example, and piped, as
Product.For the ease of carrying everywhere, this unit advantageously is shorter than 40cm, or even is shorter than 35cm.For example
Length with 31cm, the dry weight of the width of 29mm and 95 grams.Therefore, the described unit in portable embodiment preferably has less than 50mm, even less than the diameter of 40mm.As
This pipe can be furnished with mouthpiece and be used for water is drawn by this unit.
Should regulate the amount and the efficient of chlorine release resin and remove, for example be low to moderate the level that is lower than 10ppb to obtain certain arsenic.Required for this reason amount of resin depends on arsenic content that flows into water and the target arsenic level that flows out water.Therefore, unit of the present invention can be set to discharge a certain amount of iodine in water; Can be depending on amount and efficient that this a certain amount of iodine is provided with the iodine scavenger resin then.
Unit of the present invention also can be set to discharge a certain amount of reactive chlorine in water; This a certain amount of reactive chlorine is set to be used for the trivalent arsenic of oxidation real mass.For security reasons, although it is low to flow into the arsenic amount that may exist in the water, this resin can be set to the arsenic to high density, for example up to 1,000 or 2, still can guarantee valid function in the scope of 000ppb.Comparatively speaking, what can mention is that the arsenic content in Bangladesh in many water sources is 1200ppb, far surpasses the allowable value of the 50ppb of Bangladesh's tap water.
Unit of the present invention can utilize above-mentioned arsenic to remove as second and remove section.In these multistages were provided with, in first section, water may no longer be that through port is drawn, but utilizes pump, gravity, siphon etc. at least.Perhaps can be in first section treating water in batches or continuously, through port is drawn in other section then.
Under these circumstances, promptly utilize first medium to remove most of arsenic, the arsenic of 50-95% for example, and utilize under second section situation that arsenic content is reduced to low-down level (that is, being lower than the allowable value of 10ppb), multistage setting may be useful.The reason of using two sections or multistage to remove can be that first section product is than second section product considerably cheaper.Therefore, can use cheaply first section to remove the big arsenic content of first part, and can use more expensive second section will remain part arsenic and be removed to the level that is lower than regulation, as 10ppb.
For example, at Shaban W.Al Rmalli etc. in " A biomaterial based approach forarsenic removal from water (based on the measure of the arsenic removal from water of biomaterial) ", J.Environ.Monit. publish, 2005,7, disclose among the 279-282 and can use biomaterial to remove arsenic.The dry root of biomaterial such as aquatic Herba Eichhorniae plant (Eichhornia crassipes) can be removed arsenic from water.In the text, having provided the arsenic clearance is 96% example.Though it is it is slower to remove speed, reaches 80% arsenic clearance in promptly 30 minutes and reaches 96% arsenic clearance in 60 minutes, consequently likely and have the arsenic of improvement and remove potential of performance.These low-cost bio materials can be regarded as the material standed for that first section arsenic is removed that is used for discussed above.
Other useful materials that arsenic is removed can derive from the VeeTech of u s company, P.C., and trade name is G2 and HIX.These products can be material standed for that single stage arsenic removes or are two sections of the present invention or the material standed in the multistage arsenic removal system more.
No matter only use one section also be to use two sections or more multistage remove arsenic, its target is and reduces arsenic to being lower than low-down level, for example the lower level of internationally recognized 10ppb.
Following exemplary value helps to be familiar with the resin relative quantity in the unit of the present invention.The amount of iodine release resin is generally the 5-30% of unit internal volume, preferred 10-25%.The amount of iodine scavenging agent-chlorine wash-out resin is generally the 5-60% of unit internal volume, preferred 10-40%.The amount of arsenic removal medium is generally the 5-80% of unit internal volume.If there is gac, then the total amount of gac is generally the 10-60% of unit internal volume.Part or whole gac can be born Ag-bearing.Activated carbon chamber can be divided into two or several compartments and strategically be placed on described cell enclosure inside.Perhaps, gac other composition with some amberlite lipids or arsenic adsorption medium class can be mixed, for example also be used for product LifeStraw
TMIn resin.
With
Product is compared, and preferably water purification unit of the present invention is a kind of portable unit with mouthpiece, and described mouthpiece is used for water is drawn by this unit, and this element length is less than 40cm, and diameter is less than 50mm.The amount that iodine discharges resin is the 5-30% of this unit internal volume; The amount of iodine scavenging agent-chlorine wash-out resin is that the 5-60% and the arsenic of this unit internal volume is removed the 5-80% of the amount of medium for this unit internal volume.
In further preferred solution, water purification unit has the length of about 30cm and the diameter of about 30mm.The amount that iodine discharges resin is the 10-25% of this unit internal volume; Iodine scavenging agent-chlorine wash-out resin is a strong basic type anion-exchange resin, and its part or complete load have the organic compound of non-covalent keyed jointing, and this organic compound discharges chlorine when water passes through this resin.Preferably, this organic compound is that dichloroisocyanuric acid salt is (from dichloroisocyanuric acid sodium, be also referred to as 1,3-two chloro-1,3,5-triazine-2,4-two-ketone-6-sodium oxide or ＂ NaDCC ＂) or chloramine B hydrate or 1,3 dichloro 5,5 dimethyl hydantoin or 5-nitroorotic acid sylvite monohydrate, this for example is described among the patent US2005/0029493A1, and volume is the 5-60% of this unit internal volume.Randomly, it is AD33 or AAFS50 or its mixture that arsenic is removed medium, or based on the mixture of the arbitrary proportion of the medium of the oxide compound of titanium or manganese or zirconium or other heavy metals or these media, its volume is the 5-80% of this unit internal volume.In addition, purification unit can comprise the compartment with the gac that is used to remove iodine.In addition, purification unit can comprise the compartment with the gac that is used to remove chlorine.The total amount of gac is the 5-60% of this unit internal volume, or even 20-40%.Described charcoal can be born Ag-bearing.Gac can divide indoor and can strategically be placed on described cell enclosure inside at two or more.Perhaps, can be with gac and LifeStraw
TMSome other compositions mix.
Discharge resin as iodine, many products are commercially available, and are also like this for the iodine scavenging agent.By using strong basic type anion-exchange resin (gel type or macropore type) to obtain promising result, this resin for example is the Dowex that is made by Dow Chemical
TMMarathon
TMA (gel-type) or materials similar, or the Dowex that makes by Dow Chemical
TMMarathon
TMMSA (macroporous type) or materials similar.
All above-mentioned different embodiments all can be included in a kind of water purification method, and this method comprises the current of setting up by many order compartments,
-provide to have iodine and discharge the compartment of resin and kill microorganism in the water with the iodine of release,
-providing to have the downstream compartment that iodine is removed resin, this iodine is removed resin and discharge chlorine in the iodine scavenging process,
-use the chlorine that discharges from this resin that trivalent arsenic is oxidized to pentavalent arsenic,
-randomly, use gac to provide chlorine to remove,
-provide to have the other compartment that arsenic is removed resin or medium, from water, remove arsenic by this arsenic removal resin or medium thus,
-randomly, use gac to provide iodine to remove, gac can be born Ag-bearing.
Preferably set the unitary size of the present invention, thereby become the portable filter unit, its especially have mouthpiece and as
The size of product.Yet other size also is fine.In addition, as in family's filter unit, this unit can be furnished with pipeline and be connected and replace mouthpiece with appropriate to be used to control current.
In different embodiments, can use unit of the present invention as the parts in the water bag, wherein extract water from water bag units by the present invention.This extraction can be by from water bag sucking-off water initiatively, and water bag is exerted pressure and taken place, and maybe this extraction can take place via gravity, and this is a kind of Katadyn that is made by the KatadynProdukte AGT of Switzerland Co., Ltd
And Katadyn
The product known principle.
The extra sterilization or the tools for purification that can be incorporated in the unit of the present invention are ultraviolet (UV) lamp, and this for example is disclosed among the U.S. Patent application No.2005/258108.Except the measure of above-mentioned sterilization or purified water, can additionally use this lamp.For example, in the unit, can use UV LED (photodiode) lamp to carry out disinfection under the insufficient situation of contained chemical substance.Therefore, even the inner chemical substance in unit is less, even when pollutent surpasses the pollution level of expection suddenly, still can work satisfactorily in this unit.
The ON/OFF program of UV LED needs some to be used to measure the measure of actual pollution level or the measure that pollutent is not all removed in prompting.Latter's available electron circuit is implemented, and depends on pollutent by the conduction of this circuit.At this moment, must consider owing to the sanitising agent that discharges is present in ionic amount in the water.Yet, after the GAC section, think that water should be cleaned and high conduction in water shows that cleaning is unsatisfactory.
Electronic circuit in the unit for example at outlet side, can be used to also to represent that cleaning method is whether satisfactory in the prescribed level on general basis.For example, can use little electronic circuit and series of cells or solar cell to make lamp shinny or make the function (for example when chemical substance exhaust) of telltale color change to demonstrate omission.
Description of drawings
Be described in more detail the present invention with reference to the accompanying drawings, wherein
Fig. 1 represents first embodiment of the present invention,
Fig. 2 represents second embodiment of the present invention,
Fig. 3 represents LifeStraw
Be provided with,
Fig. 4 represents to be applicable to LifeStraw
The rough schematic view of the embodiment that is provided with.
Detailed description/preferred embodiment
Fig. 1 shows unitary first embodiment of the present invention.Unit 1 has the water inlet 2 that the contaminated water flow 3 that is used to contain As enters and is used to flow out the water out 4 of the no arsenic water 5 of cleaning.Unit 1 comprises first compartment 6, wherein has iodine release resin and is used to discharge iodine, and this is with arrow 11 expressions.Iodine is mainly used to killing microorganisms.The water that contains iodine flows into the iodine that has in downstream and removes in the compartment 7 of resin, wherein removes iodine, shown in the stopping of arrow 11, and discharges chlorine, and is as shown in arrow 12.From the chlorine of compartment 7 with trivalent arsenic As (+III) be oxidized to pentavalent arsenic As (+V), make that (+III) amount reduces trivalent arsenic As gradually, and this is with arrow 9 expressions.Pentavalent arsenic As (+V) to remove resin to remove by the arsenic in the compartment 8, this is with arrow 10 expressions.
Unit among Fig. 1 can be used for the water cleaning and arsenic is removed, and replenishes so that its function optimization although Fig. 1 only shows available other measure of ultimate principle.
Fig. 2 shows improved system.For example, unit 1 can additionally have chlorine removal compartment 13.Resin in compartment 13 can be the optionally supported granular carbon (GAC) that silver is arranged.This compartment also can be removed remaining iodine.In order to make iodine enough act on microorganism longways to reach effect completely, can between iodine resin 6 and iodine scavenging agent 7, provide void space 14, the size of void space 14 is adjusted with the predetermined required reaction times with respect to current.
In addition, can be that mechanical filter 15 is to filter out bigger particle or microorganism after the water inlet 2.For example, this mechanical filter can be fabric filter to remove size more than or equal to 6 microns, is preferably greater than or equals 15 microns particle or microorganism, for example exists
Used in the product.In Fig. 2, also show mouthpiece 16 as water out.
Shown among Fig. 3
The structure of product can use the 3rd design for the present invention, chooses wantonly to have little modification, as removing the length that function increases owing to adding arsenic.At present on the market
Setting as shown in fig. 1, comprise mouthpiece 22, it has removable end cap 21, also is included in another end cap 33 of covering inlet folder 3 of the end opposite of tubular body arranged inside 26.Thin polypropylene or polyester filter 15 cover water inlet, wherein just have thick polypropylene filter 28 before the compartment of filling iodine release resin 29.Another filter deployment 28,24 of being furnished with polypropylene fibre filter screen 27 is arranged after the iodine compartment.What separated by void space 20 is the compartment 25 that contains GAC.
The GAC compartment that originally contains that is provided with is substituted by many compartment stage 25 according to the present invention, and it also can change illustrated dimension.With reference to figure 4 overview, show and be applicable to
The setting that is provided with, these many compartment stage 25 contain strong base ion exchange resin 25a, wash-out chlorine between the iodine adsorption cycle; For arsenic adsorbent medium compartment 25c, being strong basic type anion-exchange resin compartment 25d afterwards then, is GAC compartment 25e then, and wherein GAC can bear Ag-bearing.Randomly, the downstream of strong base ion exchange resin 25a be the compartment 25b that contains GAC with resin to the situation of chlorine sensitivity under at chlorine protection arsenic adsorbent medium 25c.Compartment 25a, 25b, 25c, 25d, 25e are separated to avoid mixed with resin by thick polypropylene filter.
Depend on required effect in some cases, aforesaid interstice coverage can place chlorine to discharge after the resin.
Claims (40)
1. one kind has a plurality of compartments so that water flows through the water purification unit of these compartments successively, and this unit comprises:
-have a compartment that the iodine that is used for killing the water microorganism discharges resin,
-having the downstream compartment of iodine scavenging agent, the iodine scavenging agent is set to discharge chlorine in the iodine scavenging process, and the amount of the chlorine of release is set to trivalent arsenic is oxidized to pentavalent arsenic,
-other the downstream compartment with arsenic removal resin, arsenic is removed resin and be set to remove arsenic from water.
2. according to the water purification unit of claim 1, wherein said iodine scavenger resin is strong ion exchange resin.
3. according to the water purification unit of claim 2, wherein said iodine scavenger resin is a strong basic type anion-exchange resin.
4. according to the water purification unit of claim 3, wherein said strong basic type anion-exchange resin load has dichloroisocyanuric acid salt.
5. according to the water purification unit of claim 4, wherein said arsenic is removed resin and is comprised activated alumina.
6. according to each water purification unit among the claim 3-5, wherein said strong basic type anion-exchange resin or arsenic are removed resin and are comprised ferric oxide.
7. according to the water purification unit of claim 6, wherein said arsenic is removed resin and is comprised commercial resins AD33R or AD33L or AAFS50, or the combination of these resins.
8. according to each water purification unit in the aforementioned claim, wherein provide void space having between iodine compartment that discharges resin and the compartment with iodine removing resin, the volume of this void space is set to be used for prolonging substantially the reaction times between iodine and the water pollutant.
9. water purification unit according to Claim 8, to discharge the volume of compartment of resin suitable with having iodine for the volume of wherein said void space.
10. according to each water purification unit in the aforementioned claim, wherein provide compartment to be used to remove iodine with gac.
11. according to the water purification unit of claim 10, the wherein said activated carbon supported silver that has.
12. according to the water purification unit of claim 10 or 11, wherein said compartment with gac is removed resin at described iodine downstream.
13. according to the water purification unit of claim 10 or 11, wherein said gac mixes with described iodine scavenger resin.
14. according to each water purification unit among the claim 10-13, wherein said gac is positioned at the upstream that arsenic is removed compartment.
15. according to each water purification unit in the aforementioned claim, wherein this unit comprises the compartment that contains gel-type or macroporous type strong basic type anion-exchange resin.
16. according to each water purification unit in the aforementioned claim, wherein this unit is a portable unit.
17. according to the water purification unit of claim 16, wherein this unit is a tubulose.
18. according to the water purification unit of claim 17, wherein this unit has the length less than 40cm.
19. according to the water purification unit of claim 18, wherein this unit has the length less than 35cm.
20. according to each water purification unit among the claim 16-19, wherein this unit has the diameter less than 50mm.
21. according to the water purification unit of claim 20, wherein this unit has the diameter less than 40mm.
22. according to each water purification unit among the claim 16-20, wherein this unit has mouthpiece, is used to draw water by this unit.
23. according to each water purification unit in the aforementioned claim, amount and efficient that wherein said iodine discharges resin are set to discharge a certain amount of iodine in water, the amount of described iodine scavenger resin and efficient depend on to be waited to be discharged into a certain amount of chlorine in the water and is provided with, and described a certain amount of chlorine is arranged in use in arsenic content in the water when being the magnitude of paramount 2000ppb with the trivalent arsenic oxidation of real mass.
24. according to the water purification unit of claim 23, the trivalent arsenic of wherein said real mass is for surpassing 50%.
25. according to the water purification unit of claim 24, the trivalent arsenic of wherein said real mass is for surpassing 99%.
26. according to the water purification unit of claim 25, the trivalent arsenic of wherein said real mass is for surpassing 99.9%.
27. according to the water purification unit of claim 23, the trivalent arsenic of wherein said real mass is all arsenic that exceed maximum 10ppb.
28. according to each water purification unit in the aforementioned claim, the amount that wherein said iodine discharges resin is the 5-30% of this unit internal volume.
29. according to each water purification unit in the aforementioned claim, the amount that wherein said iodine discharges resin be the 10-25% of this unit internal volume, preferably 15-25%.
30. according to each water purification unit in the aforementioned claim, the amount of wherein said iodine scavenger resin is the 5-50% of this unit internal volume, preferred 5-40%.
31. according to each water purification unit in the aforementioned claim, the amount of wherein said iodine scavenger resin is the 10-40% of this unit internal volume, preferred 20-30%.
32. according to each water purification unit in the aforementioned claim, the amount that wherein said arsenic is removed resin be the 5-80% of this unit internal volume, preferably 5-50%.
33. according to each water purification unit in the aforementioned claim, wherein provide to have to be used for the compartment that the gac that chlorine removes was removed and be used for to iodine, the total amount of gac is the 5-50% of this unit internal volume.
34. according to the water purification unit of claim 33, wherein the total amount of gac is the 10-40% of this unit internal volume, preferred 20-40%.
35. according to each water purification unit in the aforementioned claim, wherein this unit is the portable unit with mouthpiece, described mouthpiece is used for water is drawn by this unit, this unitary length is less than 40cm, diameter is less than 50mm, and the amount that iodine discharges resin is the 5-50% of this unit internal volume, and the amount of iodine scavenger resin is the 5-50% of this unit internal volume, the amount that arsenic is removed resin is the 5-80% of this unit internal volume, preferred 5-50%.
36. water purification unit according to claim 35, wherein this unitary length is about 31cm, optional about 25cm, diameter is about 30mm, the amount that iodine discharges resin is the 10-30% of this unit internal volume, the iodine scavenger resin is that strong basic type anion-exchange resin and its volume are the 10-30% of this unit internal volume, it is AD33 or AAFS50 or based on the medium of the oxide compound of titanium or manganese or zirconium or other heavy metals or its mixture and its volume 5-80% for this unit internal volume, preferred 5-50% that arsenic is removed resin.
37. according to the water purification unit of claim 36 or 37, wherein provide the compartment with the gac that is used for the iodine removal, the amount of gac is the 5-50% of this unit internal volume.
38. according to the water purification unit of claim 38, wherein the amount of gac is the 20-40% of this unit internal volume.
39. according to the water purification unit of claim 38 or 39, the wherein said activated carbon supported silver that has.
40. a water purification method, this method comprise the current of setting up by many order compartments,
-provide to have iodine and discharge the compartment of resin and kill microorganism in the water with the iodine of release,
-providing to have the downstream compartment that iodine is removed resin, iodine is removed resin and discharge chlorine in the iodine scavenging process,
-use the chlorine that discharges from this resin that trivalent arsenic is oxidized to pentavalent arsenic,
-the other downstream compartment that arsenic is removed resin that has is provided, and remove resin by this arsenic and from water, remove arsenic.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK2006/000477 | 2006-09-01 | ||
| PCT/DK2006/000477 WO2008025356A1 (en) | 2006-09-01 | 2006-09-01 | Water purification including arsenic removal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101522578A true CN101522578A (en) | 2009-09-02 |
Family
ID=37685964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007800368204A Pending CN101522578A (en) | 2006-09-01 | 2007-08-25 | Water purification including disinfection, oxidation and arsenic removal |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101522578A (en) |
| TW (1) | TW200833616A (en) |
| WO (2) | WO2008025356A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MX2010011581A (en) | 2008-04-23 | 2010-12-14 | Water Security Corp | Improved halogenated resin beds. |
| BRPI0915883A2 (en) * | 2008-07-10 | 2015-11-03 | Water Security Corp | iodinated resin filter and filter life indicator |
| MX341036B (en) | 2009-12-07 | 2016-08-04 | Fresenius Medical Care Holdings Inc | Water purification cartridge using zirconium ion-exchange sorbents. |
| WO2011110173A1 (en) | 2010-03-08 | 2011-09-15 | Vestergaard Sa | Water purification device with overmolded valve member |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4190529A (en) * | 1975-03-28 | 1980-02-26 | Aqua-Chem, Inc. | Mixed-form polyhalide resins for disinfecting water |
| US4769143A (en) * | 1987-02-17 | 1988-09-06 | Or-Tsurim | Device for purifying water |
| US5456831A (en) * | 1993-05-24 | 1995-10-10 | Sullivan; John L. | Portable water filtering device |
| US6887379B2 (en) * | 2000-07-25 | 2005-05-03 | Beryl B. Schiltz | Multiple use water purification device |
| WO2006009473A1 (en) * | 2004-07-20 | 2006-01-26 | Russell Henry Kelly | A filtration system |
-
2006
- 2006-09-01 WO PCT/DK2006/000477 patent/WO2008025356A1/en active Application Filing
-
2007
- 2007-08-25 CN CNA2007800368204A patent/CN101522578A/en active Pending
- 2007-08-25 WO PCT/DK2007/000386 patent/WO2008025358A1/en active Application Filing
- 2007-08-29 TW TW96132091A patent/TW200833616A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008025356A1 (en) | 2008-03-06 |
| TW200833616A (en) | 2008-08-16 |
| WO2008025358A1 (en) | 2008-03-06 |
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