CN102046010A - Process and composition for purification of household water - Google Patents
Process and composition for purification of household water Download PDFInfo
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- CN102046010A CN102046010A CN2009801202794A CN200980120279A CN102046010A CN 102046010 A CN102046010 A CN 102046010A CN 2009801202794 A CN2009801202794 A CN 2009801202794A CN 200980120279 A CN200980120279 A CN 200980120279A CN 102046010 A CN102046010 A CN 102046010A
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- Prior art keywords
- water
- peracetic acid
- composition
- added
- hydrogen peroxide
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 189
- 238000000034 method Methods 0.000 title claims abstract description 81
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- 238000000746 purification Methods 0.000 title claims abstract description 23
- 230000008569 process Effects 0.000 title abstract description 12
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 claims abstract description 313
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 115
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 24
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- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 102000016938 Catalase Human genes 0.000 description 2
- 108010053835 Catalase Proteins 0.000 description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 241000588724 Escherichia coli Species 0.000 description 2
- 241000224466 Giardia Species 0.000 description 2
- 241000186781 Listeria Species 0.000 description 2
- 241000736262 Microbiota Species 0.000 description 2
- 241000607142 Salmonella Species 0.000 description 2
- 241000700605 Viruses Species 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000003115 biocidal effect Effects 0.000 description 2
- SXDBWCPKPHAZSM-UHFFFAOYSA-M bromate Inorganic materials [O-]Br(=O)=O SXDBWCPKPHAZSM-UHFFFAOYSA-M 0.000 description 2
- SXDBWCPKPHAZSM-UHFFFAOYSA-N bromic acid Chemical compound OBr(=O)=O SXDBWCPKPHAZSM-UHFFFAOYSA-N 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 235000011089 carbon dioxide Nutrition 0.000 description 2
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- 239000012141 concentrate Substances 0.000 description 2
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- 230000000249 desinfective effect Effects 0.000 description 2
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- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000000796 flavoring agent Substances 0.000 description 2
- 235000019634 flavors Nutrition 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 150000008282 halocarbons Chemical class 0.000 description 2
- 231100001261 hazardous Toxicity 0.000 description 2
- 239000003864 humus Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 125000002081 peroxide group Chemical group 0.000 description 2
- 238000000247 postprecipitation Methods 0.000 description 2
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- 241000251468 Actinopterygii Species 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- QDHHCQZDFGDHMP-UHFFFAOYSA-N Chloramine Chemical class ClN QDHHCQZDFGDHMP-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 206010011732 Cyst Diseases 0.000 description 1
- 241000194033 Enterococcus Species 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical group Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
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- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000003139 biocide Substances 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- RHDGNLCLDBVESU-UHFFFAOYSA-N but-3-en-4-olide Chemical compound O=C1CC=CO1 RHDGNLCLDBVESU-UHFFFAOYSA-N 0.000 description 1
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- 125000001309 chloro group Chemical group Cl* 0.000 description 1
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- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 208000031513 cyst Diseases 0.000 description 1
- 230000034994 death Effects 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
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- 150000004676 glycans Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 150000001261 hydroxy acids Chemical group 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910000358 iron sulfate Inorganic materials 0.000 description 1
- SUOFREPYJDSUTJ-UHFFFAOYSA-N iron sulfurous acid Chemical compound [Fe].S(O)(O)=O SUOFREPYJDSUTJ-UHFFFAOYSA-N 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 230000002147 killing effect Effects 0.000 description 1
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- 239000012286 potassium permanganate Substances 0.000 description 1
- 230000003389 potentiating effect Effects 0.000 description 1
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- 239000008213 purified water Substances 0.000 description 1
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- 239000013049 sediment Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 241000894007 species Species 0.000 description 1
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- 231100000419 toxicity Toxicity 0.000 description 1
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- 230000003442 weekly effect Effects 0.000 description 1
- 150000003752 zinc compounds Chemical class 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/16—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group; Thio analogues thereof
-
- 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
-
- 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
- C02F1/722—Oxidation by peroxides
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Physical Water Treatments (AREA)
Abstract
A composition for use in purification of household water, such as tap water, drinking water, or bottled water. The composition contains peracid, such as peracetic acid. The composition typically comprises peracetic acid, acetic acid, and hydrogen peroxide. Also a process for purification of household water. In the process, the composition is added to water, e.g., in a water tank, piping, or a drinking vessel. The process may also comprise sedimentation, filtration, or UV disinfection.
Description
Invention field
The civil water of this paper refers to all plans for the human water that uses, especially as the water of drinking water for human consumption.
At present, the use of civil water increases rapidly in the whole world, thereby its demand also increases rapidly in the whole world.Making great efforts from than the more unpurified water in the past, producing civil water and do not improve the cost of process for purifying greatly with chemicals still less.In addition, need to use the chemicals that biology is decomposable or other harm is less, and, can not form the chemicals that health is had the compound of adverse effect in addition.In addition, but making great efforts to find to have minimum energy flavour problems, can't be in water system, as producing the chemicals that destroys in water pipe, pond and the water tower.In bottled water, the problem that part is same, the problem that relates in particular to taste has limited the use of chemicals.Purifying unboiled water generally includes to generate drinking water: mechanical filter, common biological treatment and add water in the different step of process for purifying and purify with chemicals to strengthen purification and/or oxidation of organic compounds and inorganic matter and organism.
When unboiled water is sterilized with the generation civil water, form in water at impurity new during the process for purifying, if especially unboiled water contains suitable organic matter to form impurity, as humus.Usually, surface water (river and lake water) contains how such material than underground water.Yet along with the increase that civil water uses, underground water uses and is restricted, and the increase in demand that surface water, river and lake water are used.Unboiled water is pure more, and the impurity that produces owing to the use that purifies with chemicals is just few more.When civil water is sterilized in a usual manner, that is, by chlorination, along with chlorine and organic reaction, various chlorinated compounds form in water.The drinking water that comes from the chlorination of humic surface water may contain into hundred kinds of different chlorinated compounds.If contain bromide in the water, also can form brominated compound.
Usually, in daily water purification, chlorine and/or its derivative are utilized for water sterilization.Yet if solids content is very high, chlorine can't produce expected result as the use that water purifies with chemicals.For example, the formation of mutagen haloform and chlorination furanone is relevant with chlorination.These meetings under a cloud cause health risk, for example, and the risk of cancer of increase.The mutagen that drinking water contains are many more, and the risk of cancer is just big more.Mutagen chlorination drinking water has detected in many countries, and in these countries, unboiled water contains suitable organic matter.
As chemicals, chlorine is a kind of poisonous and potent oxidant, and harmful to environment.Chlorine/ammonium chloride is generally used for purifying civil water, and it is dangerous handling chlorine/ammonium chloride, the strong reaction of they and hydrogen for example again, and to bear the risk of blast.Chlorine/ammonium chloride contains liquid chlorine, and it can evaporate when pressure drops to normal pressure immediately, and this is chafe and eyes again conversely.When being inhaled into, ammonium chloride also is harmful to, because the evaporation rapidly of liquid chlorine.Be lower than under 9.6 ℃ the temperature, chlorine and water form crystalline hydrate, Here it is why the water of low temperature limited the decomposition of chlorine greatly.Another problem is caused by the purification efficiency of chlorine/ammonium chloride, and although chlorine has reduced the total amount of microorganism in the water, yet it does not eliminate all organisms in the water---for example, have been found that the Giardia parasite still remains in the civil water after chlorination.
The civil water sterilization method that also has other, for example ozonisation.Because its powerful oxidability, the use of ozone in the civil water sterilization increased.By using ozone, might reduce the use of chlorine, and reduce the formation of chlorination by product simultaneously.Although many advantages are arranged, ozone also has inferior position.Gaseous ozone is an active gases, so, consider employment security and Environmental security, it is careful that the use of ozone needs.When being inhaled into, ozone can make the ability of lung forfeiture work.Therefore and be not suitable for all purposes by ozone purification is being expensive aspect the equipment investment.If unboiled water contains bromide, the use of ozone just has problem.As the by product that purifies, the ozone oxidation bromide forms bromate, and bromate is carcinogenic cancer derivant.
When being used for the civil water sterilization, hydrogen peroxide is relatively cheap aspect investment, and is multi-functional.Hydrogen peroxide provides a large amount of dissolved oxygens rapidly, and has disinfective action in the place of needs.The skin covering of the surface of hydrogen peroxide destroying bacterium, damage its attachment point and digest the polysaccharide layer of its protectiveness.By catalytic action, the organic iron, organic copper and the organic zinc compound that are present in usually in the bacterium have promoted this effect.Be hit the most influence of input (shock dosing) hydrogen peroxide of bacterium, but virus and protozoa generally preserve from.Yet the use of hydrogen peroxide is subjected to the restriction of fast-developing catalase activity, thereby is subjected to the restriction of the resistive to hydrogen peroxide of microorganism.
Advantage of the present invention
The method according to this invention and composition provide the new method of water sterilization and/or purification to produce civil water, as running water, drinking water or bottled water.By the method according to this invention and composition, may reduce the usage amount of chlorine and/or ozone and/or hydrogen peroxide in some cases, and the amount of the chemicals that uses, especially those chemicals harmful to natural world.The hazardous compound that the method according to this invention and composition form can not reach some current water and purify the method for use and the degree of the hazardous compound that chemicals forms.In some cases, composition according to the present invention has purified water pipe.In the time of in being added into water, almost be tasteless colourless according to composition of the present invention.Do not follow serious health risk according to composition of the present invention, thereby be well suited for purifying drinking water, comprise bottled water.Composition according to the present invention is biological decomposable.
Invention is described
According to the present invention, the composition that is used to purify waste water contains peracetic acid.The present invention is based on peracetic acid and preferably hydrogen peroxide and the combined activity of acetate in drink water purifying.In the method according to the invention, peracetic acid or its solution be added in the water with oxidation and/or remove or in and the material that forming in organic matter and/or inorganic matter or the water.Peracetic acid is the unusual microbicide of oxidisability, and under certain conditions, peracetic acid more has oxidisability than chlorine and bromine.The disinfecting power of peracetic acid is based on organic matter, and as the quick oxidation of cell membrane and microbial enzyme, in view of the above, peracetic acid can enter cell, and it can't be survived.Microorganism and hydrogen peroxide enliven the transportation that metabolism helps peracetic acid in the cell.In cell, the vital amino acid of peracetic acid oxidation is so that the form of enzyme changes and loses its activity.Peracetic acid is the hydrogen peroxide derivative, and is multi-functional disinfectant; It acts on bacterium, yeast, conk, spore and virus rapidly.The mode of action is oxidation and fast, thereby microorganism does not have the resistance of too many time development to peracetic acid.Peracetic acid is biological decomposable material, and environmental sound almost, and, when diluted, its almost do not have smell, colourless and tasteless.It is safe in utilization, because its not chafe, eyes or breathing in the solution of dilution.Peracetic acid has the effect that reduces pH, and this is a reason that improves this agent of activity.It is 100% solvable, temperature independent in water, and it kills Giardia parasite and Escherichia coli (E.coli), salmonella and Listeria bacterium.
According to preferred implementation of the present invention, the composition that is used for purifying waste water contains the peracetic acid of 5 to 17% amounts by weight at the aqueous solution, is preferably the peracetic acid of 5 to 15% amounts by weight.This aqueous solution is relatively stable, thereby peracetic acid can be stored even for a long time.In addition, it is easy to transportation relatively and handles, because this very dilute aqueous and do not require the cask that use is made by special steel.
According to an embodiment of the invention, composition contains hydrogen peroxide.The peracetic acid of this liquid stable is the equilibrium products between peracetic acid, hydrogen peroxide, acetate and the water.In the process that produces peracetic acid, acetate obtains an extra oxygen molecule from hydrogen peroxide in hydroxy-acid group.As a result, peroxide group forms in acetate, and in peroxide group, extra oxygen molecule is positioned at activity site.Carry out the balanced reaction of product according to concentration equation.
The 3*[hydrogen peroxide] * [acetate]=[peracetic acid] * [water].
When reaching balance, it is stable that mixture keeps.In the composition of equilibrium mixture,, be 1.1 except the water peracetic acid has the highest steam pressure ... 1.2kPa (kPa), so it concentrates with evaporation of water in open space.By way of compensation, chemicals is diluted owing to slowly degrade.The catabolite of peracetic acid comprises hydrogen peroxide and acetate.Hydrogen peroxide further is converted into water and oxygen.
Usually known stabilizing agent can be used to slow down degradation reaction.Peracetic acid is also inhibited to the enzyme of decomposition of hydrogen peroxide.The hydrogen peroxide that adds makes balanced reaction move to peracetic acid, thereby has slowed down the degraded of peracetic acid.In addition, under some conditions, the time ratio peracetic acid that hydrogen peroxide is preserved is grown and is not decomposed, and as their synergy, peracetic acid is at first purified waste water with hydrogen peroxide, and hydrogen peroxide acts in water as preservative thereafter.Such composition can be particularly advantageous for purifying bottled water, and bottled water often is stored even the longer time, and in this case, the degraded of peracetic acid in bottle can cause some problems.
According to an embodiment of the invention, composition contains solid reagent, on it in conjunction with liquid reagent and optional gaseous reagent.Such composition is preferably solid.In conjunction with liquid reagent can comprise that for example: peracetic acid, acetate, hydrogen peroxide, water or any other are included in reagent in the composition.According to an embodiment of the invention, composition contains some other peracid rather than peracetic acid.In conjunction with the combination that can comprise chemical bond, absorption or any other type, wherein, at transportation and memory period, liquid and/or gas are retained in the solid reagent.According to the present invention, along with solid reagent is added to the water, liquid reagent is water-soluble.It is easy handling such composition, and the distribution of said composition is also easy because it and without any need for container or measure the amount of liquid.In addition, this solid composite is in emergency or do not use under the situation of water correction plant and can easily be used to purify waste water.
According to an embodiment of the invention, composition according to the present invention is the form of solid tablet.Therefore, it is very simple, direct in the water to throw in (dosing) composition according to the present invention, and professor easily.In addition, the tablet according to embodiment of the present invention stores easily, handles and transports.
In the method according to the invention, according to composition of the present invention, preferably peracetic acid is added in the water.Even the peracetic acid of 2mg/l (mg/litre) dosage also the most usually is enough to kill half microorganism that comprises in the water to be clean.The active peracetic acid of several times of heavy doses only, promptly 5 to 15mg/l, reduce the amount of 90 to 99.9% microorganism usually.In the method according to the invention, according to the impurity levels of initial water, the peracetic acid of q.s or the peracetic acid aqueous solution are added in the water.Peracetic acid and water reaction form equilibrium mixture, and it contains peracetic acid, water, hydrogen peroxide and acetate.The mixture of peracetic acid, hydrogen peroxide and acetate preferably arrives 1500ppm with about 0.15ppm (PPM), or more preferably is added into to the amount of 500ppm with 0.05ppm.Peracetic acid, hydrogen peroxide and acetate are the common industrial preparation and the chemicals of use, thereby this paper no longer goes through their preparation and processing.Peracetic acid is the chemicals of environmental sound.It decomposes rapidly and is poisonous unlike other microbicide.Because peracetic acid and organic impurities reaction, it has been degraded into hydrogen peroxide and acetum (acetum) in its environment for use.It is not in any a part of accumulation of the ecosystem or concentrate.Can form dangerous and carcinogenic catabolite based on the oxidisability microbicide of halogen, and bring corrosion risk.Peracetic acid brings littler corrosion risk and harm catabolite still less relatively.
According to an embodiment of the invention, the method for purifying waste water according to the present invention is used to purify bottled water.In bottled water, in long term storage, the preservation of water can go wrong.Other problem is, for example chlorine can not be used with enough concentration because the cl part in the bottle be evaporated in the air pocket (air pocket) of bottle, the user is exposed in the noxious odor when uncork.During using the method according to this invention, the peracetic acid and the hydrogen peroxide that remain in the bottle are preserved bottled water even longer time.In addition, owing to used the method according to this invention, bottled water is smelt tasteless without the smell problem of using chlorine to exist because peracetic acid and hydrogen peroxide almost are nothings.
According to an embodiment of the invention, the method according to this invention is used to purified tap water, according to an embodiment of the invention, peracetic acid can be used for any prior art method for purifying water and purify and use chemicals partially or even wholly to replace previously used water, or except that previously used water purification with being used for any prior art method for purifying water the chemicals; Previously used water purifies with chemicals particularly chlorine, ammonium chloride, ozone, clorox, ammonia and sulfurous acid iron.In addition, according to the present invention, the ultra-violet radiation that is used to purify waste water can be reduced by using peracetic acid.In addition, under the situation of using peracetic acid, the water purifying step of using before some can preferably be accelerated or even give no thought to.Such step can comprise, for example ozonisation, chlorination, filtration, active carbon filtration and disinfection by ultraviolet light.The use in water work (waterwork) of gaseous chlorine and ozone is than using the many of peracetic acid danger.The peracetic acid solution of 5 to 17% dilutions is preferably 5 to 15% by weight, comprises the risk class identical with hydrogen peroxide, and the annual consumption of hydrogen peroxide does not cause problem above 1,000,000 tons.Yet, as activating agent, to compare with peracetic acid, the amount of the hydrogen peroxide that needs almost is its 3 times and stops growth rapidly.In order to prevent long-term growth, to compare with peracetic acid, the amount of the hydrogen peroxide that needs almost is its hundred times.
According to an embodiment of the invention, the water purification commitment of composition according to the present invention before precipitation process or precipitation is added into, so that organic amount is with the carrying out and few as much as possible of method in the water, thereby the amount of impurity can be lacked a lot.Consequently purer, safer civil water.In this embodiment of the present invention, as far back as the starting stage, pathogene is just removed or most of the removing fully, and reagent all keeps its effect in whole technical process.In addition, optional UV (the ultraviolet ray)/sterilization of using in this technology middle and later periods makes the purification capacity recovery activity of peracetic acid, and therefore, it is very long that the time of peracetic acid effect becomes.Because it is just purer that in fact water begin from technology, almost just purer after peracetic acid has just added, thereby might quicken other step of technology.In other step of technology, for example, the time that is exposed to ozonisation can be shortened, and might use the lamp of lower wattage in UV/ sterilization, thus saved the time, energy and cost.The amount of chlorine/chloramines also can be reduced, and keeps the pure of water during through pipeline because they are mainly used in now at current.
According to an embodiment of the invention, composition according to the present invention is added into the amount of necessity, measures water purification simultaneously.As required, can be added in the water to be clean with endless according to composition of the present invention.The method according to this invention preferably comprises circulation, composition wherein according to the present invention is added in the water to be clean, its measured subsequently impurity, and composition more according to the present invention is added into wherein up to water through measuring enough pure and can forwarding next water purifying step to.According to another implementation of the invention, many points that are used to add according to composition of the present invention are aligned to water purification route in order, are arranging measurement point so that the amount that composition according to the present invention comes out with the information calculations that obtains based on previous measurement point is added between these points.Because peracetic acid, hydrogen peroxide and acetate all are water miscible fully, and because peracetic acid and hydrogen peroxide are consumed and change into water and acetate in purification method, according to the purity of initial water, might under each situation, add necessary amounts according to composition of the present invention.For example, the dissolubility of chlorine in water is limited, and in addition, still stays in the water because chlorine itself is not consumed, and when a large amount of use, taste, smell and health problem are also following.
According to an embodiment of the invention, this method comprises adding according to composition of the present invention, and halogen, as chlorine, or derivatives thereof for example ammonium chloride only just be added into behind the disinfection by ultraviolet light to guarantee keeping pure through water during the water system at it.
According to preferred implementation of the present invention, composition according to the present invention is used to replace the use of halogen before disinfection by ultraviolet light.In this way, halogen and derivative thereof can be used with very little amount, and the formation of carcinogenic halogenated hydrocarbon and taste, smell and the health problem relevant with chlorine can be minimized.
According to an embodiment of the invention, halogen and derivative thereof are not used to purify waste water.According to preferred implementation of the present invention, composition according to the present invention is used to replace fully the use of halogen, with the formation of avoiding carcinogenic halogenated hydrocarbon and taste, smell and the health problem relevant with chlorine.
According to an embodiment of the invention, ozone is not used to purify waste water.According to preferred implementation of the present invention, composition of the present invention is used to replace fully the use of ozone, so that expensive ozone devices is not required, and can avoid processing to poisonous, dangerous ozone in the water treatment plant.
According to an embodiment of the invention, peracetic acid is added in the water with 0.1 to 5mg/l amount, and hydrogen peroxide is added into 0.1 to 50mg/l amount.According to preferred implementation of the present invention, hydrogen peroxide is added in the water with 5 to 15mg/l amount.Especially under the situation that purifies bottled water, the method according to this invention is according to the impurity levels of initial water, peracetic acid is added into 0.1 to 5mg/l amount, and hydrogen peroxide is added into 0.1 to 50mg/l amount, preferred dosage is 5 to 15mg/l, and acetate is added into the amount of necessity.Most of peracetic acid just has been consumed when just having begun in input, and the degraded of peracetic acid thereafter slows down.Peracetic acid was halved within tens of minutes.Under smaller dose concentration, peracetic acid was halved in a few hours, and this has increased the term of validity of effect.5 to 10mg/l peracetic acid residual concentration satisfies enough action periods in 5 to 10 minutes.Usually, the peracetic acid residual concentration constitute dose concentration pact half.
If water is pure or almost pure, the residual concentration and the stability of peracetic acid are higher.The consumption rate hydrogen peroxide of peracetic acid is faster, because the ratio of residual chemicals is different with the initial peracetic acid of throwing in.In the pure water system, peracetic acid has reduced the pH value greatly.After dosage was depleted, acidity returns to normal level needed half an hour usually, but in water system slowly, may even need a few hours.The input of peracetic acid also has slight electric conductivity to increase effectiveness.
According to an embodiment of the invention, composition according to the present invention is added into the different piece or the water tower of water supply network.The effect that mucus forms thing is removed and eliminated to peracetic acid performance chemicals.In addition, it prevents that new mucus from forming the generation of thing.Peracetic acid prevention microbes is incorporated into the combination on the equipment and between the microorganism, and this has improved the quality of water.Water-soluble chemical goods, peracetic acid are penetrated into mucus and form in the space middle between the thing cell.Along with hydrogen peroxide and peracetic acid resolve into gaseous oxygen, formed minute bubbles, it can the disrupting biofilm structure.Along with cell membrane is damaged, under the situation that peracetic acid exists, it is more difficult that the combination of microorganism just becomes.Because the biomembrane degradation effect of peracetic acid according to the function of composition performance corrosion protection of the present invention, has been protected water pipe, water tower and pond.When being unlike in suitable concentration, it is corrosive like that.Fashionable when adding according to embodiment of the present invention, peracetic acid is added into the different piece of water supply network, to avoid the pollution again of peracetic acid degraded back water.
In an embodiment of the invention, solid or fluid composition are added into terminal use's pipeline and/or couple together with tap.Preferably,, composition according to the present invention might be joined in the water pipe of single resident family to improve the quality of water according to the present invention in the zone of running water mass change or in the place that is unsuitable for drinking.In addition, this embodiment of the present invention for example makes, from the river or other be equal to the environment water intaking and purifying make it suitable for drinking and need not throw huge fund and become possibility to the equipment of water treatment plant.
According to preferred implementation of the present invention, when from pipeline, fetching water, composition combination water tap according to the present invention is added into, so that peracid, the fast purification effect that is preferably peracetic acid makes water be able to be purified immediately and use, and simultaneously, work as peracid, be preferably the possibility of having avoided water to pollute again when peracetic acid decomposes.
According to the preferred embodiment of the present invention, composition according to the present invention is added in water drinking utensil or the water receptacle, so that peracid, the fast purification effect that is preferably peracetic acid makes water be able to be purified immediately and use.
According to an embodiment of the invention, composition according to the present invention is used to purify the artificial ground water.One the preferred implementation according to the present invention, composition according to the present invention are used to replace partly or fully chlorine and the use of derivative in purifying the artificial ground water thereof.According to an embodiment of the invention, by composition according to the present invention is joined in the water that generates the artificial ground water, composition according to the present invention is used to purify artificial ground water basin and/or grit.
In ensuing part, will be by being described in detail with reference to the attached drawings the present invention.
Fig. 1 has shown the typical method of purified tap water, and wherein water passes through, and for example ozone, ultraviolet light and chlorine are sterilized.The method according to this invention and composition are not limited to the purification method that this paper introduces, and on the contrary, by improving any known method for purifying water, can use according to composition of the present invention.In method for purifying water shown in Figure 1, the acidity of water is conditioned by means of lime (2) and limewash (3), and by in water, providing iron sulfate (4) to make the humus precipitation.At post precipitation, water is directed into horizontal sedimentation tank (horizontal sedimentation), and wherein most of sediment is deposited on the bottom of sedimentation basin, from it is directed into the sewage purification plant here.Post precipitation, before with ozone (5) sterilization, water filters through sand filter.After ozonisation, carbonic acid gas (1) in water, is improved the basicity of water by supply, and thereby reduces the corrosion that water causes in the water supply network.Water is carried out active carbon filtration and disinfection by ultraviolet light then.Behind the disinfection by ultraviolet light that serves as reserve (back-up) sterilisation step, the small amounts of chlorine of hypochlorous sodium (6) form and be supplied in the water with the ammonia (7) that forms chloramines with chloropexia.In last step, carbonic acid gas and limewash are added in the water and arrive expected value with the pH regulator with water.After water purified, it was pumped into water supply network.
Fig. 2 has shown the embodiment according to purification method of the present invention, and wherein peracetic acid was added in two steps; Precipitate (9) afterwards before and during filtering in prestage precipitation (8).In according to the method for the preferred embodiment for the present invention, when method began, peracetic acid was added into before precipitation so that organic amount can be with the proceeding and few as much as possible of method in the water, and the amount of impurity can be greatly reduced.Consequently more pure and mild safer civil water.Therefore, when beginning, pathogene just is eliminated, and continues the entire method process according to the effect of composition of the present invention.In addition, the UV/ sterilization makes the purification capacity recovery activity of peracetic acid, and therefore, the effect of peracetic acid continues very long.Because in fact water begin from this method, almost purer after peracetic acid just adds, thereby might quicken other step of this method.In other step of this method, for example, the time that is exposed to ozonisation can be shortened, and the lamp that in UV/ sterilization, might use lower wattage with save time, energy and cost.The amount of chlorine/chloramines also can be reduced.
In a method according to the present present invention, the prestage that peracetic acid is handled at unboiled water is preferably (8) and/or (9) are devoted in the water, arrives water supply plant as it.In this embodiment of the present invention, peracetic acid was thrown in before biology filtration, active carbon filtration and/or husky filtered water.Preferably, dosage is 0.05 to 5mg/l in throwing in continuously, more preferably 0.1 arrives 2mg/l, even more preferably 0.1 arrives 1mg/l.Because peracetic acid is thrown in the prestage of water treatment, water in early days the stage just be sterilized, preferably follow the improvement of taste and smell, and preferably follow the precipitation of iron and manganese.By purification method of the present invention, might be partly or preferably fully replace the adding of traditional inflation and/or iron and manganese/potassium permanganate.In addition, as far back as prestage or thereafter, eliminate most of microorganism by the effect of peracetic acid and strengthened in the method subsequently husky or effect that other biology filters, because in this case, the microbiota of filter can utilize dead biological substance.In addition, subsequently husky or other biology filters and preferably strengthens the effect of peracetic acid in the method, and makes still less that the peracetic acid of dosage can provide identical disinfecting power.Usually, dosage might be dropped to 1-5ppm from 1000ppm, be preferably and drop to 1-2ppm.Because the formation of harmful organochlorine compound, similar pre-sterilization can not advantageously be carried out by chlorine.
In this method of the present invention, in prestage with the water of peracetic acid sterilization with after husky or other biology filters and is filtered, preferably remove bigger organism.In addition, in this filtered, the amount of peracetic acid was preferably dropped to the about 1/100 of initial addition, preferably drops to 1/1000 of initial addition.Preferably, in this filtered, most of maximum sewage pathogene was filtered as cyst, ameba, parasite and protozoa.Preferably, the filter size to fit is to filter the major part of all organic materials.
In this method of the present invention, husky or other biology filters as machinery and biofilter running.The residual quantity of peracetic acid is reduced in filter, and residual acetate can be by the biomembrane of filter as nutrien utilization.The hydrogen peroxide that provides from peracetic acid or the hydrogen peroxide of adding have the effect of oxygen source.In prestage, peracetic acid is preferably only added with such concentration, promptly so that during husky or other biology filtration, peracetic acid and remaining concentration thereof are semilethal to normal biomembrane, but preferably pathogenic microorganisms is caused death, generally speaking, pathogenic microorganisms is more responsive to peracetic acid than normal iron and manganese precipitation microorganism and biomembrane.Husky or other biofilter of being discussed itself is a known procedures in removing iron and manganese.In other words, husky or other biofilter is the equipment that is pre-existing in that replenishes this process.Husky or other biofilter separately can be too coarse and can not remove microorganism, thereby they can be passed through.In this embodiment of the present invention, peracetic acid preferably before filtering or the prestage during filtering most of harmful microbe amount is dropped in the water to be enough to kill, yet lethality is enough little of to keep the biomembranous integrality of filter.Preferably, peracetic acid is added into 1 to 43% concentration by weight, more preferably is added into 5 to 17% concentration by weight.The dosage of peracetic acid can be conditioned, for example by measuring microbiota and/or peracetic acid when flowing into and/or the concentration of peracetic acid in the water during outflow filter, and by the result of feedback regulation dosage to obtain expecting.The present invention is based on regulating dosage; On the contrary, can regulate by any suitable method known in the method and technology.Therefore, in this embodiment of the present invention, by before biology filters, add peracetic acid with chemistry, machinery and biological aspect (aspect) combine.In this way, the effect of biology and/or mechanical filter and/or peracetic acid is improved.The precipitation chemicals that might preferably replace in addition, traditional iron and/or manganese in whole or in part by peracetic acid.
In addition might be in conjunction with normal chemical precipitation material, as aluminium, polymer and iron chemical substance in filtration.The use of iron chemical substance has strengthened the activity of peracetic acid and hydrogen peroxide.The Fenton method of Here it is so-called hydrogen peroxide.In addition, the iron chemical substance has been quickened the removing of peracetic acid residue.Preferably weekly the flushing by regular extensive backflow of filter cleaned, and preferably adds simultaneously and can remove biomembranous peracetic acid from filter.The growth that this has promoted the effect of filter and has stoped pathogenic microorganisms.
Known ultraviolet light once was used for water sterilization.Yet wearing out and getting rusty of light fixture retrained this method.In this embodiment of the present invention, peracetic acid is preferably thrown in the prestage aging with respect to light fixture, so that the cost of UV treatment reduces.UV treatment is not a key component of the present invention, and this method does not have it can move yet.In the input of peracetic acid of the present invention, the UV treatment that is pre-existing in can be used, and the UV treatment that perhaps can carry out (constructable) can substitute by throwing in peracetic acid.
Peracetic acid in time decomposes, and the peracetic acid residue dropped to aspiration level in time, perhaps according to the embodiment of the present invention, preferably partially or completely removes through sand filter by throwing in acetate residue and/or other residue that peracetic acid produces.Preferably, the content of peracetic acid in end product is less than 0.1mg/l.According to an embodiment of the invention, residue can be thrown in delay simultaneously at peracetic acid and enough directly be removed by carbon filter or carbon filtration the back.
In this method of the present invention, optional ozonisation step becomes preferably unnecessary.The effect of perhaps, ozonisation step can be improved by the residue of peracetic acid.Ozonisation has also reduced the peracetic acid residue and has quickened the reduction of concentration.The water that the method according to this invention produces can be bottled or be directed to water supply network.In an embodiment of the invention, chlorine is added in the water that said method purifies preventing and anyly may be retained in the water and/or be brought into the propagation that does not need microorganism in the water.In other words, chlorine is used as the preservative in the water in this embodiment of the present invention.Preferably; in this embodiment of the present invention; the chlorinity of throwing in purifies to compare with conventional water and is much smaller; because do not need again to water sterilization; and in the water organic content preferably with conventional water purify compare lower equally, and because the purposes of chlorine only be protection water rather than purify waste water or water sterilization.Preferably reduced health risk and improved the aroma and flavor of water according to the minimizing of the chlorinity of embodiment of the present invention.Reduced the formation of organochlorine compound in the water that the method according to this invention produces during chlorination than organic matters, many organochlorine compounds wherein may be carcinogenic or unwanted in others.
Fig. 3 has shown the comparison at the water catharsis of removing three kinds of common microorganisms of chlorine and peracetic acid.Form shows that in order to remove Listeria, staphylococcus and enterococcus from water, comparing with chlorine only needs a part of peracetic acid.Especially, for 5 degree water, this species diversity clearly.Usually, the temperature of underground water and the unboiled water that draws from river or lake is very low, in many places in the world even approach 5 degree.Therefore, compare with chlorine, few of the amount of the peracetic acid that needs have reduced the cost that transports chemicals more.Because in the time of in being released to environment, chlorine be than peracetic acid more dangerous reagent, use the environmental hazard of peracetic acid littler.In addition, when being used to purify waste water, peracetic acid is littler to people's harm than chlorine, and forms poisonous and/or carcinogenic residue still less in supply water.
Fig. 4 and Fig. 5 have shown salmonella and listerial effect in the peracetic acid removing water.Form shows, also is enough to almost remove fully these bacteriums in 30 seconds even be exposed to according to composition of the present invention from water.Because the quick effect of peracetic acid in water purifies might continuous monitoring purify the result and add more peracetic acid in needs.This provides a kind of more effective and purification method faster, provides cost savings and can produce better result, because during only the peracetic acid of optimum amount is used to throw in.
Because the catalatic ability of hydrogen peroxide is sheared in its opposing, peracetic acid is to the biocidal effect of the organism big order of magnitude of effect than hydrogen peroxide.The amount of the peracetic acid that uses in control of microorganisms is lacked than the amount of hydrogen peroxide, and this total environment effect that makes peracetic acid is more favourable than hydrogen peroxide.Since the small size increase of BOD (biochemical oxygen demand (BOD)) load, the long term environmental effect of peracetic acid be with acetate quite.
Aquatile is to peracetic acid than terrestrial organism responsive about 10 times.The acute toxicity of organism little than limnobios body in the salt solution.Peracetic acid to less organism or the embryo between the emergence period toxicity bigger.Harm to algae and fish is almost suitable, and the algae effect of the killing major part of peracetic acid is provided by hydrogen peroxide.For microorganism, peracetic acid has the function of kill livestock thing and biostability.
Peracetic acid can be resisted catalase, so it and special promptly biological decomposition the unlike hydrogen peroxide.Low concentration and biological half-life in the lasting several weeks that are in totally and close fully the peracetic acid in the closed system.The direct environment effect of peracetic acid and hydrogen peroxide quite.
By suitable dose mode, use that might peracetic acid is longer than other chemicals, because microorganism for it and be not easy adjusting.The input of peracetic acid can be continuous or regular.In order to reach more powerful effect, peracetic acid is impacted (in shock) and is thrown in.
Peracetic acid is faster than many other microbicide effects, so its use has reduced the clarification time.The concentration of sterilization is safe, and is non-stimulated to skin, and do not stay poisonous residue in product.Because water-soluble completely, peracetic acid does not produce precipitation, and is easy to wash.Peracetic acid does not spume or makes stainless steel produce corrosion.
Peracetic acid is highly resistant to most of microorganism---bacterium, fungi, spore and virus---and, because the quick effect of peracetic acid, can not be formed with the microbial strains of resistance.As the oxidisability microbicide, peracetic acid is compared with traditional common biocide, can resolve into innocuous substance quickly, and littler to environmental toxicity.When reacting with organic impurities, most of peracetic acid is the decomposition of morning as far as possible in environment for use.When fully being diluted or in degradation process, only remaining hydrogen peroxide of peracetic acid and acetate are as residue.
Fig. 6 has shown and has crossed acetum (peracetum) and the degraded of hydrogen peroxide in the airtight bottle function as the time.This figure shows that the hydrogen peroxide of the about 40mg/l of adding and the peracetic acid of 15mg/l cause balance after 10 hours in water, and it contains the peracetic acid of about 2mg/l and the hydrogen peroxide of 10mg/l.Even store the longer time, the amount of these compounds is enough to microbial growth in the prevention bottle ideally, and these microorganisms may survive and purify or be brought in the bottle.
Claims (22)
1. be used to purify the composition of civil water, it is characterized in that it contains peracid.
2. composition according to claim 1 is characterized in that it contains peracetic acid.
3. composition according to claim 1 and 2 is characterized in that described peracetic acid is 5 to 17% the aqueous solution by weight.
4. according to claim 1,2 or 3 described compositions, it is characterized in that it contains hydrogen peroxide.
5. according to any described composition in the claim 1 to 4, it is characterized in that it contains acetate.
6. according to any described composition in the claim 1 to 5, it is characterized in that it contains solid reagent, be combined with liquid reagent on it.
7. composition according to claim 6 is characterized in that it is a tablet form.
8. purify the method for civil water, it is characterized in that being added in the water according to any described composition in the claim 1 to 7.
9. method according to claim 8 is characterized in that described water is bottled.
10. method according to claim 8 is characterized in that described water is directed into water supply network.
11. any described method in 10 according to Claim 8, wherein said water precipitates when purifying beginning, it is characterized in that being added into during precipitating or before the precipitation according to any described composition in the claim 1 to 7.
12. any described method in 11 according to Claim 8, wherein said water is filtered, and it is characterized in that being added into during filtering or after filtering according to any described composition in the claim 1 to 7.
13. any described method in 12 is characterized in that being added into according to any described composition in the claim 1 to 7 of necessary amount according to Claim 8, measures described water purification simultaneously.
14. any described method in 13 according to Claim 8, wherein said water is sterilized through UV, it is characterized in that halogen and/or its derivative only are added in the method behind disinfection by ultraviolet light.
15. any described method in 14 is characterized in that halogen and/or its derivative are not used in described method according to Claim 8.
16. any described method in 15 is characterized in that ozone is not used in described method according to Claim 8.
17. any described method in 16 according to Claim 8 is characterized in that 0.1 to 5mg/l peracetic acid and 0.1 to 50mg/l hydrogen peroxide are added in the water.
18. any described method in 17 according to Claim 8 is characterized in that hydrogen peroxide is added into 5 to 15mg/l amount.
19. any described method in 18 according to Claim 8 is characterized in that being added into according to any described composition in the claim 1 to 6 different piece of described water supply network.
20. any described method in 19 is characterized in that being added in the pond according to any described composition in the claim 1 to 7 according to Claim 8.
21. any described method in 19 according to Claim 8 is characterized in that being added into terminal use's water pipe and/or being connected with tap according to any described composition in the claim 1 to 6.
22. any described method in 18 is characterized in that being added in water drinking utensil and/or the container according to any described composition in the claim 1 to 6 according to Claim 8.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20085364A FI20085364A0 (en) | 2008-04-24 | 2008-04-24 | Process and composition for purification of domestic water |
| FI20085364 | 2008-04-24 | ||
| PCT/FI2009/050329 WO2009130397A1 (en) | 2008-04-24 | 2009-04-24 | Process and composition for purification of household water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102046010A true CN102046010A (en) | 2011-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009801202794A Pending CN102046010A (en) | 2008-04-24 | 2009-04-24 | Process and composition for purification of household water |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP2282635A1 (en) |
| CN (1) | CN102046010A (en) |
| BR (1) | BRPI0911684A2 (en) |
| FI (1) | FI20085364A0 (en) |
| RU (1) | RU2010146302A (en) |
| WO (1) | WO2009130397A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI123332B (en) * | 2010-08-31 | 2013-02-28 | Pac Solution Oy | Water purification procedure |
| WO2014210472A1 (en) * | 2013-06-27 | 2014-12-31 | Peroxychem Llc | Wastewater treatment method |
| US20180065874A1 (en) * | 2016-09-02 | 2018-03-08 | Peroxychem Llc | Reduction of disinfection byproduct formation in drinking water |
| CN111792712A (en) * | 2020-08-11 | 2020-10-20 | 华侨大学 | Method for inactivating enterovirus in water and application |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5736057A (en) * | 1993-07-29 | 1998-04-07 | Promox S.R.L. | Process for the purifying of waters for human consumption |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19903649A1 (en) * | 1999-01-29 | 2000-08-10 | Degussa | Process for the production of drinking water |
| FR2880623B1 (en) * | 2005-01-11 | 2007-03-09 | Ceetal Sa Sa Lab | SOLID, DIVIDED, STABLE COMPOSITION COMPRISING PHMBG AND OXYGEN RELEASE FOR TREATING WATER |
| CA2672469C (en) * | 2006-12-22 | 2016-05-31 | Fmc Corporation | An improved peracetic acid composition |
-
2008
- 2008-04-24 FI FI20085364A patent/FI20085364A0/en not_active Application Discontinuation
-
2009
- 2009-04-24 EP EP09735017A patent/EP2282635A1/en not_active Withdrawn
- 2009-04-24 BR BRPI0911684-2A patent/BRPI0911684A2/en not_active IP Right Cessation
- 2009-04-24 WO PCT/FI2009/050329 patent/WO2009130397A1/en active Application Filing
- 2009-04-24 CN CN2009801202794A patent/CN102046010A/en active Pending
- 2009-04-24 RU RU2010146302/05A patent/RU2010146302A/en not_active Application Discontinuation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5736057A (en) * | 1993-07-29 | 1998-04-07 | Promox S.R.L. | Process for the purifying of waters for human consumption |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2282635A1 (en) | 2011-02-16 |
| WO2009130397A1 (en) | 2009-10-29 |
| BRPI0911684A2 (en) | 2015-07-28 |
| RU2010146302A (en) | 2012-05-27 |
| FI20085364A0 (en) | 2008-04-24 |
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