ZA200507503B - Chemical composition for the treatment of water - Google Patents
Chemical composition for the treatment of water Download PDFInfo
- Publication number
- ZA200507503B ZA200507503B ZA200507503A ZA200507503A ZA200507503B ZA 200507503 B ZA200507503 B ZA 200507503B ZA 200507503 A ZA200507503 A ZA 200507503A ZA 200507503 A ZA200507503 A ZA 200507503A ZA 200507503 B ZA200507503 B ZA 200507503B
- Authority
- ZA
- South Africa
- Prior art keywords
- composition
- mass
- water
- persulphate
- bisulphate
- Prior art date
Links
- 239000000203 mixture Substances 0.000 title claims description 68
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 47
- 239000000126 substance Substances 0.000 title claims description 23
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 12
- 229910052783 alkali metal Inorganic materials 0.000 claims description 12
- -1 alkali metal bicarbonates Chemical class 0.000 claims description 11
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 10
- 229960001484 edetic acid Drugs 0.000 claims description 10
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 claims description 9
- 239000004160 Ammonium persulphate Substances 0.000 claims description 8
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical group [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 8
- 239000001164 aluminium sulphate Substances 0.000 claims description 8
- 235000011128 aluminium sulphate Nutrition 0.000 claims description 8
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 8
- 235000019395 ammonium persulphate Nutrition 0.000 claims description 8
- BUACSMWVFUNQET-UHFFFAOYSA-H dialuminum;trisulfate;hydrate Chemical compound O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O BUACSMWVFUNQET-UHFFFAOYSA-H 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical group [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 7
- 239000001110 calcium chloride Substances 0.000 claims description 7
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 7
- WBHQBSYUUJJSRZ-UHFFFAOYSA-M sodium bisulfate Chemical compound [Na+].OS([O-])(=O)=O WBHQBSYUUJJSRZ-UHFFFAOYSA-M 0.000 claims description 7
- 229910001617 alkaline earth metal chloride Inorganic materials 0.000 claims description 6
- 235000019270 ammonium chloride Nutrition 0.000 claims description 6
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 6
- 239000004159 Potassium persulphate Substances 0.000 claims description 5
- QAOWNCQODCNURD-UHFFFAOYSA-M bisulphate group Chemical group S([O-])(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-M 0.000 claims description 5
- STNGULMWFPMOCE-UHFFFAOYSA-N ethyl 4-butyl-3,5-dimethyl-1h-pyrrole-2-carboxylate Chemical compound CCCCC1=C(C)NC(C(=O)OCC)=C1C STNGULMWFPMOCE-UHFFFAOYSA-N 0.000 claims description 5
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 5
- 235000019394 potassium persulphate Nutrition 0.000 claims description 5
- BIGPRXCJEDHCLP-UHFFFAOYSA-N ammonium bisulfate Chemical compound [NH4+].OS([O-])(=O)=O BIGPRXCJEDHCLP-UHFFFAOYSA-N 0.000 claims description 4
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 4
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 claims description 3
- 229910021538 borax Inorganic materials 0.000 claims description 3
- 239000004328 sodium tetraborate Substances 0.000 claims description 3
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910001510 metal chloride Inorganic materials 0.000 claims description 2
- CHKVPAROMQMJNQ-UHFFFAOYSA-M potassium bisulfate Chemical compound [K+].OS([O-])(=O)=O CHKVPAROMQMJNQ-UHFFFAOYSA-M 0.000 claims description 2
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Chemical compound [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 8
- 239000000460 chlorine Substances 0.000 description 8
- 229910052801 chlorine Inorganic materials 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 6
- 241000894006 Bacteria Species 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- UQGFMSUEHSUPRD-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound [Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 UQGFMSUEHSUPRD-UHFFFAOYSA-N 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 231100000683 possible toxicity Toxicity 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
- C02F1/683—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water by addition of complex-forming compounds
-
- 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
- C02F2101/20—Heavy metals or heavy metal 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
- C02F2103/42—Nature of the water, waste water, sewage or sludge to be treated from bathing facilities, e.g. swimming pools
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Description
oT WO 2004/074183 PCT/1B2004/000391
CHEMICAL COMPOSITION FOR THE TREATMENT OF WATER
THIS INVENTION relates to the treatment of water. The invention relates particularly to a chemical composition for the treatment of water to enhance the purity thereof, for example, to a level suitable for human consumption. The invention also relates to a method of treating water to enhance the purity thereof.
In order to be suitable for human consumption water should be bacteria-free, odour-free, tasteless and clear and should optimally have a pH of between 7.6 and 8.3.
The treatment of water for human consumption purposes with chlorine- releasing agents, is known. The chlorination of water for human consumption has been found to have a number of disadvantages including that chlorinated water has an unpleasant taste and smell. Further, when phenols are present in raw water which is chlorinated, the phenols can react with the chlorine, producing a compound known as trichloropheno! which produces a very unpleasant taste. A further disadvantage of chlorine-releasing agents for the treatment of water is that the chlarine-releasing agents merely kill off bacteria but do not clean the water Wy precipitating dissolved suspended matter in the water.
It is an object of the present invention to provide a non-toxic and odourless chemical composition for use in treating water to enhance the purity thereof, for example for human consumption, which obviates the need for the use of chlorine-releasing agents.
SUBSTITUTE SHEET (RULE 26)
Lo WO 2004/074183 PCT/IB2004/000391
According to the invention there is provided a chemical composition for the treatment of water to enhance the purity thereof, for example, to a level suitable for human consumption, the chemical composition comprising a mixture including: 35 — 60% by mass of a persulphate selected from the group consisting of the alkali metal persulphates, ammonium persulphate and mixtures thereof; 15 — 30% by mass of a bisulphate selected from the group consisting of the alkali metal bisulphates, ammonium bisulphate and mixtures thereof; 5 — 20% by mass of a metal chloride selected from the group consisting of the alkaline earth metal chlorides and mixtures thereof; 2 — 5% by mass of aluminium sulphate; and 1 — 3% by mass of copper sulphate.
The Applicant envisages that a dosage of between 25mg and 100mg per litre of water will be required to purify water to a level suitable for human consumption, depending on the level of contamination of the water. For example, 50mg of the chemical composition per litre of water would typically be sufficient to purify contaminated reservoir water; however, river water may typically require 50mg to 100mg of the chemical composition per litre of water to purify the water to a level suitable for human consumption.
The persulphate may be selected from the group consisting of potassium persulphate, sodium persulphate, ammonium persulphate and mixtures thereof.
The bisulphate in tum may be selected from the group consisting of potassium bisulphate, sodium bisulphate, ammonium bisulphate and mixtures thereof.
Preferably the Applicant envisages that the alkali metal bisulphate may be sodium bisulphate.
The chemical composition may include 0.5 — 10% by mass of sodium tetraborate pentahydrate, preferably 1 — 4%. The alkaline earth metal chloride may be calcium chloride.
The chemical composition may include 0.5 — 6% by mass of a metal bicarbonate selected from the group consisting of the alkali metal bicarbonates and mixtures thereof. Conveniently the alkali metal bicarbonate is sodium bicarbonate.
In one embodiment of the chemical composition, the chemical composition may include 5 — 10% by mass of ammonium chloride. In another embodiment of the chemical composition, the ammonium chloride may be replaced with 5 - 10% by mass of ammonium persulphate, provided that the ammonium persulphate and any alkali metal persulphates in the composition together form at most 60% by mass of the composition.
The chemical composition may include 0.5 — 3% by mass ethylene diamine tetra-acetic acid (EDTA) which complexes heavy metals in water to be treated.
In various prefered compositions according to the present invention, independently of one another, the persulphate content may be 40 — 60% by mass; the bisulphate content may be 20 — 30% by mass; the alkaline earth metal chloride content may be 8 — 15% by mass; the aluminium sulphate content may be 2 — 4% by mass; the sodium tetraborate pentrahydrate content may be 1 — 4% by mass; the alkali metal bicarbonate content may be 3 — 6% by mass; and/or the ethylene diamine tetra-acetic acid content may be 1 — 3% by mass.
Without being bound by theory, the Applicant believes that, in use, the copper sulphate has a bacteriocidal action; that the aluminium sulphate serves as a flocculant to precipitate suspended solids in water to be treated and thus cleans the water, that water which is purified with the chemical composition in accordance with the invention will initially become acidic due to the presence of the sodium bisulphate; that the initially acidic pH of the water accelerates the reaction time of the persulphate with the calcium chloride and with any ammonium chloride present to produce a sanitizer; that the composition also creates an acidic environment which allows the persulphate to work at optimum efficacy; that any sodium tetraborate pentahydrate present promotes a pH of approximately 9 while any bicarbonate present promotes a pH of approximately 8.3, and the persulphate promotes a pH of approximately 5; that any sodium tetraborate compound pentahydrate present acts as a mild disinfectant which can combine with persulphate compound and chloride ions present to generate a stable sanitizer; that the EDTA when present can complex any heavy metals present in the water to be purified, to protect the persulphate compound, thereby allowing the persulphate compound to remain active for longer, thus prolonging the generation of the sanitizer. In the case of chlorine-releasing agents, the active life of hypochlorous acid is approximately three hours in sunlight, whereas, also without being bound by theory, the sanitizer of the present invention is believed to be generated in an ongoing reaction between the persulphate compound and the chloride ions present which can last much longer , with the benefit that, should bacteria be re-introduced to the water, the sanitizer can still be active and kill off the newly introduced bacteria: and the further benefit that, with the prolonged generation of the sanitizer, a better kill rate of bacteria is achieved when compared to chlorine-releasing agents which can only be introduced at certain specific concentrations, namely by 3 — 5mg/f, owing to the potential toxicity of chlorine and of the by-products generated by chlorine. In the case of chlorine this may not be enough to kill excessive amounts of bacteria within the three-hour active period of hypochlorous acid.
The invention extends to a method of treating water to enhance the purity thereof, the method comprising the step of admixing, with raw water to be treated, a composition as described and defined above.
The admixing of the composition which the water may be at a dosage rate of 25 - 100mg composition/t water, preferably at a dosage rate of 50-100mg composition/t water.
The invention is further described hereinafter by way of non-limiting example, with reference to the following examples 1 — 3:
Example 1
A chemical composition for the treatment of water to enhance the purity thereof to a level suitable for hum consumption, in accordance with the invention, comprises a mixture of the following compounds in the following proportions, by mass:
Potassium persulphate 48%
Sodium bisulphate 26%
Ammonium chloride 6%
Calcium chloride 8%
Aluminium sulphate 4%
Sodium tetraborate pentahydrate 1%
Copper sulphate 2%
EDTA 1%
Example 2
A further chemical composition for the treatment of water to enhance the purity thereof to a level suitable for human consumption, in accordance with the invention, comprises a mixture of the following compounds in the following proportions, by mass:
Potassium persulphate 40%
Sodium bisulphate 25%
Ammonium persulphate 8%
Calcium chloride 15%
Aluminium sulphate 4%
Sodium tetraborate pentahydrate 1%
Copper sulphate 2%
Sodium bicarbonate 4%
EDTA 1%
In Example 2, ammonium persulphate is included in the chemical composition and replaces the ammonium chloride in the mixture of Example 1. As a result, the amount of calcium chloride is increased to maintain the level of chloride ions which are introduced into water to be treated, in use.
Example 3
A still further chemical composition for the treatment of water to enhance the purity thereof in accordance with the present invention comprises a mixture of the following compounds in the following proportions, by mass:
Potassium persulphate 48%
Sodium bisulphate 24%
Calcium chloride 15%
Aluminium sulphate 4%
Sodium bicarbonate 5%
Copper sulphate 2%
EDTA 2%
The constituent ingredients of the chemical composition and the relative amounts thereof, have been selected to treat water while promoting pH levels for desirable efficacy of the ingredients so that water treated with the chemical composition is as far as possible suitable for human consumption.
Claims (20)
1. A chemical composition for the treatment of water to enhance the purity thereof, the chemical composition comprising a mixture including: 35 — 60% by mass of a persulphate selected from the group consisting of the alkali metal persulphates, ammonium persulphate and mixtures thereof; 15 — 30% by mass of a bisulphate selected from the group consisting of the alkali metal bisulphates, ammonium bisulphate and mixtures thereof; — 20% by mass of a metal chloride selected from the group consisting of the alkaline earth metal chlorides and mixtures thereof; 2 5% by mass of aluminium sulphate; and 1 — 3% by mass of copper sulphate.
2. A composition as claimed in Claim 1, in which the persulphate is selected from the group consisting of potassium persulphate, sodium persulphate, ammonium persulphate and mixtures thereof.
3. A composition as claimed in Claim 1 or Claim 2, in which the bisulphate is selected from the group consisting of potassium bisulphate, sodium bisulphate, ammonium bisulphate and mixtures thereof.
4. A composition as claimed in any one of Claims 1 — 3 inclusive, which includes 0.5 — 10% by mass of sodium tetraborate pentahydrate.
5. A composition as claimed in any one of the preceding claims, in which the alkaline earth metal chloride is calcium chloride.
6. A composition as claimed in any one of the preceding claims, which includes 0.5 — 6% by mass of a metal bicarbonate selected from the group consisting of the alkali metal bicarbonates and mixtures thereof.
7. A composition as claimed in Claim 6, in which the alkali metal bicarbonate is sodium bicarbonate.
8. A composition as claimed in any one of the preceding claims, which includes 5 — 10% by mass of ammonium chloride.
9. A composition as claimed in any one of the preceding claims, which includes 0.5 — 3% by mass of ethylene diamine tetra-acetic acid (EDTA).
10. A composition as claimed in any one of the preceding claims, in which the persulphate content is 40 — 60% by mass.
11. A composition as claimed in any one of the preceding claims, in which the alkaline earth metal chloride content is 8 — 15% by mass.
12. A composition as claimed in any one of the preceding claims, in which the aluminium sulphate content is 2 — 4% by mass.
. | WO 2004/074183 PCT/IB2004/000391
13. A composition as claimed in Claim 4, in which the sodium tetraborate persulphate content is 1 — 4% by mass.
14. A composition as claimed in claim 6 or Claim 7, in which the alkali metal bicarbonate content is 3 — 6% by mass.
15. A composition as claimed in claim 9, in which the ethylene diamine tetra-acetic acid content is 1 — 3% by mass.
"16. A composition as claimed in claim 1, substantially as described herein with reference to the Examples.
17. A method of treating water to enhance the purity thereof, the method comprising the step of admixing, with raw water to be treated, a composition as claimed in any one of Claims 1 — 16 inclusive.
18. A method as claimed in claim 17, in which the admixing of the composition with the water is at a dosage rate of 25 — 100mg composition/ £ water.
19. A method as claimed in claim 18, in which the dosage rate is 50 — 100mg composition/ { water.
20. A method as claimed in claim 17, substantially as described herein with reference to the Examples.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA200507503A ZA200507503B (en) | 2003-02-18 | 2005-09-16 | Chemical composition for the treatment of water |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA200301314 | 2003-02-18 | ||
| ZA200507503A ZA200507503B (en) | 2003-02-18 | 2005-09-16 | Chemical composition for the treatment of water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA200507503B true ZA200507503B (en) | 2007-01-31 |
Family
ID=32909110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA200507503A ZA200507503B (en) | 2003-02-18 | 2005-09-16 | Chemical composition for the treatment of water |
Country Status (2)
| Country | Link |
|---|---|
| WO (1) | WO2004074183A2 (en) |
| ZA (1) | ZA200507503B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7722841B2 (en) | 2006-04-25 | 2010-05-25 | General Electric Company | Polymeric chelant and coagulant to treat metal-containing wastewater |
| WO2008065631A1 (en) * | 2006-11-30 | 2008-06-05 | Joanne Raphael Katz | Method and composition for treating water |
| ES2333832B1 (en) * | 2008-08-26 | 2010-12-29 | Distribuidora Pool Magic 2004, S.L. | COMPOSITION ALGUICIDE FLOCULANTE. |
| CN105540774A (en) * | 2016-01-27 | 2016-05-04 | 张锐 | Sewage treatment purifying agent and preparation method for same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994024054A1 (en) * | 1993-04-22 | 1994-10-27 | Fmc Corporation | Method for treating water using an organic sanitizer and a persulfate |
| GB2305426B (en) * | 1995-09-21 | 1999-09-22 | Peter Glen Cox | The purification of water |
| US5700377A (en) * | 1996-06-18 | 1997-12-23 | Cox; Peter Glen | Purification of water |
| US6149821A (en) * | 1998-05-15 | 2000-11-21 | Advanced Water Technology, Inc. | Balanced water purification system |
-
2004
- 2004-02-17 WO PCT/IB2004/000391 patent/WO2004074183A2/en active Application Filing
-
2005
- 2005-09-16 ZA ZA200507503A patent/ZA200507503B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2004074183A3 (en) | 2007-11-01 |
| WO2004074183A2 (en) | 2004-09-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU745200B2 (en) | Method of water purification with oxides of chlorine | |
| JP4317762B2 (en) | Method for the preparation of biocides containing stabilized hypochlorite and bromide ion sources, and methods for controlling microbial fouling using the same | |
| US6149835A (en) | Methods for treating regulated waters with low levels of oxidizing halogens and hydrogen peroxides | |
| US5700377A (en) | Purification of water | |
| US5306432A (en) | Water purification | |
| US20100189805A1 (en) | Electrochemically treated water, method and device for the production thereof, and the use thereof as a disinfection agent | |
| US7255797B2 (en) | Composition including potassium monopersulfate and a halogen | |
| AU2008278002B2 (en) | Diaphragm analysis method and use of products obtained using the method | |
| JP2003146817A (en) | Antimicrobial algicidal agent composition, method for killing microbe and alga in water system and method for producing antimicrobial algicidal agent composition | |
| CN103503922A (en) | Disinfection powder for hospital wastewater disinfection | |
| WO1991008981A2 (en) | Solutions for stabilizing hydrogen peroxide containing solutions | |
| ZA200507503B (en) | Chemical composition for the treatment of water | |
| WO2008065631A1 (en) | Method and composition for treating water | |
| Muttamara et al. | Formation of trihalomethane from chemical disinfectants and humic substances in drinking water | |
| US20070080116A1 (en) | Method for chlorite removal | |
| RU2438991C2 (en) | Composition and method for disinfecting and decontaminating water | |
| JP2008169189A (en) | Agent for solidifying and disinfecting vomit | |
| Hasan et al. | Disinfection by-product removal by activated carbon-using batch mode | |
| CA2484889C (en) | Catalytic oxidation of peroxy salts | |
| JP3656164B2 (en) | Chalk deodorant | |
| WO2005019111A2 (en) | A composition including potassium monopersulfate and a halogen | |
| US20110024367A1 (en) | Cyclic process for in-situ generation of chlorine dioxide in biguanide treated aquatic facilities | |
| GB2305426A (en) | The purification of water | |
| AU2021105358A4 (en) | A COMPOSITION FOR pH CONTROL | |
| CA2085167C (en) | Disinfectant for use in aqueous systems |