CA2389422A1 - Method for reducing harmful organisms in currents of water - Google Patents
Method for reducing harmful organisms in currents of water Download PDFInfo
- Publication number
- CA2389422A1 CA2389422A1 CA002389422A CA2389422A CA2389422A1 CA 2389422 A1 CA2389422 A1 CA 2389422A1 CA 002389422 A CA002389422 A CA 002389422A CA 2389422 A CA2389422 A CA 2389422A CA 2389422 A1 CA2389422 A1 CA 2389422A1
- Authority
- CA
- Canada
- Prior art keywords
- currents
- water
- treatment agent
- reducing harmful
- harmful organisms
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Physical Water Treatments (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention relates to a method of reducing harmful organisms in currents of water. The aim of the invention is to improve the already known methods of treatment for reducing harmful organisms such as algae, mussels and slime-producing organisms by adding a solution that contains peroxy carboxylic acid. To this end, the currents of water, especially cooling water currents are treated in an economical manner by adding to the flowing water the treatment agent once every 5 to 100 hours over a period of 3 to 60 minutes in an amount that corresponds to at least 1 ppm peroxy carboxylic acid.
Claims (5)
1. Method for reducing harmful organisms such as algae, mussels and slime-forming organisms in continuously or periodically flowing currents of water, in particular cooling water currents, comprising the addition of an aqueous treatment agent containing at least one peroxycarboxylic acid with 1 to 6 C atoms, characterised in that the treatment agent is added to the flowing water once every 5 to 100 hours over a period of 3 to 60 minutes in an amount corresponding to at least 1 ppm of peroxycarboxylic acid.
2. Method according to claim 1, characterised in that the treatment agent is added to the flowing water once a day over a period of 5 to 30 minutes.
3. Method according to claim 1 or 2, characterised in that an aqueous solution containing hydrogen peroxide and peroxyacetic acid and/or peroxyformic acid, in particular equilibrium solution, is used as treatment agent.
4. Method according to claim 3, characterised in that an equilibrium peroxyacetic acid containing 5 to 15 wt.%
of peroxyacetic acid is used.
of peroxyacetic acid is used.
5. Method according to one of claims 1 to 4, characterised in that the flowing water is cooling water.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19956348.9 | 1999-11-24 | ||
| DE19956348A DE19956348A1 (en) | 1999-11-24 | 1999-11-24 | Reducing biofouling in aqueous (especially cooling water) systems by treatment with an aqueous peracid composition at specified intervals |
| PCT/EP2000/008579 WO2001038234A1 (en) | 1999-11-24 | 2000-09-02 | Method of reducing harmful organisms in currents of water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2389422A1 true CA2389422A1 (en) | 2001-05-31 |
| CA2389422C CA2389422C (en) | 2009-11-17 |
Family
ID=7930051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002389422A Expired - Fee Related CA2389422C (en) | 1999-11-24 | 2000-09-02 | Method for reducing harmful organisms in currents of water |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP1232121B1 (en) |
| AT (1) | ATE273244T1 (en) |
| BR (1) | BR0015746B1 (en) |
| CA (1) | CA2389422C (en) |
| DE (2) | DE19956348A1 (en) |
| DK (1) | DK1232121T3 (en) |
| ES (1) | ES2225210T3 (en) |
| PT (1) | PT1232121E (en) |
| WO (1) | WO2001038234A1 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5393781A (en) * | 1993-07-08 | 1995-02-28 | Fmc Corporation | Method for controlling zebra mussels |
| DE4344598A1 (en) * | 1993-12-24 | 1995-06-29 | Degussa | Method for controlling the detoxification of cyanide effluents |
-
1999
- 1999-11-24 DE DE19956348A patent/DE19956348A1/en not_active Withdrawn
-
2000
- 2000-09-02 PT PT00960586T patent/PT1232121E/en unknown
- 2000-09-02 WO PCT/EP2000/008579 patent/WO2001038234A1/en active IP Right Grant
- 2000-09-02 ES ES00960586T patent/ES2225210T3/en not_active Expired - Lifetime
- 2000-09-02 DE DE50007406T patent/DE50007406D1/en not_active Revoked
- 2000-09-02 AT AT00960586T patent/ATE273244T1/en active
- 2000-09-02 CA CA002389422A patent/CA2389422C/en not_active Expired - Fee Related
- 2000-09-02 BR BRPI0015746-5A patent/BR0015746B1/en not_active IP Right Cessation
- 2000-09-02 DK DK00960586T patent/DK1232121T3/en active
- 2000-09-02 EP EP00960586A patent/EP1232121B1/en not_active Revoked
Also Published As
| Publication number | Publication date |
|---|---|
| ATE273244T1 (en) | 2004-08-15 |
| BR0015746A (en) | 2005-05-10 |
| ES2225210T3 (en) | 2005-03-16 |
| DK1232121T3 (en) | 2004-09-27 |
| WO2001038234A1 (en) | 2001-05-31 |
| DE19956348A1 (en) | 2001-05-31 |
| BR0015746B1 (en) | 2010-11-30 |
| PT1232121E (en) | 2004-10-29 |
| DE50007406D1 (en) | 2004-09-16 |
| EP1232121B1 (en) | 2004-08-11 |
| CA2389422C (en) | 2009-11-17 |
| EP1232121A1 (en) | 2002-08-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20140903 |