FR2376825A1 - Procede d'elimination et de prevention de l'accumulation de boues biologiques - Google Patents
Procede d'elimination et de prevention de l'accumulation de boues biologiquesInfo
- Publication number
- FR2376825A1 FR2376825A1 FR7800338A FR7800338A FR2376825A1 FR 2376825 A1 FR2376825 A1 FR 2376825A1 FR 7800338 A FR7800338 A FR 7800338A FR 7800338 A FR7800338 A FR 7800338A FR 2376825 A1 FR2376825 A1 FR 2376825A1
- Authority
- FR
- France
- Prior art keywords
- biological sludge
- elimination
- accumulation
- prevention
- polymers
- 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
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General 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)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Treatment Of Sludge (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
Les boues biologiques qui s'accumulent sur les surfaces de transfert de chaleur des équipements de refroidissement industriels peuvent être dispersées, et leur formation empêchée, en traitant l'eau utilisée dans ces systèmes par quelques ppm de certains polymères oxyde de propylène-oxyde d'éthylène. Ces polymères peuvent être utilisés avec des biocides bien connus comme le chlore. La figure montre le facteur de nettoyage des condenseurs d'une tour de refroidissement d'une centrale atomique.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US75740777A | 1977-01-06 | 1977-01-06 | |
US84416777A | 1977-10-21 | 1977-10-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2376825A1 true FR2376825A1 (fr) | 1978-08-04 |
FR2376825B1 FR2376825B1 (fr) | 1981-11-27 |
Family
ID=27116376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7800338A Granted FR2376825A1 (fr) | 1977-01-06 | 1978-01-06 | Procede d'elimination et de prevention de l'accumulation de boues biologiques |
Country Status (10)
Country | Link |
---|---|
JP (1) | JPS5498321A (fr) |
BR (1) | BR7800071A (fr) |
CA (1) | CA1080578A (fr) |
DE (1) | DE2758540C3 (fr) |
ES (1) | ES465819A1 (fr) |
FR (1) | FR2376825A1 (fr) |
GB (1) | GB1560327A (fr) |
IT (1) | IT1092250B (fr) |
MX (1) | MX150026A (fr) |
NL (1) | NL7800185A (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4340665A1 (de) * | 1993-11-30 | 1995-06-01 | Stockhausen Chem Fab Gmbh | Öl-in-Wasser-Emulsionen als Ersatz für Mikrobizide (Biozide) in wasserführenden Systemen |
US6241898B1 (en) * | 1996-04-19 | 2001-06-05 | Betzdearborn Inc. | Method for inhibiting microbial adhesion on surfaces |
US6514458B1 (en) * | 2000-02-25 | 2003-02-04 | Ge Betz, Inc. | Method for removing microbes from surfaces |
JP2003523370A (ja) * | 2000-02-25 | 2003-08-05 | ジーイー・ベッツ・インコーポレイテッド | 殺菌活性を向上させる方法 |
WO2019004320A1 (fr) * | 2017-06-28 | 2019-01-03 | 栗田工業株式会社 | Inhibiteur de biofilm et procédé d'inhibition de biofilm |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB898820A (en) * | 1959-07-17 | 1962-06-14 | Dearborn Chemicals Co | Improvements in or relating to the treatment of aqueous liquids, such as cooling water, to inhibit scaling and corrosion thereby |
US3962119A (en) * | 1971-08-06 | 1976-06-08 | Drew Chemical Corporation | Non-foaming dispersing composition |
-
1977
- 1977-11-30 CA CA292,112A patent/CA1080578A/fr not_active Expired
- 1977-12-06 GB GB50768/77A patent/GB1560327A/en not_active Expired
- 1977-12-23 DE DE2758540A patent/DE2758540C3/de not_active Expired
- 1977-12-30 IT IT52432/77A patent/IT1092250B/it active
-
1978
- 1978-01-05 BR BR7800071A patent/BR7800071A/pt unknown
- 1978-01-05 ES ES465819A patent/ES465819A1/es not_active Expired
- 1978-01-05 MX MX171946A patent/MX150026A/es unknown
- 1978-01-05 JP JP34678A patent/JPS5498321A/ja active Pending
- 1978-01-06 NL NL7800185A patent/NL7800185A/xx not_active Application Discontinuation
- 1978-01-06 FR FR7800338A patent/FR2376825A1/fr active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB898820A (en) * | 1959-07-17 | 1962-06-14 | Dearborn Chemicals Co | Improvements in or relating to the treatment of aqueous liquids, such as cooling water, to inhibit scaling and corrosion thereby |
US3962119A (en) * | 1971-08-06 | 1976-06-08 | Drew Chemical Corporation | Non-foaming dispersing composition |
Also Published As
Publication number | Publication date |
---|---|
JPS5498321A (en) | 1979-08-03 |
DE2758540C3 (de) | 1980-05-22 |
NL7800185A (nl) | 1978-07-10 |
GB1560327A (en) | 1980-02-06 |
IT1092250B (it) | 1985-07-06 |
DE2758540B2 (de) | 1979-09-06 |
BR7800071A (pt) | 1978-10-03 |
ES465819A1 (es) | 1979-01-01 |
MX150026A (es) | 1984-03-05 |
CA1080578A (fr) | 1980-07-01 |
FR2376825B1 (fr) | 1981-11-27 |
DE2758540A1 (de) | 1978-07-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |