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 biologiques

Info

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
Application number
FR7800338A
Other languages
English (en)
French (fr)
Other versions
FR2376825B1 (2
Inventor
Ronald J Christensen
George J Zivtins
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ChampionX LLC
Original Assignee
Nalco Chemical Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nalco Chemical Co filed Critical Nalco Chemical Co
Publication of FR2376825A1 publication Critical patent/FR2376825A1/fr
Application granted granted Critical
Publication of FR2376825B1 publication Critical patent/FR2376825B1/fr
Granted legal-status Critical Current

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)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Treatment Of Sludge (AREA)
FR7800338A 1977-01-06 1978-01-06 Procede d'elimination et de prevention de l'accumulation de boues biologiques Granted FR2376825A1 (fr)

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 (2) 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 (2)
BR (1) BR7800071A (2)
CA (1) CA1080578A (2)
DE (1) DE2758540C3 (2)
ES (1) ES465819A1 (2)
FR (1) FR2376825A1 (2)
GB (1) GB1560327A (2)
IT (1) IT1092250B (2)
MX (1) MX150026A (2)
NL (1) NL7800185A (2)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
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
EP1259115A1 (en) * 2000-02-25 2002-11-27 BetzDearborn Inc Method for enhancing biocidal activity
JPWO2019004320A1 (ja) * 2017-06-28 2020-04-30 三菱ケミカル株式会社 スライム抑制剤及びスライム抑制方法

Citations (2)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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
NL7800185A (nl) 1978-07-10
ES465819A1 (es) 1979-01-01
DE2758540A1 (de) 1978-07-13
MX150026A (es) 1984-03-05
GB1560327A (en) 1980-02-06
JPS5498321A (en) 1979-08-03
IT1092250B (it) 1985-07-06
BR7800071A (pt) 1978-10-03
DE2758540B2 (de) 1979-09-06
CA1080578A (en) 1980-07-01
DE2758540C3 (de) 1980-05-22
FR2376825B1 (2) 1981-11-27

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Legal Events

Date Code Title Description
ST Notification of lapse