CA1203328A - Method for the elimination or prevention of blockages in bottom aerators in water treatment and sewage treatment under operating conditions - Google Patents

Method for the elimination or prevention of blockages in bottom aerators in water treatment and sewage treatment under operating conditions

Info

Publication number
CA1203328A
CA1203328A CA000436717A CA436717A CA1203328A CA 1203328 A CA1203328 A CA 1203328A CA 000436717 A CA000436717 A CA 000436717A CA 436717 A CA436717 A CA 436717A CA 1203328 A CA1203328 A CA 1203328A
Authority
CA
Canada
Prior art keywords
aerators
formic acid
gas
fed
sewage
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.)
Expired
Application number
CA000436717A
Other languages
English (en)
French (fr)
Inventor
Ulrich Bretscher
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.)
Nokia Oyj
Original Assignee
Nokia Oyj
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 Nokia Oyj filed Critical Nokia Oyj
Application granted granted Critical
Publication of CA1203328A publication Critical patent/CA1203328A/en
Expired 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/20—Activated sludge processes using diffusers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microbiology (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
  • Treating Waste Gases (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Physical Water Treatments (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Activated Sludge Processes (AREA)
  • Biological Treatment Of Waste Water (AREA)
CA000436717A 1982-09-16 1983-09-14 Method for the elimination or prevention of blockages in bottom aerators in water treatment and sewage treatment under operating conditions Expired CA1203328A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5493/82 1982-09-16
CH5493/82A CH658044A5 (de) 1982-09-16 1982-09-16 Verfahren zur beseitigung bzw. verhinderung von verstopfungen in tiefenbelueftern bei der wasseraufbereitung und abwasserbehandlung unter betriebsbedingungen.

Publications (1)

Publication Number Publication Date
CA1203328A true CA1203328A (en) 1986-04-15

Family

ID=4294516

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000436717A Expired CA1203328A (en) 1982-09-16 1983-09-14 Method for the elimination or prevention of blockages in bottom aerators in water treatment and sewage treatment under operating conditions

Country Status (10)

Country Link
AT (1) AT392061B (de)
CA (1) CA1203328A (de)
CH (1) CH658044A5 (de)
CS (1) CS248709B2 (de)
DE (1) DE3333602A1 (de)
FI (1) FI76061C (de)
FR (1) FR2533207B1 (de)
GB (1) GB2130570B (de)
IT (1) IT1170498B (de)
SE (1) SE8304939L (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3545194A1 (de) * 1985-12-20 1987-07-02 Sennheiser Electronic Optoelektronisches sende-empfangsgeraet
US5140203A (en) * 1988-09-27 1992-08-18 Mannesmann Rexroth Gmbh Control motor for a servo-valve
DE19952135A1 (de) * 1999-10-29 2001-06-13 Messer Griesheim Gmbh Verfahren zur Behandlung von Abwasser
AT411359B (de) * 2002-01-17 2003-12-29 Frey Wilhelm Reinigungsverfahren und reinigungsflüssigkeit für belüfterkörper
CN115417492B (zh) * 2022-08-30 2023-06-20 同济大学建筑设计研究院(集团)有限公司 基于水下视觉的高级氧化系统及控制方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2686138A (en) * 1951-09-15 1954-08-10 Chicago Pump Co Method for cleaning diffuser plates
GB1281334A (en) * 1968-08-01 1972-07-12 British Steel Corp Biological purification of coke oven effluent
US4199469A (en) * 1978-06-21 1980-04-22 Feldmann Chemie Composition and method for cleaning drinking water tanks
FR2469450A1 (fr) * 1979-11-12 1981-05-22 Solitaire Produits Entretien F Produit de detartrage et de nettoyage en particulier de surfaces en faience emaillee telles que des cuvettes de w.c.
ES8205588A1 (es) * 1980-09-11 1982-06-16 Sterling Drug Inc Un metodo para eliminar incrustaciones de losas porosas de -difusion.
US4382867A (en) * 1980-09-29 1983-05-10 Water Pollution Control Corp In place gas cleaning of diffusion elements

Also Published As

Publication number Publication date
FI76061B (fi) 1988-05-31
GB2130570A (en) 1984-06-06
FI833316A0 (fi) 1983-09-16
IT8348981A0 (it) 1983-09-15
SE8304939D0 (sv) 1983-09-14
CS248709B2 (en) 1987-02-12
IT8348981A1 (it) 1985-03-15
GB8324649D0 (en) 1983-10-19
IT1170498B (it) 1987-06-03
AT392061B (de) 1991-01-25
DE3333602A1 (de) 1984-03-22
FI833316L (fi) 1984-03-17
CH658044A5 (de) 1986-10-15
DE3333602C2 (de) 1991-06-06
FR2533207A1 (fr) 1984-03-23
FI76061C (fi) 1989-05-30
ATA331083A (de) 1990-07-15
SE8304939L (sv) 1984-03-17
FR2533207B1 (fr) 1986-09-19
GB2130570B (en) 1986-09-17

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