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SE8304939D0 - WANT TO PREVENT BLOCKING OF AIR - Google Patents

WANT TO PREVENT BLOCKING OF AIR

Info

Publication number
SE8304939D0
SE8304939D0 SE8304939A SE8304939A SE8304939D0 SE 8304939 D0 SE8304939 D0 SE 8304939D0 SE 8304939 A SE8304939 A SE 8304939A SE 8304939 A SE8304939 A SE 8304939A SE 8304939 D0 SE8304939 D0 SE 8304939D0
Authority
SE
Sweden
Prior art keywords
want
air
aerators
prevent blocking
sewage
Prior art date
Application number
SE8304939A
Other languages
Swedish (sv)
Other versions
SE8304939L (en
Inventor
U Bretscher
Original Assignee
Nokia Oy Ab
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 Oy Ab filed Critical Nokia Oy Ab
Publication of SE8304939D0 publication Critical patent/SE8304939D0/en
Publication of SE8304939L publication Critical patent/SE8304939L/en

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)
  • Biological Treatment Of Waste Water (AREA)
  • Activated Sludge Processes (AREA)

Abstract

Blockages in bottom aerators in the treatment of water and sewage are eliminated or prevented under operating conditions by introducing formic acid into the gas fed into the aerators without taking the aerators out of operation. The acid converts the blocking material at least partly into a form which is soluble in the water or sewage to be treated.
SE8304939A 1982-09-16 1983-09-14 WANT TO PREVENT BLOCKING OF AIR SE8304939L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH5493/82A CH658044A5 (en) 1982-09-16 1982-09-16 METHOD FOR REMOVAL OR PREVENTING CLOGS IN DEEP AERATORS IN WATER TREATMENT AND WATER TREATMENT UNDER OPERATING CONDITIONS.

Publications (2)

Publication Number Publication Date
SE8304939D0 true SE8304939D0 (en) 1983-09-14
SE8304939L SE8304939L (en) 1984-03-17

Family

ID=4294516

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8304939A SE8304939L (en) 1982-09-16 1983-09-14 WANT TO PREVENT BLOCKING OF AIR

Country Status (10)

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

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3545194A1 (en) * 1985-12-20 1987-07-02 Sennheiser Electronic Opto-electronic transceiver
US5140203A (en) * 1988-09-27 1992-08-18 Mannesmann Rexroth Gmbh Control motor for a servo-valve
DE19952135A1 (en) * 1999-10-29 2001-06-13 Messer Griesheim Gmbh Waste water treatment process
AT411359B (en) * 2002-01-17 2003-12-29 Frey Wilhelm CLEANING PROCEDURE AND CLEANING LIQUID FOR FAN BODY
CN115417492B (en) * 2022-08-30 2023-06-20 同济大学建筑设计研究院(集团)有限公司 Advanced oxidation system based on underwater vision and control method

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 (en) * 1979-11-12 1981-05-22 Solitaire Produits Entretien F Aq. aerosol descaling and cleaning compsn. - contg. organic acid, surfactant, gelling agent and hygroscopic agent
ES8205588A1 (en) * 1980-09-11 1982-06-16 Sterling Drug Inc Removal of scale from porous diffusion tiles.
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
IT1170498B (en) 1987-06-03
CA1203328A (en) 1986-04-15
IT8348981A1 (en) 1985-03-15
IT8348981A0 (en) 1983-09-15
CS248709B2 (en) 1987-02-12
FR2533207A1 (en) 1984-03-23
FI76061C (en) 1989-05-30
DE3333602C2 (en) 1991-06-06
GB2130570B (en) 1986-09-17
FI833316A0 (en) 1983-09-16
AT392061B (en) 1991-01-25
FR2533207B1 (en) 1986-09-19
FI76061B (en) 1988-05-31
GB2130570A (en) 1984-06-06
ATA331083A (en) 1990-07-15
CH658044A5 (en) 1986-10-15
FI833316L (en) 1984-03-17
DE3333602A1 (en) 1984-03-22
GB8324649D0 (en) 1983-10-19
SE8304939L (en) 1984-03-17

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Legal Events

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NAV Patent application has lapsed

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