IE41293B1 - Treatment of aqueous effluent with activated sludge and oxygen - Google Patents

Treatment of aqueous effluent with activated sludge and oxygen

Info

Publication number
IE41293B1
IE41293B1 IE1209/75A IE120975A IE41293B1 IE 41293 B1 IE41293 B1 IE 41293B1 IE 1209/75 A IE1209/75 A IE 1209/75A IE 120975 A IE120975 A IE 120975A IE 41293 B1 IE41293 B1 IE 41293B1
Authority
IE
Ireland
Prior art keywords
activated sludge
oxygen
effluent
finely divided
flow
Prior art date
Application number
IE1209/75A
Other versions
IE41293L (en
Original Assignee
Bayer Ag
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 Bayer Ag filed Critical Bayer Ag
Publication of IE41293L publication Critical patent/IE41293L/en
Publication of IE41293B1 publication Critical patent/IE41293B1/en

Links

Classifications

    • 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
    • C02F3/1278—Provisions for mixing or aeration of the mixed liquor
    • C02F3/1294—"Venturi" aeration means
    • 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
    • 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
    • C02F3/26—Activated sludge processes using pure oxygen or oxygen-rich gas
    • 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
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • 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)
  • Microbiology (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treating Waste Gases (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
  • Physical Water Treatments (AREA)
  • Activated Sludge Processes (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
  • Cyclones (AREA)

Abstract

1506649 Treatment of aqueous effluent with activated sludge BAYER AG 22 May 1975 [1 June 1974] 22195/75 Heading C1C [Also in Division F1] A process for treating aqueous effluent containing biodegradable material comprises suspending activated sludge in the effluent; breaking up the activated sludge into small flakes; introducing an oxygen-containing gas in fine distribution into the resulting finely divided suspension; and, after the oxygen has been at least partially consumed, recoagulating the finely divided suspension in a potential flow to form settlable flakes. (A potential flow is a flow about an axis of rotation which complies with the law rÎc = const.; where r= distance of a particle of liquid or solid from the axis of rotation, and c = velocity of the particle). In the flow diagram (Fig. 3) the oxygen-containing gas is injected at nozzles (103, 104, 105) into the activated sludge tank (120); the cyclone-style coagulator (113) is between the sludge tank and the settling tank (107). Partly purified effluent and finely divided activated sludge is recycled via pipes (112 and 102). High utilization of oxygen with minimal energy consumption. [GB1506649A]
IE1209/75A 1974-06-01 1975-05-30 Treatment of aqueous effluent with activated sludge and oxygen IE41293B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2426672A DE2426672C3 (en) 1974-06-01 1974-06-01 Process for the recoagulation of activated sludge flakes and a suitable recoagulator

Publications (2)

Publication Number Publication Date
IE41293L IE41293L (en) 1975-12-01
IE41293B1 true IE41293B1 (en) 1979-12-05

Family

ID=5917121

Family Applications (1)

Application Number Title Priority Date Filing Date
IE1209/75A IE41293B1 (en) 1974-06-01 1975-05-30 Treatment of aqueous effluent with activated sludge and oxygen

Country Status (12)

Country Link
JP (1) JPS603848B2 (en)
AT (1) AT341961B (en)
BE (1) BE829657A (en)
CH (1) CH597099A5 (en)
DE (1) DE2426672C3 (en)
DK (1) DK243675A (en)
FR (1) FR2275406A1 (en)
GB (1) GB1506649A (en)
IE (1) IE41293B1 (en)
IT (1) IT1035902B (en)
LU (1) LU72621A1 (en)
NL (1) NL7506469A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54136755A (en) * 1978-04-15 1979-10-24 Osaka Gas Co Ltd Active sludge disposal process for waste water
JPS5581789A (en) * 1978-12-15 1980-06-20 Nishihara Environ Sanit Res Corp Controller for aeration
JPS57145595U (en) * 1982-01-14 1982-09-13
JPS58189928U (en) * 1982-06-14 1983-12-16 株式会社ムサシノ機器製作所 On-site liquid level gauge
JPS59152425U (en) * 1983-03-31 1984-10-12 株式会社高津製作所 Oil level gauge with alarm
CS240757B1 (en) * 1983-07-04 1986-02-13 Svatopluk Mackrle Sewage biological activation treatment method with denitration in circulation system and equipment for performance of this method
FR3005311B1 (en) * 2013-05-03 2017-10-06 Lyonnaise Eaux France PROCESS AND INSTALLATION FOR TREATING WASTEWATER

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH547235A (en) * 1971-11-23 1974-03-29 Attisholz Cellulose PROCESS FOR THE ELIMINATION OF ORGANICALLY AND INORGANICALLY BONDED NITROGEN FROM DOMESTIC AND INDUSTRIAL WASTE WATER.
JPS531589B2 (en) * 1972-05-04 1978-01-20

Also Published As

Publication number Publication date
DK243675A (en) 1975-12-02
FR2275406B1 (en) 1982-04-30
CH597099A5 (en) 1978-03-31
DE2426672C3 (en) 1980-04-24
LU72621A1 (en) 1976-03-17
DE2426672B2 (en) 1979-08-09
NL7506469A (en) 1975-12-03
IE41293L (en) 1975-12-01
DE2426672A1 (en) 1975-12-18
AT341961B (en) 1978-03-10
JPS512260A (en) 1976-01-09
FR2275406A1 (en) 1976-01-16
ATA411675A (en) 1977-06-15
IT1035902B (en) 1979-10-20
BE829657A (en) 1975-12-01
JPS603848B2 (en) 1985-01-31
GB1506649A (en) 1978-04-05

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