GB316795A - Improvements in and relating to methods and plant for treating sewage by the activated sludge process - Google Patents

Improvements in and relating to methods and plant for treating sewage by the activated sludge process

Info

Publication number
GB316795A
GB316795A GB2534628A GB2534628A GB316795A GB 316795 A GB316795 A GB 316795A GB 2534628 A GB2534628 A GB 2534628A GB 2534628 A GB2534628 A GB 2534628A GB 316795 A GB316795 A GB 316795A
Authority
GB
United Kingdom
Prior art keywords
tank
sludge
liquid
pipe
air lift
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
GB2534628A
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.)
JOHN COLLINS DALLAS
Original Assignee
JOHN COLLINS DALLAS
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 JOHN COLLINS DALLAS filed Critical JOHN COLLINS DALLAS
Priority to GB2534628A priority Critical patent/GB316795A/en
Publication of GB316795A publication Critical patent/GB316795A/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
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/22—Activated sludge processes using circulation pipes
    • C02F3/223—Activated sludge processes using circulation pipes using "air-lift"
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/234—Surface aerating
    • 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
    • C02F3/24—Activated sludge processes using free-fall aeration or spraying
    • 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)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Removal Of Floating Material (AREA)

Abstract

316,795. Dallas, J. C., and Wilson, M. Sept. 4, 1928. Aerating.-An air lift for use in the activatedsludge process is arranged to discharge the liquid and sludge well above the liquid level so that it is further aerated as it falls in thin films or over screens or roughened or riffled surfaces. The air supply pipe 6, Fig. 9, passes down within the up-lift pipe 4, which has a distributor head, formed by plane or coned surfaces 36, 37, which may be provided with spiral vanes. The lower surface 36 is bent downwards at the outside, the inclined portion being provided with riffles 40 and preferably perforated. Fig. 1 shows four tanks A - - D, each provided with an air lift. The tanks A, B, are treatment tanks, the liquid passing from the tank A to the tank B through a pipe 9. The tank C is a settling tank receiving liquid from the tank B through pipes 9b, 11. Sludge which separates in the tank C is at intervals delivered by the air lift, which has no distributor head, through pipes 15, 16 to the tank D. The tank D is a sludge-aerating tank, from which the activated sludge is delivered through a pipe 19 to the tank A. Fig. 3 shows a special form of treatment tank, the side wall of which is concave, as shown, and merges into the conical bottom to which the air lift 4e extends. The treated liquid passes to an outlet 14<6> behind a baffle 20.
GB2534628A 1928-09-04 1928-09-04 Improvements in and relating to methods and plant for treating sewage by the activated sludge process Expired GB316795A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2534628A GB316795A (en) 1928-09-04 1928-09-04 Improvements in and relating to methods and plant for treating sewage by the activated sludge process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2534628A GB316795A (en) 1928-09-04 1928-09-04 Improvements in and relating to methods and plant for treating sewage by the activated sludge process

Publications (1)

Publication Number Publication Date
GB316795A true GB316795A (en) 1929-08-08

Family

ID=10226162

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2534628A Expired GB316795A (en) 1928-09-04 1928-09-04 Improvements in and relating to methods and plant for treating sewage by the activated sludge process

Country Status (1)

Country Link
GB (1) GB316795A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0112973A2 (en) * 1982-12-04 1984-07-11 Fried. Krupp Gesellschaft mit beschränkter Haftung Waste water purification device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0112973A2 (en) * 1982-12-04 1984-07-11 Fried. Krupp Gesellschaft mit beschränkter Haftung Waste water purification device
EP0112973A3 (en) * 1982-12-04 1986-01-08 Fried. Krupp Gesellschaft Mit Beschrankter Haftung Waste water purification device

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