JPS56111091A - Method and device of deep layer aeration - Google Patents

Method and device of deep layer aeration

Info

Publication number
JPS56111091A
JPS56111091A JP1299880A JP1299880A JPS56111091A JP S56111091 A JPS56111091 A JP S56111091A JP 1299880 A JP1299880 A JP 1299880A JP 1299880 A JP1299880 A JP 1299880A JP S56111091 A JPS56111091 A JP S56111091A
Authority
JP
Japan
Prior art keywords
line
shaft
liquid
residence time
water
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
JP1299880A
Other languages
Japanese (ja)
Other versions
JPS5925638B2 (en
Inventor
Harumi Matsuzaki
Sankichi Takahashi
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.)
Hitachi Plant Technologies Ltd
Original Assignee
Hitachi Plant Technologies Ltd
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 Hitachi Plant Technologies Ltd filed Critical Hitachi Plant Technologies Ltd
Priority to JP55012998A priority Critical patent/JPS5925638B2/en
Publication of JPS56111091A publication Critical patent/JPS56111091A/en
Publication of JPS5925638B2 publication Critical patent/JPS5925638B2/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
    • C02F3/226—"Deep shaft" processes
    • 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)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)

Abstract

PURPOSE:To perform oxygen dissolution into liquid effectively and enhance water treatment efficiency by shortening the residence time of the liquid in a pipe in which a deoxidation phenomenon occurs and prolonging the residence time of the liquid in a pipe in which an oxygen dissolution phenomenon occurs. CONSTITUTION:Within the water depth range of B5-D5 of a deep shaft 1, the sectional area is made large and the residence time of liquid is made long, and within the water depth range of D5-B5, the sectional area is made small and the residence time of liquid is made short. Waste water is supplied from a line 2 into the shaft 1 via a head tank 6, is mixed with air supplied from a line 3 in the shaft 1, circulates in the shaft 1 by way of the head tank 6 and during this time, it is subjected to activated sludge treatment. Part thereof is taken out by over flow (line 4) from the tank 6 and another waste water is supplied as much as it is discharged. The treated water taken out from the line 4 is divided to sludge and clean water, and part of the sludge is returned as return sludge from the line 5 into the shaft 1.
JP55012998A 1980-02-07 1980-02-07 Deep aeration method and device Expired JPS5925638B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55012998A JPS5925638B2 (en) 1980-02-07 1980-02-07 Deep aeration method and device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55012998A JPS5925638B2 (en) 1980-02-07 1980-02-07 Deep aeration method and device

Publications (2)

Publication Number Publication Date
JPS56111091A true JPS56111091A (en) 1981-09-02
JPS5925638B2 JPS5925638B2 (en) 1984-06-19

Family

ID=11820863

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55012998A Expired JPS5925638B2 (en) 1980-02-07 1980-02-07 Deep aeration method and device

Country Status (1)

Country Link
JP (1) JPS5925638B2 (en)

Also Published As

Publication number Publication date
JPS5925638B2 (en) 1984-06-19

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