IT1251705B - Metodo per il trattamemto di acqua di rifiuto mediante un procedimento con fanghi attivati - Google Patents

Metodo per il trattamemto di acqua di rifiuto mediante un procedimento con fanghi attivati

Info

Publication number
IT1251705B
IT1251705B ITMI912963A IT1251705B IT 1251705 B IT1251705 B IT 1251705B IT MI912963 A ITMI912963 A IT MI912963A IT 1251705 B IT1251705 B IT 1251705B
Authority
IT
Italy
Prior art keywords
tank
waste water
respect
treatment
aeration
Prior art date
Application number
Other languages
English (en)
Inventor
Yoshimi Nagasaki
Hidetsugu Nakazawa
Original Assignee
Ajinomoto Kk
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 Ajinomoto Kk filed Critical Ajinomoto Kk
Publication of ITMI912963A0 publication Critical patent/ITMI912963A0/it
Publication of ITMI912963A1 publication Critical patent/ITMI912963A1/it
Application granted granted Critical
Publication of IT1251705B publication Critical patent/IT1251705B/it

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
    • C02F3/1205—Particular type of activated sludge processes
    • C02F3/121—Multistep treatment
    • 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
    • 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)
  • Activated Sludge Processes (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

Si tratta acqua di rifiuto effettuando un procedimento con fanghi attivati, la cui apparecchiatura è dotata di un'unità costituita da un serbatoio di aerazione costituito da tre serbatoi, ossia un primo serbatoio, un secondo serbatoio e un terzo serbatoio, detta acqua di rifiuto e microrganismi venendo introdotti nel primo serbatoio, mentre il rapporto di aerazione nel primo serbatoio è compreso tra 0,5 e 0,8 volumi/minuto rispetto alla quantità di liquido presente nel primo serbatoio, il rapporto di aerazione nel secondo serbatoio è compreso tra 0,1 e 0,4 volumi/minuto rispetto alla quantità di liquido presente nel secondo serbatoio e il rapporto di aerazione nel terzo serbatoio è compreso tra 0,1 e 0,3 volumi/minuto rispetto alla quantità di liquido presente nel terzo serbatoio, il perfezionamento consistendo nell'effettuare detto trattamento mediante il passaggio di aria contenente ozono, in una quantità compresa tra 0,01 e 0,16% in peso rispetto alla quantità di ossigeno, durante l'aerazione nel primo serbatoio.
IT91MI2963 1990-11-07 1991-11-07 Metodo per il trattamemto di acqua di rifiuto mediante un procedimento con fanghi attivati IT1251705B (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP29985190 1990-11-07
JP25485691A JP3099839B2 (ja) 1990-11-07 1991-10-02 活性汚泥法による廃水処理方法

Publications (3)

Publication Number Publication Date
ITMI912963A0 ITMI912963A0 (it) 1991-11-07
ITMI912963A1 ITMI912963A1 (it) 1993-05-07
IT1251705B true IT1251705B (it) 1995-05-19

Family

ID=26541887

Family Applications (1)

Application Number Title Priority Date Filing Date
IT91MI2963 IT1251705B (it) 1990-11-07 1991-11-07 Metodo per il trattamemto di acqua di rifiuto mediante un procedimento con fanghi attivati

Country Status (7)

Country Link
US (1) US5573670A (it)
JP (1) JP3099839B2 (it)
BE (1) BE1004260A5 (it)
FR (1) FR2668765B1 (it)
IT (1) IT1251705B (it)
MY (1) MY111432A (it)
PH (1) PH30783A (it)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7384555B1 (en) * 1993-09-22 2008-06-10 Kurita Water Industries Ltd. Process for biological treatment of aqueous organic wastes
JP4301582B2 (ja) * 1996-08-26 2009-07-22 味の素株式会社 凝集沈殿法による排水処理方法
JP3763439B2 (ja) * 1997-05-30 2006-04-05 三菱電機株式会社 廃水のオゾン処理方法およびオゾン処理装置
JP4489990B2 (ja) * 2001-04-25 2010-06-23 三菱電機株式会社 生物学的水処理装置
FR2835250B1 (fr) * 2002-01-29 2004-11-05 Ondeo Degremont Procede et dispositif de traitement biologique d'effluents aqueux, en vue de leur epuration
US6821415B2 (en) 2002-02-13 2004-11-23 Matthew L. Sharb Self-adjusting fluid surface skimmer and fluid treatment system using same
US20040025946A1 (en) * 2002-03-27 2004-02-12 Sharb Matthew L. Outlet apparatus for fluid handling systems
FR2845682B1 (fr) * 2002-10-10 2004-11-19 Air Liquide Procede de reduction des boues d'un traitement biologique de l'eau mettant en oeuvre de l'ozone
JP4907103B2 (ja) * 2005-05-12 2012-03-28 高砂熱学工業株式会社 生物処理槽の汚泥処理方法
JP2008036467A (ja) * 2006-08-01 2008-02-21 Takasago Thermal Eng Co Ltd 生物処理槽の制御システム
FR2916754A1 (fr) * 2007-05-31 2008-12-05 Air Liquide Procede de reduction de boues biologiques par traitement a l'ozone et controle du ph
US20170144910A1 (en) * 2015-11-24 2017-05-25 Kuwait University Multistage aeration system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3805481A (en) * 1964-04-23 1974-04-23 E Armstrong Apparatus for and process of treating liquids with a gas
JPS54136755A (en) * 1978-04-15 1979-10-24 Osaka Gas Co Ltd Active sludge disposal process for waste water
FR2490208A1 (fr) * 1980-09-15 1982-03-19 Trailigaz Procede de traitement d'eaux usees a l'aide de boues activees
JP2661093B2 (ja) * 1988-02-01 1997-10-08 味の素株式会社 活性汚泥法による廃水処理方法

Also Published As

Publication number Publication date
ITMI912963A1 (it) 1993-05-07
FR2668765A1 (fr) 1992-05-07
US5573670A (en) 1996-11-12
MY111432A (en) 2000-05-31
FR2668765B1 (fr) 1994-01-14
ITMI912963A0 (it) 1991-11-07
JPH04363197A (ja) 1992-12-16
BE1004260A5 (fr) 1992-10-20
PH30783A (en) 1997-10-17
JP3099839B2 (ja) 2000-10-16

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19971124