EP0051582A1 - Procede et dispositif de traitement biologique d'eau usees - Google Patents

Procede et dispositif de traitement biologique d'eau usees

Info

Publication number
EP0051582A1
EP0051582A1 EP80901126A EP80901126A EP0051582A1 EP 0051582 A1 EP0051582 A1 EP 0051582A1 EP 80901126 A EP80901126 A EP 80901126A EP 80901126 A EP80901126 A EP 80901126A EP 0051582 A1 EP0051582 A1 EP 0051582A1
Authority
EP
European Patent Office
Prior art keywords
rotor
water
biological
waste water
submerged
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.)
Withdrawn
Application number
EP80901126A
Other languages
German (de)
English (en)
Inventor
Lars-Ake Hallen
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.)
NORDISKA VATTENPROJEKT AB
Original Assignee
NORDISKA VATTENPROJEKT 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 NORDISKA VATTENPROJEKT AB filed Critical NORDISKA VATTENPROJEKT AB
Publication of EP0051582A1 publication Critical patent/EP0051582A1/fr
Withdrawn legal-status Critical Current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
    • C02F3/08—Aerobic processes using moving contact bodies
    • C02F3/082—Rotating biological contactors
    • 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

Definitions

  • micro-orga ⁇ nisms In biological processing or treatment of waste water the organic content- therein is broken down by micro-orga ⁇ nisms sometimes growing on a substrate surface. Usually this micro-biological process is aerobic; that is, oxygen is used to break down the organic material. Consequently a number of designs have been invented in the past and one of the most useful is a rotating body with an enlarged surface (rotating biological contactor) , which is brought in and out of contact with air and waste water due to its rotation. In this way the micro-organisms are brought in contact with oxygen of the air as well as the waste water in the basin.
  • the object of the invention is to provide a method with which these new materials efficiently can be used without loss of optimal conditions.
  • OMPI IPO conditions that the rotor may have to be submerged to more than half its size, contrary to previous praxis according to which the rotor always has to bring the substrate in contact with the air as well as with the water.
  • the rotor may well be submerged entirely without negative effects on the micro-biological growth conditions. In this, way it is in fact possible to use rotor materials with a specific surface of up to 300 m 2 per m3 which should be compared with the previously
  • This device contains a basin, a bio ⁇ logical rotating contactor submerged to more than 50 % and with a specific surface of 110-300 m 2 per m3 volume of rotor. If materials with a very high specific surface, for example 120-250 m 2 per m3 rotor is used it may be of great advantage to arrange material towards the center of the rotor so that the specific area is less there in order to allow the water to flow more freely and provide for aerobic conditions there. Further a central part of the rotor may be left without contact material in order to allow an axial flow out of the rotor in these parts.
  • OMPI arranging a big wheel which may be cogged or toothed and with which a driving smaller wheel which may be cogged or toothed can be in contact.
  • the torque load on the primary gear box from the engine can be reduced exten- sively giving on the whole a more inexpensive arrangement.
  • the drive can cope with a great torque resistance as the rotor from time to time may have unsymmetric growth and thus be unbalanced.
  • it is also unnecessary to have the driving torque transmitted by the shaft on the rotor which may thus only have the effect of supporting the rotor.
  • the rotor In order to further di ⁇ minish the stress on the rotor hsaft the rotor can be pro ⁇ vided with closed air spaces giving a lifting effect on the rotor in the water in order to balance the total weight of rotor and biological growth.
  • the rotating biological contactor ma- terial has a specific surface of 150 m 2 per m3 this means

Abstract

Procede de traitement biochimique d'eaux usees, consistant a immerger un rotor de materiau de contact donnant une surface de croissance microbiologique dans des eaux usees superieure a 50% de son volume, de preference 55-85%, et pour eviter les risques de conditions anaerobies dans la partie centrale du rotor, l'alimentation d'oxygene aux eaux usees est accrue en augmentant par exemple le nombre de tours minute du rotor jusqu'a trois tours minute par exemple, obtenant ainsi par unite de temps une plus grande surface soumise a l'oxygene atmospherique.
EP80901126A 1980-05-22 1980-05-22 Procede et dispositif de traitement biologique d'eau usees Withdrawn EP0051582A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE1980/000150 WO1981003325A1 (fr) 1980-05-22 1980-05-22 Procede et dispositif de traitement biologique d'eaux usees

Publications (1)

Publication Number Publication Date
EP0051582A1 true EP0051582A1 (fr) 1982-05-19

Family

ID=20339920

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80901126A Withdrawn EP0051582A1 (fr) 1980-05-22 1980-05-22 Procede et dispositif de traitement biologique d'eau usees

Country Status (2)

Country Link
EP (1) EP0051582A1 (fr)
WO (1) WO1981003325A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4468326A (en) * 1982-06-29 1984-08-28 Jorgen Jolner Process in microbiological purification and a device and materials therefor
US4504393A (en) * 1984-06-08 1985-03-12 Chevron Research Company Method and apparatus for controlling a rotating biological contactor
AT386403B (de) * 1986-08-29 1988-08-25 Cordt Gerhard Dipl Ing Dr Vorrichtung zur biologischen abwasserreinigung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3704783A (en) * 1970-06-17 1972-12-05 Autotrol Corp Apparatus for treating sewage
CA1032280A (fr) * 1973-02-12 1978-05-30 Autotrol Corporation Appareil rotatif de traitement biologique par contact des eaux usees
AR207955A1 (es) * 1973-06-15 1976-11-22 Autotrol Corp Un aparato para el tratamiento biologico de aguas residuales
US3904525A (en) * 1973-08-23 1975-09-09 Lawrence R Rosenberg Waste treatment apparatus
US4137171A (en) * 1974-05-03 1979-01-30 Ishigaki Kiko Co., Ltd. Process for treating waste water and an apparatus therefor
CH602496A5 (fr) * 1976-10-08 1978-07-31 Mecafina Sa
US4211647A (en) * 1979-02-12 1980-07-08 Friedman Alexander A Anaerobic method of treating high-strength waste-water
DE2919244A1 (de) * 1979-05-12 1980-11-20 Mecafina Sa Tauchtropfkoerper fuer eine mechanisch- biologische abwasser-reinigungsanlage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8103325A1 *

Also Published As

Publication number Publication date
WO1981003325A1 (fr) 1981-11-26

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Legal Events

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Inventor name: HALLEN, LARS-AKE