WO1988001608A1 - Installation pour l'epuration biologique des eaux usees - Google Patents

Installation pour l'epuration biologique des eaux usees Download PDF

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Publication number
WO1988001608A1
WO1988001608A1 PCT/AT1987/000050 AT8700050W WO8801608A1 WO 1988001608 A1 WO1988001608 A1 WO 1988001608A1 AT 8700050 W AT8700050 W AT 8700050W WO 8801608 A1 WO8801608 A1 WO 8801608A1
Authority
WO
WIPO (PCT)
Prior art keywords
wastewater
waste water
stage
installation
tank
Prior art date
Application number
PCT/AT1987/000050
Other languages
German (de)
English (en)
Inventor
Gerhard Cordt
Original Assignee
Gerhard Cordt
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 Gerhard Cordt filed Critical Gerhard Cordt
Publication of WO1988001608A1 publication Critical patent/WO1988001608A1/fr

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
    • C02F3/1215—Combinations of activated sludge treatment with precipitation, flocculation, coagulation and separation of phosphates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
    • B01D21/0045—Plurality of essentially parallel plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
    • B01D21/0057—Settling tanks provided with contact surfaces, e.g. baffles, particles with counter-current flow direction of liquid and solid particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/02—Settling tanks with single outlets for the separated liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2427—The feed or discharge opening located at a distant position from the side walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2488—Feed or discharge mechanisms for settling tanks bringing about a partial recirculation of the liquid, e.g. for introducing chemical aids
    • 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
    • C02F3/006—Regulation methods for biological treatment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/36—Biological material, e.g. enzymes or ATP
    • 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

  • the invention relates to a device for biological wastewater treatment, with a uniformly flowing wastewater tank and a rotating and drivable immersion body overgrown with aerobic microorganisms, partially immersed in the tank.
  • Biological wastewater treatment means the decomposition of the organic substances contained in the wastewater by aerobic microorganisms, especially bacteria, into fragments that are harmless to the aquatic flora and fauna, whereby an adequate oxygen supply is a prerequisite for the unhindered biological degradation of the pollutants.
  • Higher wastewater concentrations therefore definitely require an appropriate oxygen supply, which can be achieved in different ways.
  • Rotating and drivable immersion bodies that take up suitable bacterial colonies and, due to the rotation, immerse these bacteria alternately to break down the pollutants into the wastewater and bring them into contact with the ambient air for oxygen supply have proven their worth. It has been shown, however, that these known immersion bodies rotating at constant speed do not satisfy fluctuations in the wastewater load and in particular the required one when the load increases Cannot ensure oxygen supply to the microorganisms.
  • DE-OS 3 016 920 shows, there are already devices for removing the organic carbon and nitrogen from wastewater with several immersion bodies, each belonging to a process stage and rotating at different speeds, the speed from stage to stage according to the cleaning progress sinks.
  • these devices are specifically designed for carbon and nitrogen removal and are not suitable for comprehensive wastewater treatment.
  • the immersion bodies work at a constant speed per stage and only run at different speeds in stages, so that adaptation to fluctuations in the wastewater load is not possible.
  • the invention is therefore based on the object to remedy these shortcomings and to improve a device of the type described in a simple manner so that an unobstructed and to the desired extent effective biodegradation is always guaranteed regardless of the respective wastewater accumulation and degree of pollution.
  • the invention solves this problem in that the immersion body rotates at a controllable speed and its speed can be changed in the opposite direction to the wastewater load.
  • This simple measure allows the residence time of the microorganisms in the air to be influenced and the associated oxygen supply to the microorganisms to be adapted to the respective wastewater pollution.
  • Various criteria that record the wastewater load can be used to control the immersion body speed, for example the amount of wastewater that arises.
  • the control program for the immersion bodies can be based on statistical evaluations or the like. also adjust for longer periods of time and vary the immersion body speed, for example, in a daily or seasonal rhythm corresponding to the expected wastewater.
  • the sewage treatment plant shown comprises a mechanical stage 1, a biological stage 2 and a chemical-physical stage 3, the mechanical stage 1 serving for the preliminary treatment of the wastewater having settling tanks 4 and a pump shaft 5, the biological stage 2 serving for biodegrading the pollutants
  • Has immersion body device 6 and the chemical stage 3 used for clarification consists of a mixing tank with a flocculant addition device 8, a flocculation tank 9 and a separation tank 10 with a lamella separator 11.
  • the wastewater pre-clarified in the mechanical stage 1 is conveyed from the pump shaft 5 via a riser 12 to a flow distributor 13, which applies a constant amount of wastewater to the immersion device 6, while the excess amount is returned through the overflow line 14 flows to the settling tank 4.
  • the immersion body device 6 has a waste water trough 15, into which a immersion body 16 which is mounted so as to be rotatable and drivable is partially immersed.
  • the immersion body 16 forms a large number of axially side-by-side disks to enlarge its surface and is covered with aerobic microorganisms which, due to the immersion body rotation, immerse alternately in the wastewater of the tub 15 and are then brought into contact with the ambient air to supply oxygen, so that the desired biological Degradation of the pollutants contained in the wastewater takes place.
  • the immersion body 16 rotates at a controllable speed and its speed can be changed in the opposite direction to the wastewater load, so that with increasing wastewater load due to the slower circulation speed of the immersion body 16, a longer aeration time and thereby an increased oxygen supply be ensured for the microorganisms.
  • the waste water enters the chemical stage 3, where it is mixed with flocculant 8 in the mixing tank 7 for clarification and then flows into the flocculation tank 9 to form the flakes.
  • the subsequent separation basin 10 with its lamellar separator 11 allows the flakes to be separated from the water, which can be drained into the receiving water.
  • the waste water can be partially or completely re-depending on the amount obtained the chemical stage 2 can be returned to the settling basin 4 via a lockable recirculation line 17, and the wastewater / sludge mixture can also be pumped back from the separation basin 10 into the settling basin 4 via a sludge line 18.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Microbiology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Molecular Biology (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biological Treatment Of Waste Water (AREA)

Abstract

L'installation pour l'épuration biologique des eaux usées comporte une cuve (15) traversée de façon régulière par les eaux, dans laquelle se trouve plongé partiellement un élément (16) tournant entraîné recouvert de micro-organismes aérobies. L'élément plongeur (16), pour assurer un apport en oxygène adapté à la quantité d'eau traitée, a une vitesse de rotation réglable de manière inversement proportionnelle à ladite quantité.
PCT/AT1987/000050 1986-08-29 1987-08-28 Installation pour l'epuration biologique des eaux usees WO1988001608A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA2336/86 1986-08-29
AT233686A AT386403B (de) 1986-08-29 1986-08-29 Vorrichtung zur biologischen abwasserreinigung

Publications (1)

Publication Number Publication Date
WO1988001608A1 true WO1988001608A1 (fr) 1988-03-10

Family

ID=3532456

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1987/000050 WO1988001608A1 (fr) 1986-08-29 1987-08-28 Installation pour l'epuration biologique des eaux usees

Country Status (3)

Country Link
EP (1) EP0285616A1 (fr)
AT (1) AT386403B (fr)
WO (1) WO1988001608A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0385011A1 (fr) * 1989-03-03 1990-09-05 Inka Systems (Uk) Limited Appareils et procédés de traitement de liquides
GR1002753B (el) * 1996-10-09 1997-08-26 �.�. ��. ��������������-�.����������� Βιοτυμπανο επεξεργασιας αποβλητων
WO2007048773A1 (fr) * 2005-10-28 2007-05-03 Otv Sa Procede et installation pour le traitement des eaux integrant un traitement biologique a bacteries fixees et une floculation-decantation
US8454831B2 (en) 2005-10-28 2013-06-04 Veolia Water Solutions & Technologies Support Biological and ballasetd flocculation treatment of wastewater

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981003325A1 (fr) * 1980-05-22 1981-11-26 Nordiska Vattenprojekt Ab Nova Procede et dispositif de traitement biologique d'eaux usees
DE3208173A1 (de) * 1982-03-06 1983-09-08 Volker Dipl.-Ing. 7200 Tuttlingen Stengelin Verfahren und vorrichtung zum entfernen des stickstoffs aus dem abwasser mittels tauchtropfkoerper

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3016920A1 (de) * 1980-05-02 1981-11-05 Volker Dipl.-Ing. 7200 Tuttlingen Stengelin Verfahren und vorrichtung zum entfernen des organischen kohlenstoffs und des stickstoffs aus abwasser

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981003325A1 (fr) * 1980-05-22 1981-11-26 Nordiska Vattenprojekt Ab Nova Procede et dispositif de traitement biologique d'eaux usees
DE3208173A1 (de) * 1982-03-06 1983-09-08 Volker Dipl.-Ing. 7200 Tuttlingen Stengelin Verfahren und vorrichtung zum entfernen des stickstoffs aus dem abwasser mittels tauchtropfkoerper

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Journal of Water Pollution Control Federation, Band 51, Nr. 11, November 1979, (Washington, D.C., US), A.A. FRIEDMAN et al.: "Effect of Disk Rotational Speed on Biological Contactor Efficiency", seiten 2678-2690 siehe seite 2675, rechte spalte, Letzter Absatz - seite 2679, linke Spalte, Absatz 2; seite 2681, rechte spalte, zeilen 9-25" seiten 2684-2685, Absatz: "Discussion"; seiten 2688-2689, Absatz: "Cunclusion" *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0385011A1 (fr) * 1989-03-03 1990-09-05 Inka Systems (Uk) Limited Appareils et procédés de traitement de liquides
GR1002753B (el) * 1996-10-09 1997-08-26 �.�. ��. ��������������-�.����������� Βιοτυμπανο επεξεργασιας αποβλητων
WO2007048773A1 (fr) * 2005-10-28 2007-05-03 Otv Sa Procede et installation pour le traitement des eaux integrant un traitement biologique a bacteries fixees et une floculation-decantation
FR2902418A1 (fr) * 2005-10-28 2007-12-21 Otv Sa Procede et installation pour le traitement des eaux integrant un traitement biologique a bacteries fixees et une floculation-decantation
AU2006307924B2 (en) * 2005-10-28 2011-06-09 Veolia Water Solutions & Technologies Support Water treating method and arrangement integrating a fixed-bacteria biological treatment and flocculation-decantation
US8454831B2 (en) 2005-10-28 2013-06-04 Veolia Water Solutions & Technologies Support Biological and ballasetd flocculation treatment of wastewater

Also Published As

Publication number Publication date
ATA233686A (de) 1988-01-15
EP0285616A1 (fr) 1988-10-12
AT386403B (de) 1988-08-25

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