FR2547574A1 - Process and plant for aerobic biological purification of aqueous effluents by employing free microorganisms and bound microorganisms - Google Patents

Process and plant for aerobic biological purification of aqueous effluents by employing free microorganisms and bound microorganisms Download PDF

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Publication number
FR2547574A1
FR2547574A1 FR8309882A FR8309882A FR2547574A1 FR 2547574 A1 FR2547574 A1 FR 2547574A1 FR 8309882 A FR8309882 A FR 8309882A FR 8309882 A FR8309882 A FR 8309882A FR 2547574 A1 FR2547574 A1 FR 2547574A1
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France
Prior art keywords
microorganisms
lining
aerobic biological
aeration tank
biological purification
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FR8309882A
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French (fr)
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FR2547574B1 (en
Inventor
Alexandru Zeana
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MULTIBIO
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MULTIBIO
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Publication of FR2547574B1 publication Critical patent/FR2547574B1/en
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Classifications

    • 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
    • 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
    • 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
    • C02F3/06—Aerobic processes using submerged filters
    • 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
    • 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
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/308—Biological phosphorus removal
    • 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

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Engineering & Computer Science (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
  • Biological Treatment Of Waste Water (AREA)

Abstract

According to the invention a judicious combination is made, by placing in position an appropriate plant, of the process of aerobic biological purification with free microorganisms and of aerobic biological purification with bound microorganisms by employing in the aeration tank 1 a plastic packing 4 with a high voidage coefficient, a high specific area and a structure allowing easy flow of the water and promoting the flocculation of the activated sludge. The surface aerator 3 is provided with a suction pipe 2, ensuring good circulation of the liquid within the packing 4.

Description

La présente invention a trait au domaine de l'épuration biologique aérobie des eaux résiduaires contenant des impurificateurs organiques biodé gradables. Le volume croissant du débit et de la charge impurificatrice des eaux résiduaires constitue un problème de plus en plus préoccupant pour les industriels et les municipalités compte tenu notamment du fait que ces impurificateurs présentent généralement de grands dangers pour l'environnement et pour les êtres vivants.The present invention relates to the field of aerobic biological treatment of waste water containing biodegradable organic impurifiers. The increasing volume of the flow rate and the impurifying charge of waste water constitutes an increasingly worrying problem for the industrialists and the municipalities taking into account in particular the fact that these impurifiers generally present great dangers for the environment and for the living beings.

Bien souvent, on adopte, pour les eaux résiduaires impurifiées avec des produits organiques biodégradables, la solution d'épuration biologique aérobie.Very often, aerobic biological treatment solution is adopted for waste water impurified with biodegradable organic products.

Parmi les eaux résiduaires utilisables comme influent dans une installation d'épuration biologique conformément l'invention, on peut citer les eaux résiduaires urbaines, les effluents de l'industrie agro-alimentaire, les effluents de l'industrie pétro-chimique, les effluents de l'industrie pharmaceutique etc...Among the waste water which can be used as an influence in a biological purification plant according to the invention, mention may be made of urban waste water, effluents from the food industry, effluents from the petrochemical industry, effluents from pharmaceutical industry etc ...

Le but essentiel de l'invention est de proposer un processus associant les deux types d'épuration biologique aérobie, en utilisant des microorganismes libres et des microorganismes fixés de façon telle que l'on puisse assurer une élimination de la pollution organique carbonée à forte charge ou conventionnelle simultanément à une nitrîffcation-dénitri- fication et à une élimination du phosphore de l'effluent.The essential object of the invention is to propose a process associating the two types of aerobic biological purification, using free microorganisms and microorganisms fixed in such a way that it is possible to ensure elimination of carbonaceous organic pollution at high load. or conventional simultaneously with nitriding-denitrification and removing phosphorus from the effluent.

Pour résoudre les problèmes et atteindre les résultats susvisés, l'invention (fig 1) propose l'utilisation dans la cuve d'aération 1, prévue d'aérateurs de surface 3, d'un garnissage en plastique 4 avec un grand coefficient de vide (95 % environ), une grande surface spécifique (environ 100 m2/m3 ou plus) et une structure permettant l'écoulement facile des eaux et favorisant la floculation des boues activées.To solve the problems and achieve the aforementioned results, the invention (fig 1) proposes the use in the aeration tank 1, provided with surface aerators 3, of a plastic lining 4 with a large vacuum coefficient (Around 95%), a large specific surface (around 100 m2 / m3 or more) and a structure allowing the easy flow of water and promoting the flocculation of activated sludge.

Ce garnissage permet une augmentation de l'age des microorganismes fixés jusqu'à une valeur dans le domaine de développement des bactéries nitrifiantes-dénitrifiantes même dans des conditions de charges organiques volumiques élevées. This packing allows an increase in the age of fixed microorganisms up to a value in the field of development of nitrifying-denitrifying bacteria even under conditions of high organic volume charges.

Grâce à la surface développée par le garnissage, la quantité totale de biomasse active par unité volumique de cuve d'aération augmente consi dérablenent, permettant une croissance en conséquence de la charge organique à épurer.Thanks to the surface developed by the lining, the total amount of active biomass per volume unit of aeration tank increases considerably, allowing a corresponding growth in the organic load to be purified.

Fn utilisant comme ouvrage d'aération les aérateurs de surface, la concentration en oxygène baisse de haut en bas permettant une fixation privilégiée pour les bactéries nitrifiantes dans la partie supérieure du garnissage et une fixation privilégiée pour les bactéries dénitrifiantes et celles retenant le phosphore dans la partie inférieure du garnissage.Fn using the surface aerators as an aeration structure, the oxygen concentration decreases from top to bottom allowing a privileged fixation for nitrifying bacteria in the upper part of the lining and a privileged fixation for denitrifying bacteria and those retaining phosphorus in the lower part of the lining.

L'effet de pompage de l'aérateur de surface avec un cylindre d'aspiration 2 assure la recirculation du liquide dans la cuve d'aération de façon à obtenir une utilisation intensive de toute la surface du garnissage.The pumping effect of the surface aerator with a suction cylinder 2 ensures the recirculation of the liquid in the aeration tank so as to obtain intensive use of the entire surface of the lining.

invention a également pour objet l'adaptation des installations existantes en prévoyant dans les cuves aérées par turbines de surface, du garnissage immergé selon la figure 1. Another subject of the invention is the adaptation of existing installations by providing immersed packing according to FIG. 1 in tanks aerated by surface turbines.

Un exemple de garnissage approprié pour ce type d'utilisation'est constitué des modules en PVC rigide, chimiquement inerte vis-à-vis des composés chimiques dissous dans les eaux municipales et industrielles, par exemple de type PLASDEK. An example of lining suitable for this type of use consists of rigid PVC modules, chemically inert with respect to the chemical compounds dissolved in municipal and industrial waters, for example of the PLASDEK type.

En sortant de la cuve d'aération, les eaux épurées sont généralement clarifiées dans le décanteur secondaire 5 avec un recyclage des boues par la pompe 6. En utilisant des décanteurs sans racleur (statiques), on peut prévoir du garnissage de même type pour améliorer la clarification par l'effet du lamellaire. Leaving the aeration tank, the purified water is generally clarified in the secondary decanter 5 with recycling of the sludge by the pump 6. By using decanters without scraper (static), it is possible to provide the same type of packing to improve clarification by the effect of the lamellar.

Claims (6)

REVENDICATIONS 1. Procédé et installation d'épuration biologique aérobie des eaux r- 1. Process and installation for aerobic biological purification of r- water siduaires caractérisé par l'association des microorganismes libres et des microorganismes fixés sur un garnissage remplissant partiellement la cuve d'aération. siduaries characterized by the association of free microorganisms and microorganisms fixed on a lining partially filling the aeration tank. 2. Procédé selon la revendication 1 caractérisé en ce que la quantité totale de la biomasse dans la cuve d'aération a une valeur élevée permettant des charges volumiques supérieures aux autres procédés en maintenant la qualité de l'effluent.2. Method according to claim 1 characterized in that the total amount of biomass in the aeration tank has a high value allowing higher volume loads than other methods while maintaining the quality of the effluent. 3. Procédé selon la revendication 2 caractérisé en ce que le garnissage permet une augmentation de l'age des microorganismes fixés jusqu'à une valeur dans le domaine du développement des bactéries nitrifiantesdénitrifiantes, même dans des conditions de charges organiques volumiques élevées, en obtenant la nitrification-dénitrification de l'effluent et une économie d'énergie électrique.3. Method according to claim 2 characterized in that the lining allows an increase in the age of the fixed microorganisms up to a value in the field of the development of nitrifying-denitrifying bacteria, even under conditions of high organic volume loads, by obtaining the nitrification-denitrification of the effluent and saving electrical energy. 4. Procédé selon la revendication 3 caractérisé en ce que l'effet de pompage de l'aérateur de surface avec un tuyau d'aspiration assure la recirculation du liquide dans la cuve d'aération de façon à permettre une utilisation-intensive de toute la surface du garnissage.4. Method according to claim 3 characterized in that the pumping effect of the surface aerator with a suction pipe ensures the recirculation of the liquid in the aeration tank so as to allow intensive use of all the lining surface. 5. Procédé selon l'une quelconque des revendications 1 à 4 caractérisé en ce que le gradient de concentration d'oxygène permet une fixation privilégiée pour les bactéries nitrifiantes dans la partie supérieure du garnissage et une fixation privilégiée pour les bactéries dénitrifiantes et celles retenant le phosphore dans la partie inférieure du garnissage en permettant des rendements supérieurs d'élimination du phosphore. 5. Method according to any one of claims 1 to 4 characterized in that the oxygen concentration gradient allows a preferred fixation for nitrifying bacteria in the upper part of the lining and a preferred fixation for denitrifying bacteria and those retaining the phosphorus in the lower part of the lining allowing higher yields of phosphorus removal. 6. Procédé selon l'une quelconque des revendications 1 à 5 caractérisé par l'utilisation, dans certains cas, du garnissage de même type dans le décanteur secondaire en vue d'améliorer la clarification qui devient de type lamellaire. 6. Method according to any one of claims 1 to 5 characterized by the use, in certain cases, of the packing of the same type in the secondary decanter in order to improve the clarification which becomes of lamellar type.
FR8309882A 1983-06-15 1983-06-15 PROCESS AND PLANT FOR THE AEROBIC BIOLOGICAL PURIFICATION OF WASTEWATER USING FREE AND FIXED MICROORGANISMS Expired FR2547574B1 (en)

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FR8309882A FR2547574B1 (en) 1983-06-15 1983-06-15 PROCESS AND PLANT FOR THE AEROBIC BIOLOGICAL PURIFICATION OF WASTEWATER USING FREE AND FIXED MICROORGANISMS

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0201924A2 (en) * 1985-05-15 1986-11-20 Water Engineering and Plant Construction GtA reg.Trust Process and apparatus for waste water purification
US5316668A (en) * 1992-12-22 1994-05-31 Jet, Inc. Wastewater treatment plant and apparatus
US5484524A (en) * 1993-02-01 1996-01-16 Jet, Inc. Wastewater treatment apparatus
EP0733595A1 (en) * 1995-03-21 1996-09-25 Wolfgang Dr. Dipl.-Ing. Becker Process for multishape water treatment and plant
US5563069A (en) * 1992-04-24 1996-10-08 The Ohio State University Research Foundation Extractive fermentation using convoluted fibrous bed bioreactor
FR2787782A1 (en) * 1998-12-23 2000-06-30 Omnium Traitement Valorisa PROCESS FOR TREATING AN EFFLUENT USING SIMULTANEOUS NITRIFICATION / DENITRIFICATION IN A BIOFILTER
NL1016781C2 (en) * 1999-12-13 2002-10-10 Envicon Klortechnik Verwaltung Reactor chamber for the denitrification of waste water.
WO2007048773A1 (en) * 2005-10-28 2007-05-03 Otv Sa 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
CN109368772A (en) * 2018-12-12 2019-02-22 成都利尔环保技术开发有限公司 Recycle current flow fixed bed aerobic biofilter

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2188162A (en) * 1938-02-21 1940-01-23 Henry B Schulhoff Sewage treatment
US3878097A (en) * 1972-07-31 1975-04-15 Said Mochizuki By Said Kawada Contaminated water treating apparatus
FR2357488A2 (en) * 1976-07-06 1978-02-03 Tymoszczuk Jerzy Waste water purificn. by activated sludge and biological filter - eliminates prim. and sec. clarifiers and sludge handling
US4137171A (en) * 1974-05-03 1979-01-30 Ishigaki Kiko Co., Ltd. Process for treating waste water and an apparatus therefor
US4190543A (en) * 1978-07-19 1980-02-26 Beckman William J Jr Waste water treatment apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2188162A (en) * 1938-02-21 1940-01-23 Henry B Schulhoff Sewage treatment
US3878097A (en) * 1972-07-31 1975-04-15 Said Mochizuki By Said Kawada Contaminated water treating apparatus
US4137171A (en) * 1974-05-03 1979-01-30 Ishigaki Kiko Co., Ltd. Process for treating waste water and an apparatus therefor
FR2357488A2 (en) * 1976-07-06 1978-02-03 Tymoszczuk Jerzy Waste water purificn. by activated sludge and biological filter - eliminates prim. and sec. clarifiers and sludge handling
US4190543A (en) * 1978-07-19 1980-02-26 Beckman William J Jr Waste water treatment apparatus

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0201924A3 (en) * 1985-05-15 1988-07-13 Water Engineering and Plant Construction GtA reg.Trust Process and apparatus for waste water purification
EP0201924A2 (en) * 1985-05-15 1986-11-20 Water Engineering and Plant Construction GtA reg.Trust Process and apparatus for waste water purification
US5563069A (en) * 1992-04-24 1996-10-08 The Ohio State University Research Foundation Extractive fermentation using convoluted fibrous bed bioreactor
US5316668A (en) * 1992-12-22 1994-05-31 Jet, Inc. Wastewater treatment plant and apparatus
US5484524A (en) * 1993-02-01 1996-01-16 Jet, Inc. Wastewater treatment apparatus
EP0733595A1 (en) * 1995-03-21 1996-09-25 Wolfgang Dr. Dipl.-Ing. Becker Process for multishape water treatment and plant
US6632365B1 (en) 1998-12-23 2003-10-14 Otv Sa Method for treating an effluent using simultaneous nitrification/denitrification in a biological filter
FR2787782A1 (en) * 1998-12-23 2000-06-30 Omnium Traitement Valorisa PROCESS FOR TREATING AN EFFLUENT USING SIMULTANEOUS NITRIFICATION / DENITRIFICATION IN A BIOFILTER
WO2000039034A1 (en) * 1998-12-23 2000-07-06 Otv Omnium De Traitement Et De Valorisation Method for treating an effluent using simultaneous nitrification/denitrification in a trickling filter
NL1016781C2 (en) * 1999-12-13 2002-10-10 Envicon Klortechnik Verwaltung Reactor chamber for the denitrification of waste water.
BE1014013A3 (en) * 1999-12-13 2003-02-04 Envicon Klaertech Verwalt REACTIONAL ENCLOSURE FOR THE DENTRIFICATION OF WASTEWATER.
WO2007048773A1 (en) * 2005-10-28 2007-05-03 Otv Sa Water treating method and arrangement integrating a fixed-bacteria biological treatment and flocculation-decantation
FR2902418A1 (en) * 2005-10-28 2007-12-21 Otv Sa PROCESS AND PLANT FOR THE TREATMENT OF WATER INTEGRATING BIOLOGICAL TREATMENT WITH FIXED BACTERIA AND FLOCULATION-DECANTATION
US8454831B2 (en) 2005-10-28 2013-06-04 Veolia Water Solutions & Technologies Support Biological and ballasetd flocculation treatment of wastewater
CN109368772A (en) * 2018-12-12 2019-02-22 成都利尔环保技术开发有限公司 Recycle current flow fixed bed aerobic biofilter
CN109368772B (en) * 2018-12-12 2024-07-05 成都利尔环保技术开发有限公司 Circulation flow fixed bed aerobic biological filter

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