FR2473548A1 - METHOD FOR THE MAINTENANCE OF THE BIOLOGICAL ACTIVITY AND ADAPTATION OF BIOCENOSIS IN A WET AND BIOLOGICAL AIR PURIFICATION FACILITY REJECTED DURING OPERATING STOP PERIODS - Google Patents
METHOD FOR THE MAINTENANCE OF THE BIOLOGICAL ACTIVITY AND ADAPTATION OF BIOCENOSIS IN A WET AND BIOLOGICAL AIR PURIFICATION FACILITY REJECTED DURING OPERATING STOP PERIODS Download PDFInfo
- Publication number
- FR2473548A1 FR2473548A1 FR8100207A FR8100207A FR2473548A1 FR 2473548 A1 FR2473548 A1 FR 2473548A1 FR 8100207 A FR8100207 A FR 8100207A FR 8100207 A FR8100207 A FR 8100207A FR 2473548 A1 FR2473548 A1 FR 2473548A1
- Authority
- FR
- France
- Prior art keywords
- biocenosis
- biological
- adaptation
- wet
- air
- 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.)
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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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/84—Biological processes
-
- 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
- C02F3/04—Aerobic processes using trickle filters
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Biomedical Technology (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Molecular Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Treating Waste Gases (AREA)
- Biological Treatment Of Waste Water (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
Agissant par la fourniture d'une solution nutritive, ce procédé consiste essentiellement à faire subir un prélavage à l'air rejeté et à fournir à la biocénose pendant les périodes d'arrêt de fonctionnement, le liquide de prélavage conservé, enrichi par les matières contenues dans l'air. En outre, on peut fournir à la biocénose le liquide de prélavage après en avoir séparé les particules de poussière dispersées.Acting by the supply of a nutrient solution, this process consists essentially in subjecting the exhaust air to a pre-wash and in supplying the biocenosis during periods of stoppage of operation, the pre-wash liquid retained, enriched by the materials contained in the air. In addition, the pre-wash liquid can be supplied to the biocenosis after separating the dispersed dust particles therefrom.
Description
La présente invention concerne un procédé d'entre-The present invention relates to a process for
tien de l'activité et de l'adaptation biologiques de la biological activity and adaptation of the
biocénose dans une installation d'épuration humide et bio- biocenosis in a wet and bio-purification plant
logique d'air rejeté, pendant des périodes d'arrêt de fonc- rejected air logic, during periods of downtime
tionnement. La purification d'air rejeté par lavage à l'eau, par exemple dans des tours d'arrosage ou de pulvérisation et la décomposition d'éléments polluants par oxydation tioning. The purification of air rejected by washing with water, for example in watering or spraying towers and the decomposition of pollutants by oxidation
biologique sont généralement connus et ont trouvé de nom- are generally known and have found
breuses applications. Des composés organiques dissous ou colloïdaux, et en partie également des composés minéraux sont utilisés comme source d'alimentation et sont oxydés many applications. Dissolved or colloidal organic compounds, and partly also mineral compounds are used as a source of food and are oxidized
par des micro-organismes (bactéries, champignons, proto- by micro-organisms (bacteria, fungi, proto-
zoaires) qui se rencontrent sur les corps arrosés ou sur les eaux usées. (11 y a lieu de consulter à cet effet les Brevets de la République Fédérale Allemande N0s 26 56 689, 47 675, 20 20 207, le Brevet des Etats Unis d'Amérique NO 22 00 581, le Brevet Français NO 21 75 929 et le Brevet zoaires) that meet on watered bodies or on wastewater. For this purpose, see Patents of the German Federal Republic Nos. 26 56 689, 47 675, 20 207, US Pat. No. 22 00 581, French Patent No. 21 75 929 and US Pat. the patent
Néerlandais NO 71 02 133).Dutch NO 71 02 133).
Il est connu qu'une population de micro-organismes (biocénose) dans une installation de purification de ce It is known that a population of microorganisms (biocenosis) in a purification plant of this
genre s'adapte à la nourriture qui lui est offerte de sor- gender adapts to the food that is offered to him
te qu'après un certain temps d'adaptation, même des compo- after a certain period of adaptation, even
sés difficiles à décomposer peuvent être détruits avec difficult to decompose can be destroyed with
succès.success.
Pendant les périodes d'arrêt de fonctionnement de l'installation de purification, par exemple pendant la During shutdown periods of the purification plant, for example during the
nuit ou en fin de semaine, la biocénose doit être mainte- at night or at the end of the week, the biocenosis must now be
nue artificiellement en vie par l'approvisionnement en naked artificially alive by the supply of
nourriture et en oxygène. Il convient que la solution nu- food and oxygen. It is appropriate that the numerical solution
tritive contienne également des matières qui doivent être tritive also contains materials that must be
détruites pendant les périodes de fonctionnement de l'in- destroyed during the periods of operation of the in-
stallation, afin d'éviter d'éventuelles désadaptations de la biocénose, réduisant le rendement de la décomposition biologique (voir à cet effet les Brevets de la République Fédérale Allemande NO 26 56 689 page 15 et N0 20 20 207, page 4). Mais la préparation de ces solutions nutritives est difficile, car d'une part la composition de l'air rejeté n'est pas très connue en ce qui concerne son type in order to avoid possible mismatches of the biocenosis, reducing the yield of the biological decomposition (see for this purpose the Patents of the German Federal Republic No. 26 56 689 page 15 and No. 20 207, page 4). But the preparation of these nutritive solutions is difficult, because on the one hand the composition of the rejected air is not well known with regard to its type.
et sa concentration, et que d'autre part elle subit des- and its concentration, and that on the other hand it undergoes
fluctuations permanentes résultant de variations plus ou permanent fluctuations resulting from more variations or
moins importantes de la production. Il serait donc sou- less important production. It would therefore be
haitable que la composition de la solution nutritive chan- that the composition of the nutrient solution changes
ge continuellement, ce qui est irréalisable en pratique. continually, which is impracticable in practice.
Il y a donc lieu de résoudre le problème du main- It is therefore necessary to resolve the problem of
tien de l'activité biologique et de l'adaptation d'une biocénose pendant les périodes d'arrêt de fonctionnement d'une installation de purification d'air rejeté, par la fourniture d'une solution nutritive dont la composition correspond toujours à l'état actuel de la composition des the biological activity and the adaptation of a biocenosis during the shutdown periods of a rejected air purification plant, by the provision of a nutritive solution whose composition always corresponds to the current state of the composition of
gaz rejetés.gas discharged.
L'invention a donc pour objet de résoudre le pro- The object of the invention is therefore to solve the problem
blème par un procédé qui sera décrit ci-après. by a method which will be described hereinafter.
Un prélavage à l'eau précède l'opération de la- Prewashing with water precedes the operation of the
vage biologique de l'air rejeté. Les matières que contient biology of the rejected air. The materials that it contains
l'air rejeté, sous forme de gaz ou de vapeurs, se dissol- the exhaust air, in the form of gases or vapors, dissolves
vent jusqu'à saturation dans l'eau de lavage à l'étage de wind up to saturation in the wash water on the floor of
prélavage. Ce résultat est atteint plus ou moins rapide- prewash. This result is reached more or less quickly
ment en fonction.des matières que contient l'air rejeté et de leur concentration. Dans le cas courant, cela ne prend néanmoins que quelques heures. Le prélavage est fait d'une manière connue, par exemple en faisant passer les gaz par une tour d'arrosage ou de pulvérisation dans laquelle le liquide de prélavage est pompé, ou en faisant passer le gaz de manière qu'il barbote dans le liquide de prélavage. Le prélavage peut se faire dans une partie séparée de l'installation ou dans une partie intégrée dans l'absorbeur de l'étage biologique. Il est utile de depending on the contents of the exhaust air and their concentration. In the current case, however, it only takes a few hours. The prewash is done in a known manner, for example by passing the gases through a watering or spraying tower in which the prewash liquid is pumped, or by passing the gas so that it bubbles in the liquid Prewash. The prewash can be done in a separate part of the installation or in a part integrated in the absorber of the biological stage. It is useful to
mesurer la quantité de liquide de prélavage afin de dé- measure the amount of prewash liquid to de-
terminer si la quantité de matières que contient l'air rejeté et qui se dissolvent dans ce liquide suffisent à end if the amount of material in the air that is released and dissolves in that liquid is sufficient to
lanutrition de la bioconose pendant les périodes d'arrêt. the uptake of bioconosis during periods of inactivity.
Mais il est également possible de fournir à la biocénose avec le liquide de prélavage des matières de nutrition connues, comme du sucre, du lait en poudre, des phosphates, etc. Dans ce cas, les matières que contient l'air rejeté ne représentent plus l'unique source de nutrition mais ne But it is also possible to provide the biocenosis with the prewash liquid known nutrition materials, such as sugar, milk powder, phosphates, etc. In this case, the materials contained in the rejected air are no longer the sole source of nutrition but
servent qu'à éviter d'éventuelles désadaptations. La quan- serve only to avoid possible mismatches. The quantity
tité de liquide de prélavage peut ainsi être réduite dans pre-wash liquid can be reduced in
l'étage correspondant.the corresponding floor.
Si l'air rejeté contient de la poussière en plus des constituants gazeux et des vapeurs de forte odeur, un If the exhaust air contains dust in addition to gaseous constituents and strong odor vapors, a
dépoussiérage effectué dans l'étage de prélavage est néces- Dusting carried out in the prewash stage is neces-
saire. Il est donc possible de supprimer l'étage de dé- sary. It is therefore possible to delete the floor of
poussiérage qui est fréquemment nécessaire devant l'en- dusting which is frequently necessary in front of
trée de l'installation d'épuration d'air. L'étage de pré- of the air purification plant. The floor of
lavage permet en même temps de saturer de vapeur d'eau washing allows at the same time to saturate with water vapor
l'air rejeté qui pénètre dans l'installation d'épuration. the rejected air entering the purification plant.
L'élimination du calcaire et l'adjonction de sel dans l'eau de lavage peuvent donc être supprimées dans l'étage The removal of limestone and the addition of salt in the wash water can be removed in the floor
d'épuration biologique. Si l'air rejeté contient une quan- biological purification. If the rejected air contains a quantity
tité considérable de poussière, une épuration préliminaire, considerable amount of dust, preliminary purification,
mécanique ou éventuellement chimique (précipitation, flo- mechanical or possibly chemical (precipitation, flora
culation) de l'eau de prélavage à l'étage de prélavage culation) pre-wash water at the prewash stage
peut s'avérer nécessaire avant son utilisation comme solu- may be necessary before use as a solution.
tion nutritive. Si la quantité d'eau de lavage présente dans l'étage de prélavage est plus importante que celle nutrition. If the quantity of washing water present in the prewash stage is greater than that
qui est évacuée pendant les temps d'arrêt de fonctionne- which is evacuated during downtime
ment de l'étage de lavage principal, l'excédant de liquide de prélavage peut bien entendu être amené à l'étage de lavage principal, même pendant son fonctionnement, et of the main washing stage, the excess of prewash liquid can of course be brought to the main washing stage, even during its operation, and
s'écouler par celui-ci.to flow through this one.
Des teneurs en éléments polluants de l'air rejeté Pollutant content of the rejected air
présentant de fortes fluctuations sont compenséeslarge- with strong fluctuations are compensated
ment dans l'étage de prélavage par les opérations de dé- in the prewash stage by the operations of
sorption et d'absorption ce qui permet de compenser les sorption and absorption which compensates for
surcharges instantanées du système biologique. Cela per- instantaneous overload of the biological system. This allows
met d'obtenir une charge plus régulière de l'étage bio- puts a more regular load on the bio-level
logique ainsi qu'une plus grande efficacité. logic and greater efficiency.
Claims (3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3000705A DE3000705C2 (en) | 1980-01-10 | 1980-01-10 | Process for maintaining the biological activity and adapting the biocenosis of a biological waste air wet cleaning system during downtimes |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2473548A1 true FR2473548A1 (en) | 1981-07-17 |
FR2473548B1 FR2473548B1 (en) | 1985-07-12 |
Family
ID=6091797
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8100207A Expired FR2473548B1 (en) | 1980-01-10 | 1981-01-08 | PROCESS FOR MAINTAINING BIOLOGICAL ACTIVITY AND ADAPTATION OF BIOCENOSIS IN A WET AND BIOLOGICAL AIR CLEANING PLANT DURING PERIODS OF SHUTDOWN OF OPERATION |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE886868A (en) |
DE (1) | DE3000705C2 (en) |
FR (1) | FR2473548B1 (en) |
GB (1) | GB2067092B (en) |
NL (1) | NL8100031A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3784480D1 (en) * | 1986-12-05 | 1993-04-08 | Ciba Geigy Ag | EXHAUST AIR PURIFICATION PROCEDURE. |
CH674715A5 (en) * | 1988-04-07 | 1990-07-13 | Ciba Geigy Ag | |
DE4009109A1 (en) * | 1990-03-21 | 1991-09-26 | Fraunhofer Ges Forschung | METHOD FOR THE MICROBIOLOGICAL CLEANING OF EXHAUST AIR FLOWS CONTAMINATED WITH HALOGENATED ETHENES AND / OR WITH HALOGENATED BUTADIENES |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2328501A1 (en) * | 1975-10-24 | 1977-05-20 | Daimler Benz Ag | Contaminated air scrubbing process |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2200581A (en) * | 1934-12-24 | 1940-05-14 | Pruss Max | Purification of gases by biological means |
DE2020207B2 (en) * | 1970-04-25 | 1976-07-08 | Wieferig, Theodor, Dipl.-Ing., 2848 Vechta | METHOD AND DEVICE FOR CLEANING ROOM EXHAUST AIR, PREFERABLY STABILITY EXHAUST |
DE2656689C2 (en) * | 1976-12-15 | 1982-11-04 | Daimler-Benz Ag, 7000 Stuttgart | Process for the wet cleaning of exhaust air containing organic carbon compounds with biological liquid regeneration |
-
1980
- 1980-01-10 DE DE3000705A patent/DE3000705C2/en not_active Expired
- 1980-12-24 BE BE0/203325A patent/BE886868A/en not_active IP Right Cessation
-
1981
- 1981-01-05 GB GB8100145A patent/GB2067092B/en not_active Expired
- 1981-01-07 NL NL8100031A patent/NL8100031A/en not_active Application Discontinuation
- 1981-01-08 FR FR8100207A patent/FR2473548B1/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2328501A1 (en) * | 1975-10-24 | 1977-05-20 | Daimler Benz Ag | Contaminated air scrubbing process |
Non-Patent Citations (1)
Title |
---|
DAS GAZ- UND WASSERFACH, vol. 6, nr. 120, 1979, R. OLDENBOURG M]NCHEN (DE) * |
Also Published As
Publication number | Publication date |
---|---|
DE3000705C2 (en) | 1982-07-22 |
GB2067092B (en) | 1983-06-02 |
DE3000705A1 (en) | 1981-07-16 |
NL8100031A (en) | 1981-08-03 |
GB2067092A (en) | 1981-07-22 |
FR2473548B1 (en) | 1985-07-12 |
BE886868A (en) | 1981-04-16 |
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