EP1307410A1 - Composition bacterienne, procede et installation pour le pre-traitement des effluents charges en matieres grasses organiques - Google Patents
Composition bacterienne, procede et installation pour le pre-traitement des effluents charges en matieres grasses organiquesInfo
- Publication number
- EP1307410A1 EP1307410A1 EP01958200A EP01958200A EP1307410A1 EP 1307410 A1 EP1307410 A1 EP 1307410A1 EP 01958200 A EP01958200 A EP 01958200A EP 01958200 A EP01958200 A EP 01958200A EP 1307410 A1 EP1307410 A1 EP 1307410A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- effluents
- homogenization
- fat
- treated
- biological reactor
- 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- Withdrawn
Links
- 230000001580 bacterial effect Effects 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 38
- 239000000203 mixture Substances 0.000 title claims abstract description 29
- 238000009434 installation Methods 0.000 title claims abstract description 16
- 239000000126 substance Substances 0.000 title abstract description 12
- 230000003750 conditioning effect Effects 0.000 claims abstract description 34
- 238000010790 dilution Methods 0.000 claims abstract description 17
- 239000012895 dilution Substances 0.000 claims abstract description 17
- 241000588749 Klebsiella oxytoca Species 0.000 claims abstract description 11
- 230000003213 activating effect Effects 0.000 claims abstract description 5
- 239000003925 fat Substances 0.000 claims description 87
- 238000000265 homogenisation Methods 0.000 claims description 38
- 241000894006 Bacteria Species 0.000 claims description 18
- 235000013305 food Nutrition 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 13
- 239000010802 sludge Substances 0.000 claims description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 230000015556 catabolic process Effects 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 238000006731 degradation reaction Methods 0.000 claims description 10
- 241000607694 Serratia odorifera Species 0.000 claims description 7
- 239000006228 supernatant Substances 0.000 claims description 7
- 230000000593 degrading effect Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000002203 pretreatment Methods 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 230000008030 elimination Effects 0.000 claims description 3
- 238000003379 elimination reaction Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000003643 water by type Substances 0.000 claims description 3
- 241000607534 Aeromonas Species 0.000 claims 1
- 238000004064 recycling Methods 0.000 abstract description 4
- 235000013311 vegetables Nutrition 0.000 abstract description 3
- 244000005700 microbiome Species 0.000 description 5
- 238000004806 packaging method and process Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000002028 Biomass Substances 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 150000002632 lipids Chemical class 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005273 aeration Methods 0.000 description 2
- 238000006065 biodegradation reaction Methods 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 239000002609 medium Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000006213 oxygenation reaction Methods 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 102000004882 Lipase Human genes 0.000 description 1
- 108090001060 Lipase Proteins 0.000 description 1
- 239000004367 Lipase Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 125000002252 acyl group Chemical group 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002361 compost Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000002255 enzymatic effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010353 genetic engineering Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000001963 growth medium Substances 0.000 description 1
- 230000005802 health problem Effects 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000019421 lipase Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000004668 long chain fatty acids Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 235000004213 low-fat Nutrition 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P39/00—Processes involving microorganisms of different genera in the same process, simultaneously
-
- 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
- C02F3/343—Biological treatment of water, waste water, or sewage characterised by the microorganisms used for digestion of grease, fat, oil
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/20—Bacteria; Culture media therefor
- C12N1/205—Bacterial isolates
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P1/00—Preparation of compounds or compositions, not provided for in groups C12P3/00 - C12P39/00, by using microorganisms or enzymes
- C12P1/04—Preparation of compounds or compositions, not provided for in groups C12P3/00 - C12P39/00, by using microorganisms or enzymes by using bacteria
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12R—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES C12C - C12Q, RELATING TO MICROORGANISMS
- C12R2001/00—Microorganisms ; Processes using microorganisms
- C12R2001/01—Bacteria or Actinomycetales ; using bacteria or Actinomycetales
- C12R2001/22—Klebsiella
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S435/00—Chemistry: molecular biology and microbiology
- Y10S435/8215—Microorganisms
- Y10S435/822—Microorganisms using bacteria or actinomycetales
- Y10S435/828—Aerobacter
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S435/00—Chemistry: molecular biology and microbiology
- Y10S435/8215—Microorganisms
- Y10S435/822—Microorganisms using bacteria or actinomycetales
- Y10S435/852—Klebsiella
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S435/00—Chemistry: molecular biology and microbiology
- Y10S435/8215—Microorganisms
- Y10S435/822—Microorganisms using bacteria or actinomycetales
- Y10S435/88—Serratia
Definitions
- the present invention relates to the field of the treatment of effluents loaded with organic fats of animal or vegetable origin as they result from industrial processes and in particular those implemented in the food, agro-food field or in similar sectors.
- the invention relates very particularly to the field of pretreatment of said effluents and relates to a bacterial composition, a method and an installation for the pretreatment of the abovementioned effluents.
- Another solution consists in storing said fatty materials, possibly after concentration and / or specific packaging in an approved landfill for final treatment in a specialized center or an incineration unit.
- the bacteria currently used do not retain, by multiplying, the properties which were initially conferred on them during their creation by genetic manipulation. It is therefore necessary to make frequent and costly supplies of new bacteria to maintain the effectiveness of the process.
- the problem posed in the present invention therefore consists in overcoming the aforementioned drawbacks and in designing a bacterial composition, a process and an installation for the pretreatment of effluents loaded with fatty substances, more particularly effluents from the food sector or agro-food, constituting a more efficient solution (yield in terms of fat removed greater than 90%), inexpensive and more reliable over time, and making it possible to meet the most stringent regulatory requirements with regard to purified effluents discharged .
- the subject of the present invention is a bacterial composition for degrading organic fats, characterized in that it mainly comprises the bacterial strain Klebsiella Oxytoca, and the use of a bacterial composition according to the present invention for treatment or pre-treatment of effluents loaded with organic fats, in particular effluents from the food or agrifood industry.
- the present invention also relates to a process for the pre-treatment of effluents loaded with organic fats, in particular of effluents from the food or agrifood industry, characterized in that it consists in directly pre-treating said said effluents containing said fats leaving their place of production and in that it consists in carrying out the following steps:
- the present invention also relates to an installation for the pre-treatment of effluents loaded with organic fats, in particular for the implementation of the method according to the present invention, characterized in that it is mainly constituted by at least a homogenization and / or conditioning tank, at least one biological reactor with a capacity adapted to the daily flow rate of effluents to be pre-treated and to the fat concentration thereof, said biological reactor being connected to the homogenization and conditioning tank (s) by a recirculation circuit, at least one device for controlled oxygen supply disposed in the biological reactor (s) and at least one evacuation of the pre-effluents treated, for example by overflow, outside said biological reactor or reactors.
- FIG. 1 is a simplified block diagram of the method according to the invention
- FIG. 2 is a simplified top view of an installation according to the present invention.
- the bacterial composition for the degradation of organic fats is characterized in that it mainly comprises the bacterial strain Klebsiella Oxytoca. It has been unexpectedly and surprisingly found that the selected strain is particularly effective in degrading organic fats, in particular in degrading fats of animal or vegetable origin from the food or agrifood industry.
- the bacterial composition according to the present invention is characterized in that it further comprises the bacterial strain Serratia Odorifera and / or Aéromonas Hydrophyla.
- the specific association of these bacterial strains has proven to be particularly effective and economical for the degradation of the abovementioned fats.
- the strains according to the invention thus make it possible to obtain excellent yields in terms of degraded fats.
- the microorganism or microorganisms according to the invention are advantageously added in a solid lyophilized form to the culture medium contained in the fat treatment reactor.
- the average bacterial quantity contained in the composition according to the present invention is of the order of 10 16 bacteria / g of solid material. During the seeding of microorganisms, an average amount of 2.10 15 bacteria / m 3 is necessary for good efficiency of said microorganisms.
- the bacterial composition according to the present invention is characterized in that it is composed: from 60% to 90%, preferably about 80% by weight of bacteria of the Klebsiella Oxytoca strain, from 5% to 20%, preferably about 10% by weight of bacteria of the Serratia Odorifera strain, and from 5% to 20%, preferably about 10% by weight of bacteria of the Aéromonas Hydrophyla strain, the total of the three strains being equal to 100%.
- the aforementioned bacterial strains initialize the degradation of fats by cutting the ester link between glycerol and the long chains of fatty acids because they contain lipases which make it possible to operate this enzymatic cut. It follows a degradation ( ⁇ - oxidation) of fatty acids from the free carboxylic function by decarbonation of an acyl group. This last step is also carried out by these strains.
- the bacterial composition according to the present invention can be used for the treatment or the pretreatment of effluents loaded with organic fats, in particular of effluents from the food or agro-food industry.
- FIG. 1 illustrates, schematically, the method of the present invention.
- Said method is characterized in that it consists in directly pre-treating said effluents containing said fats at the outlet of their place of production and in that it consists in carrying out the following steps: - feeding a homogenization tank and / or conditioning 1 of effluents to be pre-treated, as and when they are produced and activating a recirculation circuit 2 between the latter and a biological reactor 3 so as to obtain in said biological reactor 3 a rate of dilution of the materials fat inversely proportional to the concentration of fat initially present in the effluents to be pre-treated and between 0.400 h "1 and 1.500 h " 1 for a concentration of fat contained in said effluents to be pre-treated entering the tank homogenization and / or packaging 1 of 1 g / 1, - degrade said fats in said biological reactor 3 using a compo bacterial sition according to the present invention, and - evacuate the pretreated effluents containing practically no more fat to a final treatment unit such as
- the method according to the present invention makes it possible to work directly on the flow of effluents rich in fats, that is to say without prior physico-chemical separation. Of course, it is also possible to work on fats which have undergone prior physical treatment.
- the degradation of fats by hydrolysis and oxidation is carried out thanks to the bacterial composition according to the present invention.
- the latter is particularly effective when the intake of fatty effluents is carried out continuously. That is why, the biodegradation of greases takes place directly on the raw effluent by working on the flow.
- the effectiveness of said composition depends on the dilution rate existing in the installation. This dilution rate corresponds to the ratio of the effluent flow rate to the volume of the biological reactor 3 and depends on the concentration of fat initially present in the effluents to be pretreated.
- the method according to the present invention is characterized in that the dilution ratio obtained in the biological reactor 3 is inversely proportional to the concentration of fatty substances initially present in the effluents to be pre-treated and preferably between 0.528 h "1 and 1.056 h " 1 for a concentration of fat contained in said effluents to be pre-treated entering the homogenization and / or conditioning tank 1 of 1 g / 1.
- the dilution rate being inversely proportional to the fat concentration initially present in the effluents to be pre-treated, it suffices to divide each of the limit values of the rate ranges indicated above (given for a fat concentration of 1 g / 1) by the appropriate factor to determine the ranges of dilution rates to be used for other fat concentrations.
- the dilution rate will be between 0.800 h “1 and 3,000 h “ 1 , preferably between 1.056 h “1 and 2.112 h “ 1 while for a initial fat content of, for example 4 g / 1, said dilution rate will then be between 0.100 h “1 and 0.375 h “ 1 , preferably between 0.132 h “1 and 0.264 h “ 1 , etc.
- the process in accordance with the present invention is characterized in that the concentration of fatty substances in the effluents to be pretreated entering the homogenization and / or conditioning tank 1 is less than 40 g / l, and preferably between 0.5 g / 1 and 10 g / 1.
- a too low fat concentration is likely to harm the good development (growth) or the maintenance in life of the cultures of micro-organisms therefore to the chemical performances and the economic profitability of the process, as well as a too high concentration Fat can also inhibit bacterial growth.
- correct degradation of the lipids that is to say with a yield of the order of 70 to 99%
- the dilution rate of the fats initially present in the effluents to be pretreated must be between 0.400 h "1 and 1.500 h " 1 for a concentration of fats contained in said effluents to be pre-treated entering the homogenization and / or conditioning tank 1 of 1 g / liter. Outside this range of dilution rate values, it is possible that the activity of lipid degradation decreases significantly.
- the effluents to be pre-treated can also be subjected to a prior screening operation 9 with a view to the separation of the solid materials possibly present in said effluents, this before the arrival of said effluents in the homogenization tank and / or conditioning 1.
- This measure makes it possible to limit the size of the solid particles discharged into said homogenization and / or conditioning tank 1 by trapping, for example, the solid particles having sections greater than 1 cm 2 .
- the homogenization and / or conditioning tank 1 is provided with an agitator or any other means of agitation usually used in these applications which allows good mixing and therefore good homogenization of the effluents (temperature, pH, fat concentration ).
- the effluents advantageously arrive from above in said tank 1, which makes it possible to disperse the biomass well.
- the effluents are pumped at a flow rate dependent on the aforementioned dilution rate and therefore on the fat concentration, towards the biological reactor 3.
- the latter is equipped with a device for ventilation and a pump (not shown) for activating the recirculation circuit 2 existing between said biological reactor 3 and said homogenization and / or conditioning tank 1.
- the arrival, in the homogenization and / or conditioning tank 1, of the recirculation waters discharged by the recirculation circuit 2 is carried out by a spraying device 4 by the top.
- a spraying device 4 by the top.
- the biological degradation mainly takes place in the biological reactor 3 thanks to an oxygen enrichment of the medium, for example thanks to an aeration or oxygenation device, preferably thanks to at least one device for controlled supply of oxygen 7.
- the quantity of air to be blown into the biological reactor 3 must be large enough for the development of the biomass to be able to take place but must not cause a flotation of the fats in the said biological reactor 3.
- the air intake is preferably done by a coarse bubbling.
- the pretreated effluents pass by overflow and flow by gravity into a decanter 5 where the decantable particles sediment.
- the evacuation of the pretreated effluents is done by means of a settling tank 5 on the upper part of which a floating pump 6 is provided for the elimination of supernatant and non-settling sludge.
- the decanter 5 is preferably conical at the base and the outlet of the pretreated water is also carried out by overflow.
- the average residence time of the effluents in the installation according to the invention is of the order of 24 hours.
- the supernatant and non-settling sludge can be reinjected into, or upstream from the homogenization and / or conditioning tank 1, for example via the recycling circuit 8 shown diagrammatically in the figure 1.
- the excess settling sludge is discharged.
- the present invention also relates to an installation for the pretreatment of effluents loaded with organic fats, and intended in particular, but not limited to, for the implementation of the pretreatment method described above.
- This installation is mainly constituted, as shown in Figure 2 of the accompanying drawings, by at least one homogenization and / or conditioning tank 1, at least one biological reactor 3 with a capacity adapted to the daily flow rate of effluents to be pretreated and to the fat concentration of the latter, said biological reactor 3 being connected to the homogenization and conditioning tank (s) 1 by a recirculation circuit 2, at least one controlled oxygen supply device 7 placed in the biological reactor (s) 3 and at least one discharge of the pretreated effluents, for example by overflow, outside said biological reactor (s) 3.
- the recirculation circuit 2 has not been shown in the figure 2.
- the biological reactor 3 advantageously has a conformation facilitating the extraction of residual sludge by the settling tank 5 and making it suitable for receiving at least one controlled oxygen supply device 7 which allows, by providing a supply of massive oxygen, maintain or accelerate the development and activity of biodegradation of bacteria in order to quickly reduce biological pollution to an acceptable level for the final treatment, for example in a treatment plant.
- the biological reactor 3 can be placed inside a storage tank, including the controlled oxygen supply device 7, for example a fine bubble diffuser, and be provided with conventional means. injection of chemical and / or biological products promoting purification. It is also advantageously equipped with the usual means for analyzing and controlling the quality of the effluents before and / or after their treatment, in particular their degree of fat pollution and / or their oxygenation level.
- These analysis means and the other technical devices are preferably grouped together in a technical center 10.
- Said biological reactor 3 could, for example, consist of a reactor of the type of those manufactured by the applicant.
- the residual sludge obtained after extraction of the liquid effluents comprises, on the one hand, decantable and little biodegradable suspended matter and, on the other hand, supernatant and non-decantable sludge which can be reinjected into or upstream of the tank. homogenization and / or packaging 1 by an appropriate recycling circuit 8.
- the settling sludge can be purged, with a view to its storage or spreading.
- the final sludge can also, depending on the quantities produced and the capacity of the decanter 5, remain stored in said decanter 5 for extraction and complete cleaning every 1 to 2 years, for example.
- the effluents are subjected to sieving or screening 9, possibly associated with decantation, before their discharge into the homogenization and / or packaging tank 1.
- necessary equipment known per se can complete the installation.
- the installation according to the invention is assembled in an oval tank 11, preferably made of concrete and compartmentalized in three basins, which can be buried or semi-buried, the machinery being assembled in a technical center 10 placed at - above said oval tank.
- the installation according to the invention may also comprise at least one control and management unit for the process implemented, for example of the programmable automatic controller type, which automatically controls the progress of the successive stages of treatment, by being associated with sensors and to suitable actuators.
- at least one control and management unit for the process implemented for example of the programmable automatic controller type, which automatically controls the progress of the successive stages of treatment, by being associated with sensors and to suitable actuators.
- the quantities of processed fats can be of the order of a tonne of fat per day, which corresponds to 35m 3 per day of discharges at around 5 g / 1 of fat.
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- Microbiology (AREA)
- Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Biotechnology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Biodiversity & Conservation Biology (AREA)
- Mycology (AREA)
- Hydrology & Water Resources (AREA)
- Medicinal Chemistry (AREA)
- Tropical Medicine & Parasitology (AREA)
- Virology (AREA)
- Biomedical Technology (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0010003 | 2000-07-28 | ||
FR0010003A FR2812287B1 (fr) | 2000-07-28 | 2000-07-28 | Composition bacterienne, procede et installation pour le pre-traitement des effluents charges en matieres grasses organiques |
US29004901P | 2001-05-11 | 2001-05-11 | |
US290049P | 2001-05-11 | ||
PCT/FR2001/002486 WO2002010078A1 (fr) | 2000-07-28 | 2001-07-27 | Composition bacterienne, procede et installation pour le pre-traitement des effluents charges en matieres grasses organiques |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1307410A1 true EP1307410A1 (fr) | 2003-05-07 |
Family
ID=26212558
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01958200A Withdrawn EP1307410A1 (fr) | 2000-07-28 | 2001-07-27 | Composition bacterienne, procede et installation pour le pre-traitement des effluents charges en matieres grasses organiques |
Country Status (5)
Country | Link |
---|---|
US (1) | US7045340B2 (fr) |
EP (1) | EP1307410A1 (fr) |
CN (1) | CN1237014C (fr) |
AU (1) | AU2001279930A1 (fr) |
WO (1) | WO2002010078A1 (fr) |
Families Citing this family (4)
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US6770199B1 (en) * | 2003-01-16 | 2004-08-03 | Shawn R. Taylor | Method of extracting environmental contaminants and pollutants through biomass harvestation |
JP4574185B2 (ja) * | 2004-02-17 | 2010-11-04 | キヤノン株式会社 | 撮像装置及び閃光装置の制御方法 |
EP2499099A1 (fr) * | 2009-11-09 | 2012-09-19 | Akaeno Sas | Composition bacterienne pour le traitement des effluents gras contenant du sang. |
WO2019178490A1 (fr) * | 2018-03-15 | 2019-09-19 | Evelo Biosciences, Inc. | Compositions et procédés pour traiter le cancer et l'inflammation utilisant klebsiella oxytoca |
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KR930001384B1 (ko) * | 1990-12-20 | 1993-02-27 | 롯데제과 주식회사 | 클렙시엘라 옥시토카 No. 19-1과 이를 이용한 알파 사이클로덱스트린의 제조방법 |
EP0588282B1 (fr) * | 1992-09-14 | 1999-11-17 | Haldor Dr. Aamot | Méthode de nettoyage et de rinçage de produits industriels |
GB2339435B (en) | 1998-06-20 | 2003-02-26 | Council Scient Ind Res | A reusable immobilised microbial composition useful as ready-to-use seed inoculum in BOD analysis |
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2001
- 2001-07-27 EP EP01958200A patent/EP1307410A1/fr not_active Withdrawn
- 2001-07-27 AU AU2001279930A patent/AU2001279930A1/en not_active Abandoned
- 2001-07-27 CN CNB018135064A patent/CN1237014C/zh not_active Expired - Fee Related
- 2001-07-27 WO PCT/FR2001/002486 patent/WO2002010078A1/fr active Application Filing
- 2001-07-27 US US10/088,596 patent/US7045340B2/en not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
---|---|
US20020197707A1 (en) | 2002-12-26 |
WO2002010078A1 (fr) | 2002-02-07 |
CN1444545A (zh) | 2003-09-24 |
CN1237014C (zh) | 2006-01-18 |
US7045340B2 (en) | 2006-05-16 |
AU2001279930A1 (en) | 2002-02-13 |
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