WO2006061515A1 - Apparatus for nesting microorganisms in a cellular granular material for treating contaminated soils and/or wastewater - Google Patents
Apparatus for nesting microorganisms in a cellular granular material for treating contaminated soils and/or wastewater Download PDFInfo
- Publication number
- WO2006061515A1 WO2006061515A1 PCT/FR2005/003069 FR2005003069W WO2006061515A1 WO 2006061515 A1 WO2006061515 A1 WO 2006061515A1 FR 2005003069 W FR2005003069 W FR 2005003069W WO 2006061515 A1 WO2006061515 A1 WO 2006061515A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- microorganisms
- vessel
- tank
- cannula
- granulate
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/10—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic in stationary drums or troughs, provided with kneading or mixing appliances
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/116—Stirrers shaped as cylinders, balls or rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/84—Mixing plants with mixing receptacles receiving material dispensed from several component receptacles, e.g. paint tins
-
- 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
- C02F2003/001—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
Definitions
- the invention is in the field of the treatment of contaminated soils and / or wastewater, and more particularly of the field of such treatment using a treating product composed of a cellular granulate constituting a substrate for microorganisms, such as bacteria and / or enzymes. It relates to an apparatus for the preparation of such a treatment product.
- a treating product consisting of a mass of granulate carrying microorganisms.
- the granulate is honeycombed to form a substrate for the development of microorganisms by nesting inside the cells.
- a granulate is for example a granulate of natural minerals, such as zeolite, lithotanium, bentonite, kaolin or other similar material offering niches for the development of microorganisms.
- the latter which constitute the active agents for the treatment of soil and / or wastewater, include bacteria of various active strains and / or enzymes.
- the alveoli of the substrate being used to allow the nesting of bacteria for their development, the problem is to solve to promote this nesting during the preparation of the treating product.
- the quality of this nesting depends on the development capacity of the bacteria when the treatment product is spread over the area to be treated. More particularly, the strains of microorganisms being in plurality, it is essential that each of these strains is properly nidified, to avoid insufficient concentration or even disappearance of the weakest strains.
- the amount of microorganisms contained in the treatment product remains low compared to the extent of the area to be treated. It also shows that it is necessary to promote the nesting of microorganisms to increase their concentration.
- since the amount of microorganisms tends to decrease after spreading of the treatment product due to the toxicity of the soil and / or the wastewater to be treated, it is still desirable to promote the nesting concentration of these microorganisms in the substrate.
- the object of the present invention is to provide an apparatus for the preparation of a treatment product for the treatment of contaminated soils and / or wastewater, this treating product being composed of a honeycomb granulate forming a nesting substrate for microorganisms. It is more particularly the object of the present invention to provide such an apparatus which makes it possible to obtain a treatment product in which the nesting and the homogeneity of the distribution of the microorganisms in the substrate are favored, which tends to limit the duration of preparation of the treatment product obtained, and which avoids a loss of microorganisms to be mixed with the granulate.
- the apparatus of the present invention is an apparatus for the preparation of a treating product for the treatment of contaminated soils and / or wastewater.
- This treating product is composed of a honeycomb granulate forming a nesting substrate for microorganisms.
- such an apparatus is mainly recognizable in that it comprises:
- Such a preparation of the treating product makes it possible to promote the homogenous nesting of the microorganisms, by optimizing the number of microorganisms nidifies with regard to the number of microorganisms mixed with the substrate. It will be noted that the microorganisms which are not nidified after an operation of preparation of the treating product, are likely to be recovered at the bottom of the tank for later use.
- the treatment product obtained by means of the apparatus of the invention provides a suitable nesting of the microorganisms, while respecting the development of each of the introduced strains, which makes it possible to increase the degradation of the pollutants of the zones to be treated thanks to a development of films bacteria and the rapid formation of a floc.
- the cannula is in particular immersed inside the tank and is in communication via an intake duct with at least one tank of microorganisms.
- This reservoir is preferably equipped with means for discharging under pressure microorganisms out of the reservoir to the intake duct. It will be understood that it is preferred to provide the apparatus of the invention with a plurality of reservoirs containing a respective and differentiated strain of microorganisms, bacteria and / or enzyme in particular.
- the branch is particularly plunging inside the tank and has at its proximal end a drive shaft.
- the latter emerges out of the tank and is connected to a motor member external to the tank.
- This drive shaft is extended at its distal end, towards the inside of the tank, by at least one stirring arm.
- the branch comprises at its distal end a plurality of stirring arms, which are preferably radially distributed on the branch, preferably along the latter.
- the stirring arms are preferably equipped with a deflector for forming a groove inside the substrate during their rotation, to facilitate the flow of microorganisms in the substrate.
- This deflector is for example formed of a dome disposed at the distal end of the brewing arms, or is formed of at least one helical wing formed along the brewing arms.
- the tank is in particular a sealed tank, which is advantageously provided with a closable inlet hopper granulate.
- the cannula is for example formed of an open conduit at its end, or alternatively and preferably consists of a microperforated conduit.
- the cannula and the branch constitute the same organ. More particularly, this member consists of a perforated conduit plunging inside the vessel and emerging out of the latter for its rotational drive by the drive member and for its junction with the intake duct.
- This perforated duct is advantageously subdivided into several brewing and dispersing arms of the microorganisms admitted into the duct.
- an apparatus is intended for the preparation of a treatment product for polluted soils and / or wastewater.
- This product is mainly composed of a granulate, forming nesting substrate for microorganisms.
- This apparatus comprises a sealed tank 1 intended to receive the granulate and microorganisms. These are stored in respective reserves 2, which are connected via an intake duct 3, preferably flexible, to a cannula 4 plunging inside the tank 1.
- the reserves 2 of microorganisms are equipped means 5 for evacuating the microorganisms to the inlet duct 3 under pressure.
- the cannula 4 is organized in the stirring branch of the granulate and microorganisms contained inside the vessel 1.
- the proximal end of the cannula 4 comprises a drive shaft 6 in rotation, in relation with an external drive member 7 1.
- the distal end of the cannula 4 comprises a plurality of stirring arms 8, preferably bent, which are radially distributed along the cannula 4.
- the latter is also connected to the flexible conduit 3 via a rotating connector 12 or similar member in particular.
- the brewing arms 8 are equipped at their distal end with a dome 13 forming a deflector, for the purpose of forming a groove in the mass of the substrate to facilitate the flow of microorganisms.
- the vessel 1 is sealed and is provided at its top with a hopper 9 closable, in particular by a lid 10 or the like, for the admission of the granulate.
- a trap 11 is advantageously provided at the base of the tank 1 for the evacuation of the prepared treatment product.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0412973A FR2878765B1 (en) | 2004-12-07 | 2004-12-07 | APPARATUS FOR THE NIDIFICATION OF MICROORGANISMS IN AN ALVEOLE GRANULATE FOR THE TREATMENT OF SOIL SOIL AND / OR WASTEWATER |
FR0412973 | 2004-12-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006061515A1 true WO2006061515A1 (en) | 2006-06-15 |
Family
ID=34952298
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2005/003069 WO2006061515A1 (en) | 2004-12-07 | 2005-12-07 | Apparatus for nesting microorganisms in a cellular granular material for treating contaminated soils and/or wastewater |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR2878765B1 (en) |
WO (1) | WO2006061515A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3339764A1 (en) * | 1983-11-03 | 1985-05-23 | B. Braun Melsungen Ag, 3508 Melsungen | DEVICE FOR PRODUCING BIOCATALYST BEADS |
JPS6269987A (en) * | 1985-09-20 | 1987-03-31 | Hitachi Plant Eng & Constr Co Ltd | Production unit for pellet of immobilized microorganism |
US4800160A (en) * | 1985-08-06 | 1989-01-24 | Mitsui Toatsu Chemical, Incorporated | Process and apparatus for producing immobilized enzyme granules |
DE4243627A1 (en) * | 1992-12-22 | 1994-06-23 | Leca Deutschland Gmbh | Open pored mineral bulk material carrying immobilised microorganisms |
DE20214291U1 (en) * | 2002-09-14 | 2003-01-02 | Romaco Ag Frymakoruma Rheinfel | Mixer assembly, for viscous substances, has venturi mixer paddles on vertical rotating shaft |
-
2004
- 2004-12-07 FR FR0412973A patent/FR2878765B1/en not_active Expired - Fee Related
-
2005
- 2005-12-07 WO PCT/FR2005/003069 patent/WO2006061515A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3339764A1 (en) * | 1983-11-03 | 1985-05-23 | B. Braun Melsungen Ag, 3508 Melsungen | DEVICE FOR PRODUCING BIOCATALYST BEADS |
US4800160A (en) * | 1985-08-06 | 1989-01-24 | Mitsui Toatsu Chemical, Incorporated | Process and apparatus for producing immobilized enzyme granules |
JPS6269987A (en) * | 1985-09-20 | 1987-03-31 | Hitachi Plant Eng & Constr Co Ltd | Production unit for pellet of immobilized microorganism |
DE4243627A1 (en) * | 1992-12-22 | 1994-06-23 | Leca Deutschland Gmbh | Open pored mineral bulk material carrying immobilised microorganisms |
DE20214291U1 (en) * | 2002-09-14 | 2003-01-02 | Romaco Ag Frymakoruma Rheinfel | Mixer assembly, for viscous substances, has venturi mixer paddles on vertical rotating shaft |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 011, no. 267 (C - 443) 28 August 1987 (1987-08-28) * |
Also Published As
Publication number | Publication date |
---|---|
FR2878765A1 (en) | 2006-06-09 |
FR2878765B1 (en) | 2008-01-11 |
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