WO1997033704A1 - Procede de traitement in situ des sediments aquatiques et notamment des vases - Google Patents
Procede de traitement in situ des sediments aquatiques et notamment des vases Download PDFInfo
- Publication number
- WO1997033704A1 WO1997033704A1 PCT/FR1996/000380 FR9600380W WO9733704A1 WO 1997033704 A1 WO1997033704 A1 WO 1997033704A1 FR 9600380 W FR9600380 W FR 9600380W WO 9733704 A1 WO9733704 A1 WO 9733704A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bacteria
- treatment
- mechanical
- sediments
- housing
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/02—Stream regulation, e.g. breaking up subaqueous rock, cleaning the beds of waterways, directing the water flow
- E02B3/023—Removing sediments
-
- 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
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
Definitions
- the present invention relates to a sediment treatment process "in situ", usable in sites where the usual techniques are difficult to apply for reasons of access, depth or logistics.
- the techniques currently used to reduce the thickness of vases or sediments rich in organic matter are mainly mechanical extraction techniques such as dredging, suction or shovel for areas requiring the removal of sediment followed by their unloading in a other site, and means of crushing the funds, such as rotary brushes, harrows and other agricultural machinery, in areas where suspended materials can be carried by the current.
- mechanical extraction techniques such as dredging, suction or shovel for areas requiring the removal of sediment followed by their unloading in a other site, and means of crushing the funds, such as rotary brushes, harrows and other agricultural machinery, in areas where suspended materials can be carried by the current.
- the process presented is a new way in the treatment of sediments, by the elaboration, "in situ", of the most favorable conditions for the digestion and the mineralization of the organic matter of se - diments by microorganisms (bacteria , yeasts, protozoa ..) and this, without having to remove these materials, especially in areas that are not crossed by currents.
- This process may. be used for the de-silting of poldérisatio ⁇ areas, beaches, channels, ports, fish ponds, rivers, or any area contaminated by pollutants such as petroleum, industrial sludge ...
- Vases are mainly made up of agglomerates of organic matter molecules, trapping water molecules representing 70 to 90% of the total mass, as well as salts (phospates, mineral nitrogen, etc.) of heavy metals and materials. exogenous (pollen, small, sand, cellulosic fibers ).
- the vases are particularly impermeable to exchanges with the outside, in particular with regard to oxygen transfers.
- the degradation and mineralization of the organic matter of these materials is mainly due to the activity of anaerobic bacteria, by a particularly slow process, aerobic degradation only taking place on the "water / surface interface "sediments.
- the presented process mainly aims, through its complementary steps, mechanical, chemical, biological, to transform these materials into a "conditioned mud and inoculated in micro- organisms "presenting the best physicochemical characteristics to be digested by selected and indigenous microorganisms more particularly aerobic.
- Aerobic digestion of organic matter releases much more energy, generates less toxic products, and this by a faster process than anaerobic digestion.
- the process consists of combining two to three complementary steps, (mechanical, chemical and biological or mechanical and chemical or mechanical and biological), "in situ", dry or in full water, to transform the said sediments in "micronized sludge, conditioned and inoculated into micro-organisms", in order to allow the organic matter which composes them to be digested and mineralized by selected and indigenous micro-organisms.
- steps mechanical, chemical and biological or mechanical and chemical or mechanical and biological
- "in situ” dry or in full water
- the aerobic route air, or oxygen in the form of microbubbles or dissolved, are transported by a pipe of water under pressure and injected into the mud resulting from the mechanical step.
- the purpose of the mechanical stage is to break the cohesion of said materials, to reduce them into fine particles, to allow better contact and mixing with the chemical and biological products used jointly.
- the mechanical stage is characterized by the use of mechanical crushing means of the harrow type, rotary rake (Rota-vator). rotary blade (giro-crusher), water jet, water jet harrows (hydro-jet booms), rotary brush and, by extension, any means (21) allowing to transform, "in situ” and on a pre-established depth established, the sediments in "micronized sludge", ie reduced to fine particles mixed with water.
- the result of the mechanical step is a "micronized mud" making the molecules of organic matter directly accessible to the chemical and biological actions of the process.
- the mechanical step allows the evacuation of part of the so-called "free” water trapped in the frames of organic molecules.
- the devices used for this purpose can be covered with a casing (10) to optimize ia ⁇ ritation of the vases, mixing with the treatment products, flocculation, limiting the dispersion of organic matter and treatment products and allow pre-oxygenation with oxygen from the surrounding water.
- the process enhancement devices are towed by floating or land structures adapted to the areas to be treated (draft, lift %), at speeds that can exceed 20 kilometers per hour.
- the treatment is carried out on a strip the width of the mechanical means and on a variable depth depending on the target. (Up to one meter with jets under pressure, on average from 1 to 10 centimeters for other mechanical means). These depths are not limiting.
- the chemical step in addition to its direct action of degrading the materials to be treated, has principally - payment for the purpose of perfecting and completing the action of the mechanical step by transforming the "micronized sludge” obtained by the mechanical step into “sludge conditioned ", capable of being colonized and digested more particularly by aerobic microorganisms.
- conditioned sludge are obtained by adding to "micronized sludge", products promoting the digestion of organic matter by the microorganisms targeted to digest them.
- micro-organisms will have an action all the more effective on organic matter, that they will find the latter in the form of the finest particles possible, that they will find micro-supports to fix themselves, an adequate Ph, of the oxygen, as well as the components essential to their activity, missing on the site.
- the biological stage is the end of the preceding stages.
- Biological engineering allows us to cultivate and inoculate strains of microorganisms (bacteria, yeasts ...) most favorable to the digestion of organic matter and its mineralization.
- bacteria microorganisms
- yeasts a microorganisms
- hydraulic harrow allows deep injection of selected or native bacteria (entrained by the jet), as well as the compounds necessary for their development (oxygen and other compounds according to analysis) and to obtain digestion organic matter in the very mass of the material to be treated, which represents a less harmful solution for the environment- me ⁇ t.
- the biological stage of the process consists in injecting and mixing selected strains of microorganisms in the "conditioned sludge” and obtaining, in this way, "conditioned and inoculated sludge”.
- the mechanical step will be combined with the biological step, by mixing selected or native microorganisms in the "sludge micronized "to obtain” micronized and inoculated sludge ".
- FIG. 1 is a schematic side view, in section, of the device (1a) for enhancing the process.
- Figure 2 is an apical view of the device (1a) for enhancing the process.
- FIG. 3 is a schematic view of the device for enhancing the process and of its relationships with the traction unit.
- Figure 4 is a schematic side view, in section, of the device (1b) for enhancing the process.
- the device for implementing the method consists of a sliding machine, of the sled type, mounted on pads (9), provided with a frame (8), on which are fixed mechanical means for tritura ⁇ tion of the sediments ( 22), means for distributing chemical treatment products and means for distributing microorganisms (23, 28) and a casing (10) including the chassis, open on its rear bottom part (18) and on the all of its lower part.
- the device for implementing the method (1a ) preferentially use as mechanical means of crushing, means for injecting pressurized water comprising nozzles oriented towards the ground.
- Traction will be carried out by land (tractor, bull-dozer, etc.) or floating means (boat, cabin, etc.), (2), which will be coupled to the device (1 a) by two rings (11 ) fixed to the frame (8).
- the device (1a) may be provided with a hydraulic lifting means.
- the metering devices for treatment products and microorganisms (3) On these traction means or on any structure pulled by them, are arranged the metering devices for treatment products and microorganisms (3), the pump (4) for supplying pressurized water to the device (1a), its outlet water (5) and its strainer (6) as well as the production and metering systems of air or oxygen (25).
- the treatment products including oxygen and possibly micro-organisms
- the products and micro-organisms to be injected will be distributed by the dosers (3) according to a part of the volume of materials to be treated, (Volume defined by the product of the traction speed, the width treated mechanically and the depth of treatment ) and on the other hand by their physico-chemical composition.
- the device (1a) consists of a rigid frame (8), mounted on pads (9), ie treatment being done under the casing (10), between the pads over a non-limiting width of one to two meters.
- the spray bars (12) are fixed, so that the outlet (14) of each nozzle (13) can be positioned in or above the vessel to be treated.
- the jet ramps parallel to the ground, are generally positioned perpendicular to the direction of traction so that the treatment is carried out uniformly over the entire width of the device.
- They are formed of hollow tubes of variable diameter, plugged at the ends, (in general from 10 to 200 millimeters in diameter) on which the nozzles are fixed or screwed, which are made of rigid hollow tube of internal diameter adapted to the pressure (2 at 20 millimeters) separated from each other by 50 to 150 millimeters.
- the angle of attack of the jets on the ground can be changed by the rotation of the jets ramps at the level of the screw connections and thoracic joints (17) to the internal supply pipe (16) of the jets ramps. pressure.
- the chassis is enclosed by a casing (10), provided with an opening (18) over the entire width of the lower part of its rear wall and over a height of approximately 10 centimeters.
- the external supply pipe (7) is connected by a fire engine or screw connection (15) to the internal supply circuit (16) of the hydro-jet ramps (12).
- a microbubble system or a Ve ⁇ turi system Air-Water or Oxygen-water
- the device (1a) is characterized in that the distribution of the chemical treatment products and of the microorganisms is done by means of mechanical means of trituration by injection of water under pressure, at know by the nozzles (13) of the pressurized jet ramp (12).
- the materials used for the construction of the process enhancement devices are chosen according to the criteria of the pump pressure (4), impact fractures, corrosion and the necessary flexibility.
- Flexible pressure hose for water and air, in reinforced rubber, in chloride polyvinyl reinforced with a spiral if the chassis, the casing, the water circuits of the device for implementing the process, will be used rigid materials such as steel, galvanized iron, composite materials ...
- the device In the case of treatment of a vase at a shallow depth, the device is characterized in that the mechanical means of crushing are of harrow, giro-crusher, strawberry, rotavator, rotary brush type or any mechanical means of crushing of sediment (21), activated if necessary, by a drive motor group (22).
- the depth of attack of the mechanical means is previously set.
- the device (1b) is characterized in that the distribution of the chemical treatment products and of the microorganisms is done by means of mechanical means for injecting water under pressure.
- the chemical treatment products and the microorganisms are conveyed from the latter to the treatment device (1) by a flexible external pipe (24) connected by a screw connection (15 ) to the treatment device (1), then injected under the casing (10), at the head of the device (1) via a ramp (23).
- the outputs of the ramp (28), holes or nozzles of 1 to 5 millimeters in diameter, separated from 1 to 5 centimeters from each other and arranged in one or more lines along the ramp (28) are oriented towards the ground , towards the point of attack on the ground of the mechanical means used. These dimensions are indicative.
- the chassis, the skids and the casing are identical to the device for implementing the method (1a), with the adaptations close to the drive motor group (22) of the mechanical crushing means.
- the standard dimensions between pads are 100 centimeters wide, 150 centimeters long and 50 centimeters high.
- the application of the process will be done by adapting the process enhancement devices to site conditions.
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Biotechnology (AREA)
- Civil Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Structural Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Mycology (AREA)
- Ocean & Marine Engineering (AREA)
- Treatment Of Sludge (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9410991A FR2724376B1 (fr) | 1994-09-09 | 1994-09-09 | Procede de traitement "in situ" des sediments et notamment des vases |
EP96906815A EP0824382A1 (fr) | 1996-03-12 | 1996-03-12 | Procede de traitement in situ des sediments aquatiques et notamment des vases |
PCT/FR1996/000380 WO1997033704A1 (fr) | 1994-09-09 | 1996-03-12 | Procede de traitement in situ des sediments aquatiques et notamment des vases |
AU50081/96A AU5008196A (en) | 1996-03-12 | 1996-03-12 | Method for the in situ treatment of aquatic sediment, particularly sludge |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9410991A FR2724376B1 (fr) | 1994-09-09 | 1994-09-09 | Procede de traitement "in situ" des sediments et notamment des vases |
PCT/FR1996/000380 WO1997033704A1 (fr) | 1994-09-09 | 1996-03-12 | Procede de traitement in situ des sediments aquatiques et notamment des vases |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997033704A1 true WO1997033704A1 (fr) | 1997-09-18 |
Family
ID=26231401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1996/000380 WO1997033704A1 (fr) | 1994-09-09 | 1996-03-12 | Procede de traitement in situ des sediments aquatiques et notamment des vases |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR2724376B1 (fr) |
WO (1) | WO1997033704A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004005216A1 (de) * | 2004-02-03 | 2005-09-01 | Bauer Und Mourik Umwelttechnik Gmbh & Co. | Mobile Schlammfördereinrichtung |
CN104261492A (zh) * | 2004-08-13 | 2015-01-07 | 托马斯·克里扎克 | 用于修复水体的底部的受污染的沉积物的装置和方法 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2724376B1 (fr) * | 1994-09-09 | 1996-10-31 | Bordes Sue Dominique | Procede de traitement "in situ" des sediments et notamment des vases |
FR2785900B1 (fr) * | 1998-11-12 | 2000-12-15 | Sue Dominique Bordes | Procede de traitement "in situ" et en pleine eau des sediments organiques |
FR2793483B1 (fr) * | 1999-05-10 | 2001-06-29 | Amb Assainissement Microbiolog | Dispositif d'injection de micro-organismes liquides dans l'eau |
FR2860532B1 (fr) * | 2003-10-03 | 2007-04-27 | Michel Poteur | Dispositif pour le devasement sans pollution ni consommation d'eau notables |
FR3009003B1 (fr) * | 2013-07-25 | 2017-05-12 | Gilles Bonamy | Dispositif de serfouissage des sediments |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3412862A (en) * | 1967-09-07 | 1968-11-26 | Merle P. Chaplin | Method and apparatus for cleaning areas overlain by a water body |
US3988843A (en) * | 1974-12-11 | 1976-11-02 | The International Nickel Company, Inc. | Mining transition chamber |
FR2565611A1 (fr) * | 1984-06-08 | 1985-12-13 | Asstech Ind Sa | Dispositif de suceuse rotobroyeuse pour nettoyage de fonds sous-marins |
DE3621313A1 (de) * | 1986-06-25 | 1988-01-14 | Chem Fab Dr Worbs Kg | Verfahren zum mikrobiellen abbau von kontaminationen |
EP0257317A1 (fr) * | 1986-08-06 | 1988-03-02 | Harry Stallzus | Dispositif pour le traitement du fond des plans d'eau |
EP0369534A1 (fr) * | 1988-11-14 | 1990-05-23 | Hollandsche Beton Groep N.V. | Procédé de traitement de sédiment |
FR2724376A1 (fr) * | 1994-09-09 | 1996-03-15 | Bordes Sue Dominique | Procede de traitement "in situ" des sediments et notamment des vases |
-
1994
- 1994-09-09 FR FR9410991A patent/FR2724376B1/fr not_active Expired - Fee Related
-
1996
- 1996-03-12 WO PCT/FR1996/000380 patent/WO1997033704A1/fr not_active Application Discontinuation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3412862A (en) * | 1967-09-07 | 1968-11-26 | Merle P. Chaplin | Method and apparatus for cleaning areas overlain by a water body |
US3988843A (en) * | 1974-12-11 | 1976-11-02 | The International Nickel Company, Inc. | Mining transition chamber |
FR2565611A1 (fr) * | 1984-06-08 | 1985-12-13 | Asstech Ind Sa | Dispositif de suceuse rotobroyeuse pour nettoyage de fonds sous-marins |
DE3621313A1 (de) * | 1986-06-25 | 1988-01-14 | Chem Fab Dr Worbs Kg | Verfahren zum mikrobiellen abbau von kontaminationen |
EP0257317A1 (fr) * | 1986-08-06 | 1988-03-02 | Harry Stallzus | Dispositif pour le traitement du fond des plans d'eau |
EP0369534A1 (fr) * | 1988-11-14 | 1990-05-23 | Hollandsche Beton Groep N.V. | Procédé de traitement de sédiment |
FR2724376A1 (fr) * | 1994-09-09 | 1996-03-15 | Bordes Sue Dominique | Procede de traitement "in situ" des sediments et notamment des vases |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004005216A1 (de) * | 2004-02-03 | 2005-09-01 | Bauer Und Mourik Umwelttechnik Gmbh & Co. | Mobile Schlammfördereinrichtung |
DE102004005216B4 (de) * | 2004-02-03 | 2006-05-11 | Bauer Und Mourik Umwelttechnik Gmbh & Co. | Mobile Schlammfördereinrichtung |
CN104261492A (zh) * | 2004-08-13 | 2015-01-07 | 托马斯·克里扎克 | 用于修复水体的底部的受污染的沉积物的装置和方法 |
Also Published As
Publication number | Publication date |
---|---|
FR2724376A1 (fr) | 1996-03-15 |
FR2724376B1 (fr) | 1996-10-31 |
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