EP1976984A1

EP1976984A1 - Environmental biotreatment product

Info

Publication number: EP1976984A1
Application number: EP07718073A
Authority: EP
Inventors: Yves Lebesgue; Antoine Du Pontavice; Marie Jumentier
Original assignee: Novaluz
Current assignee: Novaluz
Priority date: 2006-01-20
Filing date: 2007-01-18
Publication date: 2008-10-08
Also published as: WO2007083023A1; FR2896512A1; FR2896512B1

Abstract

The invention relates to a biodegradable product for environmental biotreatment, comprising at least one fibrous organic substrate, a culture of microorganisms containing bacteria, mushrooms or fungi and/or yeasts which are aerobic, a feeder medium made up of at least one amino acid and polysaccharides and mineral salts. The invention also relates to the process for producing the product and to its uses in the biotreatment of polluted soils, water and air, and in composting.

Description

PRODUCT FOR ENVIRONMENTAL BIOTRATING

FIELD OF THE INVENTION

The invention relates to a biodegradable product for environmental biotreatment.

It is well known that in terms of environmental treatment, physicochemical means are not always sufficient. The selection, cultivation, conditioning and targeted use of bacterial strains, whose exploitation is organized to treat environmental pollution that is difficult to manage by physicochemical means, have long been put in place. These situations of applications can be very diverse and they imply, moreover, to integrate the constraints of the conservation and the reactivation of bacteria stored under appropriate conditions, in order to allow these bacteria to recover their full effectiveness. action, the moment comes.

Pollution and environmental damage for which ^'biological treatments are needed are very varied: it may be the destruction of organic pollutants such as hydrocarbons, destruction of inorganic components related to the removal of odors and others in the case of accelerated composting of organic waste from household waste or green waste or the treatment of pollution contained in waste water, and, more generally, the treatment of lipid, carbohydrate or protic compounds.

»Aft ₈

US CONFIRMAT! * STATE OF THE ART

Different techniques of conditioning and implementation of selected bacterial colonies, which can best be used for environmental pollution treatment requirements, have been envisaged and practiced: these techniques already envisaged may cover "in situ" production concepts. liquid media containing bacterial strains followed by their implementation by sprinkling the polluted environment or cover concepts of cartridges containing bacteria, a true tank for packaging and preservation of bacterial strains awaiting their use.

Other means have been used for the packaging and preservation of bacterial strains such as, for example, inert solid supports or organic active supports impregnated with said bacterial strains or else encapsulation techniques for packaging in confined spaces. bacterial colonies.

All these techniques of conditioning and implementation of strains or bacterial colonies have actually been practiced. However, these different techniques find their limits, either with respect to the conditions of impregnation of the active supports, or with respect to the optimized conditioning conditions, or with respect to the conditions of use according to the bacterial attack strategies to be considered according to the type of treatment. pollution to be treated. Various prior documents deal with chemical compositions in solid form that are intended to release organic substances and inorganic substances in a medium to be treated, usually a soil. These solid compositions may be in the form of granules, briquettes, capsules, powders or any other form capable of being stored and then easily dispersed in the medium to be treated.

A first document (US 6,620,611) describes a substrate impregnated with an active composition intended to diffuse over time organic compounds and complex inorganic phosphates for the purpose of biotreatment of a soil.

Another document (US 6,617,150) describes a biodegradable composition comprising a material incorporating plant fibers and enzymes for the biotreatment of polluted soil.

Another document (US Pat. No. 6,423,531) is more specifically descriptive of a composition comprising anaerobic bacterial strains used for the treatment of soils with a view to restoring their biological state.

Another document (US 6,403,364) relates to a method of treating polluted soil by contaminants, using anaerobic bacteria, this method being applicable in particular in sediments containing water or in other difficult environments. A patent application (US 20020090697) describes a solid chemical composition with a degradation and slow diffusion effect, as well as a method for the biotreatment of soils with a view to their restoration by techniques using anaerobic bacteria.

All these. documents describe biodegradable compositions, containing bacterial colonies, allowing these bacteria to survive and then develop in the medium to be treated, but all these compositions use anaerobic bacteria.

Finally, a recent document (US 6,251,826) describes a composition for a soil treatment application, with the addition of compost to promote good plant growth without the use of pesticides. The composition uses a crushed alfalfa, a wetting agent, a source of calcium, and a humus, in the form of granules. But this composition does not contain bacterial strains. There is no bacterial selection, and the purpose of this composition is the enrichment of soil and not the treatment of a specific environmental pollution.

OBJECT OF THE INVENTION

Thus, the closest state of the art deals with the use of anaerobic bacteria for particular situations of pollution or bacterial enrichment of the soil. However, there are situations where biological treatments with aerobic bacteria are required. Therefore, biological treatment products must integrate packaging capable of assuming all the constraints specific to the storage and revival of these aerobic bacteria, while ensuring their dispersion in the medium to be treated, to ensure, when the time comes, a controlled biodegradation.

Therefore, the object of the invention, to meet unmet needs, is to create a biodegradable product for environmental biotreatment whose functions are respectively: (i) to contain and / or serve as a support for microorganisms aerobic, in particular to aerobic bacteria, yeasts and / or fungi and fungi chosen very specifically in relation to the end use that will be made of them,

(ii) to provide the necessary nutrients for the growth of microorganisms when the time comes, (iii) to ensure rapid water uptake into the receiving medium ^; (iv) to allow the diffusion into the receiving medium of aerobic microorganisms while by ensuring their growth at the place of their programmed bioprocessing action,

(v) to biodegrade in a controlled manner when the conditions of use are satisfied, in particular with sufficient moisture.

More particularly, the object of the invention is ^a biodegradable product for environmental biotreatment, to. controlled biodegradability, in powder form, wherein the microorganisms inoculated are aerobic microorganisms very specifically selected for action given in relation to a known environment to be degraded by these microorganisms. The environmental bioprocessing product combines the conditioning, carrier and nutrient functions for aerobic microorganisms, and integrates its own controlled destruction, releasing aerobic microorganisms into the environment to be treated by specifically biodegradable behavior. designed.

SUMMARY OF THE INVENTION

According to the invention, the powder biodegradable product for environmental biotreatment consists of: a) at least one family of aerobic microorganisms, in their culture medium, adapted to the treatment of the pollutants to be treated, b) biochemical compounds favorable to the growth of the microorganisms previously selected, is characterized in that it is furthermore composed of c) a fibrous organic support derived from natural lignocellulosic components, having the capacity to absorb and desorb an aqueous medium, d) mineral salts necessary for the development of aerobic microorganisms, and possibly other additives.

DETAILED DESCRIPTION OF THE INVENTION

Therefore, the biodegradable product powder for environmental biotreatment consists of a fibrous organic support comprising at least one crushed plant material, at least one family of microorganisms. aerobic, in their culture medium, biochemical compounds favorable to the growth of microorganisms constituting a nutrient supply and mineral salts and possibly other additives.

In the context of the application of biotreatment, in particular bioprocessing for environmental purposes, using microorganisms such as bacteria, fungi and fungi and / or aerobic yeasts, it is essential to ensure the presence of oxygen for said microorganisms. aerobes contained in or fixed on the organic biodegradable packaging support of these microorganisms. It is the reason for which this conditioning has been chosen in the form of a pulverulent fibrous support whose design and physical form allow the transfer of oxygen and a rapid water uptake, due to the hydrophilic character of the material constituting the packaging support.

Indeed, any carrier, fibrous organic packaging for receiving aerobic microorganisms must be able to have different characteristics, in particular a good oxygen permeability or a sufficient oxygen reserve and good. biodegradability activated by the presence of moisture.

According to the invention, the organic fibrous conditioning support having the above-mentioned qualities consists of at least one plant material derived from lignocellulosic, non-starchy natural components having the capacity for absorption and desorption of an aqueous medium. The said material derived from natural components Non-starch cellulosics may be a crushed fibrous plant and be in the form of a pulverulent crumb.

The use of plant materials derived from non-starch ligno-cellulosic natural components as the main component of the biodegradable fibrous organic support appeared to be essential, the fibrous plant material providing mechanical structure, open porosity and to a certain extent nutrients. to aerobic microorganisms supported.

The natural, non-starch lignocellulosic components are selected from the group of plants including alfalfa, beet pulp, lupine, soybean, sorghum, faba bean legumes, hemp, flax residues.

The natural fibrous lignocellulosic components are both a structuring element of the product according to the invention, as can any plant fiber, but also a nutrient element for aerobic microorganisms.

However, the non-starch fibrous lignocellulosic natural components are preferably chosen from the group formed by alfalfa and beet pulp, insofar as they possess certain particular characteristics with respect to other plant compounds, i.e. say:

that they promote the physisorption of aerobic microorganisms on the surface of their particles. fibrous by allowing cation exchange surface responsible for the formation of glycoprotein complexes, they have a fibrosity ensuring good open porosity of the mixture, they have a rapid water uptake which ensures dissolution of their organic material in the medium receptor, that they do not contain starch, which makes it possible to avoid so-called bulking phenomena, ie of swelling, by modification of viscosity and of thixotropy, preventing decantation by gelling in the wastewater treatment. they are sources of proteins, amino acids, polysaccharides necessary for the development of microorganisms and, in particular, they are sources of slow nitrogen present in an amine form, used as and when aerobic microorganisms.

Thus, the organic fibrous carrier for conditioning aerobic microorganisms also serves as a nutrient for these microorganisms at the moment when they will be released in order to act on the medium to be treated.

The fibrous organic support is pretreated by physical means such as drying, dehydration, grinding, compacting, pressing. He is introduced to. 60% to 98% by weight and preferably 75% to 90% by weight of the biodegradable product of environmental bioprocessing.

According to the invention, the biodegradable product for environmental biotreatment comprises at least one family of aerobic microorganisms in their culture medium, that is to say in aqueous suspension in a nutrient medium.

The aerobic microorganisms used according to the invention and therefore present in the product _/ that is to say contained in or present on the organic fibrous support, are aerobic strains, such as bacteria, yeasts, fungi and / or fungi from the nitrogen and carbon cycle. They can be from the same family or belong to different families.

The culture of aerobic strains comprising bacteria, fungi and fungi and / or yeasts is carried out in an aqueous medium at a concentration varying, for example, between 10 ⁷ and 10 ¹⁰ colony-forming units per milliliter of aqueous suspension.

The microorganisms are introduced in the form of an aqueous suspension, which is their culture medium, and are mixed with the organic fibrous support, the biochemical compounds and the mineral salts and optionally other additives. The physisorption of aerobic microorganisms on the plant fibers is done according to a natural process of taking in water by the fibrous organic support of the aqueous fraction containing the microorganisms.

Depending on the uses related to the types of treatment, for example carbohydrates, lipids or proteins, the bacteria, yeasts, fungi and fungi produced sequentially in sterile fermenters are previously mixed and packaged with the known compounds constituting their culture medium.

Among the families of aerobic microorganisms used, mention may be made of the bacterial populations grouped in Table 1.

Yeasts belong to the group consisting of the families of sacchromomycetes, myxomycetes and candida.

Finally, as for fungi and fungi, such as all arpergillus and actinomycetes, they are used for the degradation of certain lipid compounds.

Table 1 - Types of microorganisms put in ouyre according to the invention

Thus the microorganisms used according to the invention are chosen in particular from the group consisting of bacteria: Micrococcaceae, Lactobacillaceae, in particular Lactobascillus, Bacillaceae, in particular Bacillus, Nesseriaceae, Enterobacteriaceae, in particular Aerobacter and / or Serratia, Azotobacteriaceae, in particular particular Azotobacter and / or Beijerinckia, Achromobacteriaceae, in particular Achromobacter, Rhizobiaceae, Nitrobacteriaceae, in particular Nitrosomonas and / or Nitrobacter, Thiobacteriaceae, in particular particularly Thiobacillus, Pseudomonadaceae, in particular Pseudomonas, Corynebacteriaceae, in particular Arthrobacter, Acetobacteracea, in particular Acetobacter, Vibrio, Flavobacteriacea, in particular Flavobacterium, and / or the group of fungi and fungi: Mucorales, in particular Rhizopus and / or Protoascomycetes, molds, in particular Aspergillus and / or Euascomycetes and / or Actinomycetes including, in particular, Nocardia and / or Pseudonocardia, and / or in the group of yeasts: Candida and / or Torula and / or Rhodotorula and / or Cryptococcus and / or Torulopsis.

Pathogenic microorganisms such as, for example, Streptococcaceae, obviously can not be used.

The quantity of culture used in the biodegradable product of environmental bioprocessing, object of the invention, varies according to the use.

The biodegradable product of environmental bioprocessing comprises between 0.5% and 20% and preferably between 1% and 10% by weight of aerobic microorganisms, that is to say bacteria, fungi and fungi and / or aerobic yeasts in their environment. of aqueous culture.

According to the invention, the biodegradable product of environmental bioprocessing also comprises biochemical compounds favorable to the growth of the previously selected microorganisms such as amino acids, specific proteins, polysaccharides, yeast extracts, enzymes, pectins, vitamins, cellulose and hemicellulose.

The said biochemical compounds consist of at least one amino acid and are combined in a formulated aqueous phase, in which certain components are soluble, in particular amino acids. These amino acids have the property of acting as nutrients for the microorganisms contained in or and present on the fibrous organic support, at the moment of their revival.

The 20 amino acids can be used, alone or in mixture. The major concentrations are represented by arginine, methionine, isoleucine, tryptophan, and glutamic acid which can represent between 70% and 80% by weight of all the amino acids present.

The aqueous mixture of these biochemical compounds is introduced at from 0.5% to 20% by weight and preferably from 8% to 16% by weight of the biodegradable product of environmental bioprocessing.

According to the invention, the biodegradable product of environmental biotreatment also comprises inorganic salts favorable to a better development of the selected aerobic microorganisms.

The nature and amounts of mineral salts are carefully studied. These inorganic salts are compounds such as nitrates and / or phosphates and / or sulphates of ammonium, of sodium, of potassium, of magnesium, calcium, manganese, molybdenum, iron, copper, zinc.

The inorganic salts incorporated in the environmental bioprocessing product represent between 0.1% and 5%, and preferably between 0.5% and 3% of the total weight of the environmental bioprocessing product.

It is thus possible to have, for example, an association with respect to the weight of the bioprocessing product:

calcium sulphate at a rate of 0.2% to 0.8%,

ammonium phosphate at a rate of 0.1% to 1%,

potassium phosphate at a rate of 0.05% to 0/2%, copper sulphate at a rate of 0.01% to 0.03%,

magnesium sulphate or phosphate in a proportion of 0.01% to 0.08%,

manganese sulphate at a rate of 0.01% to 0.05%.

Various micronutrients based on iron, zinc, molybdenum may also be present in the biotreatment product in a proportion of 0.1% to 0.8% by weight of said bioprocessing product.

The product for environmental biotreatment is in the form of pulverulent pulverulent material having an open porosity sufficient to allow the maintenance in aerobic condition of the microorganisms introduced.

The biodegradable product for environmental biotreatment is thus a product that is stable and can be easily stored and handled, to be used when the time comes, under moisture permitting its dissolution and controlled biodegradation, the revival of aerobic microorganisms and thus their .Liberation and their effective use in the medium to be treated.

According to the invention, the process for producing biodegradable products intended for biological treatment, in particular environmental biotreatment, is characterized in that it comprises the following steps:

(i) drying, optionally dehydrating, grinding a fibrous plant material, to form the fibrous organic support,

(ii) preparing at least one family of aerobic bacteria, yeasts, fungi or fungi in an aqueous medium in the presence of nutrients,

(iii) melting the fibrous plant material with the microorganisms in their culture medium, the biochemical compounds, the necessary mineral salts. the development of introduced microorganisms and possibly other additives.

The mixture is made from the pulverulent form obtained by grinding all the natural lignocellulosic components, that is to say the plant, such as for example alfalfa, the fibers thus ground varying between 10 mm for the longest and 100 micrometers for the shortest, microorganisms in their culture medium, other biochemical compounds, mineral salts and possibly other additives, all in an aqueous medium.

There is no selection for the distribution of particle size for crushed fibrous plant materials.

The mixture of the various components constituting the biodegradable product of environmental biotreatment is made, in a conventional mixer, without the addition of water, the aqueous media containing the biochemical growth compounds and the aqueous culture medium of the microorganisms being sufficient to impregnate the fibers of by their capacity for absorption and desorption of aqueous medium.

During mixing, no incident temperature rise is observed.

The activity of the microorganisms present in the biotreatment product is slowed down. There may be sporulation of the strains, but the exo-enzymes are not damaged, unlike lyophilization.

The biodegradable product of pulverulent environmental bioprocessing is in the form of a "soft meal" or a "grind" which is preserved over time. The storage of the product according to the invention is bagged. The residual moisture content of said product is optimized, with regard to the need for its flowability, the risks of caking, and in view of the requirements of bacterial reviviscence. The biodegradable biotradable environmental powder product is thus aerated with trapped air.

The powdery environmental bioprocessing product according to the invention is used when the amounts to be deploy on a site are important, the spreading of the product in its powder form, is simple and can be done very homogeneously in terms of dispersed quantities.

The biodegradable product of environmental biotreatment can be used directly in its powder form or possibly be used for coating substrates or be compacted in the form of granules.

The use of the biodegradable environmental biotreatment product is extremely diverse. Thus, according to the appropriate formulations and in particular according to the types of aerobic microorganisms selected, it will be possible to treat ambient media in general. It will be possible to treat fats, hydrocarbons and, by extension, all organic compounds, these pollutants may be present in water, in soil, and in the air, in particular contaminated with volatile organic compounds. , in urban or industrial wastewater treatment plants, in specific micro-treatment plants, as well as for the treatment of composts and for biofiltration treatments for air and liquid effluents.

Some of these uses relate more particularly to the treatment by bioaugmentation of waste water in industrial or urban environment, in situations of overload, accidental toxicity or under-sizing treatment station. The biodegradable product of environmental bioprocessing according to the invention will be better understood thanks to an exemplary embodiment illustrating the invention without diminishing the scope.

EXAMPLE:

Table 2 describes various products according to the invention. The fibrous organic support uses alfalfa and beet pulp in varying proportions.

Table 2 - Biodegradable Product for Environmental Biotreatment

When the carbon / nitrogen ratio of the product to be treated, for example effluent or compost of green materials, is greater than 50, preference will be given to product 1, the organic fibrous support of which uses alfalfa only. Conversely, in the case where the carbon / nitrogen ratio is less than or equal to 5, the product 5 whose fibrous organic support only uses beet pulp is preferentially used. - ^• .

In both cases, it is a matter of optimizing the carbon / nitrogen ratio of the products to be treated.

The effectiveness of the biodegradable product of environmental bioprocessing has been demonstrated through a test consisting of a treatment of dietary fat stored in the tray. Such organic waste consists of kitchen and dishwater and

^' include organic fat mixtures of both animal and vegetable origin. Such waste can not be sent to the sewer at risk of decomposition emitting harmful compounds. They must therefore be stored and processed, either on site or after collection by emptying, by specific methods.

In a grease tray, 3 m ³ of a school providing 2000 meals / day, the following test was carried out:

- installation of an aeration system allowing the diffusion in the form of large bubbles of ambient air in the two parts of the tank separated by a partition,

rupture of the initial crust about 10 cm thick, broken - to favor the _. transfer of oxygen, without being evacuated from the tank, introduction into the grease trap or in the upstream pipes of the biodegradable environmental biotreatment product according to the invention and corresponding to the product 2, on a weekly basis, for 9 consecutive weeks at a rate of 1.5 to 3.0 kg /week. The biodegradable product for environmental biotreatment ^had been made 15 months before its use, demonstrating the same storage capacity of aerobic microorganisms and capacity. of reviviscence of these microorganisms. These were bacteria of the micrococcacae, bacillus, pseudomonas type.

The amount of environmental biotreatment products according to the invention introduced for the treatment of grease trays is a function of the number of meals distributed per day. The values in kilograms appear in Figure 1.

The qualitative results obtained are transcribed in Table 3 and graphically in Figures 2 and 3.

Table 3 - Qualitative Results

The quantitative results concern the evolution of the biological oxygen demand (BOD) and the chemical oxygen demand (COD) before and after treatment with the biodegradable environmental biotreatment product according to the invention. These results appear in both figures 2 and 3, again for a grease trap of 3 m ³ , corresponding to the activity of a school canteen serving 2000 meals / day. The measurement dates are incorporated in the abscissa, validating the processing time and the speed of the restoration of the properties of the middle pollué..Le final treatment is carried out in a station ^Λ treatment after discharge into the sewer system.

FIGS. 2 and 3 illustrate the variation of the COD and BOD5 of the fatty effluent to be treated: despite a relatively short residence time in the tank, the addition of the biodegradable environmental biotreatment product according to the invention, with aeration, allows under the conditions of the test an average reduction of 61% of the COD (up to 76% under the conditions of the test) and 54% of the BOD5 (up to 69% under the conditions of the test). test). The addition of the biodegradable product of environmental bioprocessing does not result in a simple liquefaction of fats, like most products present on the. market, but actually allows a pre-treatment of the grease present in the grease trap, thus limiting the number of emptyings necessary and avoiding the fouling of the downstream network.

On the other hand, such a biodegradable product of. Environmental biotreatment offers ease of implementation for the assay, since the same supply in liquid form would require the installation of three dosing and flow control equipment.

Finally, under equal parametric conditions, the kinetics of degradation of the organic matter is greater for the biodegradable product of environmental biotreatment compared to the same mass of freeze-dried or liquid bacteria feed, and this because of the preservation facilities offered by the conditioning mode according to the invention. This is a dehydration natural without damage to the enzymes, and the supply of nutrients and additives contained in particular in the organic fibrous substrate promotes the development of aerobic microorganisms in the receiving environment.

The use of the biodegradable environmental biotreatment product according to the invention thus guarantees an optimal and superior treatment to the treatment by simple bacteria kept in a liquid form in can or freeze-dried.

Claims

1. Powdered biodegradable product for environmental biotreatment consisting of: a) at least one family of aerobic microorganisms, in their culture medium, adapted to the treatment of pollutants to be treated, b) biochemical compounds favorable to the growth of microorganisms previously selected, characterized in that said biodegradable product further comprises c) a fibrous organic support derived from natural lignocellulosic components, having the capacity to absorb and desorb an aqueous medium, d) mineral salts necessary for the development of microorganisms aerobes, and possibly other additives.

2. Product for environmental bioprocessing according to claim 1 characterized in that the fibrous organic support is non-starchy and is selected from the group comprising alfalfa, beet pulp, lupine, soybean, sorghum, legumes type beans, - hemp, flax residues.

3. Product for environmental bioprocessing according to claim 2 characterized in that the non-starchy fibrous organic support is preferably a mixture of alfalfa and beet pulp.

4. Product for environmental biotreatment according to at least one of claims 1 to 3 characterized in that ^• the fibrous organic medium is added to from 60% to 98% by weight and preferably from 75% to 90% by weight of the composition constituting said product.

5. Product for environmental biotreatment according to at least one of claims 1 to 4 characterized in that it contains at least one family of aerobic microorganisms, selected from the group of bacteria, yeasts, fungi and / or fungi of the Nitrogen and carbon cycle.

6. Product for environmental biotreatment according to at least one of claims 1 to 5 characterized in that it contains between 0.5% and 20% and preferably between 1% and 10% by weight of aerobic microorganisms, in their environment. aqueous culture.

7. Product for environmental biotreatment according to claim 6, characterized in that the aerobic microorganisms of bacteria, fungi, fungi and / or yeast type have a concentration ranging from 10 ⁷ to 10 ¹⁰ cfu / ml in their aqueous culture medium.

8. Product for environmental biotreatment according to at least one of claims 1 to 7 characterized in that the aerobic microorganisms are chosen in particular from the group consisting of bacteria: Micrococcaceae, Lactobacillaceae, in particular Lactobascillus, Bacillaceae, in particular Bacillus, Nesseriaceae, Enterobacteriaceae, in particular Aerobacter and / or Serratia, Azotobacteriaceae, in particular Azotobacter and / or Beijerinckia, Achromobacteriaceae, in particular Achromobacter, Rhizobiaceae, Nitrobaeteriaceae, in particular Nitrosomonas and / or Nitrobacter, Thiobacteriaceae, in particular Thiobacillus, Pseudomohadaceae, in particular Pseudomonas, Corynebacteriaceae, in particular Arthrobacter, Acetobacteracea, in particular Acetobacter, Vibrio, Flavobacteriacea, in particular Flavobacterium, and / or of the group of fungi and fungi: Mucorales, in particular Rhizopus and / or Protoascomycetes, molds, in particular Aspergillus and / or Euascomycetes and / or Actinomycetes including, in particular, Nocardia and / or Pseudonocardia, and / or in the group yeasts: Candida and / or Torula and / or Rhodotorula and / or Cryptococcus and / or Torulopsis.

9. Product for environmental biotreatment according to at least one of claims 1 to 8 characterized in that it contains biochemical compounds constituting bacterial growth nutrients.

10 ^' . Product for environmental biotreatment according to Claim 9, characterized in that the biochemical compounds comprise at least one amino acid chosen from the group of 20 amino acids.

11. Product for environmental biotreatment according to at least one of claims 1 to 10 characterized in that the biochemical growth compounds represent from 0.5% to 20% by weight and preferably 8% to 16% by weight of the product.

12. Product for environmental biotreatment according to claim 9, characterized in that the biochemical compounds also comprise polysaccharides.

13. Product for environmental biotreatment according to at least one of claims 1 to 12 characterized in that it contains inorganic salts.

14. Product for environmental biotreatment according to claim 13 characterized in that the inorganic salts are chosen from the group consisting of nitrates and / or phosphates and / or sulphates of ammonium, sodium, potassium, magnesium, calcium, manganese, molybdenum, iron, copper, zinc.

15. Product for environmental biotreatment according to at least one of claims 1 to 14 characterized in that the inorganic salts are present in a proportion of 0.1% to 5%, and preferably from 0.5% to 3% by weight. the composition of the said product.

16. Product for environmental biotreatment according to either of claims 1, 6 and 7 characterized in that the aqueous culture medium comprises nutrients and other bacterial growth additives selected from pectins, yeast extracts, cellulose and hemicellulose, polysaccharides, enzymes, vitamins.

17. A method of manufacturing products for environmental biotreatment according to at least one of the Claims 1 to 16, characterized in that it comprises the steps

(ii) preparing at least one family of aerobic bacteria, yeasts, fungi or fungi in an aqueous medium in the presence of nutrients, (iii) blending the fibrous plant material with the microorganisms in their culture medium, biochemical compounds, the mineral salts necessary for the development of introduced microorganisms and possibly other additives.

18. Use of the environmental bioprocessing product according to at least one of claims 1 to 17 in the form of powder or in the form of a coating of substrates or in the form of granules by compacting.

19. Use of the. environmental bioprocessing product according to at least one of claims 1 to 18 for all applications such as the treatment by bioaugmentation of wastewater in an industrial or urban environment, in situations of overload, accidental toxicity, or under-sizing of a wastewater treatment plant. treatment, or in the case of. treatment of soil, water or air contaminated with hydrocarbons or organic compounds, grease treatment, treatment of ambient environments in general, and composting.