Classifications

• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F3/00—Biological treatment of water, waste water, or sewage
  • C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
  • C02F3/327—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae characterised by animals and plants
• • C—CHEMISTRY; METALLURGY
  • C05—FERTILISERS; MANUFACTURE THEREOF
  • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
  • C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
  • C05F17/70—Controlling the treatment in response to process parameters
• • C—CHEMISTRY; METALLURGY
  • C05—FERTILISERS; MANUFACTURE THEREOF
  • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
  • C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
  • C05F17/80—Separation, elimination or disposal of harmful substances during the treatment
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
  • A61L2103/00—Materials or objects being the target of disinfection or sterilisation
  • A61L2103/05—Living organisms or biological materials
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
  • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
  • A61L2202/10—Apparatus features
  • A61L2202/14—Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F2101/00—Nature of the contaminant
  • C02F2101/30—Organic compounds
  • C02F2101/306—Pesticides
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
  • C02F2103/001—Runoff or storm water
• • 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
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E50/00—Technologies for the production of fuel of non-fossil origin
  • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
• • 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
  • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
  • Y02P20/00—Technologies relating to chemical industry
  • Y02P20/141—Feedstock
  • Y02P20/145—Feedstock the feedstock being materials of biological origin
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
  • Y02W10/00—Technologies for wastewater treatment
  • Y02W10/10—Biological treatment of water, waste water, or sewage
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
  • Y02W30/00—Technologies for solid waste management
  • Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse

Definitions

• the invention relates to the field of techniques for the treatment and degradation of organic micropollutants contained in plants grown from wastewater, treated water leaving treatment stations and rainwater.
• the treated water leaving treatment stations and rainwater from urbanized surfaces and roads are, in most cases, discharged into surface water bodies such as rivers and seas. .
• Treated water is little used in agriculture because of the micropollutants it contains and which are ultimately found in plants and can therefore enter the food chain.
• nitrogen and phosphorus are primarily nutrients used in agriculture. These nutrients become a precious resource.
• the present invention relates to a technique for the treatment and degradation of organic semi-pollutants contained in cultivated plants from wastewater, treated water leaving treatment stations and rainwater.
• these plants are more precisely reeds and nettles. These plants absorb organic micropollutants contained in polluted water. They are then harvested and then immersed in water to trigger fermentation.
• This process of treatment and degradation of organic micropollutants contained in plants grown from wastewater, treated water leaving treatment stations and rainwater comprises in the first step the introduction of harvested plants, having a large number of organic micropollutants detected and water in a container.
• the process continues with a stage of fermentation of the contents of the container.
• the presence of organic mid-crop pollutants is analyzed within the contents of the container.
• This analysis of the presence of organic micropollutants is a targeted analysis by chromatography of a selection of organic micropollutants.
• micropollutants includes at least several hundred micropollutants from a list of potential micropollutants which contains pesticides, drugs, personal hygiene products, household products, plastic derivatives and other toxic products.
• thresholds for reducing the quantities of micro pollutants initially detected in abundance or in strong presence are set up.
• the criterion for reducing the quantities of micropollutants initially detected is a criterion for reducing the number of families of pollutants initially detected regardless of the detection technique.
• the criterion for reducing the quantities of micropollutants initially detected by chromatography is a criterion for reducing the peak area of the families of pollutants initially detected.
• this process targeting pathogens is only implemented once the threshold for reducing the amounts of micropollutants initially detected has been reached.
• the process according to the invention allows the water to be polluted water which has not yet benefited from the transfer of pollutants to cultivated plants from the wastewater.
• the process is parallelized by periodic reintroduction of all or part of cultivated plants or of water.
• the device according to the invention corresponding to the process according to the invention is a device for the treatment and degradation of organic micropollutants contained in plants grown from wastewater, treated water leaving the stations of treatment and rainwater which comprises a container whose contents include harvested plants having a large number of organic micropollutants detected and water and which is a bioreactor for treating a biomass comprising the cultivated plants implementing the process according to the invention.
• the container is a generally closed container to be shielded from oxygen, that is to say under anaerobic conditions, having means for introducing the cultivated plants and means for removing the gases resulting from the fermentation .
• fermentation is used broadly to mean a chemical and biological reaction between plants and water.
• the contents include the harvested plants having a large number of detected organic micropollutants and water. It probably also contains suspended matter.
• this device is used for the fermentation of the contents of the container under anaerobic conditions.
• the wastewater treatment plant according to the invention comprises the device according to the invention implementing the process of the invention.
• this wastewater treatment station has its own cultivation of plants grown from its wastewater and operates in a closed circuit without external input, thus being virtuous from the point of view of the life cycle.
• FIG.l shows in section the starting step of the treatment process of organic micro pollutants contained in nettles.
• FIG. 3 shows in section the starting step of the treatment process for organic micropollutants contained in reeds.
• the present invention relates to a technique for the treatment and degradation of organic semi-pollutants contained in plants (2) cultivated from wastewater, treated water leaving treatment stations and rainwater from urbanized surfaces and roads.
• the technique according to the invention makes it possible to use water of various origins which may contain macropollutants and / or organic micropollutants in order to cultivate plants.
• These plants (2) which in our present case are nettles (2A) and reeds (2B), are harvested and then undergo a treatment allowing the degradation of organic micropollutants.
• this process allows the conservation of nutrients and trace elements contained in plants.
• the invention therefore makes it possible to transform a large number of disadvantages into advantages. It takes advantage of water and nutrients while treating a large majority of organic micropollutants.
• Waste / treated / rainwater is used to cultivate, via irrigation systems, plants (2) such as nettles (2A), reeds (2B) and trees.
• the stages of the treatment process according to the invention of the plants (2) thus harvested are as follows.
• these plants (2) are introduced into a container (1) and then are then immersed in water (4) in the same container (1).
• One of the objects of the invention is that this mixture of water (4) and plants (2) causes fermentation in order to degrade organic micropollutants.
• this fermentation will take place in the absence of oxygen.
• One or more active substances playing the role of catalyst can be added.
• the mass of water (4) added is within a factor of 10 relative to the mass of the plants (2) introduced.
• the device (D) comprises a container (1) with an orifice containing nettles (2, 2A), suspended matter (3), water (4), a tube (5), a plug (6) for obstructing the orifice, a support (7).
• This arrangement makes it possible to carry out the fermentation in an almost closed container (1), with an orifice large enough to be able to introduce the plants (2), and once the plants (2) have been introduced to close the container (1) by a plug (6), plug (6) provided with a tube (5) for venting.
• vent tube (5) allows the gases produced by the fermentation to be evacuated. These gases from fermentation can simply be released into the open air. They can also be processed and potentially exploited.
• the container (1) is only a few liters.
• the container (1) may have a shape, an orifice, a support and a volume different from that shown as long as it allows the fermentation process as described with equivalent functionalities. .
• the container (1) may in an industrial process take the size of a tank, of a tank with a wide opening.
• FIG.2 shows in section the final step of the treatment process of organic micropollutants contained in nettles (2A).
• the device (D) comprises a container (1) with an orifice containing nettle residues (2A), suspended matter (3), water (4), a tube (5), a plug (6) allowing the orifice to be blocked, a support (7).
• container (1) with an orifice containing nettle residues (2A), suspended matter (3), water (4), a tube (5), a plug (6) allowing the orifice to be blocked, a support (7).
• the Contents of container (1) is in the form of solute.
• FIG.3 shows in section the starting step of the treatment process of organic semi-pollutants contained in the reeds.
• the device (D) comprises a container (1) with an orifice containing reeds (2, 2B), suspended matter (3), water (4), a tube (5), a plug (6) for obstructing the orifice, a support (7).
• FIG.4 shows in section the final step of the treatment process of organic micro pollutants contained in the reeds.
• the device (D) comprises a container (1) with an orifice containing reed residues (2B), suspended matter (3), water (4), a tube ( 5), a plug (6) allowing the orifice to be blocked, a support (7).
• the content of the container (1) is in the form of a solute.
• this list must include in particular emerging micropollutants classified as dangerous substances by the European framework directive on water and the national micropollutants plan 2016-2021. Also, this research must also integrate the list of micropollutants appearing in the technical note of 29/01/18 relating to the research of micropollutants in raw water and in treated wastewater from wastewater treatment plants and their reduction in relation to the Overseas Departments and Regions.
• This list contains pesticides, drugs, personal hygiene products, household products, plastic products and other toxic products.
• the recommended methodology is sufficiently sensitive to detect traces of micropollutants ( ⁇ qg / l).
• the fermentation process will take several days, or even weeks, until the reduction is observed until a very low presence of organic micropollutants in the solute.
• threshold it is recommended to set thresholds by way of example where out of about a thousand potential organic micropollutants, that the fermentation process has divided on average the micropollutants initially detected according to of a criterion.
• thresholds for reducing the quantities of pathogenic agents such as bacteria and viruses initially detected within the contents of the container are set up (1).
• fermentation is used broadly in the sense of a chemical and biological reaction between plants (2) and water (4).
• the criterion for reducing the quantities of micropollutants initially detected is a criterion for reducing the number of families of pollutants initially detected regardless of the detection technique.
• the criterion for reducing the quantities of micropollutants initially detected by chromatography is a criterion for reducing the peak area of the families of pollutants initially detected.
• this process targeting pathogens is only implemented once the threshold for reducing the amounts of micropollutants initially detected has been reached.
• the overall elimination of the bacteria could be detrimental to the process in the general case where the overall elimination of the bacteria would take place indiscriminately between the bacteria essential to the process, the proliferation of which is beneficial for the process and pathogenic bacteria on the contrary harmful to health.
• the process according to the invention allows the water (4) to be polluted water which has not yet benefited from the transfer of pollutants to plants (2) grown from wastewater.
• the process is parallelized by periodic reintroduction of all or part of cultivated plants (2) or water (4).
• This option makes it possible to treat more pollutants in a shorter time and therefore to reduce the volumes of the container (1).
• the plants (2) are essentially composed of two types of parts, namely the fibrous parts and the non-fibrous parts.
• the speed and the characteristics of the degradation of these two parts are very different.
• the non-fibrous parts are degraded very quickly over a period of about a week while for the fibrous parts it can take several months.
• the process device can again be supplied with biomass in order to maintain the biological and chemical reactions as much as possible.
• the non-fibrous parts may have already been degraded, releasing a volume that has become available inside the container (1).
• the fibers As for the fibers, they can remain within the bioreactor longer. Note that their volume is much smaller than the non-fibrous parts.
• the device (D) according to the invention corresponding to the process according to the invention is a device (D) for the treatment and degradation of the organic micropollutants contained in the plants cultivated from the waste water, from the treated water leaving the stations.
• treatment and rainwater characterized which comprises a container (1) whose contents include plants (2) harvested having a large number of detected organic micro pollutants and water (4) and which is a treatment bioreactor a biomass comprising the cultivated plants (2) implementing the process according to the invention.
• the size of the container (1) is not that of [fig.1] which illustrates the principle of the process but the size appropriate for the quantity of the volume of plants (2) and water ( 4) to be processed.
• the wastewater treatment plant according to the invention comprises the device (D) according to the invention implementing the process of the invention.
• this wastewater treatment station comprises its own cultivation of plants (4) cultivated from its wastewater and operates in a closed circuit without external input, thus being virtuous from the point of view of the life cycle.
• the invention incorporates the notion of the life cycle of sanitation systems, that is to say the positive local impact for the environment and a global positive impact for the environment.
• the treatment process according to the invention is particularly intended for the treatment of organic micropollutants contained in plants resulting from a crop irrigated by various polluted water.

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• Chemical & Material Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Organic Chemistry (AREA)
• Health & Medical Sciences (AREA)
• Microbiology (AREA)
• Biotechnology (AREA)
• Molecular Biology (AREA)
• General Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Biochemistry (AREA)
• Water Supply & Treatment (AREA)
• Toxicology (AREA)
• Botany (AREA)
• Biodiversity & Conservation Biology (AREA)
• Environmental & Geological Engineering (AREA)
• Hydrology & Water Resources (AREA)
• Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
• Apparatus Associated With Microorganisms And Enzymes (AREA)
• Processing Of Solid Wastes (AREA)

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• 2020
  • 2020-04-14 FR FR2003718A patent/FR3109094A1/fr not_active Withdrawn
• 2021
  • 2021-04-09 WO PCT/FR2021/000035 patent/WO2021209692A1/fr not_active Ceased
  • 2021-04-09 EP EP21723876.5A patent/EP4135781A1/de active Pending

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