WO2019215622A2 - Procédé de transformation industrielle et intégrale, à bas coûts des résidus solides urbains en un matériau de construction à usage humain - Google Patents

Procédé de transformation industrielle et intégrale, à bas coûts des résidus solides urbains en un matériau de construction à usage humain Download PDF

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WO2019215622A2
WO2019215622A2 PCT/IB2019/053752 IB2019053752W WO2019215622A2 WO 2019215622 A2 WO2019215622 A2 WO 2019215622A2 IB 2019053752 W IB2019053752 W IB 2019053752W WO 2019215622 A2 WO2019215622 A2 WO 2019215622A2
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msw
ton
product
stage
rsu
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PCT/IB2019/053752
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Spanish (es)
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WO2019215622A3 (fr
Inventor
Fernando Javier Rocha Maguey
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BARRETO CHÁVEZ, Divier Benjamín
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Publication of WO2019215622A2 publication Critical patent/WO2019215622A2/fr
Publication of WO2019215622A3 publication Critical patent/WO2019215622A3/fr

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00Destroying solid waste or transforming solid waste into something useful or harmless
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Definitions

  • the present invention relates to the industrial and integral transformation of Urban Solid Waste under zero processing emissions to the atmosphere that benefits the environment since it is completely green, in low-cost construction material, under the Garbage scheme Zero, giving them various ways so that they are susceptible of application in the construction of housing for human housing, offices, as well as their use in the development of urban infrastructure of cities, communities and populations through its application in streets, sidewalks, garrisons, parks, road separators, schools and road markings.
  • the Urban Solid Waste does not enter a state of decomposition, when treated since its arrival at the plant and these are transformed through this system, seeking its molecular breakdown to through a specialized technical process of triple grinding up to a suitable particle size (6 millimeters), its homogenization, molecular and density restructuring through the application and mixing of sanitizers, inertizers and water repellents with Urban Solid Waste and finally its molecular reunification through a process of compaction and drying through the elevation of the temperature which avoids the affectation, alteration and production of damages in the environment and ecosystem of the perimeter zone that surrounds the plant produced by the greenhouse gases, percolated liquids, leached , heavy metals, etc., in a process no greater than 45 minutes after arrival
  • the final product obtained from this process of transformation of Urban Solid Waste gives tangible benefits in the profitability of the community that produced such waste, since it reduces MSW handling costs by decreasing transport routes, in addition to the fact that The final product can be used for the development of infrastructure in the area by applying it on sidewalks, separating garrisons and boundaries of roads, parks or being dedicated to the construction of housing, offices, schools, etc.
  • composition values of the MSW are described in terms of mass percentage, also usually on a wet basis and contents such as organic matter, paper and cardboard, rubble, plastics, textiles, metals, glass, bones, etc.
  • pollutants caused by diseases (without considering hospital waste), including dead animals, thus producing the transmission to the population of viruses and bacteria, through transmission vectors such as dogs, birds, insects, rodents, etc.
  • Table 1 shows the different components of which RSUs are usually composed, as well as the percentage of each of them: Table 1. Common components of MSW
  • MSW The treatment of MSW includes the selection and application of appropriate technologies for the control and treatment of hazardous waste or its constituents. Regarding the provision, the most commonly used alternative is the landfill.
  • Landfill and Landfill processes do not diminish, much less eliminate greenhouse gases, leachate, or percolates, and the potential transmission of pathogens to the population.
  • d.- Generation of degradators of the Ozone Layer There are products that, due to the nature of their manufacture and the chemical agents used in their production, generate certain gases that disintegrate the ozone layer. These gases are known as chlorofluorocarbons or CFCs and are used in the manufacture of single-cell containers, such as Aerosol propellants for hair, in some paints and deodorants. When the containers of these products are discarded in the trash they become sources of emission of these gases.
  • Air pollutants both gaseous and articulated, can have negative effects on the lungs since in times of drought, winds raise a large amount of dust that is transported by the wind, contaminating water from rivers, lakes, wells, food, nearby towns, etc., because these dust particles remain suspended in the air.
  • United States patent US 5,254,265 describes a garbage disposal system comprising the steps of: a) crushing, in which liquids are also separated from the solids contained in the garbage, b) a metal scrap recovery process , c) a drying process, d) a heating process for sterilization, e) a compression process to form blocks, f) a process of encapsulating the material with cement for final disposal at sea, g) a process of waste liquid treatment, h) a waste gas treatment process, in the process that of the present invention, the liquids contained in the garbage are incorporated in the final product, in addition to said final product of the present
  • the invention is not encapsulated or disposed at sea, on the contrary the use that is given is for the construction industry.
  • International patent application WO 2009/147463 refers to a process for the final disposal of residential solid waste from insular and coastal localities consisting of the stages of: a) grinding, b) homogenization and sanitation, c) stabilization, d) molding , e) drying, f) encapsulation and g) final disposal at sea, however, in the process described in said application, there is no reference to a three-stage grind or the grain size to be achieved in grinding, In addition to that said process is aimed at the treatment of household solid waste only from insular and coastal regions, and contemplates the additional steps of encapsulation of the product obtained and the final disposal at sea.
  • the Mexican patent application MX / a / 2007/014020 refers to a process of artisanal type to transform the MSW, the process uses a single mill that does not allow to give the density and granulometry that is required to be able to fuse the elements of the RSU, which, when not being fused with the exact molecular compaction and integration, produces that the resulting material is porous, without resistance, easily crumbly and with little cohesion in its structure, so it would not resist the weight and general conditions of use in a residential construction, or as a road separator, or as an adocrete, likewise, the granulometry that results from grinding gives it an unpleasant physical appearance since semi-solid-crushed and compacted MSWs are visibly noticed, unfortunately the cohesion state is weak and The degree of permeability is high since it allows easily the introduction of liquids into its interior, weakening its integrity and res istence, as well as easy introduction of microorganisms that can use this material as an incubation medium for procre
  • the process described in the Mexican patent 31 1059 refers to an immediate antecedent to the present process, whose system can be considered of industrial type to transform the MSW, the process uses three mills that allow to give some density and particle size partially, since With this process there is still the problem of not obtaining a homogenization of the content of the various elements that make up the MSW, such as textiles, plastics and branches.
  • the process described in Mexican patent 31 1059 employs a Shroedder type knife mill in the first grinding stage in order to try to crush, tear and destroy the integrity of the MSW to the maximum, without obtaining a particle size of 1.56 cm , so that a second round of grinding is required, to obtain that granulometry, being susceptible to clogging due to various materials that contain MSW such as textile and plastic products such as plastic bags, which causes the process to stop to release those elements.
  • the process described in Mexican patent 31 1059 employs a third grinding stage, using a rasper mill that is a mill that has blades and hammers, and seeks to obtain a milling whose granulometry is 6 mm and the density is close to 1 g / cm 3 , keeping liquids and water;
  • This type of mill in practice is very slow for the capacity of material to be processed, because the hammers go at low speed and therefore, the blades decrease their productivity, since they are directly related to the hammers, giving As a result, its grinding chamber becomes saturated and does not allow it to continue grinding.
  • Another embodiment of the present invention refers to a process of industrial and integral transformation of urban solid waste (MSW) into construction material susceptible to human use characterized in that it consists of the following stages:
  • a pre-selection and separation stage in which the material processed by the feeder worm passes through a magnetized tunnel with a conveyor belt, with the purpose of capturing and separating metal particles, following the remaining material through a pepenado band (BNDPE) where the recyclable material is separated, the pepe band conveys the remaining material to feed the primary crusher;
  • BNDPE pepenado band
  • a primary grinding stage which is carried out with a double shredder primary shredder, shredder type of multi-material blades with interchangeable sleeves, equipped with two serrated rollers with differential speed and extraction hood, with a chamber grinding between 1000 and 1200 mm, with dimensions in the cutters between 500 and 600 mm, preferably 500 mm, and with a number of between 5 and 10 teeth in each cutter, preferably 7 teeth, in order to obtain a particle size of the MSW between 1 and 2 cm and preferably 1.56 cm; c.1) a demagnetization inter-stage where metal particles whose size is larger than 2 cm 2 are separated ;
  • a secondary grinding stage which is carried out by means of a rotary hammer crusher with knife grill with adjustable opening screen for multiple materials with rehabilitable mallets; with a grinding chamber of between 2 and 3 m 3 , the knife grill is open at 1 ”until densities close to 1 g / cm 3 are obtained and granulometry close to 1.4 cm - 1.2 cm, with extraction hood, which is fed by means of a conveyor belt that transports the crushed MSW of the primary mill;
  • a stage of tertiary grinding which is carried out by means of a hammer crusher with sieve type blades open to 1/8 ”, and extraction hood, with grinding chamber of between 2 and 3 m 3 ; that is fed by means of a conveyor belt that transports the crushed MSW of the secondary mill;
  • each crusher in stages c), d) and e), has a spray hood which is connected to a sprinkler irrigation line which feeds on a fresh water tank;
  • Transport stage which consists of a giraffe-type cannon elevator, processed product feeder silos and processed material transporting caterpillar, where the MSW from the screening are moved to the mixing stage;
  • a mixing, sanitization and inertization stage in which a pre-mix of the chemical, inertizing and sanitizing additives is supplied through previously prepared super bags, wherein said pre-mix is dosed by gravity through an opening in the super bags , to a first circular mixer, also dosing ionized water and leachate, through sprinklers placed on the sides of said first mixer, with a useful mixing process for 18 to 20 minutes, then a dump type discharge is made towards a second mixer continuing with a second useful mixing process for 18 to 20 minutes of the semi-wet paste resulting from the first mixing, wherein said pre-mix is prepared with the corresponding amounts of the following products, for each ton of processed MSW: PRODUCT QUANTITY
  • the pre-mix is prepared with the corresponding amounts of the following products, for each ton of MSW processed:
  • stage i) a stage of drying, inertization and sanitization of the product obtained in stage i), wherein said product is passed through a tunnel-type drying and centrifugal furnace composed of a band-type pre-drying oven continues with speed variable, which is equipped with heat sources based on LP gas, electric natural gas or microwaves, to reach a maximum temperature of 400 ° C, and automatic temperature control, which together with surrounding fans, allow the semi-humid material to achieve a greater inertization, in addition to drying up to 95%, resulting in the final product.
  • speed variable which is equipped with heat sources based on LP gas, electric natural gas or microwaves, to reach a maximum temperature of 400 ° C, and automatic temperature control, which together with surrounding fans, allow the semi-humid material to achieve a greater inertization, in addition to drying up to 95%, resulting in the final product.
  • speed variable which is equipped with heat sources based on LP gas, electric natural gas or microwaves, to reach a maximum temperature of
  • the (RSU) are received in a thrommel feeder worm, which is fed by bulk trucks.
  • the preselection continues by operators manually with respect to the recyclable waste selected from polyethylene terephthalate (PET), glass, metal, plastic, paper and cardboard;
  • PET polyethylene terephthalate
  • BNDPE pepenado band
  • the pepenado band will transport the protruding material to feed the primary crusher.
  • the purpose of primary crushing is to give the secondary mill greater capacity, it is required that its operation be in a field button station.
  • the purpose of secondary crushing is to give the tertiary mill greater capacity by reducing the granulometry and density of the MSW, its operation is required in a field button station.
  • Crusher 36 "x 30" of hammers with sieve type blades open to 1/8 ", and extraction hood, 125 HP engine, with a grinding chamber of 3 cubic meters of capacity, which is fed by means of a conveyor belt of 60 cm x 9 meters with 5 HP motor.
  • each crusher has a spray hood which is connected to a sprinkler irrigation line which feeds on a fresh water tank. Once this water is used, it is stored in a decantation pit as well as the leachates generated in each of the mills, these leachates together with the sprinkler irrigation water are sent to the Mixer (MEZ-2.13) and are used in the mixing .
  • the MSW from the screening are moved to the mixing stage and consists of 3 subsystems.
  • Feeding silos of processed product Deposits designed to contain the MSW processed in the milling stage and after the screening stage, these tanks are manufactured with 18 gauge alloy steel, tugstene and surgical steel, with dimensions of 22 m 3 , with 6 HP motovibrators and arms rotating to prevent the ground and subsequently screened product from clogging or compacting, with an equipment weight of 3000 kg.
  • the pre-mix is prepared with the corresponding amounts of the following products, for each ton of MSW processed:
  • This part of the process uses the material resulting from the previous stage and is carried out by means of a molding partition former with an adjustable applied force hydraulic compactor.
  • the leachate surpluses generated in the pressing process are stored in the decantation pit and subsequently returned to the mixers and used again, this is done by pumping.
  • step i) The product obtained in step i), is passed through a tunnel-type drying oven and centrifuged air consisting of a band-type drying oven continues with variable speed. Equipped with heat sources based on LP gas, natural gas; electrical or microwave energy, to reach a maximum temperature of 400 ° C, and automatic temperature control (HOR-2.15), which together with surrounding fans, allow semi-humid material to achieve greater inertization, in addition to drying up to 95 %, to allow it to continue setting and thus achieve its maneuverability of packaging, packaging and storage; It is powered by an automatic charging system of partitions, resulting in a healthy, compact, hard, rigid product that does not break, and chemically and biologically inert;
  • HOR-2.15 automatic temperature control
  • a particular modality of the process described in the present application is that it is an industrial and integral transformation at low cost since in stage h) of mixing, in comparison with the prior art, it was discontinued for each ton of solid waste domiciliary (MSW): 90 kg of cement, 40 kg of lime, 40 kg of plaster, 3 kg of bentonite, 3 kg of calcium silicate, 3 L of calcium hydrochloride, 3 L of hydrogen peroxide and 3 L of polymer chloride-based liquid (SIKA).
  • MSW solid waste domiciliary
  • Another embodiment of the present invention relates to an industrial and integral transformation, at low cost of urban solid waste in construction material susceptible to human use under zero processing emissions to the atmosphere that benefits the environment, in addition to reducing considerably the cost of chemical implements, necessary in the process, which makes it more viable in practice to make finished products cheaper and more competitive, thereby benefiting the economy of the area of influence.
  • RSU Urban Solid Waste
  • the blades are open at 1 and 1 ⁇ 2 ”until densities close to 1 g / cm 3 and granulometry close to 1.4 cm - 1.2 cm are obtained, without reducing the weight and liquid content;
  • Tertiary mill consisting of a third type of rotary hammer crusher with knife grill with adjustable opening screen for multiple materials with rehabilitable maces and capacity of 15 ton / hour, with a grinding chamber of 3 cubic meters of capacity and with The following additional features:
  • the means for screening consist of a mesh system whose total area is 6 m 2 with opening at 1/8 ”, with an installed power of 5 hp of vibration and drag arm.
  • the means of transport consist of:
  • Giraffe-type canyon lift with the following characteristics: Length 15 m
  • 6000 L 6 ton / hour
  • receiving the dump-type discharge of the first mixer handling an 18-minute useful process of mixing the moldable, homogeneous, chemically and biologically inert, sanitized and odorless paste ; It is estimated a minimum of three axes per hour and thus produce 15 ton / hour. Additional characteristics:
  • the mixing of the material is carried out in 18 minutes in a first mixer for processed material and chemical additive from the storage silo with leachate water dispenser, and percolated, as well as 5 to 15 liters of ionized water added to 90 liters of drinking water, per ton of MSW material and mixing in a second mixer is continued for another 18 minutes until a moldable, homogeneous, chemically and biologically inert, sanitized and odorless paste is obtained; this mixer has dump type discharge towards the partition wall
  • said means consisting of a Hydramatic H4 / 1615 partition forming machine, with molding protection bars with hydraulic compactor of adjustable applied force.
  • the leachates generated in the pressing process are stored in the decantation pit and subsequently returned to the Mixer and again used this is done by pumping.
  • This unit has a 15 hp power motor, a 10 hp vibrator, uses a 70x90 table, produces 8 blocks of 15x20x40 x cycle, can produce blocks, paving stones, cobblestones, vaults, lattices, fittings, partition, etc .; It includes:
  • Another embodiment of the present invention relates to the product obtainable by the process of the invention, which is a useful product in the construction industry comprising Urban Solid Waste (MSW) and for each ton of MSW used for its preparation, in addition It comprises proportionally 40 to 60 kg of cement, 80 to 180 kg of lime, 10 to 30 kg of calcium bentonite, 10 to 30 kg of silica bentonite 10 to 30 kg of silica sand and 5 to 15 liters of ionized water at 3%, 5 to 15 L / Ton / RSU + 90L / H 2 O,
  • MSW Urban Solid Waste
  • the present invention refers to the product obtained from a zero processing of emissions into the atmosphere that benefits the environment, a process that results in a very economical product, chemically and biologically inert, sanitized, odorless, which can take the brick, partition or partition form (which allows to reduce the cost of construction of houses and all kinds of buildings), cobblestone for streets and avenues, sidewalk, deep drainage pipes (to urbanize cities and towns), separators and road markings, Cycleways, sidewalks or pedestrian paths, also eliminates landfills and landfills forever, achieving ecological, social and economic benefits of the region.
  • Figure 1 In general, the Industrial and Integral Transformation Process is shown, at a Low Cost of Urban Solid Waste in Building Material Susceptible for Human Use Under Zero Processing Emissions to the Atmosphere that Benefits the Environment.
  • Figure 2. A block, brick or partition wall is shown for the construction of housing and / or offices in various forms and measures, which are usually used in civil engineering, which can be obtained through the process of the present invention.
  • Figure 3. Represents adocrete, of different shapes and sizes, which can be obtained by the process of the present invention.
  • Figure 4 Represents sidewalks and pedestrian paths, which can be obtained by the process of the present invention.
  • FIG. 5 A road separator is shown, which can be obtained by the process of the present invention.
  • Figure 6. They are photos of the product obtained by the process of the present invention, which illustrates the Examples of embodiment.
  • Figure 7. It is a graph of the data obtained from losses for the analyzed samples of total solids and volatile solids.
  • the process of industrial and integral transformation, at low cost of urban solid waste in construction material susceptible to human use under zero processing emissions to the environment that benefits the environment is designed to transform the MSW of communities, cities and metropolises , in an industrialized way, so that the design, construction and operation of the plant, machinery and technology, will be according to the magnitude and density of population of the communities and cities that apply this technology, for which the factor number of inhabitants multiplied by the amount of MSW that are produced multiplied by 365 days that the technology would operate.
  • the present invention is embodied in a linear transformer plant built in modular form with the production base of 200 tons per production line, whose mills, crushers and other machinery have the ability to transform all types of MSW, even with prior selection or segregation , or without it, on the basis that the formulation that is applied to the transformation is previously developed and homogenized according to the type of MSW of the area of influence, which is intended to be processed, so prior analysis will be carried out an analysis comprehensive composition of the MSW.
  • the percentage of organic and inorganic MSW is taken into account, the first ones must have a transmutation of their physical and molecular integrity, ensuring that the cellular microorganisms that integrate them are completely neutralized, annulled and annihilated to avoid that in the future they can decompose their organic substances, mutate or degrade causing damage to the people who use it, so it is important to determine that the amounts of mixture and / or concentrate of chemicals, sanitizer, inertizers, hardeners , hydrofugants and binders are made based on the results obtained from previous studies of the composition of MSW, so that said mixture or concentrate has the necessary elements of inertization and sanitization.
  • the MSW on average are usually composed of values of between 37 to 41% for inorganic matter and between 53 to 63% of organic matter, when making a previous selection of inorganic materials, it is considered that the value of Inorganic materials vary and decrease, leaving a percentage of 17 to 21%, so the increase in the percentage of organic matter present in the MSW will be taken as a reference to determine the content of the mixture or concentrate used in the present invention,
  • the percentage of each of the inerting, sanitizing and water repellent agents established in the precedent of the present invention is directly linked to the greater amount of organic matter present in the MSW, Therefore, taking up the research practice, alternative chemicals with suitable properties were used to be used in the mixture or concentrate of the present invention, and once analyzed the results replaced some of the original chemicals established in the precedent of the present invention , achieving with its use to improve the results of inertization, sanitization and water repellent capacity of the MSW established in the precedent of the present invention, thus achieving homogenization in the chemical compound so that its application is proportional to the volume of MSW and not in direct relation to the amount of organic matter present in the MSW.
  • the grain size of the MSW should be as close as 6 mm, since it has been observed that when the grain size is larger than 6 mm, the final product is not very consistent and tends to crumble and / or break easily, while if the grain size is less than 6 mm, the MSW usually lose excess water complicating the mixing with the binders, water repellent, hardeners and inertizers and therefore making the final product more difficult.
  • homologation studies were carried out on the transformed product through the use of protocols previously established by the Environmental Protection Agency and studies of hardness, compaction and resistance
  • the process of industrial and integral transformation, at low cost of urban solid waste in construction material susceptible to human use under zero processing emissions to the atmosphere that benefits the environment is characterized by the use of dosing and application of a previously prepared concentrate with sanitizing chemicals, binders, water repellent and hardeners, and which will be applied according to the quantity and not to the characteristics of the content of the MSW which, although they vary from region to region, time of year, according to the percentage of organic and inorganic material that integrate it, the amount of humidity that the area may have, and the type of product that is intended to be produced by transforming the MSW, since it has been possible to homogenize the content of the MSW through the grinding described in the present invention.
  • This process of transformation of the MSW is carried out through a simple process that consists of:
  • the trucks pour the MSW into a bulk unloading platform, this platform has a greater reception volume capacity so that several trucks unload everything and do not keep anything, then plant personnel using bob cats, pour the RSU in the thrommel feeder worm, which serves as a bag-breaker method, so that the RSUs then fall into a magnetized tunnel with a 6m long flat conveyor belt for the attraction of the metallic elements that the RSUs arrived at the plant can contain, (It is sought to separate metal particles whose size is greater than 2 cm 2 , particles that can be reused in the metallurgical industry, through its commercialization by weight, being in addition, the removal of said particles, beneficial to the crushing machinery).
  • the remaining waste passes through a conveyor belt for the beginning of the grinding that occurs in three stages, to achieve an adequate granometry or granulometry, using and avoiding the loss of the liquids that the RSU themselves have in their consistency
  • the grain size obtained in the third grinding must be as close to 6 mm, since it has been observed that when the grain size is larger than 6 mm, the final product is not very consistent and tends to crumble, while yes the grain size is less than 6 mm, the MSW usually lose excess water complicating the mixing with binders, water repellent, hardeners and inertizers.
  • ground material moistened with its own leachate is introduced through conveyor belts to a vibrating screen, to homologate the granulometry by vibration and use of an arm moving counterclockwise, so that said material is cast through a metal mesh that serves as a strainer to ensure that the materials that are to be concentrated in the receiving hopper are of the same grain size and density, so that they are later transferred to the mixers -revolvedoras, in which they will be incorporated from silos, according to the type, characteristics and quantity of MSW that are being transformed.
  • the MSW from the screening are moved to the mixing stage and consists of 3 subsystems.
  • g.1 .- Giraffe-type canyon lift which is a system designed to carry and transport bulk MSW processed in the milling stage after the screening stage, which runs vertically from the screening area to the feeder silos, and that constantly and permanently deposit the MSW to the feeder silos.
  • g.2.- Processed product feeder silos which are tanks designed to contain the MSWs processed in the grinding stage and after the screening stage, said tanks are manufactured with 18 gauge alloy steel, tugstene and surgical steel, with dimensions of 22 m 3 , with 6 HP motovibrators and rotating arms to prevent the ground and subsequently screened product from clogging or compacting, with a team weight of 3000 kg.
  • the MSW on average are usually composed of values between 37 to 41% for inorganic matter and between 53 to 63% of organic matter
  • the percentage of organic matter present in the MSW will be taken as a reference to determine the amount of each of the inerting, sanitizing and water-repellent, in this way if you have the greatest amount of organic matter present in the MSW, the greatest amount of inerting, sanitizing and water-repellent established in the present invention will be added, while if you have the The lowest amount of organic matter present in the MSW, the least amount of inerting, sanitizing and water repellent established in the present invention will be added and for intermediate levels of organic matter concentration present in the MSW, the amount that will be added inertizing, sanitizing and Water repellent will be made proportionally, mention is made only of the amounts of inertizers, sani It has to be used and water repellent, taking into account that said inertizers and sanitizers used in the present invention will also
  • the usefulness of knowing the composition of the MSW is essential for this Process of Transformation of the MSW as it serves a number of purposes, among which the feasibility studies of the transformation, use of chemicals and sanitizers suitable for its transformation and recycling, as well as its feasibility of treatment, research, waste identification, study of management management policies, etc.
  • composition values correspond.
  • the factors on which the composition of the MSW depends are relatively similar to those that define their level of generation. Modification was made in the content of the chemical mixture through a new combination of the hydrophobic, sanitizing and hardener elements separately in random order which are prepared previously achieving a combined powder and another combined in liquid and are applied at the time that the RSUs are introduced into the mixers after grinding and the quantity of each element has been approved according to the volume of solid waste, stating that it will no longer vary according to the type of RSU that is being transformed, since always they will be within the pre-established parameters in the general formulation, which is described below:
  • the last phase of the process refers to the stage of packing, palletizing and storage.
  • the process of the present invention allows to transform the MSW in an industrial, large-scale way with accuracy and precision of the grinding and crushing of the MSW that gives the advantage that by obtaining the required density and particle size, the products obtained they have their own and ideal characteristics to be used in the construction industry with the certainty that durability, compaction, permeability, stiffness, hardness are optimal to give excellent results, since when granting the resistance and compaction that occurs through this process
  • the resulting product has the main characteristic of being 1.9 times more compact and resistant than a traditional partition according to studies carried out by the Mexican Institute of Cement and Concrete (IMCYC), allowing these products to be applied successfully in the industry of the construction, thus giving added value to the MSW, making them a key piece for the development roll of ecological and sustainable construction.
  • the process of the present invention is developed in an automated manner by 90%, which allows time and movement to be efficient, as well as to give exact results in the particle size and density of the material to be processed, which leads to lower transformation costs, decreases Dosing errors of sanitizing and inertizing chemicals, as well as giving accuracy of the required granulometry and density requirements, fundamental in the process of fusion and agglomeration of MSW particles.
  • the liquids contained in the MSW are vital and essential for the correct performance of this technology since the chemical nutrients and biological properties contained in said liquids allow the chemicals, sanitizers and other substances that are dosed in the process, react as expected in order to obtain an inert, sanitized product, with the desired molecular compaction and fusion, and especially with subsequent water savings.
  • the chemical and sanitizing conglomerate is prepared in advance by a simple process in which said powder elements are mixed and concentrated in super bags, being prepared and ready to be poured into the mixing process directly to the pot of the mixer simulating the effect of an hourglass, thus avoiding the explosive exit of micro particles of material, in addition to that in said super bags the exact amount of mixture of chemical, sanitizing, hydrophobic, inertizing product is clearly specified , binder, hardener, which is required per ton of MSW to be processed, in order to obtain an inert product both chemically and biologically with optimum durability, compaction, permeability, stiffness and hardness for use in the construction industry In addition to that it perfectly clarifies the cost that has to be paid to transform each ton of MSW, perm It is necessary to determine exact budgets and costs for this concept.
  • the determination of the compaction required to be given to the finished product is given as follows: For the traditional block or partition type pieces there is a capacity of 30 to 40 partitions per cycle, 35,000 partitions per day of 8 hours a pressure of 360 to 550 kg per cm 2 is used for an interval of 15 (fifteen) seconds, to obtain a consistent, healthy, hard, compact, rigid product that does not break and chemically and biologically inert
  • a pressure of 3 to 3.5 Ton / cm 2 is used for an interval of 15 (fifteen) seconds, to obtain a consistent, healthy, hard, rigid product that does not break, and chemically and biologically inert;
  • the process of the present invention results in a stable product with adequate hardness, rigidity and compaction, in addition to the same, it is a clean product of particles that at first sight is pleasant, and not very different from a piece of brick or Traditional partition, which will allow for no complications in its introduction and positioning in the construction industry market.
  • insects The presence of insects, birds, rodents, dogs, etc .;
  • this project allows the reduction of GHG generation in the order of 900 kilograms of carbon dioxide per 1,000 kilograms of MSW;
  • This project allows the transformation of a ton of MSW into 208 adocretes of various shapes and models of 5.5 kg each, which we have called ADOCRETOS.
  • This project operates with a production line
  • This project has the possibility of transforming 200 tons per day equivalent to 6,000 tons of MSW per month, per production line
  • the environment will cease to be environmentally and visually contaminated, ceasing to have sources of infection that could be generated by the decomposition of the garbage;
  • the final product is a chemical and biologically inert product, without metamorphosis, without change in its structure, which does not affect the environment and does not allow the proliferation of animals and rodents, as well as it can be 100% reusable in different ways: as bricks, partitions or partitions of different sizes, for the construction of schools, houses of social interest, etc. at low costs;
  • the final product can be used as adocreto for the construction of sidewalks, pedestrian paths, sidewalks, bike paths, etc.
  • the final product can be useful for the manufacture of panels of different types and sizes for the construction industry (prefabricated);
  • the final product may be useful for the manufacture of road separators
  • the final product can be useful for the manufacture of deep drainage and sewer pipes.
  • Solid Waste passes from a simple disposition to a chemical, industrial engineering process under zero processing emissions into the atmosphere that benefits the environment that brings with it the following positive characteristics:
  • Figure 1 shows in general the Process of Industrial and Integral Transformation, at Low Cost of Urban Solid Waste in Building Material Susceptible for Human Use Under Zero Processing Emissions to the Atmosphere that Benefits the Environment.
  • the trucks pour the MSW into an unloading platform (1) once they are collected at home, with the use of a bobcat the Feeding Worm (2) is fed, which in addition to serving as a receiver, its endless screw when turning is breaking the plastic bags inside which are the RSU.
  • the RSUs fall into a magnetized tunnel (3) with a 6 m long flat conveyor belt to attract the metallic elements that the RSUs arrived at the plant can contain, (it is sought to separate the metallic particles whose size is greater than 2 cm 2 , particles that can be reused in the metallurgical industry, through their commercialization by weight, being also the removal of said particles, beneficial to the crushing machinery).
  • a flat band (4) is continued for the pepenadores to segregate the recyclable material, and separate it into super bags so that they are put up for sale in bulk, according to the material in question such as plastic bags , containing the MSW, pet, glass, metal, plastic, iron, this conveyor belt facilitates the work of selecting recyclable material.
  • the remaining waste passes through conveyor belts to the first double shaft Shcredder type mill (5), to reduce its particle size by recovering the leachates that could produce the RSU, then the RSU milled by the double shaft (double shaft) pass through a conveyor belt (6) to a second grinding where a rotary hammer crusher with knife grill with adjustable opening sieve for multiple materials with rehabilitable maces and capacity of 15 Ton / hour (7) is used, the material resulting from the second grinding, it then passes through a conveyor belt (8) to a third Hammer Crusher with open knife type screen at 1/8 ”, and extraction hood, 125 HP motor, and capacity of 15 Ton / hour (9), the crushed material passes through a screening process through the use of vibration, in order to corroborate the homogenization of the granulometry, then the material c With the required particle size, a giraffe-type elevator (10) is introduced that will deposit the crushed MSW to a feeder silo enabled with a vibration process, and by means of a track and belt it will feed the
  • Figure 2 shows one of the uses that can be given to the reconverted product through the process of industrial and integral transformation, at low cost of solid urban waste in construction material susceptible for human use under zero processing emissions to the atmosphere that benefits the environment and that is represented in blocks for the construction of housing and / or offices in various forms and measures, which are usually used in civil engineering.
  • Figure 3 shows one of the uses that can be given to the reconverted product through the process of industrial and integral transformation, at a low cost of solid urban waste in construction material susceptible for human use under zero atmospheric emissions processing It benefits the environment and is represented in adocreto, pavers and trimmings of different shapes and sizes.
  • Figure 4 shows one of the uses that can be given to the reconverted product through the process of industrial and integral transformation, at a low cost of solid urban waste in construction material susceptible for human use under zero atmospheric emissions processing which benefits the environment and is represented on sidewalks and pedestrian paths.
  • Figure 5 shows one of the uses that can be given to the reconverted product through the process of industrial and integral transformation, at low cost of solid urban waste in construction material susceptible to human use under zero processing emissions to the atmosphere that benefits the environment and that is represented in road separators.
  • Figure 6 are photos of the product obtained by the process of the present invention, which illustrates the Examples of embodiment.
  • Figure 7 is a graph of the data obtained from losses for the analyzed samples of total solids (partition 91.8% and 89.5% bulk) and volatile solids (12.6% partition and 27.2% code).
  • the process of industrial and integral transformation, at low cost of urban solid waste in construction material susceptible to human use under zero processing emissions to the environment that benefits the environment is designed to transform the MSW of communities, cities and metropolises , in an industrialized way, so that the design, construction and operation of the plant, machinery and technology, will be according to the magnitude and density of population of the communities and cities that apply this technology, for which the factor number of inhabitants multiplied by the amount of MSW that are produced multiplied by 365 days that the technology would operate.
  • the percentage of organic and inorganic MSW is taken into account, the first ones must have a transmutation of their physical and molecular integrity, ensuring that the cellular microorganisms that integrate them are completely neutralized, annulled and annihilated to avoid that in the future they can decompose their organic substances, mutate or degrade causing damage to the people who use it, so it is important to determine that the amounts of mixture and / or concentrate of chemicals, sanitizer, inertizers, hardeners , hydrofugants and binders are made based on the results obtained from previous studies of the composition of MSW, so that said mixture or concentrate has the necessary elements of inertization and sanitization.
  • the MSW on average are usually composed of values of between 37 to 41% for inorganic matter and between 53 to 63% of organic matter, when making a previous selection of inorganic materials, it is considered that the value of Inorganic materials vary and decrease, leaving a percentage of 17 to 21%, so the increase in the percentage of organic matter present in the MSW will be taken as a reference to determine the content of the mixture or concentrate used in the present invention,
  • the percentage of each of the inerting, sanitizing and water repellent agents established in the precedent of the present invention is directly linked to the greater amount of organic matter present in the MSW, Therefore, taking up the research practice, alternative chemicals with suitable properties were used to be used in the mixture or concentrate of the present invention, and once analyzed the results replaced some of the original chemicals established in the precedent of the present invention , achieving with its use to improve the results of inertization, sanitization and water repellent capacity of the MSW established in the precedent of the present invention, thus achieving homogenization in the chemical compound so that its application is proportional to the volume of RSU and not in direct relation to the amount of mate Organic water present in the MSW.
  • the grain size of the MSW should be as close as 6 mm, since it has been observed that when the grain size is larger than 6 mm, the final product is not very consistent and tends to crumble and / or break easily, while, if the grain size is less than 6 mm, the MSW usually lose excess water complicating the mixing with the binders, water repellent, hardeners and inertizers and therefore making the final product more difficult.
  • homologation studies were carried out on the transformed product through the use of protocols previously established by the Environmental Protection Agency and studies of hardness, compaction and resistance
  • the process of industrial and integral transformation, at low cost of urban solid waste in construction material susceptible to human use under zero processing emissions to the atmosphere that benefits the environment is characterized by the use of dosing and application of a concentrate previously prepared with sanitizing chemicals, binders, water repellent and hardeners, and which will be applied according to the quantity and not to the characteristics of the content of the MSW which, although they vary from region to region, from time of year, of according to the percentage of organic and inorganic material that integrate it, the amount of humidity that the area may have, and the type of product that is intended to be produced by transforming the MSW, since the content of the MSW has been homogenized by grinding described in the present invention.
  • binders refers to materials capable of joining fragments of one or more substances and giving cohesion to the whole by exclusively physical methods;
  • the main ones that apply to this process are, silica bentonite, calcium bentonite, cement, lime and silica sand.
  • water repellents they are products that increase the water repellency of the material surface without reducing water vapor permeability.
  • the hydrofugante powder is dosed in the transformed material and adheres to it forming a coating that prevents the entry of water, but allows the passage of steam, thereby allowing the material to “breathe” and be thermal.
  • the water repellents used in this process are: bentonites powder.
  • sanitizers germicides or disinfectants
  • they are antimicrobial agents that are applied and dosed to the transformed material in order to destroy microorganisms, and reduce their number to a safe level, without damaging other life forms, and should not be corrosive
  • Sanitizers that we use in this process are: cement, lime, silica sand, and 3% ionized water, the latter can be obtained through an electrolysis process.
  • Hardeners are agents that are dosed and applied to the transformed material to fuse, and integrate the particles, and molecules that were separated due to milling process, through the use of these agents it is sought to accelerate, molecular fusion, drying, set and give consistency to the processed product.
  • Hardeners that we will apply to this process are: cement, lime, calcium bentonite, silica bentonite and silica sand.
  • inertizers agents that are dosed and applied to the transformed material to inactivate or minimize their potential chemical and biological nature, for their subsequent final disposal, it is achieved by chemical treatment by adding reagents that when reacting with the unwanted active agents contained in the Waste forms other harmless and chemically stable substances.
  • the inerting agents that we will apply to this process are: cement, lime, calcium bentonite, sodium bentonite and silica sand, 3% ionized water.
  • Products manufactured using the procedure described here can be subjected to physical-chemical tests to determine if they are susceptible to human use without any biological / sanitary risk.
  • the physical-chemical tests may consist of:
  • Solids This test determines the amount of solids according to the degree of heating. Total solids being the amount of solids left after the evaporation of water. And volatile solids the amount of solids that are lost after calcination for 15 minutes at 550 ° C. It should be noted that the loss of mass could cause weakening of the mechanical resistance. As regards total solids, This data indicates the humidity of the sample at the time of the test, that is, water content.
  • Biochemical Oxygen Demand (BOD). It gives us reference to how much organic matter is present in the product.
  • COD Chemical Oxygen Demand It is the amount of oxygen demanded in the oxidation of organic and inorganic matter. The higher the number, the more pollution it will have.
  • Coliforms Bacteria present in the product being mainly of fecal origin.
  • the MSW were collected, in which the process described in the present invention is followed, the amount of MSW processed was 200 tons.
  • the following quantities of binders, water repellent, hardeners and inertizers were added during the process:
  • ESSSA treated the material as compost, that is, performed the corresponding compost procedures in force.
  • the analyzes consisted of the determination of the following parameters: pH, temperature, volatile total solids, chemical oxygen demand, total nitrogen, total phosphorus, total coliforms and fecal coliforms.
  • the product complies with the dimensions and strength of the Mexican standard NMX-C-441 -ONNCCE-2013 Construction industry- Masonry- Blocks, partitions or bricks and partitions for non-structural use- Specifications and Test Methods.
  • COD Chemical Oxygen Demand
  • the product obtained by the process of the present invention is a chemically and biologically inert product, since in almost all the parameters evaluated there is an absence or, in any case, presence in minimum amount of pollutants or microorganisms, so that the standards established by institutions such as: EPA, SEMARNAT, SSA, etc., in charge of regulating the index of permissible pollutants are met.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Processing Of Solid Wastes (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

L'invention concerne un procédé commençant avec la collecte et continuant avec le dépôt des résidus solides urbains (RSU) dans l'usine de traitement pour être transformés le même jour de leur collecte et dépôt, en un matériau de construction. Une première modalité de la présente invention concerne un processus de transformation industrielle et intégrale à bas coûts des RSU en un matériau de construction à usage humain au cours d'un traitement zéro émission dans l'atmosphère. Ledit processus est bénéfique à l'environnement et comprend les étapes suivantes : a) collecte, alimentation et dépôt des RSU; b) présélection et séparation; c) broyage primaire avec un broyeur primaire de type à axe double (arbre double), de type déchiqueteur à couteaux pour plusieurs matériaux à enveloppes interchangeables, équipé de deux rouleaux dentés à vitesse différentielle et hotte d'extraction; d) broyage secondaire au moyen d'un broyeur 36" x 30" de type à marteaux rotatifs avec grille à couteaux avec un crible d'ouverture réglable pour plusieurs matériaux à masses réhabilitables; e) broyage tertiaire avec un broyeur 36" x 30" à marteaux avec crible de type couteaux ouverts à 1/8", et hotte d'extraction; f) criblage; g) transport des RSU broyés et passés au crible vers les silos d'alimentation; h) mélange, désinfection et inertisation; i) pressage et broyage; j) séchage et ré-inertisation; et k) dépôt final du produit. Dans une autre modalité, la présente invention concerne un produit utile dans l'industrie de la construction sous forme de brique classique, brique de béton, bloc solide, bloc à deux creux, pavé de béton de formes et modèles différents, panneaux préfabriqués, séparateurs de chaussées, pistes cyclables, trottoirs ou chemins pour piétons etc.Ledit produit est inerte chimiquement et biologiquement et comprend des RSU et pour chaque tonne de RSU utilisée pour son élaboration, il comprend en outre de manière proportionnelle 40 à 60 Kg de ciment, 100 à 180 Kg de chaux, 10 à 30 Kg de bentonite calcique, 10 à 30 Kg de bentonite sodique, 10 à 30 Kg de sable siliceux, 5 à 15 litres d'eau ionisée à 3% dilués dans 90 litres d'H2O.
PCT/IB2019/053752 2018-05-07 2019-05-07 Procédé de transformation industrielle et intégrale, à bas coûts des résidus solides urbains en un matériau de construction à usage humain WO2019215622A2 (fr)

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MXMX/A/2018/005746 2018-05-07

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Cited By (3)

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CZ308706B6 (cs) * 2020-01-03 2021-03-10 SMART TECHNIK a.s Způsob zpracování tříděného komunálního odpadu
GB2592418A (en) * 2020-02-27 2021-09-01 Mcdonald Kane Barry Recycling process
CN114535268A (zh) * 2022-03-30 2022-05-27 宁波绿宝环保科技有限公司 一种建筑渣土回收处理方法及其回收处理系统

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US5322792A (en) * 1991-04-18 1994-06-21 Tucker Hughes, Inc. Process and machines for transforming household waste
US5588947A (en) * 1994-11-29 1996-12-31 Entact Corporation Apparatus and method for treating hazardous waste material
JPH10314698A (ja) * 1997-05-16 1998-12-02 Nippon Kayaku Co Ltd 重金属含有廃棄物用処理剤及び重金属含有廃棄物の安定化処理法
US8337381B2 (en) * 2006-09-22 2012-12-25 Jose Alberto Ochoa Disselkoen, legal representative Disposal process for residential solid waste
MX2010002843A (es) * 2010-03-12 2011-09-15 Maguey Fernando Javier Rocha Proceso integral industrializado para la transformacion total de residuos solidos domiciliarios en material de construccion susceptible de uso humano.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ308706B6 (cs) * 2020-01-03 2021-03-10 SMART TECHNIK a.s Způsob zpracování tříděného komunálního odpadu
GB2592418A (en) * 2020-02-27 2021-09-01 Mcdonald Kane Barry Recycling process
WO2021170800A1 (fr) * 2020-02-27 2021-09-02 Kane Barry Macdonald Procédé de recyclage de déchets
CN114535268A (zh) * 2022-03-30 2022-05-27 宁波绿宝环保科技有限公司 一种建筑渣土回收处理方法及其回收处理系统
CN114535268B (zh) * 2022-03-30 2023-07-14 宁波绿宝环保科技有限公司 一种建筑渣土回收处理方法及其回收处理系统

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