Abstract: A positive electrode active material with high charge and discharge capacity is provided. A novel positive electrode active material is provided. The positive electrode active material is manufactured in such a manner that after a cobalt compound (also referred to as a precursor) containing nickel, cobalt, and manganese is obtained by a coprecipitation method, a mixture obtained by mixing a lithium compound and the cobalt compound is heated at a first temperature; after the mixture is ground or crushed, heating at a second temperature that is a temperature higher than the first temperature is further performed; and after an additive is mixed, third heat treatment is performed. The first temperature is higher than or equal to 400° C. and lower than or equal to 700° C. The second temperature is higher than 700° C. and lower than or equal to 1050° C.

Abstract: According to an embodiment of the disclosure, a desalination system includes a latent heat exchanger, a hydroclone, a compressor, and a quiescent vertical column. The latent heat exchanger is configured to receive saltwater. The latent heat exchanger includes tubes with an interior that are configured to circulate supersaturated brine with suspended salts. The hydroclone is configured to receive a flow from the latent heat exchanger. And, the hydrocodone has a flow that is substantially steam exiting the top and a flow that is substantially liquid exiting the bottom. The compressor that receives at least a portion of the flow that is substantially steam exiting the top of the hydroclone. An output of the compressor recirculating at least a portion of the flow back to the latent heat exchanger.

Abstract: Disclosed is a method for controlling the amount of leakage of per- and polyfluoroalkyl substances (PFAS) or other contaminants from resin beds during water purification processes that employ multiple vessels or banks of PFAS ad/ab-sorbing material such as ion exchange resins. The method comprises: providing at least two vessels (or at least two banks of vessels), each vessel containing a resin bed; and simultaneously passing the water source through the vessels in parallel. At start up and for a pre-determined period of time, the specific flow rates for passing the water source through the resin beds in the vessels (or banks of vessels) differ by at least 5%, preferably by at least 10%, more preferably at least 15%, and/or the volumes of resin beds in the vessels differ by at least 5%, preferably at least 10%, more preferably at least 15%.

Abstract: Provided is an apparatus for disinfecting water using a pulsed electric field, the apparatus including a chamber configured to direct a flow of water, a sensor disposed in the chamber configured to detect a quantity of particles and/or microorganisms in the flow of water, and an electric field generator including a pair of electrodes disposed in the chamber and a controller. The controller is configured to initiate generation of the electromagnetic filed in response to the detected quantity of microorganisms exceeding a predetermined threshold.

Abstract: A method for removing a heavy metal from water includes subjecting a microbial solution containing a liquid culture of a urease-producing bacterial strain and a reaction solution containing a manganese compound and urea to a microbial-induced precipitation reaction, so as to obtain biomineralized manganese carbonate (MnCO3) particles, admixing the biomineralized MnCO3 particles with water containing a heavy metal, so that the biomineralized MnCO3 particles adsorb the heavy metal in the water to form a precipitate, and removing the precipitate from the water.

Abstract: The present disclosure relates to the field of water treatment technologies, and in particular to a treatment method of a leachate from hazardous waste landfill site. The key points of the technical scheme were as follows: adding sodium carbonate to the leachate to obtain a calcium carbonate residue and a first waste liquid; adding hydrochloric acid to the first waste liquid to obtain a first mixed solution; heating the first mixed solution and introducing a given amount of chlorine gas into the first mixed solution while introducing air, to obtain a second waste liquid and a first mixed gas; introducing the first mixed gas into an alkaline liquid absorption tower; heating the second waste liquid to obtain an evaporation condensate water and a concentrated liquid; centrifuging the concentrated liquid to obtain a sodium chloride wet salt and a centrifuged liquid.

Abstract: The present invention discloses a straight-line sewage treatment system for enhanced treatment of low-carbon-to-nitrogen ratio (C/N) domestic sewage, including a sewage intake tank, an enhanced denitrification tank through a pipeline, an effluent outlet of the enhanced denitrification tank, an effluent pipe, a first storage tank, a second storage tank, and a disinfection tank.

Abstract: A method for treating wastewater containing ertriazole compounds is provided. Hypochlorous acid (HOCl) having a neutral to slightly acidic pH value is added to the wastewater containing triazole compounds for reaction, thereby effectively reacting more than 90% of triazole compounds.

Abstract: A system for wastewater treatment comprises a membrane filtration device which receives the stream of pre-treated wastewater stream from the pre-treatment unit and generates a reject stream which is supplied to an electrochemical oxidation reactor which generates a reactor effluent stream which is divided into a recirculated wastewater stream that is recycled back to the equalization tank and a reactor discharge stream that is discarded from the system. The target fraction ratio between the volume of the recirculated wastewater stream and the volume of the reactor discharge stream is controlled based on the target total dissolved solids amount in the wastewater to be treated, on the amount of regulated organic substances in the wastewater which are treated by the electrochemical oxidation reactor to increase the efficiency of the electrochemical oxidation reactor to a target value and on the composition of the wastewater being discharged from the system.

Abstract: Method for treating aqueous effluents, comprising the following steps: a) simultaneously feeding the aqueous effluents into at least two basins comprising at least one upstream basin and at least one intermediate basin in the flow direction of the aqueous effluents, the basins being in fluid connection and in series with one another; b) biologically treating, in a fluid bed, the aqueous effluents to be treated in the at least two basins; c) transferring at least one portion of the biologically treated aqueous effluents to a de-aerator; d) de-aerating the biologically treated aqueous effluents in the de-aerator; e) recirculating at least one portion of the de-aerated aqueous effluents to at least the upstream basin and preferably the at least two basins.

Abstract: In a water treatment system, a pretreatment chemical is added to water stream in a pretreatment process including a coagulation, flocculation and separation to reduce amount of dissolved and/or particulate matter in the water stream. Hydrophobic conditions in the water stream are monitored upstream or downstream from adding the pretreatment chemicals. Dosing of the pretreatment chemical to the water stream is controlled based on the monitored hydrophobic conditions. Thereby a membrane fouling in subsequent membrane filtration stage can be minimized.

Abstract: A method of treating mining effluents containing at least one of nitrogen or cyanide species, the method comprising injecting ozone in the mining effluent in successive treatments performed at different pH. Also, a method of treating mining effluents with bromide and ozone. Also, a method of treating mining effluents containing cyanates with ozone at a relatively low pH.

Abstract: The present invention generally relates to systems and methods for the separation and removal of methane from an agricultural methane digestate, for example, agricultural waste. The systems and methods include an extraction system that exposes the methane digestate to agricultural commodities and a microbial additives resulting in products that can be recycled.

Abstract: The present invention relates to a method for producing mineral material suitable for use as raw material in a glass melting method, comprising: supplying a main tank with a vitrifiable mixture of materials comprising recycling materials comprising organic matter; melting the vitrifiable mixture of materials in the main tank using submerged burners to obtain a melt; and introducing a solid oxidant into the melt.

Abstract: A method of making a glass product includes: melting a batch of raw materials to form a glass melt in a melting tank; heating the batch and/or the glass melt using two or more electrodes, the electrodes including an electrode material and heating the batch and/or the glass melt includes operating the electrodes at a current frequency of at least 1,000 Hz and at most 5,000 Hz; withdrawing the glass melt from the melting tank; and forming the glass melt into the glass product.

Abstract: A method for controlling a plant for melting a raw-material composition, suitable for obtaining mineral wool, cullet, textile glass yarns and/or flat glass or container glassware, which includes a melting chamber suitable for melting the composition, wherein the composition includes at least one wet mixture of mineral wool and/or biomass, and the method includes controlling at least one physical variable that has an impact on the output of the melting chamber, the controlling being carried out as a function of the moisture content of the composition and/or of the wet mixture, as measured before introduction of the composition and/or of the wet mixture into the melting chamber.

Abstract: A glass container blank mold includes a mold portion having a neck end, an opposite baffle end, and a molding surface located between the ends that partly defines the shape of an exterior surface of a glass parison formed in the mold. Axial cooling channels formed within the mold portion extend axially alongside the molding surface and radially outboard of the molding surface. Heat block channel locators are formed on one of the ends of the mold portion. Each locator is visibly discernible from the end on which the locator is formed and radially inboard of the cooling channels. Each locator has a thermally insignificant depth and is located such that, when a heat block channel having a thermally significant depth is formed at the locator, heat transfer characteristics of the mold portion are altered between the molding surface and at least one of the cooling channels.

Abstract: A device and method for adjustable heat dissipation in a channel cooling section are provided. The device for heat dissipation may include: a plurality of flat tubes arranged adjacent to each other inside the channel cooling section. Each of the flat tubes may be surrounded by a heater on an outer ring. A side insulation structure may be provided on both sides of each of the flat tubes, and a top insulation structure may be provided at a top of each of the flat tubes. The method for heat dissipation may include performing a first disassembly on the each section of flat tube one by one in sequence.

Abstract: An ionically conductive glass (or glassy) monolithic preform having a certain shape, size, and dimension may be made from a monolithic precursor material (e.g., an ingot or boule of ion conductive glass), generally of a different shape and size.

Abstract: A method of shaping a glass sheet includes providing a glass sheet. The glass sheet is heated to a temperature suitable for shaping. The glass sheet is deposited on a first bending tool. The glass sheet is disposed over a first segment of the first bending tool. The first segment at least partially defines a shaping surface of the first bending tool. The first segment of the first bending tool is moved from a first position to a second position to cause contact with a first portion of the glass sheet. The contact with the first portion of the glass sheet adjusts a position of the glass sheet relative to the shaping surface of the first bending tool. The glass sheet is shaped on the first bending tool.

Abstract: The present invention relates to a method for producing crystallized glass, including: (a1) melting a glass raw material to obtain molten glass; (a2) molding the molten glass into a predetermined shape by a molding unit to obtain a glass molded body; (a3) slowly cooling the glass molded body to obtain a raw glass plate containing at least one of a crystal nucleus and a separated phase; and (a4) heat-treating the raw glass plate containing the at least one of the crystal nucleus and the separated phase to cause crystal growth so as to obtain the crystallized glass.

Abstract: The present invention discloses a fabrication method and use of a ?40 mm large-size and high-contrast fiber optic image inverter, belonging to the field of manufacturing of fiber optic imaging elements. The light-absorbing glass for preparing the ?40 mm large-size and high-contrast fiber optic image inverter consists of the following components in molar percentage: SiO2 60-69.9, Al2O3 1.0-10.0, B2O3 10.1-15.0, Na2O 1.0-8.0, K2O 3.0-10.0, MgO 0.1-1.0, CaO 0.5-5.0, ZnO 0-0.1, TiO2 0-0.1, ZrO2 0.1-1.0, Fe2O3 3.0-6.5, Co2O3 0.1-0.5, V2O5 0.51-1.5 and MoO3 0.1-1.0. The fiber optic image inverter has the advantages of low crosstalk of stray light, high resolution and high contrast.

Abstract: A method for producing a preform of an anti-resonant hollow-core fiber, which has a hollow core extending along a fiber longitudinal axis, and a cladding region surrounding the hollow core and includes at least one anti-resonance element. The method includes (a) providing a cladding tube having a cladding tube inner surface and a cladding tube outer surface, at least one anti-resonance element preform being arranged at the cladding tube inner surface, (b) providing an overlay tube including an overlay tube inner surface, the overlay tube having an inner diameter larger than an outer diameter of the cladding tube, (c) arranging the cladding tube inside the overlay tube, so that the overlay tube inner surface surrounds the cladding tube outer surface, and (d) adding the overlay tube to the cladding tube, so that the overlay tube inner surface connects to the cladding tube outer surface.

Abstract: In the process comprising manufacturing a glass fine particle deposit (soot) by injecting glass fine particles generated with a burner for glass fine particle synthesis to a starting material rotating around its central axis as an axis of rotation; and sintering the glass fine particle deposit to vitrify it into transparent glass by suspending and heating the glass fine particle deposit in a furnace core tube, it is characterized that a product of a time period (min) during which a part of the glass fine particle deposit is heated in a heating zone in the furnace core tube and a linear speed (m/min) of sintering gas flowing in the furnace core tube is 15.5 (m) or more.

Abstract: There is disclosed an antibacterial glass composition, a preparing method of an antibacterial glass coating film using the same and an electric home appliance including the same. The antibacterial glass composition according to the present disclosure and the antibacterial glass coating film using the same are applied to an electric home appliance, thereby exhibiting excellent antibacterial properties and heavy metal elution safety, and exhibiting excellent transmittance (70% or more) when applied to a transparent glass substrate.

Abstract: An object is to provide an optical glass with a near-infrared absorbing function that maintains constant and high transmittance in a visible light range and also has excellent oblique incidence characteristics as well as excellent durability, heat resistance, and weather resistance, and to provide a near-infrared cut filter, a glass element for press molding, an optical element blank, and an optical element including the same. Provided is an optical glass including a glass composition as a base containing at least Yb2O3 and B2O3 as essential components, the optical glass characterized in that a content of Yb2O3 is 5% to 60% by mass, a content of B2O3 is 10% to 50% by mass, and when a thickness of the optical glass is 2.5 mm, average transmittance in a wavelength range of 925 to 955 nm is 0% to 70%, and average transmittance in a wavelength range of 965 to 985 nm is 0% to 50%.

Abstract: A hot-formed, chemically prestressable glass article having a low percentage of crystals or crystallites, in particular a plate-shaped, chemically prestressable glass article, as well as to a method and a device for its production are provided. The glass article has a composition including the components SiO2, Al2O3, and Li2O and a content of seed formers (ZrO2, SnO2, and TiO2) of at least 0.8 wt %, as well as at most ten crystals, including crystallites, per kilogram of glass, which have a maximum diameter greater than 1 ?m and up to at most 5 ?m.

Abstract: The disclosure relates to highly temperable colored glass compositions. The colored glass compositions have high coefficients of thermal expansion and high Young's moduli that advantageously absorb in the ultraviolet and/or blue wavelength ranges. Methods of making such glasses are also provided.

Abstract: Disclosed are: an enamel composition which has excellent cleaning functionality, and which, when used to form an enamel coating on a metal base material, ensures excellent thermal shock resistance and durability by suppressing the generation of defects caused by gas generation; a method for manufacturing same; and kitchenware using same. In addition, the enamel composition according to the present invention has excellent thermal shock resistance and durability due to having a component system in which glass-forming components and catalytic components are optimized.

Abstract: A lithium aluminum silicate (LAS) glass-ceramic has an average coefficient of thermal expansion (CTE) in a range from 0 to 50° C. of at most 0±0.1×10?6/K and a thermal hysteresis at least in a temperature range from 15° C. to 35° C. of <0.1 ppm. The LAS glass-ceramic includes (in mol % based on oxide): SiO2 60-<70; Li2O 7-9.6; MgO+ZnO>0.5-1.5; R2O>0.5, where R2O is Na2O and/or K2O and/or Cs2O and/or Rb2O; and nucleating agent with a content of 1.5 to 6 mol %. The nucleating agent is at least one component selected from the group consisting of TiO2, ZrO2, Ta2O5, Nb2O5, SnO2, MoO3, WO3 and HfO2.

Abstract: A transparent structure may have multiple layers, such as an inner layer and an outer layer, which may be formed from glass. The transparent structure may have a large, curved surface with compound curvature and high geometric strain and may include one or more layers. To apply a physical vapor deposition coating with uniform thickness on a curved surface, cathode power may be modulated during the deposition, a mask having an opening with a curvature matching the curved surface may be used, a cathode shape may be varied, the cathodes may sputter the coating outwardly toward the curved surface, a magnetic field may modulate the flux produced by the cathodes, and/or the pressure and/or flow of gas may be adjusted. By modifying the physical vapor deposition coater in one or more of these ways, the coating may have a uniform thickness, and therefore a uniform color, across the curved surface.

Abstract: A cooking apparatus includes a main body, and a cooking plate mounted on an upper surface of the main body to cook a cooking material. The cooking plate includes a base material, a diamond-like carbon (DLC) coating layer formed on an upper surface of the base material, to contact a cooking container when the cooking container is placed on the cooking plate, and an adhesive layer interposed between the base material and the DLC coating layer, and including at least one of Si and SiOx.

Abstract: A resin coating device for coating a surface of a glass fiber, includes: a point having a point hole; a die disposed directly below the point and including a first alignment portion, a second alignment portion, and a first die hole; and a first resin supply path. The second alignment portion is disposed below the first alignment portion. The first alignment portion includes a first diameter-reduced portion, and a first land portion disposed, connected to the first diameter-reduced portion, and having a constant diameter in the traveling direction. The second alignment portion includes a second diameter-reduced portion, and a second land portion, connected to the second diameter-reduced portion, and having a constant diameter in the traveling direction. The first diameter-reduced portion, the first land portion, the second diameter-reduced portion, and the second land portion are each a part of the first die hole.

Abstract: A method of producing a synthetic carbonated mineral component in a cement manufacturing plant, includes providing a carbonatable substance from an external source, introducing the carbonatable substance into an exhaust gas installation of the cement manufacturing plant for contacting the carbonatable substance with CO2 enriched exhaust gas, carbonating the carbonatable substance by reacting the carbonatable substance with CO2 contained in the CO2 enriched exhaust gas, thereby obtaining the synthetic carbonated mineral component, and removing the synthetic carbonated mineral component from the exhaust gas installation.

Abstract: A basic substance for the production of a building material includes at least one additive for influencing the properties and at least one filler which serves as a basic material. The basic substance is characterized in that the at least one additive includes nanoparticles and in that the at least one filler includes desert sand. Also related are a corresponding substance mixture, a corresponding concrete, and a corresponding method for producing a substance mixture which can be used as a building material.

Abstract: Provided is a method of producing a roadbed material from which less hexavalent chromium leaches out through use of a crushed product of a cementitious hardened body containing hexavalent chromium as a raw material. The method includes a carbonation treatment step of subjecting the crushed product of the cementitious hardened body to carbonation treatment with a carbon dioxide-containing gas having a temperature of 50° C. to 140° C. and a water content of 1.5% or more to obtain the roadbed material from which less hexavalent chromium leaches out than before the treatment. Preferably, the method includes, before the carbonation treatment step, a crushing step of crushing the cementitious hardened body to obtain a crushed product consisting of grains having a grain size of 100 mm or less at a ratio of 50 mass % or more and a grain size of 2.36 mm or less at a ratio of 1 mass % or more.

Abstract: This disclosure relates to methods of treating the surface of a metal casing, such as a casing used in a wellbore. The disclosure also relates to methods of increasing the bond strength between cement and a metal casing surface treated with a reactive organic compound.

Abstract: Disclosed is a hydraulic binder composition including: a hydraulic binder including at least one alumino-silicate compound, for example blast furnace slag, and an alkaline or sulfate activator and a maximum of 10 wt % of clinker, preferably between 0 and 10 wt % of clinker; a guanidine salt and/or a zinc salt; a polymer (P) including units of formulae (I) and (II):

Abstract: The invention relates to the use of a reactive liquid applied material for producing a roofing membrane, wherein the reactive liquid applied material has a liquid component and a powder component, wherein the powder component comprises a mineral binder system consisting of a plurality of mineral binders capable of forming an ettringite phase when combined, and wherein the liquid component comprises one or more aqueous polymer dispersions. According to the invention, the reactive material contains at least twice, preferably at least 2.5 times, in particular at least three times as much wt. % solids content of polymers as it does wt. % mineral binders, a proportion of a PU polymer is at most 30% of the solids content of polymers, relative to the total mass of the polymers, and at least one of the polymers used in the reactive roof waterproofing product has a Tg determined by DSC of less than ?20° C., preferably less than ?30° C.

Abstract: A cement-reduced construction composition comprises a) a cementitious binder comprising one or more calcium silicate mineral phases and one or more calcium aluminate mineral phases, and having a Blaine surface area of at least 3800 cm2/g, in an amount of 180 to 400 kg per m3 of the freshly mixed construction composition; b) a fine material having a Dv90 of less than 200 ?m, selected from alkali-activatable binders, rock powders and inorganic pigments, or mixtures thereof, in a total amount of 20 to 200 parts by weight, relative to 100 parts by weight of cementitious binder a); c) optionally, an extraneous aluminate source; d) a sulfate source; and e) a polyol in an amount of 0.3 to 2.5 wt.-%, relative to the amount of cementitious binder a). The composition contains available aluminate, calculated as Al(OH)4—, from the calcium aluminate mineral phases plus the optional extraneous aluminate source, per 100 g of cementitious binder a), in a total amount of at least 0.

Abstract: A method of producing polycrystalline Y3Ba5Cu8Oy (Y-358) whereby powders of yttrium (III) oxide, a barium (II) salt, and copper (II) oxide are pelletized, calcined at 850 to 950° C. for 8 to 16 hours, ball milled under controlled conditions, pelletized again and sintered in an oxygen atmosphere at 900 to 1000° C. for up to 72 hours. The polycrystalline Y3Ba5Cu8Oy thus produced is in the form of elongated crystals having an average length of 2 to 10 ?m and an average width of 1 to 2 ?m, and embedded with spherical nanoparticles of yttrium deficient Y3Ba5Cu8Oy having an average diameter of 5 to 20 nm. The spherical nanoparticles are present as agglomerates having flower-like morphology with an average particles size of 30 to 60 nm. The ball milled polycrystalline Y3Ba5Cu8Oy prepared under controlled conditions shows significant enhancement of superconducting and flux pinning properties.

Abstract: It relates to zirconia particles containing molybdenum and each having a polyhedron shape. The molybdenum is preferably unevenly distributed in surface layers of the zirconia particles. It also relates to a method for producing the zirconia particles. The method includes mixing a zirconium compound and a molybdenum compound to form a mixture and firing the mixture.

Abstract: The present invention relates to a method for precipitation hardening of a piezoceramic and to a piezoceramic.

Abstract: A method for manufacturing a ceramic sintered body substrate includes of disposing a first metal paste on a surface of a ceramic substrate, and of firing the ceramic substrate on which the first metal paste is disposed. In the disposing the first metal paste, the first metal paste contains a plurality of first metal powders, a plurality of active metal powders, and a plurality of inorganic fillers excluding metals, and in the firing the ceramic substrate, a firing temperature is equal to or higher than a melting point of the first metal powders.

Abstract: Provided are a method and system for preparing a two-dimensional material by means of a gas-phase method. The method comprises a gas-phase etching step: reacting gas having an etching effect with an MAX phase material at a first predetermined temperature, and etching a component A in the MAX phase material to obtain a two-dimensional material containing MX. The method avoids requiring the steps such as repeated cleaning, ultrasonic and centrifugal separation, and drying in preparing MXene in a liquid-phase method, greatly simplifies a preparation process, reduces the preparation cost, can achieve industrial macro preparation of MXene, and lays a foundation for application of MXene in different fields.

Abstract: The present invention is a liquid fertilizer comprising a calcium cyanamide component that is dissolved, co-applied, dispersed, or suspended in a solution of aqueous triazone urea. The combination of calcium cyanamide and triazone urea produces a slow release of nitrogen that requires fewer reapplications and is more effective than heretofore fertilizers. In one preferred embodiment, the fertilizer or plant treatment is further combined with a soil treatment including polycarboxylate acids and polyaliphatic acid salts in combination with potash to further enhance the properties of the fertilizer.

Abstract: A method of fertilizing and/or irrigating a field with water containing potassium bisulfate is disclosed. The method includes adding a predetermined amount of potassium bisulfate to irrigation water for the field, and delivering the mixture of potassium bisulfate and irrigation water to the field. Alternatively, the method may provide potassium bisulfate to crops by applying or spreading the potassium bisulfate onto ground near or proximate to the crops, and allowing water to carry the potassium bisulfate into the ground.

Abstract: Disclosed herein is process for preparing a solid fertilizer composition and a liquid fertilizer composition. The process may comprise providing a mixture comprising (i) almond fruit, (ii) water and (iii) a nitrogen-containing compound; agitating the mixture; and separating solids in the mixture from liquid.

Abstract: The object of the invention relates to a composting drum (1) used with drum composters, a shell (3) of which composting drum (1) has perforations (4), the composting drum (1) has an opening (7) suitable for inserting material to be composted, where the shell (3) of the composting drum (1) is provided with perforations (4) suitable for the removal of the compost particles and the perforated shell (3) of the composting drum (1) is covered in a removable way with a semipermeable membrane (6) at least over the part with perforations (4). The object of the invention also relates to drum composters containing such a composting drum (1), to a composting method performed with such a composting drum (1), and to a semipermeable membrane (6) for use with such a composting drum (1).

Abstract: The present invention discloses an intelligent device for composting organic waste by using larvae of saprophagous insects, comprising an outer casing which delimits an inner compartment suitable for accommodating an inner container coaxially placed inside the outer casing and suitable for accommodating organic waste and larvae of saprophagous insects; said inner container is provided with a plurality of through holes on its upper portion for allowing the migrating larvae to pass from the inner container to a migration pipe, and a lower collection compartment placed between the outer casing and the bottom of the inner container, suitable for collecting the percolate and the migrating larvae. The device according to the present invention is also provided with optoelectronic sensor means suitable for detecting the passage of at least one migrating larva from the inner container, through the pipe, up to the lower collection compartment, and a control unit provided with software means.