Abstract: A ground flare system that can enhance the removal rate of dust and other such impurities contained in exhaust gas to be processed. The ground flare system that performs an incineration process on processing target gas and emits the processed gas to the atmosphere includes: a ground flare that combusts the processing target gas; a knock-out drum that is placed upstream of the ground flare and reduces a flow velocity of the processing target gas introduced thereto; a seal drum for backfire prevention placed upstream of the ground flare; a gas introducing pipe that introduces the processing target gas into the knock-out drum and/or the seal drum; and a water film forming unit that is provided inside of the gas introducing pipe and forms a water film of spray water in a direction that intersects with a flow direction of the processing target gas.

Abstract: A method of manufacturing a selected spacing folded, pleated media by preparing a pre-pleated sheet of filter media having pleats with peaks and troughs throughout its length applying an at least one adhesive element along the pre-pleated sheet of filter media; advancing and cutting the pre-pleated sheet of material; compressing the cut length of pre-pleated sheet of filter material, resulting in folding of the pleats and adherence of the pleats into a folded, pleated filter media stack that is selectively separable; selectively separating the media stack and selecting a pleat spacing for a selected pleat spacing section application of an at least one spacing support element at the peaks of each pleat and refolding and recompressing into a selected spacing folded, pleated media stack wherein the media stack is adhered and can be selectively removed to extend from a compacted state to a deployed state with the selected pleat spacing.

Abstract: The invention relates to a device and method for treating a hot gas flow containing slag and to an entrained-bed gasifier system that comprises the device. The device comprises, in a housing, an inlet arranged at the top for the hot gas flow, an immersion pipe, which is arranged vertically and concentrically in the housing and into which the inlet opens, a coolant bath, into which a lower section of the immersion pipe is immersed, and at least one raw gas outlet opening for cooled raw gas that has been freed of slag. The lower section of the immersion pipe is designed as a radially expanded gas distributor bell in the coolant bath. Said gas distributor bell is formed by a substantially conical jacket surface having a cross-section that expands downward, wherein the jacket surface has a plurality of gas passage openings, which are distributed over the circumference of the gas distributor bell. The dimensions of the gas passage openings increase with the immersion depth in the coolant bath.

Abstract: A versatile compact air precleaner, air cleaning method and disposable air filter cartridge for air precleaner for separating heavier-than-air particulate debris from debris laden air to provide a clean airflow, wherein a flow path for air passing through a separator chamber of the air precleaner is retroflexed en route to the outlet. A plurality of independently rotatably adjustable housing sections of a housing provide utility with multiple clean air outlet configurations, freedom of direction of ejection of particulate debris from the ejector ports, different inlet configurations, mounting of the precleaner from different sides, accommodation of different sizes of filters, and different clean airflow rate capabilities. A separator chamber end section including the ejector ports is connected to the filter as a removable, disposable air filter cartridge to obviate ejector port clogging with change of filters.

Abstract: A scrubber for removing contaminants from a gas stream, comprising a tank, a submerged head extending horizontally, wherein the submerged head comprises a plate having slots extending throughout, four solid joined vertical walls inset from the walls of the tank below the plate to form an open ended box under the plate, and openings along each edge of the plate between the walls of the tank and the vertical walls of the submerged head; a first baffle above the submerged head and means for spraying scrubbing fluid. The scrubber may comprise a flooded head extending horizontally above the first baffle and head having narrow slots extending throughout; and a second baffle extending horizontally between the four walls of the tank.

Abstract: A wet type dust collector for air purifying according to an embodiment of the present invention can efficiently cool polluted air and remove sludge because it is designed to be able to continuously cool polluted air from the outside with cooling water, which is cooled and circulated, and to remove sludge and foreign substances.

Abstract: A wet scrubber (1) and a method of using the wet scrubber to clean a process gas containing sulphur dioxide comprising at least one spray level system (20) with atomizing nozzles (38) to which an absorption liquid is supplied for atomization by the nozzles (38). The method comprises operating the spray level system (20) in at least a first operating mode with an active nozzle density of at least 0.7 nozzles/m2, an absorption liquid flow of at least 10 m3/hour per nozzle and a Total Flow of at least 30 m3/hour/m2.

Abstract: The invention relates to a scrubber unit arrangement for cleaning exhaust gas. The arrangement comprises a scrubber unit for receiving a flow of exhaust gas, a pump means for supplying a scrubbing medium to the scrubber unit from a source of scrubbing medium, and means for discharging scrubbing medium from the scrubber unit. In order to provide an energy efficient scrubbing process, the scrubber unit arrangement further comprises a turbine unit, which is arranged to receive discharged scrubbing medium from the scrubber unit. Scrubbed exhaust gas is separately discharged from the scrubber unit.

Abstract: A filtration system for filtering gas may comprise a liquid pump, wherein the liquid pump may be configured to pump liquid. The system may also include a spray nozzle, wherein the spray nozzle may be in fluid communication with the liquid pump. The spray nozzle may be configured to spray liquid on a gas stream; wherein the spray nozzle may be configured to spray horizontally. The system further includes a liquid collection basin, disposed near the spray nozzle, wherein the liquid collection basin may be configured to collect liquid after spraying on a gas stream. The system may additionally include a plurality of condensation drips disposed along a top of the liquid filter configured to condense any liquid which may evaporate during filtration and returns the condensed liquid to the chambers for filtration. The system may be a closed system, enabling liquid to be recycled throughout the system.

Abstract: An environmentally-friendly exhaust device comprises an outer tank. An inner pipe is disposed inside the outer tank. An air propeller is disposed below the inner pipe inside the outer tank. An upper guiding plate and a lower guiding plate are disposed on a surface of the inner pipe for connecting with the outer tank. Thereby, air, oil mist and water are entered between the outer tank and the inner pipe; and are guided to the air propeller below through the upper and the lower guiding plates; and then are exhausted through the inner pipe upwardly. The purification of oil mist is processed integrally for enhancing the efficiency of exhaust and achieving the environmentally-friendly effects. Multiple layers of filter screens provided for carrying out multiple filtering are economically effective and can further enhance the environmentally-friendly effects.

Abstract: The present invention provides a method and apparatus for the treatment of process gas from an anaerobic digestion system or a landfill gas system. In one embodiment, the system comprises a caustic scrubber including a vertical column having a top and a bottom and including a counter current flow system, wherein a process gas stream flows up vertically through the column in counter current flow to a caustic liquid solution that flows downward through the column. The caustic liquid solution removes at least one acid from the process gas stream, wherein treated gas that is substantially free of acids bubbles out through an opening at the top of the vertical column.

Abstract: A wet scrubber (1) and a method of using the wet scrubber to clean a process gas containing sulphur dioxide comprising at least one spray level system (20) with atomizing nozzles (38) to which an absorption liquid is supplied for atomization by the nozzles (38). The method comprises operating the spray level system (20) in at least a first operating mode with an active nozzle density of at least 0.7 nozzles/m2, an absorption liquid flow of at least 10 m3/hour per nozzle and a Total Flow of at least 30 m3/hour/m2.

Abstract: A method of scrubbing flue gas includes introducing flue gas comprising an acidic gas through an inlet into a tower; spraying an acid-absorptive fluid into the tower such that the acid-absorptive fluid contacts the flue gas; accumulating the acid-absorptive fluid in a recycle tank portion of the tower; and introducing an oxygen-containing gas into the acid-absorptive fluid in the recycle tank portion of the tower, wherein the oxygen-containing gas is introduced through at least one opening of an aerator, each of the at least one openings are positioned to release the oxygen-containing gas at least at a distance greater than or equal to a predetermined radial distance from the flue gas inlet, the predetermined radial distance being equal to at least 10% of a diameter of the recycle tank portion of the tower.

Abstract: A filter assembly includes a filter pad comprising fibers including natural, synthetic and/or hybrid fibers. A stabilizer frame formed of a non-metallic material may be imbedded in the filter pad. The stabilizer frame may be configured to provide support to the filter pad to maintain the filter pad in a generally flat configuration. In accordance with a particular embodiment, the filter pad may be comprised of at least first and second fibrous mats that are coupled together. In this embodiment, the stabilizer frame may be disposed between and coupled with the first and second fibrous mats.

Abstract: The portable air scrubber device provides for removably covering an existing chimney with the chimney cap. The axial fan forces airflow through the device hoses, removable filters, flex joints, and tank. The hose flex joints allow adaptation to various chimneys and roofs. The device may be disassembled into its various components such as the hoses, the fan housing, the chimney cap, the flex joints, and the tank components, thereby aiding portability. Liquid filtration media used for filtration may include water, water and glycol mix, and other additives that aid in air filtration and particulate removal. Air once passed through the filters and sprayed by the liquid filtration media may exit the top section holes. Excessive liquid filtration media may also exit the top section holes.

Abstract: The present invention provides a method and apparatus for the treat en of process gas from an anaerobic digestion system or a landfill gas system. In one embodiment, the system comprises a caustic scrubber including a vertical column having a top and a bottom and including a counter current flow system, wherein a process gas stream flows up vertically through the column in counter current flow to a caustic liquid solution that flows downward through the column. The caustic liquid solution removes at least one acid from the process gas stream, wherein treated gas that is substantially free of acids bubbles out through an opening at the top of the vertical column.

Abstract: An apparatus 100 for scrubbing flue gas 122, the apparatus 100 including a tower 140 having an inlet 120 receiving a flow of flue gas 122 and a recycle tank portion 142; a fluid 162 disposed in the recycle tank portion 142; and an aerator 150 having at least one opening 152 for introduction of an oxygen-containing gas 154 into the fluid 162, wherein the at least one opening 152 is positioned to release the oxygen-containing gas 154 at least at a distance greater than or equal to a predetermined radial distance F from the inlet 120, the predetermined radial distance F being equal to at least 10% of a diameter of the recycle tank portion 142.

Abstract: A system for purification of air in an inner space has a housing having air inlet unit and air outlet units; air filtering means located in the housing between the air inlet unit and the air outlet units; and vertical attachment attached to the air outlet units and extending vertically upwardly so that air enters the housing at a lower level through the air inlet units and leaves the system at an outlet of the attachment at a level substantially higher than the level of the inlet units and air conditioner located in said housing, a humidifier located in the vertical attachment, a water container for supplying water to said humidifier. The air conditioner is connected with the water container so that a spray of water from the air conditioner flows into the container.

Abstract: A grease water separation apparatus includes an air chamber in communication with an indoor grill; a water scattering member comprising a space in communication with the air chamber, at least one sprinkling duct, and a pump in communication with the sprinkling duct; a heat exchanger connected to the water scattering member and comprising a grease filter and grease holes; a liquid collector connected to the heat exchanger and comprising a water reservoir in communication with the pump, a grease reservoir for collecting grease from the grease holes, and a grease water mixing reservoir; a water-grease separator connected to the heat exchanger and being in communication therewith, the water-grease separator comprising a hollow cylinder having an air outlet and an inlet within the water-grease separator, and a water-grease outlet for flowing water and grease to the grease water mixing reservoir; a centrifugal fan; and an air filter.

Abstract: An exhaust gas cleaning apparatus according to the present invention includes a wall member configured to form a gas passage for allowing an exhaust gas to pass therethrough, and a mist nozzle and a water film nozzle disposed in the gas passage. The mist nozzle forms mist in the gas passage, and the water film nozzle forms water film in the gas passage. The mist nozzle is disposed further toward the upstream side in a flowing direction of the exhaust gas than the water film nozzle. Plural sets of the mist nozzle and the water film nozzle may be provided.

Abstract: A method and device for cooling hot crude gas and slag from entrained flow gasification of liquid and solid combustibles at crude gas temperatures ranging from 1,200 to 1,800° C. and at pressures of up to 80 bar in a cooling chamber disposed downstream of the gasification reactor by injecting water. The cooling water is distributed, with a first portion being finely dispersed into to cooling chamber and a second portion being fed at the bottom into an annular gap provided between the pressure-carrying tank wall and an incorporated metal apron for protecting said pressure-carrying tank wall. The second portion of the cooling water flows upward in the annular gap and trickles down the inner side of the metal apron in the form of a water film.

Abstract: An absorbing tower is provided in its side wall with a gas entrance for introducing a combustion exhaust gas into the absorbing tower, and an absorbing liquid is sprayed from the nozzles of a spray header into the exhaust gas introduced to rise from the gas entrance. A trough is arranged in the side wall of the absorbing tower and above the gas entrance, and a nose having a horseshoe shape in a top plan view and extending into tower is disposed in the tower side wall portion of the gas entrance other than the portion arranging the trough and at the same or at substantially the same height as the portion of the trough. The absorbing liquid, which is sprayed from the nozzle and drops along the absorbing tower wall portion, is rescattered to the center portion of the absorbing tower excepting the entrance of the absorbing tower, so that the gas-liquid contact efficiency is improved while suppressing an increase in pressure loss, thereby to prevent the drift of the gas at the tower wall portion.

Abstract: A filter includes a spacing member and a filter element having two layers laminated together with the spacing member such that the spacing member extends between the filter element layers. The spacing member spaces apart the filter element layers to define an opening between the filter element layers.

Abstract: An inlet air chilling and filtration system for a turbine. The inlet air chilling and filtration system may include a first stage spray array with a first number of spray nozzle pairs, a second stage spray array with a second number of spray nozzles pairs, and a drift eliminator.

Abstract: Absorption liquid recirculating pipes fitted with absorption tower (absorber) recirculating pumps corresponding to individual spray headers are inserted from the void tower portion inside absorption tower, near the liquid surface of liquid trapping portion (recirculation tank), in the interior of the absorption tower, erected vertically from substantially the center of the absorption tower and connected to respective spray headers provided in multiple stages along the direction of gas flow. Multiple nozzles of each of the spray headers are disposed mutually concentrically or rectangularly on a plane orthogonal to the direction of flue gas flow within the absorption tower.

Abstract: Aspects include a valve comprising a flowing liquid, operable to control a flow of gas through a port. Certain aspects include reaction chambers operable to react gases, and in some aspects gases are substantially contained within an envelope comprised of a flowing liquid. Certain embodiments control gas entrance into a chamber with a valve comprised of a flowing liquid controlling gas flow through a port. Various gas scrubbing systems are described, including systems comprising reaction chambers operable to react gases that yield substantial amounts of solid reaction products. Methods for controlling gas flow are disclosed. Systems and methods include sequential steps of wet-scrubbing, reacting and further wet-scrubbing a gas stream.

Abstract: An exhaust gas cleaning apparatus according to the present invention includes a wall member configured to form a gas passage for allowing an exhaust gas to pass therethrough, and a mist nozzle and a water film nozzle disposed in the gas passage. The mist nozzle forms mist in the gas passage and the water film nozzle forms water film in the gas passage. The mist nozzle is disposed further upstream side in a flowing direction of the exhaust gas than the water film nozzle. Plural sets of the mist nozzle and the water film nozzle may be provided.

Abstract: A method of separating a liquid atomizes a mixed liquid containing a plurality of components into an atomized fine particle by an ultrasonic vibration to obtain a mixed fluid of the atomized fine particle and air, separates the air from the mixed fluid and collects an atomized component, and separates the atomized component into liquids having different component contents. The method of separating a liquid atomizes the liquid while supplying a carrier gas heated with the thermal energy of the outside air to the surface of the liquid to be atomized or supplies the outside air to the surface of the liquid to be atomized, thereby atomizing the liquid while supplying the thermal energy of the outside air to the surface of the liquid.

Abstract: In an absorbing tower including an absorption unit of relatively small diameter capable of absorption and removal by an absorbent slurry for exhaust gas purification and a tank unit of relatively large diameter for temporarily storing the absorbent slurry flowing down from the absorption unit, the tank unit and the absorption unit are joined together by a conical member. By disposing an entrance flue at the conical member, a distance from an upper portion of the conical member to a spray header is shortened, and a height of the absorbing tower can be reduced accordingly. By extending a front end of the entrance flue to the absorption unit into which droplets of the absorbent slurry fall, a high-temperature exhaust gas from a boiler, etc., that has passed through the entrance flue, is made to pass through a circumference of the conical member so that an inexpensive material can be used in the conical member.

Abstract: The present invention discloses a system for flue gas treatment, wherein the provided system comprises a quench module, a first control module, a filter collecting module, a wet scribing module and a regeneration module. In this system, parts of the particles contained in flue gas are removed in the quench module and the wet scribing module by a first scrubbing solution, and then in wet scribing module a second scrubbing liquid containing particles is formed. Next, the second scrubbing solution is treated in the regeneration module to form a third scrubbing solution, wherein the third scrubbing solution is then fed back to the quench module and/or the wet scrubbing module to substitute the first scrubbing solution for repeating what originally performed via the first scrubbing solution. Furthermore, this invention discloses a method for flue gas treatment.

Abstract: An ultrasonic solution separator including an ultrasonic atomization chamber supplied with a solution containing a target material; an ultrasonic oscillator producing mist from the solution in the ultrasonic atomization chamber with ultrasonic oscillation; a power supply for ultrasonics connected to the ultrasonic oscillator, and a collection portion transporting the mist produced by the ultrasonic oscillator with a carrier gas and aggregating and collecting the mist included in the carrier gas. The power supply supplying high-frequency power to the ultrasonic oscillator so that the ultrasonic oscillator oscillates at an ultrasonic frequency. The ultrasonic separator aggregates and collects the mist produced in the ultrasonic atomization chamber by means of the collection portion. With this ultrasonic solution separator, the temperature of carrier gas in the ultrasonic atomization chamber is at least 5° C. higher than the carrier gas in the collection portion.

Abstract: A scrubber for removing particles from waste gas. The scrubber comprises a chamber and a water-injecting device. The chamber has an outlet, an inlet connected to a gas inlet pipe, and a plurality of sprayers connected to a water source to spray water into the chamber. The water-injecting device is disposed at the outlet and connected to the water inlet pipe. The water-injecting device has an annular gap to inject water and provide a water film over the outlet of the chamber, filtering out particles and corrosive gases.

Abstract: The present invention relates to a gas process system for treating a solids-containing and/or solids-forming gas stream, wherein said gas process system comprises a device for forming a liquid film between the gas stream to be treated and an interior wall of such gas processing system, and wherein such liquid film is spaced apart from the interior wall by a distance that is sufficient to prevent solids from passing through such liquid film to form deposition on the interior wall.

Abstract: This invention relates to a cascade-type scrubber, with which the wet scrubbing of the exhaust gas and removal of droplets from the gas can be performed in one and the same scrubber, producing a pure, dropless gas. It is thus essential that the cascade tubing typical of the cascade scrubber and the equipment for droplet removal are combined into a single compact entity, which is formed of several nested chambers.

Abstract: A gas treatment device comprises an oxygen-mixed unit, a treatment unit, a working fluid and a sprayer. The sprayer has an inner wall and a plurality of nozzles circumferentially arranged on the inner wall. The nozzles are used for outputting the working fluid to form a filtering region so that the particles can be easily and efficiently removed.

Abstract: An exhaust cleaning device for removing a portion of carbon containing molecules from exhaust. The exhaust cleaning device includes a tubular member which is elongate and has a first end and a second end. The first and second ends are placed in communication with an exhaust system. The tubular member has a middle section and two legs. A cleaning assembly for cleaning the exhaust includes a plurality of apertures extending through the middle section of the tubular member. A housing is attached to an outer surface of the bottom half of the middle section and covers the apertures such that the apertures extend into the housing. A container is extendable into the housing. A filter member is removably positioned in the container. A water pump sprays water into the tubular member such that the water binds to carbon containing molecules in the exhaust and deposits the molecules in the filter.

Abstract: An air cleaning apparatus draws air through a convoluted air channel defined by a plurality of non-permeable baffles. The baffles are arranged so that the air stream must change direction several times before exiting the apparatus. A fluid curtain is disposed along at least a part of the convoluted channel to remove particulate material from the air stream. One preferred embodiments causes fluid to flow over the baffles to provide a plurality of fluid curtains arranged along the air channel.

Abstract: A method and system for retrofitting an integrated scrubber to provide maximum oxygen content in a controlled decomposition oxidation (CDO) abatement process. The system includes a thermal/wet integrated scrubber, and a compressed air supply for supplying air to an oxygen separation device that separates the air into a nitrogen-enriched component and an oxygen-enriched component. The oxygen separation device utilizes a ceramic oxide or polymeric material to separate from the supplied air an oxygen-enriched component for introduction into the integrated scrubber. The integrated scrubber is equipped with a mechanical scraping device for continuous or intermittent removal of combustion deposits formed during the controlled decomposition oxidation process.

Abstract: An air cleaner for removing air pollutants by a water spray type of dust collecting system, which includes a dust collecting part and an air and water separating part in the interior of an air duct, the dust collecting part composed of primary and secondary dust collectors by water spraying, each of which having a plurality of spraying nozzles layeredly arranged by predetermined intervals to be opposed at an angle of 30° from the top to bottom thereof, and a space dust collector by water spraying disposed in a space between the primary and secondary dust collectors by water spraying, such that the three-step air and water contact causes foreign materials such as dust, gases and so on to be absorbed, dissolved and settled, and the air and water separating part formed of a groove-engaged type and layeredly curved by six-step folding at an angle of 90° in consideration of air resistance, for passing only the air flowing from the dust collecting part and collecting water drops.

Abstract: In the method and system of the instant invention, volatile organic compounds (VOCs) liberated in the course of solvent-based painting of a workpiece, are recovered. The atmosphere within a closed spray-booth is maintained at a fixed humidity such that vaporized water, supplied in the form of steam or nebulized water vapor, acts as a carrier for VOCs liberated in the course of spray painting or heat curing of a workpiece. The VOCs may be recovered continuously, including during the spray-painting or heat curing of the workpiece. The VOC laden, humidified air is circulated through a condenser such that VOCs dissolved in the water vapor condense and are directed to a recovery means. The water and solvent are separated, recovered and purified for re-use or placed in an appropriate container for disposal, thereby eliminating the usual practice of expelling VOC laden air into the atmosphere.

Abstract: A method for the abatement of one or more pyrophoric gases in a gas stream, which comprises introducing water in to the gas stream and/or mixing the gas stream with preheated air and introducing the gas stream in to a container in which the pyrophoric gases are abated.

Abstract: The invention relates to an apparatus for scrubbing with water a continuous flow of charged gas, the apparatus including a scrubbing chamber; an inlet via which the scrubbing water is fed into the scrubbing chamber; a scrubbing throat for mixing the scrubbing water with the charged gas in the scrubbing chamber; a removal device for removing the scrubbing water and the collected particles; and a removal device for removing the continuous flow of at least partially scrubbed gas.

Abstract: A wet gas stripper is provided for separating particulate matter entrained in a moving gas stream. The gas stripper includes a housing having a plurality of walls, and a gas inlet for receiving the moving gas stream into the housing and a gas outlet through which the moving gas stream is exhausted from the housing. A particulate collection area is formed at a base of the housing. A liquid spray element sprays a liquid against at least one of the walls of the housing above the particulate collection area to create a particulate-entraining mist. The mist defines a filtration medium for capturing the particulate matter entrained in the gas stream and carrying the particulate matter to the collection area for removal from the housing.

Abstract: A scrubber more effectively mixes air or gas with water or a liquid cleaning agent to entrain and thereby clean contaminants from an airflow. An improved baffle-defining structure forces a more complete interaction between the air and water and buffets the mixture into an air/water mixing zone while preventing the water from collecting on an inner surface of the water scrubber and draining down out of the airflow path. A cyclonic, centrifugal dewatering apparatus removes the mist and residual contaminants after the water scrubbing removes most of the contaminants from the air.

Abstract: An exhaust gas treatment apparatus for treating exhaust gases generated in semiconductor manufacturing processes. It includes a main pipe, a U pipe, a discharge pipe and a tank. The main pipe has an inlet to receive exhaust gases, a heater surrounding the main pipe to heat the exhaust gases to form exhaust gas powder, a sprinkler to spray cooling water to cool the heated exhaust gases to form vapor and waste water and an outlet to discharge vapor and waste water into the U pipe. The U pipe has a first connector connecting with the main pipe and a second connector connecting with the discharging pipe. The tank is located below the U pipe under the first connector for receiving lump type exhaust gas powder scrapping from the inside wall of the main pipe. The U pipe will not be blocked by the lump type exhaust gas powder so that exhaust gas treatment efficiency won't be harmfully affected.

Abstract: The exhaust gas enters via an exhaust gas line into a washing apparatus. In the washing apparatus solid matter particles are predominantly separated. The pre-washed exhaust gas flows from the washing apparatus through a droplet removing conduit to a trickling filter device in order to be subjected to an activated sludge treatment for the separating of gaseous contaminants. In order to reduce the point of condensation and accordingly the absolute humidity of the exhaust gas for the activated sludge treatment either fresh air is added through a feed line to the pre-washed exhaust gas or the washing water which is led in a closed circuit through the washing water line of the washing apparatus is cooled in a heat exchanger in a cooling tower. A portion of the washing water of the washing apparatus is led through a first solid matter removing apparatus of which a portion of the filtrate is led to an activated sludge basin located under the trickling filter device.

Abstract: An exhaust gas treatment apparatus for treating exhaust gas generated in semiconductor manufacturing processes. It includes a main pipe, a gas vortex means, a water vortex means, an U pipe and a discharge pipe. The main pipe transforms the exhaust gases to waste powder which are discharged out through the U pipe and the discharge pipe. The gas vortex means and water vortex means are located below the main pipe for generating annular and even downward gas flow and water flow at the outlet of the main pipe for preventing reflux of waste powder from entering into the main pipe. Waste powder thus won't deposit around the outlet. Scraper in the main pipe won't be stuck or deformed. Waste powder may be discharged out through the U pipe and discharge pipe smoothly and efficiently.

Abstract: An improved process and system for collecting and handling dust in a papermaking machine environment wherein dust-laden air is drawn into and moves along an elongated collector by way of a vacuum-generating source connected to the collector involves the introduction of water into the collector so that the introduced water becomes entrained by the dust-laden air moving through the collector and wet-scrubs the dust-laden air upon entering the collector. With the dust being wet-scrubbed upon exiting the collector, the likelihood of ductwork fouling is substantially eliminated, and the risk of fire in the ductwork downstream of the collector is appreciably reduced.

Abstract: A dust suppression system for suppressing dust associated with a movement of dust producing material along an open conduit may include a hood assembly positioned adjacent the open conduit so that the hood assembly defines an interior chamber that is exposed to the dust producing material contained within the open conduit. A baffle member mounted to the hood assembly divides the interior chamber into an inlet chamber and an outlet chamber. A venturi assembly having an inlet end and an outlet end is mounted to the baffle member so that the inlet end of the venturi assembly is exposed to the inlet chamber and so that the outlet end of the venturi assembly is exposed to the outlet chamber. A pressurized fluid provided to the venturi assembly causes the venturi assembly to pull dust laden air contained within the inlet chamber to the outlet chamber, the fluid combining with a portion of the dust suspended in the dust laden air to suppress a release of dust into a surrounding atmosphere.

Abstract: Apparatus for removing odor from the air exhaust of animal confinement buildings is described. One embodiment of the apparatus includes a plenum housing attached to an existing exhaust fan on an animal confinement building. The plenum housing has an entrance and an exit, and houses a baffle having a roughened surface. Water is delivered to the baffle surface by spray headers which are configured to spray water from a top edge of the baffle. A water curtain is generated by spray nozzles at the plenum housing exit. A trough is configured to collect a water effluent from a bottom edge of the baffle. In use and according to the methods described, an air stream consisting of exhaust air from an animal confinement building is directed toward the water-flooded baffle surface. Odor particles in the air stream impinge on the baffle surface and are adsorbed by the water. The air stream continues to flow past the baffle surface and through the water screen at the plenum housing exit.