Submerged screen

An assembly for diffusing gas in a humidifier comprises a base plate having a wall extending around its periphery, a diffuser sheet comprising a substantially gas impermeable membrane having a plurality of perforations and a member for directing gas to be humidified into a gas receiving chamber defined...     

An aeration system for a sewage treatment plant, including headers having diffuser connectors longitudinally spaced along the header, the connectors having nipples formed thereon which are welded to nipples formed on the header.

There is provided a simple gas diffusing apparatus composed of a top member having gas permeable perforations, a bottom member including a plurality of larger openings for removal of solid and semi-solid accretions, a gas inlet nipple for introduction of a gas, e.g. air, into the cavity formed by the...     

The easily serviced aeration apparatus of the invention includes a central base structure comprising a source of air under pressure, a plurality of lateral passages extending radially outward from the source, a diffuser hanger at the outward end of each lateral passage, and a dependant assembly suspended...     

An improved gas washing device wherein gases to be cleaned are passed into the device through the gas inlet. A tubular connection between the gas inlet and a bell chambers which is provided with a top slotted plate. Wire mesh disposed over the bell chamber. An aqueous detergent solution in the device...     

A device for sparging carbon dioxide from an acidified aqueous stream for use in a system for quantitatively determining the organic carbon content of the stream has a body with vertically extending cavities formed therethrough and passageways which connect the cavities in series so that the aqueous...     

A bubble generating aerator comprising a disc-like or tubular aerating element made of a sintered open-pore plastics material, the element being submerged in a surrounding liquid and connected to a pressure gas source for supplying gas into the element and discharging the gas from one surface of said...     

A sparger useful for producing bubbles of uniform size in liquids is formed from a body comprised of a cured, thermosetting resin matrix enclosing spherical particles of substantially uniform size and containing numerous interconnecting passageways formed by the interstices between said enclosed particles.

A fish husbandry system which provides for high density raising of fish under controlled conditions. The fish are confined in a plurality of upright, water-filled tanks through which water is conducted in serial flow by conduits. Air or oxygen is introduced into the water in the bottom region of each...     

A respiratory humidifier has a base with a thermally controlled heater therein effective to heat a first transfer surface on the top of the base. Removably pressed against the first transfer surface is a second transfer surface forming the bottom of a container into which liquid is admitted, close to...     

The invention pertains to an apparatus for purifying polluted water, which comprises the combination of a screen to be immerged into the water, means for generating a water jet under said screen with respect to the water level, and means for injecting atmospheric air in said water jet.

Enriching apparatus for low quality gas, such as methane as found trapped in mines, low B.T.U. gas, and/or air or combinations of either. Such gas and/or air is passed through naphthalene pellets and gasoline or other petrochemical products which then absorb properties of enriching materials and emit...     

A vaporizing carburetor which introduces gasoline vapors into atmospheric air without any heating by directing a stream of air through liquid fuel to cause vaporization and a depression, as a consequence of evaporation, in the temperatures of both the fuel and the resulting mixture, to produce a chemically...     

A supporting arrangement for supporting a porous diffuser over a discharge opening of a gas supply pipe comprises a diffuser supporting body which defines a chamber with the porous diffuser and which connects with the discharge opening whereby gas is supplied to the chamber from the pipe. The diffuser...     

An aeration system for a sewage treatment tank including headers having connectors longitudinally spaced along the header, the connectors being adapted to receive air diffusers; means supporting the header horizontally in a tank; and means for rotating the header on its axis to level the connectors.

A disposable, inhalation-therapy, container in which a chamber for liquid is defined between the sides, top and bottom of the container by transverse upper and lower, flexible, multi-slitted partitions, spaced from the top and bottom of the container. The partitions are porous when flexed by inhalation...     

Apparatus for agitating and aerating sewage and industrial waste comprising a plurality of flexible, inflatable cells disposed in the bottom of a liquid waste holder and means for supplying and withdrawing air to and from the cells so as to cause them to periodically inflate and deflate, whereby the...     

Inhalation therapy devices for vaporizing or nebulizing a liquid into a gas stream including containers having a fluid diffusion chamber disposed at the bottom portion thereof and adapted to receive an element for heating fluids within the diffusion chamber.

An air-permeable diffuser disc (diffuser element) for use in an air diffuser head for aerating liquids, particularly sewage, characterized by the outer periphery of said permeable disc having a higher density than the balance of said disc, rendering same substantially impermeable, thereby preventing...     

A radial configuration of flexible diffuser tubes eliminates short-circuiting by automatically producing a flow pattern extending well beyond the radial extent of the diffuser. A slitted diaphragm at the outer end of a diffuser tube facilitates the removal of water during start-up. A preferred diffuser...     

A method of making a number of foundry cores serially in which a foundry aggregate mixed with a curable binder is introduced into a core box cavity to form each green core which is gassed by passing into it a predetermined dose of a saturated vapor under pressure of a normally liquid curing agent for...     

A humidifier-nebulizer apparatus is disclosed which includes a liquid reservoir having a sterile liquid such as water contained therein, the liquid reservoir having a sealed wall portion adapted to be pierced by the piercing element of an adapter head when mounted on the liquid reservoir. The adapter...     

A blood oxygenator wherein blood and oxygen are admixed by flowing blood, into which has been introduced bubbles of oxygen, through a three dimensional, open cellular mixing material having a substantial void volume. In one embodiment, the admixing chamber is provided by an upright cylinder having an...     

A low-cost, motor-less carbonator has a housing having a fill chamber and a carbonation chamber. The chambers are maintained at different pressure levels to create a fluid movement from the fill chamber to the carbonation chamber. The fill chamber can be vented to allow a low pressure water feed to refill...     

A humidifier-nebulizer apparatus is disclosed which includes a liquid reservoir having a sterile liquid such as water contained therein, the liquid reservoir having a sealed wall portion adapted to be pierced by the piercing element of an adapter head when mounted on the liquid reservoir. The adapter...     

A process for generating in a pressure vessel a ready supply of a vapor of a normally liquid active substance in an inert carrier gas under pressure and dispensing vapor intermittently from the supply. Once a body of the active liquid substance and overlying atmosphere of vapor is established in the...     

An environmentally compatible, industrially safe, and potentially economic means for recovering copper and/or nickel from deep-seated deposits without resorting to extensive underground development. A two-phase ammoniacal leach solution containing oxygen bubbles is forced under high pressure through...     

The present invention provides novel apparatus for aerating a body of liquid. The apparatus includes a diffuser shell in the form of a substantially tubular, elongate body of a relatively rigid, gas permeable material such as fine pore polyethylene. The diffuser is closed at one end by a first end cap...     

This invention is a filtration and aeration apparatus which comprises (a) an elongated tubular member which is closed at its lower end, open at the opposite end, and provided at its lower portion with a plurality of passages which extend through the longitudinal wall of the tubular member and (b) an...     

A compact but highly integrated pollution control system for use with a coal or lignite burning electrical power generating plant utilizes a stabilized continuously monitored and controlled bath through which is passed gaseous effluent containing particulate matter. In one form this may comprise a chimney...     

A method for treating a body of liquid with a gas, which method comprises passing a stream of the liquid through a conduit, injecting gas intermittently into the stream at high pressure so as to dissolve at least some of the gas in the liquid stream, and introducing the stream containing dissolved gas...     

An aquarium device for use in an aquarium tank, the device includes two cylindrical airstones each having a nozzle with an end portion thereof secured within a bore of the airstone and an opposing stem portion thereof extending from the airstone. A T-shaped connector includes a tubular central portion...     

An apparatus for dissolving a gas such as air into a liquid utilizing a submerged tube provided with means for injecting the gas into the lower end thereof and for inletting liquid into the tube at various locations throughout the length thereof.

An artificial lung having first and second oxygen blowing stages formed therein. The device comprises an outermost blood reservoir tube having top and bottom walls formed thereon, a plurality of oxygenation tubes disposed coaxially with the blood reservoir tube defining passages for blood therebetween,...     

An improved compact apparatus for gas-liquid contact and separation by precipitation of solids therein, which essentially comprises a splash separating section, a solid-gas-liquid contact section and a solid depositing section formed in a single reaction vessel, in which gas is blown into the vessel...     

Diffuser apparatus comprises a frame including end portions interconnected by and integrated with an elongate intermediate portion. The intermediate portion is formed to produce a longitudinally extended trough, preferably of generally hemi-cylindrical configuration. The diffuser sleeve which mounts...     

Standards solutions and test samples are necessary for blood gas analyzers. Production of such standards and test samples has only been possible with relatively expensive apparatus. Such standards and test samples are provided herein by apparatus 10 which equilibrates a liquid 12 with a gas 14. The apparatus...     

The apparatus described in this disclosure has only one principal function, that is, to mechanically separate an inert, dielectric, nonmagnetic, liquid carrying absorbed paramagnetic gases; into two phases, that which becomes saturated or supersaturated with absorbed paramagnetic gases and that which...     

Gas diffusion elements, formed of a body of solid particles which has been shaped, pressed and rendered coherent by bonding or sintering in a compacted form having pores, and having an enhanced apparent volumetric compression ratio in a central zone thereof, are disclosed. Such elements have a generally...     

A substantially cylindrical container for use in carbonating small quantities of water for household or individual use as a soft drink dispenser contains a spherical, porous stone through which carbon dioxide gas is expressed under pressure for diffuse dissemination into the contained water for carbonation,...     

A bubble generator is comprised of a bubble plate and an adjuster plate slidably coupled to each other, the former being provided with parallel small bubble holes rows and the latter with parallel small slot rows, large slot rows and large bubble hole rows. Mutual sliding between the plates allows three...     

A sewage aeration system comprising a header pipe, plenums of synthetic thermoplastic or thermoset resin with side walls inclined upwardly and outwardly to diffusion element support means, generally horizontal diffusion elements free of through-holes other than air diffusion pores, retaining means securing...     

A swing diffuser apparatus for gas diffuser systems for liquid treatment is disclosed in which an array of diffusers (50) is movable between a deeply submerged, essentially horizontal operating position, a shallowly submerged, essentially horizontal operating position, and a fully exposed, substantially...     

Standards solutions and test samples are necessary for blood gas analyzers. Production of such standards and test samples has only been possible with relatively expensive apparatus. Such standards and test samples are provided herein by apparatus 10 which equilibrates a liquid 12 with a gas 14. The apparatus...     

A removable light-weight, apparatus for the aeration of a body of water or other liquid in a tank or a pool having a submerged liquid source or inlet port supplying a continuous or a sporadic stream of liquid into said tank, said aeration apparatus comprising an air induction tube extending between and...     

Intimate and efficient contacting of plural, physically disparate phases, e.g., a gas and a liquid, is achieved by contacting the phases cocurrently in a column. The gas phase is introduced at a velocity between its phase transition inversion point (T) and multiple critical point (M.sub.c) velocities,...     

The present invention is concerned with an apparatus for removing foreign matter from the top surface of water, for use with aquaria, which comprises a discharge tube stationarily disposed in the aquarium and having its upper opening rim below the water surface, in which tube is disposed another tube...     

A water-aeration apparatus has a tubular frame defining a substantially closed chamber and capable of floating and carrying a load when the chamber is filled with air. Flood and bleed valves are provided at respective underwater water intakes and above-water air exhausts for introducing water into the...     

A humidifier for humidifying gas with a liquid has a cavity defined by top, bottom, and side walls. An interior wall is attached to the side wall and defines a first and second cavity within the enclosed cavity. At least a first opening adjacent the bottom wall and at least a second opening adjacent...     

A froth flotation apparatus for elimination of solid particle impurities contained within a liquid includes a vessel defining a flotation cell which includes an upstanding foam discharge conduit, an inlet conduit communicating with the vessel such that fluid flowing through the inlet conduit and into...     

The invention relates to a bubble bath device with varyingly large and separately operable air exit holes for large and small bubble production. The bubble bath device has at least one device body which in turn contains at least one air chamber. The air exit holes of the air chamber of chambers are provided...     

A saddle type pipe support means attachable to a base. The support is comprised of an inverted V-shaped member, a sling support located at the vertex of said inverted V-shaped member for engagement of a pipe to the support, and a clamping means for securing the pipe to the sling. The leg elements of...     

A combustion air bubble chamber having an inner surface defining an hourglass-shaped column of water and bubble holes located at the bottom of the chamber outwardly of the waist so that bubbles rising from the holes contact the converging inner wall of the lower part of the chamber, are reduced in size,...     

An arrangement for floatation of solid particles from liquids such as from sewage, particularly for settling of coal from a conditioned pulp, has a conditioning device from which a pulp flows in a predetermined direction, gasifying device having a gasifying surface extending parallel to the pulp flow...     

The invention relates to a method and apparatus for introducing a catalyst into a fuel mixture. The method includes placing water in a container; passing air through the water to ionize at least a portion of the air molecules wherein at least a major portion of the air ions have a negative charge; and...     

An aerator to expedite the breathing time of wine just before serving including a housing containing a motor driven diaphragm air pump; a recess provided in one end of the housing for receiving the neck of a bottle of wine to be aerated, and a tube extending from the pump into the wine within the bottle.

The electrogasdynamic coating system includes an electrogasdynamic gun for charging material particles indirectly. The gun has a gas inlet which receives from a gas source a pressurized gas in which an condensable vapor is entrained. Corona and attractor electrodes are disposed in communication with...     

An air bubble hydromassaging apparatus having a blower housed in a control unit, a bubble grid adapted to be placed in a bathtub, and air tubing enclosing a check valve to connect the control unit to the bubble grid. The control unit is provided with a bushing type compressed air outlet and the bubble...     

A removable batch-type diluent tank for use in connecting to a rigid gas coupling in a beverage dispenser has a tank body for containing a supply of diluent having an opening and a removable cover for covering and sealing the opening. Also included is a relief valve for relieving pressure in the tank...     

An improved gas diffuser tube assembly, particularly for diffusing bubbles of oxygen gas into liquid sewage during treatment thereof, is provided. The assembly is characterized by a construction which creates substantially the smallest bubbles that would be operationally practical and which satisfactorily...     

A gas injection apparatus for injecting a quench gas. The gas injection apparatus provides a means for injecting a quench gas into a hot gas contained in a vessel having an inner liner. The apparatus is designed such that the independent thermal expansions and contractions of the inner liner do not create...     

Improvements in flotation separating systems of the type employing small rising air bubbles to induce ascension of certain types of particles in a flotation compartment while other particle types descend toward the bottom of the compartment include a bubble passing, particle blocking barrier forming...     

The present invention relates to humidifiers as used in research and in the calibration of humidity measuring instruments for producing a saturated gas stream. Specifically the invention relates to humidifiers comprising a bubble type and an extended surface type humidifier in gas flow communication...     

An aeration/mixing apparatus for a water body has a centrally located circular manifold and a plurality of evenly spaced, peripherally located air output connectors is positioned over a base plate. The manifold is supported a fixed distance above the plate and a plurality of microporous diffuser tubes...     

A whirlpool bath massaging apparatus having a bubble mat, a distributor having a control switch for regulating the air supply, and control means including a blower which is in communication with the bubble mat through an aerator tube and the distributor. The distributor is in the form of a self-contained...     

An apparatus for rapidly carbonating beverages in less than seven minutes is disclosed, including a container for the beverage to be carbonated and a source of carbon dioxide to be introduced into the beverage through a conduit member. The container is sealed, and a bleed line is coupled for the headspace...     

A diffused bubble aeration system for small scale water supplies includes a plurality of water holding vessels having water inlet and water outlet couplings operatively coupled in series for series flow of water through the successive vessels. The inlet and outlet openings are located substantially below...     

A bath 10 is provided with a plurality of air nozzles 17. Air is supplied to the nozzles to bubble through water in the bath. To ensure that water does not remain in the nozzles after use of the bath, means 83,85 responsive to the passage of water from the bath is arranged to activate the air supply...     

An apparatus and method of water therapy in which a person is buoyantly supported in a prone position on a top membrane of a water bed mattress containing heat water. A water pump recirculates the water, which is drawn out of the mattress through outlets and associated piping and which is then reintroduced...     

A combined valve and filter mechanism for use in chemical apparatus comprises a valve body having a valve seat connected thereto. A valve stem has a valve at one end thereof for engaging said valve seat and has a cylindrical filter element for telescoping within the valve seat. The mechanism permits...     

Flotation apparatus and methods for separating particles from particulate suspensions such as coal and mineral ore slurries, wherein fluid discharge is removed annularly from a flotation vessel. Preferably, the flotation apparatus includes a vertically oriented, cylindrical flotation vessel having a...     

An aerator for distributing air bubbles in the water of a bait-bucket or aquarium includes a porous hose having a wall in which a multiplicity of relatively small, in transverse cross-section, irregularly shaped, labyrinth-type channel provide many through-the-wall air-seepage passageways allowing air...     

Apparatus for mixing two fluids, which could be a gas and a liquid or two liquids, comprises a planar distribution outlet for the gas or one of the two liquids closing an otherwise airtight chamber and a vibrating membrane as a wall of the chamber. Tbe distribution outlet may itself be a vibrating perforated...     

A gas control apparatus, designed primarily for sewage treatment plants, comprising a large central storage tank containing water with a fluid inlet and a fluid outlet, a gas inlet under pressure a gas flow unit containing in part a baffle with holes, a gas outlet, and a safety outlet venting to the...     

An aquarium filtration system using airlift to circulate water within the living area to display aquatic organisms, water rising up through the bottom gravel, the gravel providing biological filtration. The living area of the acquarium is free from mechanical obstructions and rising air bubbles. A relatively...     

A hermetically sealed unitary liquid container of a thermoplastic material suitable for use in inhalation therapy is disclosed. The humidifier container comprises a body portion defined by an upstanding walled chamber having a bottom, a gas inlet duct unitary with the container body portion and defining...     

A porous, rigid diffuser assembly formed by securing a porous diffuser element to a plastic baseplate along a limited-zone perimeter by temporarily rendering the baseplate semi-plastic, pressing these elements together so that the plastic is pressed into the exposed pores of the diffuser element, then...     

A diffuser assembly for diffusing air into wastewater includes a plurality of diffuser elements arrayed along the bottom of a container for the wastewater. Each diffuser element has an inlet connected to a source of air under pressure and an outlet for discharging air in the form of discrete bubbles....     

A method and apparatus for removing volatile organic contaminants from water. Water to be treated is mixed with a small proportion of higher pressure gas (air, ozone, etc.)-saturated water in a static mixer causing the release of a very large number of very fine gas (air, ozone, etc.) bubbles in the...     

The apparatus includes a powered bowl assembly having a tubular shaft journalled within a base of the apparatus. A pressurized air flow is discharged into slurry in the bowl assembly via a circular array of bubble generators. An impellor discharges the slurry outwardly against an upwardly inclined annular...     

An oxygenator, particularly for proving oxygen and/or carbon dioxide or other gases to culture medium used in the in vitro culture of animal cells, comprised of a collection of elongate gas-permeable, liquid-impermeable tubes through which oxygen-containing gas flows and permeates through the tube walls...     

The element is disposed in a vessel receiving a fluid flow. The vessel wall is porous at least for a proportion of the fluid and bounds an inner chamber communicating through the vessel wall with a chamber outside the vessel. The element is in the shape of a plate or tube and is so devised that the porous...     

This is a water aerating unit which is particularly adapted for aerating bodies of water adjacent the shoreline and is readily transportable from one location to another. A suitable transporting vehicle is provided such as a tractor having a power take-off and hydraulic system for providing the driving...     

The present invention is directed to an efficient aeration system for use in a pool or lagoon. The system employs a venturi nozzle structure for mixing air and water. With this nozzle, multiple air streams surround a water stream to promote effective mixing. The air water mixture is discharged into a...     

A hermetically sealed unitary liquid container of a thermoplastic material suitable for use in inhalation therapy is disclosed as having a signal coupling. A cupshaped female connector is adapted to be threaded onto a gas inlet coupling of the container. A stem portion of the female connector defines...     

An air lift diffuser for use in the aeration of a body of water including an air lift tube and a gas diffuser located a distance below the open bottom end of the air lift tube. The distance in question is sufficiently large that there is substantially no obstruction to the passage of water from the space...     

A motorless continuous carbonator including a double acting piston type water pump driven by a double acting piston type gas pump actuator assembly powered by the carbonating gas. A connecting rod couples the pump piston with the actuator piston and includes means for operating a toggle switch mechanism...     

An apparatus for aerating water, including rigid supporting pipes, which serve to supply air, and covers which are disposed on the supporting pipes close thereto and are provided with a plurality of resiliently expandable slits. The supporting pipes, together with their covers, are disposed virtually...     

Water clarifying apparatus has a cylindrical tank where particulate contaminants suspended in raw water are separated using flotation techniques. A set of concentric mutually spaced, conical plates are positioned in the flotation tank. The plates rotate about the tank, preferably in unison with a (i)...     

A motorless batch carbonator for a carbonated drink dispenser is located in a chilled water bath including a set of evaporator coils located on the outside of the water bath with the ice build up on the inside thereof being controlled by an ice bank detector. The carbonator is comprised of an immersible...     

Wastewater and recycled activated sludge are homogeneously mixed in a first aeration zone by injecting an oxygen-containing gas such as air into the lower portion of the zone under conditions which produce a complete mix reaction and sufficient oxygen is supplied to meet the biological oxygen demands...     

Flowing an ozone-containing gas through one passage which is either the space between an outer tube and an inner tube disposed in the outer tube or the space in the inner tube, and flowing an aqueous liquid through the passage, which the ozone-containing gas is not flowing through, provides aqueous ozone...     

An apparatus and method for separating hydrophilic particles from a fluid suspension containing both hydrophilic and hydrophobic particles. A generally cylindrical separation vessel includes tangential inlet and outlet ports. The fluid suspension is introduced into the separation vessel through the inlet...     

In the representative embodiments of diffusion devices disclosed in the specification, a diffusor support member and a flexible sheet-like diffusor are connected in sealing relation along peripheral edges by continuous clamping and sealing arrangements. One form of the clamping and sealing arrangement...     

An air stone suitable for use in aerating water in an aquarium is formed of a body of porous material permeable to air. Included within the body is a central chamber having an inlet port for receiving a connector, the chamber extending beyond the port to form a plenum for distribution of air throughout...     

An improved gas dissolving and releasing system involving the use of multistages of porous gas dissolving media at the center and near the wall of a pressure vessel is described. The gas dissolving system includes a liquid pressure pump, a pressure vessel with tangential inlet and outlet, a gas injector,...     

A treating process is shown for removing cloggants from the pores and surfaces of aeration diffuser elements used in an activated sludge treatment process or the like. In this process, an acid solution is made to fill the aeration piping network, is fed through the plenum chambers that support the respective...     

A cap-like gas diffuser that produces uniformly sized small bubbles, evenly distributed over the surface of the diffuser is produced by controlling the uniformity of compaction of the particulate material used to form the diffuser during its process of fabrication. Fabrication of the diffuser to provide...     

A column flotation cell includes a fluid vessel, an exteriorly mounted microbubble generator, conduits for conducting a pressurized mixture of bubbles and liquid from the generator to the vessel, features for inhibiting the coalescence and enlargement of the bubbles prior to their introduction into the...     

A sparge assembly including a integral frit can be used with a common test tube. The test tube is retained by a tube fitting on the bottom of an enclosure. An elongated purge gas tube passes through the enclosure and extends downward to terminate near the test tube bottom. The bottom end of the purge...