Showing papers on "Diffuser (sewage) published in 1989"

Diffuser mounting arrangement for waste water aeration systems

Abstract: An improved mounting bracket for mounting diffusers on submerged air lateral pipes in a waste water treatment system. Each mounting bracket includes a pair of complemental saddle sections which can be clamped securely yet releasably on the air lateral with an outlet spout of the saddle in registration with a discharge port in the bottom of the air lateral. A Tee fitting has a pipe nipple connected with its inlet, and the pipe nipple can be threaded into the outlet spout. Virtually any type of diffuser can be solvent welded to each outlet of the Tee fitting. The mounting bracket surrounds and reinforces the air lateral at the diffuser connection point and takes advantage of relatively large diameter pipe at the threaded connection between the outlet spout and pipe nipple. All parts can be PVC or a similar plastic and can withstand the stresses which are applied because of the structural strength of the diffuser mounting arrangement.

System for biological purification of water containing organic materials and derivative products

Abstract: The treatment of water by a biological technique. The water to be treated circulates in the interior of the reactor, in the space (2) located above the partition (1). It is aerated and agitated by a diffuser (3); it enters the reactor by the opening (4) and leaves by the opening (5). A volume of confined water, poor in oxygen, occupies at the bottom of the reactor the space (6) located below the partition (1) and has across its thickness a layer supersaturated in oxygen (10) occupied by the microalgae and aerobic microorganisms; a region rich in oxygen (11) occupied by aerobic microorganisms; a region (12) poor in oxygen and occupied by anaerobic microorganisms; and an intermediate region (13) occupied by aerobic and anaerobic microorganisms. The invention is applicable particularly, in its closed circuit configuration, to aquaria and by means of either a closed circuit or an open circuit, to the treatment of water.

Temperature-regulated garment utilizing a vortex tube

Abstract: The garment of the invention for receiving temperature regulated air from an external air source comprises an outer torso covering layer, a diffuser layer attached to the interior of the outer layer and a belt means for attachment of a vortex tube to an orifice in the garment outer layer.

Lightweight non-welded gas generator with rolled spun lip

Abstract: A non-welded pyrotechnic gas-generating inflator (10) apparatus which comprises: a domed diffuser member (12), open at one end; a closure plate member (15) sealing the open end of the diffuser member (12), the members being mechanically sealed by rolling a peripheral lip portion (14) of the diffuser member (12) over the outer circumference edge of the closure plate member at an angle of about 180 degrees to a remaining lateral wall portion of the diffuser member, and inserting a locking ring member (16) against a bottom surface of the closure member (15) within the periphery of the rolled lip, the locking ring being configured to engage an inner terminal edge portion of the lip, thereby forming a sealed inflator housing; a sufficient amount of a combustible gas generant material (26) within said housing (10) to produce, upon the combustion thereof, a volume of a gaseous product sufficient to substantially inflate an automobile air bag within about 30-60 milliseconds; a combustion initiating device (28) positioned within the housing (10) adjacent the gas generant (26) and a filter assembly (38) for filtering the combustion product prior to its discharge from the inflator (10), the filter assembly (38) circumferentially surrounding the gas generant (26) within the housing (10). In fabricating the inflator, the filter assembly (38) is simply lowered into position within the diffuser (12) and the propellant (26) is lowered into the filter cavity. Subsequently, the closure member (15) is mated to the open end of the diffuser and the lip of the diffuser is rolled over the outer edge of the closure by a rotating mechanical head in the area where they overlap to form a seal therebetween.

Variable vane height diffuser

Abstract: A diffuser vane assembly for a centrifugal compressor includes movable vanes which are inserted or retracted from the diffuser passage through slots in one of the diffuser walls The vane assembly is axially movable by an internally threaded drum and gear arrangement A hand crank external to the compressor is effective to rotate the drum and thereby axially move the plate and attached vanes within the diffuser passage

Pluri-tubular aerator

Abstract: A pluri-tubular aerator includes a vertical central tube member, at least one outer tube member disposed concentrically around said central tube member, and at least one of an diffuser and an air tank disposed on an lower end of the aerator for delivering externally supplied air into the central tube member or a space between the central and outer tube members. The diffuser produces a continuous stream of fine air bubbles while the air tank intermittently produces a bulky air bubble of either a spherical shape or a ring-shape. Preferably, the diffuser and the air tank are used concurrently.

Apparatus and method for the treatment of water with ozone

Abstract: A method for treating water with ozone in which a countercurrent flow of liquids is established within a treatment vessel to insure intimate contact and substantial contact time between ozone and water. The ozone and water are first pre-mixed by passing the ozone through a diffuser into a moving stream of water and the mixture is circulated in a tortuous path through a coil and discharged at the end of the diffuser coil through a number of orifices into the lower portion of the treatment vessel in a generally upwardly and outwardly direction with respect to the vertical axis of the treatment tank. Treated water suitable for bottling and storage is withdrawn from the bottom of the treatment vessel at an elevation below that of the discharge orifices to establish a countercurrent flow between the incoming and outgoing fluids.

Self-heated diffuser assembly for a heat pipe

Abstract: A diffuser unit for allowing non-condensing gases collecting within a heat pipe to be eliminated. The embodiments described herein define a cavity for collection of non-condensing gases such as hydrogen. The housings are arranged such that the heat pipe working fluid in vapor form transfers heat to the walls of the housing defining the collection cavity to raise the wall temperature thus increasing its permeability to the non-condensing gas. Accordingly, when the heat pipe is used in applications where non-condensing gases such as hydrogen tend to diffuse into the heat pipe such as when it is directly heated by a hydrocarbon combustion, such non-condensing gases can be readily eliminated. Such diffusion of non-condensing gases occurs without the requirement of providing a conventional "getter" which uses special material for absorbing or breaking down such non-condensing gases. The diffuser assemblies in accordance with this invention are self-regulating and entirely passive in operation, requiring no external heat inputs or control signals.

Plastic coarse bubble diffuser for waste water aeration systems

Abstract: A generally tubular coarse bubble diffuser for aerating waste water is constructed of polyvinyl chloride or a similar plastic material. The diffuser body has a main section with flat side walls through which outlet ports are formed. The opposite ends of the diffuser body are cylindrical and are connected with the main section by transition sections which avoid abrupt changes in the wall thickness or diffuser connector diameter. One end is solvent welded in a plastic Tee fitting and the other end receives a removable end cap. The flat walls provide efficient oxygen transfer and the cylindrical ends allow the use of a threaded end cap and a secure large diameter solvent weld connection to the Tee fitting which directs air to the diffuser.

Injector having bubble divider

Abstract: The injector has, in its diffuser part having an upper cover plate and lower end plate, impact elements in the form of pins, webs or ribs or shearing elements in the form of perforated cylinders, the impact elements preferably also being arranged, with a narrow gap between each other, so as additionally to exercise a shearing effect. By this means, the division and dispersion of the gas bubbles in the suspension to be floated is further improved.

Self-priming jet pump with an axial diffuser

Abstract: According to the invention a single-impeller centrifugal self-­priming jet pump is obtained with a diffuser (10) of the axial type, which is arranged facing the centrifugal impeller (6) on its suction side. The diffuser (10) presents some return channels (16) with a tendencially radial arrangement having the task of acting as a diffuser and of conveying axially and without rotation into the pressure chamber (17) of the pump casing (2) through a single (mutual) central opening (15), having the shape of a round crown surrounding the collar (21), the medium flowing out of the impeller (6) and into the axial diffuser (10) through some openings (14) arranged along the outer circumferential periphery of said axial diffuser.

Omnidirectional electro-accoustical chamber

Abstract: Omnidirectional electro-acoustical chamber comprising two transducers (4) for low/medium tones and (7) for shrill tones disposed coaxially with their membranes facing one another, the transducer (4) being maintained at the end of the extensions (2) of a compartment (1) and the transducer (7) at the end of the compartment (5), a portion of the sounds emitted by the transducers (4, 7) being diffused by means of a diffuser (9) placed between the membranes, the other portion being reflected on the surfaces (12, 13) of the compartments (1, 5).

Fine-bubble diffuser, especially for water aeration

Abstract: A fine-bubble diffuser for water aeration, having a solid, plate- type base element, a membrane (e.g. a rubber-elastic, perforated diffuser sheet) arranged above the base element and a connecting device for gas-tight connection of edge regions of the membrane to corresponding edge regions of the base element is already known. The known connecting device consists, for example, of edge strips joined by screws or rivets to the membrane and base element, but this represents a relatively expensive type of construction in terms of material, manufacture and assembly. … In the novel gas distributor (diffuser), however, the connecting device (4) consists of at least one snap-fit profile sealing element (e.g. 31) per edge region, the profile shape being such that a connection which is both firmly clamping and sealing results between the particular edge region 3 of the membrane 2 and the corresponding or associated edge region of the base element 1.

Telephone enclosure with illuminated display

Abstract: A telephone enclosure having an upper housing and two spaced apart side housings, defining a telephone recess, illumination tubes in the upper and side housings, displays attached to the upper and side housings, each display having a transparent front panel, a rear diffuser panel, and a frame to enclose the front and rear panels.

Diffuser for mixed gas

Abstract: PURPOSE:To efficiently and safely diffuse gaseous carbon dioxide gas, etc., by jetting a gas from a nozzle toward a Venturi tube, entangling a substance to be mixed, such as gaseous carbon dioxide or agricultural chemical, together with the outside air sucked through the Venturi tube and blowing off the resultant mixture. CONSTITUTION:A substance to be mixed, such as gaseous carbon dioxide or agricultural chemical, released from a nozzle 9, together with the outside air, is mixed and stirred with a gas jetting from a nozzle 5 toward a Venturi tube 10 therein and diffused from the Venturi tub 10 toward plants without waste. Thereby, temperature in the chamber can be made uniform and the gaseous carbon dioxide, etc., can be simultaneously and efficiently diffused.

Biological treatment of malodorous gas

Abstract: PURPOSE: To increase the efficiency of treatment of malodorous gas by forming a fixed bed treating part in a treating vessel and sprinkling water on the treating part while passing the gas through the treating part. CONSTITUTION: The middle part of a treating vessel 1 is packed with an adsorbent of about 1-10mm grain size to form a fixed bed treating part 2. Malodorous gas is introduced from a pipe 3, humidified through a diffuser 5 under bottom standing water 4 and passed through the treating part 2. The malodorous components in the malodorous gas are rapidly adsorbed and removed by the physical adsorbing action of the adsorbent and the gas is discharged as odorless gas into the air from an exhaust system 6. The rate of treatment can be increased. COPYRIGHT: (C)1990,JPO&Japio

Device for tanks for the rearing of aquatic organisms

Abstract: The use of an air diffuser (17) in conjunction with flow guides (14) to create water flow in a basin/tank with shallow water in relation to the width of the tank, to transport solid particles towards a particle trap (23)

Apparatus for detecting the position of contacts of electric or electronic components

Abstract: The apparatus designed according to the invention comprises - a supporting surface for the components (Be) in the form of a flat diffuser screen (S), - at least one light source (L), preferably an infrared diode, for illuminating the lower side of the diffuser screen (S) and - a camera device (Ba) pointing at the lower side of the diffuser screen (S). On the lower side of the diffuser screen (S) there appears a precise image showing only the contacts of the component placed thereon.

One piece air diffuser

Abstract: An air diffuser constructed from single piece of material, wherein the mounting member and diffuser sections are formed in a series of stamping operations and are interconnected by a plurality of integral links.

Working boat for washing and degerming laver and method for treatment

Abstract: PURPOSE:To readily remove foulings with bubbles and upwelling streams, by loading a treating solution container having a diffuser onto a washing and degerming working boat for laver nets CONSTITUTION:A hollow diffuser 4 constituted of porous members is provided on the bottom of a boat-shaped device 3 storing a treating solution 2 on a working boat 1 moving under laver nets for culture and air is jetted from the diffuser 4 into the treating solution and produce upwelling streams A culture net 9 spread on the vessel sags by its own weight or a weight 11 and dipped in the treating solution 2 to carry out washing and degerming treatment of laver leaf bodies with the upwelling streams

Microorganism treating device

Abstract: PURPOSE:To miniaturize the whole treating facilities and to reduce cost of power, by equipping a treating tank for waste liquor with a diffuser to circulate and make a solution flow by bubbling and setting a membrane separating device to take out treated water in a circulation channel thereof. CONSTITUTION:A treating tank 1 to treat waste water such as sewerage, human waste or industrial waste water with an aerobic microorganism is equipped with a diffuser 2 and a blower 3 which circulate the solution to be treated and make the solution flow by bubbling and a membrane separating device 5 to separate a treated solution from the tank into solid and liquid and to take out is set in a circulating channel in the tank. The diffuser 2 is preferably a liquid agitator of mechanical blending. The treating tank 1 is preferably a tank of pressure type. The membrane separating device 5 is preferably equipped with a suction pump P because of suction of membrane permeated water.

Perfume diffuser suspended from chain in vehicle - has small receptacle closed by stopper with porous top and tube through it dipping into perfume

Abstract: The perfume diffuser has a small bottle (2) that is closed by a stopper (5) screwed on the neck of the bottle. A tube (4) passes through the stopper and extends half way down the bottle. It has a piece of spongy material (3) on its lower end. The stopper has porous material (6) fixed on its upper surface. A chain (8) is bonded or screwed to the porous material so that the diffuser can be suspended. The perfume is expanded by heat and rises up the tube and intothe porous material from which it slowly evaporates. USE - The perfume diffuser is for use in a vehicle.

Device for treating sewage by hollow-fiber membrane

Abstract: PURPOSE: To prevent the clogging of a hollow-fiber membrane, to provide flexibility to the capacity and to make the device compact by forming the device with a bioreactor, a solid-liq. separation tank, a bundle of hollow-fiber membranes, an intermittent sucking means, a timer for setting the suction time and a means for returning the liq. concentrate in the separation tank to the bioreactor. CONSTITUTION: Organic sewage is introduced into bioreactor 3 and mixed with activated sludge to obtain a liq. mixture 5, air is supplied to a diffuser pipe 6 at the bottom from an aeration blower 7, hence the org. matter in the sewage is adsorbed on an aerobe floc, oxidized and decomposed, and the sewage is purified. The treated water contg. activated sludge is sent to a solid-liq. separation tank 12 by a pump 9, and sucked into a suction chamber 14 through the micropores of a hollow-fiber membrane. 13. The sucked liq. is drawn off from a water pipe 18 as treated water, and the liq. concentrate not sucked by the membrane is returned to the bioreactor 3 through a water pipe 15. A suction device 16 is intermittently operated by an intermittent timer 17 to control the flow rate of the water permeated. COPYRIGHT: (C)1990,JPO&Japio

Sewage treating device by hollow-fiber membrane bundle

Abstract: PURPOSE: To prevent an increase in required power by allowing a liq. mixture contg. flocs treated by a biological treating tank to flow in an inclined pipe to separate solid and liq. CONSTITUTION: Solid matter is separated from raw org. sewage by a sand removing device 1 and a screen 2, and the sewage is introduced into a bioreactor 3 from an inflow pipe 4. The org. sewage is mixed with activated sludge in the bioreactor 3 to form a liq. mixture 5. Air is supplied into the bioreactor 3 from a diffuser pipe 6 at the bottom, hence the org. matter in the sewage introduced into the bioreactor 3 is adsorbed on an aerobic micro-organismic floc, oxidized and decomposed, and the sewage is purified. The treated water contg. activated sludge is sent to the inclined pipe 10 from an outflow pipe 8 by a pump 9. Consequently, the capacity is easily increased or decreased. COPYRIGHT: (C)1990,JPO&Japio

Radial discharge centrifugal compressor

Abstract: PURPOSE: To minimize losses in a diffuser by means of a plurality of vanes with at least vanes of a first stage having shapes configured as supercritical airfoils CONSTITUTION: An annular diffuser 26 is interposed between an impeller 10 and a collector 20 The diffuser 26 comprises diffuser vanes 30 of a first stage disposed at radially inner side adjacent to discharge ends 18 of blades 16 of the impeller 10, and diffuser vanes 32 of a second stage arranged radially outer of the diffuser vanes 30 of a first stage and aligned with corresponding diffuser vanes 30 of a first stage The diffuser vanes 30 have shapes configured as supercritical airfoils

Air fragrance diffuser intended in particular for impregnating an artificial plant or flower or a floral arrangement, and artificial plant or flower or floral arrangement thus fragranced

Abstract: The present invention relates in particular to an air fragrance diffuser, the said fragrance being intended to impregnate an article within which the diffuser is concealed, the said diffuser being of the type consisting of a casing (1) which encloses the fragrance and which has perforations (2) for permitting the escape of the said fragrance. The said diffuser is characterised in that the outer wall of the casing (1) comprises means (3) for fastening the said casing to at least one part (4) of the article to be impregnated or to complementary means supported by the said article. Applicable in particular to the impregnation of artificial plants and/or flowers and/or floral arrangements.

Solid-liquid separation

Abstract: PURPOSE:To purify waste water with high efficiency by forming a packed bed with a ceramic having a specified shape as the filter medium in the biochemical treatment of waste water. CONSTITUTION:A ceramic filter bed 8 is provided in the ceramic filter A, and a ceramic saddle or ring having large surface area per unit area and void ratio is packed as the filter medium. Waste water is introduced into the filter bed 8 from the upper part of the filter A, the SS is collected by the ceramic, hence the water is purified, and the clean treated water 6 is discharged from the lower part. When the filter bed 8 is practically clogged, air is introduced from an air diffuser pipe 5 by a backwashing blower 4, water is also introduced by a backwashing pump 3, and the deposited SS is almost completely removed.