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| Number | Title | Issue Date |
| 7497421 | Apparatus for the gasification of liquids An apparatus for the gasification or aeration of liquids. Elongated aeration elements are connected to a distribution conduit and have an essentially rigid support tube having a lengthwise rounded groove about which is disposed a membrane of elastomeric material. Co... | 03/03/2009 |
| 7351576 | Compost tea machine The invention relates to an in home apparatus for simultaneously suspending, aerating, agitating, extracting and entraining a compost water nutrient culture. A beaker contains the compost nutrient water culture. A perforated elastic membrane transversely covers the ... | 04/01/2008 |
| 7311299 | Aeration device and aeration system The present invention provides an aeration device made up of a rectangular elastic porous body, a support base supporting the elastic porous body from below and having an orifice for pressurized air, and a securing component which secures the elastic porous body to ... | 12/25/2007 |
| 7267766 | Method and apparatus for aerating a surface layer in a stratified liquid body A method and apparatus for aerating a surface layer in a stratified liquid body using a depth-adjustable, fine bubble, surface layer aeration unit comprising: a body comprising at least one hollow internal structure; | 09/11/2007 |
| 7255333 | Strip diffuser Membrane strip diffusers are disclosed, useful for example in aerating wastewater in activated sludge plants. These diffusers have membranes, diffuser bodies and gas conduits elongated in the same general direction. Such conduits may be attached to or formed integra... | 08/14/2007 |
| 7243912 | Aeration diffuser membrane slitting pattern A diffuser assembly for diffusing a fluid from a fluid source into a medium to aerate the medium. The diffuser assembly including a diffuser body in fluid communication with the fluid source and a membrane connected to the diffuser body. The membrane is circular and... | 07/17/2007 |
| 7229559 | Dual-action decontamination method Hydrophobic polymer particles (e.g., granules or fragments) employed as filter media, e.g., for filtering runoff water, include an antimicrobial compound on exterior surfaces and can reduce proliferation of microbial organisms as well as sorb chemical contaminants f... | 06/12/2007 |
| 7125823 | Methods of making dual-action decontamination media Hydrophobic polymer particles (e.g., granules or fragments) employed as filter media, e.g., for filtering runoff water, include an antimicrobial compound on exterior surfaces and can reduce proliferation of microbial organisms as well as sorb chemical contaminants f... | 10/24/2006 |
| 7080828 | Clarification basin membrane A clarification basin membrane made of a polymeric, in particular, elastomeric material, which is rendered gas-permeable by a perforation, whereby a permanent gas permeability is effected by mixing a wast water biologically active inhibitor with the polymeric materi... | 07/25/2006 |
| 7044453 | Membrane diffuser with uniform gas distribution A flexible diffuser membrane is provided with a unique system of perforations arranged to result in uniform distribution of gas even though the membrane deflects to different extents or the submergence varies in different parts of the membrane. The perforations are ... | 05/16/2006 |
| 7014173 | Cyclic aeration system for submerged membrane modules An aeration system for a submerged membrane module has a set of aerators connected to an air blower, valves and a controller adapted to alternately provide a higher rate or air flow and a lower rate of air flow in repeated cycles. In an embodiment, the air blower, v... | 03/21/2006 |
| 7014176 | Fluid distribution system and associated methods A fluid grid system for use with filter systems and other fluid handling devices. Preferably, the fluid grid system is designed such that components thereof may be readily connected to each other without the use of clips or other fasteners. Further, the fluid grid s... | 03/21/2006 |
| 6880815 | Apparatus for aerating water An apparatus for aerating water or other liquid is provided, and includes a flexible hose of rubber or other elastomeric material for disposal in the water or other liquid. The wall of the hose has a perforation, fine slits, openings or the like via which gas can es... | 04/19/2005 |
| 6863823 | Inverted air box aerator and aeration method for immersed membrane An aerator for immersed filtering membranes has an aerator shell with openings for discharging bubbles from its upper surface and a shape capable of temporarily containing a volume of air in fluid communication with the openings. The shell is open to tank water belo... | 03/08/2005 |
| 6769673 | Apparatus for the gasification of liquids An apparatus is provided for the gasification or aeration of liquids. Elongated aeration elements are connected to a distribution conduit and have an essentially rigid support tube about which is disposed a membrane of elastomeric material. Compressed gas introduced... | 08/03/2004 |
| 6619633 | Apparatus for aerating water An apparatus for aerating water is provided, and includes a support body and disposed thereon a slitted sleeve of rubber or similar elastomeric material. The support body has sides of greatly different lengths, with the longer sides being essentially vert... | 09/16/2003 |
| 6550747 | Cyclic aeration system for submerged membrane modules An aeration system for a submerged membrane module has a set of aerators connected to an air blower, valves and a controller adapted to alternately provide a higher rate of air flow and a lower rate of air flow in repeated cycles. In an embodiment, the ai... | 04/22/2003 |
| 6543753 | Air diffuser membrane treated with biocide A fine bubble diffuser membrane used in the aeration of wastewater is treated with biocide to inhibit growth and accumulation of biological materials on the membrane. The membrane may be constructed of EPDM rubber or urethane. The biocide may be carbolic ... | 04/08/2003 |
| 6497402 | Diffuser mounting system for aeration of liquids A diffuser mounting assembly includes two saddle sections having integral outlet fittings to which elongated air diffusers can be mounted for aerating liquid in a basin. Air laterals installed in the basin receive the saddle sections on opposite sides so ... | 12/24/2002 |
| 6406005 | Diffuser for aerating a fluid A diffuser for aerating a fluid, and particularly for aeration in waste water treatment tanks, is formed in an elongate configuration by manufacturing a base plate from an extrusion cut to the desired length. A perforated elastomeric membrane is secured t... | 06/18/2002 |
| 6367784 | Apparatus for aerating water An apparatus for aerating water with fine bubbles is provided. At least one strip-like, inextensible aerating element is provided that has an air supply channel and there above a portion that is provided with slits which elastically widen under the effect... | 04/09/2002 |
| 6367783 | Fine bubble diffuser A diffuser includes a substantially rigid base member having a first side and a second side, and an inlet conduit defining a central bore depending from the second side of the base member. A resilient dome member having a plurality of perforations is seal... | 04/09/2002 |
| 6345812 | Plate-like water aerator A plate-like water aerator is provided. A plate, made of elastomeric material, is disposed on a rigid, essentially planar mounting support and covers the one or more air supply connections thereof. The plate is provided with fine slits for the discharge o... | 02/12/2002 |
| 6344147 | Flotation plant A flotation plant comprises air supply means with which air bubbles can be supplied to a basin to which untreated water is supplied so as to cause flakes suspended in the untreated water to float by aid of the air bubbles; the air supply means includes st... | 02/05/2002 |
| 6276669 | Bubble generating device A bubble generating device is to be used with a water tank which has a water receiving chamber, and includes a bubble emission member adapted to be disposed in the water receiving chamber and formed with bubble emission holes, an air pump for providing pr... | 08/21/2001 |
| 6145817 | Water aerating device or diffuser A water aerating device is provided and includes a rigid, round, support plate that in an operating position is disposed essentially horizontally. An elastic plate rests on the support plate and is provided with a plurality of fine slits such that by at l... | 11/14/2000 |
| 5938983 | Aeration device A bubble diffusion aerator mounted onto a "pot" aerator, for oxygenating a body of water. The bubble diffusion aerator comprises spiral coils of perforated flexible tubing mounted onto a flat frame, with a single air feed line connected to the tubing at a... | 08/17/1999 |
| 5868971 | Device for introducing gases into liquids in fine bubbles A device for introducing gases into liquids in the form of fine bubbles, especially for introducing air into waste water, which device (1) comprises gas distributors (2) consisting of a longitudinal chamber (20) covered by a porous foil (19) arranged bene... | 02/09/1999 |
| 5858283 | Sparger A large area sparger has a gas-permeable diffuser bonded to a gas-impermeable underlying element so that inflowing gas is distributed throughout a gap between the sparger and the underlying element. Bonding regions interconnect the diffuser and the underl... | 01/12/1999 |
| 5846412 | Diffuser construction and mounting arrangement An improved air diffuser and mounting arrangement for mounting diffusers on submerged air laterals in a wastewater treatment system. The diffuser is formed form a cylindrical pipe which is flattened on most of its length but left partially cylindrical for... | 12/08/1998 |
| 5804105 | Device for diffusing a first fluid into a second fluid A fluid diffuser includes an inner extruded tube and an outer extruded tube between which there is a woven fabric material tube. The diffuser includes pores formed by a non-ablative piercing process and being arranged to act as valves which are self-closi... | 09/08/1998 |
| 5788847 | Diffuser construction and mounting arrangement An improved air diffuser and mounting arrangement for mounting diffusers on submerged air laterals in a wastewater treatment system. The diffuser is formed form a cylindrical pipe which is flattened on most of its length but left partially cylindrical for... | 08/04/1998 |
| 5762835 | Aerator Aerator with a basic body (10) that can be connected to an air feed (50) pipe and with a diaphragm (20), which can be attached to the basic body (10) and whose edge (20r) can be fixed to the circumferentail surface (10r) of the basic body (10) by a static... | 06/09/1998 |
| 5725129 | Dual-container foam dispenser An inner container is disposed within an outer container containing an amount of foamable liquid sufficient to provide a substantial foam production capacity. The dual-container foam dispenser is provided with a porous diffusing element having material su... | 03/10/1998 |
| 5705063 | Ventilating disk assembly The present invention relates to an improved ventilating disk assembly. When the air pressure applied thereof is changed, different stirring effect can be attained and the debris or soil accumulated onto the ventilating disk can be readily removed. The im... | 01/06/1998 |
| 5693265 | Water aerator A water aerator is provided that has a rigid support plate that in the operating position is disposed essentially horizontally. The support plate has a practically planar upper surface and at least one aperture for air. An elastic plate of elastomeric mat... | 12/02/1997 |
| 5676890 | Aeration device Described is a gas-introduction device designed to introduce a gas into a liquid. The device comprises at least one gas-feed manifold (10) and a multiplicity of tubular feed-in elements (12) which are open at the free end. Each feed-in element is surround... | 10/14/1997 |
| 5676823 | Sparger system including jet stream aerator A sparging system assembly having an improved nozzle for use in a flotation separation column. The sparging system of the present invention uses an elastomeric check valve type nozzle to form the desired size of flotation bubbles in the column. The system... | 10/14/1997 |
| 5480593 | Subterranean air lift diffuser assembly An air lift diffuser assembly is made up of an air lift tube and a fixed, non-rotating bubble-emitting diffuser horizontally spaced beneath an open end of the air lift tube, the air lift tube and diffuser being releasably positioned in centered relation t... | 01/02/1996 |
| 5458771 | Apparatus for the gasification of liquids An apertured flexible membrane (10) extends over a domed support (11). A central gas supply tube (50,82) terminates in gas outlets (51) oriented to direct the gas to flow horizontally into the space (40) between the membrane and the support to inflate the... | 10/17/1995 |
