Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 8163174 | Submerged biofiltration purifying apparatus A submerged biofiltration purifying apparatus includes a settling zone being a 3D space having open top, bottom, and two lateral sides; one or more filtering zones coupled to the two lateral sides of the settling zone, and each being a 3D space with open sides and h... | 04/24/2012 |
| 8142651 | Mass transfer tank system A tank has a side wall bounded by a top and a bottom. An axis extends vertically through the tank. An inlet line for water of a first condition extends through the top with a lower end at a lower extent of the tank. An outlet line for water of a second condition has... | 03/27/2012 |
| 8123936 | Wastewater treatment system with ultraviolet unit A wastewater treatment system for processing borne wastewater. The treatment system having a tank with an inlet and an outlet and an access assembly residing at the top of the treatment tank. The treatment tank having an aeration chamber where oxygen is added to the... | 02/28/2012 |
| 7897042 | Entrapping immobilization pellets for purifying breeding water, process and apparatus for purifying breeding water, and aquarium set Entrapping immobilization pellets for purifying breeding water in an aquarium to breed aquatic animals, wherein the entrapping immobilization pellets have a phosphorus content of 0.05 mass % or less. ... | 03/01/2011 |
| 7892424 | Decentralized source separation sewage system An apparatus and method for treating sewage The apparatus receives sewage at a receiving compartment and separates solids from liquids at the receiving compartment. The solids can be extracted from the receiving compartment by an auger. The liquid sewage flows throu... | 02/22/2011 |
| 7862711 | Biofilter units and water treatment facilities with using the same biofilter units Wastewater treatment facilities having biofilm contact and solid-liquid separation functions are disclosed, wherein a biofilter unit having biofilm contact, inclination plate precipitation and de-filming functions comprises an inclination plate settler formed with a... | 01/04/2011 |
| 7811449 | Flow equalized rotating biological contactor A wastewater treatment system is provided that utilizes an equalization tank that stores hydraulic surge flows from the collection system and uses a waterwheel to transfer a maximum flow equal to plant design flow to the downstream treatment systems. The waterwheel ... | 10/12/2010 |
| 7807053 | Water filtration system A filtration system for an aquarium is provided. The filtration system includes a gate chamber with a gate conduit positioned therein that transports unprocessed water from the aquarium. The gate chamber includes filtering media. The filtration system also includes ... | 10/05/2010 |
| 7794590 | Entrapping immobilization pellets for purifying breeding water, process and apparatus for purifying breeding water, and aquarium set Entrapping immobilization pellets for purifying breeding water in an aquarium to breed aquatic animals, wherein microorganisms are entrapped and immobilized in an aqueous polymer gel and the entrapping immobilization pellets are co... | 09/14/2010 |
| 7754072 | Water feature construction A water feature for use in landscaping applications. A water issuing device, such as a waterfall construction is provided for receiving water and discharging water onto a gravel bed. The bed is positioned below the waterfall and forms a path or surface along which t... | 07/13/2010 |
| 7744755 | Biological treatment and filtration system equipment The present invention provides a biological treatment and filtration system equipment that can reliably remove most of materials harmful to the human body and arsenic components not capable of being removed until now, which are contained in the raw water, by a serie... | 06/29/2010 |
| 7731841 | Flow control systems and methods for artificial ponds An aerator system for an artificial pond comprising an aerator housing defining an aerator chamber, filter media arranged within the aerator chamber, and a control valve assembly. The aerator housing defines first, second, and third aerator housing ports. The filter... | 06/08/2010 |
| 7731842 | Submerged fixed film anoxic bioreactor A constant velocity serpentine anoxic reactor incorporates a multiple cell vertical serpentine path, as well as a horizontal serpentine path, through the anoxic chamber. A fixed film media is mounted within each cell of the anoxic chamber to provide a structure on w... | 06/08/2010 |
| 7670484 | Filter cartridge construction with carbon profile A filter cartridge including a filtering body having first and second porous filter walls. The second porous filter wall having a density that is different than the first porous filter wall. The density of the second porous filter wall being defined by interstitial ... | 03/02/2010 |
| 7662279 | Filtering device, in particular for fish basins A filtering device, in particular for fish basins, having a housing (10) encompassing a filter chamber (20) and a filter drum (30), which is rotatably disposed in the filter chamber (20) and is loadable with water to be purified, about wh... | 02/16/2010 |
| 7604734 | Water filtration system A filtration system for an aquarium is provided. The filtration system includes a gate chamber with a gate conduit positioned therein that transports unprocessed water from the aquarium. The gate chamber includes filtering media. The filtration system also includes ... | 10/20/2009 |
| 7601259 | Aquarium filter An aquarium filter assembly is mounted to an aquarium tank and defines a water flow path therethrough from upstream to downstream from an inlet to an outlet. A replaceable filter element is mounted in a filter chamber. ... | 10/13/2009 |
| 7597801 | Fluids fluxion method and plant for wastewater treatment A wastewater treatment plant includes a reaction tank connected to an wastewater supply tube and an aeration apparatus to receive wastewater therein, a sludge separation unit dividing an internal space of the reaction tank into upper and lower sections to increase a... | 10/06/2009 |
| 7510649 | Top loading vertical flow submerged bed wastewater treatment system A system for treating wastewater having a treatment bed of particulate material, inflow distributing plumbing for applying wastewater from a wastewater supply source to upper part of the treatment bed. The wastewater percolates downwardly through the particulate mat... | 03/31/2009 |
| 7504026 | Ultrasonic solution separation apparatus The ultrasonic solution separation apparatus oscillates an undiluted solution containing a target material at an ultrasonic frequency to produce mist, and collects the mist to collect a target material containing liquid that contains the target material with higher ... | 03/17/2009 |
| 7488413 | Waste water treatment plant and method A waste water treatment plant includes a treatment chamber or reactor (26) containing a plurality of buoyant sludge carriers (38). In the base of the treatment chamber (26) is a biofilm collection chamber (40). Arranged coaxially within t... | 02/10/2009 |
| 7465390 | Low aspect ratio wastewater system A leaching conduit comprising: a low aspect ratio channel; a pipe in fluid communication with the low aspect ratio channel; wherein the aspect ratio of the low aspect channel is configured to promote aerobic conditions in and around the leaching conduit. A wastewate... | 12/16/2008 |
| 7442295 | Water purification and treatment apparatus and treatment process using the apparatus The present invention provides a water purification and treatment apparatus using a combination of sedimentation, filtration, and bio-contact aeration processes, which comprises at least one rapid water purification filter having a hopper base for settled sludge and... | 10/28/2008 |
| 7429320 | Wastewater treatment system A method and apparatus for remediating a failing wastewater treatment system comprising (a) a positive oxygen and ozone-generating, or ozone-generating only, pressure pump having an output, (b) a tube having a first end and a second end, the first end being attachab... | 09/30/2008 |
| 7425274 | Aquarium filter unit An aquarium filter which is constructed of a housing which includes a module. The module is divided into a plurality of different sections. A separate filter cartridge is to be mounted within each section. Each filter cartridge is to be removable and replaceable in ... | 09/16/2008 |
| 7402248 | Active biological contactor (ABC); a modular wastewater treatment system A method and system for wastewater treatment includes flowing a quantity of a wastewater into a first microbubble chamber having a plurality of diffusers for injecting microbubbles into the wastewater to promote oxygenation. The microbubble includes activated sludge... | 07/22/2008 |
| 7396453 | Hydraulically integrated solids/liquid separation system for wastewater treatment A system and method for treating wastewater includes a treatment container for receiving and treating wastewater and a mixing/aeration system disposed in the treatment container. Wastewater is pumped under pressure from the treatment container through a solids/liqui... | 07/08/2008 |
| 7396454 | Method for cleaning tar-bearing waste water and apparatus for performing said method In a method and an apparatus for cleaning tar-bearing waste water (17), a mixture of water and hydrocarbons, e.g. comprising polyaromatic hydrocarbons and phenols, the mixture is separated into a low-boiling-point part and a high-boiling-point part, bringing ... | 07/08/2008 |
| 7390410 | Method and apparatus for the anaerobic treatment of waste A method and apparatus for the anaerobic treatment of waste water is described which includes a plug flow bioreactor containing a single bed of inert microbial attachment media and anaerobic microorganisms, and having at least one baffle member which forms a first z... | 06/24/2008 |
| 7378022 | System and methods for biological selenium removal from water A biological system for removing selenium from waste water comprises a first immobilized cell bioreactor (ICB) and a selenide removal module. The first ICB comprises a chamber having a substrate housed therein and situated to contact the waste water flowing therethr... | 05/27/2008 |
| 7371323 | System and method for reducing wastewater contaminants A wastewater treatment system. Toilet, kitchen, commercial, and industrial process waste is segregated from the total wastewater stream and treated in order to reduce the total nitrogen, phosphorous, pathogens, household hazardous and hazardous wastes and organic ca... | 05/13/2008 |
| 7361268 | Waste treatment systems Waste treatment systems and methods of using them to treat septage, domestic sludge or both are disclosed. Certain examples provided herein relate to waste treatment systems that include a plurality of stages, such as, for example, a plurality of ecosystems, configu... | 04/22/2008 |
| 7344644 | Method and system for purifying water The disclosed methods and systems of water purification relate to burying an underdrain in situ under a filter media bed such as a particulate material bed, within a natural body of water. A pump is provided for withdrawing water from the underdrain at a sufficient ... | 03/18/2008 |
| 7341660 | Unitary three stage wastewater treatment system The invention is a three stage wastewater treatment system having a first tank, a second tank and a third tank, all in fluid communication and forming a unitary structure. The first and second tanks are nested, where the first tank is the innermost tank. The first t... | 03/11/2008 |
| 7341662 | Distribution and collection headers for a filter bed A filtration vessel has an inlet for inflow into the filtration vessel of liquid media to be filtered, a body of filter media in the filtration vessel, and a drain to receive filtered liquid media for take off from the filtration vessel. The inlet is configured to i... | 03/11/2008 |
| 7335298 | Modular aquarium filter A modular aquarium filter includes one or more cartridges connected in series. The cartridges may contain filter media for chemical, biological and/or mechanical filtration. In addition, the cartridges are designed such that they provide a unique internal helical ge... | 02/26/2008 |
| 7332078 | Apparatus for recovering energy from turbulence created within an aerobic biological reactor A novel method and apparatus that takes advantage of both the aeration dynamics provided along with the free resulting hydro energy created by the flotation dynamics of the air bubbles and most importantly recover more energy than is required to operate the aeration... | 02/19/2008 |
| 7329340 | Continuous multistage thermophilic aerobic and aerobic-anaerobic sludge treatment systems A continuous flow multistage aerobic wastewater sludge digestion system comprising at least two stages connected in series, each stage comprising one or more covered tanks, tank segments or compartments, each having an enclosed separate gas headspace, wherein the ga... | 02/12/2008 |
| 7329341 | Wastewater treatment device A wastewater treatment device treats nitrogen wastewater containing hydrogen peroxide by using micro/nano bubbles generated in a micro/nano bubble reaction tank. Thereby, activity of microbes is increased in next denitrification tank and nitrification tank, so that ... | 02/12/2008 |
| 7329350 | Filtration system A filtration system comprises a filtration container housing filter media treated to reduce waste in water pumped into the filtration container. An impeller is mounted on the filtration container and forces water and filter media within the container to move within ... | 02/12/2008 |
