| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 210616000 | Particulate media | 46 |
| 20100044305 | Wastewater treatment system and process utilizing solids based bacterial colonization (SBBC) - Wastewater treatment system and process in which the influent is passed through a mixing chamber and then through a series of filters of progressively smaller size to separate the materials carrying the colonized bacteria from finer solids in the influent and separate the materials according to size. The materials from the filters are progressively reduced to a smaller size, the materials of smaller size are returned to the mixing chamber, and new influent is inoculated with the colonized bacteria carried by the materials returned to the mixing chamber. | 02-25-2010 |
| 20100193432 | DIGESTING AND CONTINUOUSLY SELF-CLEANING AQUARIUM FILTER - A method and system for filtering water in aquarium tanks comprising: a macerating/comminuting chamber with a continuously self-cleaning screen covering the discharge outlet that only allows, optimally sized, easily digestible, organic material to pass out of the macerating/comminuting chamber and into an, optionally self-cleaning, media containing denitrifying microbes. There are three different embodiments that use the method of the current invention. These comprise: a reverse flow under-gravel filter apparatus with the macerating/comminuting chamber and filter screen on the discharge side of the pump, a reverse flow under-gravel filter apparatus with the macerating/comminuting chamber and filter screen on the inlet side of the pump, and an external box filter apparatus with the macerating/comminuting chamber on the discharge side of the pump. | 08-05-2010 |
| 20100219126 | WASTEWATER TREATMENT METHOD USING IMMOBILIZED CARRIER - To provide an inexpensive wastewater treatment method which facilitates downsizing of tanks and requires less withdrawal of an excessive sludge, the use is made of an aeration tank | 09-02-2010 |
| 20110089107 | INTIMATE COUPLING OF PHOTOCATALYSIS AND BIODEGRADATION IN A PHOTOCATALYTIC CIRCULATING-BED BIOFILM REACTOR - Systems and methods are provided for intimately coupling advanced oxidation process (AOP) with biodegradation for the treatment of contaminated water. The system comprises a particulate bed having carrier particles that have a microbial film effective for biodegrading contaminants in the contaminated water. An advanced oxidation reagent is irradiated by a radiation source to provide an advanced oxidation reagent effective for oxidizing recalcitrant compounds in the contaminated water to form biodegradable byproducts. The microbial film is effective for biodegrading the byproducts substantially immediately after they are produced. The carrier particles are also effective for protecting the microbial film from the radiation and/or the recalcitrant compounds. | 04-21-2011 |
| 20110186509 | PROCESSING OF WATER USING MICROORGANISMS - A method for microbiologically processing water includes treating the water in a bioreactor with microorganisms, wherein at least 70% of the microorganisms can break down 2-propanol and/or acetone. | 08-04-2011 |
| 20110272350 | Methods for Treatment of Waste Activated Sludge - A process for treating waste primary or activated sludge solids that have been removed to a digester phase of the activated sludge process through the use of powdered natural lignocellulosic materials (PNLM) and/or powdered kenaf core (PKC). These materials help this process by: (a) thickening of primary and/or waste activated sludge through adsorption, attached growth and achieving closer proximity of organisms by stimulating reduction of their associated ECP substance; (b) enhancing endogenous reduction of primary and/or waste activated sludge by thickening (see above) and improving the ratio of available carbon to available nitrogen by delivering a continuing gradual release of sugar from degrading PNLM and/or PKC; (c) enhancing the speed of endogenous reduction of primary and/or waste activated sludge—through higher efficiencies (same processes as above); and (d) improving dewatering characteristics of wasted primary and/or wasted activated sludge solids (through reduction and breakdown of ECP materials and higher densification of solids). | 11-10-2011 |
| 20110284461 | Controlled Aeration of Integrated Fixed-Film Activated Sludge Bioreactor Systems for the Treatment of Wastewater - A method of biologically treating wastewater with an integrated fixed film activated sludge process. The integrated fixed film activated sludge process includes biomass suspended in mixed liquor and biomass disposed on carriers. Under certain conditions the dissolved oxygen concentration in a reactor that includes the mixed liquor, biomass suspended in the mixed liquor, and the biomass on the carriers, biological treatment is performed primarily by the biomass in the mixed liquor. This is achieved by controlling or maintaining the dissolved oxygen concentration in the reactor at a relatively low concentration. When the biomass suspended in the mixed liquor is unable to adequately biologically treat the mixed liquor, the dissolved oxygen concentration in the reactor is controlled or maintained at a relatively high concentration. This enables biomass on the carriers to contribute more to the biological treatment of the mixed liquor than when the dissolved oxygen concentration was maintained relatively low. | 11-24-2011 |
| 20110315629 | SUBMERGED MEMBRANE BIOREACTOR SYSTEM AND BIOLOGICAL METHODS FOR REMOVING BISPHENOL COMPOUNDS FROM MUNICIPAL WASTEWATER - The present document describes a process and a bioreactor for reducing a bisphenol compound content of a wastewater using a membrane bioreactor containing a biomass in a volatile suspended solid (VSS) form where the biomass in the membrane bioreactor is operating continuously to reduce bisphenol compound content when the bisphenol compound volumetric load is below 108 g m | 12-29-2011 |
| 20120118819 | IN-SITU, MICROBIAL BIO-REMEDIATION OF AQUATIC ENVIRONMENTS - A method for facilitating growth of microbial communities for in-situ bodies of flowing water for the sake of bio-remediating contaminated water and/or producing useful biomass. | 05-17-2012 |
| 20120267305 | METHOD AND DEVICE FOR BIOLOGICALLY CLEANING WASTEWATER - The invention relates to a method for biologically cleaning wastewater (A), comprising the following steps: providing a treatment basin (B) having a floor ( | 10-25-2012 |
| 20130032533 | INTEGRATED MEMBRANE SYSTEM FOR DISTRIBUTED WATER TREATMENT - Integrated membrane treatment systems for treatment of an aqueous solution. In embodiments, components, such as an MBR, are integrated with means to recover energy from the system, for example from an RO concentrate, to operate the other components. In embodiments including biological treatment, RO is integrated with other components, such as an MBR with the ROs ability to remove inorganic nitrogen enabling biological treatment to be performed with only partial nitrification and the MBR operated without active pH control. In embodiments, RO is integrated with a chlorine generator to convert chlorides present in the RO concentrate for an in-situ source of oxidizing biocides for disinfection purposes. Chloramines may be generated in-situ from residual ammonia and chlorides in the RO reject. In embodiments, carrier media is employed in a membrane tank to enhance removal of residual organics by the MBR and to also improve effectiveness of membrane scouring. | 02-07-2013 |
| 20130180916 | BIOLOGICAL PURIFIER, BIOLOGICAL PURIFICATION SYSTEM, AND BIOLOGICAL PURIFICATION METHOD FOR UNTREATED WASTE WATER - A biological purifier of the present invention includes chaff retaining sulfate-reducing bacteria. A biological purification system of the present invention includes a treatment container in which anaerobic conditions are maintained, and the above biological purifier is stored; a supply system for supplying the untreated waste water into the treatment container; and an discharge system for discharging treated water from which the heavy metal ions have been removed in the treatment container by the purifier, from the treatment container. In a biological purification method of the present invention, the biological purifier and the untreated waste water are brought into contact with each other under anaerobic conditions, thereby precipitating and removing the heavy metal ions as sulfide from the untreated waste water. | 07-18-2013 |
| 20130233794 | METHOD FOR TREATING WASTEWATER WITH BACTERIA-LOADED LIGNOCELLUOSIC MATERIAL - A method for treating wastewater through the use of powdered natural lignocellulosic materials (PNLM) and/or powdered kenaf (PK). The method includes mixing particulate kenaf with microorganisms to form an effector composition, mixing the effector composition with influent wastewater, oxygenating the wastewater, reacting the wastewater and clarifying the wastewater, resulting in improvement in the microbial population effector composition in the wastewater. | 09-12-2013 |
| 20130306555 | MATERIALS AND METHODS FOR ENVIRONMENTAL CONTAMINANT REMEDIATION - An anthropogenic sorbent material modified for sequestering and/or attenuating multiple chemical and/or biological pollutant species, both organic and inorganic, in an aqueous environment is disclosed as well as a method of sequestering and/or attenuating multiple chemical and/or biological pollutant species, both organic and inorganic, in an aquatic ecosystem by capping at least a portion of a sedimentary basin of the aquatic ecosystem. | 11-21-2013 |
| 20140097137 | COUPLING BIOREACTOR AND METHOD FOR PURIFYING MALODOROUS GASES AND WASTEWATER - A coupling bioreactor in the form of a tower type seal structure filled with a suspended carrier. A water inlet pipe, an air inlet pipe, and a first microporous aerator are arranged at the bottom of the coupling reactor. The water inlet pipe is connected to a water distributor. The air inlet pipe is connected to the first microporous aerator. A gas inlet pipe and a second microporous aerator are arranged at the middle part of the coupling bioreactor and are connected with each other. An annular overflow weir is arranged at the upper part of the coupling bioreactor and is connected to a water outlet pipe. A gas outlet pipe is arranged at the top of the coupling bioreactor. The ratio of the height to the diameter of the coupling bioreactor is between 3 and 10. | 04-10-2014 |
| 20140144838 | BIO-AUGMENTATION COMPOSITION AND USE THEREOF FOR IMPROVING EFFICIENCY OF EFFLUENT TREATMENT IN HYDROCARBON PROCESSING PLANT - The present invention provides a bio-augmentation composition for improving the hydrocarbon degradation efficiency of effluent treatment plant for hydrocarbon degradation in wastewater generated from hydrocarbon processing industry and a method thereof. The composition comprises a synergistic combination of selective microorganisms to develop a consortium enabling effective degradation of hydrocarbons present in wastewater and converting thereof into harmless and environment friendly substances. The invention also provides for the said microorganisms and their isolations. | 05-29-2014 |
| 20140151296 | PRODUCED WATER TREATMENT TO REMOVE ORGANIC COMPOUNDS - Systems and methods for removing organic contaminants from water may be used, for example, to treat produced water from a steam assisted heavy oil recovery operation. The treated produced water may be re-used to create steam. Alternatively, the produced water may be a blowdown stream treated to facilitate further treatment in a thermal crystallizer. The treatments may include pH adjustment or separating de-solubilized organics or both. Other treatments may include one or more of oxidation, sorption and biological treatments. The treatments may be used alone or in various combinations. One exemplary combination includes reducing the pH of produced water, separating de-solubilized organics from the produced water, and oxidizing the produced water or contacting the produced water with activated carbon. | 06-05-2014 |
| 20140353248 | SHAPED ARTICLE MADE OF POROUS HYDROGEL, MANUFACTURING PROCESS THEREFOR AND USE THEREOF - There is provided a shaped article made of porous hydrogel that contains a polyvinyl alcohol acetalized with a dialdehyde, wherein the shaped article after freeze-drying has a pore size of 0.1 to 50 μm. Preferably, the shaped article made of porous hydrogel further contains a water-soluble polysaccharide. Also preferably, an acetalization degree of the polyvinyl alcohol is 1 to 50 mol %. Also preferably, the shaped article made of porous hydrogel is in the form of particles with a sphere-equivalent diameter of 1 to 20 mm. Such a shaped article made of porous hydrogel exhibits high strength and good survivability of microorganisms. | 12-04-2014 |
| 20150336826 | HYBRID WASTEWATER TREATMENT - A process for the biological treatment of wastewater in which the performance of a conventional activated sludge system is improved by adding an aerobic granular biomass system in a hybrid parallel process configuration. Waste biomass and suspended material from the aerobic granular biomass system is introduced into the conventional activated sludge system for this purpose. In the hybrid process configuration the advantages of both systems are combined to produce new advantages, while drawbacks of the individual systems are reduced to great extent. | 11-26-2015 |
| 20160158672 | BIOFILM FILTRATION DEVICE AND BACKWASH METHOD FOR BIOFILM FILTRATION DEVICE - A non-chemical-feed biofilm filtration method is elucidated, and a biofilm filtration device that can achieve a desired filtration water quality level by controlling the backwash flow for a filter media is provided. The biofilm filtration device has a biofilm formed on the surface of a granular filter media filled into a filter vessel and cleans water to be filtered by passing the water in a filtration direction to a filter layer formed from the filter media. A backwashing mechanism is provided such that the flow velocity (V) for backwashing water passing through in a direction opposite to the filtration direction during backwashing of the filer media is set in a range having a lower limit which is a value (Vs) at which a prescribed backwashing effect can be obtained and an upper limit which is the value (Vm) when the backwashing expansion coefficient for the filter media is 0. | 06-09-2016 |
| 20170233274 | CONTAMINANT REMOVAL FROM WASTE WATER | 08-17-2017 |
| 210617000 | In bed form | 25 |
| 20080290025 | Combination Membrane/Biolytic Filtration - Described herein are methods and systems for combination membrane/biolytic filtration. In one embodiment a filtration system is operated under suction. The arrangement includes a feed tan ( | 11-27-2008 |
| 20090039017 | Packing for a Bioreactor - There is disclosed a packing for a bioreactor in a small sewage treatment works for the degradation of organic and/or inorganic pollutants in effluent water. Said packing comprises an enlarged surface, achieved by the use of a special paper. Said paper is folded and arranged in concentric rings around an active charcoal filter. The paper itself has a layered embodiment made from, for instance, a silicone, a cellulose and an aluminum layer. A microbial mixture is then introduced into the cellulose layer, in particular with a proportion of photo-synthetically acting and a proportion of light-emitting microorganisms, permitting a degradation of the organic/inorganic pollutants in the effluent water. | 02-12-2009 |
| 20090071900 | 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 which the bacteria can grow to sustain the biological reaction, which convert nitrates into nitrogen gas. The fixed film media can be a cross-flow media and can optionally include a web of textile material integrated within the fixed film media to enhance bacterial growth within the fixed film media or optionally the anoxic vertical serpentine configuration could be applied to an activated sludge operation. A nitrate recycle pump recycles about 75% of the effluent from the aerobic chamber back into the anoxic chamber to provide a nitrate source for the digestion of the BOD within the influent wastewater. | 03-19-2009 |
| 20090127190 | WATER TREATMENT PROCESS - A water treatment process comprising: (a) providing bioactive material in waste water, the bioactive material containing microorganisms capable of removing one or more impurities from the waste water, wherein at least 40% by volume of said bioactive material in said waste water is in granular form; and (b) passing a portion of the waste water through a membrane separator, whereby the membrane separator prevents the bioactive material from passing therethrough. | 05-21-2009 |
| 20090211970 | PROCESS AND REACTOR FOR ANAEROBIC WASTE WATER PURIFICATION - The invention is directed to a process for the anaerobic purification of waste water using a sludge bed system, which process comprises feeding waste water and recycle water to the lower part of an upflow reactor containing mainly granular biomass thus producing biogas in the treatment passing the resulting gas/liquid/solid mixture upward and separating the gas and solid from the liquid in a three phase separator and thereby generating an anaerobic effluent that is withdrawn from the top of the separator, the improvement comprising withdrawing the recycle water separately from the effluent, after the separation of the gas from the liquid, either from the three phase separator or from the top of the reactor outside the three phase separator, and to an upflow reactor suitable for this process. | 08-27-2009 |
| 20090230057 | TERTIARY SYSTEM AND PROCESS FOR TREATING A LIQUID EFFLUENT FROM AN ONSITE DOMESTIC SECONDARY TREATMENT UNIT - Described are a tertiary disinfection system and process for treating a liquid effluent from a domestic secondary treatment unit. The liquid effluent has pathogenic micro-organisms, remaining suspended solids and dissolved organic pollutants. The system has an inlet, a subterranean initial treatment zone filled with a filtering material for removing some suspended solids, dissolved organic pollutants and pathogenic micro-organisms. The initial treatment zone allows the liquid effluent to percolate downward. The system also has a subterranean polishing zone extending horizontally outward from the initial treatment zone, and filled with a filtering material having pore sizes allowing upward capillary dispersion of the liquid effluent. The system also has a subterranean aeration zone having an interface with the initial treatment zone and the polishing zone, to provide aeration enabling aerobic accommodation of microflora for disinfection of the effluent. | 09-17-2009 |
| 20100006500 | Saf System and Method Involving Specific Treatments at Respective Stages - A wastewater treatment system comprising one apparatus ( | 01-14-2010 |
| 20100276364 | WASTEWATER TREATMENT SYSTEM AND METHOD - An aerobic treatment unit is disclosed. The unit provides a tank with an influent end and an effluent end. A growth media is between the influent and effluent ends. An aeration chamber with a diffuser plate is disposed near the influent end. At least one pump moves surface liquids from the near the effluent end to the aeration chamber, where the fluids are aerated by the diffuser plate, back to an area in the tank near the influent end. | 11-04-2010 |
| 20110017663 | SYSTEM AND METHOD FOR SIMULTANEOUS BIOLOGICALLY MEDIATED REMOVAL OF CONTAMINANTS FROM CONTAMINATED WATER - A system and method for simultaneous biologically mediated removal of contaminants (including at least arsenic or nitrate) from water are disclosed herein. The system includes i) a bioreactor having a length suitable for housing at least three different microbial populations, or ii) two bioreactors coupled together, the two bioreactors each having a length and an empty bed contact time that together are suitable for housing at least three different microbial populations. The system also includes a biofilm attachment medium positioned in i) the bioreactor, or ii) the two bioreactors; and the at least three different microbial populations formed on the biofilm attachment medium. The microbial populations are selected from oxygen reducing microbes, nitrate reducing microbes, arsenate reducing microbes, sulfate reducing microbes, and uranium reducing microbes. | 01-27-2011 |
| 20110024352 | Water Treatment Process for the Reduction of THM & HAA Formation - Disclosed herein are systems and process integrating the chemical-free oxidation of a photocatalytic decontamination process with a biological decontamination system to eliminate the THM and HAA precursors in drinking water. In one embodiment, a system may comprise a source providing fluid media contaminated with toxic natural organic matter, and a photocatalytic decontamination subsystem configured to oxidize the toxic natural organic matter via a photocatalytic process into non-toxic natural organic matter having a molecular weight low enough for biodegrading said non-toxic matter. The system may include a biological decontamination subsystem configured to immediately receive the contaminated fluid output from the photocatalytic decontamination subsystem, and employing a biological agent to biologically degrade the low-molecular weight non-toxic natural organic matter in the contaminated fluid to a concentration sufficient to prevent the formation of trihalomethanes or haloacetic acids. Also, such a system may include a disinfectant sub-system configured to disinfect the fluid output from the biological decontamination subsystem. | 02-03-2011 |
| 20110127215 | Method and apparatus for the bio-remediation of aqueous waste compositions - Numerous different types of waste compositions generally in an aqueous environment are bio-remediated under aerobic conditions utilizing highly diverse and multiple microorganisms within a reactor. The process is carried out with the microorganisms attached or bound by a variety of different surface characteristics to packing substrates, located within the reactor, having high surface areas and high porosity in the form of small micropores. Multiple different types of substrates are utilized that include minerals, carbon compounds, polymers and plastics, ceramics, metals, and the like and shapes thereof are utilized that efficiently dissolve air into the water. The reactors desirably have multiple bio-remediation stages therein. The reactor also contains at least one perforated chimney through which air can flow and optimize dissolving oxygen into the aqueous environment of the various bio-remediation stages. The reactors house maximum biodiversity to bio-remediate waste compositions in various wastewaters encountered from industrial, commercial, municipal and residential sources. | 06-02-2011 |
| 20110278220 | COILED CONTINUOUS FLOW WATER TREATMENT APPARATUS AND METHOD - The present invention is a wastewater treatment system utilizing a recirculating filter system comprising sand, gravel, or synthetic media. Septic effluent is continuously, or approximately continuously, dosed under pressure to the treatment media through pressure compensating drip irrigation emitters. The system comprises a commonly known septic tank and recirculation tank. Septic tank effluent is collected in the recirculation tank, from which it is continually dosed by means of a pump to the top of the treatment media of the recirculating filter through pressure compensating drip emitters. Continuous dosing of diluted residential septic tank effluent through drip irrigation emitters provides a slow consistent application of liquid rich in organic material and pathogens over the treatment media. The treated effluent is then recirculated if water is low or went to final disposal. | 11-17-2011 |
| 20120261336 | GROUND WATER PURIFICATION PLANT BASED ON BIOLOGICAL OXIDATION AND REDUCTION PROCESSED - The present invention relates to an artificial aquifer for decreasing the contents of metals, metalloids, nitrate, nitrite, pesticides and organic micro contaminants in natural ground water or artificial infiltrated groundwater from surface water. The system comprising a basin of filling material creating a reaction zone, a feeding line, one or more satellite wells, at least one main well and a pumping well, whereby the feeding line is applied in the upper outer periphery of the basin and wherein the main well is connected to a pumping well via a bottom outflow provided with a regulating valve to maintain a given level of water in the aquifer. The invention further relates to a method for purifying water. | 10-18-2012 |
| 20130313190 | CHEMICAL FREE AND ENERGY EFFICIENT DESALINATION SYSTEM - A desalination system ( | 11-28-2013 |
| 20140197099 | Wastewater Treatment Bed, Facility and Method - A facility and a method for treating high strength wastewater include a plurality of beds having layers of granular and textile material through which the wastewater flows for reduction of BOD and COD. The wastewater is conducted to and from the beds using piping networks. Distribution conduits and drain conduits are arranged within the bed. Wastewater flow is controlled by valves remotely actuated via a control system. | 07-17-2014 |
| 20150041393 | METHOD AND APPARATUS FOR TREATMENT OF WASTEWATER - Introducing a high surface area media into a sewage treatment process to improve and increase capacity of a given process. The high surface area media can be dispersed at strategic locations in a new or existing attached growth wastewater treatment plant so as to provide additional sites for biological growth and improved wastewater renovation. | 02-12-2015 |
| 20150136694 | POINT OF GENERATION SMALL VOLUME BIOREACTOR FOR HORMONE AND ENDOCRINE DISRUPTING CHEMICAL REMEDIATION - Water treatment and remediation processes for hormones and/or endocrine disrupting chemicals are disclosed. A bioreactor apparatus is provided having hormone degrading microbes suitable for forming a biofilm for such remediation processes wherein the water containing the hormones and/or endocrine disrupting chemicals provide a substrate for the biofilm. Methods of regenerating the bioreactors and filters for water treatment are disclosed. Additional applications of use for the water treatment and remediation include, for example, agricultural applications and consumer applications. Methods of employing the bioreactors and filters, methods of regenerating the bioreactor, kits, and assays for specific hormones and/or endocrine disrupting chemicals are also disclosed. | 05-21-2015 |
| 20160023931 | WASTEWATER TREATMENT METHOD - The invention relates to a wastewater treatment method including: filling a container of a treatment device with a biocompatible bed of electrically conductive inert material; supplying a flow of wastewater, which flows into the container filled with the conductive biocompatible bed; and leaving the wastewater inside the container for a sufficient amount of time so that the electrons that are produced in the oxidation reactions of material transported by the wastewater are transferred to molecules also transported in the same wastewater through the conductive biocompatible bed. | 01-28-2016 |
| 20160039694 | Iron-Containing Bioreactor & Method for Treating Reducible Compound Residues - An iron containing bioreactor for treating explosive compounds and other organics in contaminated surface water is disclosed. The bioreactor can be located either on-ground or in-ground at a location across which contaminated surface water flows. In one configuration the reactor is made up of (i) indigenous microbes, (ii) acetate, (iii) a low density iron-containing bed, and contains anaerobic zones in at least one portion of the flowpath. The reactor reduces the concentration of explosive compounds to below 10 ppb and also maintains this explosive compound reduction level for a period of at least one year without replenishing the microbes or iron. | 02-11-2016 |
| 20160251233 | MECHANICAL-BIOLOGICAL FILTER | 09-01-2016 |
| 210618000 | And rehabilitating or regenerating same | 5 |
| 20090078648 | Method for purifying effluent in an anaerobic reactor - The invention relates to a method for purifying effluents in an anaerobic reactor ( | 03-26-2009 |
| 20090294356 | BACKWASHING UNSATURATED WASTEWATER FILTER - A compact high efficiency combined biological and physical unsaturated wastewater treatment filter configured for periodic backwashing is disclosed. The filter utilizes packed media and removes pollutants and pathogens from wastewater and other dirty water sources. The filter comprises a periodic backwashing means to less the chance that biofilm growth will clog the media pores. However, such backwashing still leaves sufficient biofilm attached to the media to maintain a very high level of treatment. In the preferred embodiment, the filter utilizes high frequency dosing to cause pore saturation at or near the surface during dosing and shortly thereafter in order to maximize distribution uniformity and to induce downward airflow into the media. The system provides a number of unexpected benefits; including allowing a very low distribution pressure and providing high oxygen transfer at low energy utilization into the filter media for aerobic biodegradation of pollutants. | 12-03-2009 |
| 20110079555 | Aquarium Filter - An aquarium filtration and drainage system comprising an undergravel filter with a compartment containing biomedia which is positioned over a drain at the bottom of the aquarium. | 04-07-2011 |
| 20120193287 | Packed bed bioreactor for biofouling control of reverse osmosis and nanofiltration membranes - An installation and a method for removing dissolved biodegradable compounds as a biological treatment step up-stream of an equipment to be protected from biofouling being part of a ground water, surface water or tertiary wastewater treatment line, wherein said upstream biological treatment step is carried out in at least one packed bed bioreactor comprising a vessel or a tank filled with packing elements, characterized in that: iv) said packing elements of said packed bed show a void fraction of at least 70% and the flow velocity of water through said packed bed bioreactor is at least 20 m/h, so that said packed bed does not have a removal efficiency of suspended solids in water, if any, of more than 30%; v) said packing elements of said packed bed show a specific surface area of at least 750 m2/m3; vi) said process does not require the use of any biocide or biostatic compound. | 08-02-2012 |
| 20140083941 | Biological Waste Water Purification Reactor and Method - A biological reactor for treating wastewater. The reactor includes a gas injection system and a system for directing wastewater into the reactor. Further, the reactor includes a biological filter comprised of a packed bed of biofilm carriers and a volume of moveable biofilm carriers. During the method of treating the wastewater, the wastewater moves upwardly through the reactor and through the biological filter while gas is emitted from the gas injection system. | 03-27-2014 |
