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| Number | Title | Issue Date |
| 7439054 | Bioreactor system for biological degradation of oily sludge A 10,000 gallon sequencing batch reactor tank for the on-site bio-degradation of oily sludge. Bacteria already present in and adapted to oily sludge degrade the hydrocarbons found in oily sludge within two weeks from 20,000 ppm to less than 100 ppm. A degradation cy... | 10/21/2008 |
| 7429328 | Apparatus and methods for control of waste treatment processes Waste-treatment processes are enhanced through generation and introduction of specific biological populations customized to perform or favor specific tasks either during the main process, for the formation or precipitation of certain biological nutrients, or to acco... | 09/30/2008 |
| 7332077 | Methods for biological treatment of waste waters In a vertical shaft bioreactor, improved devices and methods are provided for enhanced secondary and/or tertiary treatment of wastewater, including residential, municipal and industrial wastewater. The devices and methods of the invention are useful for enhanced sec... | 02/19/2008 |
| 7326344 | Process for the removal of metals by biosorption from mining or industrial effluents A method and a plant to remove metals by biosorption from mining or industrial effluents comprising: (a) subject the effluent to at least one first stage of pre-treatment, selecting among: precipitation by pH rising, solvent extraction or solvent extraction on emuls... | 02/05/2008 |
| 7318895 | Biodestruction of blended residual oxidants The present invention may be used for treatment of waste streams using domestic wastewater. A concentrate waste stream containing one or more of perchlorate, nitrate, bromate, selenate and chromate may be combined with a domestic wastewater stream. The concentrate w... | 01/15/2008 |
| 7314563 | Membrane coupled activated sludge method and apparatus operating anoxic/anaerobic process alternately for removal of nitrogen and phosphorous Disclosed are a membrane coupled activated sludge method and apparatus operating anoxic/anaerobic processes alternately for removal of nitrogen and phosporus, wherein nitrogen and phosphorous together with organics in the sewage, wastewater, filthy water etc. can be... | 01/01/2008 |
| 7309423 | Wastewater treatment and dispersal system A wastewater treatment and dispersal system wherein wastewater will stand until it has a BOD of less than about 125 mg/l. The dispersal field may comprise inner and outer conduits, an inner conduit and a permeable outer cover, or a trough and an enclosure. ... | 12/18/2007 |
| 7309435 | Biological process for waste treatment and energy production Processes for the treatment of organic waste are disclosed comprising digesting organic waste under anaerobic conditions so as to convert at least a portion of the organic waste and produce a clear decant and a mixture of biomass and unconverted organic compounds, r... | 12/18/2007 |
| 7309433 | Fluid bed expansion and fluidisation Method and apparatus (8) in which a biomass is carried on a substrate which is fluidised. The fluidised substrate has below it a lazer of distributor particles through which the fluidising medium passes prior to contact with the fluidised substrate and biomas... | 12/18/2007 |
| 7300577 | Wastewater treatment and dispersal system A wastewater treatment and dispersal system wherein wastewater will stand until it has a BOD of less than about 125 mg/l. The dispersal field may comprise inner and outer conduits, an inner conduit and a permeable outer cover, or a trough and an enclosure. ... | 11/27/2007 |
| 7284747 | Polygon shaped fluid diffuser A plurality of pipe diffuser sections are arranged in a three to seven sided polygon, which allows a fluid to flow through distribution piping and the pipe sections and diffuse, through openings in the walls of the pipe diffuser sections, into a body of fluid contai... | 10/23/2007 |
| 7264727 | Septic system remediation method and apparatus An apparatus and a method for the remediation of failing wastewater treatment systems, such systems being comprised of one or more septic tanks and a seepage pit, drywell, absorption field or an above grade mound system having an inlet and a plurality of outlets whe... | 09/04/2007 |
| 7258793 | Method and apparatus for treating organic liquid waste In a method and apparatus for treating an organic liquid waste with a biofilm, the organic liquid waste is dissolved with oxygen under a first pressure higher than an atmospheric pressure to prepare a pressurized oxygen-dissolved organic liquid waste. The pressurize... | 08/21/2007 |
| 7198716 | Phased activated sludge system The inventions describe a phased activated sludge treatment system that incorporates elements of batch treatment technology into a flow-through treatment process. Control of mixing and aeration systems are independent to facilitate the operation of the main reactor ... | 04/03/2007 |
| 7182859 | Apparatus for treating organic waste An apparatus for treating organic waste. The apparatus includes a tank having an interior chamber. A weir having a lower opening is disposed in the tank and this weir divides the tank into an inlet chamber and an outlet chamber. The inlet chamber receives organic wa... | 02/27/2007 |
| 7175764 | Method and device for purifying wastewaters The invention relates to a method for purifying wastewaters, particularly wastewaters produced in the paper industry, involving the following steps: a) aerobic clarification of the wastewater using activated sludge in an activation stage; b) carrying out, in a secon... | 02/13/2007 |
| 7169306 | Versatile pre-thickened aerobic digester system An aerobic digester system in a wastewater treatment plant is made more versatile for different conditions by addition of an equalizer basin or in some embodiments, a bypass pipe. If infeed is received from a sequential batch reactor or from a concentrated septage, ... | 01/30/2007 |
| 7163631 | Process for treating wastewater containing peracetic acid The present invention disclose a process for treating a wastewater from a foodstuff factory, wherein the pipelines are cleaned and the containers are sterilized by using a water containing peracetic acid as an disinfection agent. The process of the present invention... | 01/16/2007 |
| 7163632 | System and method for oxygenation for wastewater treatment A fluid treatment system and method for dissolving a gas into a fluid and subsequently allowing microbial or chemical reactions with the fluid mixture to decontaminate the fluid. The system comprises a pressurized gas transfer reactor, a depressurization device, a m... | 01/16/2007 |
| 7160458 | Method for purification of process water from a kerosene desulfurization plant Method for purification of process water, in particular coming from a kerosene desulfurization plant, and related plant, comprising the steps of neutralizing the process water, carrying out a washing of the process water by a solvent, and biologically treating the p... | 01/09/2007 |
| 7147776 | Method for treating an effluent in three biological steps The invention concerns a method for biological treatment of an effluent in order to purify it comprising treating said effluent in a first step which consists in an anaerobic biological treatment (13), with sulphate-reducing biomass fixed on a mobile support ... | 12/12/2006 |
| 7147780 | Process for reducing sludge derived from the treatment of wastewater by oxygenation and mechanical action A method for reducing the production of sludge derived from the treatment of wastewater. The sludge is subjected to a mechanical action in the presence of a gas containing oxygen. The mechanical action is performed in such a way as to destroy the cell walls of betwe... | 12/12/2006 |
| 7118669 | Wastewater treatment and dispersal system A wastewater treatment and dispersal system wherein wastewater will stand until it has a BOD of less than about 125 mg/l. The dispersal field may comprise inner and outer conduits, an inner conduit and a permeable outer cover, or a trough and an enclosure. ... | 10/10/2006 |
| 7105091 | Waste treatment with control over biological solids Waste-treatment processes are enhanced through generation and introduction of specific biological populations customized to perform or favor specific tasks either during the main process, or for solids minimization purposes in a post-treatment process. These bacteri... | 09/12/2006 |
| 7070693 | Process for treating septage A process and apparatus for the treatment of septage, particularly grease trap waste, is disclosed. The inventive process will convert the septage into Biosolids (sludge) and water dischargeable to the environment. The treated septage achieves pathogen reduction, an... | 07/04/2006 |
| 7060186 | Method and apparatus for the treatment of wastewater A batch process and apparatus for treating wastewater in a system employing anaerobic and aerobic zone reaction vessels under elevated pressure is disclosed in which an amount of processed activated sludge material is charged into an aerobic zone and wastewater to b... | 06/13/2006 |
| 7056438 | Flood and drain wastewater treatment system and associated methods The wastewater treatment system includes at least one fluidized bed reactor, such as a vessel containing media to which biofilms may attach. The vessel has an inlet and an outlet adjacent a bottom, and an overflow outlet adjacent a top, of the vessel. An element for... | 06/06/2006 |
| 7011757 | Process for recycling mixed liquor with dual-use jet recirculation pumps to provide highly efficient wastewater treatment A process that removes nitrogen by the MLE Process or nitrogen and phosphorus by the Bio-P Process from municipal or industrial wastewaters by combining at least one dual-use jet recirculation pump with jet manifolds disposed at the bottoms of deep tanks functioning... | 03/14/2006 |
| 6984325 | Water and aqueous mix treatment using venturi discharge oxygen The method of treatment of a body or bodies of liquid, that is essentially aqueous, and containing other components, the method including introducing O2 molecules into said liquid body or bodies to increase dispersed or dissolved oxygen content of the liq... | 01/10/2006 |
| 6969052 | Air aspirator-mixer A single port venturi device is provided for aeration of wastewaters containing suspended solids. The device has a non-obstructive design which prevents attachment or accumulation of suspended solids, and promotes even air distribution for efficient aspiration of ai... | 11/29/2005 |
| 6890429 | Systems and methods for treating waste water Systems and methods for treating waste water containing biological wastes such as animal waste generated in livestock-raising operations, wherein the waste water is subjected to a series of operations to separate solids from the liquid phase of the waste water and t... | 05/10/2005 |
| 6805806 | Method and apparatus for treatment of wastewater employing membrane bioreactors Methods and apparatus employing membrane filtration in biodegradation processes for treatment of wastewater are described. A bioreactor system is described having an equalization system, a membrane bioreactor system, and a controller. Aeration systems for a membrane... | 10/19/2004 |
| 6802975 | Method for biological effluent treatment The invention relates to a method of biological treatment of wastewater by means of activated sludge, wherein the wastewater is introduced first into an aerated activated sludge tank (B tank) and then by turns into one of several sedimentation and recirculation tank... | 10/12/2004 |
| 6787035 | Bioreactor for treating wastewater A bioreactor that has an internal sludge return function for treating wastewater is provided. Said bioreactor comprises a mixing zone (18), a static zone (28), and a mixed liquor circulation channel (26). The internal sludge return is accomplish... | 09/07/2004 |
| 6780318 | Method for recovering a disposal trench with a biomat slime, and method for operating a waste treatment vessel A soil-based disposal trench that has failed from a biomat slime is recovered by adding a facultative anaerobic bacteria to an effluent that flows into the disposal trench. The facultative anaerobic bacteria consumes the biomat slime and, in one embodiment, supplant... | 08/24/2004 |
| 6752926 | Method and apparatus for treatment of wastewater A closed bioreactor for high organic carbon removal and ammonia conversion in high-strength wastes under microgravity conditions. Oxygen is provided to the bioreactor by diffusion through a non-porous hydrophobic membrane in a recirculation line, allowing a high rat... | 06/22/2004 |
| 6692642 | Organic slurry treatment process A process is provided for full treatment of animal manure and other organic slurries containing suspended solids, and dissolved organic matter, nitrogen, and phosphorus, without the need for anaerobic digestion or anaerobic stabilization lagoons. The proc... | 02/17/2004 |
| 6461510 | High-efficiency processes for destruction of contaminants The present invention relates to novel ex situ processes for simple and economical destruction of air, water, and soil contaminants using naturally occurring microorganisms that are widely available in the environment. The processes utilize novel closed-l... | 10/08/2002 |
| 6413427 | Nitrogen reduction wastewater treatment system A compact nitrogen reduction wastewater treatment system for treating a waste liquid, the system comprising a single tank. The tank includes an inlet, an aerobic treatment compartment, an anoxic treatment compartment, a suspended micromedia compartment, a... | 07/02/2002 |
| 6406629 | Biological process for removing phosphorous involving a membrane filter A waste water treatment process for biologically removing phosphates incorporates a membrane filter. The process includes three zones, an anaerobic zone, an anoxic zone and an aerobic zone containing an anaerobic, anoxic and aerobic mixed liquor. Water to... | 06/18/2002 |
