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| Number | Title | Issue Date |
| 6177007 | High efficiency apparatus for treating nitrogen and phosphorous contained in sewage Disclosed herein is a high efficiency apparatus for treating nitrogen and phosphorous in sewage. The apparatus includes a sludge denitrification tank supplying sludge to an anaerobic tank.... | 01/23/2001 |
| 6177012 | Enzyme-producing strain of bacillus bacteria This invention presents a newly discovered, novel strain of Bacillus bacteria that produces lipase enzymes for the degradation of oleaginous materials such as fats, greases and cooking oils, protease enzymes to degrade proteins and amylases to break down ... | 01/23/2001 |
| 6165356 | In situ microbial filter used for bioremediation An improved method for in situ microbial filter bioremediation having increasingly operational longevity of an in situ microbial filter emplaced into an aquifer. A method for generating a microbial filter of sufficient catalytic density and thickness, whi... | 12/26/2000 |
| 6163932 | Process, using ammonia rich water for the selection and enrichment of nitrifying micro-organisms for nitrification of wastewater The present invention comprises a method for biological oxidation of nitrogen in water, e.g., wastewater, nitrification, by using ammonia-rich water for the selection and enrichment of nitrifying micro-organisms in a separate aerated reaction volume, wher... | 12/26/2000 |
| 6165371 | Off-shore sewage treating and handling apparatus and method Apparatus and method for accommodating and handling excess deliveries of combined sewage overflows to a sewage treatment plant supported and contained within an offshore moored vessel or platform, by diverting the excess deliveries to ballast tanks for te... | 12/26/2000 |
| 6139743 | Wastewater treatment apparatus for removing nitrogen and phosphorus and method therefor A wastewater treatment apparatus for removing nitrogen and phosphorus contained in wastewater, and a method therefor. The wastewater treatment apparatus includes an anaerobic/anoxic reaction tank having multiple compartments partitioned by a plurality of ... | 10/31/2000 |
| 6126816 | Wastewater treatment device A wastewater treatment device is provided, comprising a first chamber having an influent line for delivering untreated wastewater into the first chamber, wherein the first chamber further includes a first plurality of vertically staggered contact screens ... | 10/03/2000 |
| 6120687 | Integrated vertical wastewater treatment vessel and method with aeration zone and two secondary clarifiers A vessel (10) for placement on a land site for treatment of wastewater, in which an inlet (22) communicates wastewater, grit, and suspended solids into a grit collecting chamber (24) for settling grit particulates therefrom. An aeration zone (34) receives... | 09/19/2000 |
| 6117323 | Process for the biological treatment of wastewater with periods of biomass starvation A biological treatment of wastewater from intermittent and/or sporadic sources is described. The process includes the step of: maintaining treated wastewater effluent and biomass in a quiescent state without stirring, aeration or agitation during biomass ... | 09/12/2000 |
| 6117324 | System and process for treating animal waste The present invention is generally directed to a process and system for treating animal waste. More particularly, the present invention is directed to a process and system for treating animal waste effluent with ozone to decompose the organic material wit... | 09/12/2000 |
| 6117343 | Filler-packing apparatus, filler-packing method, and filler-packed column assembly A filler-packing apparatus comprises a bundled filler-receiving space assembly, a movable bottom stopper assembly having bottom stoppers which are insertable into bottom openings of the filler-receiving spaces of said assembly, and top stoppers which are ... | 09/12/2000 |
| 6113789 | Pasteurization process An anaerobic process for digesting organic waste solids to produce residual solids having low levels of pathogens so as to meet regulatory Class A requirements involves a pasteurization step to reduce pathogen levels and digestion of the pasteurized mater... | 09/05/2000 |
| 6106729 | Aeration assembly for dam sites An apparatus for aerating water contained at a dam site includes a force main pipe for receiving water from a dam site water reservoir therethrough and a dam aeration assembly in communication with the force main pipe. The dam aeration assembly, via an ar... | 08/22/2000 |
| 6106718 | Enhanced denitrification process by monitoring and controlling carbonaceous nutrient addition A method of determining denitrification time for at least a portion of wastewater in a wastewater treatment process including isolating a wastewater sample from the wastewater in the wastewater treatment process; detecting changes in fluorescence emitted ... | 08/22/2000 |
| 6106719 | Process for treating liquid waste using light under anaerobic conditions A process of treating a liquid waste containing organic matters, which includes contacting, in a digestion zone maintained in anaerobic conditions, the liquid waste with bacterial granules of (a) acid fermentation bacteria and/or methane-producing bacteri... | 08/22/2000 |
| 6103109 | Wastewater treatment system A wastewater treatment system which comprises a tank having defined therein an aerobic treatment zone and a suspended micromedia zone. One embodiment further includes an anaerobic treatment zone. The suspended micromedia zone includes a separating media. ... | 08/15/2000 |
| 6099722 | Aerobic wastewater treatment system for small flows A self-contained wastewater treatment system is provided, comprising a vessel having a bottom, side walls and a lid defining a hollow interior for containing wastewater, the vessel being adapted for installation underground; an influent line; an effluent ... | 08/08/2000 |
| 6096215 | Liquid bio-nutrients for use in biological wastewater treatment processes and method for using them A composition for treating nutrient deficient wastewater from a paper-making process, which eliminates the use of conventional treatments and efficiently provides essential nutrients for biologically degrading organic pollutants, comprising urea and phosp... | 08/01/2000 |
| 6096214 | Process for applying alternating anaerobic contact processing for the treatment of wastewater An alternating anaerobic contact system for treating wastewater through an apparatus including one enclosed vessel partitioned into two or more enclosed chambers wherein each chamber is flow connected to other chambers by conduits or an apparatus includin... | 08/01/2000 |
| 6093323 | Method for separating a mixture of residual wastes A process for the separation of a mixture of waste. In order to improve such a process, the mixture is treated biologically, namely composted and/or stabilized under forced ventilation. The components of the mixture are subsequently separated into a combu... | 07/25/2000 |
| 6093321 | Process for removing nitrogenous compounds and remineralizing water Process for removing nitrogenous compounds, in particular nitrates, and for remineralizing water with a low mineral content, characterized in that the removal of the nitrogenous compounds and at least partial remineralization of the untreated water are ca... | 07/25/2000 |
| 6090287 | Laboratory method used for bioremediation An improved method for in situ microbial filter bioremediation having increasingly operational longevity of an in situ microbial filter emplaced into an aquifer. A method for generating a microbial filter of sufficient catalytic density and thickness, whi... | 07/18/2000 |
| 6083395 | Method of treating a waste water containing organic solids A method of continuously treating an organic waste water which simplifies the overall process, avoids lengthy solubilizing reactions to reduce the volume of a solubilizing vessel, and effectively performs the solubilizing treatment is disclosed. In the me... | 07/04/2000 |
| 6083385 | Cleansing system A cleansing system for removing pollutants from a liquid waste by being pumped from a source to a blend recycle tank. The blend recycle tank supplies liquid waste to a first receiving reactor tank through an overflow pipe. A circulating flow is establishe... | 07/04/2000 |
| 6077430 | Method for eliminating phosphorous contained in effluents This method measures the soluble phosphorus concentration in the treated water for at least two different places of the treatment line: at the intake of the secondary clarification step to obtain a measurement P1 and at the outlet of the treatment line to... | 06/20/2000 |
| 6077446 | Sand filtration filtering system using ozone A device for filtering and disinfecting a fluid, such as waste water, is provided. The device includes a housing having an interior and a fluid inlet conduit in flow communication with the interior of the housing. An ozone source is in flow communication ... | 06/20/2000 |
| 6077431 | Process for decomposition and removal of dioxins contained in sludge A process is disclosed which comprises the steps of: slurrying sludge to be treated; applying ultrasonic radiation to the slurry to decompose dioxins contained in the sludge in a reaction field developed by the application of the ultrasonic radiation and ... | 06/20/2000 |
| 6074558 | Biochemical treatment of bitumen froth tailings A process for the biological treatment of bitumen froth tailings produced from a tar sands treatment and bitumen froth extraction process is disclosed. In this process bitumen froth tailings, containing native hydrocarbon metabolizing microorganisms, are ... | 06/13/2000 |
| 6073779 | Sludge vacuum system A sludge vacuum trolley (14) propels a sludge vacuum manifold (12) along the bottom of a settling basin or tank along a track (16) attached to the bottom of the settling basin. The sludge vacuum trolley (14) incorporates two drive wheels (26,27) that sele... | 06/13/2000 |
| 6068774 | Biological control of agricultural waste odor The present invention provides compositions and methods for controlling fecal odor production that develops from agricultural waste which accumulates because of the scale of hog and chicken farming. The compositions for controlling odor in waste comprise ... | 05/30/2000 |
| 6068773 | Single-cell wastewater reclamation and reuse system A single-cell wastewater treatment and reuse system designed for wastewater flows of less than 1,500 gpd includes a wastewater treatment cell having a volume in the range of about 14 to about 42 times average daily discharge from a wastewater source, such... | 05/30/2000 |
| 6066256 | Biological solubilization process for converting contaminated sludge into enriched biosolids A continuous process for the biological solubilization of heavy metals from primary or other metal-laden sewage that utilizes indigenous sulphur oxidizing bacteria and elemental sulphur as the energy source, prevents nitrite formation and minimizes the re... | 05/23/2000 |
| 6066257 | Process for the removal and destruction of perchlorate and nitrate from aqueous streams A process for concentrating and destroying the perchlorate and nitrate anions present in ground water and drinking water sources is disclosed. In the process, the perchlorate and nitrate anions present in feed water are concentrated into a much smaller ef... | 05/23/2000 |
| 6063280 | Biodegradation of methanesulfonic acid A process is described for the acclimation and enrichment of an activated sludge culture for the degradation of high concentrations of methanesulfonic acid, so as to render it non-toxic to the aquatic environment.... | 05/16/2000 |
| 6063273 | Apparatus for the biological purification of waste water For the biological purification of waste water, use is made of a column containing a UASB reactor (1) at the bottom and an aerobic reactor (2) at the top. The two reactors (1; 2) are separated from one another by a partition (12) in which openings are pro... | 05/16/2000 |
| 6063268 | Containment of water treatment medium The treatment medium comprises 5 cm cubes of soft, open-cell foam. The container basket is made from plastic mesh, arranged as a cylinder, 80 cm diameter, 100 cm high. The blocks are packed semi-tightly into the basket. The dirty water to be treated is sp... | 05/16/2000 |
| 6059971 | Device and process for thickening and conveying waste water sludge The present invention relates to a device and a process for thickening and conveying waste water sludges, especially with a centrifuge. Here, the centrifuge has at least one lysis device for the breaking down of cells of organisms contained in the waste w... | 05/09/2000 |
| 6051137 | Sewage dewatering process and equipment A process of dewatering primary-treated sewage which includes mixing the sewage with a coagulant or flocculant aid, usually activated polymer. The sewage is then mixed and flocculated at conditions which involve extensive mixing turbulence of the sewage a... | 04/18/2000 |
| 6045695 | Biological treatment of spent caustics A process for the biological treatment of a spent caustic solution containing sulphides is disclosed, wherein the solution is introduced into an aerobic reactor containing sulphide-oxidising bacteria, and the sulphides are partly converted to elemental su... | 04/04/2000 |
| 6045709 | Methods for sludge collection Sludge collection and removal systems are disclosed. The present invention provides methods and apparatus that include piping system of headers and laterals selectively provided with flow from a central point so that sludge can be removed from areas where... | 04/04/2000 |
