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| Number | Title | Issue Date |
| 7867398 | Method to reduce wastewater treatment plant footprints and costs A method and apparatus for reducing the footprint of chemical/mechanical/biological wastewater treatment facilities employing sulfur dioxide disinfection and chemical dewatering of solids in conjunction with an environmental biological systems for treating the separ... | 01/11/2011 |
| 7867397 | Method for purifying waste water with added oxidizing agent The invention concerns a method for purifying wastewater loaded with organic matter, said method including: a step of contacting wastewater with a biological culture containing a purifying biomass and a step of separating performed by filtration through organic or i... | 01/11/2011 |
| 7332084 | Process for biological treatment of organic wastewater and apparatus therefor A multistage activated sludge process involving a predation effect caused by microorganisms realizes further improvement in treatment efficiency and further decrease in the amount of excess sludge generated while a stable quality of the treated water is maintained. ... | 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 |
| 7311833 | Zero excess sludge membrane bioreactor An inclined plate coupled membrane bioreactor for treating feed water having excessive level of nutrients in particular chemical oxygen demand and total nitrogen and suspended solids has an aerobic bioreactor for nitrification and aerobic biodegradation in which mem... | 12/25/2007 |
| 7309432 | System and method for eliminating sludge via ozonation A system and method for the treatment and reduction of sludge via ozonation in a wastewater treatment process is disclosed. The sludge treatment system comprises: a sludge ozonation reactor coupled to an activated sludge treatment basin and adapted to receive a liqu... | 12/18/2007 |
| 7300575 | Portable filter system A filter system for receiving an aqueous-based fluid contaminated with particles and emulsified contaminant oil, removing the particles, and separating the emulsified contaminant oil from the aqueous-based fluid includes a filter media for receiving the aqueous-base... | 11/27/2007 |
| 7297275 | Biomembrane filtration apparatus and method The present invention has an object to provide a biomembrane filtration apparatus which can treat a nitrate nitrogen and nitrite nitrogen in an anaerobic state to stably remove them together with SS with efficiency and, simultaneously, can biologically remove the re... | 11/20/2007 |
| 7264747 | Coated microbubbles for treating an aquifer or soil formations A microporous diffuser includes a first elongated member including at least one sidewall having a plurality of microscopic openings. The sidewall defines an interior hollow portion of the member. The diffuser has a second elongated member having a second sidewall ha... | 09/04/2007 |
| 7244355 | Organic and animal waste effluent treatment An organic and animal waste treatment apparatus (1) comprising a container (10) with substantially torus shaped bio-film media (200) provided primarily by tires (72) formed in multiple layers. A layer proximal the bottom (20) is at... | 07/17/2007 |
| 7189365 | Liquid treating equipment including a storage vessel and a discharge vessel In a liquid treating equipment to maintain a small amount of liquid to a desired liquid level with constantly supplying an additional liquid into a small capacity vessel, a storage vessel 13 to store the small amount of liquid, an injection tube 16 to ... | 03/13/2007 |
| 7186340 | Perchlorate reduction and related water treatment methods Removal of oxidized contaminants from water. Perchlorate and other oxidized contaminants are reduced and removed from water with a method using a primary electron acceptor. ... | 03/06/2007 |
| 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 |
| 7048852 | Method and apparatus for treating water or wastewater to reduce organic and hardness contamination A method of treating liquid including mixing coagulant with the liquid, introducing mixed coagulant and liquid into a primary reaction zone, containing an agitator, of a reactor which is substantially concentrically positioned with respect to a secondary reaction zo... | 05/23/2006 |
| 7041260 | Integral compact heat exchanger and catalytic reactor for scavenging contaminants from air A fluid treatment system incorporating an integrated heat exchanger and thermal treatment unit. A fan draws or pushes a contaminated fluid through the heat exchanger, which is preferably of the counter flow type. The integrated heat exchanger and thermal treatment u... | 05/09/2006 |
| 7005069 | Apparatus and method for aeration of wastewater A wastewater treatment plant includes (i) an aeration vessel having a bottom portion, a top portion and a side portion disposed therebetween to hold a quantity of wastewater, the top portion and the bottom portion being disposed at least 20 feet apart from one and t... | 02/28/2006 |
| 6916421 | Vertical vortex or laminar flow interactive bio media water treatment device A waste liquid treatment system includes a plurality of flow control elements presenting a plurality of waste liquid flow control surfaces. A biofilm covers at least some of the waste liquid flow control surfaces. The flow control surfaces are adapted and constructe... | 07/12/2005 |
| 6764600 | Lagoon for hog waste and the method of treatment thereof The present invention relates to a lagoon partitioned for hog waste treatment, and the method of waste treatment in said lagoon. More particularly, the present invention relates to a lagoon for hog waste, which is partitioned into zones separated by walls, comprisin... | 07/20/2004 |
| 6730224 | Advanced aerobic thermophilic methods and systems for treating organic materials An improved method for the aerobic thermophilic treatment of organic material of the type in which air is passed through organic matter contained in a reactor, in which at least a portion of the air that has passed through the organic matter in the reactor being cap... | 05/04/2004 |
| 6500340 | Pasteurizing sludge to exceptional quality An anaerobic process in accordance with the present invention includes the step of digesting an organic substrate in a first anaerobic reactor to provide reactor contents comprising solids and liquid products of digestion. The process also includes a step... | 12/31/2002 |
| 6254776 | System and method for treating animal waste A system and method for treating farm animal waste, such as hog and poultry waste, to remove volatile organic compounds (VOCs) from wastewater treatment pits and thus control smell is disclosed. The farm animals are housed in structures equipped with grat... | 07/03/2001 |
| 6162359 | Method for recuperating vent gas coming from an ozonization reactor Process for recovering and reusing effluent gas from an ozonization reactor in a plant for treating effluent, especially sewage, which includes a biological reactor, a clarifier and an ozonization reactor. The effluent gas from the ozonization reactor is ... | 12/19/2000 |
| 5972219 | Process for aerobic treatment of waste water A process is described for the aerobic treatment of effluent in a reactor of the UASB type, into the bottom of which the effluent to be treated is fed and, at the same time, oxygen is fed in an amount such that the growth of a facultative and an aerobic b... | 10/26/1999 |
| 5635392 | Nutrient mixtures for the bioremediation of polluted soils and waters A nutrient concentrate for stimulation of growth for the accelerated cultivation and growth of hydrocarbon-consuming microorganisms as well as a process for their use in bioremediation is disclosed. The concentrate is an admixture of water-soluble and/or ... | 06/03/1997 |
| 5593590 | Process for separate treatment and disposal of mixtures of solid and liquid, organic wastes A starting mixture of liquid and solid organic wastes that is susceptible to at least partial microbiological degradation, with formation of biogas, is treated by the following process. The mixture is mechanically separated into a first sludge phase with ... | 01/14/1997 |
| 5587081 | Thermophilic aerobic waste treatment process A system for thermophilic aerobic destruction of pathogenic organisms and organic matter within waste water treatment sludge includes a tank for maintaining the sludge and an air transfer apparatus for injecting air into the sludge near the bottom thereof... | 12/24/1996 |
| 5552051 | Site remediation technology A biochemical process system and apparatus for removal of toxic volatile organic compounds (VOCs), volatile inorganic compounds (VICs), heavy metals, and surfactants from contaminated soil, liquid and gas streams, by means of combined washing, pH adjustme... | 09/03/1996 |
| 5451320 | Biological process for groundwater and wastewater treatment A physical-biochemical process system and apparatus for removal of toxic volatile organic compounds (VOCs) and other organics from contaminated groundwater or wastewater is described. This process system involves influent pumping groundwater or wastewater... | 09/19/1995 |
| 5415786 | Process for treating water with ozone Process for treating, especially waters to be made drinkable, with ozone in a reactor (2), especially with a bubble column, in which ozone is generated (in 1) in a gas enriched in oxygen containing at least 70% of oxygen by volume, to produce an ozonised ... | 05/16/1995 |
| 5399267 | Liquid treatment system with air emission control The present invention relates to an air emission control system for removing volatile organic compounds (VOCs) and other objectionable contaminants from an emitted gas stream which is generated from a water treatment means. Specifically the improved air e... | 03/21/1995 |
| 5298164 | Emission reduction of organic volatiles from aerobic biological reactors An aerobic treatment of waste water is accomplished in such a manner as to effectively reduce the emission of volatile organic compounds contained therein by first re-introducing oxygen containing gas previously used in the process as supplemented with ad... | 03/29/1994 |
| 5277814 | Process for treating organic wastes A method for aerobically treating water-containing organic wastes is provided. This process may be conducted in a closed reactor with suitable controls to prevent any adverse environmental impact, and involves mixing the wastes with an inert and non-friab... | 01/11/1994 |
| 5275742 | Treatment of water Oxygen is separated from air by pressure swing adsorption in plant 2. The oxygen is passed through an ozone generator 4. The resulting ozonated oxygen is passed upwardly through a contactor 6 countercurrently to the flow of a side stream of water to be tr... | 01/04/1994 |
| 5207912 | Process for treating oily sludge A method for aerobically treating a low solids water-containing oily sludge which comprises combining said sludge with a biologically inert, non-friable bulking agent characterized by having a substantial component with a density less than water to form a... | 05/04/1993 |
| 5075007 | Biological wastewater purification with a downstream precipitation stage Wastewater containing impurities refractory to secondary treatment is first introducted into an aerobic biological treatment stage operating with an oxygen-enriched stream and subsequently into a precipitation stage where the biologically treated wastewat... | 12/24/1991 |
| 4975194 | Process for the disinfection of sewage sludge The process for the disinfection of sewage sludge prior to introducing same into an anaerobic sewage sludge processing step involving the recovery of methane gas by heating the sewage sludge in a preceding disinfection step at from 50° C. to 70° C., and... | 12/04/1990 |
| 4834779 | Process for membrane seperation of gas mixtures A method for the substantial separation of at least one gas component from a gas mixture to generate a residue gas substantially depleted of the gas components to be separated. A semipermeable membrane is provided which has a feed gas side and a sweep gas... | 05/30/1989 |
| 4668388 | High rate sludge reactor A high rate reactor for the treatment of biosludge has been designed which combines the processes of landfarming, sand bed dewatering, and forced aeration composting. The reactor is essentially a sand bed overlying a drainage system housed in an inflatabl... | 05/26/1987 |
| 4505820 | Method for cleaning waste water Method for cleaning waste water, wherein the waste water (19) and oxygen gas (31) are flowing in opposite directions through a cylindrical multireactor (20) having a central rotatable pipe (24), the multireactor comprising a number of bioreactors and at l... | 03/19/1985 |
| 4501664 | Method and apparatus for treating organic wastewater A method and apparatus for achieving high quality treatment of organic waste water (both domestic and industrial types), which can also be used to treat organically contaminated water supplies or to reduce hazardous organic wastes (cyanides, PCBs, etc.) T... | 02/26/1985 |
