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| Number | Title | Issue Date |
| 7344647 | Process for treating waste water to remove contaminants Recycled waste water is treated to remove contaminants and produce a sludge cake with a high percentage of solids and to produce a treated recycled waste water that can be discharged into a municipal sewer system. ... | 03/18/2008 |
| 7229952 | Additive packages for removing oil from solid materials recovered from a well bore An additive package for removing oil from solid material recovered from a well bore, e.g., drill cuttings and produced sand, is provided. The additive package includes an aqueous acidic solution containing a polymer substituted with an amino group, a halogenating ag... | 06/12/2007 |
| 7198722 | Process for pre-treating and desalinating sea water Water containing dissolved salts, such as calcium sulfate, calcium chloride, magnesium sulfate, magnesium chloride, sodium carbonate, sodium chloride, sodium sulfate, calcium bicarbonate, and mixtures thereof, is treated to reduce the concentration of those salts. A... | 04/03/2007 |
| 7192527 | Processes for removing oil from solid wellbore materials and produced water Processes for removing oil from a solid wellbore material such as drill cuttings or water such as produced by a subterranean formation include contacting the solid material/water with an amino-substituted polymer such as chitosan and a halogenating agent. The oil se... | 03/20/2007 |
| 7063793 | Apparatus and method for removing mercury and mercuric compounds from dental effluents The present invention is directed to processes for removing a contaminant from dental effluents and includes transporting a three-phase effluent through a suction line into a particle collection vessel, introducing a suction line cleaning solution which includes a r... | 06/20/2006 |
| 7018959 | Water-based metal working fluid A water-based, recyclable metalworking fluid comprises a polyalkylene glycol, an alkanolamine, a polyglycol surfactant, a polyol surfactant, a biocide and a corrosion inhibitor. The biocide may comprise a mixture of biocidal compounds effective against bacterial and... | 03/28/2006 |
| 7011752 | Wastewater separator and method of using same A wastewater separator to separate waste from a mixed wastewater stream including one or more of heavy waste, light waste and water. The wastewater separator comprises a separation container, a inlet and an outlet. The separation container comprises (1) a wastewater... | 03/14/2006 |
| 7005077 | Shipboard human waste treatment for removing solids A method and system for separating human waste solids from liquid for a shipboard toilet system that allows for the separation of solid waste, compaction of the solid waste and storage of solid waste. Wastes are deposited into a shipboard toilet system that uses vac... | 02/28/2006 |
| 6955763 | Dual-cell mechanical flotation system It has been discovered that a mechanical flotation system having only two cells can be nearly as efficient as one having more cells, yet provide an apparatus with a considerably smaller footprint, significantly reduced capital and operating costs, as well as be resi... | 10/18/2005 |
| 6811705 | Wastewater treatment system A wastewater treatment system for use on marine vessels or land-based applications treats wastewater by solids separation and oxidation. The system includes a solids separation tank, an oxidation tank having a plurality of chambers and a fluid circuit for re-circula... | 11/02/2004 |
| 6773603 | Chemical removal and suspended solids separation pre-treatment system A pre-filtration apparatus and system using dissolved oxygen ozone-treated water processed through an oxygen saturator having a flow distributor for even distribution of the water. Fully saturating the water with excess oxygen and injecting this high-pressure mixtur... | 08/10/2004 |
| 6344147 | Flotation plant A flotation plant comprises air supply means with which air bubbles can be supplied to a basin to which untreated water is supplied so as to cause flakes suspended in the untreated water to float by aid of the air bubbles; the air supply means includes st... | 02/05/2002 |
| 6312560 | Use of alkyleneamines for enhancing lime mud dewatering A process for dewatering lime mud in a kraft pulping process is described. The process includes an improvement which comprises adding an effective amount of an alkyleneamine to the lime mud prior to filtration. The preferred alkyleneamine is ethyleneamine... | 11/06/2001 |
| 5422011 | Method for recuperating crude oil from spills A method for recuperating crude oil from the body of a spill. First, the body of the spill is sprayed at low pressure then the same operation is done at a relatively higher pressure of at least 100 p.s.i. After the dispersant is allowed to penetrate the b... | 06/06/1995 |
| 5407584 | Water clarification method A method for clarifying a contaminated fluid in a main separator vessel having therein a cyclonic flow chamber. A spiral preliminary spinner introduces the contaminated fluid to be separated in a stratified condition into the cyclonic flow chamber by a ta... | 04/18/1995 |
| 5341938 | Method of separating materials in a flotation reactor A method of separating desired material from undesired material is provided. The method is performed by forming a slurry of material and introducing it into a specially designed flotation reactor chamber. A foam is generated and introduced into the reacto... | 08/30/1994 |
| 5310485 | Process for dissolved gas flotation in anaerobic wastewater treatment A process for gas entrainment of wastewater in an anaerobic wastewater treatment system includes the steps of withdrawing wastewater from an anaerobic digester and piping it into a flotation container. Thereafter the wastewater is pumped into a free stand... | 05/10/1994 |
| 5180499 | Process for removal of solid, chemical and bacterial waste from water The present invention relates to a two stage, multi-phase process for the rapid and economical purification of waste water which may contain solid wastes, and which does contain chemical and bacterial wastes wherein the waste water is first intimately int... | 01/19/1993 |
| 5160438 | Method and means of sampling large regions of liquid for pollution or biological activity using bubbles A unique bubble production system and method for sampling and cleaning la regions of "dirty" or polluted bodies of water, or for otherwise sampling them for other biological activity. This is achieved by the use of millions to trillions of tiny chemical ... | 11/03/1992 |
| 5133882 | Barge mounted oil recovery and recycle system This invention consists of a method of operation of a Self-Propelled Barge that is capable of supporting six integrated process systems for the continuous recovery of surface and sub-surface Oil or Oil Products spilled into Fresh, Brackish or Sea Water. T... | 07/28/1992 |
| 4925575 | System for separating phases of a liquid stream A system for separating phases of a liquid stream, comprising a plurality of members each member having an inlet and an outlet such that the outlet of one member is connected to the inlet of another with members being horizontally or vertically stacked in... | 05/15/1990 |
| 4900452 | Separation process for a liquid phase dispersed in a continuous liquid phase A process and apparatus for separating a liquid phase dispersed in a heavier continuous liquid phase, such as a hydrocarbon dispersion in an aqueous phase, of the floatation type, wherein gas bubbles are generated in the continuous phase to assure ascendi... | 02/13/1990 |
| 4889638 | Agitation and/or gas separation and dispersed gas flotation A method of, and apparatus for, separating phases in a polyphase system is described and particularly in separating oil from produced water by the contact of gas bubbles and oil droplets by a dispersed gas flotation technique. A polyphase system is divide... | 12/26/1989 |
| 4872997 | Coolant recycling system and method In the improved system and method of the present invention, a batch of contaminated oil is deposited into a tank, with the oil preferably being passed through a filter during the depositing step to assist in removal of solids. Once the contaminated coolan... | 10/10/1989 |
| 4869829 | Process for separating solids with a keratin filter aid A water clarification process wherein solids are separated by filtration through a porous septum utilizes as a filter precoat a coating of keratin-composition in the form of particles wherein at least 75 weight percent of the particles have a particle siz... | 09/26/1989 |
| 4795557 | Apparatus for gas transfer and flotation for treating water to be purified Apparatus for treating water by gaseous diffusion and flotation comprising a single reactor which is separated into at least two compartments. One compartment is used for gas transfer with a pressurized gas diffuser flushed by a liquid current wherein wat... | 01/03/1989 |
| 4790944 | Process and apparatus for the separation of foreign matter from a liquid by flotation A process for the separation of foreign matter from a liquid, which process comprises mixing a stream of contaminated liquid containing dissolved gas with a stream of induced gas to provide a multi-phase flow, subjecting the multi-phase flow to turbulence... | 12/13/1988 |
| 4783268 | Microbubble flotation process for the separation of bitumen from an oil sands slurry An improvement is provided to the known hot water process for extracting bitumen from mined oil sand. More particularly, a methodology is provided for the production of microbubbles of air, and it has been found that the so-produced microbubbles can be us... | 11/08/1988 |
| 4765965 | Mixer charger reaction control system and method of affecting a chemical reaction Apparatus and method for effecting a chemical reaction, including a mixer/charger for simultaneously mixing and electrically charging a fluid input to produce a charged fluid output, chemical reaction containment vessel for containing ingredients undergoi... | 08/23/1988 |
| 4752399 | Method of removing dissolved oil from produced water A process for removing dissolved and undissolved oil and chemical additives from waste and/or produced water streams involves contacting a first gas with the produced water stream, the first gas utilizing hydrogen bonding and dipole interactions with the ... | 06/21/1988 |
| 4627922 | Method of removing dissolved oil from produced water This invention involves a process and apparatus for removing dissolved and undissolved oil and chemical additives from waste and/or produced water streams. The process involves contacting a selected gas with the produced water stream, the selected gas uti... | 12/09/1986 |
| 4517282 | Process for developing or peeling alkali-type photosensitive film and apparatus used therein A developing or peeling solution for developing or imagewisely peeling an alkali-type photosensitive film containing a suspension of released photosensitive film is regenerated by introducing one or more reagents and a gas for depositing the suspension in... | 05/14/1985 |
| 4492636 | Process for cleaning metal working fluids for re-use Disclosed is a process for removing foreign matter and tramp oil from a continuously recirculating metal working fluid. The process includes the use of saturated dissolved air flotation which, contrary to prior belief, is able to effectively remove the fo... | 01/08/1985 |
| 4482460 | Process for removing carbon black from aqueous suspensions The invention relates to a process for removing carbon black from an aqueous suspension obtained by washing a gas containing carbon black with water. To this end, a gas stream comprising hydrocarbons and at least one inert gas is introduced into a suspens... | 11/13/1984 |
| 4409908 | Method for thermal decontamination of waste waters The method according to the present invention ensures a thermal decontamination of waste waters. The method comprises passing a combustible gas through said waste waters in the presence of surfactants. Said combustible gas is passed in an amount sufficien... | 10/18/1983 |
| 4354941 | Process for continuous separation of polluting matter from a carrier fluid A contaminated carrier liquid in a chamber is cleaned by adding thereto oil particles having a charge and a composition that induces the formation of an hydroxide floc to form an intermediate filtering layer in the chamber. A top clean oil layer is recove... | 10/19/1982 |
| 4347126 | Apparatus and method for flotation separation utilizing a spray nozzle An improved method and apparatus for froth flotation separation of the components of a slurry, having particular utility for the beneficiation of coal by the flotation separation of coal particles from impurities associated therewith such as ash and sulfu... | 08/31/1982 |
| 4280886 | Method for treatment of sewage The present invention relates to a method for removing suspended matter, organic matter, foaming matter and nitrogen compounds in sewage and to an apparatus for the method. The suspended matter and the organic matter are removed by means of first fine bub... | 07/28/1981 |
| 4216085 | Flotation method and apparatus Aerated liquid injected into contaminated wastewater provides minute bubbles which ascend slowly and become attached to contaminants to buoy them to the liquid surface. To produce an intimate mix of the aerated liquid and wastewater, the aerated liquid is... | 08/05/1980 |
| 4214987 | Two stage wastewater flotation In a first stage, a flow of wastewater is adjusted to near zero streaming potential by injecting a mineral acid into the wastewater. The thus adjusted flow enters a basin where it is subjected to a decreasing gradient of small bubbles to form and separate... | 07/29/1980 |
