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5656173 |
Method of removing dispersed oil from an oil in water emulsion employing aerated solutions within a coalescing media
A method of removing dispersed oil from an oil in water emulsion is accomplished by the steps of dissolving gas in water to form an aerated solution, introducing the emulsion and aerated solution...
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5637221 |
Wastewater treatment system and method
A wastewater treatment system and method for substantially reducing or eliminating total suspended solids (TSS), biological organic discharge or biochemical oxygen demand (BOD), and fats, oils and...
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5628905 |
Biological aquarium filter with means to keep the siphon tubes primed
A filtration apparatus for an aquarium comprising of mechanical, biological and chemical filter mechanisms for removing impurities from water and an intake tube/pre-filter arrangement for...
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5601719 |
Biological nutrient removal process for treatment of wastewater
An apparatus and method are provided that are useful in a process for treating organic wastewater for the removal of phosphorus and nitrogen compounds. The apparatus includes an anoxic zone, an...
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5585005 |
Method for effecting gas-liquid contact
Components, usually but not exclusively gaseous components, are removed in a liquid medium from gas streams and chemically converted into an insoluble phase or physically removed. Specifically,...
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5580463 |
Pressurized, sparged flotation column
A method for removing residual oil from oily water under pressure is provided. The method comprises flowing a liquid stream of an oily water downward through a vertically extended zone to remove...
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5571422 |
Method for removing impurities from a liquid
The present invention concerns a reactor for removing impurities from a liquid, in particular for de-inking, including a tank (1) within which the liquid to be purified together with a gas or air...
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5567319 |
High capacity single tank water clarification method
Raw feed water is continuously clarified at a large throughput rate in a single, shallow tank using a flotation process carried out simultaneously in multiple sectors of the tank. Raw water feeds...
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5558768 |
Process for removing chlorides from crude oil
A process is described for removing chlorides from crude oils, including heavy oils and bitumens. The process steps comprise (1) mixing a non-ionic surfactant with the crude oil, (2) bubbling a gas...
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5554297 |
Process of removing surfactant from uncured concrete by flotation
Aggregate is separated from sludge consisting of, what is called, "the residual raw concrete" remaining in a raw concrete mixing truck from which raw (uncured) concrete has been discharged, and...
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5545330 |
Water treatment system
A water treatment system and process separates contaminants from water by flotation, by forming a removable floating scum of impurities utilizing a bubbling process, by filtering out suspended...
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5540844 |
Dewatering system
Apparatus and method is described for dewatering sludge obtained from a flotation tank, which efficiently handles the sludge and avoids the need for adding polymers to reflock the sludge. The...
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5536418 |
Method for processing multiple, small batches of waste material
An improved method for processing multiple small batches of waste material from different collection sites is provided. The method uses an apparatus designed to process small batches of waste...
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5534158 |
Method for clean-up of soils or refuse materials contaminated with highly viscous coal or petroleum derived tars/oils
A process is provided for clean-up of soils contaminated with highly viscous coal tar and/or petroleum derived organics. This new invention is based on application of the modified Clean Soil...
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5531904 |
Gas sparging method for removing volatile contaminants from liquids
Apparatus for removing volatile contaminant compounds from a liquid by sparging a cleaning gas therethrough comprises a volatile contaminant extraction assembly including a hollow porous tube...
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5527475 |
Method for determining the parameters of a gas-liquid contact apparatus
The parameters of a gas-liquid contact apparatus for the removal of a component of a gas stream in which an impeller-apertured shroud combination is immersed in a liquid phase to which the gas...
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5525238 |
Apparatus and process for separating substances
An apparatus and a process for separating substances from an influent fluid by means of dissolved-gas flotation, in which a flotation tank has at least one fixed fluid inlet for the influent fluid...
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5522999 |
Water clarification method
A method for clarifying a contaminated fluid comprising a separator vessel having therein a pair of cyclonic flow chambers; preliminary spiral separators introduce the contaminated fluid to be...
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5520806 |
Apparatus for gas bubble flotation
An apparatus for gas bubble flotation comprises an angular flotation tank (1a, 1b), at least one liquid inlet (2a, 2b) for a liquid containing suspended matter and a liquid admixed with gas...
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5518632 |
Method of recovering polymerizable liquid resins from rinse water
A method for separating water soluble, polymerizable resin from rinse water containing such resin which comprises adjusting the specific gravity of the rinse water so that the resin floats on the...
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5516434 |
Single cell gas flotation separator with filter media
A simplified single cell apparatus and method for removal of suspended impurities in liquids using gas flotation and filtration is provided wherein the method and apparatus are preferably directed...
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5516433 |
Water purification plant and method for purifying water
A water purification plant and method for purifying liquid by flotation clarification, in which pollution particles, or impurities dissolved in the liquid and brought into a particle form by...
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5514267 |
Apparatus for dissolving a gas into and mixing the same with a liquid
An apparatus for mixing a gas with a liquid and for dissolving the gas in the liquid comprises a throttled section (12) formed in a fluid flow passage, a gas inlet (18) provided slightly downstream...
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5512133 |
Method for deinking recycled paper using a low flow elongated open top flotation vessel
A method for producing substantially ink-free pulp from recycle printed paper comprising first pulping the recycle paper in a hydrapulper with at least water and an agglomerating agent thereby...
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5510039 |
Method for separating off solid materials
The method serves for the separation of solid materials out of a suspension and is, as a rule, implemented as a floatation method. The suspension (S) to be clarified is added tangentially from the...
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5507954 |
Process for separating grease and solid materials from a waste material
A process for separating grease and solid materials from a waste material so as to produce an aqueous discharge liquid. Waste material containing grease, water and solid materials is passed into a...
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5492630 |
Method and apparatus for dissolved air flotation with aeration
A method and apparatus for aeration of waste water in a dissolved air flotation waste water treatment system includes a container for receiving and retaining waste water for settling of heavy...
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5484534 |
Energy conserving method of water treatment
An energy conserving method and apparatus for using induced gas flotation to separate finely dispersed oil and solids from water and doing so in such a manner as to minimize the power consumption,...
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5480558 |
Electric enhancement of adsorbent flotation separation
An adsorbent electrode assembly electrically enhances contaminant removal in soil washing processes. The adsorbent electrode assembly is immersed in the froth of a flotation cell and connected to...
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5462669 |
Method for dissolved air floatation and similar gas-liquid contacting operations
A method and apparatus for dissolved air floatation (DAF) and for gas-liquid contacting operations by dissolved air floatation. A number of involute flow channels in a container have inlets and...
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5458738 |
Clarifying suspended solids from liquid process streams
Liquid process streams--such as white water, pressate, or washer filtrate from a pulp and paper mill--are clarified in an efficient manner using a gas sparged hydrocyclone, which takes up a minimum...
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5454942 |
Apparatus for the removal of floating sludge in dissolved air floatation basins at water purification and waste water treatment plants
Improved skimmer apparatus for use in dissolved air floatation basins employed in water purification and waste water treatment plants is provided. The invention includes centrally positioned,...
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5417864 |
Decontamination of hydrocarbon containing substrates (LAW100)
Simply stated, in the process of the present invention a hydrocarbon contaminated substrate, such as a hydrocarbon contaminated soil, is separated preferably by wet-sieving, into a coarse fraction...
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5417806 |
Method of removing fine contaminants from used paper fibre material
A method of removing fine contaminants from waste paper fibrous material (S) is described with solution (1) and pre cleaning (2) whereupon the fibrous material is first subjected to a washing...
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5407646 |
Dual impeller method and apparatus for effecting chemical conversion
Hydrogen sulfide or other gaseous component is removed from a gas stream containing the same by distribution of the gas stream in the form of fine bubbles by a rotary impeller and stationary shroud...
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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...
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5389263 |
Gas anti-solvent recrystallization and application for the separation and subsequent processing of RDX and HMX
Disclosed is a process for recrystallizing materials that are ordinarily difficult-to-comminute. The process utilizes supercritical fluids and gasses at conditions near their respective vapor...
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5382358 |
Apparatus for dissolved air floatation and similar gas-liquid contacting operations
An apparatus for dissolved air floatation (DAF) and for gas-liquid contacting operations by dissolved air floatation. A number of involute flow channels in a container have inlets and outlets...
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5356533 |
Bubbling system
A system for cleaning water in rivers or lakes or for separating oil and water. The system includes a sucking pipe; vapor-liquid mixing device connecting to the sucking pipe; a pressure pump...
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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...
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5332100 |
Column flotation method
A method for the beneficiation of mineral ores by the flotation method whereby a slurry is introduced under pressure into the top of a first column through a downwardly facing nozzle, and air is...
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5330655 |
Method of regulating a flotation system with a primary and secondary stage
The invention is directed to a method of regulating a flotation system having an inflow quantity of suspension flow dependent on production demands, including a primary flotation stage and a...
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5330657 |
System and method for removing asbestos particles from a slurry
A system and method for removing asbestos and other hazardous solids from a slurry collected during removal of insulation from pipelines, equipment and other structures. The slurry is collected in...
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5310459 |
Apparatus and method for deinking waste paper pulp
An apparatus and method for de-inking waste paper pulp using a foam flotation process to recycle printed waste paper for the manufacture of new paper. Pulped printed paper is fed as a slurry to an...
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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...
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5298167 |
Method for separating immiscible liquid
An apparatus and a method are disclosed for separating a first fluid from a second fluid wherein the first fluid is lighter than the second fluid and the first fluid is immiscible with the second...
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5275732 |
Combined coarse and fine bubble separation system
A high rate multi-stage bubble separation process is developed for: (a) initially generating coarse gas bubbles with diameters greater than 80 microns in turbulent hydraulic condition to mix an...
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5273624 |
Pressurized flotation module and method for pressurized foam separation
A method and several embodiments of apparatus are disclosed for use in foam flotation separation. The method discloses performing the separation in a module operated at nonatmospheric pressure, and...
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5242580 |
Recovery of hydrocarbons from hydrocarbon contaminated sludge
A process is disclosed for the removal of hydrocarbons such as bitumen or heavy fuel oil from hydrocarbon contaminated sludge, or particulate solid material or the like non-homogenous material...
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5242600 |
Wastewater separation system
A wastewater flotation separation system is provided, which operates effectively with a minimum of maintenance. The apparatus includes a container (12) for holding wastewater, an inlet (14) located...
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