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7445717 |
Process for treating waste from the production of energetics
A waste stream is treated in a pre-filter having media, preferably sand, connected below a zero-valent metal column reactor incorporating a metal with reducing potential, preferably elemental iron...
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7442311 |
Emulsion and effluent treatment processes
An emulsion and affluent process which treats and breaks very tight emulsions and separates dissolved solids from associated fluids produced in industry, whereby solids and fluids are separated...
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7413664 |
Selenium removal process
A process for removing selenium from an aqueous stream using a supported sulfur material, to convert selenocyanate to selenite, followed by removal of the selenite from the aqueous stream.
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7404902 |
Method for treating water
A composition for treating water contained in enclosures, such as swimming pools, spas, whirlpool tubs and cooling towers, which includes at least one boron compound, cyanuric acid, at least one...
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7384562 |
Treatment of brown grease
The invention is a process for treatment of brown grease, where the brown grease comprises water, food solids and free-oil. This process starts with the collection of the brown grease into a...
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7374694 |
Method for remineralizing raw water
The invention relates to a method and installation for treating water for human consumption, for an industrial process, for agricultural purposes or for other purposes. The method used to...
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7374687 |
Method of decolorizing stock-raising treatment water
A decolorization treatment method in which not only can a liquid that has been obtained by treating raw water that is stock-raising treatment water in a purifier tank be decolorized swiftly with...
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7361283 |
Extraction and treatment of heavy metals
Contaminated waste streams or soil or sludge is subjected to a first treatment stage with an acid liquor at a pH below 2 and at a solids content from 5 to 30%; then the liquid and solid phases from...
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7354733 |
Method for sorting and separating living cells
We disclose methods of sorting or separating mixtures of living cells (e.g., eukaryotic, prokaryotic, mammalian, pathogenic, bacterial, viral, etc.). We perform our methods by activating...
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7335309 |
Method for removing metal compounds from waste water
A method for removing metal compounds from waste water comprising the steps of adjusting the pH of the water to from 5 to 12 and preferable 6 to 9; aerating the waste water; adding a flocculating...
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7335308 |
Method for treatment of liquids, in particular, for purification of contaminated water
The invention relates to a method and an installation for treating liquids, especially for purifying contaminated water. Said method consists of the following steps: the raw water is pre-purified...
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7320759 |
Sludge treatment method
A sludge treatment method allowing an improvement in a phosphorus recovery rate and sludge volume reduction by efficiently eluting phosphorus in the sludge. The sludge treatment method includes: a...
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7300589 |
Process for removing arsenic from aqueous streams
Arsenic is removed from water and other aqueous feeds by (1) treating the feed with a compound containing cerium in the +4 oxidation state, preferably cerium dioxide, to oxidize arsenic in the +3...
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7294268 |
Metal containing waste water treatment method and metal containing waste water treatment equipment
This metal containing waste water treatment method introduces a metal containing waste water from above into a submerged membrane separation tank 1 in which a reaction section 2 , a submerged...
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7273559 |
Process for removal of impurities from an oxidizer purge stream
A process is disclosed that relates to the removal of impurities and the recovery of a mother liquor and wash filtrate from an oxidizer purge stream produced in the synthesis of carboxylic acid,...
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7267778 |
Device and process for treating a liquid medium
A device for treating liquid medium has an ultrasound emitter located relative to a compartment of a container holding a liquid medium and a microbubble emitter located relative to the compartment....
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7264734 |
Method for treating dredged material
The present invention provides a method for treating dredged material in which liquid is first added to the dredged material, and dewatering the dredged material to obtain a filtrate and a solid...
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7252843 |
Composition for cleaning contained bodies of water
A composition and method for cleaning, sanitizing and maintaining contained bodies of water such as swimming pools, wading pools, fountains, ornamental ponds, etc. The composition includes...
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7244363 |
Methods for treating heavy halide brines with permanganates
The present invention relates to the use of permanganate in the removal of heavy metal contaminants from heavy halide brines. In some embodiments, the present invention discloses methods of...
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7238287 |
Method for providing safe, clean chlorinated recreational water
A solid formulation for use with sodium chloride and a chlorine generator to provide safe, clean chlorinated recreational water. The formulation comprises a chlorine stabilizing agent and a...
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7220360 |
Integrated technology in sequential treatment of organics and heavy metal ions wastewater
This invention offers an integrated technology in sequential treatment of wastewater. Low biodegradable organics and heavy metal ions are both contained in wastewater from surface finishing...
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7166227 |
Method of treating digested sludge
A method of treating, in wastewater purification, sludge containing organic matter, divalent iron and phosphorus, in which
the sludge that is treated is made to contain dissolved iron and...
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7157009 |
Method for removing Cryptosporidium oocysts from water
A method for stabilizing and removing Cryptosporidium oocysts or Giardia cysts from water. The method comprises adding chitosan, a salt or solution of chitosan to water containing ...
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7156995 |
Aeration tank control valve system
Mineral contaminants are removed from water in a system in which water is sprayed into an air head at the top of a tank through a diffuser and withdrawn through a pick-up tube. A solenoid valve...
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7115201 |
Method of treating mine drainage
A method of treating mine drainage water including the step of adding a scale control agent to the mine drainage water and, optionally, adding an oxidizing agent to the mine drainage water and/or...
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7077963 |
Processes for water treatment
The invention provides compositions comprising bauxite refinery residues that have been reacted with sufficient calcium and magnesium ions that they have a reaction pH of less than 10.5, and one or...
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7033507 |
Method for removing metals from acid mine drainage
A method for removing metal contaminants from acidic mine wastewater using lignin derivatives, such as lignosulfonates and kraft lignin, an alkali coagulant, such as a lime compound, and an...
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7014770 |
Filtering method of a colloidal solution
A filtering method is directed to a wastewater of CMP process, which includes sub-micrometer particles suspended as colloid. The wastewater is filtered by a gel membrane formed on a surface of...
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7008543 |
Use of chlorine dioxide and ozone for control of disinfection by-products in water supplies
A method of oxidation or pathogen inactivation in water supplies using the combination of treatments of chlorine dioxide and ozone in the sequential steps prior to filtration and distribution....
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6991730 |
Methods for removing organolead compounds from aqueous compositions
Methods for removing organolead compounds from aqueous and non-aqueous organolead compositions. The methods of the present invention include: providing aqueous or non-aqueous compositions including...
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6986840 |
Methods for removing organolead compounds from non-aqueous compositions
Methods for removing organolead compounds from aqueous and non-aqueous organolead compositions. The methods of the present invention include: providing aqueous or non-aqueous compositions including...
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6984328 |
Method for removing metals from aqueous solutions using mixed lithic materials
The present invention provides a process for removing metals from aqueous solutions. This process entails contacting the aqueous solution with at least one neutralizing agent and at least one...
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6962629 |
Method for moving contaminants from gases
Carbon dioxide is purified through the use of catalytic oxidation. Carbon dioxide is exposed to at least one catalyst, oxidizing at least a portion of the nonvolatile organic residues to form...
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6942808 |
Oxidative evaporation process and apparatus
The present invention is an oxidative reaction that converts organic content in the wastewater into harmless CO2 and H2O. The heat produced by the oxidative reaction evaporates the water, thereby...
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6932909 |
Method of treating mine drainage
A method of treating mine drainage water including the step of adding a scale control agent to the mine drainage water and, optionally, adding an oxidizing agent to the mine drainage water and/or...
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6916427 |
Electrochemical method for treating wastewater
A method of purifying wastewater as a fluent coming either from industrial plants or from municipal sewage runs. The method includes the steps of running the wastewater as a fluent into a headworks...
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6913698 |
Method for reducing COD (chemical oxygen demand) in waste water by using O3 with valent ion chelation
Techniques for treating waste water by adding a valent ion, such as CaO/CaCO 3 , which depends on the pH value of the waste water, to reduce the chemical oxygen demand (COD) are provided. Organic...
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6884391 |
Photo-assisted oxidation of inorganic species in aqueous solutions
A method for oxidizing an inorganic species in an aqueous solution comprises the steps of: (i) supplying an oxidizable source of sulphur, and oxygen to the solution; and (ii) irradiating the...
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6884358 |
Liquid treatment methods
A unitary liquid flow separator-collector-distributor controls the flow of liquid streams in liquid treatment tanks and treatment methods that can utilize the entire cross section of the vessels in...
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6863826 |
Animal waste effluent treatment
Animal waste such as fecal material from swine, chicken, turkey, and cattle is converted into useful forms such as fertilizer, other types of soil builders, and even nutrient feed additives....
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6863825 |
Process for removing arsenic from aqueous streams
Arsenic is removed from water and other aqueous feeds by (1) treating the feed with a compound containing cerium in the +4 oxidation state, preferably cerium dioxide, to oxidize arsenic in the +3...
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6863819 |
Water treatment method
The invention provides a method treating acid raw water including the step of neutralising the water by adding calcium carbonate to it in a neutralising stage. The neutralised water is then...
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6827874 |
Water treatment compositions
Compositions, methods and kits for purifying, clarifying nutrifying and any combination thereof, contaminated drinking water, which contain a primary coagulant material and a bridging flocculent...
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6824691 |
Process for treating liquid manure
Process for treating liquid manure, comprising the introduction of homogenized liquid manure into a tank, into which are introduced some polymers/copolymers that bring about an interchange to...
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6808636 |
Treatment of sewage sludge
A method for reducing sludge viscosity of a sewage sludge having a solids concentration of at least 10% (w/w). The method comprises the steps of increasing the pH of the sludge to 9.5-12.5%, at...
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6802979 |
Composition and method for treating polluted waters and water sediments
A composition having a depot effect and a method for treating polluted waters and water sediments such that constituents that are hazardous to water are essentially decomposed or bound....
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6797195 |
Method for recovering and separating metals from waste streams
A method for recovering and separating precious and non-precious metals from waste streams, which removes, separates, and recovers such metals in a cost effective manner with more than 95% removed...
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6787043 |
Water purification system and method
A water purification system and method using an ionizer and an ozonation treatment for ionization, oxidation and/or decomposition of undegradeable contaminants is disclosed. A high...
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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...
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6755973 |
Waste water treatment process for animal processing contaminant removal
A process and system for removing animal processing contaminants and fats, oils, and greases from large volume quantities of waste water. In the process, a waste water stream containing the...
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