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7625490 |
Use of a magnetic separator to biologically clean water
A nitrification-denitrification process using magnetic seeding and magnetic separation to treat water is provided. The process includes biologically converting ammonia to nitrates with a biofilm...
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7560031 |
Process for treating pond water
A process for the treatment of phosphoric acid plant pond water facilitating the recovery of phosphorus values from the input pond water. In certain aspects the process recycles solids from a later...
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7491333 |
Industrial waste water treatment process
A process for the treatment of industrial waste water. The process includes the steps of admixing partially-treated waste water containing precipitated impurities with a flocculating agent in a...
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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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7311841 |
Method for treating water by ballasted flocculation and decantation
The invention concerns a water treatment method which consists in introducing coagulated water in a flocculation zone, to enable flocculation of microflocs in the presence and around a ballast;...
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7303686 |
Method of separating suspension, in particular for waste water treatment, and an apparatus for performing the same
Arrangement for separating suspension, in particular for treatment of wastewater. A flocculating suspension is separated from the liquid by filtration in a fluidized layer in a sludge blanket,...
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7285222 |
Method for recycling sludge during waste-water treatment
A method for recycling sludge during waste-water treatment firstly utilizes a process of chemical coagulation to produce sludge rich in copper ions. The sludge is then leached in a sulfuric acid...
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7087175 |
Method of separating suspension, in particular for waste water treatment
A method of separating suspension, in particular for treatment of waste water, wherein the flocculating suspension is separated from the liquid by filtration in a fluidized layer in a sludge...
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7037432 |
Buoyant media flotation
A clarification system for fluids in which particles are separated from the fluid by flotation and in which the buoyant media inducing the flotation is recycled. Flotation can be assisted by a...
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7001525 |
Method for the treatment of water by ballasted flocculation and gravity separation with variable function modes
The invention relates to a method for treatment of water, permitting the physico-chemical treatment of water, including a ballasted flocculation stage using a granular ballast material with a...
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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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6966993 |
Method and plant for thickening sludge derived from water treatment by flocculation-decantation with ballasted floc
A method is provided for thickening sludge produced through a ballasted flocculation process. The sludge and granular material from the ballasted flocculation process are directed to a sludge...
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6919031 |
Method of treating water and wastewater with a ballasted flocculation process and a chemical precipitation process
The present invention is directed to a method and apparatus for the treatment of water and wastewater. In one embodiment, a method of treating water according to the present invention includes...
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6896815 |
Methods for removing heavy metals from water using chemical precipitation and field separation methods
A two-step chemical precipitation process involving hydroxide precipitation and sulfide precipitation combined with “field separation” technology such as magnetic separation, dissolved air...
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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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6824692 |
Installation for measuring concentration in dense granular material of a flow and water treatment system comprising same
The invention concerns an installation for measuring the concentration in dense granular material in a flow comprising a liquid, a dense granular material and suspended fine particles. The...
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6823238 |
Selective apparatus and method for removing an undesirable cut from drilling fluid
A method and apparatus selective remove undesirable low gravity components from the return stream of drilling mud. The apparatus receives mud returned from the well borehole and transfers the mud...
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6811704 |
Method for anion removal by forming chemical precipitation under an electric field and continuous process for anion removal
The present disclosure relates to a method for removing anions such as nitrate ion, sulfate ion, chloride ion, and phosphate ion existing in underground water, surface water or waste water. The...
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6689277 |
Treatment of liquids with ballasted flocculation
In the typical embodiments disclosed in the specification, a ballasted flocculation liquid treatment arrangement includes a mixing chamber in which liquid to be treated, flocculating agents and...
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6652757 |
Method for high speed dewatering of slurries
A system and method for dewatering a continuous stream of slurry at high flow rates demonstrates enhanced efficiency, economy and ease of operation. A stream of slurry is subject to continuous or...
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6649027 |
Water reclamation system
A water reclamation system for a closed environment includes a mixer that receives brine. A processor is downstream of the mixer, with the processor distilling substantially salt-free water from...
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6645386 |
Water treatment method by ballasted floc including a recycling of granular material
The invention concerns a flocculation-decantation method by ballasted flocs using a granular material and a step which consists in treating the sludge derived from flocculation-decantation in a...
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6630072 |
Methods and apparatuses for treating waste water
Novel methods and apparatuses are disclosed for the treatment of wastewater to reduce often associated offensive odors by promoting aerobic conditions through decreasing the amount of oxygen...
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6627085 |
Treatment of brine to remove metals and silicon therefrom
Disclosed is a process for reducing the amount of silicon in brine. More specifically the silicon content of the brine is reduced to 1 ppm or less by using low caustic excess. The disclosed process...
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6572771 |
Waste water treatment method
An apparatus for treatment of fluorine waste water has an introduction tank, a main treatment tank, a calcium hydroxide tank, a polychlorinated aluminum tank, a macromolecular flocculant tank, a...
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6547969 |
Process for treating fluorine-containing waste solution
A process and apparatus for treating a fluorine-containing waste solution that is able to maintain a high treatment volume while also facilitating easy maintenance. A calcium salt such as calcium...
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6485652 |
Process for physico-chemical treatment of water and installation for embodiment of this process
The invention concerns a method for the physico-chemical treatment of water characterized in that it comprises at least a step consisting in causing the water to be treated in at least one settler...
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6468994 |
Budesonide particles and pharmaceutical compositions containing them
The invention provides finely divided, substantially crystalline particles of budesonide characterized in that they are substantially smooth and having a BET value of from 1 to 4.5 m2/g, a process...
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6447686 |
Rapid coagulation-flocculation and sedimentation type waste water treatment method
The present invention relates to a high speed coagulant-flocculant and sedimentation method for treating waste water, which permits a speedy treatment of waste water including stormwater runoff and...
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6419834 |
Treatment of acidic water containing dissolved ferrous cations
A water treatment process for raw water containing dissolved Fe 2+ and H + cations to reduce the Fe 2 + cation concentration therein involves oxidation of the Fe 2 cations to Fe 3+ cations with...
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6344142 |
Waste water treatment method and apparatus
In a waste water treatment apparatus, sludge settled in a settling tank is treated by being introduced (returned) into a return sludge reaction tank having a settling section in its rear portion....
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6331256 |
Treatment process for fluorine-containing water
Fluorine-containing water is treated by contacting the fluorine-containing water with calcium carbonate to react the fluorine in the fluorine-containing water with the calcium carbonate and fix it...
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6322701 |
Water treatment process
A process for the treatment of waste waters containing chemically reducible dissolved organic and inorganic pollutants and suspended mater in particulate or colloidal form. The process comprises of...
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6322489 |
Drill cuttings solidification for wetlands restoration
A method of restoring wetlands is provided, by separating drill cuttings from drilling fluid, mixing the cuttings with a stabilization medium, and then filling a desired position in the marshland...
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6296773 |
Removal of boron and fluoride from water
A process for reducing boron and/or fluoride ion content of water. Feed water is contacted, in the presence of magnesium, with an alkaline hydroxide to produce treated water and a magnesium...
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6280630 |
Process for the treatment of effluent streams
This invention relates to a process for removing sulphates and calcium from a water stream which includes the steps of: combining the water stream and an amount of amorphous aluminum trihydroxide...
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6277285 |
Process for the clarification of liquids and suspensions
Process employing the technique of ballasted flocculation with a step of injection, into the liquid to be clarified, of a ballast consisting of a granular material and of a polymer, followed by a...
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6267892 |
Fluoride including waste water processing device and method capable of processing fluoride including waste water to have low concentration of fluoride
In a fluoride including waste water processing device which comprises a reaction vessel and a sedimentation vessel, a calcium compound adding device adds calcium compound in fluoride including...
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6245240 |
Treatment of a solution containing iron salts
Provided herein is a process for treatment of solutions which contain ferrous, ferric and soluble manganese species which process comprises addition of an oxidizing agent to such a solution to...
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6214237 |
Process for treating solid waste slurry
A process for the treatment of a solid waste slurry formed from solid waste particles mixed with a liquid includes delivering a solid waste slurry to a first solid-liquid separation means for...
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6210588 |
Method for the physico-chemical treatment of effluents in particular surface water for consumption
Process for the physico-chemical treatment of effluent, especially of surface water intended for consumption, comprising the successive steps of coagulation, flocculation and settling, a contacting...
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6177015 |
Process for reducing the concentration of dissolved metals and metalloids in an aqueous solution
An aqueous solution, for example, effluent from an off-gas scrubber, is treated to remove metal and metalloid ions by in situ precipitation of ferrous ions by the addition thereto of a ferrous...
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6159381 |
Waste paper treatment process
According to the present invention there is provided a method of treating reject from a plant for de-inking waste paper which reject comprises in an aqueous medium a mixture of suspended solids...
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RE36915 |
Process for sodium sulfide/ferrous sulfate treatment of hexavalent chromium and other heavy metals
A process for treating industrial waste water containing hexavalent chromium (Cr +6 ) and other heavy metals is disclosed which comprises reduction of Cr +6 to trivalent chromium (Cr +3 ) and the...
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6126840 |
Process for removing silver in the presence of iron from waste effluent
Process and apparatus for treating an aqueous effluent with high concentrations of silver and ferric/ferrous complexes using multiple additions of one or more water-soluble sulfur containing...
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6106726 |
Method of treating sludge containing arsenic
A method of treatment of an arsenic sludge obtained from a solid-liquid separation step on arsenic waste water by adjusting the value of pH to 12 or higher by adding a calcium compound is...
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6096222 |
Agent to remove dissolved contaminants from water
An apparatus and method for removing hydrocarbon contaminants and heavy metal ion contaminants from wastewater stream comprising the introduction of iron ions into the stream. In one embodiment,...
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6010631 |
Method and installation for treating an untreated flow by simple sedimentation after ballasting with fine sand
In a method of treating an untreated flow of liquid charged with particles and/or colloids, the flow is caused to flow in a coagulation zone that is kept turbulent and in which the flow is mixed...
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5993668 |
Method for removing metal ions and/or complexes containing metal ions from a solution
Metal ions and/or complexes of metal ions are removed from a solution by formation of an insoluble chelated complex of the metal ions and a polymeric precipitating agent. A two-step process of...
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5976383 |
Recycle process for removing dissolved heavy metals from water with aluminum particles
Aluminum particles are reacted with heavy metal ions in a first acidic aqueous solution to form heavy metallic particles that are suitable for recycling and reuse when recovered from the first...
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