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7622047 |
Fluidized bed wastewater treatment
A fluidized bed reactor ( 14 ) for removing phosphorus and nitrogen from wastewater has a column comprising a number of sections. ( 15 A, 15 B, 15 C, 15 D) The diameter of the column changes...
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7575691 |
Method 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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7553423 |
Method for treating aqueous sludge, material so produced and the use thereof
The invention relates to a method for the accelerated dehydration of sludges in sludge disposal areas, especially of sludges from rivers and harbors, by the exclusive use of anionic polymer...
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7497955 |
Method of dewatering thin stillage processing streams
A method dewatering thin stillage process streams generated in the processing of grain to ethanol comprising adding to the process streams an effective flocculating amount of an anionic copolymer...
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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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7429329 |
Hybrid chemical/mechanical dewatering method for sewage treatment plants
A hybrid chemical/mechanical dewatering sewage treatment plant and method employing rapid sludge chemical dewatering technology in conjunction with slower conventional mechanical dewatering solids...
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7422692 |
Raw influent treatment processes eliminating secondary biological treatment
Presently no chemicals are added in the pulp/paper mills wastewater treatment. There is a loop hole with the Biological Oxygen Demand test utilized. Regulators depend on the Biological Oxygen...
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7404898 |
Method and installation for the production of lime water from deionised water
A method of producing lime water comprising deionising dilution water by membrane filtration, distillation or an ion exchange resin and adding silicate ions to the deionised water. Thereafter, the...
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7374689 |
System and method of gas energy management for particle flotation and separation
A system for separating particles from a contaminated liquid stream includes an apparatus for mixing the liquid with one or more separation enhancement additives and gases. A pressure reducing...
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7338604 |
Process for recycling paint flush solution
A process for removing solids from a water-based flush solution, The process includes: providing dirty flush solution; directing the dirty flush solution to a treatment vessel; adding one or more...
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7303685 |
Polymer control system
A feedback control for a polymer dispensing system, which otherwise continuously adjusts the polymer feedrate so as to keep the measured streaming current of filtrate from a sludge dewatering...
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7279103 |
Process for the purification of acidic metal-bearing waste waters to permissible discharge levels with recovery of marketable metal products
Acidic metal-bearing wastewaters are treated to produce a finished water of sufficient purity to meet discharge standards while recovering metals removed in forms which are commercially valuable....
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7273561 |
Method for determining the chemical dosage required to reduce sulfides in wastewater to acceptable levels
An apparatus and method of determining chemical dosage required to reduce sulfides in wastewater includes providing a headspace apart from the wastewater. The temperature of the wastewater and the...
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7264733 |
Method for treating heavy-metal-containing wastewater using sulfidizing agent
A method and apparatus for treating heavy-metal-containing wastewater using a sulfidizing agent. Sulfidizing treatment is carried out by adding a sulfidizing agent to heavy-metal-containing...
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7220382 |
Use of disulfonated anthracenes as inert fluorescent tracers
The use of an isomer of anthracene disulfonic acid as an inert fluorescent tracer is described and claimed. The utility of this type of inert fluorescent tracer in boiler systems to trace unwanted...
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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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7204930 |
Water purification system and method
An oxidation filtration system for cleaning groundwater, the system having an aeration tower and a filtration tank. Within the filtration tank is an upper chamber and a lower chamber. Contained...
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7189327 |
Use of anionic copolymers for enhanced recovery of useful coal and potassium chloride from screen bowl centrifuge
A method of enhancing the recovery of useful coal or potassium chloride from screenbowl centrifuge separation operations comprising adding to the screenbowl centrifuge, from about 0.005 lbs active...
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7182873 |
Method of fluoride-containing wastewater treatment
First, a primary fluoric ion concentration detection process is performed, and a primary calcium salt addition process is performed to add calcium salt in a first reaction tank, wherein the dosage...
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7157008 |
Apparatus and process for water conditioning
A conditioning process and equipment are provided for removing hardness from water circulated in a system, such as an evaporative cooling system. A sidestream from such system is routed to a...
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7153436 |
Method for enhancing cyclonic vessel efficiency with polymeric additives
The present invention is directed to a novel method and system for enhancing the efficiency of hydraulic centrifugal separators (cyclones) in the removal of fine size particles from a liquid...
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7090777 |
Aggregation precipitation method
The present invention has an object to provide a compact aggregation precipitation method and an apparatus therefor which prevent the outflow of flocs and do not deteriorate the turbidity...
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7087174 |
Enhanced recovery of useful coal, potassium chloride and borax from screen bowl centrifuge
A method of enhancing the recovery of useful coal or potassium chloride or borax from screenbowl centrifuge separation operations comprising adding to the screenbowl centrifuge, from about 0.03 lbs...
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7037433 |
Methods for water and wastewater sludge treatment using floc or network strength
Systems and methods for polymer addition control for sludges from water and wastewater treatment. In a treatment process where flocculating agents are used to promote solids aggregation, intrinsic...
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7034193 |
Method for purifying spent acid
A method for purifying a spent acid catalyst from an acid catalyzed chemical reaction that generates a mixture of a product, spent add and tar, includes the steps of separating the mixture of...
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7014775 |
Method for mixing additives with sludge in a powered line blender
A powered in-line blender for mixing additives to sludges or other flowable liquid/solid mixtures. The blender is particularly useful in a method of blending polymer to municipal sewage sludges to...
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7014774 |
Method of treating oil-containing waste water
A method of treating an oil-containing waste water includes adding, where the waste water has been adjusted to have a pH between eight and twelve and have a temperature not higher than 50° C., a...
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7014773 |
Demulsification of emulsions by socillatory mixing
The invention includes a method for demulsification of water-in-oil emulsions, oil-in-water emulsions, and mixtures of water-in-oil and oil-in-water emulsions by oscillatory mixing of the emulsions.
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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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7001524 |
Method for removing scale causing chemicals in hot water systems
Hot water pipes, in areas with hard water, tend to fill with scale until they no longer pass enough water. De-scaling water pipes with acid is dangerous, expensive and damages the pipes. Ion...
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6989103 |
Method for separating fluids
Methods of treatment of fluids produced by an oil or gas well following a stimulation operation, allowing separation from the fluids and re-injection of oil and gas hydrocarbons in a production...
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6986358 |
Method and composition to decrease iron sulfide deposits in pipe lines
The levels of iron sulfide present in a conduit, such as a pipeline, are reduced by contacting the conduit, on an inner surface, with a composition obtained from an aqueous solution containing at...
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6962662 |
Process for treating lightly contaminated acid mine water
A process for removing metal sulfates from dilute aqueous solutions in which a conductivity control solution is injected into the stream. The solution is selected to increase the conductivity of...
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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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6896817 |
Essentially insoluble heavy metal sulfide slurry for wastewater treatment
A product and method for the removal of pollutant heavy metals from aqueous solutions which precludes the end user from storing, handling, feeding and controlling hazardous soluble sulfide...
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6893572 |
Solids accumulating flotation separator
The invention is directed to a method for flotation separation. The method has the steps of feeding an influent stream containing liquids and solids to a vessel, while removing clarified liquid at...
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6849190 |
Methods for polymer addition control for water treatment
Systems and methods for polymer addition control for wastewater treatment. In a water treatment process where flocculating agents are used to promote solids aggregation, intrinsic physical...
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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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6818799 |
Process for removing tar from spent acid
There is a process for removing by-product tar during the manufacture of isopropyl alcohol. The process comprises the following: a) reacting propylene with concentrated sulfuric acid and water to...
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6797179 |
Method for removing dissolved metals from wastewater by electrocoagulation
A system is provided for removing dissolved metals from industrial wastewater by electrocoagulation. The system includes an electrocoagulation reactor with a DC power supply having an insulation...
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6776914 |
Process for treating liquid septage
A process for treating liquid septage and other biosolids having the steps of placing a known amount of liquid septage in a tank, mixing in a sufficient quantity of alkaline material to raise the...
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6733679 |
Method of treating an electroless plating waste
A method of treating an electroless plating waste is provided. The waste is contained and an ability of a reducing agent to reduce a metal of the waste is decreased, for example by adding a...
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6716358 |
Demulsification of water-in-oil emulsions
The invention includes a method for demulsification of water-in-oil emulsions.
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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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6645385 |
System and method for removal of fluoride from wastewater using single fluoride sensing electrode
A system for removing fluoride from wastewater is provided. The system comprises a reaction tank for processing said wastewater by adding calcium salts, a filtration tank for removing the...
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6578781 |
Method for the disintegration sewage sludge
There is a method for which a sewage sludge is permitted to flow from a first connecting region 21 to a treatment device, which works with rotation and stresses the sewage sludge with severing...
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6565755 |
Sludge density measurement for controlling a sludge treatment stage
A process and apparatus therefore in which a sludge treatment stage 24 is controlled in response to the density or solids content of the sludge includes flowing sludge along a flow line 1 ...
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6535795 |
Method for chemical addition utilizing adaptive optimization
The present invention provides a method for chemical addition utilizing adaptive process control optimizations having a combination of expert system(s), neural network(s) and genetic algorithm(s).
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6514418 |
Method of dewatering slurries using leaf filters (filter presses)
The invention relates to a process for dewatering sewage sludges using plate filters, wherein the flocculated sewage sludge treated by means of organic polymer flocculation aids and optionally...
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