Class / Patent application number | Description | Number of patent applications / Date published |
205755000 | With mixing, agitating, or gas-liquid contacting | 18 |
20110259761 | Precipitation of hardness salt in flow back and produced water - An apparatus and method for reducing the scaling tendency of fracture-treatment flow back water and oil field brine by the precipitation of hardness salts using carbon dioxide as a carbonate donor. The apparatus includes a treatment conduit comprised of a plurality of segments. The treatment conduit includes a plurality of anode surfaces, a plurality of heated cathode surfaces each associated with an ultrasonic transducer and an arrangement for injecting carbon dioxide into the stream of raw water. The injection of carbon dioxide from an external source helps to reduce the pH of the water and to prevent scaling by softening the water thereby eliminating the use of HCL at the frac job site. The treatment conduit further includes a plurality of static mixers each creating hydrodynamic cavitation thereby facilitating better mixing of the carbon dioxide and higher mass transfer efficiency. | 10-27-2011 |
20130126362 | PROCESS FOR ELECTROCOAGULATION FLUID TREATMENT - A process for electrocoagulation fluid treatment utilizing a tubular member with a plurality of electrocoagulation assemblies disposed therein. The assemblies have first and second conductive plates that are angularly oriented in relation to one another to promote turbulent flow through the tubular member. A non-conductive block is positioned between the plates to stabilize and orient the plates within the tubular member. The conductive plates may be provided with alternating negative and positive charges to combat corrosion. | 05-23-2013 |
20130161202 | ARRANGEMENT AND METHOD FOR POOL SAFETY AND CLEANING AN ELECTROLYTIC CELL - An arrangement for treating water, particularly in swimming pools, with an electrolytic cell and a gas inlet port and fluid communication with a chamber of the cell wherein the gas inlet port allows gas into the chamber to displace water and water flow through the chamber ceases. Additionally, a method for improving safety of a water treatment system the method may include the step of purging water from an electrolytic cell of the water treatment system when water flow through a chamber of the electrolyte cell ceases. Additionally, a method of cleaning electrolytic plates in an electrolytic cell in an arrangement for treating water may include introducing gas into a chamber housing the electrolytic plates, displacing water from around the electrolytic plates with the gas, allowing the electrolytic plates to dry, at least partially, and activating a pump to deliver pressurized water to the chamber. | 06-27-2013 |
20130299361 | System and Method for Treatment of Wastewater to Destroy Organic Contaminants by a Diamond Activated Electrochemical Advanced Oxidation Process - Disclosed is a system and method for treatment of wastewater to destroy organic contaminants using an electrochemical advanced oxidation process. In particular, the method comprises a multistep process, comprising a) generating a concentrated oxidant solution comprising a peroxy oxidant species, such as persulfate or hydrogen peroxide; b) mixing wastewater comprising organic contaminants with the concentrated oxidant solution to provide a mixture comprising wastewater and diluted oxidant, the wastewater and concentrated oxidant solution being mixed in a prescribed ratio to provide a desired concentration ratio of oxidant species to contaminants; and c) in an electrochemical cell comprising a diamond anode, electrolyzing the mixture of wastewater and diluted oxidant, comprising electrochemically activating the peroxy oxidant species for oxidation and destruction of the contaminants. Fast and effective destruction of organic contaminants such as phenol, napthenic acid and other toxic or refractory contaminants is demonstrated at low cost and with reduced usage of added salt. | 11-14-2013 |
20150360975 | METHOD FOR REMOVING PERFLUORINATED COMPOUNDS BY CONCENTRATION AND SEPARATION - Various embodiments provide methods for removing a PFC by concentration and separation. In an exemplary method, a PFC in an aqueous solution or in a mixed water-organic solvent solution can be adsorbed onto a surface of a floc generated by electroflocculation, to form sludge. The sludge containing the PFC can be centrifuged to separate the PFC from the sludge and to form a concentrated PFC solution. Eelectroflocculation provides a simple process that is easy to operate. Reaction conditions are mild. Energy consumption is low. Treatment effect is desirable, stable, and reliable. Industrial application can be easy to implement. Further, the centrifugal separation technology used for the harmless treatment of the generated PFC-containing sludge is novel and does not need to use chemicals. Further, dewatering of the sludge is achieved at the same time during the harmless treatment. The needed equipment is simple and can be automatically operated. | 12-17-2015 |
205756000 | Using oxygenating gas (e.g., ozone, air, etc.) | 9 |
20120055807 | METHODS FOR DECOMPOSING PARTIALLY FLUORINATED AND PERFLUORINATED SURFACTANTS - In a method of decomposing partially fluorinated and perfluorinated surfactants which are, in particular, present in wastewater, sewage sludges and the like, the surfactant is present in solution or suspension and is electrolytically decomposed. An anodic oxidation of the surfactants preferably takes place here. The method is particularly suitable for decomposing perfluorinated alkylsulfonates, in particular PFOS. | 03-08-2012 |
20120097551 | COPPER-BASED WATER OXIDATION CATALYSTS - Methods for electrolysis of water to oxygen gas are provided. The method utilizes dimeric copper cations in water at a basic pH. The cations are provided in the water by adding a complex in solid form with an appropriate anion, or through a “self-assembly” method whereby a copper salt and appropriate ligands are added to water adjusted to a basic pH. The cations decrease the overpotential of water electrolysis, thereby providing for efficient generations of oxygen gas using a catalyst formed from an abundant material (copper). | 04-26-2012 |
20120138482 | SELF-CLEANING ELECTRO-REACTION UNIT FOR WASTEWATER TREATMENT AND RELATED PROCESS - The present invention relates to the treatment of wastewater by electrochemical reactions. More particularly, an Electro-Reaction Unit (ERU) is disclosed. The ERU is provided with at least one electrolytic cell comprising a pair of self-cleaned electrodes for purifying wastewater. Along with electro-reactions, electrodes of the ERU are submitted to passivation, i.e. coverage with an oxide layer. The present invention provides a solution for alleviating passivation with a self-cleaning system comprising hard elements, confined in a cage and movable therein, for bombardment of the electrodes and rupture of the oxide layer. The present invention further provides a related process. | 06-07-2012 |
20120160705 | WATER TREATMENT METHOD AND SYSTEM - A water treatment system includes a reservoir for holding water to be treated, one or more primary electrode pairs at least partially immersed in water held in the reservoir, a power supply adapted to power the one or more primary electrode pairs, and an agitator operable to cause movement in the water and particles and gases therein. Water is treated in the system by performing at least a first electrolysis phase wherein one or more of the primary electrode pairs are powered using electrical current of a first polarity such that for each powered primary electrode pair one electrode provides dissolved ions which act as an attractant for impurities to aid removal of the impurities from the water. The agitator can be operated during the first electrolysis phase to cause movement in the water and particles and gases therein to aid carriage of ions and impurities away from the electrodes. | 06-28-2012 |
20120160706 | APPARATUS AND METHOD FOR ELECTROCHEMICAL TREATMENT OF WASTEWATER - The wastewater treatment apparatus of present invention has an electro-coagulation unit for removing contaminants with at least one anode and at least one cathode and an electro-oxidation unit for oxidizing contaminants with at least one anode and at least one cathode wherein oxidants are electrochemically generated. Based on the type of wastewater, the apparatus can have an electro-flotation unit between the electro-coagulation unit and the electro-oxidation unit. The apparatus also has an oxidant removal unit which can have a metal ion-liberating electrode for reacting with and removing residual oxidants. In some cases, portions of effluent from the oxidant removal unit can be recirculated to the electro-coagulation unit for increased efficiency. | 06-28-2012 |
20120261271 | Nitrogen-Rich Water Production System - The present invention relates to Nitrogen-rich water production system that produces water rich in nitrogen; wherein such water is considered as a fertilizer since nitrogen is an essential nutrient for plants and one of their constituents. Thus, such Nitrogen-rich water can be mixed with irrigation water. The system of the present invention comprises a source of water vapor; an air pump; a source of high potential difference; an electrochemical reaction chamber, wherein such chamber comprises two electrical conductive plates with an air gap between them, means for adjusting the size of such air gap, an inlet, two outlets, a plate of a non-electrical conductive material; and a chemical reaction chamber that comprises a source of atomized water, an inlet, an outlet; a flask, and a plurality of valves. The present invention uses high potential difference to initiate the electrochemical reaction for the production of nitrogen-rich water. | 10-18-2012 |
20120273367 | WATER PURIFICATION SYSTEMS AND METHODS - A water purification system includes at least one flow electrolysis cell Each cell comprising an input for receiving wastewater, a cathode, a non-sacrificial anode, and an output for outputting purified water. The non-sacrificial anode is capable of being operated at an input power of at least about, 1000 W up to about 5000 W to form electrooxidation cocktail, and the electrooxidation cocktail treats the wastewater to form purified water. | 11-01-2012 |
20150307370 | Method of Stretching the Discharge of Plasma in Liquids - A system and method for stretching the discharge of plasma in a liquid utilizes in certain embodiments a first, second and third electrode within a liquid holding container, a gas injection conduit for introducing a gas such as air or oxygen into the container, and a power supply electrically coupled to at least the second and third electrodes. In certain embodiments, a seed plasma generated by a first and second electrode is stretched, and a larger plasma is generated by a first and third electrode. In certain embodiments, a fourth electrode can be used to further stretch the plasma. An increase in gas introduction flow rate can also be utilized to facilitate the stretching of plasma. | 10-29-2015 |
20160009583 | APPARATUS AND METHOD FOR ELECTROCHEMICAL TREATMENT OF WASTEWATER | 01-14-2016 |
205757000 | Bubbling (e.g., for flotation of solids, etc.) | 4 |
20090242424 | METHOD AND APPARATUS FOR TREATING WATER OR WASTEWATER OR THE LIKE - A method and apparatus for treating water or wastewater for drinking and/or industrial use. The method and apparatus comprises of a plurality of vertically positioned electrodes, which are placed in a treating chamber and wherein the electrodes are interconnected to one another. The positive and negative electrodes are insulated there-between. The polarity of the direct current supply is changeable at regular intervals in order to prevent passivation of the electrodes when reaching an even abrasion. The current can preferably be pulsatory. In order to be able to keep the current density between the electrodes at a desired value, the most efficient possible electrolysis is achieved by means of a minimum total current and wherein the spacing between the electrodes are adjustable. | 10-01-2009 |
20100264039 | AGRICULTURAL WATER-RECYCLING SYSTEM COMPRISING FE-IONIZING MODULE AND METHOD FOR RECYCLING AGRICULTURAL WATER USING THE SAME - The present invention relates to an agricultural water-recycling system comprising an iron (Fe)-ionizing module and a method of recycling agricultural water using the same, and more particularly to an agricultural water-recycling system comprising an iron (Fe)-ionizing module and a method of recycling agricultural water using the same, in which phosphorus (P) contained in effluent from a sewage treatment plant is removed by using the iron (Fe)-ionizing module comprising an iron (Fe)-ionizing electrode consisting of an iron plate serving as a cathode and a titanium plate serving as an anode and an electrode-washing device. According to the present invention, an effluent treatment process of a sewage treatment plant and an electrode washing process needed for iron ionization can be simultaneously performed, the iron ionization is controlled depending on the concentration of phosphorus contained in the effluent, thereby improving effluent treatment efficiency. | 10-21-2010 |
20120073985 | METHOD FOR TREATING SLUDGE - In a method for treating sludge ( | 03-29-2012 |
20120205257 | System and Method for Separating Particles from Liquid Media - A system for separating small particles from liquid media comprising: a reactor vessel(s), a hollow primary electrode(s) within the reactor vessel(s), a secondary electrode(s) within the primary electrode(s), an air delivery apparatus configured to deliver coarse air bubbles within the primary electrode(s), an electrical charge apparatus, a separation vessel fluidly coupled to the reactor vessel(s), tertiary electrodes within the separation vessel, and a skimming device configured to collect flocculated material. A method for separating particles from liquid media, comprising the acts of: circulating liquid media throughout a reactor vessel(s), adding coarse air bubbles that travel through a hollow primary electrode(s) to facilitate circulation of the liquid media and removal of micro-bubbles, applying an electrical potential between primary electrode(s) and secondary electrode(s), routing the liquid media to a separation vessel, applying an electrical potential to tertiary electrodes, and skimming flocculated material from an upper surface of the liquid media. | 08-16-2012 |