Abstract: Apparatuses and methods for extracting desired chemical species including, without limitation, lithium, specific lithium species, and/or other chemical compounds from input flows in a modular unit. The input flows may be raw materials in which lithium metal and/or lithium species are dissolved and/or extracted. The apparatuses and methods may include daisy chain flow through separate tanks, a column array, and combinations thereof.

Abstract: Apparatuses and methods for extracting desired chemical species including, without limitation, lithium, specific lithium species, and/or other chemical compounds from input flows in a modular unit. The input flows may be raw materials in which lithium metal and/or lithium species are dissolved and/or extracted. The apparatuses and methods may include daisy chain flow through separate tanks, a column array, and combinations thereof.

Abstract: The present disclosure relates to a biocide generating system for inhibiting bio-fouling within a water system of a watercraft. The water system is configured to draw water from a body of water on which the watercraft is supported. The biocide generating system includes an electrode arrangement adapted to be incorporated as part of an electrolytic cell through which the water of the water system flows.

Abstract: A chlorinator configured to produce one or more sanitizing agents from a solute dissolved in water is provided. The chlorinator comprises an operational unit defining an electrolysis chamber for flow therethrough of the water, electrolyzing electrodes for the electrolysis, and a control unit having a housing containing therewithin a chlorinator controller for directing operation of the electrolyzing electrodes. The chlorinator further comprises an electronic flow sensor comprising a pair of spaced-apart sensing electrodes projecting into the electrolysis chamber, and a circuit closeable by electrically connecting the sensing electrodes. The electronic flow sensor is configured to detect a flow condition when the circuit is closed, and to detect a non-flow condition when the circuit remains open.

Abstract: Provided is an exhaust gas purifying apparatus capable of purifying exhaust gas by using water. The exhaust gas purifying apparatus includes an electrolyzed alkaline water generator which includes a cathode and an anode formed of Mg or an Mg alloy, and in which water is electrolyzed through application of voltage across the cathode and anode, to generate electrolyzed alkaline water. The purifying apparatus includes an exhaust gas absorption tower into which exhaust gas is introduced. Spray nozzles spray the electrolyzed alkaline water in the exhaust gas absorption tower.

Abstract: Disclosed are methods to predict the occurrence of polarization and the design and operation of electrochemical systems to maintain a current density below the limiting current density and avoid instability.

Abstract: There is provided a system and method for regulating conductivity of cooling water in a recirculation route of a cooling water recirculation system through which the cooling water is circulated for removing scale from the cooling water. The system comprises an electrolytic device connectable to the cooling water recirculation system for performing electrolysis on the cooling water and a controller.

Abstract: Embodiments of the invention provide a method of regenerating a capacity of a flow-through capacitor. A target value for a water property concentration in a discharge water stream exiting the flow-through capacitor is established. A feed value for the water property concentration in a feed water stream entering the flow-through capacitor is measured. An amount of the water property concentration to be added to the feed water stream is calculated based on the feed value to achieve the target value for the water property concentration in the discharge water stream. An amperage of the flow-through capacitor and a flow rate through the flow-through capacitor is controlled to add ions to the feed water stream to achieve the target value for the water property concentration in the discharge water stream. In some embodiments, the amperage can be set and the flow rate controlled to achieve the target concentration.

Abstract: Methods of ameliorating cellular oxidative stress are disclosed. The methods include contacting at least one cell with a composition comprising a mixture of reduced species (RS) and reactive oxygen species (ROS). The mixture of reduced species (RS) and reactive oxygen species (ROS) mirrors a target mixture where the target mixture is the reduced species (RS) and reactive oxygen species (ROS) found in a known biological system.

Abstract: A swimming pool water leveler system. Implementations may include a water leveler comprising one or more of the following aspects: separate fill and sensing chambers within the water leveler housing; logical water level adjustment features that provide a tactile indicator of water level change; a continuous balance line and overflow line; a water supply line seal valve with a cup seal; a reducer plug in an outlet between the sensing chamber and the balance line to assist in junk removal; and the ability to pressure test the balance line and overflow line at the same time.

Abstract: Apparatus and method for cleaning chlorobenzenes-contaminated soil and groundwater are provided related to environment protection. The apparatus includes a direct current power supply, permeable reactive barrier (PRB) reaction walls and electrodes, wherein the electrodes are arranged in a polluted area according the concentric circles, and are installed into electrode chambers; the PRB reaction walls are installed at ½ between the anode electrode and the cathode electrode and at ¼ from the anode electrode. Chlorobenzenes in the soil and groundwater can be gathered in the PRB reaction walls through the arrangement of the electrode area; and then the chlorobenzenes can be further removed by oxidation-reduction reactions in the PRB reaction walls.

Abstract: Embodiments of the invention provide a method of operating a flow-through capacitor and a related controller for performing the method. The method includes establishing a summed-current capacity of the flow-through capacitor. In an operational cycle, the flow-through capacitor is operated to transfer ions between the pair of electrodes and water. A current is monitored during operation of the flow-through capacitor. This current is integrated over time to calculate a monitored-current value. To determine an end of the operational cycle, the monitored-current value is compared to the summed-current capacity.

Abstract: The present invention provides a remote monitoring system for monitoring the operation of a fluid treatment system and/or the qualities, characteristics, properties, etc., of the fluid being processed or treated by the fluid treatment system. The system includes a remote computer that may be associated with a database that accesses data transmitted from the fluid treatment system with the data collected, acquired, etc., from one or more sensors placed in the fluid treatment system for measuring fluid quality and/or equipment operation in a fluid treatment system. The remote computer may then analyze or manipulate the data to generate an analysis result or analysis report that may be sent or communicated along with the data and/or any historical or expected information or data to a remote viewing device for viewing by a user. A method is further provided for the operation of the remote monitoring system of the present invention.

Abstract: To remove a contaminant from a liquid, a pulsed electrical arc discharge is effected between two electrodes immersed in the liquid, thereby creating a plurality of particles within the liquid. One or both of the electrodes is metallic, for example iron or titanium. Before the pulsed electrical arc discharge is terminated, another step that promotes destruction of the contaminant by particles, such as removing the particles from the liquid or adding an oxidizer to the liquid, is performed. In the case of the extra step being adding an oxidizer to the liquid, preferably the termination of the pulsed electrical arc discharge is followed by allowing the liquid and the particles therein to age.

Abstract: Apparatus and method for cleaning chlorobenzenes-contaminated soil and groundwater are provided related to environment protection. The apparatus includes a direct current power supply, permeable reactive barrier (PRB) reaction walls and electrodes, wherein the electrodes are arranged in a polluted area according the concentric circles, and are installed into electrode chambers; the PRB reaction walls are installed at ½ between the anode electrode and the cathode electrode and at ¼ from the anode electrode. Chlorobenzenes in the soil and groundwater can be gathered in the PRB reaction walls through the arrangement of the electrode area; and then the chlorobenzenes can be further removed by oxidation-reduction reactions in the PRB reaction walls.

Abstract: There are provided an apparatus for water treatment using capacitive deionization and a method for controlling the same. The apparatus for water treatment using capacitive deionization includes a first filter unit and a second filter unit allowing dissolved solids included in an introduced fluid to be adsorbed on electrodes to generate purified water when a water purification voltage is applied to the electrodes, and allowing the dissolved solids adsorbed on the electrodes to be desorbed to generate regenerated water when a regeneration voltage is applied to the electrodes, respectively, and a controller iteratively alternatively applying the water purification voltage and the regeneration voltage to the first filter unit and the second filter unit to generate purified water having a pre-set target total dissolved solids (TDS) value.

Abstract: A method is disclosed in which water is pumped continuously into one end of a container, the pollutants are captured and floated to the surface, the treated and cleaned water flows out the other end and the floated pollutants are removed. In one embodiment, the system consists of at least one container that has a set of electrically active plates and a mechanism for capturing and removing the pollutants that are floated to the surface by the electrically active plates. Multiple containers can be connected in series and used for similar or separate purposes to remove the pollutants. In another embodiment, the single container is partitioned into a multiple of chambers. Each chamber can be used for a similar or separate purpose, which purpose depends upon the application. In both embodiments, the primary reaction consists of electroflocculation, in which a low voltage is applied across a set of metal plates. This liberates metal ions and gas bubbles.

Abstract: Methods and systems for treatment of wastewater. In some embodiments, the system may comprise one or more modules such as an electrochemical module, an electrocoagulation module, a flotation module, an evaporation module, and an ultrafiltration module. One or more detection modules may also be provided to analyze the concentration of one or more wastewater components in the wastewater. Data from such modules may be used to adjust one or more operational parameters or conditions in the treatment system. The system may also comprise one or more features designed to minimize adverse effects on the environment, such as avoiding adding chemicals to the stream, extracting salt or other chemicals for re-use, and/or use of carbon dioxide gas from on-site combustion processes.

Abstract: An automated self-propelled robotic pool cleaner having a housing and drive means for moving the pool cleaner over at least the bottom wall of a pool, is provided with an integral on-board electrochemical chlorine generator for producing chlorine from a chlorine compound, e.g., sodium chloride, that is dissolved in the pool water, a source of electrical power operatively connected to the electrochemical chlorine generator, control means for initiating and terminating the operation of the chlorine generator, and an outlet for discharging water containing chlorine ions produced by the electrochemical generator to thereby distribute the chlorine into the water proximate the exterior of the pool cleaner housing as the pool cleaner follows a programmed operational mode across the bottom and/or side walls of the pool.

Abstract: A wastewater treatment system and method for remediating wastewater and human waste that is self-contained and that has no connection to a municipal wastewater system and no connection to an electrical grid. The domestic toilet and wastewater treatment system can be powered by a photovoltaic panel as a source of electricity. The system includes an electrochemical cell that allows a waste stream to be disinfected in a few hours to a condition where no viable bacterial colonies can be cultured. The system produces a liquid stream that is suitable for system flushing or for uses in which non-potable water is acceptable. The system can generate hydrogen as a product that can be used to generate power. The system can generate nitrate, urea, ammonia and phosphate for use as fertilizer. The disinfected residual organic solids are also completely disinfected for potential use as an organic soil amendment for agriculture.

Abstract: Embodiments of the invention are directed to systems and methods for purifying fluids, such as water. In some embodiments, the water is first filtered by known filtering methods, such as by reverse osmosis or distillation. Once a flow is sensed in the fluid, electrolyte is added to the filtered fluid. Oxygen and hydrogen gas is then formed in the electrolytic filtered fluid via electrolysis to provide a treated fluid.

Abstract: A deionization apparatus for regenerating electrodes using vibration and a method of controlling the same. The deionization apparatus includes electrodes to which ions contained in a fluid are absorbed, and a piezoelectric element to separate the ions absorbed to the electrodes by vibration. Since the ions absorbed to the electrodes are separated using mechanical energy generated by the piezoelectric element, it may be possible to more rapidly perform regeneration of the electrodes.

Abstract: The present invention relates generally to the processing of fluids and/or their carriers. Carriers may comprise pipes, tubes and the like or reservoirs for the distribution and/or storage of fluids. In one form, the present invention relates to a method and apparatus that is suitable for use in the treatment of various fluids, such as water, by introducing at least one chemically active metal into the water and its carriers for disinfection of the water in a controlled manner. The invention also relates to a biasing means for displacement of an electrode arrangement to allow for the introduction of ions into a fluid at a controlled or easily monitored rate that is commensurate with the amount of fluid flow.

Abstract: A water electrolysis system includes a water electrolysis apparatus including an electrolyte membrane. The electrolyte membrane is provided between an anode and a cathode. The water electrolysis apparatus is configured to generate oxygen on a side of the anode and hydrogen on a side of the cathode at a pressure higher than a pressure of the oxygen through electrolysis of water. A gas-liquid separation apparatus separates unreacted water and produced gas discharged from a water outlet of the water electrolysis apparatus. A water circulation apparatus circulates the water between the water electrolysis apparatus and the gas-liquid separation apparatus. The water circulation apparatus includes a return pipe having an on-off valve and connecting the water outlet and the gas-liquid separation apparatus. A hydrogen exhaust pipe is connected to the return pipe between the water outlet and the on-off value and extends upward from the water electrolysis apparatus.

Abstract: In a water processing system including a first volume with a raw water inlet and a soft water outlet and a second volume for collecting minerals therein, and wherein mineral ions are transferred to the second volume using an electrolysis process, a method for enhancing minerals removal comprising the steps of transferring water from the second volume to a minerals removal device and using a partial electrolysis process in the minerals removal device to cause minerals to be deposited there. Preferably, the first and second volumes are separated by a membrane.

Abstract: The system and method is directed to improved separation or clarification of solids from a solids-laden liquid and removal of entrained gasses. A liquid to be treated is introduced into the inlet of a solid-liquid separator modified to include one or more sources of vibrational energy. The liquid is directed through a conduit within the separator. This conduit can be configured into a tortuous flow path to assist in the separation of solids from the liquid. Vibrational energy is applied to the flow path, preferably through the flow path conduit. As solids fall out of solution, they are collected. The clarified liquid is also collected. A vacuum can be applied to the system to assist in moving the solid-liquid mixture through the system and to provide vacuum clarification. Electrocoagulation electrodes and gas sparging can also be employed along with height adjustable weirs and an oil accumulator.

Abstract: A method precipitating struvite in wastewater uses a magnesium sacrificial anode as the only source of magnesium. A high-purity magnesium alloy cast anode was found to be very effective in recovery of high-quality struvite from water solutions and from supernatant of fermented waste activated sludge (WAS) from a high-purity oxygen wastewater treatment plant. Struvite purity was strongly dependent on the pH and the electric current density. Optimum pH of the solution was in the broad range between 7.5 and 9.3, with struvite purities exceeding 90%. The precipitated struvite accumulated in bulk liquid with significant portions attached to the anode surface from which regular detachment occurred.

Abstract: A water treatment system provides treated water to a point of use by removing at least a portion of any hardness-causing species contained in water from a water source, such as municipal water, well water, brackish water and water containing foulants. The water treatment system typically receives water from the water source or a point of entry and purifies the water containing at least some undesirable species before delivering the treated water to a point of use. The water treatment system has a pressurized reservoir system in line with an electrochemical device such as an electrodeionization device. The water treatment system can have a controller for adjusting or regulating at least one operating parameter of the treatment system or a component of the water treatment system. The electrochemical device can be operated at a low current and low flow rate to minimize water splitting or polarization, which minimizes scale formation.

Abstract: An electrolytic method for treatment of water to increase the dissolved oxygen content, the method including: (a) contacting the water with at least one first electrode device; (b) providing at least one second electrode device in non-physical, electrical contact with the water; (c) introducing an oxidant to the water, and (d) passing an electric current between the second electrode device and the first electrode device, so as to establish an electric field in the water of sufficient strength and duration to effect the electrolytic dissociation of the water to produce dissolved oxygen and/or hydrogen species.

Abstract: The present invention relates to a method for preparing an anolyte preparation, said anolyte preparation being suitable as drinking water for domestic animals kept indoors, for example in a barn, a cowshed, pigsty, and/or a poultry house, comprising the steps of: a) providing incoming basic water (202); b) adding sodium chloride to said incoming water; c) conveying said sodium chloride-containing water of step b) through the cathode chamber (212) of the electrochemical reactor (216), and subsequently conveying at least a part of said water that has passed through the cathode chamber (212) through the anode chamber (224) while applying a voltage over a membrane (213) separating the cathode chamber (212) and the anode chamber (224) of the electrochemical reactor (216) and thereby leading an electrical current between said chambers, resulting in formation of an anolyte fraction in the anode chamber; and d) determining pH and ORP of the obtained anolyte fraction, characterized in that data regarding the electrica

Abstract: The invention proposes a pH monitoring device 10 comprising a chamber 107 for containing a solution; a polymer 105 being immersed in the solution, wherein the physical state of the polymer is changeable in dependence on whether the pH of the solution exceeds a threshold value; and a detector 109 for detecting the change of the physical state of the polymer.

Abstract: An apparatus and method for removing contaminant species from water by electrocoagulation are described. Alternating grounded, rotating, planar circular electrodes and stationary planar electrodes function as a Tesla fluid pump when placed in contact with the contaminated water, causing the water to flow between the rotating and stationary electrodes. An insoluble abrasive material introduced into the water removes scale from the electrodes while the water is pumped thereby. A direct electric current is caused to flow between each pair of rotating and stationary electrodes, thereby producing electrocoagulation of the contaminants in the water flowing therebetween. The electrocoagulated materials may be separated from the treated water by filtration or by permitting the treated water to stand for a chosen period.

Abstract: An electrochemical method and system for removing nitrate and ammonia in effluents, using an undivided flow-through electrolyzer, said electrolyzer comprising at least one cell, each cell comprising at least one anode and one cathode, the cathode being in a copper/nickel based alloy of a high corrosion resistance and a high electroactivity for nitrate reduction to ammonia and the anode being a DSA electrode of a high corrosion resistance and a high electroactivity for ammonia oxidation to nitrogen in presence of chloride.

Abstract: In a control device of a plasma processing system, a communication unit is configured to receive processing information related to a carrier of a next processing lot. A determination unit is configured to determine whether the processing information received by the communication unit has pre-treatment information related to one of the plasma processing devices. When it is determined that the processing information has the pre-treatment information by the determination unit, a generation unit is configured to generate an object for declaring execution of the pre-treatment for the carrier of a next processing lot if a desired condition of transferring of the carrier is satisfied. In addition, if the object is generated by the generation unit, a process executing control unit is configured to start the pre-treatment for the target object in the carrier of a next processing lot without any notification that the carrier reaches a destination plasma processing device.

Abstract: An evaporative recirculation cooling water system, the system having a recirculation loop to recirculate water through the system, a space to cool the water in the recirculation loop by evaporation, and an ion removal apparatus to remove ions. The ion removal apparatus has a flow through capacitor to remove hardness ions while leaving silica ions in the water. The flow through capacitor has an inlet connected to a water inlet and an outlet having a regulator to direct the flow of water to the recirculation loop or to a waste water output.

Abstract: An apparatus for producing electrolyzed water includes an electrochemical cell and a solution reservoir containing a solution and having an outlet. An injection pump has an input end in fluid communication with the outlet of the solution reservoir and an output end in fluid communication with the electrochemical cell, wherein the injection pumps an amount of the solution from the solution reservoir to mix with a water solution and enter the electrochemical cell. A current feedback sensor senses a cell current in the electrochemical cell. A current control unit in data communication with the current feedback sensor and the injection pump wherein the current control unit compares the cell current with a preselected current and adjusts the amount of solution pumped from the injection pump responsive to the comparison. The apparatus may also include an automatic control feedback system to monitor and adjust pH.

Abstract: An apparatus for producing electrolytic reduced water, the apparatus including a water purifying unit configured to generate purified water by filtering water, an electrolytic reduced water generating unit comprising a first electrode and a second electrode, which have different polarities, configured to receive the purified water through a first pipe connected to the water purifying unit and configured to generate reduced water containing dissolved hydrogen gas by performing electrolysis on the purified water through the first electrode and the second electrode. a control unit configured to determine a point of time for switching polarities of the first electrode and the second electrode based on the detected water quality and to control an operation of the power supply unit such that the polarities of the first electrode and the second electrode are switched if it is determined that the point of time is reached.

Abstract: A water quality analyzer comprises: sensor electrodes 1a, 1b made of different metals from each other, the electrodes in a liquid of inspecting object generating a sense voltage in proportion to the liquid's impurities concentration; an operational amplifier OP1 amplifying the sense voltage without inverting to provide for a CPU 3; a resistor R0 whose one end is connected to the electrode 1a; and a voltage divider 2 applying a voltage obtained by dividing the sense voltage by a prescribed division ratio to R0's another end. The CPU 3 calculates input signal from OP1 to obtain chlorine concentration and displays the calculated result on a LCD 4 in a measurement mode, and sets the division ratio of the divider 2 so that sense voltage across electrodes 1a, 1b soaked in a liquid including prescribed concentration chloride approximately agrees with a reference voltage of prescribed concentration in a sense-voltage calibration mode.

Abstract: Electrolyzed water producing method and apparatus are provided which are capable of producing electrolyzed water having a desired property irrespective of the quality of raw water supplied and the like while allowing the size and weight of the apparatus and the cost to be reduced by limiting the capacity of an electrolysis power source. The electrolyzed water producing method includes: circulating an aqueous electrolyte solution to a first electrolytic chamber of a pair of electrolytic chambers opposed to each other across an intervening ion permeable diaphragm while supplying raw water to the second electrolytic chamber; and applying a predetermined voltage to a pair of electrodes disposed in the respective electrolytic chambers with the diaphragm intervening there between, to electrolyze the raw water and the aqueous electrolyte solution, thereby producing electrolyzed water in the second electrolytic chamber.

Abstract: A sanitizing system is provided for use in a bathing unit system including a receptacle for holding water in which a halide salt has been dissolved and a circulating system for removing and returning water from and to the receptacle. The sanitizing system includes a sanitizing device having a housing configured to be positioned in fluid communication with the circulation system and an electrolytic cell positioned within the housing so that when power is applied to the electrolytic cell, the halide salt dissolved in water flowing through the housing is converted to an amount of free halogen. A controller controls an amount of power supplied to the electrolytic cell so as to control the amount of free halogen being generated. The amount of power supplied may be adjusted, for example, based on an amount of usage of the bathing unit system, a usage of a circulation pump and/or based on a water temperature. A user control interface for the sanitizing device is also provided.

Abstract: The invention relates to a method for cleaning water or an aqueous flow electrochemically by flotating impurities contained in water for collecting the impurities from a surface of the water. The method includes conveying the water flow to be cleaned through at least one particle bed which behaves bipolarically under electric voltage, which bed is formed of an anode and a cathode and metal particles arranged between the anode and the cathode; leading a changing direct current to the particle bed to maintain electrochemical reactions on anodic regions and cathodic regions of the particles; and dissolving metal of the particles electrochemically to water to split water to micro bubbled hydrogen gas H2 for the flotation and to hydroxide ions OH— for increasing pH of water. The invention relates also to an apparatus for cleaning water or an aqueous flow electrochemically.

Abstract: The present invention is directed to a method and apparatus for improved separation or clarification of solids from a solids-laden liquid. Entrained gasses can also be removed. A liquid to be treated is introduced into the inlet of a solid-liquid separator modified to include one or more sources of vibrational energy. The liquid to be treated is directed through a conduit within the separator. Preferably the conduit within the separator is configured into a tortuous flow path to assist in the separation of solids from the liquid. Vibrational energy is applied to the flow path, preferably through the flow path conduit. As solids fall out of solution, they are collected. The clarified liquid is also collected. A vacuum can be applied to the system to assist in moving the solid-liquid mixture through the system and to provide vacuum clarification. Electrocoagulation electrodes and gas sparging can also be employed.

Abstract: A device for adjustment of the pH of a target liquid includes a working electrode (10), an electrolyte chamber (16) which holds an electrolyte (14), a counter electrode (12) in electrical contact with the electrolyte, a junction (18) which spaces the electrolyte from a target liquid (20) when the working electrode is in contact therewith, and a source of current (22), for supplying current to the working electrode for electrolysis of water at the working electrode, whereby the pH of the target solution is adjusted.

Abstract: Provided is an electro-chemical water treatment apparatus and method for removing total nitrogen ingredients of ammonia nitrogen, nitrous acid nitrogen, nitrate nitrogen etc., organic materials of BOD and COD induction ingredients, and cyanogen included in wastewater and dirty water.

Abstract: An apparatus and a method for electrochemical modification of liquid streams using at least one anode and cathode assemblies arranged to contain liquid electrolytes anolyte and catholyte, a plurality of electrically conducting anode and cathode particulates forming anode and cathode particulate beds, and current feeder and current collector devices in contact with the particulate bed, where the anode particulates and cathode particulates are in motion substantially independent of bulk electrolytes flow.

Abstract: An automated self-propelled pool cleaner having a housing, a water pump for moving water through the housing, drive means for moving the pool cleaner over the surface of the salt water pool to be cleaned, and an integral electrochemical chlorine generator mounted in the housing, includes a processor/controller that is programmed to activate the chlorine generator, the pump and drive means in predetermined operational sequences that minimize wear and tear on the water pump and drive means, while at the same time distribute and maintain a safe level of sanitizing chlorine in the pool, to thereby obviate the need for an in-line chlorinator or other chemical additive treatments; an optional automated sensor device can be provided to activate a secondary maintenance program which enables the pool cleaner to operate over prolonged periods of time as the sole means for filtering and sanitizing the pool water.

Abstract: Ammonium is removed from wastewater and transferred into a secondary water circuit. There, the ammonia is oxidized to nitrogen gas in an electrolytic cell. Disclosed is a process-control procedure for minimizing the electricity supplied to the cell, and for ensuring destruction of ammonia down to desired levels. The procedure involves taking pH-readings of the secondary water, and using those pH-readings to determine ammonia levels, and to determine the need for electricity usage to be stepped up or down, and to establish relationships between pH and the progress of the ammonium disposal treatment. The procedure can be used with diverse ways of transferring the ammonia from the wastewater to the secondary water, and with continuous or batch treatment. Instruments for measuring ammonia-concentration directly are expensive, whereas pH-sensors are simple, reliable, and responsive.

Abstract: An apparatus to remove ions, the apparatus comprising an inlet to let water in the apparatus, an outlet to let water out of the apparatus, a capacitor, and a spacer to separate a first and a second electrode of the capacitor and to allow water to flow in between the electrodes. The apparatus comprises a regeneration mode controller configured to control, during a regeneration mode in which ions previously attracted to the capacitor are released in a waste water stream, one or more of: the electrical current flowing to the capacitor; the voltage on the capacitor; and/or the water flowing in between the electrodes. The regeneration mode controller is constructed and arranged to control one or more of the electrical current, the voltage, and/or the water flow during the regeneration mode such that scaling is reduced or minimized in the apparatus.

Abstract: A method of purifying cooling water which requires the lowest maintenance and management cost without the need for a cumbersome cleaning operation for removing scale in an electrolytic purifying vessel by taking out the electrodes from the electrolytic purifying vessel, and an apparatus therefor are provided. In the method of purifying circulating cooling water by applying a DC voltage across opposing electrodes while flowing water to be treated therebetween, so that ions in the water are electrolytically precipitated on the surfaces of electrodes on the negative pole side, thereby purifying the water to be treated, the electrodes comprise titanium and have an oxide film preformed by heating having a thickness of 5 nm to 130 nm thereon, and electric current is flown between the electrodes in an amount large enough to apply a voltage capable of dielectrically breaking down the oxide film on the surfaces of electrodes on the positive pole side.

Abstract: A device for the purification of water, has the following components: (a) a storage tank (10) for retention of the purified water; (b) a feed pipe (15), leading from the water to be purified to the storage tank (10); (c) a reactor (4) for anodic oxidation of the water arranged within the feed pipe (15); (d) the storage tank (10) having a redox sensor (5) for measuring the redox potential; and (e) water supply from the feed pipe (15) into the storage tank (10) is performed discontinuously.