Abstract: Disclosed are an electrode structure including: an electrode plate; and a flow path guide disposed on one side of the electrode plate along the circumference of the electrode plate, and an electrolyzer including the electrode structure.

Abstract: Disclosed is a pipe pigging system for cleaning a pig and controlling a speed of the pig, the pipe pigging system including a pig configured to clean an inside of a pipe for raw material supply while moving in the pipe, a first station connected to a raw material supply side that is one end of the pipe and configured to launch the pig and receive the returned pig, a second station connected to a raw material reception side that is the other end of the pipe and configured to receive the pig launched from the first station and launch the pig toward the first station, a first compressed air supply unit and a second compressed air supply unit configured supply compressed air to the first station and the second station, respectively, to move the pig, a first pig cleaning unit and a second pig cleaning unit connected to the first station and the second station, respectively, to clean the pig contaminated after cleaning the pipe, and a control unit configured to control a pigging operation of the pig launched and re

Abstract: One aspect of the present invention provides a sodium hydroxide production device, which includes: a first tank configured to store a sodium salt including two or more sodium ions in a molecule; a first electrolysis unit including a first anode chamber and a first cathode chamber which are partitioned by a first separator; and a water supply unit configured to supply water to the first tank and the first cathode chamber, wherein the first tank, a pipe configured to supply an aqueous sodium salt solution produced in the first tank to the first anode chamber, the first anode chamber, and a pipe configured to supply a material produced in the first anode chamber to the first tank constitute a closed loop, and a sodium hypochlorite production device including the same.

Abstract: One aspect of the present invention provides a sodium hypochlorite producing system, which includes: a first means configured to obtain saturated salt water and purified water; a second means including a anode chamber and a cathode chamber which are partitioned by a separator, the anode chamber allowing the saturated salt water to be converted into a anodic product including chlorine gas and anodic water, and the cathode chamber allowing the purified water to be converted into a cathodic product including sodium hydroxide, hydrogen gas, and hydroxide ions (OH?); a third means configured to react the anodic product and the cathodic product to produce a mixture including sodium hypochlorite and hydrogen gas; and a fourth means configured to prevent the sodium hydroxide or hydroxide ions (OH?) of the cathodic product or a combination thereof from moving to the anode chamber through the separator.

Abstract: Provided, according to one aspect of the present invention, are a sodium hypochlorite production system and a water treatment method using same, the sodium hypochlorite production system comprising: a first means for obtaining saturated brine and purified water using a first sub-stream branching off from a main stream of water to be treated; a second means for obtaining an anodic product and cathodic product by electrolyzing the saturated brine and purified water; and a third means for obtaining sodium hypochlorite by reacting the anodic product and cathodic product using a second sub-stream branching off from the main stream of the water to be treated.

Abstract: Disclosed are an electrode structure including: an electrode plate; and a flow path guide disposed on one side of the electrode plate along the circumference of the electrode plate, and an electrolyzer including the electrode structure.

Abstract: One aspect of the present invention provides a method of treating ballast water, which includes: a first step of transporting a raw material from a first base to a second base where a vessel is configured to be anchored; a second step of inputting the raw material into an on-site treatment agent manufacturing facility located at the second base to manufacture a treatment agent; and a third step of supplying the treatment agent to the vessel anchored at the second base and treating ballast water using the treatment agent.

Abstract: Disclosed is an electrolysis device including an electrolytic cell composed of an anode compartment equipped with an anode, a cathode compartment equipped with a cathode, and a diaphragm separating the anode compartment and the cathode compartment from each other. The device further includes an alkaline solution supply unit for supplying an alkaline solution as an electrolyte to the anode compartment, an acidic solution supply unit for supplying an acidic solution as an electrolyte to the cathode compartment, and first and second outlets for discharging electrolyzed water from the anode compartment and the cathode compartment, respectively. In the anode compartment, hydroxide ions of the alkaline solution generate oxygen through an electrode reaction, and, in the cathode compartment, hydrogen ions generate hydrogen through an electrode reaction.

Abstract: Disclosed is a pipe-type electrolysis cell including: a pair of terminal electrodes including an outer electrode and an inner electrode that are electrically connected to each other at respective first ends thereof and separated from each other at respective second ends thereof; and a bipolar electrode installed between the terminal electrodes and electrically insulated the terminal electrodes.

Abstract: Disclosed is an electrolysis module including: an electrolysis unit module including a plurality of pipe-type electrolysis cells connected in series with each other; a molding case surrounding the periphery of the electrolysis unit module to protect the electrolysis module; a cell guide member installed in the molding case to support the electrolysis unit module; a power cable having a first end connected to the electrolysis unit module and a second end extending to an outside through the molding case; and a resin layer formed by filling the inside of the molding case to cover the outer surface of the electrolysis unit module disposed in the molding case.

Abstract: Disclosed is a ballast water treatment system including: a ballast water supply unit for supplying seawater employed as ballast water to a ballast water tank; an electrolysis device receiving a part of the seawater being supplied to the ballast water tank, and generating sodium hypochlorite and hydrogen gas as by-product gas by electrolyzing the part of the seawater being supplied to the ballast water tank via the ballast water supply unit; and a hydrogen gas removing device receiving a gas-liquid mixture of electrolyzed water and the hydrogen gas that are generated in the electrolysis device, removing the hydrogen gas by a catalyst reaction, and supplying remaining electrolyzed water to the ballast water tank via the ballast water supply unit.

Abstract: This invention relates to a resource-recycling type method and apparatus for treating industrial wastewater using an oxidizing agent produced from wastewater, wherein, in the treatment of industrial wastewater containing nitrogen compounds and refractory COD-causing pollutants, an oxidizing agent is autonomously produced using ammonia gas stripped from wastewater and is then added back to the wastewater, thus economically treating the wastewater without the need to purchase an expensive oxidizing agent.

Abstract: Disclosed is an electrolysis device including: an electrolyzing tank generating electrolyzed water and hydrogen gas as by-product gas by electrolyzing raw water supplied from a raw water supply unit; and a catalyst reaction tank having therein a hydrophobic catalyst, and receiving the hydrogen gas generated from the electrolyzing tank, and removing the hydrogen gas by a catalyst reaction.

Abstract: The present invention relates to an apparatus and a method for treating ballast water. The object of the present invention is to provide an apparatus and a method for precisely controlling the production, injection, and removal of disinfectants using electrolysis according to the flow rate of ballast water, wherein the ballast water flows into a ballast tank or is discharged from the ballast tank in order to manage the ballast water or ships so that the destruction or disruption of marine ecosystems can be prevented.

Abstract: Disclosed is a pipe-type electrolysis cell including: a pair of terminal electrodes including an outer electrode and an inner electrode that are electrically connected to each other at respective first ends thereof and separated from each other at respective second ends thereof; and a bipolar electrode installed between the terminal electrodes and electrically insulated the terminal electrodes.

Abstract: Disclosed is an electrolysis module including: an electrolysis unit module including a plurality of pipe-type electrolysis cells connected in series with each other; a molding case surrounding the periphery of the electrolysis unit module to protect the electrolysis module; a cell guide member installed in the molding case to support the electrolysis unit module; a power cable having a first end connected to the electrolysis unit module and a second end extending to an outside through the molding case; and a resin layer formed by filling the inside of the molding case to cover the outer surface of the electrolysis unit module disposed in the molding case.

Abstract: The present invention relates to a highly efficient sodium hypochlorite generation apparatus capable of decreasing disinfection by-products, which is a chlorine disinfection device for on-site generation and produces sodium hypochlorite solution by electrolyzing sodium chloride aqueous solution on site, thereby requiring no additional liquefied chlorine storage equipment or disaster prevention equipment and securing flexibility of installation and operation while not being regulated by a high-pressure gas safety control act.

Abstract: This invention relates to a resource-recycling type method and apparatus for treating industrial wastewater using an oxidizing agent produced from wastewater, wherein, in the treatment of industrial wastewater containing nitrogen compounds and refractory COD-causing pollutants, an oxidizing agent is autonomously produced using ammonia gas stripped from wastewater and is then added back to the wastewater, thus economically treating the wastewater without the need to purchase an expensive oxidizing agent.

Abstract: Disclosed is an electrolysis device including: an electrolyzing tank generating electrolyzed water and hydrogen gas as by-product gas by electrolyzing raw water supplied from a raw water supply unit; and a catalyst reaction tank having therein a hydrophobic catalyst, and receiving the hydrogen gas generated from the electrolyzing tank, and removing the hydrogen gas by a catalyst reaction.

Abstract: Disclosed is a ballast water treatment system including: a ballast water supply unit for supplying seawater employed as ballast water to a ballast water tank; an electrolysis device receiving a part of the seawater being supplied to the ballast water tank, and generating sodium hypochlorite and hydrogen gas as by-product gas by electrolyzing the part of the seawater being supplied to the ballast water tank via the ballast water supply unit; and a hydrogen gas removing device receiving a gas-liquid mixture of electrolyzed water and the hydrogen gas that are generated in the electrolysis device, removing the hydrogen gas by a catalyst reaction, and supplying remaining electrolyzed water to the ballast water tank via the ballast water supply unit.