Abstract: Provided is an apparatus and method for measuring a concentration level of particulates in water, by measuring a sound generated upon decomposition of particulates in a water sample which is irradiated by a laser beam.

Abstract: Provided is a submerged-type, electrosorption-based desalination apparatus for water purification and method, comprising applying a DC voltage of 0.1 to 2.0 volts to a carbon electrode of the reactor to thereby adsorb inorganic ions on the carbon electrode, and reversely applying the same DC voltage having opposite polarity to recycle regeneration solution to the outside of the apparatus or into the treatment tank, thereby enhancing a recovery rate. In addition, in order to improve desalination efficiency, the reactor used in the desalination apparatus may be embodied in various forms of T-shaped, linear type, single, composite, and ion exchange membrane electrodes. Therefore, the present invention may be applied to remove inorganic ions from industrial wastewater, sea water, and brackish water, which contain large amounts of inorganic ions.

Abstract: Provided is an apparatus and method for determining a concentration of particulates in water, comprising irradiating a laser beam to a sample for a water quality analysis, and measuring a sound generated upon decomposition of particulates in the sample by the irradiated laser beam to thereby determine a concentration of a material in the sample.

Abstract: Provided is a submerged-type, electrosorption-based desalination apparatus for water purification and method, comprising applying a DC voltage of 0.1 to 2.0 volts to a carbon electrode of the reactor to thereby adsorb inorganic ions on the carbon electrode, and reversely applying the same DC voltage having opposite polarity to recycle regeneration solution to the outside of the apparatus or into the treatment tank, thereby enhancing a recovery rate. In addition, in order to improve desalination efficiency, the reactor used in the desalination apparatus may be embodied in various forms of T-shaped, linear type, single, composite, and ion exchange membrane electrodes. Therefore, the present invention may be applied to remove inorganic ions from industrial wastewater, sea water, and brackish water, which contain large amounts of inorganic ions.

Abstract: A dissolved oxygen removal method using an activated carbon fiber catalyst thereof which includes the steps of a reducing agent injection step for injecting a reducing agent into the water, a reactor entrance dissolved oxygen measuring step for measuring a concentration of a dissolved oxygen contained in a water, a water flow rate control step for controlling the supplied amount of the water, an activated carbon fiber catalyst reaction step for removing a dissolved oxygen contained in the water with the reaction between the reducing agent and the dissolved oxygen in an activated carbon fiber reactor in which an activated carbon fiber catalyst is packed, and a control step for controlling the feeding rate of the reducing agent in accordance with the water flow rate and the reactor entrance dissolved oxygen, for thereby extending the life time of the facility and decreasing the operational and maintenance costs by fully removing a dissolved oxygen in water used for an steam generator or cooling system.

Abstract: An apparatus for measuring a fouling resistance and a cleanliness factor of heat-transfer surface and which is capable of continuously and accurately monitoring a build-up degree of deposits on a heat-transfer surface of a heat exchanger includes a fouling sensor having a given length of metal wire wound inside the heat-transfer surface for measuring an average temperature of the heat-transfer surface, a direct current voltage supply member for supplying a voltage to a heating wire of the fouling sensor, an accurate resistance measuring member connected with a temperature measuring metal wire of the fouling sensor for measuring an electrical resistance of the metal wire, an inlet/outlet portion water temperature measuring member for measuring the temperatures of the inlet/outlet portions of the apparatus, a water flow rate measuring member, and a data calculation apparatus for computing a fouling resistance and a cleanliness factor of a heat-transfer surface.