Abstract: An object is to provide an electrode for electrolysis which is preferable in generation of ozone water usable in cleaning and sterilizing of water and sewage, or cleaning in a semiconductor device manufacturing process by an electrolysis process, and a method of manufacturing this electrode for electrolysis. The surface of a conductive substrate constituting the electrode for electrolysis is coated with a noble metal such as platinum or a noble metal oxide to form an intermediate layer, further a surface layer is constituted of a dielectric material on the surface of the intermediate layer, and the surface layer is provided with holes.

Abstract: There are provided a nitrogen treating method and system for a nitrogen compound, which can treat the nitrogen compound efficiently and which can reduce the size and cost of an apparatus. The gist is that, in a nitrogen treating method wherein a nitrogen compound in for-treatment water is treated according to an electrochemical technique, a cathode reaction region and an anode reaction region are defined by a cation exchange membrane interposed between a cathode and an anode, and the for-treatment water treated in the cathode reaction region according to the electrochemical technique is treated with hypohalogenous acid, or, ozone or active oxygen according to a chemical technique.

Abstract: Object of the preferred embodiment is to remove sol-form microparticles and nitrogen components contained in CMP wastewater. Sol-form microparticle components contained in CMP wastewater are removed by a filtration treatment using a filter device 13, having a gel-form second filter. Also, nitrogen components in the CMP wastewater are removed by an electrochemical treatment using electrode 12. The filtration treatment and the electrochemical treatment can be carried out in individual tanks or can be carried out in the same tank. By performing the filtration treatment and the electrochemical treatment in the same tank, a space-saving water treatment device can be provided.

Abstract: There are provided an electrode for electrolysis which takes into consideration safety to human bodies and environmental pollution upon disposal of the electrode, produces ozone with high efficiency and has excellent durability, a production process of the electrode, and an active oxygen producing device using the electrode. In an electrode 5 for electrolysis which has an electrode catalyst at least on the surface and produces ozone or active oxygen in for-treatment water by electrolysis, the electrode catalyst contains a dielectric which constitutes more than 70% of the surface area of the electrode catalyst.

Abstract: An object of the present invention is to provide a waste water treating method and a waste water treating apparatus which are capable of treating for-treatment water containing a nitrogen compound and a phosphorus compound at low costs and efficiently. The waste water treating method is a waste water treating method for treating a nitrogen compound (nitrate nitrogen) and a phosphorus compound (phosphate ions) in for-treatment water by electrolysis as an electrochemical process, the method comprises a first treating step of immersing a pair of electrodes in the for-treatment water at least partially so as to treat the for-treatment water by electrolysis, one of the electrodes being a cathode made of a conductive material and the other of the electrodes being an anode made of iron, and a second treating step of treating the for-treatment water with hypochlorous acid, ozone or active oxygen after completion of the first treating step.

Abstract: An object of the present invention is to provide a water purification system capable of treating for-treatment water containing a nitrogen compound such as polluted ground water efficiently and achieving a reduction in size of the system. The water purification system comprises an electrodialyser for concentrating a nitrogen compound in polluted ground water as for-treatment water containing a nitrogen compound, a nitrogen treatment device for treating the nitrogen compound in the for-treatment water treated in the electrodialyser by electrolysis as an electrochemical process, the for-treatment water containing at least chloride ions, and a pump for returning the for-treatment water treated in the nitrogen treatment device to the electrodialyser.

Abstract: There is provided a nitrogen treating method capable of treating nitrogen compounds efficiently. The method is a nitrogen treating method of treating nitrogen compounds in for-treatment water by electrolysis and performs a first treating step of producing ammonia from the nitrogen compounds in the for-treatment water by electrolysis using a cathode and an anode between which a cation exchange film is interposed so as to define a cathode reaction region and an anode reaction region, and a second treating step of removing the ammonia in the for-treatment water treated in the cathode reaction region by the first treating step.

Abstract: There are provided a nitrogen treating method and system for a nitrogen compound, which can treat the nitrogen compound efficiently and which can reduce the size and cost of an apparatus. The gist is that, in a nitrogen treating method wherein a nitrogen compound in for-treatment water is treated according to an electrochemical technique, a cathode reaction region and an anode reaction region are defined by a cation exchange membrane interposed between a cathode and an anode, and the for-treatment water treated in the cathode reaction region according to the electrochemical technique is treated with hypohalogenous acid, or, ozone or active oxygen according to a chemical technique.

Abstract: In a radiation type air conditioning system for cooling or heating fluid such as air or refrigerant through heat exchange and supplying the cooled or heated fluid into a radiant panel to radiatively cool or heat a room, the air is cooled by a heat exchanger (evaporator), and the cooled air is supplied onto the radiation face of the radiant panel by a fan to prevent dew condensation on the radiation face of the radiant panel. If the air which is cooled and dried by the evaporator is heated by a heater when it is supplied onto the radiation face of the radiant panel, the dew condensation preventing effect can be enhanced. Further, plural through holes are formed in the radiation panel and the cooled air is blown out onto the radiation face through the through holes, so that the dew condensation preventing effect can be enhanced.

Abstract: An air conditioner for reduction of energy consumption without impairing the comfortable feeling, which comprises a room temperature detector for detecting the room temperature of an air-conditioned room, temperature setting apparatus for setting a target temperature, air conditioning device for performing an air conditioning operation to bring the room temperature detected by the room temperature detector toward the target temperature, and target temperature charger, which corrects the target temperature to rise and fall periodically in accordance with a predetermined rule after the room temperature has substantially reached the target temperature through use of the air conditioning devices. The charger shifts the average value of the target temperature after the start of the correction in such a direction that the air conditioning load of the air conditioning device is reduced from that for attaining the target temperature before the correction.