How water purification equipment and water purification

    公开(公告)号:JP5277688B2

    公开(公告)日:2013-08-28

    申请号:JP2008086478

    申请日:2008-03-28

    Abstract: PROBLEM TO BE SOLVED: To provide a method and apparatus for water purification capable of easily and effectively decomposing an organic substance in water using simply structured installations without utilizing expensive oxygen gas. SOLUTION: The method for water purification is characterized in that air micro-bubbles are injected to water to be treated that contains organic substances, and then the water to be treated is brought into contact with a photocatalyst having titanium oxide on its surface while irradiating the water with ultraviolet rays. The photocatalyst is preferably a nonwoven fabric of a photocatalyst fiber having titanium oxide on its surface. The ultraviolet ray exposed to the photocatalyst preferably has its peak wavelengths at 180 to 190 nm and 250 to 260 nm. COPYRIGHT: (C)2010,JPO&INPIT

    Ceramics and a method of manufacturing the same with a gradient composition surface layer

    公开(公告)号:JP4058955B2

    公开(公告)日:2008-03-12

    申请号:JP2002029616

    申请日:2002-02-06

    Abstract: PROBLEM TO BE SOLVED: To provide a ceramic having a surface layer with a gradient composition, which has excellent functions such as photocatalytic functions, electrical functions, thermo-catalytic functions or a function as a catalyst carrier, or environmental resistance such as oxidation resistance, alkali resistance or wear resistance, and excellent mechanical properties, and to provide a method of producing the same. SOLUTION: The ceramic comprises a composite phase which is constituted of a first phase mainly comprising silicon-based ceramic components and a second phase mainly comprising ceramic components other than the ceramic components in the first phase, and the present ratio of fine crystalline particles of at least one kind of the ceramic components constituting the second phase is increased in a gradient manner toward the surface layer. COPYRIGHT: (C)2003,JPO

Patent Agency Ranking