| Title |
Wastewater Treatment by using a Rotating Photocaralitic Oxidation Disk System |
| Keywords |
wastewater;photocatalyst;TiO₂;UV;RPOD;폐수;광촉매;이산화티타늄;자외선;회전 광촉매 |
| Abstract |
The wastewater treatment by photocatalyst decomposes pollutants directly in water, and it is easy to decompose indecomposable organics and inorganic. and Especially, it has an advantage that there is no secondary production of pollutants. However, there will be many problems which are generated depending on the type of photocatalyst. The type of rotating photocatalyst minimizes previous problems, and advanced oxidation processes is possible by the application of rotating disc method. The consideration of the characteristics about various designs and operation factors is needed for the application of rotating photocatalyst system. In this study, rotating photocatalyst was manufactured for rotating disc method by fixing of TiO₂. The operation factors were derived for the wastewater treatment by the reaction of rotating photocatalyst. The contained quantity of TiO₂ was limited about 70%. The more the contained quantity of TiO₂ was increased, the more the treatment rate was continually increased. The optimum rotating photocatalyst was R4, and the contained quantity of TiO₂ was 36.8%. The more the exposed amount of UV is increased, the more the decomposition effect of TCODcr was continually increased. However, the adequate strength of light source must be determined by the consideration of economical efficiency. The more the speed of rotating photocatalyst is increased, the more treatment efficiency was increased. When UV lamp was not submerged in reactor, the wastewater treatment was efficient in the order of the depth of water 50%, 30%, 10%, 70%, 100%. This study is a basic research for the development of a system which treats organics in solar light. |