... Onuma Kasukabe, Saitama 344 -0038, Japan (E-mail: satoshi.yamaguchi@chiyodakohan.co.jp) *3 Process Development and engineering Department, Cyiyodakohan Co.Ltd. 5-2-1 Ginza Chuo-ku, Tokyo 1 04- 8115, ... reactor with 8 lamps at flow rate 230 m3/h calculated by using the particle tracks data and Equation (4) ~ (7) , where refractive index:1.5 for quartz, 1.3 for water, assumed dirt factor of quartz ... UV-disinfection Reactor Validation by Computational Fluid Dynamics and Relation to Biodosimetry and Actinometry Kenichiro Deguchi1), Satoshi Yamaguchi2) and Hiroshi Ishida3) *1...