Establishment of experimental methods of verifying UV dose disitribution in UV flow device

2016 Fiscal Year Final Research Report

• Project/Area Number: 26420529
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Civil and environmental engineering
• Research Institution: Ochanomizu University
• Principal Investigator: Otaki Masahiro お茶の水女子大学, 基幹研究院, 教授 (70272367)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 紫外線消毒 / 流通式装置 / 生物線量計 / 照射量分布の検証 / ファージの同時投入

Outline of Final Research Achievements

The coliphages whose UV inactivation rate constants were from 2 to 9 mJ/cm2 were collected and verified by the accurate UV batch test. The detection ability of several kinds of phages with several kinds of host bacteria were investigated to find the appropriate combination. As results, the mix solution of MS2, ΦX174, T4 (or T7) were possible to detect and measure the concentration separately when they were introducing together for bio-dosimetry experiment. Then the mix solution of MS2, ΦX174, T7 were introduced to the plant scale UV flow devices and it was confirmed that the inactivation ratio of introduced three phages could be measured. Consequently, the RED (Reduction Equivalent Dose) of different three phages could be measured in completely similar condition by using mix solution and these REDs could verify the simulated UV dose distribution more accurately.

Free Research Field

環境衛生工学