Removal characterization of 133Cs and 127I in a water treatment plant using lab-scale experiment
Hee Suk Lee1, Jeongyup Lee1, Byeongsuk Yoon1, Yoojin Lim1, Illwhan Choi1, Hyukjin Cho2, Songhee Lee1, and Kyounghee Baik1
1: Water Research and Analysis Center, K-water, 560 Sintanjin-ro, Daedeok-gu, Daejeon, Korea
2: Water supply Operations and Maintenance Dept, K-water, 560 Sintanjin-ro, Daedeok-gu, Daejeon, Korea
Keywords: removal efficiency, jar-test, water treatment plant, radioactive material reference standards
INTRODUCTION
After strong earthquakes hit Japan on March 11, 2011, a massive tsunami followed and hit the north-east coast of Japan. Following the earthquakes and tsunami, Fukushima nuclear power plant was critically damaged, causing officials to an emergency shut down of the reactors and radioactive materials were released into the environment. Evidence of radioactive material fallout has been reported across the country and has been document (Bolsunovsky and Dementyev, 2011; Bowyer et al., 2011; Manolopoulou et al., 2011). The evidence detailed in the document regarding radioactive material has caused public precautions all over the world. Due to the public health risks posed by the threat of radioactive materials in the environment, public health policies have been significantly impacted even though there is no clear evidence of any major health effects to the public due to low levels of radioactivity. In the aftermath of the radioactive material fallout, radioactive materials have been detected in tap water as was reported by the media. The major radioactive materials found were Cs-137 and I-131. Even after that, radioactive materials have been detected in tap water and various foods such as plants and vegetables, which in turn dramatically increased peoples’ concerns about radiation hazards. Even though treatment efficiencies for radioactive materials were evaluated for several processes (Goossens et al., 1989; Shinha et al., 1995; Ro