*Hongxuan YANG¹, Yutaka FUKUMOTO¹, Tokuzo HOSOYAMADA¹, Satoru OHTSUKA¹ (1. Nagaoka University of Technology)

*Hao Zhang¹, Kenji Kawaike², Shoji Okada³, Taku Fujiwara¹ (1. Kochi University, 2. Kyoto University, 3. National Institute of Technology, Kochi College)

*Youichi Yasuda¹, Makoto Ishikawa², Hideyuki Saino³ (1. Nihon University, College of Science and Technology, Dept. Civil Engineering, 2. Japan Sewage Works Agency, 3. Okayama City, Sewerage River Bureau)

*Satoshi Yokojima¹, Takehiro Ando¹, Yusuke Kazehaya¹, Tatsuhiko Uchida², Yoshihisa Kawahara² (1. Shizuoka University, 2. Hiroshima University)

*Obaidullah Safie¹, Akihiro Tominaga¹ (1. Nagoya Institute of Technology)

Satoshi Yokojima¹, *Ryoichi Mori¹ (1. Shizuoka University)