Kiichi Tokunaga
Mitsubishi Heavy Industries
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Publication
Featured researches published by Kiichi Tokunaga.
Desalination and Water Treatment | 2013
Kazuhisa Takeuchi; Yoshiaki Ito; Kiichi Tokunaga; Masahiko Nagai; Hideo Iwahashi
Abstract The Mitsubishi Heavy industries, Ltd. has been challenging the development of a chemical-free pretreatment. In this paper, we will present our experience of the field tests. The test results turned out to be very successful and proved that the chemical-free pretreatment is applicable for reverse osmosis seawater desalination. Chemical-free rapid sand filtration especially is the most promising process, which has been applied as a pretreatment system of salt manufacturing works in Japan and worked in condition for more than 40 years. Although the exact mechanism has not been identified, the performance of this system seems to be related to the microbial activity. It is hoped that this pretreatment system will solve the environmental problem that is caused by a seawater desalination plant.
Archive | 2016
Masayuki Tabata; Yoshiaki Ito; Katsunori Matsui; Kiichi Tokunaga; Takashi Ike; Kazuhisa Takeuchi; Hideo Iwahashi; Takeshi Yasunaga; Masahiro Kishi
Archive | 2010
Nozomu Kawasetsu; Yoshinori Nonaka; Kenji Tanaka; Takayoshi Hori; Kiichi Tokunaga; Hidemi Sawada; Hiroshi Tanaka; Yuichi Kawai; Takahiro Iiyoshi
Archive | 2016
Kiichi Tokunaga; Takeshi Yasunaga; Yoshiaki Ito; Yuta Hashimoto
Archive | 2012
英正 垣上; Hidemasa Kakiue; 嘉晃 伊藤; Yoshiaki Ito; 田畑 雅之; Masayuki Tabata; 雅之 田畑; 克憲 松井; Katsunori Matsui; 貴一 ▲徳▼永; Kiichi Tokunaga
Archive | 2010
Nozomu Kawasetsu; Yoshinori Nonaka; Kenji Tanaka; Takayoshi Hori; Kiichi Tokunaga; Hidemi Sawada; Hiroshi Tanaka; Yuichi Kawai; Takahiro Iiyoshi
Archive | 2016
Masayuki Tabata; Yoshiaki Ito; Katsunori Matsui; Kiichi Tokunaga; Hideo Iwahashi
Archive | 2016
Hidemasa Kakigami; Yoshiaki Ito; Masayuki Tabata; Katsunori Matsui; Kiichi Tokunaga
Archive | 2016
Kiichi Tokunaga; Takeshi Yasunaga
Archive | 2014
貴一 ▲徳▼永; Kiichi Tokunaga; Takeshi Yasunaga; 健 安永; Yoshiaki Ito; 嘉晃 伊藤; Yuta Hashimoto; 裕太 橋本