About TAKAMATSU AKIRA
About 三井三池製作所化工機事業部
About TAKADA KOICHI
About 三井三池製作所化工機事業部
About aeration
About activated sludge process
About Sewage and wastewater treatment facilities
About Biological treatment of sewage and wastewater
About ドーム
About ディフューザ
About ばっ気