About KAZAMA FUTABA
About KATO KENJI
About 土木学会年次学術講演会講演概要集 第2部
About sterilization(disinfection)
About Chemical treatment of water
About Chemical treatment of sewage and wastewater
About 殺菌
About 実験
About 緩衝溶液
About 殺菌効果
About 塩素
About 鉄
About 酸
About カリウム