Sewage treatment tank - Obutsushirosou

…The first septic tanks were installed in Japan at the end of the Meiji period, and their use has gradually increased since then. There was a time when they were called sewage treatment tanks or sewage septic tanks. From the Meiji period to the Taisho period, the role of septic tanks was focused on preventing acute infectious diseases and parasitic diseases, and the disinfection of discharged water was considered the primary purpose, with water quality conservation being a secondary concern. …

*Some of the terminology that refers to "sewage treatment tank" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…日本で初めて浄化槽が設置されたのは明治末期であり，それ以後しだいに増加してきた。汚物処理槽あるいは汚物浄化槽と呼ばれた時代もあった。明治から大正にかけての浄化槽の役割は急性伝染病や寄生虫病の予防に重点が置かれ，放流される水の消毒が第一義的に考えられ，水質保全との関係は第二義的なものであった。…

※「汚物処理槽」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報