Combined treatment septic tank - Combined treatment septic tank

Japanese: 合併処理浄化槽 - がっぺいしょりじょうかそう
Combined treatment septic tank - Combined treatment septic tank

…Single-treatment septic tanks are widely used in Japan to convert toilets to flush toilets, and have been installed in the largest number of units to date, but they have limitations in their treatment capacity, and wastewater is often discharged untreated, causing water pollution at the discharge destination. For this reason, in recent years the installation of combined treatment septic tanks has been promoted, and the construction of new single-treatment septic tanks is moving away from this trend. Septic tanks range from small ones, serving five people, to large ones serving tens of thousands of people, and the smaller the tank, the more units are installed. …

*Some of the terminology used in reference to "combined treatment septic tanks" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…単独処理浄化槽は,日本の便所の水洗化において広範に用いられ,これまでに設置された基数が最も多いが,その処理性能に限界があること,雑排水が未処理で放流されることなどから,放流先の水質汚濁を引き起こした。そのため,近年は合併処理浄化槽の設置が推進され,単独処理浄化槽の新設は廃止される方向にある。浄化槽には,処理対象人員5人の小規模から,数万人を超える大規模のものまであるが,設置基数は小規模ほど多い。…

※「合併処理浄化槽」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

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