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⑤第二沈殿池(英語:英語音声) 5. Secondary Sedimentation Tank
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反応槽でできた泥(活性汚泥) のかたまりを3~4時間
かけて沈殿させ、上澄み(処理水) と汚泥に分離します。

Sludge(activated sludge) formed in the Reaction Tank is allowed to settle over 3-4 hours to separate mixel liquor the wastewater into supernatant (treated water) and sludge.

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