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English Translations » 高分子及新材料 » One question per day; those who answer correctly receive 6 w

One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； March 23rd

2017-03-23View Original

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Multiple-choice question: To ensure biochemical self-purification, the wastewater must contain sufficient ( ). A. Temperature and pH B. Microorganisms C. MLSS – mixed liquor suspended solids concentration D. DO – dissolved oxygen Answer: D. DO – dissolved oxygen
Reply #22017-03-23
To ensure biochemical self-purification, there must be sufficient (D) in the wastewater. A. Temperature and pH B. Microorganisms C. MLSS – mixed liquor suspended solids concentration D. DO – dissolved oxygen

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Translated at 2026-07-23 12:18:39

Original: https://bbs.hcbbs.com/thread-1764502-1-1.html

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