Why Does Secondary Treatment of Wastewater Require O₂

question 6

Multiple Choice

Why does secondary treatment of wastewater require O₂?

• A) Secondary treatment relies on anaerobic microbes to oxidize organic material.
• B) Secondary treatment relies on anaerobic microbes to reduce organic material.
• C) Secondary treatment relies on aerobic microbes to oxidize organic material.
• D) Photosynthetic bacteria are involved in secondary treatment and they require O₂.
• E) Flocs require oxygen to facilitate biofilm formation.

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Definitions:

Statement Of Cash Flows

A financial report that shows how changes in balance sheet accounts and income affect cash and cash equivalents, breaking the analysis down to operating, investing, and financing activities.

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