Septic wastewater MOST likely has a DO range of:

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Prepare for the ADEQ Wastewater Treatment 1 Test. Study with quizzes, multiple-choice questions, and detailed explanations. Ace your exam!

Multiple Choice

Septic wastewater MOST likely has a DO range of:

Explanation:
Septic wastewater is typically anaerobic, meaning microbes rapidly consume the little oxygen present and the dissolved oxygen drops to nearly zero. Dissolved oxygen is measured in milligrams per liter, so a reading of essentially 0 mg/L indicates no oxygen dissolved in the water. That’s why a value around zero best describes the DO range for septic wastewater. The other options refer to air-purifying devices (types of masks/respirators) rather than a dissolved oxygen measurement, so they don’t describe the DO level in the wastewater.

Septic wastewater is typically anaerobic, meaning microbes rapidly consume the little oxygen present and the dissolved oxygen drops to nearly zero. Dissolved oxygen is measured in milligrams per liter, so a reading of essentially 0 mg/L indicates no oxygen dissolved in the water. That’s why a value around zero best describes the DO range for septic wastewater. The other options refer to air-purifying devices (types of masks/respirators) rather than a dissolved oxygen measurement, so they don’t describe the DO level in the wastewater.

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