Multiple choice

Which of the following refers to the treatment and disposal of human waste?

  1. Waste hierarchy

  2. Industrial wastewater treatment

  3. Agricultural wastewater treatment

  4. Sewage treatment

  5. Radioactive waste treatment
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sewage treatment is the treatment and disposal of human waste. Sewage is produced by all human communities and is often left to compost naturally, or is treated using processes that separate solid materials by settlement and then convert the soluble contaminants into biological sludge and gases such as carbon dioxide or methane.

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