Why Is Secondary Treatment Often Needed for Sewage

question 62

Multiple Choice

Why is secondary treatment often needed for sewage?

• A)The dissolved organics are too high and lead to bacterial growth.
• B)The solution is contaminated with dangerous bacteria.
• C)There are too many dissolved inorganic compounds.
• D)There are too many finely divided particles that need to be filtered.
• E)none of the above

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Definitions:

Nat Turner's Rebellion

An 1831 slave revolt in Virginia led by Nat Turner that resulted in the deaths of many slaves and white citizens, and led to harsher slave laws.

American Slavery

The institutional practice of owning and exploiting African Americans as property for labor, prevalent in the United States until the Civil War.

Dissolve the Union

The concept referring to the secession of Southern states from the United States, leading to the Civil War.

Richmond

The capital city of the Commonwealth of Virginia in the United States, known for its rich history, particularly during the American Civil War as the capital of the Confederacy.