Advanced Placement (AP) High School

Wastewater from which source is technically considered graywater, but should be treated as blackwater?

toilet

shower

washing machine

kitchen sink

Answers

Answer 1

Answer:

the answer is D, kitchen sink

Explanation:

i just took the test.

Answer 2

Wastewater from kitchen sink is the technical source considered graywater, but should be treated as blackwater. Thus, option D is correct.

What is blackwater?

Blackwater is a mixture of the substances that come from cleansing water and greywater is the one that comes from the things that are not in the toilet.

Greywater that should be considered as blackwater is water from the sink. It contains fats and oils and many organic substances. Blackwater has a big range of materials that put it into this classification. It should be treated with chemicals for disinfection.

Blackwater requires proper biological or chemical treatment and disinfection so that it can be reused. Treated and disinfected blackwater can be used outdoor only, and often for the irrigation.

Therefore, Wastewater from kitchen sink is the technical source considered graywater, but should be treated as blackwater. Thus, option D is correct.

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