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Flashcards in Water Deck (7)
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1
Q

Hard Water

A

Will not form a lather easily with soap

2
Q

Temporary Hardness

A

Can be removed by boiling

3
Q

Primary Sewage Treatment

A

Screening and settlement

4
Q

Secondary Sewage Treatment

A

Oxidation by microorganisms

5
Q

Tertiary Sewage Treatment

A

Removal of phosphates and nitrates

6
Q

Eutrophication

A

Presence of excessive nutrient content in a water body to an extent that causes overabundant plant growth

7
Q

Biochemical Oxygen Demand

A

Amount of dissolved oxygen in ppm used up by the sample over a period of 5 days at 20 degrees in the dark