Water Flashcards
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
