Water Pollution Part 2 Flashcards
What is point source pollution?
Pollutants from a specific source, like a storm drain
What is a plume?
What are 3 examples of plumes?
Contaminants that deep from a concentrated area
- LUST
- thermal pollution
- leaking septic tank
What is a LUST?
Leaking underground storage tank
What is non-point source pollution?
Pollutants that don’t have a specific source, like parking lots and agricultural fields
What is atmospheric deposition?
What is 1 example?
Pollutants are released into air and re-deposited elsewhere
Coal plants release mercury (Hg) into air, which settles on lakes and is ingested by fish
What pH is needed to classify rain as acid rain?
7.5
What 2 compounds combine with water to make acid rain?
Nitrogen oxide (NOx) and sulfur dioxide (SO2)
Acid rain leaches what 2 elements from rock?
What are 2 types of rock that are commonly affected?
Aluminum (Al) and mercury (Hg)
Marble and limestone
In water, what are 2 pollutants that cause low pH?
Sulfur and industrial waste
Do sulfur and industrial waste cause a low or high pH in water?
Low
What is N, P, and K?
What are 2 large contributors?
Nitrogen, phosphorus, and potassium
Detergents, fertilizer, and manure
What is oxygen level measured in?
ppm (parts per million) aka mg/L
How does air enter water?
Photosynthesis and waves
What is the healthy oxygen level?
6-10 ppm
What is the biological oxygen demand (BOD)?
The amount of oxygen needed to sustain organisms
What are the results of decomposition?
It releases nutrients and the aerobic bacteria digesting it use up oxygen
What is cultural eutrophication?
Nutrition is increased, hypoxia occurs, algae and phytoplankton grow. Leads to a dead zone.
What is hypoxia?
Low oxygen concentration
Why do algae and phytoplankton grow a lot during eutrophication?
Nitrogen and phosphorus encourage plant growth