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Flashcards in Aquatics Deck (34)
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1

What are the major 7 water quality factors?

-dissolved oxygen
-pH
-Nitrates
-Phosphates
-Carbon Dioxide
-Water hardness
-Flies

2

What is the range for dissolved oxygen?

5.0-8.5 mg/L

3

What is the pH range?

6.7-8.6

4

What is the range for nitrates?

less than .3 ppm

5

What is the range for phosphates?

less than .015ppm

6

What is fecal coliform and where is it found?

Fecal coliform is bacteria found in the digestive tracks of warm blooded animals and humans.

7

What is the range for CO2?

less than 20 ppm

8

What is the range for water hardness in a freshwater lake?

less than 100 ppm

9

What are is the positive of nitrate?

NO3 is a compound found in most food items and is essential to plant growth.

10

What are some dangers of nitatrates?

It is turned into nitrites in the intestine and prevent hemoglobin fro transporting oxygen. It also multiplies when boiled.

11

What is eutrophication?

Eutrophication is the overpopulation of plants and algae causing deoxygenated zones killing fish

12

How does heat effect the amount of oxygen?

The warmer the water the less oxygen

13

What does high phosphate and nitrate levels lead to?

eutrophication

14

What is turbidity?

the amount of particles/ minerals in water

15

Which types of fish are indicators of high quality water?

trout, walleye, herring

16

Which fish are indicators of low or poor quality water?

sunfish, bluegill, catfish , carp

17

What is the domestic water use per person per day in the US?

140gallons

18

What are the 7 main human impacts on water quality?

1-sewage treatment plants/septic tanks
2-erosion and sedimentation
3-toxic waste dumping and runoff
4-oil spills
5-thermal pollution
6-herbicide and pesticide runoff
7- animal waste and fertilizer runoff

19

What are the five steps in a basic drinking water filtration system?

1 aeration
2 coagulation
3 sedimentation
4 filtration
5 disinfection

20

What is a alum?

a sticky particles that clump together dirt and sink during sedimentation

21

What are the 7 main characteristics used to classify aquatic environments?

tidal or not, saltiness, depth, the composition of the base, amount of plants, height of plants, water movement

22

What is safe to drink water called?

potable

23

What is the thick dirt part in wastewater treatment center called?

sludge

24

What is the system for people without sewers?

septic tank system

25

What are the steps in a basic wastewater treatment system?

bar screen, grit chamber, settling tank, aeration tank, settling tank, sludge digester/ drying bed, chlorine disinfection

26

What is the largest watershed of the chesapeake bay?

Susquehanna

27

Wha is pollution?

the presence of a substance in the environment that because of chemical composition or quality prevents the functioning of natural processes and causes undesirable environmental and health effects

28

What do you call an identifiable source of pollution?Non identifiable?

point and nonpoint sources

29

Which federal law established the basic structure for regulating the discharge of pollutants into waterways?

The Clean Water Act

30

What is the line along Havre de Grace, Baltimore, and D.C. called?

the fall line