Chpt 5.1-5.6 (Water Polution)

Question 1

Clean Water Act

Answer 1

Jurisdiction over rivers, lakes, and other natural water bodies.

Regulates what people can output.

Deals with sewage treatment

Question 2

Safe Water Drinking Act

Answer 2

Regulates what people can intake

Sets public drinking water standards

Question 3

Hydrologic Cycle

Answer 3

Natural water cycle.

Question 4

Withdrawals

Answer 4

Total Loss of water

Withdrawals = consumption + returns

Question 5

Water Pollutant Types

Answer 5

Pathogens

Oxygen demanding wastes

Nutrients

Salts

Heavy Metals

Pesticides

Volatile Organic Chemicals

Question 6

Contaminated water disease catagories

Answer 6

Waterborne

Water-washed

Water-based

Water-related

Question 7

Oxygen demanding wastes

Answer 7

Wastes that lower waters dissolved oxygen content

Normally biodegradable organic substances or inorganic compounds that add to oxygen demand.

Question 8

DO

Answer 8

Dissolved oxygen content

Min recommended for fish is 5mg/L

Question 9

Nutrients

Answer 9

Chemicals that increase algae and plant growths thus increasing oxygen demand

Nitrogen, phosphorus, carbon, sulfur, calcium, potassium, iron, manganese, boron, and colbalt

Question 10

Types of oxygen demand

Answer 10

Chemical oxygen demand

Biochemical oxygen deman

Question 11

Biochemical Oxygen Demand

Answer 11

Oxygen demanded by living things to live

Question 12

Chemical Oxygen Demand

Answer 12

Oxygen used up by chemicals as they oxidize

Question 13

Pollution source types

Answer 13

Point source

Non point source

Question 14

Point source

Answer 14

Discharge pipes, dumping sites. Pollution comes from one source

Question 15

Non point Source

Answer 15

More intermediate and dispersed sources of pollution.

Agriculture, farms, pastures, urban areas

Question 16

Biochemical oxygen demand types

Answer 16

Carbonaceous oxygen demand

Nitrogenous oxygen demand

Question 17

Five day BOD test

Answer 17

Test used to measure the BOD of a sample of water.

Question 18

Nitrification

Answer 18

Additional dissolved oxygen demand caused by oxidizing nitrogen

Question 19

Theoretical Oxygen Demand

Answer 19

The theoretical measure of oxygen demand. Is calculated from chemical equations

Question 20

Chemical Oxygen Demand

Answer 20

Measures oxygen demand while ignoring the ability of microorganisms to degrade the waste. Uses a strong oxidizing chemical to oxidize the wastes instead of waiting on microorganisms to do the job.

Question 21

Deoxygenation

Answer 21

Rate that is proportional to BOD

Question 22

Rearation

Answer 22

Rate at which oxygen is replenished

Question 23

Oxygen sag curve

Answer 23

Graph of DO vs miles down river

As temp increases waste decomposes faster