Environmental Science
Name______________________
Notes Packet- 5B -Chapter 11, Section 3: Water Pollution
Water Pollution- -The two main causes of water pollution are industrialization and rapid
human population growth.
http://youtu.be/wPFtRKY6jQo?list=PLbnvwtAGroLtQSY6nco5uKcWtgxk0HTpi (start 2:10)
http://youtu.be/0KDL_hWNRPY
I. Point-Source Pollution-_____________________________________________________
II. Nonpoint-Source Pollution-__________________________________________________
A. Examples of Nonpoint-source pollution (Table 4)
III. Principal Water Pollutants (Table 5)
Waste water http://youtu.be/a2qqF77Bq88?list=PLbnvwtAGroLtQSY6nco5uKcWtgxk0HTpi
IV. Wastewater-___________________________________________________________
________________________________________________________________________
A. Treating Wastewater--most of the wastewater from homes contains biodegradable
materials that can be broken down by living organisms. However, some of the toxic materials
can’t be removed by a standard treatment.
- http://youtu.be/vhpIAhol-xQ?list=PLbnvwtAGroLtQSY6nco5uKcWtgxk0HTpi
__________________________________________________________________________
__________________________________________________________________________
B. Sewage Sludgehttp://youtu.be/IxfpS1kVGRU?list=PLVhYUv5bgMx72wUeVENG9pWx6Gy9mij-m
C. Wastewater Treatment Process (Figure 17) - http://youtu.be/spofVioFF6w
Primary Treatment1. Filtration-_________________________________________________________
2. First Settling Tank-__________________________________________________
(sludge removed)
Secondary Treatment3. Aeration Tank-______________________________________________________
4. Second Settling Tank-________________________________________________
(sludge removed again!)
5. Chlorination-_______________________________________________________
V. Artificial Eutrophication- http://youtu.be/UGqZsSuG7ao
_______________________________________________________________________
______________________________________________________________________
VI. Thermal Pollution- http://youtu.be/QmBalvjM2BA
_____________________________________________________________________
______________________________________________________
VII. Groundwater Pollution- http://youtu.be/_nSVvFGP-hc and http://youtu.be/5xs1jLlbztE
_______________________________________________________________________
______________________________________________________
A. Cleaning Up Groundwater Pollution-. As a result of the clean water act of 1972,
many states have passed stricter water quality standards. Many toxic metals are now
removed from wastewater before the water is discharged.
How to take a sample of groundwater - http://youtu.be/4h0cEXiRxuE
1) Test water from existing wells
2) Dig new wells (if necessary) and test that water
- http://youtu.be/-wdkGhJnCac (write a general statement. No need for great detail)
______________________________________________________________________
______________________________________________________________________
Groundwater pollution usually results from polluted surface water percolating down into the
aquifer. Pollutants in an aquifer can remain for tens of hundreds of years.
– Pollutants like herbicides, pesticides, fertilizers, petroleum
– Leaking underground storage tanks
Usually petroleum, gasoline, heating products
– Septic tanks, unlined landfills, industrial wastewater lagoons.
Septic Tank - https://www.google.com/?gws_rd=ssl#q=what+is+a+septic+tank
___________________________________________________________
Remediation – definition - http://www.sciencedaily.com/articles/r/remediation.htm
_______________________________________________________________________
In situ vs ex situ radiation - http://bioremediationstudy.tripod.com/id8.html
In situ remediation of contaminated soil - _____________________________________________
_______________________________________________________________________________
Ex situ remediation of contaminated soil -____________________________________________
_______________________________________________________________________________
VIII. Ocean Pollution--Ships can legally dump wastewater and garbage overboard in some
parts of the ocean. But the largest portion of ocean water pollution comes from the land
activities: oil, toxic waste and medical waste. The coastal plant life is most affected by the
pollution since they are located closest to the pollution source.
A. Oil Spills-- Ocean water is polluted by many accidental oil spills. Most of the oil that
pollutes the oceans comes from cities and towns. Every year, around 300 million gallons of
oil enter the ocean from nonpoint sources on land.
Exxon Valdez-1989-where?- http://youtu.be/0CmulSU0wyY - __________________
_________________________________________________________________________
IX. Water Pollution and Ecosystems--Water pollution can cause immediate damage to an
ecosystem. Toxic chemical spills in rivers can kill nearly all living things for miles downstream.
A. Biomagnification- http://youtu.be/RP9hmlRqbxs
_____________________________________________________________________
______________________________________________________
Level of Toxins will be greatest in the ____________________________(see food chain above)
X. Cleaning Up Water Pollution (Table 6) --There are many Federal Laws designed to
improve water quality in the United States. Some of them are:
Clean Water Act of 1972- http://youtu.be/E9PopApDqvo
_______________________________________________________________
_________________________________________________________________
Oil Pollution Act of 1990- http://youtu.be/H9RsCtNZw-A
__________________________________________________________________
_________________________________________________________________
Ocean Pollution Act __________________________________________________________________
_________________________________________________________________
CERCLA__________________________________________________________________
_________________________________________________________________
NPDES__________________________________________________________________
_________________________________________________________________
Safe Drinking Water Act__________________________________________________________________
_________________________________________________________________