EESA11H3 Lecture Notes - Sodium Chloride, Sewage Treatment, Bioaccumulation

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Published on 16 Apr 2013
School
UTSC
Department
Environmental Science
Course
EESA11H3
EESA11 Lec 10 KNOW + possible questions
KNOW:
Remedial action plan: 3 stages
o Monitoring pollution
o Setting goals, operations and recommendations
o Remedial measures seeing how efforts are working
Ways of pollution (be able to distinguish)
o Point-source pollution discharge of pollution from specific locations
Factory discharge, pipe draining into river, sewage treatment plants
o Non-point source pollution scattered or diffuse; no specific location of
discharge
Air pollution (acid rain), Agricultural fields, feedlots, golf courses
o Atmospheric pollution introduction of chemicals, particulate matter, etc. into the
atmosphere
Plant nutrients and cultural eutrophication
o Oligotrophic bodies of water with clear water and low biological productivity
o Eutrophic bodies of water rich in organisms and organic material
Eutrophication process of increasing nutrient levels and biological
productivity
Cultural eutrophication increase in bio productivity and ecosystem
succession caused by human activities
Gold mining
o Gold = most polluting metal that is mined
o Heap leaching mining process where precious metals ( such as gold) are
extracted by pouring cyanide solution over the ore
Cyanide dissolves the gold or silver in the crushed ore; liquid is collected
and the metals are extracted from it; cyanide is reused and the ore is
dumped
Possible Questions
1. What is water pollution?
a. A change in the chemical, physical and biological health of a waterway due to human
intervention
b. Any physical, biological, and chemical change in water quality that adversely affects
living organisms
2. Define point source. Give two examples
a. Any pollution discharged from specific locations. E.g. factory discharge and wastes
from industries
b. Other examples: drainpipe draining directly into river, industrial waste discharge,
sewage treatment plants
3. Define non-point source. Give two examples.
a. Pollution that is scattered or diffuse no specific location of discharge.
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Document Summary

Remedial action plan: 3 stages: monitoring pollution, setting goals, operations and recommendations, remedial measures seeing how efforts are working. Ways of pollution (be able to distinguish: point-source pollution discharge of pollution from specific locations. Factory discharge, pipe draining into river, sewage treatment plants: non-point source pollution scattered or diffuse; no specific location of discharge. Air pollution (acid rain), agricultural fields, feedlots, golf courses: atmospheric pollution introduction of chemicals, particulate matter, etc. into the atmosphere. Plant nutrients and cultural eutrophication: oligotrophic bodies of water with clear water and low biological productivity, eutrophic bodies of water rich in organisms and organic material. Eutrophication process of increasing nutrient levels and biological productivity. Cultural eutrophication increase in bio productivity and ecosystem succession caused by human activities. Gold mining: gold = most polluting metal that is mined, heap leaching mining process where precious metals ( such as gold) are extracted by pouring cyanide solution over the ore.

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