water pollution: causes
DESCRIPTION
Water Pollution: CAUSES. Pictures taken from: www.indiamart.com | www.neftagaz.ru | www2.macleans.ca. Pollutants. Rivers, Lakes & Seas. LDCs. Contamination. Poisonous. Detrimental. Marine Life | People. Locals queuing for water in Africa Picture taken from: www.design21sdn.com. - PowerPoint PPT PresentationTRANSCRIPT
Water Pollution:CAUSES
Pictures taken from: www.indiamart.com | www.neftagaz.ru | www2.macleans.ca
Contamination
Pollutants
Poisonous
Rivers, Lakes & Seas
Detrimental
Marine Life | People
LDCs
Locals queuing for water in AfricaPicture taken from: www.design21sdn.com
Sewage
Households | Industries
Human Waste | Detergent | Chemicals
Treatment Plants
Case Study: Molex - $2 Mil Investment to build Plant
Remove wasteNon-biodegradable substances
Expensive
Algae growth Aquatic
plants below
Animals
Remain
Illegal Dumping
Case Study: Schoeller
HoldingsCyprus Shipping / Hotel Holding
Avoid Costs
Oil-tainted bilge water
4 Occasions[May 2012 – March 2013]
Falsifying Records
$10.4 million FINE
21 March 2013
Industrial
TOXI
COils
Sulfur Nitrates |
Phosphates
Asbestos
Lead | Mercury
Manufacturing Process
Ocean & Marine Dumping Paper |
Food WastePlasticRubberMetallic | Aluminium WasteRU
BBIS
HAluminium = 200
yrs
TIME Paper = 6 wks
Atmospheric DepositionDiagram taken
from: aritech.tnau.ac.in
An oil spill is another form of water pollution.
Occurs when hull is damaged or collision happens.
Difficult to clean up: 1) Non-biodegradable 2) Spreads over large areas easily
Endangers animal and plants which may cause negative impact on human health.
Cleaning up requires huge efforts and is very costly.
Exxon Valdez Oil Spill
One of the most devastating human-caused environmental disasters.
Approximately 55 million US gallons spilled into Prince William Sound.
Cleaning up process involved an estimated 10 000 workers and US$2.1 billion was spent.
Other examples of large oil spills include:
1) Gulf War Oil Spill- Persian Gulf
2) Deepwater Horizon- US, Gulf of Mexico
3) Ixtoc I Oil Spill- Mexico, Gulf of Mexico
4) Fergana Valley- Uzbekistan
5) ABT Summer- Angola
6) Castillo de Bellver- Africa
7) Amoco Cadiz- France, Brittany
Consequence /impacts of Water PollutionEnvironmental impactEconomic impactSocial impact
Endangering Plant & Animal Species Oil SpillsI. Sticks to feathersII. Air trapped between layers of fur/feathers
removedIII. Birds therefore unable to fly thus drowningIV. Birds and animals freeze to death
Impact on ecosystem as many animals/birds perish, disrupting the food chain etc.
Endangering Plant & Animal Species Improper disposal of waste materialI. Detergents/Chemicals improperly disposedII. Leads to growth of algaeIII. Plants dieIV. Animals do not have food - they die
Impact on ecosystem as many animals/birds perish, disrupting the food chain etc.
Negative Impact on humans Indirect effect on usI. Chemicals are disposed of improperly
(China)II. Fishes that consume these plants affectedIII. When we eat them, we may get poisoningIV. People may also suffer from cholera and
typhoid when they drink water that is contaminated.
Economic impacts Impacts Fishermen
Cleaning up oil spills can be extremely costly and requires huge effort
I. Exxon Valdez II. 2.1 billion to clean upIII. 10000 workers
Oil spills
Contaminated Water