water pollution
TRANSCRIPT
Water Pollution7SCIENCE: Wed. Feb. 16
What are some types of water pollution?
• Bacteria and viruses
• Untreated sewage and garbage
• Radioactive waste
• Chemicals like pesticides, fertilizers, herbicides
• Oil from cars• Soaps
What are some causes of water pollution?
• Humans and other organisms produce much of this pollution that can end up in: Oceans, lakes, rivers and groundwater
• Illegal management of waste:– Dumping chemicals and garbage into water
• These pollutants can cause birth defects and health problems such as cancer and liver damage in humans and animals
How can we manage this water pollution?
• Water treatment facilities– Water is treated (cleaned) and
returned for human use– The large pollutants are filtered
through many different processes
• Reducing water pollution by working together:» Countries must try and keep water (for drinking
and other uses) clean and safe!
Example: Water treatment system
How can we remove this pollution?• Bioremediation– Bio = life, remediation = fixing a problem
• This process uses living organisms to make a substance that is harmful or dangerous into one that is harmless or safe
• Bacteria break down the harmful wastes
• Can be used for many resources: soil and many types of water
• How can we reduce water pollution?
Video about Garbage in the Pacific Ocean