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Water Pollution & Treatment. Science 8 Chapter 2C NCSCOS 3.07. Warm-Up : copy each sentence with the correct response. The 3 classes of indicators are \_\_\_\_, biological, and chemical. Nitrates from fertilizers found in a water supply are \_\_\_\_\_\_\_\_\_.

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water pollution treatment

Water Pollution & Treatment

Science 8

Chapter 2C

NCSCOS 3.07

warm up copy each sentence with the correct response
Warm-Up: copy each sentence with the correct response.
  • The 3 classes of indicators are ____, biological, and chemical.
  • Nitrates from fertilizers found in a water supply are _________.
  • The dirtiness or cloudiness of water is ______.
  • pH is a method of measuring the _____ of water.
  • An living organism that is used to evaluate water health is a _______.
  • ______ can form in turbid water or in the presence of nitrates.
  • A _____ is an area of land that shares the same water.
  • Bio- indicator
  • Physical
  • Watershed
  • Algal Blooms
  • Chemical indicators
  • Acidity
  • Turbidity
what is pollution
What is Pollution?

A pollutantis any substance or form of energy that can cause harm to the environment and make it unfit for organisms.

Two types of water pollution:

  • Point Source
  • Non-Point Source
water pollution sources
Water Pollution Sources
  • Point Source- you know the one source of pollution; it is identified; easier to detect and control
  • Non-point Source- comes from many sources that can not be easily identified; harder to control
point source examples
Point-Source examples:
  • Pipe from Sewage Plant
  • Pipe from Industrial Factory
point source examples2
Point-Source examples:
  • Oil Tanker Spill
non point source examples
Non-Point Source examples:
  • RUNOFF!!!
  • Water comes from across a large, more diffuse area of land
  • From…farms, lawns, parking lots, streets, construction sites, acid rain from air pollution, etc.
biomagnification bioaccumulation
Biomagnification/Bioaccumulation
  • Pollution gets into smaller organisms
  • Amount builds up as it gets passed up food chain
  • Chemicals could end up in food eaten by humans
north carolina pollution
North Carolina Pollution
  • Sedimentation – increases turbidity
    • Erosion
    • Development
    • Agriculture – tilling soil, irrigation, livestock
    • Nutrient Pollution – increases Nitrate & Phosphate levels in water
      •  Algae Low Oxygen
      • Fertilizers run off in storm water
      • Fecal Coliform Bacteria from animal feces
water treatment
Water Treatment
  • Sewage Treatment Plants
    • Process raw waste & get water ready to enter back into rivers
    • 1.) Sludge separated, chlorine used to kill harmful bacteria
    • 2.) Oxygen & sludge-eating bacteria used
  • Septic Systems
    • Small wastewater system used by home or business in rural area
    • Sludge consumed by bacteria
    • Cleaner water exits & spreads into ground
water treatment1
Water Treatment
  • Drinking Water Treatment Plants:
  • 1. Water piped in from river or lake
  • 2. Flows through mixers, clumping agents & chemical disinfectants added
  • 3. Clarifying pool separates large particles
  • 4. Filters separate tiny particles of dust & dirt
  • 5. Chlorine used to kill bacteria
  • 6. Clean water goes to water storage tank
slide19
EPA
  • The Environmental Protection Agency sets and enforces water quality standards for wastewater, pollution & drinking water.
  • Focuses on protection of surface freshwater resources
what can we do to help
What can we do to help?!
  • Pick up pet waste
  • Pick up litter
  • Plant vegetation
  • Dispose of chemicals & wastewater appropriately
  • Reduce amount of water used
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