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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


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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