GRAND PRIX

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Wastewater is mostly made up of this substance .
. .
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WHAT IS H20?97 of wastewater is actually just
water!
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These materials are separated from wastewater and
can be recycled as fertilizer.
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WHAT ARE BIOSOLIDS?
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Bar screens help to do this to wastewater when it
reaches the treatment plant.
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REMOVE LARGE OBJECTS.The screens remove things
like sticks, rocks, paper rags from the
wastewater.
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This is the primary source of NH3 (ammonia) in
wastewater.
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URINE!
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When water enters the treatment plant it is
called this.
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WHAT IS INFLUENT?
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This is the name for water beneath the earths
surface.
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WHAT IS GROUNDWATER?A large part of our
drinking water comes from groudwater.
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This state uses the most water each year.
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WHAT IS CALIFORNIA? California uses almost 11
of all freshwater used in the US each year.
After California is Texas, Illinois, and Idaho.
Together these states use 28of all fresh water
in the U.S.
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Each year, most of the water in the U.S. is used
for this.
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WHAT IS IRRIGATION?39 of the water we use in
the US goes to watering crops.
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This term describes a region of land that water
flows across or under on its way to a large body
of water (like San Francisco Bay!)
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WHAT IS A WATERSHED?
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These natural environments with lots of bacteria
and slow moving water, are good natural
wastewater treatment plants.
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WHAT ARE WETLANDS AND LAGOONS?
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Water covers over 70 of the earths surface but
only this percent is freshwater.
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WHAT IS 3?Thats right - 97 of all water on
earth is salt water. Only 3 is fresh water, AND
2 is frozen in icecaps and glaciers!
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   This is the name of the process in which
water vapor in the air gets cold and changes back
into liquid, forming clouds. 
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WHAT IS CONDENSATION?
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Heat soaks up water from the oceans, lakes,
rivers, trees and plants in a process called
this.
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WHAT IS EVAPORATION?
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This activity accounts for most of the water we
use in our homes.
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FLUSHING THE TOILETYes, flushing the toilet is
the 1 water use in your home. After that come
showers and baths.
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The average number of gallons of water that each
person in the U.S. adds to wastewater each day.
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WHAT IS 150 GALLONS!This is about 5 bathtubs
full of water.
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This liquid floats to the top during primary
treatment (sedimentation and flotation) of
wastewater.
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WHAT IS OIL?Oil floats to the top because it is
less dense than water.
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When wastewater leaves the treatment plant, it is
called this.
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WHAT IS EFFLUENT?While this effluent is
relatively safe for lakes and streams, it is not
safe to drink!
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The number of hours it takes for wastewater to
get treated.
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ABOUT 18 HOURS!Some cities have faster systems
than others so it can go faster.
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The most important and numerous workers at a
treatment plant
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WHO ARE BACTERIA?Bacteria consume many of the
pollutants in wastewater and convert this food
into more bacteria. These bacteria are later
filtered out of the water.
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The addition of air to water, allows oxygen-using
bacteria to grow. This process is called
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WHAT IS AERATION?
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IN 1972, Congress passed this act to restore and
maintain the quality of water for the environment
and human use.
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WHAT IS THE CLEAN WATER ACT?
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After treatment, water is released to streams,
lakes and bays. The rest can be
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RECYCLED!
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A place where you can used recycled water at tee
time!
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GOLF COURSE!!One golf course can use over
300,000 gallons of water each day!
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When added directly to lakes and streams, this
substance is 1) highly toxic and2) causes
bacteria to steal O2 that other organisms need
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WHAT IS AMMONIA (NH3)?Most NH3 comes from
fertilizers and your pee!!Not only is NH3 toxic
to many organisms, but too much NH3 can actually
suffocate fish and other organisms.
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Where does most wastewater come from? A) Our
homesB) Commercial businessesC) Industrial
facilities
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OUR HOMES!60 of wastewater comes from
residential uses.
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