A Day in the Life of a Water Purification Engineer. By Brandon Wells and J.P. Hainline. Introduction. Dear Jake, I understand that you are wondering how my job relates to the properties of water. I work for the New York City Sanitation Department as a water purification engineer.
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By Brandon Wells and J.P. Hainline
I understand that you are wondering
how my job relates to the properties of
water. I work for the New York City
Sanitation Department as a water purification engineer.
I will try to answer any of your questions as best as I can.
As soon as the water comes in
from the sewer system, it all flows
to the main holding tank. A
skimmer runs across the top of the
to capture anything that is using
surface tensionto float, or is less
dense than water.
Density- the density of water is 1.0. Any substance with a density less than 1.0 will float on water. The opposite is also true.
Surface Tension- a property of liquids that makes it seem that the surface of the liquid is covered in skin like layers.
Water then flows into a small pipe using
capillary action. From there it flows into
a container in a large glass room. Over
the container is a slanted glass sheet
that leads to another container. The
following process is a lot like the water cycle with its use of evaporation and condensation. Also the water takes a while to evaporate because water has a high specific heat.
Capillary Action- the tendency of a liquid to rise in narrow tubes
Specific Heat- the amount of heat needed to heat 1 gram of a substance by 1 degree Celsius
Most of the harmful things come out of the
water when it is evaporated onto the glass. It
then runs into the holding tank next to the
container. Since water is universal solvent,
Many things would be dissolved inside. When the water evaporates, the solvent is left behind. It is piped to another room using cohesion and adhesion. This is done when the
water sticks to another surface having the property polarity, like a pipe using adhesion and then leap frogs its self up the pipe using cohesion.
Polarity- property of a molecule that has sides that have opposite charges and aren’t balanced
Cohesion- water sticking to water
Adhesion- water sticking to other substances
Water flows through one final pipe and
then through one final screen where it
cascades into another large container.
Here water beads together to make weak bonds called hydrogen bonds. Here iodine tablets are added into the water as a final disinfectant.From this tankthe water is shipped out to your taps, cleaner than it has ever been. I hope that this explains everything you wanted to know about my job. On the next page there will be some fun facts about water.
Hydrogen Bonds- they form in-between each atom and molecule in water
A water spider using surface tension to “skate” on water. The shadows around the legs is where the surface tension is occurring.
An iceberg is less dense than water so it floats.
A water droplet using cohesion to stick together, and adhesion to stick to the leaf.
Some pictures from “clip art”