Day 3: What Happens to Liquids When They Go Down the Drain?

Day 3: Recycling Liquids: What Happens to Liquids When They Go Down the Drain? Why Should We Dump Liquids into a Bucket in the Lunchroom?

1) Video: Share this short video about what happens to things that go down the drain.

Discussion topics following the video:

– Why is it better to drain the excess liquid into a bucket and then pour it down the drain?

 [Answer: Because it is heavy and it requires a lot of fossil fuel for a truck to bring the heavy liquid to a landfill or incinerator.  In addition, water treatment plants love the sugars from milk and juice because the sugars are food for the micro organisms that purify the water.]

Recap: Picture of waste water treatment plant schematic:

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2) Math: A school with 600 kids generates about 10 gallons of excess milk and juice every day in the lunchroom. How many pounds of weight is that?  How much per week, month, year? Pelham has 6 schools, Westchester has 40 school districts, 118 private schools and 14 colleges. Milk costs $4.50 per gallon, how much money is going down the drain?

3) ELA :  What does the Waste Water Treatment Plant do? What is the sewer system? How does the waste water get treated?

4) Social Studies: Can you imagine what happens if there were no Water Treatment Plants?

Think about it: Is there a better way than having so much extra milk that children don’t drink?

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