Thursday, March 5, 2015

Living Green Machine

Yesterday, we visited the Environmental Study Center in Mill Basin with Ada's science class. One of the coolest things they do is filter dirty water through a "Living Green Machine." This is a totally eco-friendly way of removing contaminants. It works like this:

Water is funneled from a filthy pond through a series of tanks. Pictured above are the first two. They contain a mixture of microorganisms, algae, and small fish. As the water moves through each of the tanks, it becomes a little cleaner. The tanks themselves become smaller, since less material is needed to clean the water.

Finally, after it has passed through 10 tanks, the water is nearly contaminant-free! How clean is it? Clean enough to be used on a mini garden of wild ginger plants. Including this one, which is so happy, it's flowering!

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