- Snow filtration
Snow filtration is a system to deal with left-over
snow in anenvironmentally friendly way. snow is removed from roads is done to ensureroad safety . Roads are salted to cause the snow to melt on the road so that it doesn'tfreeze after melting. The conventional method is by dumping the snow into rivers, which increases the saltconcentration in the water.Method
In spring, as snow melts the salt that was put on it is left behind, which can be environmentally damaging as it creates a hypertonic environment for plants that are affected.
The snow
runoff is collected and brought to a collection center. It is directed through an oil and gritseparator which also monitors the consistency of pollutants in the runoff. The oil and grit separator causeselectrochemical and biological processes, which bindheavy metals andnutrients to the sediment through the process ofRedox . At the same time, this reduces the amount ofchlorine present in the runoff.The runoff then flows into a catch
basin , where plants use the saltions (e.g. K+, P3-, N3-) for their growth. The salts are absorbed by the plants whichfiltrate further, leaving only clean water to go back intostreams andrivers .
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