e/Snow filtration

Information
has gloss	eng: Snow filtration is a system to deal with left-over snow in an environmentally friendly way. Snow is removed from roads is done to ensure road safety. Roads are salted to cause the snow to melt on the road so that it doesn't freeze after melting. The conventional method is by dumping the snow into rivers, which increases the salt concentration in the water.
lexicalization	eng: Snow filtration
instance of	c/Sustainable technologies