
Contaminants – such as medical residues and pesticides – go through the traditional wastewater purifying process and go back to the environment. Concern over their volyme in waste and drinking water is growing globally. Research has found that by modernizing the current wastewater purification process, over 95 percent of contaminants can be removed from wastewater.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/PkDn8LK0ALc/150324084714.htm