With the population growing, there is a remarkable rise in the quantity of municipal waste water. And to save the environment, already grappling with other pollutants, it is imperative to treat this
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/technique-treat-municipal-water-waste
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/pioneer-lucknow
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environmental-science