Scientists in Lucknow have patented an on line water purification system that not only makes water free from bacteria in ten minutes but also removes toxic metals from it.The low-cost system, which
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/online-system-purify-water-patented
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/dams
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/irrigation