You may use some advanced ...

Published November 23, 2016 10:50 by LALA BEHARI SUKLA, Research Professor , Siksha 'O' Anusandhan University, Bhubaneswar

You may use some advanced filtration technique.

http://www.newindianexpress.com/states/odisha/2016/nov/09/immt-shows-green-way-for-wastewater-treatment-1536566--1.html