What is ideal retention time in Bioreactor for Fluid Wastes to become less polluted with reductions in metallic contaminants?

Published June 15, 2016 05:26 by LOKESH PUNJ, A B.TECH. Agr Engg, PGDM-SPA IIMA (1977-9) 25 yrs in Water Piping / Irrigation/Infra Projects