1000 Ltr Biodigester Tank. Product Price: Rs 19,000 / Piece Get Best Price. Minimum Order Quantity: 1 Piece. We offer 1000 Ltr Biodigester Tank to our clients.Separation Zone:First stage transforms the influent solids to settled solids while allowing scum to float on the surface. It is a primary sedimentation zone in which settled sludge is