The detail of vermi-biofiltration/biofiltration unit is given in Fig. 1. In the top layer of Reactor-1, i.e. Layer-V the fresh and viable specimens of Cyprus were planted in top soil layers. The roots of plant were planted deeply and surface layer was irrigated regularly (for one week) by tap water in order to fix the planted Cyprus in top layer of ver-mireactor. The mean density of Cyprus in vermireactor-1 was about l9 plants/in.2. The open space between plant stand was filled with a thin layer of small stone to avoid direct hydraulic impact on the plant and earthworm. In this vermi-biofiltration system efforts were made to create a kind of soil ecological system mainly comprised of thick soil layer spiked with complex rooting system of Cyprus rotundus. The pieces of stones and pebbles in this root-zone-filtration system create an appropriate space for air and inoculated earthworm in sub-soil system. Nonetheless, the root-zone system not only enhances the efficiency of wastewater filtration but at the same time also provide shelters to bacterial communities (e.g., N-fixers, ammonifying and denitrification bacteria) responsible for nutrient removal from wastewater.