The experimental vermi-biofiltration/biofiltration units were comprised of two reactors/batches:(i) long cylindrical unit:Reactor -I and (ii) rectangular unit : Reactor - II. Long unit was constructed with a traditional water filtration system using gravels and sand column at the base and a biofiltration system at the top made of living individuals of wetland plant stand,i.e. Cyprus rotundus and earthworms in its root zone system. An aeration unit was also fixed in the middle layer of the Reactor-I. A plastic circular cylinder of 80 L capacity was used to construct Reactor-I of vermi-biofiltration/biofiltration unit. Following materials/layers were used to fill (from bottom to top) the circular cylinder to construct the vermi-biofiltration/biofiltration unit;