The aim of this work is to assess and compare the performance
of different combinations of treatment wetlands running
under tropical conditions. Twelve lab scale units were constructed
and operated in six different wetland treatment configurations,
two experimental units for each configuration for comparison:
(a) SSHF–SSHF planted, (b) SSHF–SSHF unplanted, (c) SSVF–SSVF
planted, (d) SSVF–SSVF unplanted, (e) SSVF–SSHF planted, and (f)
SSVF–SSHF unplanted. All units operated in parallel receiving primary
treated domestic wastewater.