| dc.description.abstract | Landfill leachate is one of wastewater which is toxic and represent a dangerous
source of pollution for the environmental especially water body and groundwater.
Constructed wetland is one of natural treatment that can be a reliable and cost effective
for landfill leachate which was carried out to identify the potential of constructed
wetland in term of its ability in removal of solids, organic matters and nutrients under
different hydraulic loading rate of leachate. A laboratory-scale study was conducted on
combination of subsurface flow and free water surface system (SSF-FWS), whereas set
up to planted and control reactors. Planted reactors were planted with Limnocharis flava
in SSF reactor while Eichhornia crassipes as floating plant in FWS reactor. Control
reactors were left unplanted. This study was operated at hydraulic loading rate of 0.39
m/d and 0.55 m/d and with retention times of 24 hours. The removal efficiency was
evaluated based on pH, turbidity, Biochemical Oxygen Demand (BOD5), Chemical
Oxygen Demand (COD), Orthophosphates (PO4 3−), Ammoniacal-nitrogen (NH3-N) and
Total Suspended Solids (TSS). There was better performance obtained in planted
reactor at HLR of 0.39 m/d. pH value was decrease for 0.39 m/d and 0.55 m/d which
are from 8.43-7.185 and 8.43-7.49, respectively. For 0.39 m/d, the removal efficiency of
turbidity, BOD5, COD, PO4 3−, NH3-N and TSS were 97.43%, 87.5%, 99.52%, 94.63%,
98.59% and 98.32%, respectively. While, for 0.55 m/d, the removal efficiency were
90.83%, 93.73%, 96.73%, 65.85%, 95.99% and 98.32%, respectively. | en_US |
