Comparative effectiveness of engineered wetland systems in the treatment of anaerobically pre-treated domestic wastewater

摘要: Abstract A study was carried out to assess the effectiveness of engineered wetland systems (EWSs) in treatment domestic wastewater pre-treated an upflow anaerobic sludge blanket (UASB) reactor tropics. Relative advantages using different plants were also assessed. The EWS had three units river sand media. One bed left unplanted and used as a control while each remaining beds planted with either Typha latifolia (cattail) or Colocasia esculenta (cocoyam). able remove well phosphorus, sulphate, ammonia, COD. Mean removals phosphorus (as orthophosphate) 51% for unit, 69% T. 75% C. unit. sulphate 46% 72% 77% ammonia 63% 74% COD 65% 79% This demonstrated that can effectively treat anaerobically UASB effluent. As such, when coupled reactor, is promising alternative traditional septic tank/soakaway widely treating wastewater. reaffirms accepted notion enhance performance systems. However, this study, no significant difference observed between two units.