Comparison between Vertical-Horizontal and Horizontal-Vertical hybrid constructed wetlands.

Abstract

Water pollution cause serious health risk to public. Treating wastewater in allow cost
 efficient way is necessary for the region. This project was designated to describe the
 usefulness of macrophytes Typha angustifolia L and Phragmites australis, since this could
 be an index for its utility as a biological purifier for advanced treatment of wastewater.
 For this purpose a specific model treatment project was hybrid constructed wetland.
 Constructed wetlands have become a good alternative to urban wastewater treatments. To
 achieve higher treatment performances, the HCW has various types. The project consists
 of several purification treatment units; Storage tanks, pre-sedimentation and two hybrid
 constructed wetlands. They are designed as (Vertical-Horizontal and Horizontal-Vertical)
 HCW, along with sand filtration implemented with two local macrophytes (Typha
 angustifolia and Phragmites australis). Experimental hybrid constructed wetlands contain
 macrophytes, they have grown for 50 days (the period needed for stabilization and
 adaptation), and taken untreated and treated wastewater samples twice a month periods
 from June 15, 2013 until September 15, 2013. Water samples were analyzed to determine
 the some heavy metals in inlet and outlet HCW. Results showed that the decreases in Iron,
 Copper, Cadmium and Lead contents in the outlet wastewater treatment in (Vertical-
 Horizontal) HCW higher decreases than (Horizontal-Vertical) HCW. These results
 showed the design (Vertical-Horizontal) HCW better than the design (Horizontal-
 Vertical) HCW to wastewater treatment.