Abstract:
In preventing the environment from pollution and Achieving a comfortable ecosystem it is neces sary to investigate new technologies of treatment systems. This study is used to investigate the
treatment performance of horizontal subsurface flow-constructed wetland systems planted with
selected emergent wetland plants for the removal of pollutants from Cafeteria wastewater was
initiated. For this purpose, the treatment plant was fed with Cafeteria wastewater collected from
the JIT student cafeteria. The constructed wetland for wastewater treatment was operated for 4
months. The four constructed wetland cells were packed with gravel media and Bricks with a hy draulic retention time of 5 days. Two beds were left unplanted and used as control while each of
the remaining two beds was planted with Umbrella Grass. The studies demonstrate the success
of constructed wetland systems in removing pollutants of chemical oxygen demand (COD), bio logical demand (BOD), Total suspended solids (TSS), Total dissolved solids (TDS), and chloride.
The study investigated rock type, plant, and time as factors. After 4 months of operation, the la boratory analysis gave a witness that the average removal efficiencies of Gravel planted and
Brick planted wetlands on the fifth contact time were as follows: for gravel with umbrella Grass
color 97.82%, COD 87.73%, BOD, 89.63% TDS, 90.95% TSS 93.78% and chloride 86.6% and
with brick planted during the study, the high removal efficiency of Color 98.87%, chemical oxy gen demand (COD) 88%, Biological oxygen demand (BOD) 90%, Chloride (Cl-) 90%, Total
suspended solid (TSS) 90% and Total dissolved solids (TDS) 92%. In this investigation, the
maximum removal efficiency was obtained at color on Brick with umbrella grass on the fifth day.
The findings of this study showed positive results regarding the use of HSSFCWs for the treat ment of gray water.
