Removal of detergents in car wash wastewater by sub-surface flow constructed wetland

Authors : Tuğba NACAR, Deniz UÇAR, Zehra SAPCİ AYAS

Pages : 820-827

Doi:10.17798/bitlisfen.1108112

View : 18 | Download : 11

Publication Date : 2022-09-30

Article Type : Research Paper

Abstract :Suspended substances in car washes can often be easily removed by physicochemical processes. The main problem is to remove dissolved substances such as detergents from the water. In this study, a biodegradable substance Sodium Lauryl Sulfate (SLS) was removed from the car wash wastewater by the use of Phragmites australis in the subsurface constructed wetland. For this study, 4 plexiglass reactors having an effective volume of 10.8 L with the dimensions of 15cm×45cm×20 cm were used. The experiments were conducted with vegetation which was called SCW and without vegetation which was named control group (CG), as two groups. A serial connection of two reactors was performed for each group. Up to 90% detergent removal was observed with the vegetation in the SCW with a loading rate of 75 L/(m2.d) The effluents quality showed that the treated water can be reused carwash or irrigation for landscaping.
Keywords : Constructed wetland, water reuse, sodium lauryl sulfate, water treatment, detergent