Treatment Efficiencies of the Vertical Flow Pilot-Scale Constructed Wetlands for Domestic Wastewater Treatment

Authors : E Asuman KORKUSUZ

Pages : 333-344

Doi:10.3906/sag-1203-95

View : 19 | Download : 13

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :To foster the practical development of the constructed wetlands used for water quality enhancement in Turkey, 2 vertical subsurface flow pilot-scale constructed wetlands were implemented on the METU campus, Ankara, Turkey. Both of the wetlands were planted with Phragmites australis and operated identically at a flowrate of 3 m3.d-1 and a hydraulic loading rate insert ignore into journalissuearticles values(HLR); of 0.100 m.d {-1}, intermittently. The main objective of the research was to quantify the effect of different substrates insert ignore into journalissuearticles values(gravel and blast furnace granulated slag); on the nutrient removal performance of the constructed wetlands in the prevailing climate of Ankara. According to the monitoring study insert ignore into journalissuearticles values(July 2002-January 2003);, concentration based average removal efficiencies for the slag and gravel reed beds were as follows: TSS insert ignore into journalissuearticles values(64% and 62%);, COD insert ignore into journalissuearticles values(49% and 40%);, NH4+ -N insert ignore into journalissuearticles values(88% and 58%);, TN insert ignore into journalissuearticles values(41% and 44%);, TP insert ignore into journalissuearticles values(63% and 9%); and PO43- -P insert ignore into journalissuearticles values(60% and 4%);. In general, the treatment performance of the slag system was better than that of the gravel system.
Keywords : Vertical flow constructed wetland, Domestic wastewater treatment, Nutrient removal, Blast furnace granulated slag