Comparison of Nutrient and Organic Removal in Constructed Wetlands

Author(s):

Abdul Jabbar. M. , Centre for Environmental Studies, Anna University, CEG- Campus, Chennai-25; Ganapathyvenkatasubramanian S., Centre for Environmental Studies, Anna University, CEG- Campus, Chennai-25

Keywords:

COD, Vertical Flow (VF), HRT

Abstract:

This paper reports the pollutant removal efficiencies of three lab-scale constructed wetland systems treating synthetic grey water. The three systems had identical configurations, each consisting of a vertical flow (VF) constructed wetlands that were filled with organic sugarcane bagasse and brick bats as the main media planted with reed plant typhalatifolia and one controlled system. The primary objective of this study was to remove organics and nutrients present in the greywater. This work is carried out in both batch mode and continuous mode. In batch study, three systems were operated under various HRT of 4,6 and 8 days. In continuous study, wastewater was fed into all systems at flow rate of 15ml/min. The organic carbon (C) content of sugarcane bagasse facilitated denitrification in the bagassewetland and brick bats remove phosphate by adsorption. Overall the better removal efficiency for batch study obtained at HRT 8 days were 70%, 50% and 80% for COD, nitrogen and phosphates in brick reactor. In Continuous study, bagasse reactor removes nitrogen by75% while brick reactor removes both COD and phosphates by 70% and 75% respectively.

Other Details:

Manuscript Id	:	IJSTEV2I12089
Published in	:	Volume : 2, Issue : 12
Publication Date	:	01/07/2016
Page(s)	:	164-171

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