Author(s)

K. M. Leonard, S. P. Key & R. Srikanthan

Abstract

A comparison of nitrification performance in gravity-flow and reciprocating constructed wetlands K. M. ~eonard', S. P. ~ e # & R. srikanthan2 I Associate Professor, Civil & Environmental Engineering Department, University of Alabama in Huntsville, Huntsville, Alabama 35899, USA. '~raduate Researchers, Civil and Environmental Engineering Department, University of Alabama in Huntsville, Alabama, 35899, USA. Abstract This paper presents an analysis of operating data from two types of subsurface flow wetland treatment systems operating in the temperate climate of North Alabama. Specifically data sets from five traditional gravity flow and a sequential batch reactor design treatment systems were used to quantify expected BOD, ammonia, nitrate and turbidity values. Since nitrogen compounds have been difficult to remove in the past, a statistical analysis was performed on the ammonia and nitrate removal efficiencies. A calculation of sample means revealed that the expected value of effluent ammonia a

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