Basnayaka, H.A.Koottatep, T.2020-03-052020-03-052009Engineer, 42(2):p.40-46https://dl-iesl.nsf.gov.lk/handle/1/2107Vertical flow constructed wetlandsChromium toxicityCODNitrogenToxicity of chromium on nitrogen and biodegradable compound removal in vertical flow constructed wetlandsArticle