Characterization of microbial communities and composition in constructed dairy wetland wastewater effluent.

ABSTRACT: Constructed wetlands have been recognized as a removal treatment option for high concentrations of contaminants in agricultural waste before land application. The goal of this study was to characterize microbial composition in two constructed wetlands designed to remove contaminants from dairy washwater. Water samples were collected weekly for 11 months from two wetlands to determine the efficiency of the treatment system in removal of chemical contaminants and total and fecal coliforms. The reduction by the treatment was greatest for biological oxygen demand, suspended solids, chemical oxygen demand, nitrate, and coliforms. There was only moderate removal of total nitrogen and phosphorus. Changes in the total bacterial community and ammonia-oxidizing bacterial composition were examined by

SUBMITTER: Ibekwe AM 

PROVIDER: S-EPMC194942 | biostudies-literature | 2003 Sep

REPOSITORIES: biostudies-literature