Depth profiles of biological aerated contactors: Characterizing microbial activity treating reduced contaminants.

ABSTRACT: The biological treatment process consisting of an aerated contactor and filter is effective for groundwaters containing elevated ammonia and other reduced contaminants, including iron, manganese, arsenic, and methane. Depth profiles characterizing microbial activity across aerated contactors are lacking. A 1-year pilot study comparing gravel- and ceramic-packed contactors was conducted, and media depth profile samples were collected at the conclusion of the study. Media and water samples also were collected from pilot-scale aerated contactors at 4 other water systems. Water quality, media surface metals concentrations, and a suite of biofilm parameters were analyzed. Media surface metals concentrations were greatest at the influent end. ATP concentrations, extracellular polymeric substance

SUBMITTER: Keithley AE 

PROVIDER: S-EPMC10866302 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature