Functional resilience of activated sludge exposed to Bacillus globigii and bacteriophage MS2.

ABSTRACT: This study evaluated the effect of two biocontaminant surrogates on the activity and performance of activated sludge. In the presence of bacteriophage MS2 at 3.2 × 10⁸ PFU/ml, the peak respiration rates varied between 9.1 and 10.5 mg O₂/gVSS/hr, generally similar to the rates observed in negative controls. MS2 did not alter the molar CO₂-produced-to-O₂ consumed stoichiometry observed during respiration. Similar results were observed for Bacillus globigii (BG). Ethanol, a potential co-contaminant associated with biocontamination incidents, can inhibit initial oxygen uptake. MS2 and BG both adsorbed to activated sludge; post-exposure viability was confirmed for BG but not for MS2. This study is the first to evaluate the effects of BG and MS2

SUBMITTER: Smith M 

PROVIDER: S-EPMC9171731 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature