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

Smith Matthew | Zendy; Stuntz Sean | Zendy; Xing Yun | Zendy; Magnuson Matthew | Zendy; Phillips Rebecca | Zendy; Harper Willie F. | Zendy

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

Author(s) -

Smith Matthew,

Stuntz Sean,

Xing Yun,

Magnuson Matthew,

Phillips Rebecca,

Harper Willie F.

Publication year - 2021

Publication title -

water and environment journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.437

H-Index - 37

eISSN - 1747-6593

pISSN - 1747-6585

DOI - 10.1111/wej.12682

Subject(s) - activated sludge , bacteriophage ms2 , chemistry , bacteriophage , food science , resilience (materials science) , ethanol , environmental chemistry , environmental engineering , biochemistry , environmental science , sewage treatment , materials science , escherichia coli , composite material , gene

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 × 10 8 PFU/ml, the peak respiration rates varied between 9.1 and 10.5 mg O 2 /gVSS/hr, generally similar to the rates observed in negative controls. MS2 did not alter the molar CO 2 ‐produced‐to‐O 2 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 on activated sludge, and it presents a protocol that can be used in operational situations.

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