Virus Log Reduction Values and Dominant Mechanisms in Full-Scale Secondary Biological Wastewater Treatment Systems.

ABSTRACT: Secondary biological wastewater treatment is a core component of potable reuse treatment trains, but it is often uncredited for virus attenuation. This study evaluated virus log reduction values (LRVs) at two full-scale water resource recovery facilities in Southern Nevada: one with conventional activated sludge and another with lagoon treatment. Four human enteric viruses and four fecal indicator viruses were quantified using molecular assays; culture assays quantified F-specific and somatic coliphages. Median LRVs were low (< 1.0) for plant viruses and generally higher (> 1.0) for adenovirus and crAssphage, consistent with predictions from a solids partitioning model. The fifth percentile LRVs that often drive regulatory determinations were < 0.5 for norovirus GI/GII. For conventional ac

SUBMITTER: Wang P 

PROVIDER: S-EPMC12446742 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature