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Wastewater managers and operators want confidence that their facility’s chemical program will not negatively impact their biological treatment system. Whether you are a chemical supplier or product end user, EBS can assess chemical additives for impacts on microbiological activity.

Utilizing respirometry, EBS can continuously measure oxygen uptake or gas production, and therefore BOD removal, from a biomass exposed to different controlled conditions. To complement these results, we can also use Flow Cytometry, which measures the proportion of live and dead cells in each sample using nucleic acid stains. This dual approach provides both a metabolic and cellular view of microbial health under chemical stress.

In the case study below, three different doses of biocide used in upstream processes were added into reactor bottles containing the facility’s activated sludge biomass and typical influent at three different concentrations, in addition to the treatment plant biomass and aeration basin influent.