Mechanical WWTP .06 MGD

Toxic Hit Recovery at a Mechanical Wastewater Treatment Plant

Wastewater treatment utilities receiving inputs from industrial and anthropogenic sources are highly susceptible to toxic waste inputs. Toxic loads are often sporadic and can be extremely devastating to the biomass in treatment facilities.

The book Wastewater Bacteria, by Michael Gerardi explains that toxicity impacts microbial cellular structure and activity (Figure 1).1 Toxicant presence in wastewater is known to inhibit biological treatment, specifically, biological oxygen demand (BOD) removal and nitrification. To restore efficient wastewater processing, wastewater operators can augment their systems with a concentrated and diverse consortium of wastewater microbiology. The following case study discusses the implementation of ProBiotic Scrubber® II (PBII) as seed to restart a mechanical wastewater treatment plant (MWTP) after a series of toxic hits.