You are here:
Chlorine Disinfection of Wet Weather Managed Flows
Citation:
BOCZEK, L., C. JOHNSON, AND M. MECKES. Chlorine Disinfection of Wet Weather Managed Flows. In Proceedings, WATER ENVIRONMENT FEDERATION TECHNICAL EXHIBITION AND CONFERENCE, CHICAGO, IL, October 18 - 22, 2008. Water Environment Federation, Alexandria, VA, ., (2008).
Impact/Purpose:
to share information
Description:
Blending is a practice used in the wastewater industry to deal with wet weather events when the hydraulic capacity of the treatment facility could be compromised. Blending consists of primary wastewater treatment plant effluent, partially bypassing secondary treatment, and then being recombined or “blended” with disinfected secondary effluents before disinfection and discharge into the receiving waters. Bench scale blending experiments were performed in this study with different ratios of primary to secondary treated wastewater (5:5, 3:7, and 1:9). Blended effluents were disinfected with sodium hypochlorite at two different concentrations and evaluated for microbiological indicators. Results indicate that disinfection of blended waste water is sufficient to reduce indicators such as fecal coliforms; however, bacterial viruses are more resistant and persist in samples with higher concentrations of primary effluent.
