Modeling Biofilm Growth Rates in a Premise Plumbing Pipe without Disinfectant Residuals DOI
Emily Clements, Cristian Picioreanu, Caitlin R. Proctor

et al.

ACS ES&T Water, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

Premise plumbing systems without disinfectant residuals can develop thick biofilms, increasing health risks from biofilm-associated opportunistic pathogens. Yet existing models do not treat drinking water biofilms as true with thicknesses and substrate gradients within the biofilm, or consider effects of substrates leaching pipes into biofilm. We developed a one-dimensional model nonchlorinated premise pipe to study factors affecting biofilm growth rates. Short stagnation times biodegradable favored over planktonic. Biofilm rates were predicted be 70% higher when period decreased 12 6 h 80% lower increased 48 h. Higher incoming concentrations planktonic bacteria rates, although only by 3.5% concentration 100 10,000 cells/mL. Smaller diameter overall due greater availability bulk nutrients However, smaller also reduction in available nutrients. Overall, this research identified key promoting unchlorinated systems, which could help more effective management strategies.

Language: Английский

Modeling Biofilm Growth Rates in a Premise Plumbing Pipe without Disinfectant Residuals DOI
Emily Clements, Cristian Picioreanu, Caitlin R. Proctor

et al.

ACS ES&T Water, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

Premise plumbing systems without disinfectant residuals can develop thick biofilms, increasing health risks from biofilm-associated opportunistic pathogens. Yet existing models do not treat drinking water biofilms as true with thicknesses and substrate gradients within the biofilm, or consider effects of substrates leaching pipes into biofilm. We developed a one-dimensional model nonchlorinated premise pipe to study factors affecting biofilm growth rates. Short stagnation times biodegradable favored over planktonic. Biofilm rates were predicted be 70% higher when period decreased 12 6 h 80% lower increased 48 h. Higher incoming concentrations planktonic bacteria rates, although only by 3.5% concentration 100 10,000 cells/mL. Smaller diameter overall due greater availability bulk nutrients However, smaller also reduction in available nutrients. Overall, this research identified key promoting unchlorinated systems, which could help more effective management strategies.

Language: Английский

Citations

1