Effect of Distribution System Materials on bacterial regrowth

Autor:	Anne Sandvig, Anne K. Camper, A.J. Capuzzi, Jonathan A. Clement, Kristin Brastrup, Catherine M. Spencer
Rok vydání:	2003
Předmět:	Total organic carbon biology Disinfectant Biofilm chemistry.chemical_element General Chemistry biology.organism_classification Polyvinyl chloride chemistry.chemical_compound chemistry Environmental chemistry Chlorine Effluent Carbon Bacteria Water Science and Technology
Zdroj:	Journal AWWA. 95:107-121
ISSN:	1551-8833 0003-150X
Popis:	To assess the interactions between pipe materials, organic carbon levels, and disinfectants, studies using annular reactors with ductile-iron, polyvinyl chloride (PVC), epoxy, and cement-lined coupons were carried out in the laboratory and at four field sites. Laboratory studies used biologically treated water with and without 0.2 mg/L residual free chlorine or monochloramine, in the presence or absence of 0.5 or 2.0 mg/L humic substances. In the lab studies, the type of disinfectant did not lead to significant differences in effluent and biofilm counts. Increases in carbon led to greater numbers of biofilm and effluent organisms, with the effect most pronounced on iron. Regardless of carbon level, PVC systems typically had the lowest numbers of bacteria, whereas iron had the highest. Cement and epoxy were intermediate. Depending on the site, field studies showed that iron had the highest number of bacteria or there was no difference in materials.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9d70aacbc7677b2793512a17d3b6d3c6 https://doi.org/10.1002/j.1551-8833.2003.tb10412.x Zobrazit plný text záznamu Plný text