Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Association of coliform, bacteria with wastewater particles: impact of operational parameters of the activated sludge process
Autore:
Loge, FJ; Emerick, RW; Ginn, TR; Darby, JL;
Indirizzi:
Washington State Univ, Dept Civil & Environm Engn, Pullman, WA 99164 USA Washington State Univ Pullman WA USA 99164 nm Engn, Pullman, WA 99164 USA ECO LOGIC Consulting Engineers, Roseville, CA 95661 USA ECO LOGIC Consulting Engineers Roseville CA USA 95661 ville, CA 95661 USA Univ Calif Davis, Dept Civil & Environm Engn, Davis, CA 95616 USA Univ Calif Davis Davis CA USA 95616 & Environm Engn, Davis, CA 95616 USA
Titolo Testata:
WATER RESEARCH
fascicolo: 1, volume: 36, anno: 2002,
pagine: 41 - 48
SICI:
0043-1354(200201)36:1<41:AOCBWW>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
ULTRAVIOLET-LIGHT DISINFECTION; DRINKING-WATER; SECONDARY EFFLUENTS; CHLORINATION; INACTIVATION; SURVIVAL; CARBON;
Keywords:
particle associated coliform bacteria; disinfection; activated sludge;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: Loge, FJ Washington State Univ, Dept Civil & Environm Engn, POB 642910, Pullman, WA99164 USA Washington State Univ POB 642910 Pullman WA USA 99164 WA99164 USA
Citazione:
F.J. Loge et al., "Association of coliform, bacteria with wastewater particles: impact of operational parameters of the activated sludge process", WATER RES, 36(1), 2002, pp. 41-48

Abstract

The fraction of particles with associated coliform bacteria (PAC) in the activated sludge process was evaluated using a 16S rRNA oligonucleotide probe specific to the family Enterobacteriaceae. The PAC was found to decline exponentially with increasing mean cell residence times (MCRTs). The factorsinfluencing the formation of PAC, identified with simplified mass balance relationships, are the concentration of particles, the concentration of dispersed (non-particle associated) coliform bacteria, and the MCRT. The concentration of dispersed coliform bacteria was found to decline with increasing MCRTs, The rate of decline was greater than the typical half-life attributed to endogenous decay, suggesting that other factors (e.g., predation by protozoa) influence the concentration of dispersed coliform. bacteria, and subsequently the formation of PAC. Given that the association of targeted organisms with particles adversely impacts the performance of a disinfectionsystem, studies targeted at the fate of organisms other than coliform bacteria in the activated sludge process are of paramount importance in assessing the health risks of post-disinfected effluents. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 16/02/20 alle ore 21:02:18