Factors influencing ultraviolet disinfection performance part II: Association of coliform bacteria with wastewater particles

被引：89

作者：

Emerick, RW ^{[1
]}

Loge, FJ ^{[1
]}

Thompson, D ^{[1
]}

Darby, JL ^{[1
]}

机构：

[1] Univ Calif Davis, Dept Civil & Environm Engn, Davis, CA 95616 USA

来源：

WATER ENVIRONMENT RESEARCH | 1999年 / 71卷 / 06期

关键词：

coliform bacteria; disinfection; particles; UV disinfection;

D O I：

10.2175/106143097X122004

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A technique is described for quantifying the number of particles with embedded coliform bacteria in wastewater samples. This technique was applied to eight different wastewater samples collected from eight significantly different treatment processes (five variations of the activated-sludge process, a trickling filter, an aerated lagoon, and a facultative lagoon). For all treatment process types that did not use chemical coagulants, total number of particles with embedded coliform bacteria correlated linearly with number of residual coliform bacteria following high doses of UV light. Lagoon treatment processes led to the formation of fewer bacteria-associated particles than either thr acrtivated-sludge or trickling-filter processes. Chemical coagulants showed a potential to significantly reduce the inactivation fraction of coliform bacteria associated with particles.

引用

页码：1178 / 1187

页数：10