Association between haloacetic acid degradation and heterotrophic bacteria in water distribution systems

WATER RESEARCH

卷:43

Article

Tung, Hsin-hsin¹  Xie, Yuefeng F.² 

[1] Natl Taiwan Univ, Grad Inst Environm Engn, Taipei 10673, Taiwan

[2] Penn State Harrisburg, TL177 Sci & Technol, Middletown, PA 17057 USA

关键词: Biodegradation;    Disinfection byproduct;    Distribution system;    Haloacetic acid;    Heterotrophic bacteria;    Chlorine residual;   

DOI  :  10.1016/j.watres.2008.11.041

来源: Elsevier

【 摘 要 】

The occurrences of trihalomethanes (THMs), haloacetic acids (HAAS) and heterotrophic bacteria were monitored in five small water systems over a nine-month period to investigate the association between HAA degradation and heterotrophic bacteria populations. The sampling sites were chosen to cover the entire distribution network for each system. An inverse association between heterotrophic bacteria and HAA concentrations was found at some locations where chlorine residuals were around or less than 0.3 mg L-1. At other sample locations, where chlorine residuals were higher (over 0.7 mg L-1), no HAA reduction was observed. A high heterotrophic bacteria count accompanied with a low chlorine residual could be used as an indicator for HAA degradation in distribution systems. (C) 2008 Elsevier Ltd. All rights reserved.

【 授权许可】

Free