Simultaneous control of microorganisms and disinfection by-products by sequential chlorination / 生物医学与环境科学(英文)
Biomedical and Environmental Sciences
;
(12): 119-125, 2007.
Artigo
em Inglês
| WPRIM
| ID: wpr-249879
ABSTRACT
<p><b>OBJECTIVE</b>To introduce a new sequential chlorination disinfection process in which short-term free chlorine and chloramine are sequentially added.</p><p><b>METHODS</b>Pilot tests of this sequential chlorination were carried out in a drinking water plant.</p><p><b>RESULTS</b>The sequential chlorination disinfection process had the same or better efficiency on microbe (including virus) inactivation compared with the free chlorine disinfection process. There seemed to be some synergetic disinfection effect between free chlorine and monochloramine because they attacked different targets. The sequential chlorination disinfection process resulted in 35.7%-77.0% TTHM formation and 36.6%-54.8% THAA5 formation less than the free chlorination process. The poorer the water quality was, the more advantage the sequential chlorination disinfection had over the free chlorination.</p><p><b>CONCLUSION</b>This process takes advantages of free chlorine's quick inactivation of microorganisms and chloramine's low disinfection by-product (DBP) yield and long-term residual effect, allowing simultaneous control of microbes and DBPs in an effective and economic way.</p>
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Bactérias
/
Vírus
/
Microbiologia da Água
/
Água
/
Química
/
Cloraminas
/
Cloro
/
Desinfecção
/
Purificação da Água
/
Métodos
Idioma:
Inglês
Revista:
Biomedical and Environmental Sciences
Ano de publicação:
2007
Tipo de documento:
Artigo
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