Effect of pre-oxidation with chlorine dioxide on the formation of trihalomethanes and haloacetic acids in a drinking water system



Document title: Effect of pre-oxidation with chlorine dioxide on the formation of trihalomethanes and haloacetic acids in a drinking water system
Journal: Revista politécnica
Database: PERIÓDICA
System number: 000435448
ISSN: 1900-2351
Authors: 1
1
Institutions: 1Universidad de Antioquia, Facultad de Ingeniería, Medellín, Antioquia. Colombia
Year:
Season: Ene-Jun
Volumen: 12
Number: 22
Pages: 9-20
Country: Colombia
Language: Inglés
Document type: Artículo
Approach: Aplicado, descriptivo
English abstract The reaction between disinfectants and aquatic organic matter generate disinfection by-products (DBPs). DBPs are of concern in the drinking water because they cause damage to health. This investigation aims to determine the effect of treatment of pre-oxidation with ClO2, in a conventional process at laboratory scale, on the formation of the DBPs: trihalomethanes (THMs) and haloacetic acids (HAAs). Trials were performed with water from a reservoir that supplies a drinking water conventional treatment plant during different climatic periods due to its influence on the nature of the organic matter. Applying 0.3 mg/L ClO2 and the optimal dose of coagulant to remove organic matter, gave the best results, 37 µg/L of THMs and 22 µg/L of HAAs, except in the dry season. It was found that higher doses of ClO2 increased DPBs. The optimal doses of coagulant and of ClO2 must be carefully defined
Disciplines: Ingeniería
Keyword: Ingeniería química,
Agua potable,
Materia orgánica,
Desinfectantes,
Dióxido de cloro,
Subproductos,
Trihalometanos,
Acidos haloacéticos
Keyword: Chemical engineering,
Drinking water,
Organic matter,
Disinfectants,
Chlorine dioxide,
Byproducts,
Trihalomethanes,
Haloacetic acids
Full text: http://biblat.unam.mx/hevila/Revistapolitecnica/2016/vol12/no22/1.pdf