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Balancing disinfection efficiency and THM formation during chlorination: Theoretical considerations
Author(s) -
Chiang PenChi,
Ko YaWen,
Chang E. E.,
Lou JieChung
Publication year - 1997
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450750509
Subject(s) - trihalomethane , chlorine , contactor , water treatment , chemistry , chloroform , environmental engineering , environmental science , organic chemistry , thermodynamics , power (physics) , physics
A mathematical model has been developed to predict disinfection efficiency and trihalomethane (THM) formation during water chlorination. The model incorporates chlorine dose, total organic carbon (TOC) concentration, contact time, and geometric configuration of the chlorination chamber. Results indicate that the disinfection efficiency can be better controlled by modifying the geometric configuration of the chlorine contactor. In contrast, geometric configuration plays an insignificant role in controlling THM formation. The application of chlorine at about 1.0 mg/L appears to be the most economic and logical dose for the control of THM formation and the disinfection efficiency of the Liu‐Du water treatment plant under the operational conditions of conventional chlorination practices.