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Optimizing Chloramine Disinfection for the Control of Nitrification
Author(s) -
Lieu Nancy I.,
Wolfe Roy L.,
III Edward G. Means
Publication year - 1993
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.1002/j.1551-8833.1993.tb05942.x
Subject(s) - chloramine , nitrification , nitrifying bacteria , chlorine , ammonia , nitrite , environmental chemistry , chemistry , nitrobacter , oxidizing agent , microbiology and biotechnology , environmental engineering , pulp and paper industry , environmental science , biology , nitrogen , nitrate , biochemistry , organic chemistry , engineering
Previous studies have shown that nitrification of chloraminated drinking water can have deleterious effects on water quality. These studies also showed that the cause of nitrification is the oxidation of ammonia (used to form chloramines) to nitrite by autochthonous nitrifying bacteria. In this study, bench‐scale experiments were conducted with fully treated drinking water to determine the optimum chloramine application conditions necessary to prevent nitrification in the distribution system. These experiments examined the survival and regrowth of nitrifying bacteria after exposure to three chloramine dosages, three weight ratios of chlorine to ammonia‐nitrogen, three temperatures, and two contact times. The results indicate that the control of ammonia‐oxidizing bacteria is highly dependent on temperature.