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Minimizing chlorate ion formation
Storage tanks that contain liquod bleach should be periodically flushed and cleaned to minimize buildup of a residual chlorate ion concentration.
The treatment of drinking water with either NaOCl or Ca(OCl)2 is a source of chlorate ion (ClO3−) in finished water. In basic solution, liquid bleach (NaOCl) decomposition is a second‐order process. The decomposition of OCl− involves chlorite ion (ClO2−) as a low‐concentration intermediate. The reaction of ClO2− to form ClO3− is a fast process, and the ClO2− in liquid bleach is at a concentration at least 200 times less than the OCl− concentration. The formation of oxygen from decomposing OCl− is a slower side reaction (<10 percent).
Minimizing chlorate ion formation
Storage tanks that contain liquod bleach should be periodically flushed and cleaned to minimize buildup of a residual chlorate ion concentration.
The treatment of drinking water with either NaOCl or Ca(OCl)2 is a source of chlorate ion (ClO3−) in finished water. In basic solution, liquid bleach (NaOCl) decomposition is a second‐order process. The decomposition of OCl− involves chlorite ion (ClO2−) as a low‐concentration intermediate. The reaction of ClO2− to form ClO3− is a fast process, and the ClO2− in liquid bleach is at a concentration at least 200 times less than the OCl− concentration. The formation of oxygen from decomposing OCl− is a slower side reaction (<10 percent).
Minimizing chlorate ion formation
Gordon, Gilbert (author) / Adam, Luke (author) / Bubnis, Bernard (author)
Journal ‐ American Water Works Association ; 87 ; 97-106
1995-06-01
10 pages
Article (Journal)
Electronic Resource
English
Storage Tanks , Decomposition , Chemicals , Chlorine , pH
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