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http://dx.doi.org/10.3795/KSME-B.2017.41.3.183

A Study on Control Disinfection By-products in High Sodium Hypochlorite Generation  

Cho, Haejin (K-water)
Shin, Hyunsoo (Techwin)
Ko, Sungho (School of Mechanical Engineering, Chungnam Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.41, no.3, 2017 , pp. 183-189 More about this Journal
Abstract
Sodium hypochlorite used in water disinfection processes is generally in the production of chlorine to 0.8％. As the dose of chlorine increases, disinfection by-products (Chlorate) also increase simultaneously and exceed water quality standards. In this study, the electrolytic cell of a sodium hypochlorite generator (12％ chlorine) was adjusted to control the production of the disinfection by-products. As a result, it was possible to reduce Chlorate concentrations by more than 95％ by adjusting the pH of the electrolytic cell from 1.53 to 4.2 (normal pH of the electrolytic cell). As a low current is required to obtain these results, a 15％ improvement in the efficiency of the positive electrode is also observed. For the development of High Sodium Hypochlorite Generation can be used in a safe sodium hypochlorite solution, which is expected to contribute to improvement in the safety of the disinfection process.
Keywords
Control Disinfection By-products; Drinking Water Treatment; Disinfection Process; Electrolytic Cell; High Sodium Hypochlorite Generation;
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