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A Novel Disinfection Device Based on Ionic Membrane Electrolysis Technology: Biological Efficacy Assay and Optimization of Operating Conditions *
Author(s) -
Jia Yannan,
Gao Zhanyi,
Ding Kunlun,
Wu Xiaomei,
Song Weikun,
Li Xiaoqin
Publication year - 2020
Publication title -
irrigation and drainage
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 38
eISSN - 1531-0361
pISSN - 1531-0353
DOI - 10.1002/ird.2464
Subject(s) - electrolysis , electrolyte , water disinfection , water treatment , electrolytic cell , environmental science , waste management , volumetric flow rate , chemistry , environmental engineering , pulp and paper industry , engineering , electrode , physics , quantum mechanics
Abstract A novel disinfection device based on ionic membrane electrolysis technology was developed in this study. To test the feasibility of the newly developed system in rural and emergency water supply, biological assay for the electrolytic system was carried out. The biological efficacy results show that a high concentration of coliform bacteria can be effectively inactivated both in synthetic contaminated water and natural source water, while the chemical indicators of water quality changed only slightly after disinfection. To reduce the operating cost of the system, the electrolyte feeding method and flow rate of the electrolytic cell were optimized. Results of operating conditions show that the operation cost can be reduced by changing the electrolyte feeding method from pump‐driven to gravity‐driven. As the flow rate was 2.4 L ·h −1 , the system has the lowest operation cost, which was 93% lower than adding commercial sodium hypochlorite solution. This paper suggests promising applications of the novel disinfection device based on ionic membrane electrolysis technology in drinking water disinfection or emergency water treatment. © 2020 International Commission for Irrigation and Drainage