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This study investigated the efficacy of a three-chamber electro-dialysis (ED) system for desalinating domestic water with initial chloride and hardness levels of 760 mg/L and 840 mg/L, respectively. The ED system employed cation and anion exchange membranes along with graphite electrodes powered by a 5 A, 32 V direct current supply. The applied current started at 1.87 A and decreased to 1.14 A over a 120 min period. The results demonstrated a 71% reduction in chloride and a 69% reduction in hardness. These findings highlight the potential of ED systems for efficient desalination across various applications, including domestic and industrial sectors. The technology presents a promising solution for addressing water quality issues by effectively reducing chloride and hardness levels. The study’s outcomes underscore the viability of ED systems in tackling water desalination challenges, offering an effective approach to improving water quality. This research contributes to the growing body of knowledge on water treatment technologies and provides valuable insights for future developments in the field of water desalination and purification.

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Quality Improvement of a Piped Water Supply with High Hardness and Chloride by Electrodialysis Process

  • 会议论文

  • 发表日期：

    2026年

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  • Abhra Saha,
  • Subhadip Pramanik,
  • Tanmoy Bir,
  • Budhodeb Biswas,
  • Debabrata Mazumder,
  • Chanchal Majumder

摘要

This study investigated the efficacy of a three-chamber electro-dialysis (ED) system for desalinating domestic water with initial chloride and hardness levels of 760 mg/L and 840 mg/L, respectively. The ED system employed cation and anion exchange membranes along with graphite electrodes powered by a 5 A, 32 V direct current supply. The applied current started at 1.87 A and decreased to 1.14 A over a 120 min period. The results demonstrated a 71% reduction in chloride and a 69% reduction in hardness. These findings highlight the potential of ED systems for efficient desalination across various applications, including domestic and industrial sectors. The technology presents a promising solution for addressing water quality issues by effectively reducing chloride and hardness levels. The study’s outcomes underscore the viability of ED systems in tackling water desalination challenges, offering an effective approach to improving water quality. This research contributes to the growing body of knowledge on water treatment technologies and provides valuable insights for future developments in the field of water desalination and purification.