Study on Influencing Factors of Bio-electrochemical System for Water Softening

• 作者: Han Yingjie Zhang Jiqiang
• 来源期刊: 气象与环境研究：英文版
• 学科: 地球科学
• 关键词: Water SOFTENING Bio-electrochemical system Influencing FACTORS CONDITION OPTIMIZATION
• 年，卷（期）: 2017,（6）
• 页码范围: 54-55
• 页数: 2页
• 分类号: P

摘要

Bio-electrochemical system (BES) was used to soften hard water, and effects of ion species, electrode area and influent concentration on the performance of BES to soften hard water were analyzed. The results showed that it was more easy to remove Mg2+ from the hard water than Ca2+. Increasing electrode area could enhance the performance of BES to soften hard water. When the amount of added graphite at the anode was 150 g, the removal efficiency of Ca2+ increased by 18.1%. The increase of influent concentration at the anode and the cathode could improve the softening efficiency of hard water by BES. As COD concentration at the anode and N03~ -N concentration at the cathode increased to 2 000 and 300 mg/L, the removal efficiency of Ca2+ rose by 36.1% and 9.4% respectively.