TAOHui,GUYing,LINTao,et al.Fe2+/PMS System for Simultaneous Removal of Manganese and Organic Matter from Combined Polluted Raw Water[J].China Water & Wastewater,2023,39(15):64-69.
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Fe2+/PMS System for Simultaneous Removal of Manganese and Organic Matter from Combined Polluted Raw Water

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第39卷 Number: 第15期 Page: 64-69 Column: Date of publication: 2023-08-01
Author(s):
TAO　Hui1; 2;  GU　Ying2; 3;  LIN　Tao1; 2;  JIANG　Fu-chun4;  ZHANG　Xue4
（1. Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakers ， Hohai University， Nanjing 210098， China； 2. College of Environment， Hohai University， Nanjing 210098， China； 3. Nanjing Water Group， Nanjing 210002， China； 4. Suzhou Water Supply Co. Ltd.， Suzhou 215124， China）
Keywords:
ferrous;  peroxymonosulfate;  combined pollution;  manganese;  natural organic matter;  simultaneous removal
Abstract:
To achieve simultaneous removal of manganese and natural organic matter from combined polluted raw water, the removal pathway and performance of ferrous/peroxymonosulfate (Fe2+/PMS) system were investigated. When the Mn2+ concentration in combined polluted raw water increased from 0 to 1.0 mg/L, the removal rates of DOC and UV254 in the Fe2+/PMS system increased by 7.39% and 3.58%, respectively, and the manganese concentration in effluent ranged from 0.01 μg/L to 0.79 μg/L, indicating that the system could be used for simultaneous removal of manganese and natural organic matter from combined polluted raw water. The mechanism analysis showed that the presence of Mn2+ promoted the Fe2+/Fe3+ cycle, enhanced the formation of free radicals and promoted the formation of Fe3+, and its oxidation product MnO2 had a good coagulation performance. The kinetic analysis showed that Mn2+ enhanced the coagulation of Fe2+/PMS system mainly at the slow reaction stage, thus improved the removal efficiency of organic matter.
Last Update: 2023-08-01