RANGang,XIEKang,ZHAOXiao-yong,et al.Comprehensive Evaluation of Manganese Ion Removal from Water in the Whole Process of Water Purification Plant[J].China Water & Wastewater,2022,38(23):43-48.
Comprehensive Evaluation of Manganese Ion Removal from Water in the Whole Process of Water Purification Plant
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第23期
Page:
43-48
Column:
Date of publication:
2022-12-01
- Keywords:
- water purification plant; the whole process; manganese removal; quartz sand; pre-oxidation; coagulation
- Abstract:
- To solve the problem of high manganese ion concentration in the influent of water purification plants, the performance of manganese removal in the whole process was analyzed by actual operation data. When the oxidant and coagulant dosages were 7 mg/L and 22 mg/L in the pre-oxidation coagulation stage, the average removal rate of manganese ion was 45% under the condition of high manganese ion concentration in influent in 2020. However, the manganese ion concentration in effluent was still as high as 0.07 mg/L. The operating parameters of quartz sand filtration were close to the empirical and theoretical values recommended by the nation. When the influent manganese ion concentration was 0.093 mg/L, its actual removal rate was still as high as 85.4%. The highest removal rate of manganese ion of 93.03% in the whole process of the water purification plant was obtained when the influent manganese ion concentration was 0.172 mg/L.
Last Update:
2022-12-01