Manganese removal from the Qiantang River source water by pre-oxidation: A case study
Jian-wen ZHU, Zhen ZHANG, Xiao-min LI, Xin-hua XU, Da-hui WANG
Department of Environmental Engineering, Zhejiang University, Hangzhou 310027, China; Hangzhou Water Group Company Ltd., Hangzhou 310009, China; School of Bioscience, Taizhou University, Linhai 317000, China
Abstract We evaluated several different pre-oxidation treatments, namely the introduction of either potassium permanganate (KMnO4), chlorine (Cl2), or both to remove manganese (Mn) from the Qiantang River source water. Our results showed that Mn removal percentages were 12.7%, 71.0%, 17.4% and 58.7% when none of the oxidants, KMnO4 only, Cl2 only, or both oxidants were added, respectively. Furthermore, a field study showed that when the available Mn concentration in the source water was 0.14 mg/L, it could be reduced to less than 0.05 mg/L when a solution of KMnO4 (0.47 mg/L) was added as the oxidant.
Jian-wen ZHU, Zhen ZHANG, Xiao-min LI, Xin-hua XU, Da-hui WANG. Manganese removal from the Qiantang River source water by pre-oxidation: A case study. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2009, 10(3): 450-457.
