Abstract:A pilot-scale experiment was employed to evaluate a magnetic ion exchange resin for the removal of organics from raw water. Treatment with the magnetic ion exchange resin (MIEX) was effective in removing organic carbon. 82% UV254, 66%DOC and 50%CODMn removals were obtained respectively by the use of MIEX alone. Combination of MIEX and coagulation-settlement process enhanced removal of organics, algae and turbidity.90% UV254, 71%CODMn and 99% algae cells were removed by the combined process. Using MIEX as a pre-treatment before coagulation could reduce 56% PAC demand. Fractionation and molecular weight distribution were also investigated. MIEX process was shown to be effective in removing both hydrophobic and hydrophilic DOC, while conventional process could only remove hydrophobic DOC. MIEX process was highly effective at removing small molecular weight organics and coagulation was shown to preferentially remove large molecular weight organics. MIEX process followed by coagulation could reduce 88%THMFP and 87%HAAFP.
陈卫, 韩志刚, 刘成, 许航, 袁恒. 磁性离子交换树脂对原水中有机物去除效能的研究[J]. 中国环境科学, 2009, 29(7): 707-712.
CHEN Wei, HAN Zhi-Gang, LIU Cheng, XU Hang, YUAN Heng. Removal efficiency of organic matter in raw water with a magnetic ion exchange resin. . CHINA ENVIRONMENTAL SCIENCECE, 2009, 29(7): 707-712.