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2008 1

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副产物 1

化学安全性 1

活性炭 1

藻毒素 1

饮用水 1

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Characterization of chlorine dioxide as disinfectant for the removal of low concentration microcystins

Mingsong WU, Junli HUANG, Yuling ZHANG, Shijie YOU, Shaofeng LI, Zhilin RAN, Yu TIAN

《环境科学与工程前沿（英文）》 2012年第6卷第1期页码 75-81 doi: 10.1007/s11783-011-0331-5

摘要： Microcystins, which represents one kind of cancerogenic organic compounds, is abundant in eutrophication water. The effects of reaction factors on chlorine dioxide (ClO ) for removal of low-concentration Microcystin-LR, Microcystin-RR, and Microcystin-YR in water as well as the reaction mechanisms was investigated by using enzyme-linked immunosorbent assay (ELISA) kit and gas chromatography–mass spectrometry (GC-MS). The results showed that MC-LR, MC-RR, and MC-YR could be efficiently decomposed by ClO . The degradation efficiency was shown positively correlated to the concentration of ClO and reaction time; while the effect of reaction temperature and pH is slight. The kinetic constants and activation energies of the reaction of MC-LR, MC-RR, and MC-YR with ClO are determined as 459.89, 583.15, 488.43 L·(mol·min) and 64.78, 53.01, 59.15 kJ·mol , respectively. As indicated by high performance liquid chromatography mass spectrometer (HPLC-MS) analysis, degradation should be accomplished via destruction of Adda group by oxidation, with the formation of dihydroxy substituendums as end products. This study has provided a fundamental demonstration of ClO serving as oxidizing disinfectant to eliminate microcystins from raw water source.

关键词： disinfection chlorine dioxide microcystins reaction mechanism

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活性炭深度处理技术的化学安全性及影响因素研究

陈卫,王磊磊,林涛,罗彬

《中国工程科学》 2008年第10卷第5期页码 32-37

摘要：

活性炭技术是净化微污染源水的有效手段，但其化学安全性值得关注。研究发现，活性炭出水中微量有机污染物仍有一定含量，AOC浓度仍达211 μg/L，并可检测到新的有机化合物，去除效果受炭种、源水水质和工艺运行等因素影响；活性炭对消毒副产物的去除效果不稳定，生物活性炭对卤乙酸前质（HAAs）表现出较好去除效果，但对三卤甲烷前质（THMs）的去除效果有限，去除效果与活性炭类型和工艺运行参数等因素有关；活性炭技术可以去除大部分臭氧化副产物的溴酸盐和甲醛，但水厂用纯氧生产臭氧时，活性炭的处理情况有所不同。活性炭易于吸附微囊藻毒素，微生物对藻毒素也有降解作用，仍应注意源水水质情况。另外，活性炭能有效去除致突变活性物质，即使在活性炭吸附TOC饱和后，仍能显著地去除致突变活性物质。

关键词：饮用水活性炭化学安全性副产物藻毒素