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| 1 | Comparison of different combined treatment processes to address the source water with high concentration of natural organic matter during snowmelt period显示文摘The source water in one forest region of the Northeast China had very high natural organic matter(NOM) concentration and heavy color during snowmelt period. The efficiency of five combined treatment processes was compared to address the high concentration of NOM and the mechanisms were also analyzed. Conventional treatment can hardly remove dissolved organic carbon(DOC) in the source water. KMn O4pre-oxidization could improve the DOC removal to 22.0%. Post activated carbon adsorption improved the DOC removal of conventional treatment to 28.8%. The non-sufficient NOM removal could be attributed to the dominance of large molecular weight organic matters in raw water, which cannot be adsorbed by the micropore upon activated carbon. O3+ activated carbon treatment are another available technology for eliminating the color and UV254 in water. However, its performance of DOC removal was only 36.4%, which could not satisfy the requirement for organic matter. The limited ozone dosage is not sufficient to mineralize the high concentration of NOM. Magnetic ion-exchange resin combined with conventional treatment could remove 96.2%of color, 96.0% of UV254 and 87.1% of DOC, enabling effluents to meet the drinking water quality standard. The high removal efficiency could be explained by the negative charge on the surface of NOM which benefits the static adsorption of NOM on the anion exchange resin. The results indicated that magnetic ion-exchange resin combined with conventional treatment is the best available technology to remove high concentration of NOM. | Pengfei Lin Xiaojian Zhang Jun Wang Yani Zeng Shuming Liu Chao Chen | 2015 | Journal of Environmental Sciences2015，27，1： | 2 |
| 2 | 铵化磁性凹土树脂的制备与表征显示文摘利用表面负载的方法将有机化磁性凹土(Fe3O4-ATP)与苯乙烯、二乙烯苯等制备出磁性凹土树脂(ATP-Resin)。然后对磁性凹土树脂进行多巴胺改性,制备出铵化磁性凹土树脂(Resin-NH2)。表征了Resin-NH2样品的形貌、结构以及表面积,研究了Resin-NH2对重金属离子(Cu2+)的吸附性能。结果表明:铵化后的磁性凹土树脂的比表面积是原有的1.87倍,对Cu2+的饱和吸附能力也从原有的84.745mg/g提高到了157.625mg/g,这表明改性后的树脂增强了其对Cu2+的除去能力,这种铵化磁性凹土树脂对微污染水源水中Cu2+的去除有十分好的应用前景。 | 卢兰珍 马喜君 | 2017 | 科技创新与应用2017，7，2： | 1 |
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