期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Comparison of different combined treatment processes to address the source water with high concentration of natural organic matter during snowmelt period 被引量:2
1
作者 Pengfei Lin Xiaojian Zhang +3 位作者 Jun Wang Yani Zeng Shuming Liu Chao Chen 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2015年第1期51-58,共8页
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 co... 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. 展开更多
关键词 Natural organic matter coagulation magnetic ion-exchange resin Ozonation Activated carbon Drinking water
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部