| 南水北调丹江口水库原水有机物分子组成规律及其强化混凝处理的效能对比 |
| 摘要点击 2462 全文点击 1356 投稿时间：2014-08-03 修订日期：2014-10-15 |
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| 中文关键词 南水北调 分子量分布 亲疏水性 强化混凝 消毒副产物生成潜能(DBPFP) |
| 英文关键词 South-to-North Water Diversion Project molecular weight distribution hydrophobic or hydrophilic performance enhanced coagulation disinfection by-products formation potential(DBPFP) |
| 作者 | 单位 | E-mail | | 程拓 | 同济大学污染控制与资源化研究国家重点实验室, 长江水环境教育部重点实验室, 上海 200092 | 1095783916@qq.com | | 徐斌 | 同济大学污染控制与资源化研究国家重点实验室, 长江水环境教育部重点实验室, 上海 200092 | tjwenwu@tongji.edu.cn | | 朱贺振 | 同济大学污染控制与资源化研究国家重点实验室, 长江水环境教育部重点实验室, 上海 200092 | | | 夏圣骥 | 同济大学污染控制与资源化研究国家重点实验室, 长江水环境教育部重点实验室, 上海 200092 | | | 楚文海 | 同济大学污染控制与资源化研究国家重点实验室, 长江水环境教育部重点实验室, 上海 200092 | | | 胡广新 | 郑州升达经贸管理学院信息工程系, 郑州 451191 | |
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| 中文摘要 |
| 以取自南水北调中线工程的丹江口水库原水作为研究对象,考察了丹江口水库原水中有机物的分子量大小和亲疏水性分子组成规律,并确定了其所适用的强化混凝工艺条件. 分离试验表明,丹江口原水中有机物主要以小分子量形式存在. 其中,<1000组分的溶解性有机碳(DOC)和UV254所占比例最大,分别为39.98% 和39.10%,且此区间还具有最高的三卤甲烷生成潜能(THMFP)和含氮消毒副产物生成潜能(N-DBPFP). 亲疏水性方面,原水中弱疏水性组分含量最高,疏水性有机物的比例用DOC表征时超过80%. 强疏水性组分含量最低但是强疏水性组分的THMFP最大,占总量的57.31%,而各组分的N-DBPFP则相差不大. 混凝试验表明,当采用聚合硫酸铁(PFS,4 mg·L-1)和聚丙烯酰胺(PAM,0.4 mg·L-1)处理丹江口原水时,强化混凝效果最好,可实现较为有效的去除浊度(76.33%)、DOC(25.57%)、UV254 (37.78%)及THMFP (23.16%). 本研究成果可为南水北调河南受水区既有水厂升级改造与工艺的优化运行提供有效的理论和技术支持. |
| 英文摘要 |
| The best enhanced coagulation conditions for the raw water of Danjiangkou Reservoir of South-to-North Water Diversion Project and the molecular weights as well as hydrophobicity composition of Natural organic matter (NOM) in the water were investigated in this study. The results showed that the NOM in the raw water of Danjiangkou Reservoir of South-to-North Water Diversion Project was mainly composed of the fraction with a molecular weight of <1000 and transphilic components. Dissolved organic carbon (DOC, 39.98%) and UV254 (39.10%) were the major components. And the fraction with a molecular weight of <1000 had the highest contents of THMFP and N-DBPFP. In the raw water of Danjiangkou Reservoir, the sum of transphilic and hydrophobic fractions was up to 80%, and the hydrophobic fraction was the minimum contributor of the NOM, but the THMFP of the hydrophobic fraction had the highest percentage. And when the raw water of Danjiangkou Reservoir was treated using polymeric ferric sulfate (PFS, 4 mg·L-1) and poly-acrylamide (PAM, 0.4 mg·L-1), the optimal removal rates of turbidity, DOC, UV254 and THMFP were 76.33%, 25.57%, 37.78% and 23.16%, respectively. The results of this paper can provide theoretical and technological basis for upgrading of the process and operation optimization of original drinking water treatment plants in the intake area of South-to-North Water Diversion Project. |
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