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| 壳聚糖助凝作用及絮体分形维数研究 | |
| 引用本文： | 江汇,刘秉涛. 壳聚糖助凝作用及絮体分形维数研究[J]. 黑龙江大学自然科学学报, 2012, 0(4): 498-501,506 |
| 作者姓名： | 江汇 刘秉涛 |
| 作者单位： | 中国科学院城市环境研究所;华北水利水电学院环境与市政工程学院 |
| 基金项目： | 河南省科技厅基础与前沿技术研究计划资助项目(082300420260) |
| 摘 要： | 为能高效除浊又能去除水中有机污染物,将无机絮凝剂聚合硫酸铁与天然高分子絮凝剂壳聚糖协同使用,用于自来水厂的给水絮凝处理。考察了助凝剂壳聚糖投加量、壳聚糖分子量等因素对浊度和有机物去除效果的影响,通过电子显微镜和Image J图像处理软件,对絮体形态进行了分析。结果表明,在以黄河水为水源的自来水厂的给水絮凝处理中,以壳聚糖(CTS)作为聚合硫酸铁(PFS)的助凝剂,PFS投加35 mg·L-1,CTS投加0.15 mg·L-1时,混凝效果最好。絮体的形态分析表明,单加无机絮凝剂、无机絮凝剂/壳聚糖协同絮凝处理水样后絮体的分形维数分别为1.491 3和1.559 3,絮体大小和密实度,可以从形态学方面进行量化。 |
| 关 键 词： | 壳聚糖 聚合硫酸铁 助凝 絮体 分形维数 |
Effect of chitosan coagulation aid in flocculation treatment and fractal dimensions |
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| JIANG Hui,LIU Bing-tao. Effect of chitosan coagulation aid in flocculation treatment and fractal dimensions[J]. Journal of Natural Science of Heilongjiang University, 2012, 0(4): 498-501,506 | |
| Authors: | JIANG Hui LIU Bing-tao |
| Affiliation: | 1.Institute of Urban Environment,Chinese Academy of Sciences,Xiamen 361021,China;2.School of Environmental and Municipal Engineering,North China Institute of Water Conservancy and Hydroelectric Power,Zhengzhou 450011,China) |
| Abstract: | Use PFS and different molecular weights of chitosan as coagulant aid for treating Yellow River surface water.Electron microscope was used to observe flocs morphology and CTS coagulation aid morphological change,floc image with microscope camera system analysis,calculation of floc fractal dimension.It turned out that chitosan enhanced the flocculation treatment of the surface water of raw water of Yellow River when PFS dosage is 35 mg·L-1 and chitosan is 0.15 mg·L-1.Microscope and image analysis system of flocs morphology showed that fractal dimension of morphology of PFS and PFS/Chitosan were 1.491 3,1.559 3 respectively.Floc fractal dimension changes to better reflected the flocculation level and treatment effect for the establishment of floc fractal dimension number of changes in the coagulation control. |
| Keywords: | chitosan PFS coagulation aid flocs fractal dimension |
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