基于金属元素正矩阵分解法的台湾北部某高污染河流污染源危害排序

IF 4.6 3区 环境科学与生态学 Q2 ENGINEERING, ENVIRONMENTAL
P. Hsieh, Huan-Chun Lin, Gen-Shuh Wang, Yuan-Jeng Hsu, Yijia Chen, Tzu-Hui Wang, Renxin Wang, Chun-Yu Kuo, Di-Wen Wang, H. Liao, Chang-Fu Wu
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引用次数: 0

摘要

改善水质是世界范围内的一个关键问题。然而,水质指数估计中使用的一般参数(即温度、pH、浊度、总固体、粪便大肠菌群、溶解氧、生化需氧量、磷酸盐和硝酸盐)无法识别工业废水的污染。本研究采用正矩阵因子分解(PMF)模型对河流污染热点的污染源进行了调查。设计了台湾北部一条高污染河流的两阶段取样系统。一期在河流沿岸分布采样点,监测河流污染物的空间变化。污染热点是根据两个指数确定的,即金属元素的总浓度和金属指数(MI)。在第二阶段,连续30天每天两次从热点地区采集河水样本,以监测河流污染物的时间变化。在监测期间获得了金属元素的来源剖面。然后使用PMF模型对II期样品进行因子分解。通过Pearson相关系数和层次分类,将从PMF模型中检索到的因素分布进一步分配给工业类别。结果表明,污染源主要为裸印制电路板,占污染热点铜的92%。就与健康影响相关的11种金属的MI分配而言,BPCB在高污染事件中贡献了91%的MI。总体而言,MI分配提供了污染水平与人类健康之间的联系。这为决策者提供了证据,证明对BPCB废水的监管是控制铜浓度从而改善研究区域水质的有效手段。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Hazard ranking of wastewater sources in a highly polluted river in northern Taiwan by using positive matrix factorization with metal elements
Improving water quality is a critical issue worldwide. However, the general parameters (i.e., temperature, pH, turbidity, total solids, fecal coliform, dissolved oxygen, biochemical oxygen demand, phosphates, and nitrates) used in water quality index estimations are unable to identify pollution from industrial wastewater. This study investigated pollution sources at a river pollution hotspot by using the positive matrix factorization (PMF) model. A two-phase sampling collection along a highly polluted river in northern Taiwan was designed. The sampling spots were distributed along the river in Phase I to monitor the spatial variation of river pollutants. A pollution hotspot was determined based on two indices, namely the summed concentrations of metal elements and a metal index (MI). In Phase II, the river water samples were collected from the hotspot twice daily over 30 consecutive days to monitor the temporal variation of river pollutants. Source profiles of metal elements were obtained during the monitoring period. The Phase II samples were then factorized using the PMF model. Factor profiles retrieved from the PMF model were further assigned to industrial categories through Pearson correlation coefficients and hierarchical classification. The results indicated that the main pollution source was bare printed circuit boards (BPCB), which contributed up to 92% of the copper in the pollution hotspot. In terms of MI apportionment of 11 metals related to health effects, BPCB contributed 91% of the MI in high pollution events. Overall, the MI apportionment provides linkages between pollution level and human health. This is an evidence for policymakers that the regulation of the effluents of BPCB is an effective means to controlling copper concentrations and thus improving water quality in the study area.
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来源期刊
CiteScore
8.00
自引率
2.00%
发文量
47
审稿时长
30 weeks
期刊介绍: The primary goal of Sustainable Environment Research (SER) is to publish high quality research articles associated with sustainable environmental science and technology and to contribute to improving environmental practice. The scope of SER includes issues of environmental science, technology, management and related fields, especially in response to sustainable water, energy and other natural resources. Potential topics include, but are not limited to: 1. Water and Wastewater • Biological processes • Physical and chemical processes • Watershed management • Advanced and innovative treatment 2. Soil and Groundwater Pollution • Contaminant fate and transport processes • Contaminant site investigation technology • Soil and groundwater remediation technology • Risk assessment in contaminant sites 3. Air Pollution and Climate Change • Ambient air quality management • Greenhouse gases control • Gaseous and particulate pollution control • Indoor air quality management and control 4. Waste Management • Waste reduction and minimization • Recourse recovery and conservation • Solid waste treatment technology and disposal 5. Energy and Resources • Sustainable energy • Local, regional and global sustainability • Environmental management system • Life-cycle assessment • Environmental policy instruments
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