Groundwater quality assessment and pollution source apportionment in an intensely exploited region of northern China
| Autor: | Qianqian Zhang, Huiwei Wang, Liang Zhu, Yanchao Wang, Mingnan Yang |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Pollution
China Health Toxicology and Mutagenesis media_common.quotation_subject 0208 environmental biotechnology 02 engineering and technology 010501 environmental sciences 01 natural sciences Industrial wastewater treatment Rivers Groundwater pollution Water Quality Environmental Chemistry Groundwater 0105 earth and related environmental sciences media_common Hydrology General Medicine Contamination 020801 environmental engineering Wastewater Environmental science Sewage treatment Water quality Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Environmental science and pollution research international. 24(20) |
| ISSN: | 1614-7499 |
| Popis: | Deterioration in groundwater quality has attracted wide social interest in China. In this study, groundwater quality was monitored during December 2014 at 115 sites in the Hutuo River alluvial-pluvial fan region of northern China. Results showed that 21.7% of NO3- and 51.3% of total hardness samples exceeded grade III of the national quality standards for Chinese groundwater. In addition, results of gray relationship analysis (GRA) show that 64.3, 10.4, 21.7, and 3.6% of samples were within the I, II, IV, and V grades of groundwater in the Hutuo River region, respectively. The poor water quality in the study region is due to intense anthropogenic activities as well as aquifer vulnerability to contamination. Results of principal component analysis (PCA) revealed three major factors: (1) domestic wastewater and agricultural runoff pollution (anthropogenic activities), (2) water-rock interactions (natural processes), and (3) industrial wastewater pollution (anthropogenic activities). Using PCA and absolute principal component scores-multivariate linear regression (APCS-MLR), results show that domestic wastewater and agricultural runoff are the main sources of groundwater pollution in the Hutuo River alluvial-pluvial fan area. Thus, the most appropriate methods to prevent groundwater quality degradation are to improve capacities for wastewater treatment and to optimize fertilization strategies. |
| Databáze: | OpenAIRE |
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