Simulation for non-point source pollution based on QUAL2E in the Jinghe River, Shaanxi Province, China

• Main Authors: Wang Jucui, Huo Aidi, Hu Anyan, Zhang Xuezhen, Wu Yanqing
• Format: Article
• Language: Spanish
• Published: Instituto Mexicano de Tecnología del Agua 2017-08-01
• Series: Tecnología y ciencias del agua
• Subjects: QUAL2E, degradation coefficient, source/sink term, non-point-source pollution
• Online Access: http://www.revistatyca.org.mx/ojs/index.php/tyca/article/view/1312
• ISSN: 0187-8336; 2007-2422

Wang, J., Huo, A., Hu, A., Zhang, X., & Wu, Y. (March-April, 2017). Simulation for non-point source pollution based on QUAL2E in the Jinghe River, Shaanxi Province, China. Water Technology and Sciences (in Spanish), 8(2), 117-126. Water pollution in river basins is significantly influenced by point-source and non-point-source pollutants. Compared with point-source pollutants, the identification and quantification of non-point-source pollutants are critical but difficult issues in water environmental pollution studies. The Jinghe River is one of the main tributaries of the Weihe River. However, the non-point-source pollution of this river is not well understood. In order to analyze the sources of pointand non-point loads to river water, the river water quality model QUAL2E and Principal Component Analysis (PCA) & Factor Analysis (FA) were applied simultaneously to calculate the point- and non-point-source loads of ammonia nitrogen and nitrate nitrogen, respectively, in dry and wet seasons from 2002 to 2007. The results show that NO3 - -N can be associated with point-source pollution, such as domestic sewage in dry seasons, but non-point-source pollution generated by precipitation in wet seasons. NH4 +-N can be associated with point-source pollution throughout the year. The methods applied in this research provide reliable results on non-point-source pollution caused by storm runoff.