Application of QUAL2K Model to Assess Ecological Purification Technology for a Polluted River

作者：Zhu, Wenting; Niu, Qian; Zhang, Ruibin; Ye, Rui; Qian, Xin^*; Qian, Yu

来源：International Journal of Environmental Research and Public Health, 2015, 12(2): 2215-2229.

DOI：10.3390/ijerph120202215

• WATER-QUALITY IMPROVEMENT
• FLOW CONSTRUCTED WETLANDS
• NITROGEN REMOVAL
• NUTRIENT REMOVAL
• PHOSPHORUS REMOVAL
• VERTICAL FLOW
• WASTE-WATER
• OPTIMIZATION
• REMEDIATION
• MACROPHYTES

Industrialization and urbanization have caused water pollution and ecosystem degradation, especially in urban canals and rivers in China; accordingly, effective water quality improvement programs are needed. In this study, the Tianlai River in Jiangsu, China was taken as a research site, and a combination of ecological purification technologies consisting of biological rope, phytoremediation, and activated carbon were applied in a laboratory-scale study to examine degradation coefficients under dynamic water conditions. Coefficients were then input into the QUAL2K model to simulate various hypothetical scenarios and determine the minimum density of ecological purification combination and hydraulic retention time (HRT) to meet Grade V or IV of the China standard for surface water. The minimum densities for Grade V and IV were 1.6 times and 2 times the experimental density, while the minimum HRTs for Grade V and IV were 2.4 day and 3 day. The results of this study should provide a practical and efficient design method for ecological purification programs.

• 出版日期2015-2
• 单位南京大学; 污染控制与资源化研究国家重点实验室