Work

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

Year: 2015

Type: article

Abstract: 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.

Source: International Journal of Environmental Research and Public Health

DOI: 10.3390/ijerph120202215

Authors: Wenting Zhu, Qian Niu, Ruibin Zhang, Rui Ye, Xin Qian, Yu Qian

Institutions: State Key Laboratory of Pollution Control and Resource Reuse, Nanjing University

Language: English

Topic: Constructed Wetlands for Wastewater Treatment

Subfield: Waste Management and Disposal

Field: Environmental Science

Domain: Physical Sciences

SDGs: Clean water and sanitation, Sustainable cities and communities

Open Access status: gold

Estimated APC paid: $3,016