Volume 6, Issue 4, December 2018, Page: 100-106
Analysis on Water Quality Characteristics of Typical Black and Stinking River in Chengdu City by SWMM
Xintuo Chen, Institute of Water Environment, Chengdu Research Academy of Environmental Protection Science, Chengdu, China; Environmental Monitoring and Analysis Laboratory, Chengdu Research Academy of Environmental Protection Science, Chengdu, China
Jia She, Institute of Water Environment, Chengdu Research Academy of Environmental Protection Science, Chengdu, China; Institute of Environmental Models, Chengdu Research Academy of Environmental Protection Science, Chengdu, China
Chengyue Lai, Institute of Water Environment, Chengdu Research Academy of Environmental Protection Science, Chengdu, China; Environmental Monitoring and Analysis Laboratory, Chengdu Research Academy of Environmental Protection Science, Chengdu, China
Lin Chen, Institute of Water Environment, Chengdu Research Academy of Environmental Protection Science, Chengdu, China; Drinking Water Assessment and Research Group, Chengdu Research Academy of Environmental Protection Science, Chengdu, China
Yiyao Wang, Institute of Water Environment, Chengdu Research Academy of Environmental Protection Science, Chengdu, China
Ke Zhong, Institute of Water Environment, Chengdu Research Academy of Environmental Protection Science, Chengdu, China
Jiayang Chen, Chengdu Experimental Primary School, Chengdu, China
Zhaoli Wang, Institute of Water Environment, Chengdu Research Academy of Environmental Protection Science, Chengdu, China; Environmental Monitoring and Analysis Laboratory, Chengdu Research Academy of Environmental Protection Science, Chengdu, China
Received: Nov. 26, 2018;       Accepted: Dec. 18, 2018;       Published: Jan. 7, 2019
DOI: 10.11648/j.hyd.20180604.11      View  189      Downloads  50
Abstract
In this paper, based on Storm Water Management Model (SWMM) mechanism, referring to the model parameters of domestic and foreign related research achievements, combined with field monitoring data, a non-point source pollution load calculation model is constructed, and the corresponding parameters are calibrated. The pollution load and pollution change process of chemical oxygen demand (CODCr), ammonia nitrogen (NH3-N) and total phosphorus (TP) under different rainfall conditions were analyzed in the investigation area. The model calculated values are in good agreement with the actual measure results. Under different rainfall conditions, the maximum value of pollutants appeared in early and middle rainfall stage, while gradually decreased in latter, with the increase of rainfall, pollution of receiving water becomes greater, and the pollutant concentration shows a downward trend during rainfall process. Measured value of CODCr is higher than the simulated one, both decreased gradually with the rainfall, measured NH3-N concentration in mid-term rainfall increased slightly due to the uninterrupted direct emission of domestic sewage in this area, measured TP concentration in early stage of rainfall declined not obvious, but with the rainfall enhancement, various phosphorus compounds by erosion gradually dissolved finally into the river, partially offset by a dilution effect, as the subsequent rainfall carried over, total phosphorus pollutants continued to decline. While as impervious surface area goes on, both runoff and total pollutants increase.
Keywords
SWMM, Black and Stinking River, Non-Point Source Pollution, Pollution Load, Rainfall Runoff
To cite this article
Xintuo Chen, Jia She, Chengyue Lai, Lin Chen, Yiyao Wang, Ke Zhong, Jiayang Chen, Zhaoli Wang, Analysis on Water Quality Characteristics of Typical Black and Stinking River in Chengdu City by SWMM, Hydrology. Vol. 6, No. 4, 2018, pp. 100-106. doi: 10.11648/j.hyd.20180604.11
Copyright
Copyright © 2018 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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