Source identification of accidental water pollution in a tidal river network based on a water environment model and database

CHEN Zhengxia; DING Yi; MAO Xuhui; WANG Zheng; JIA Haifeng

doi:10.16511/j.cnki.qhdxxb.2017.21.034

Journal of Tsinghua University(Science and Technology) >

2017 , Vol. 57 >Issue 11: 1170 - 1178

DOI: https://doi.org/10.16511/j.cnki.qhdxxb.2017.21.034

ENVIRONMENTAL SCIENCE AND ENGINEERING

Source identification of accidental water pollution in a tidal river network based on a water environment model and database

CHEN Zhengxia ,
DING Yi ,
MAO Xuhui ,
WANG Zheng ,
JIA Haifeng

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1. School of Environment, Tsinghua University, Beijing 100084, China;
2. Shanghai Urban Planning & Design Research Institute, Shanghai 200040, China

Received date: 2017-01-03

Online published: 2017-11-15

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Abstract

The source of accidental water pollution can be accurately and quickly identified using a water environment model and database. The Foshan section of the Xijiang and Beijiang Rivers was taken as an example to build a EFDC (environmental fluid dynamics code) hydrodynamic and WASP (water quality analysis simulation program) water quality model. The WASP water quality model included the WASP-EUTRO model for normal pollutants and the WASP-TOXI model for toxic pollutants. The EFDC-WASP model sorts information on the pollutant risk source at each automatic monitoring section to establish a toxic and normal pollutant source identification database. A hypothetical scenario having the Shakou monitoring station in the Chancheng district measuringa high Cr⁶⁺ concentration was taken as an example with 3 possible pollutant emission situations identified through a database query. Initial loads for each situation 1-3 were estimated according to a first-order kinetics equation, with the location and load for each situation then calculated by the model. The pollutant source was quickly and accurately identified.

Key words： tidal river network; environmental fluid dynamics code (EFDC) model; water quality analysis simulation program (WASP) model; database; accidental water pollution; source identification

Cite this article

CHEN Zhengxia , DING Yi , MAO Xuhui , WANG Zheng , JIA Haifeng . Source identification of accidental water pollution in a tidal river network based on a water environment model and database[J]. Journal of Tsinghua University(Science and Technology), 2017 , 57(11) : 1170 -1178 . DOI: 10.16511/j.cnki.qhdxxb.2017.21.034

References

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