Two-dimensional numerical and eco-toxicological modeling of chemical spills

doi:10.1007/s11783-009-0020-9

Front Envir Sci Eng Chin

2009, Vol. 3

Issue (2) : 178-185 https://doi.org/10.1007/s11783-009-0020-9

RESEARCH ARTICLE

Two-dimensional numerical and eco-toxicological modeling of chemical spills

Suiliang HUANG¹(

), Yafei JIA², Sam S. Y. WANG²

1. Numerical Simulation Group for Water Environment, Key Laboratory of Pollution Processes and Environmental Criteria of Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China; 2. National Center for Computational Hydroscience and Engineering, The University of Mississippi, Oxford, MS 38677, USA

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Abstract

The effects of chemical spills on aquatic non-target organisms were evaluated in this study. Based on a review of three types of current eco-toxicological models of chemicals, i.e., ACQUATOX model of the US-EPA, Hudson River Model of PCBs, and critical body residual (CBR) model and dynamic energy budget (DEBtox) model, this paper presents an uncoupled numerical eco-toxicological model. The transport and transformation of spilled chemicals were simulated by a chemical transport model (including flow and sediment transport), and the mortalities of an organism caused by the chemicals were simulated by the extended threshold damage model, separately. Due to extreme scarcity of data, this model was applied to two hypothetical cases of chemical spills happening upstream of a lake. Theoretical analysis and simulated results indicated that this model is capable of reasonably predicting the acute effects of chemical spills on aquatic ecosystems or organism killings.

Keywords chemical spills acute effects aquatic ecosystem eco-toxicological modeling

Corresponding Author(s): HUANG Suiliang,Email:slhuang@nankai.edu.cn

Issue Date: 05 June 2009

Cite this article:

Suiliang HUANG,Yafei JIA,Sam S. Y. WANG. Two-dimensional numerical and eco-toxicological modeling of chemical spills[J]. Front Envir Sci Eng Chin, 2009, 3(2): 178-185.

URL:

https://academic.hep.com.cn/fese/EN/10.1007/s11783-009-0020-9
https://academic.hep.com.cn/fese/EN/Y2009/V3/I2/178

Fig.1 Mesh lines and schematic water columns

Fig.2 Bed topography of Ross R. Barnett Reservoir and simulated velocities

Fig.3 Distribution of spilled pentachlorophenol concentrations and mortality distribution of at the end of the 4.8 h

Fig.4 Distribution of spilled pentachlorophenol concentrations and mortality distribution of at the end of the 12 h

Fig.5 Distribution of spilled pentachlorophenol concentrations and mortality distribution of at the end of the 5 d

Fig.6 Distribution of spilled chlorpyrifos concentrations and mortality distribution of at the end of the 4.8 h

Fig.7 Distribution of spilled chlorpyrifos concentrations and mortality distribution of at the end of the 12 h

Fig.8 Distribution of spilled chlorpyrifos concentrations and mortality distribution of at the end of the 5 d

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