Abstract
This paper suggests a large-scale three-dimensional numerical simulation method to investigate the fluorine pollution near a slag yard. The large-scale three-dimensional numerical simulation method included an experimental investigation, laboratory studies of solute transport during absorption of water by soil, and large-scale three-dimensional numerical simulations of solute transport. The experimental results showed that the concentrations of fluorine from smelting slag and construction waste soil were well over the discharge limit of 0.1 kg/m3 recommended by Chinese guidelines. The key parameters of the materials used for large-scale three-dimensional numerical simulations were determined based on an experimental investigation, laboratory studies, and soil saturation of survey results and back analyses. A large-scale three-dimensional numerical simulation of solute transport was performed, and its results were compared to the experiment results. The simulation results showed that the clay near the slag had a high saturation of approximately 0.9, consistent with the survey results. Comparison of the results showed that the results of the numerical simulation of solute transport and the test results were nearly identical, and that the numerical simulation results could be used as the basis for groundwater environmental evaluation.
Highlights
IntroductionFluorine concentration may reach contamination levels in the groundwater as a result of specific hydrogeochemical processes due to human activities
The test results showed that the clay in the bottom of the slag yard absorbed some fluorine
The results showed that the concentrations of fluorine were well over the
Summary
Fluorine concentration may reach contamination levels in the groundwater as a result of specific hydrogeochemical processes due to human activities. Elevated concentrations of fluorine in groundwater, exceeding the World Health Organization (WHO) limit of 0.0015 kg/m3 in drinking water, have been detected in many parts of the world, such as India [2], China [3], Tanzania [4], and others. To obtain an understanding of solute transport over longer time periods and under more complicated liner conditions, numerical modelling of solute transport in saturated–unsaturated fluid flow was conducted using the finite element method (FEM) [6,7,8,9]. Research of FEM simulation of groundwater fluoride concentration was rare
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
