Prof. Qing Liu
Shandong University of Science and Technology
Research area: Energy Catalysis
Title: coming soon...
Prof. Nur Islami
University of Riau, Indonesia
Research area: Hydrogeophysics for Environmental
Title: Application of geoelectrical resistivity method for the assessment of shallow aquifer quality in landfill areas
Abstarct: In this study, a valuable approach utilizing the relationship between select physical water and soil characteristics and geoelectrical resistivity data was used to recognize and trace groundwater contamination by using the geoelectrical resistivity data of a landfill area. It can reduce uncertainty in geoelectrical resistivity interpretation. By interpreting and calibrating the resistivity model with the lithology and physical characters of water samples, it was possible to identify the unique paths of landfill leachate that occurred throughout a shallow aquifer. The water physical property analysis showed that the landfill area was contaminated by a relatively high amount of total of dissolved solids (TDSs). A scatter plot of TDS values and directly measured resistivity showed that resistivity decreased with increasing TDSs. The movement direction of the landfill leachate in the aquifer system was clearly observed in a depth slice of the resistivity distribution. The aquifer is considered to be contaminated starting from the landfill zone and extending to the northeastern part of the study area.
Prof. Caixia Chen
East China University of Science and Technology
Research area: Thermal and Power Engineering; Environmental Engineering; Computational Fluid Dynamics
Title: Computational Fluid Dynamic Model of Moving Grate MSW Incinerators
Abstarct: We present a comprehensive two-fluid reacting model that integrates the gas-solid grate incineration and the gas turbulent combustion in one scheme for industrial MSW incinerators. Realistic grate geometry and real-time coupling of the fuel bed and the freeboard gas phase were realized. According to different treatments of the solid phase, the whole incinerator was divided into a packed bed region with adjacent fall region, and the over-bed furnace region (Fig.1). The kinetic theory of granular flow (KTGF) was introduced to describe the rheological properties of waste particles, and the Ergun model was used for the gas-solid drag. Thermal conversion of wastes was characterized by the heterogeneous reactions of moisture evaporation, devolatilization, char-O2 combustion and the homogeneous reactions of hydrocarbons combustion. The interactive two-way coupling bed model were validated by 3D full-incinerator results and on-site measurement data, and the effects of operating parameters on the bed incineration were extensively investigated. A variety of case studies for industrial Incinerators will be presented.