Advances in Civil Engineering / 2020 / Article / Tab 2 / Research Article
Numerical Evaluation and Management Suggestions for Heavy Metal Pollution Risks in a Sludge Landfill: A Case Study from Fuyong Landfill, Shenzhen, China Table 2 Parameters of the calculation model.
Parameters Solidified sludge Natural silt Sand Silty clay Hydraulic conductivity (m/s) 1.0 × 10−7 1.0 × 10−8 1.850 × 10−5 1.1 × 10−8 Porosity (%) 50.0 60.0 33.0 53.0 VG–Parameters a (m−1 ) 1.0 1.0 5.75 1.0 n (–) 1.2 1.2 1.6 1.2 θ s (–) 0.541 0.541 0.541 0.541 θ r (–) 0.2 0.2 0.0 0.2 Longitudinal dispersivity (m) 0.1 0.1 1.0 0.1 Diffusion coefficient (×10−10 m2 /s) Cd 8.90 8.90 8.90 8.90 Cu 7.90 7.90 7.90 7.90 Ni 0.59 0.59 0.59 0.59 Pb 3.60 3.60 3.60 3.60 Zn 3.30 3.30 3.30 3.30 Retardation factor (–) Cd 2.0 2.0 1.0 2.0 Cu 3.3 3.3 1.0 3.3 Ni 2.0 2.0 1.0 2.0 Pb 30.0 30.0 1.0 30.0 Zn 3.0 3.0 1.0 3.0