YANG Zhi-Yong 1, HU Yong 1, 2, LU Chui-Yu 1, YU Ying-Dong 1

1. State Key Laboratory of Water Cycle Simulation and Regulation, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
2. School of Environmental Science and Engineering, Donghua University, Shanghai 201620, China

Abstract: The EIA of secure landfill is confronted with uncertainties caused by pollution way, boundary condition and controlling equation. With the secure landfill located in Hangzhou Bay as an example, this paper established several models with input parameters expressing the source and degree of uncertainties. MODFLOW and MT3DMS were used for numerically solving the models. In the place where the groundwater flow is vertical-dominated, flow field scenarios affect pollutant concentrations in the groundwater and areas impacted by the landfill to some degree. Therefore, flow field scenarios of such landfill EIA could be simplified into two scenarios: high flow year and normal year. The pollutant concentration in the groundwater is up to the leachate load of the landfill. Meanwhile, the organic matter’s concentration is influenced by adsorption reaction items, while the heavy metal’s concentration is affected by hydraulic dispersion parameters significantly.

Key words: simulating scenario, groundwater, EIA, hazardous solid wastes, landfill disposal

Published in: Journal of China Institute of Water Resources and Hydropower Research (Vol. 12 No. 1, 2014)