Recently, the latest research result by a research team lead by Prof. Weifang Ma from the College of Environmental Science and Engineering “Full profile contamination process simulation and risk prediction of synthetic musk from reclaimed water receiving river to groundwater via vadose zone: A case study of Chaobai River”was published in Chemosphere (Impact factor=8.943). The first author is Ding Rui, a graduate student of the College of Environmental Science and Engineering and the first completion unit is Beijing Forestry University.
Due to the shortage of water resources, reclaimed water played a significant role in maintaining river ecological base flow and water environment. However, popular fragrance additives such as synthetic musk and personal care products, particularly galaxolide (HHCB), have caused widely concern due to its high detection frequency, accumulative property and low dose ecotoxicity. Therefore, understanding contamination process simulation and risk prediction of synthetic musk from reclaimed water receiving river to groundwater via vadose zone is of great significance for the study of pollution diffusion prevention and control.
Prof. Weifang Ma’s research team simulated and predicted the spatio-temporal distribution and risk evolution of HHCB with a coupled model of HYDRUS-GMS based on Python. The result shows that the vertical migration rate of HHCB in the aeration zone was 1.543 times of radial diffusion due to the gravity-driven. The continuous accumulation of HHCB increased the ecological and health risk in vadose zone and groundwater. Therefore, the HYDRUS-3D-GMS coupled risk entropy model provided an effective tool to simulate the full profile of contamination risk diffusion process caused by micro polluted surface water infiltration, and to assess the pollution prevention effect of engineering measures.
This study was supported by the National Natural Science Foundation of China (No. 51678052),the Beijing Science and Technology Commission (No. Z201100008220013).