Discussion on runoff purification technology of highway bridge deck based on water quality safetySheng-guang Tan, Xue-xin Liu, Guo-ping Zou, Xin-zhu Xiong and Shuang-cheng TaoE3S Web Conf., 38 (2018) 03043DOI: https://doi.org/10.1051/e3sconf/20183803043