【摘要】 对多环芳烃主要去除机理及相关影响因素进行详尽综述。介绍多环芳烃来源、转移与源强,综述生物滞留池中土壤介质吸附、生物降解、植物吸收以及根际协助去除多环芳烃的机制以及影响去除效果的主要因素,包括含碳量、有机物组成、环境因子等的研究进展,指出了有待进一步探讨的问题。更多还原

【Abstract】 There are a large number of persistent organic pollutants( polycyclic aromatic hydrocarbons) in the stormwater runoff, and many researchers have studied the removal of polycyclic aromatic hydrocarbons in bioretention cells. However,as the construction of the China’s sponge city has just started,the relevant research has not yet been reported. Herein,the authors present a review of the main removal mechanism of polycyclic aromatic hydrocarbons and the influencing factors in bioretention cells. Firstly,the origin,transfer and source of polycyclic aromatic hydrocarbons are briefly introduced. Secondly,main removal mechanisms in the rhizosphere are elaborated including the soil media adsorption,degradation,plant uptake and stimulation of microbiological activity.Besides,main factors affecting the removal of the polycyclic aromatic hydrocarbons,such as the content of carbon,environmental factors and the composition of organic matter are concluded as well. Finally,current gaps for future research are discussed. In this paper,the research progress on the removal of polycyclic aromatic hydrocarbons in bioretention cells abroad can provide scientific support for the optimization of bioretention cells and the efficiency improvement of persistent organic pollutants in our country.更多还原