Fang Chengran, Mao Hongzhi, Long Yuyang
Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province, School of Environmental and Natural Resources, Zhejiang University of Science and Technology Hangzhou 310023 China
Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University Hangzhou 310018 China.
RSC Adv. 2019 Nov 27;9(66):38807-38813. doi: 10.1039/c9ra08323e. eCollection 2019 Nov 25.
The removal of di--butyl phthalate (DBP) and di(2-ethylhexyl) phthalate (DEHP) with dissolved organic matter (DOM) was studied in a laboratory scale anaerobic/anoxic/oxic reactor for landfill leachate treatment. The removal rate was up to 98.0% for DBP and 78.2% for DEHP, which was related to humification of DOM (, the aromaticity and molecular weight (MW) of humic substances in landfill leachate). The dissolved organic carbon (DOC) was mostly humic acid and fulvic acid in the fraction of 1-100 kDa MW, indicating strong aromaticity and a high DBP/DEHP concentration. With complete removal of the fraction, the removal rate of DBP/DEHP was also high. The positive correlation of the DOC and DBP/DEHP concentration in raw leachate and the effluent from each reactor showed that the interaction between DOM and DBP/DEHP facilitated the removal of organic pollutants.
在实验室规模的厌氧/缺氧/好氧反应器中，研究了溶解有机物（DOM）对邻苯二甲酸二丁酯（DBP）和邻苯二甲酸二（2-乙基己基）酯（DEHP）的去除情况，用于处理垃圾渗滤液。DBP的去除率高达98.0%，DEHP的去除率为78.2%，这与DOM的腐殖化有关（即垃圾渗滤液中腐殖物质的芳香性和分子量（MW））。溶解有机碳（DOC）在分子量为1-100 kDa的部分中主要是腐殖酸和富里酸，表明具有很强的芳香性和较高的DBP/DEHP浓度。随着该部分的完全去除，DBP/DEHP的去除率也很高。原渗滤液和各反应器出水的DOC与DBP/DEHP浓度呈正相关，表明DOM与DBP/DEHP之间的相互作用促进了有机污染物的去除。
