短程硝化-共代谢组合工艺处理晚期垃圾渗滤液中试实验研究  

Experimental Study on Treatment of Late Landfill Leachate byShort-cut Nitrification and Co-metabolism Combination Process

作　　者：姚磊 李伟 李曹乐[1] 马涛 赵琛 张列宇[1] YAO Lei;LI Wei;LI Caole;MA Tao;ZHAO Chen;ZHANG Lieyu(State Entironment Protection Key laboratory of Sinulation and Control of Croundwater pollutio,Chinese Research Academy of Enwironmental Seiences,Biejing 100012,China;Key laboratory of Poyang Lake Environment and Resoure liliation,Ministry of Education,School of Resources Enironment and Chemical Engineering,Nanchang University,Nanchang 330031,China)

机构地区：[1]中国环境科学研究院国家环境保护地下水污染过程模拟与控制重点实验室,北京100012 [2]南昌大学资源环境与化工学院鄱阳湖环境与资源利用教育部重点实验室,江西南昌330031

出　　处：《水处理技术》2020年第12期89-93,99,共6页Technology of Water Treatment

基　　金：国家重点研发计划(2018YFC1901401)。

摘　　要：采用短程硝化和共代谢组合工艺处理晚期垃圾渗滤液中难降解有机物和高浓度氨氮,利用紫外吸收光谱法和三维荧光光谱法对降解机理进行研究。结果表明:添加草酸基质使COD去除率提高了9.29%,促进了晚期垃圾滤液中难降解有机物的降解,控制溶解氧在1.5~5.0 mg/L时能很好地实现并维持短程硝化。紫外吸收光谱表明:经短程硝化-共代谢组合工艺处理后晚期垃圾渗滤液中有机物的芳香性逐渐减小,芳香环上的羧基、羟基、羰基等取代基转化为脂肪族官能团。三维荧光光谱表明:短程硝化-共代谢组合工艺能够去除晚期垃圾渗滤液中的类色氨酸、类酪氨酸等易降解组分,也能够去除类富里酸难降解组分,处理后的出水更难生物降解。The combination of short-cut nitrification and co-metabolism techniques was used to treat refractory organic matter and high-concentration ammonia nitrogen in late landfill leachate, the degradation mechanism was studied by ultraviolet absorption spectroscopy and three-dimensional fluorescence spectroscopy. The COD removal rate increased by 9.29% by adding oxalic acid substrate, which promoted the degradation of refractory organics in late landfill leachate,Short-cut nitrification can be well realized and maintained when dissolved oxygen was controlled at1.5~5.0 mg/L.Ultraviolet absorption spectra showed that the aromaticity of organic compounds in landfill leachate decreased gradually after short-cut nitrification and co-metabolism combined process,carboxyl、 hydroxylandcarbonyl substituents in aromatic rings were converted into aliphatic functional groups.Three-dimensional fluorescence spectroscopy showed that short-cut nitrification and co-metabolism combined process can remove the easily degradable components such as tryptophan and tyrosine in the late landfill leachate, and also remove the refractory components of fulvic acid, the treated effluent is more difficult to biodegrade.

关 键 词：短程硝化 共代谢 晚期垃圾渗滤液 难降解有机物 类富里酸 

分 类 号：X703[环境科学与工程—环境工程]