电刺激强化厌氧降解N-甲基吡咯烷酮的研究  

Study on enhanced anaerobic degradation of N-methylpyrrolidone by electrical stimulation

作　　者：应汉超 李辉 陈丹 熊姗姗 江心白 李健生[1] 孙秀云[1] 韩卫清[1] 刘晓东[1] 沈锦优[1] Ying Hanchao;Li Hui;Chen Dan;Xiong Shanshan;Jiang Xinbai;Li Jiansheng;Sun Xiuyun;Han Weiqing;Liu Xiaodong;Shen Jinyou(School of Environmental and Biological Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;Anhui Hongxing Electrical Polytron Technologies Inc.,Hefei 231635,China)

机构地区：[1]南京理工大学环境与生物工程学院,江苏南京210094 [2]安徽红星机电科技股份有限公司,安徽合肥231635

出　　处：《南京理工大学学报》2022年第2期245-252,共8页Journal of Nanjing University of Science and Technology

基　　金：国家自然科学基金(52100092)。

摘　　要：为了解决传统厌氧生物处理对废水中N-甲基吡咯烷酮(N-methylpyrrolidone,NMP)去除效果较差的问题,该文提出了一种上流式电刺激微生物系统用于NMP废水的强化降解。对比研究了电化学系统、厌氧生物系统和电刺激微生物系统对NMP的去除效果,并且探究了关键因素包括外加电压、进水NMP负荷和电子供体用量对NMP去除效果的影响。结果表明,电刺激微生物系统对NMP的去除效果最好,在优化的反应条件下,电刺激微生物系统中NMP去除率可达到93%,总有机碳去除率接近90%。最后通过高效液相色谱-质谱对降解产物进行分析,推测NMP在电刺激微生物系统中的厌氧降解途径。通过对细菌的分类分析,发现电刺激促进了功能微生物的生长。电刺激微生物系统在强化难降解有机污染物去除方面具有广阔的应用前景。In order to solve the problem of poor removal of N-methylpyrrolidone(NMP)in wastewater by traditional anaerobic biological threatment,an up-flow electricity-stimulated microbial system was developed for enhanced biodegradation of NMP.Electrochemical system,anaerobic biological system and electricity-stimulated microbial system were set up and the NMP degradation performances of these systems were compared.Besides,the influence of key factors on the removal efficiency of NMP,including applied voltage,influent loading rate and electron donor dosage,was further studied.Among the three systems,the electricity-stimulated microbial system showed the highest degradation efficiency on NMP,in which system the removal efficiency of NMP and total organic carbon was about 93%and 90%under the optimal reaction conditions.In addition,the degradation products were analyzed by liquid chromatography-mass spectrometry,and the anaerobic degradation pathway of NMP in the electricity-stimulated microbial system was speculated.According to the bacterial taxonomic analysis,it was found that electrical stimulation facilitated the growth of functional microorganisms.The results suggested that electricity-stimulated microbial system has a promising future in the enhanced removal of refractory organic contaminants.

关 键 词：N-甲基吡咯烷酮 电刺激 厌氧系统 强化降解 微生物群落 

分 类 号：X703[环境科学与工程—环境工程]