摘要
N,N-二甲基甲酰胺(DMF)作为有机溶剂在化工领域得到了广泛的应用。本研究通过对小试升流式厌氧污泥床(UASB)反应器处理高浓度DMF工业废水的实验进行评估。实验中,UASB在有限有机负荷率(OLR)范围1.57~9.59 kg COD/(m^(3)·d)下运行,将水力停留时间(HRT)由48 h缩短至8 h,去除效率优良,达到95%以上。利用经验方程对DMF废水处理过程的CO_(2)排放量和生物能源产生量进行了估算和评估,相比传统的活性污泥(CAS)工艺,UASB工艺具有明显优势,能够回收能源并减少CO_(2)排放,其正净能量潜力为0.061 kW·h/m^(3),同时还显著减少了6.18 kg/m^(3)的CO_(2)排放量。本研究的结果证明了UASB工艺在处理DMF废水方面的潜力和可行性,并促进了碳中和理念在废水处理中的推广。
N,N-dimethylformamide(DMF)is widely used as an organic solvent in the chemical industry.This study aimed to assess the treatment of high-concentration DMF-containing industrial wastewater using a lab-scale up-flow anaerobic sludge blanket(UASB)reactor.The UASB reactor operated within a limited range of organic loading rates(OLR)of 1.57~9.59 kg COD/(m^(3)·d),with the hydraulic retention time(HRT)reduced from 48 hours to 8 hours.The reactor demonstrated excellent removal efficiency,exceeding 95%.CO_(2) emissions and bio-energy production during the treatment of DMF wastewater were estimated and evaluated using empirical equations.Compared to the conventional activated sludge(CAS)process,the UASB process exhibited significant advantages in terms of energy recovery and CO_(2) emission reduction.It achieved a positive net energy potential of 0.061 kW·h/m^(3) and substantially reduced CO_(2) emissions by 6.18 kg/m^(3).The results of this study provide evidence of the potential and feasibility of the UASB process for DMF waste treatment,while also contributing to the promotion of the carbon neutrality concept in wastewater treatment.
作者
张新政
邓梓萱
张涛
胡勇
陈荣
李玉友
李大鹏
潘杨
孔哲
ZHANG Xinzheng;DENG Zixuan;ZHANG Tao;HU Yong;CHEN Rong;LI Yuyou;LI Dapeng;PAN Yang;KONG Zhe(School of Environmental Science and Engineering,Suzhou University of Science and Technology,Suzhou 215009,China;School of Environmental Science and Engineering,Tongji University,Shanghai 200092,China;School of Environmental Science and Engineering,Nanjing Tech University,Nanjing 211816,China;School of Environmental and Municipal Engineering,Xi′an University of Architecture and Technology,Xi′an 710055,China;Graduate School of Engineering,Tohoku University,Sendai 980-8579,Japan)
出处
《能源环境保护》
2024年第1期159-166,共8页
Energy Environmental Protection
基金
国家自然科学基金资助项目(52100100)
江苏省自然科学基金资助项目(BK20210871)
苏州市姑苏领军创新创业人才资助项目(ZXL2022498)
江苏省研究生实践创新项目(SJCX23_1719)。
