School of Environmental Science and Engineering, Suzhou University of Science and Technology
School of Environmental Science and Engineering, Tongji University
School of Environmental Science and Engineering, Nanjing Tech University
School of Environmental and Municipal Engineering, Xi′an University ofArchitecture and Technology
Graduate School of Engineering,Tohoku University

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/ ( m3 ·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 CO2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 CO2排放,其正净能量潜力为 0.061 kW·h/ m3,同时还显著减少了 6.18 kg/ m3的 CO2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 in⁃dustry. This study aimed to assess the treatment of high - concentration DMF - containing industrialwastewater using a lab-scale up-flow anaerobic sludge blanket (UASB) reactor. The UASB reactor op⁃erated within a limited range of organic loading rates (OLR) of 1.57 ~ 9.59 kg COD/ (m3·d), withthe hydraulic retention time (HRT) reduced from 48 hours to 8 hours. The reactor demonstrated excel⁃lent removal efficiency, exceeding 95%. CO2 emissions and bio-energy production during the treatmentof DMF wastewater were estimated and evaluated using empirical equations. Compared to the conven⁃tional activated sludge (CAS) process, the UASB process exhibited significant advantages in terms of en⁃ergy recovery and CO2 emission reduction. It achieved a positive net energy potential of 0.061 kW·h/ m3and substantially reduced CO2 emissions by 6.18 kg / m3. The results of this study provide evidence ofthe potential and feasibility of the UASB process for DMF waste treatment, while also contributing tothe promotion of the carbon neutrality concept in wastewater treatment.

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)

张新政, 邓梓萱, 张涛, 等. 升流式厌氧污泥床处理二甲基甲酰胺废水研究[J]. 能源环境保护, 2024, 38(1): 159-166.

ZHANG Xinzheng, DENG Zixuan, ZHANG Tao, et al. Study on the treatment of N,N-dimethylformamide-con⁃taining wastewater by up-flow anaerobic sludge blanket reactor[J]. Energy Environmental Protection, 2024, 38(1): 159-166.