在 UASB 反应器中进行不同废物的厌氧共消化。
Anaerobic co-digestion of different wastes in a UASB reactor.
机构信息
Biochemical and Bioenergy Engineering Research Laboratory, Department of Chemical Engineering, Maulana Azad National Institute of Technology, Bhopal 462 003, India.
Biochemical and Bioenergy Engineering Research Laboratory, Department of Chemical Engineering, Maulana Azad National Institute of Technology, Bhopal 462 003, India; Advanced Analytical and Simulation Research laboratory, Department of Chemical Engineering, Maulana Azad National Institute of Technology, Bhopal 462 003, India; Nano-engineered materials for Environmental Problems, Centre for Discovery and Innovation, City College of New York, 10031, CUNY, USA.
出版信息
Waste Manag. 2018 Jul;77:545-554. doi: 10.1016/j.wasman.2018.05.007. Epub 2018 May 16.
Anaerobic co-digestion has made a greater impact on the biogas production from mixing different type of waste. In this research, sewage sludge (SS) and cow manure (CM), was used as a primary waste along with kitchen waste (KW), yard waste (YW), floral waste (FW) and dairy wastewater (DWW) as co-substrate for anaerobic digestion. Mixtures with a ratio of 1:2 ratio is fed into a single stage up-flow anaerobic sludge blanket (UASB) reactor. Digestion was carried out in a mesophilic temperature range for 20 days. pH and VFA were measured and ranged from 5 to 7.5 and 3500-500 mg/L, respectively, for all the mixtures throughout the digestion period. Percentage of COD removal efficiency after 20 days was found to be in the range of 76-86%. The maximum biogas production rate was found to be 4500 mL/day. Characterization of the final residue from each of the digesters was carried out by Scanning Electron microscope, Energy dispersive, thermogravimetric, FTIR Spectra, and Atomic microscope. Thermal analysis reveals that spent sludge can be potential waste energy sources.
厌氧共消化在混合不同类型废物产生沼气方面产生了更大的影响。在这项研究中，污水污泥 (SS) 和牛粪 (CM) 被用作主要废物，同时还使用了厨余垃圾 (KW)、庭院垃圾 (YW)、花卉垃圾 (FW) 和奶牛废水 (DWW) 作为共底物进行厌氧消化。以 1:2 的比例混合的混合物被送入单级上流厌氧污泥床 (UASB) 反应器。在中温范围内进行消化 20 天。pH 和 VFA 的测量范围分别为 5 到 7.5 和 3500-500 mg/L，所有混合物在整个消化过程中均在此范围内。20 天后 COD 去除效率的百分比在 76-86%之间。最大沼气产生速率为 4500 mL/天。通过扫描电子显微镜、能量色散、热重分析、傅里叶变换红外光谱和原子显微镜对每个消化器的最终残留物进行了表征。热分析表明，用过的污泥可以成为潜在的废能源。
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