超声预处理对牛粪与厨余垃圾和污泥厌氧共消化的影响。
Effect of ultrasound pre-treatment in the anaerobic co-digestion of cattle manure with food waste and sludge.
机构信息
Department of Chemical Engineering and Environmental Technology, University Institute of Technology of Asturias, Campus of Gijon, University of Oviedo, 33203 Gijón, Spain.
Department of Chemical Engineering and Environmental Technology, University Institute of Technology of Asturias, Campus of Gijon, University of Oviedo, 33203 Gijón, Spain.
出版信息
Bioresour Technol. 2014 Feb;154:74-9. doi: 10.1016/j.biortech.2013.11.096. Epub 2013 Dec 15.
This paper presents a study of the effect of applying ultrasound pre-treatment in the production of methane when co-digesting mixtures of cattle manure with food waste and sludge. A series of experiments were carried out under mesophilic and thermophilic conditions in continuously stirred-tank reactors containing 70% cattle manure, 20% food waste and 10% sewage sludge. Ultrasound pre-treatment allows operating at lower HRT, achieving higher volumetric methane yields: 0.85 L CH4/L day at 36°C and 0.82 CH4/L day at 55°C, when cattle manure and sewage sludge were sonicated. With respect to the non-sonicated waste, these values represent increases of up to 31% and 67% for mesophilic and thermophilic digestion, respectively.
本文研究了在中温与高温条件下，应用超声波预处理技术对牛粪与厨余垃圾和污泥混合物进行共消化生产甲烷的影响。在连续搅拌槽式反应器中进行了一系列实验，其中包含 70%的牛粪、20%的厨余垃圾和 10%的污水污泥。超声波预处理可以在较低的水力停留时间下运行，实现更高的体积甲烷产率：在 36°C 时为 0.85 L CH4/L 天，在 55°C 时为 0.82 CH4/L 天，此时对牛粪和污水污泥进行了超声处理。与未经超声处理的废物相比，中温和高温消化的甲烷产量分别提高了 31%和 67%。
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