To explore the feasibility of kitchen waste and municipal sludge combined thermophilic digestion, this study simulated the actual running conditions in a 50m3 CSTR reactor. Results showed that, under the conditions of hydraulic retention time (HRT) above 20 days and the ratio of restaurant waste and municipal sludge was 4∶ 1, the biogas production and methane concentration increased by 34. 2％ and 8. 1％, respectively, than that of kitchen waste digestion only. The concentration of hydrogen sulphide decreased by 65％. The restaurant waste and municipal sludge co-anaerobic digestion not only improves processing capacity and stability but also increases the output and quality of the biogas, which is a new way for the coordinated treatment of different organic wastes.%为探索餐厨垃圾和市政污泥联合高温厌氧消化的可行性.在一个50m3 的CSTR 反应器模拟实际工程运行条件,结果表明,当水力停留时间20d 以上,餐厨和污泥比例为4∶ 1 时,沼气产量和甲烷浓度相比单纯餐厨垃圾厌氧消化分别提高了34. 2％和8. 1％,硫化氢浓度降低了65％.通过餐厨垃圾和市政污泥联合厌氧,既提高了反应器的稳定性和处理能力,又增加了沼气产出与品质,是城市有机固废协同处理的新途径.
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