An investigation on the efficiency and compatibility of anaerobic co-digestion of three substrates: food wastes (FW), chicken manure (CM) and digested sludge (DS) was carried out. Mixtures of two and three co-substrates in batch experiments were conducted in 0.5-L bioreactors during 8 days under mesophilic conditions. Parameters analysis such as pH, volatile fatty acids, free ammonia (NH3), total solids (TS) and total volatile solids (TVS) was used to explain the behavior of each substrate and their mixtures. For the anaerobic digestion of two co-substrates (CM/DS with 30/70 ratio), total biogas production was equal to 2.5 L and was greater than the volume obtained for the same ratio of FW with DS. The three co-substrates (FW/CM/DS) digestion with (20/10/70) ratio showed best performances for total volatile solids (TVS) reduction and process stability. On the pilot bioreactor, a ratio of (20/5/75) was used for (FW/CM/DS) anaerobic digestion. After 50 days retention time, the biogas production reached 413.85 L/g TVSadd with TS and TVS reduction of 79 and 87% respectively.

中文翻译：

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中温条件下三种有机废物的厌氧共消化：实验室规模和中试规模研究

对三种底物厌氧共消化的效率和相容性进行了研究：食物垃圾 (FW)、鸡粪 (CM) 和消化污泥 (DS)。在中温条件下，在 0.5 升生物反应器中进行 8 天的批量实验中的两种和三种共底物的混合物。pH、挥发性脂肪酸、游离氨 (NH3)、总固体 (TS) 和总挥发性固体 (TVS) 等参数分析用于解释每种底物及其混合物的行为。对于两种共底物（CM/DS 比例为 30/70）的厌氧消化，总沼气产量等于 2.5 L，大于 FW 与 DS 比例相同时获得的体积。具有 (20/10/70) 比例的三种共底物 (FW/CM/DS) 消解在总挥发性固体 (TVS) 减少和工艺稳定性方面表现出最佳性能。在中试生物反应器上，(20/5/75) 的比例用于 (FW/CM/DS) 厌氧消化。经过 50 天的停留时间，沼气产量达到 413.85 L/g TVSadd，TS 和 TVS 分别减少了 79% 和 87%。