Abstract The mesophilic anaerobic co-digestion (AcD) performances of waste activated sludge (WAS) and aquaculture sludge (AS) were studied. Mixtures of different compositions (0, 30, 50, 70 and 100 % of AS on the volume basis) were used as AcD substrates and tested via biochemical methane potential assay. The results showed that CH4 production increased with AS/WAS ratio increment, and AS alone used as the substrate showed the maximum CH4 yield, which was 8% higher than that achieved using WAS alone as the substrate. The CH4 yield values were well fitted with the modified Gompertz model. The maximum methane potential (P0) and maximum methane production rate (R0) increased from 66.8 mL CH4/g VSfed to 70.9 mL CH4/g VSfed and from 4.40 mL CH4/g VSfed·d to 5.59 mL CH4/g VSfed·d, respectively, as the AS/WAS ratio increased from 0% to 100 %. In addition, lower levels of free ammonia and non-biodegradable organic matter contributed to the CH4 production increasing with AS/WAS ratio increased.

中文翻译：

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废弃活性污泥与水产养殖污泥厌氧共消化工艺性能

摘要 研究了废弃活性污泥（WAS）和水产养殖污泥（AS）的中温厌氧共消化（AcD）性能。不同组合物的混合物（基于体积的 0、30、50、70 和 100% 的 AS）用作 AcD 底物并通过生化甲烷潜力测定进行测试。结果表明，CH4 产量随着AS/WAS 比例的增加而增加，单独使用AS 作为底物显示出最大的CH4 产量，比单独使用WAS 作为底物所达到的CH4 产量高8%。CH4 屈服值与修正的 Gompertz 模型非常吻合。最大甲烷潜力（P0）和最大甲烷产率（R0）从 66.8 mL CH4/g VSfed 增加到 70.9 mL CH4/g VSfed，从 4.40 mL CH4/g VSfed·d 增加到 5.59 mL CH4/g VSfed·d，分别是，随着 AS/WAS 比率从 0% 增加到 100%。此外，