Abstract the energy and nutrient recovery of the sludge cake (S) from poultry slaughtering wastewater was investigated by the anaerobic co-digestion with sweet potato (P) within a wide range of S:P of 100:0 to 0:100 (mass ratio). The assay was conducted using batch anaerobic digesters (6L capacity) in laboratory scale operating at room temperature during 145 days. The highest methane yield (0.5032 3 kg VS−1±0.01) was obtained in the treatment S80P20 (68.2% CH4±0.14) indicating that co-digestion of sludge cake and sweet potato at this ratio has provided an optimum environment for microorganism activity due to the balanced nutrient content Concerning the nutrient recovery, the higher the percentage of the sludge cake in the mixture, the higher the concentration of total N and P. Multivariate analysis (Cluster and PCA) revealed that the S:P range of 100:0 to 60:40 represents the higher energetic potential recovery and the higher digestate quality with greater agronomic value without the associated phytotoxicity.

中文翻译：

---

家禽屠宰废水处理污泥饼与甘薯厌氧共消化：能量和养分回收

摘要 通过与甘薯（P）在S:P 100:0~0:100（质量比）范围内厌氧共消化对家禽屠宰废水污泥饼（S）的能量和养分回收进行了研究。 ）。该测定使用实验室规模的分批厌氧消化器（6L 容量）在室温下运行 145 天进行。在处理 S80P20 (68.2% CH4±0.14) 中获得了最高的甲烷产量 (0.5032 3 kg V​​S−1±0.01)，表明该比例的污泥饼和甘薯共消化为微生物活动提供了最佳环境。平衡养分含量 关于养分回收，混合物中污泥饼的百分比越高，总 N 和 P 的浓度越高。 多变量分析（聚类和 PCA）显示 S：