Abstract Anaerobic digestion (AD) is an attractive technology for treatment of slaughterhouse blood waste for energy recovery to offset energy used in the slaughterhouse. However, no studies have been conducted at the pilot or full scales using such waste streams as the primary substrate. In this study, three 197-L pilot scale two-stage AD systems, with or without bamboo biocarriers, treating poultry blood waste were evaluated at two organic loading rates (OLRs) (low = 0.4 and high = 0.7 g COD L−1 day−1) under mesophilic condition (26 ± 2 °C) for 260 days. Biocarriers were added to immobilize the microflora and increase cell residence time in the digesters. Results show that the system with biocarriers had methane yield of 192 mL g−1 CODadded and COD removal of 32.4% at the high OLR, and methane yield of 384 mL g−1 CODadded and COD removal of 68.5% at the low OLR, which were significantly higher than those of the system without biocarriers (used as control). Methanobrevibacter and Methanobacterium beijingense were the dominant archaea in the system using biocarriers. It is estimated that 39.7–41.4 kJ can be recovered from the treatment of blood waste from each kg of slaughtered livestock weight using the two-stage AD system.

中文翻译：

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使用中试规模的两级厌氧消化器处理屠宰场血液废物用于沼气生产

摘要 厌氧消化 (AD) 是一种有吸引力的技术，用于处理屠宰场血液废物以进行能量回收，以抵消屠宰场使用的能量。然而，尚未使用此类废物流作为主要基质进行中试或全面研究。在这项研究中，三个 197-L 中试规模的两阶段 AD 系统，有或没有竹生物载体，以两种有机负荷率 (OLR)（低 = 0.4 和高 = 0.7 g COD L−1 天）处理家禽血液废物-1) 在中温条件 (26 ± 2 °C) 下 260 天。添加生物载体以固定微生物群并增加细胞在消化器中的停留时间。结果表明，在高 OLR 下，带有生物载体的系统的甲烷产量为 192 mL g-1 COD，COD 去除率为 32.4%，甲烷产量为 384 mL g-1 COD，COD 去除率为 68。在低 OLR 时为 5%，这显着高于没有生物载体的系统（用作对照）。Methanobrevibacter 和 Methanobacterium beijingense 是使用生物载体的系统中的优势古菌。据估计，使用两级 AD 系统处理每公斤屠宰牲畜的血液废物可以回收 39.7-41.4 kJ。