有机负荷率对城市生活垃圾有机组分（OFMSW）两段式厌氧消化性能的影响。
Effect of organic loading rate on the performance of two-stage anaerobic digestion of the organic fraction of municipal solid waste (OFMSW).
作者信息
Rodríguez-Pimentel Reyna I, Rodríguez-Pérez Suyen, Monroy-Hermosillo Oscar, Ramírez-Vives Florina
机构信息
Biotechnology Department, Universidad Autónoma Metropolitana, Av. San Rafael Atlixco 186, Col. Vicentina, 09340 Iztapalapa, D.F, México E-mail:
Chemistry Department, Universidad de Oriente, Patricio Lumumba s/n, 223.0.06824, Santiago de Cuba, Cuba.
出版信息
Water Sci Technol. 2015;72(3):384-90. doi: 10.2166/wst.2015.223.
Two-stage anaerobic digestion of the organic fraction of municipal solid waste (OFMSW) was carried out: hydrolysis and acidogenesis in a continuous anaerobic hydrolytic leach bed (AHLB) reactor loaded at different rates (Bv = 3.8-7 gVSSL⁻¹d⁻¹) and methanogenesis of leachates, diluted with municipal wastewater in an upflow anaerobic sludge blanket (UASB) reactor at organic loading rates of 6.6-13 gCODLr⁻¹d⁻¹. In the AHLB reactor, 51-76% and 58-71% volatile solids and chemical oxygen demand (COD) removal efficiencies were obtained. During the hydrolysis and acidogenesis phases, the effluents were at pH 4.93, the leachate had a volatile fatty acids concentration of 35 g/L and the biogas was composed only of CO₂. The average methane production in the UASB in the load of 4.4 gVS L⁻¹ d⁻¹ in the AHLB was 3.32 LCH4Lr⁻¹d⁻¹ (yCH4 = 80%), with COD removal efficiency of 95% and methane yield 279 LCH4KgVS⁻¹OFMSW degraded.
对城市固体废弃物有机组分（OFMSW）进行了两段式厌氧消化：在不同负荷率（Bv = 3.8 - 7 gVSSL⁻¹d⁻¹）的连续厌氧水解渗滤床（AHLB）反应器中进行水解和产酸过程，渗滤液进行产甲烷过程，渗滤液在升流式厌氧污泥床（UASB）反应器中用城市污水稀释，有机负荷率为6.6 - 13 gCODLr⁻¹d⁻¹。在AHLB反应器中，挥发性固体和化学需氧量（COD）的去除效率分别为51 - 76%和58 - 71%。在水解和产酸阶段，出水pH值为4.93，渗滤液中挥发性脂肪酸浓度为35 g/L，沼气仅由CO₂组成。在AHLB中负荷为4.4 gVS L⁻¹ d⁻¹时，UASB中的平均甲烷产量为3.32 LCH4Lr⁻¹d⁻¹（yCH4 = 80%），COD去除效率为95%，甲烷产率为279 LCH4KgVS⁻¹OFMSW降解。
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