The utilisation of urban organic waste as feedstock for polyhydroxyalkanoates (PHA) production is growing since it allows to solve the main concerns about their disposal and simultaneously to recover added-value products. A pilot scale platform has been designed for this purpose. The VFA-rich fermentation liquid coming from the anaerobic treatment of both source-sorted organic fraction of municipal solid waste (OFMSW) and waste activated sludge (WAS) has been used as substrate for the aerobic process steps: a first sequencing batch reactor (SBR, 100 L) for the selection of a PHA-producing biomass, and a second fed-batch reactor (70 L) for PHA accumulation inside the cells. The SBR was operated at 2.0-4.4 kg COD/(m³ d) as OLR, under dynamic feeding regime (feast-famine) and short hydraulic retention time (HRT; 1 day). The selected biomass was able to accumulate up to 48% g PHA/g VSS. Both steps were performed without temperature (T) control, avoiding additional consumption of energy. In this regard, the applied OLR was tuned based on environmental T and, as a consequence, on biomass kinetic, in order to have a constant selective pressure. The latter was mainly quantified by the PHA storage yield (Y_P/S^feast 0.34-0.45 COD_P/COD_S), which has been recognized as the main parameters affecting the global PHA productivity [1.02-1.82 g PHA/(L d)] of the process.

城市有机废物作为聚羟基链烷酸酯 (PHA) 生产原料的利用正在增长，因为它可以解决对其处置的主要问题，同时回收增值产品。为此目的设计了一个中试规模的平台。来自城市固体废物源分选有机部分 (OFMSW) 和废弃活性污泥 (WAS) 厌氧处理的富含 VFA 的发酵液已用作好氧工艺步骤的底物：第一个序批式反应器 (SBR) , 100 L) 用于选择产生 PHA 的生物质，第二个补料分批反应器 (70 L) 用于细胞内 PHA 的积累。SBR 在 2.0-4.4 kg COD/(m ³d) 作为 OLR，在动态喂养制度（盛宴 - 饥荒）和短水力停留时间（HRT；1 天）下。所选生物质能够积累高达 48% g PHA/g VSS。两个步骤都在没有温度 (T) 控制的情况下进行，避免了额外的能量消耗。在这方面，应用的 OLR 是根据环境 T 和因此根据生物质动力学进行调整的，以便具有恒定的选择压力。后者主要通过PHA储存产量（Y _P/S^盛宴0.34-0.45 COD _P /COD _S）量化，已被公认为影响全球PHA生产力的主要参数[1.02-1.82 g PHA/(L d) ] 的过程。