The treatment of palm oil mill effluent (POME) has always been the topic of research in Malaysia due to the high concentration of total suspended solid (TSS) and oil and grease (O&G) ranges from 28 846 to 30 920 mg/L and 5614 to 8812 mg/L, respectively. Additionally, the release of methane gas during the treatment of POME in all of the palm oil mills has been the major contributor to greenhouse gas (GHG) effect. The main aim of this work is to evaluate the performance of the pilot-plant integrated anaerobic–aerobic bioreactor (IAAB) for POME treatment at two different phases: (a) startup and (b) long-term performance evaluation from an organic loading rate (OLR) of 10.5 to 32.5 gCOD/(L·day). Startup of the pilot-plant IAAB was successfully accomplished in 24 days with overall removal efficiencies in terms of biochemical oxygen demand (BOD), chemical oxygen demand (COD), and total suspended solid (TSS) of at least 90% at the OLR of 8.0 gCOD/(L·day). The pilot-plant IAAB achieved high BOD, COD, and TSS removal efficiencies of more than 99% for OLR up to 30.0 gCOD/(L·day) with methane yield ranges from 0.0406 LCH₄/gCOD_removed to 0.1312 LCH₄/gCOD_removed. The effluent quality remained stable with BOD of 16–107 mg/L with a high percent of compliance with the discharge limit of 100 mg/L. The coupling of the Grau second-order and Stover–Kincannon models (anaerobic system) with the Stover–Kincannon model (aerobic system) will completely define the pilot-plant IAAB system. This pilot-plant research will provide valuable data and experiences required to design and commission a full-scale IAAB.

中文翻译：

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厌氧-好氧生物反应器（IAAB）处理棕榈油厂废水（POME）的中试研究：启动和性能评估

棕榈油厂废水（POME）的处理一直是马来西亚研究的主题，因为总悬浮固体（TSS）和油脂（O＆G）的浓度很高，范围从28 846至30 920 mg / L和5614分别达到8812 mg / L。另外，在所有棕榈油工厂中，在处理POME期间释放甲烷气体一直是造成温室气体（GHG）效应的主要因素。这项工作的主要目的是在两个不同阶段评估用于POME处理的中试厂厌氧-好氧生物反应器（IAAB）的性能：（a）启动和（b）从有机负荷率进行长期性能评估（OLR）为10.5至32.5 gCOD /（L·天）。中试厂IAAB的启动成功完成了24天，在生化需氧量（BOD）方面具有整体去除效率，当OLR为8.0 gCOD /（L·day）时，化学需氧量（COD）和总悬浮固体（TSS）至少为90％。中试厂IAAB对OLR的BOD，COD和TSS去除效率高达99％以上，高达30.0 gCOD /（L·day），甲烷收率范围为0.0406 LCH₄ / gCOD_去除至0.1312 LCH ₄ / gCOD_去除。BOD为16–107 mg / L时，出水水质保持稳定，符合100 mg / L排放限值的百分比很高。Grau二阶模型和Stover–Kincannon模型（厌氧系统）与Stover–Kincannon模型（有氧系统）的耦合将完全定义中试厂IAAB系统。这项中试工厂研究将提供设计和调试完整的IAAB所需的宝贵数据和经验。