Department of Environmental Engineering, Faculty of Engineering and Green Technology (FEGT), UniversitiTunku Abdul Rahman, 31900, Kampar, Perak, Malaysia.
J Environ Manage. 2022 Oct 15;320:115750. doi: 10.1016/j.jenvman.2022.115750. Epub 2022 Aug 4.
Palm oil is the most utilized vegetable globally which is mostly produced in countries such as Malaysia, Indonesia and Thailand. The great amount of POME generation from palm oil mills is now a threat to the environment and require a suitable treatment of POME to reduce the organic strength in accordance with the standard discharge limit before releasing to the environment. Currently, the technology to combine the anaerobic process and biofilm system in bioreactors have produced a fresh idea in treatments of high strength wastewater like POME. Anaerobic biofilm reactor is a convincing method for POME treatment due to its significant advantages over the conventional biological treatments consisting of anaerobic, aerobic and facultative pond systems. Overall, integrated anaerobic-aerobic bioreactor (IAAB) can remove more than 99% of chemical oxygen demand (COD), biochemical oxygen demand (BOD) and total suspended solids (TSS) with the combination of anaerobic and aerobic digestion for POME treatment. It has better performance as compared to up-flow anaerobic sludge blanket (UASB) and up-flow anaerobic filter (UAF) with 80% and 88-94% COD removal efficiency respectively. Anaerobic pond was found to perform well also by removing 97.8% of COD in POME but require long retention time and larger land. Hence, this study aims to provide intensive review of the performance of the anaerobic biofilm reactor in treating POME and the recent advancements in this technology. The limitations and future perspectives in utilization of anaerobic biofilm reactor during its operation in treating POME are discussed.
棕榈油是全球应用最广泛的植物油，主要生产国包括马来西亚、印度尼西亚和泰国。目前，棕榈油厂产生的大量棕榈油废水（POME）对环境造成了威胁，需要对其进行适当的处理，以降低有机强度，使其符合排放标准后才能排放到环境中。目前，将厌氧工艺与生物膜系统结合在生物反应器中的技术为处理高浓度废水（如 POME）提供了新的思路。与传统的厌氧、好氧和兼性池塘系统相比，厌氧生物膜反应器在处理 POME 方面具有显著优势，因此是一种可靠的方法。总体而言，集成厌氧-好氧生物反应器（IAAB）可以通过厌氧和好氧消化的结合去除 POME 中超过 99%的化学需氧量（COD）、生化需氧量（BOD）和总悬浮固体（TSS）。与上流式厌氧污泥床（UASB）和上流式厌氧滤池（UAF）相比，IAAB 的性能更好，其 COD 去除效率分别为 80%和 88-94%。研究还发现，厌氧塘在去除 POME 中的 COD 方面也表现良好，去除率达到 97.8%，但其需要较长的停留时间和更大的占地面积。因此，本研究旨在对厌氧生物膜反应器处理 POME 的性能进行综合评价，并对该技术的最新进展进行综述。讨论了在处理 POME 过程中，厌氧生物膜反应器在运行过程中的局限性和未来展望。
