Abstract The treatment performance of palm oil mill effluent (POME) using a laboratory-scale moving bed biofilm reactor (MBBR) was investigated in this study. Two types of biofilm carriers were used to fill the MBBR: black plastic media (BPM) and Hexafilter (HEX). Three media filling fractions (MFFs: 25 %, 50 % and 70 %) and retention times (RTs: 24, 48 and 72 h) were investigated to achieve the best MBBR performance in terms of the removal of chemical oxygen demand (COD) and ammonia-nitrogen (NH3-N) from POME. Increasing the RT significantly improved the removal of COD and NH3-N, whereas increasing the MFF resulted in insignificant changes. Overall, HEX performed better than BPM at 50 % MFF (72 h RT). Metagenomics analysis identified approximately 13 phyla of bacteria on the HEX compared to the BPM with only 10 phyla. Based on these findings, the laboratory-scale MBBR deserved a vote as an alternative treatment for POME under appropriate RTs and MFFs and in the presence of a suitable microbial community.

中文翻译：

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实验室规模移动床生物膜反应器 (MBBR) 的性能及其在棕榈油厂废水 (POME) 处理中的微生物多样性

摘要 本研究研究了使用实验室规模移动床生物膜反应器 (MBBR) 处理棕榈油厂废水 (POME) 的性能。两种类型的生物膜载体用于填充 MBBR：黑色塑料介质 (BPM) 和六滤器 (HEX)。研究了三种培养基填充分数（MFF：25 %、50 % 和 70 %）和保留时间（RT：24、48 和 72 小时），以在去除化学需氧量 (COD) 和来自 POME 的氨氮 (NH3-N)。增加 RT 显着改善了 COD 和 NH3-N 的去除，而增加 MFF 导致不显着的变化。总体而言，HEX 在 50% MFF（72 小时 RT）下的表现优于 BPM。宏基因组学分析在 HEX 上鉴定了大约 13 个细菌门，而 BPM 只有 10 个门。基于这些发现，