Treatment Of Palm Oil Mill Effluent Using
Biological Sequencing Batch Reactor System
Author(s)
C. W. Fun, M. R. U. Haq & S. R. M. Kutty
Abstract
Palm Oil Mill Effluent (POME) is known to cause serious environmental hazards
due to its high biochemical (BOD) and chemical oxygen demand (COD) if
disposed without proper treatment. Moreover, the processing of palm fruit
causes POME to have fibre and husk resulting in high level of total suspended
solids (TSS) and turbidity. This work focused to further treat effluent from the
anaerobic pond of a nearby palm oil mill using biological sequencing batch
reactor (SBR) system. The biological treatment was conducted in six phases
using the SBR system where phase 1 had 10 days sludge age and 30 minutes
settling time. Phase 2 had the same conditions as phase 1 with increased mixed
liquor suspended solids (MLSS). In phase 3, the MLSS was maintained at
2500–4000 mg/l with a settling time of 45 to 60 minutes. In Phase 4, the
aeration time was at four days with settling time of 60 to 75 minutes while phase
5 had three days aeration and one day idle time. In Phase 6, the aeration time
was increased to six days with 60 to 75 minutes settling time. The highest
removals were achieved from Phase 5 with percentage removals of 62% for TSS,
82% for total COD and 88% for soluble COD.
Keywords: POME, mixed liquor suspended solids (MLSS), TSS, sequencing
batch reactor (SBR).
1 Introduction
In Malaysia, palm oil is very productive where palm oil mills are operated at
least 300 days per year. After processing the fresh fruit bunch (FFB), 78% are
removed as waste such as empty fruit bunches shell, fibre and liquid effluent.
Generally, the effluent from palm oil mill is acidic in nature and has high BOD
Keywords
POME, mixed liquor suspended solids (MLSS), TSS, sequencing
batch reactor (SBR).
Related Book
Other papers in this volume
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