TREATING PALM OIL MILL EFFLUENT BY ACTIVATED SLUDGE PROCESS USING SUBMERGED MECHANICAL AERATOR/AGITATOR REPLACING SURFACE AERATOR

Authors

  • Yahaya Hawari Malaysian Palm Oil Board (MPOB), 6, Persiaran Institusi, Bandar Baru Bangi, 43000 Kajang, Selangor, Malaysia
  • Wira Jazair Yahya Vehicle System Engineering, Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Semarak, 54100 Kuala Lumpur, Malaysia
  • Ikuma Sonda Hanshin Engineering Co., Ltd., 2-26-7 Shikanjima, Konohana-ku, Osaka 554-0014, Japan
  • Hirotaka Kawashima Hanshin Engineering Co., Ltd., 2-26-7 Shikanjima, Konohana-ku, Osaka 554-0014, Japan
  • Zahari Mohamad Vehicle System Engineering, Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Semarak, 54100 Kuala Lumpur, Malaysia
  • Muhammad Aiman Abu Bakar Vehicle System Engineering, Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Semarak, 54100 Kuala Lumpur, Malaysia
  • Hasannuddin Abd Kadir Vehicle System Engineering, Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Semarak, 54100 Kuala Lumpur, Malaysia

DOI:

https://doi.org/10.11113/jt.v81.13147

Keywords:

Activated sludge method, aeration, agitation, palm oil, palm oil mill effluent

Abstract

Activated sludge process (ASP) is gaining recognition as a process technique for the control of biological oxygen demand (BOD) in palm oil mill effluent (POME). Surface aerators or diffusing plates are often used in aeration tanks serving as core of the ASP. For consistent improvement in water quality within the aeration tank utilising the ASP and in particular, mitigating its BOD effluent stream, this study replaced the surface aerator with submerged mechanical aerator/agitator incorporating separate “agitation function†and “agitation diffusing function†intended for use in aeration tank of polishing plant that contains surface aerators. In order to confirm the activated state of the sludge in the aeration tanks, sludge was observed by microscopy (magnification 600 ´ or lower). The water analysis, POME, BOD, ammonium, and total nitrogen were analsyed. As a result of the study, improvement in water quality criteria including the agitation state in the aeration tank, mixed liquid dissolved oxygen, and BOD were observed. The BOD has improved from 34.7% to 93.1% at a maximum removal rate.

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Published

2019-04-01

Issue

Vol. 81 No. 3: May 2019

Section

Science and Engineering

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Copyright of articles that appear in Jurnal Teknologi belongs exclusively to Penerbit Universiti Teknologi Malaysia (Penerbit UTM Press). This copyright covers the rights to reproduce the article, including reprints, electronic reproductions, or any other reproductions of similar nature.

How to Cite

TREATING PALM OIL MILL EFFLUENT BY ACTIVATED SLUDGE PROCESS USING SUBMERGED MECHANICAL AERATOR/AGITATOR REPLACING SURFACE AERATOR. (2019). Jurnal Teknologi (Sciences & Engineering), 81(3). https://doi.org/10.11113/jt.v81.13147