Palm oil mill effluent (pome) treatment using hybrid upflow anaerobic sludge blanket (huasb) reactors : impact on cod removal and organic loading rates.

N.A., Badroldin and Abdul Latiff, Ab Aziz and Abd Karim, Ahmad Tarmizi and M.A. , Fulazzaky (2008) Palm oil mill effluent (pome) treatment using hybrid upflow anaerobic sludge blanket (huasb) reactors : impact on cod removal and organic loading rates. In: Engineering Postgraduate Conference (EPC), Bangi, Selangor.

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Abstract

Processing of palm oil fruit into palm oil produced high strength wastewater which is known as palm oil mill effluent (POME). POME contains high concentrations of chemical oxygen demand (COD), total solids (TS), and suspended solids (SS). Before POME can be discharged to the environment, it has to be treated to the level conforming to the discharge standards. Currently, most palm oil mills in Malaysia are using anaerobic ponds to treat POME. This is very conventional and often creates environmental pollution themselves. Therefore, the aim of this study is to assess a more suitable treatment method to overcome the limitations and disadvantages of anaerobic ponds. In this study, three hybrid up-flow anaerobic sludge blanket (HUASB) reactors, treating POME with COD of ±5000 mg/L at room temperature were operated. Coarse gravel, fine gravel and crushed glass were applied as filter media in three reactors (R1, R2 and R3). The reactors were operated at organic loading rate (OLR) of 1.83 g COD/L.d and hydraulic retention time (HRT) of 2.73d for the start up operation. Experimental results indicated that POME can be treated more effectively by using HUASB reactors because HUASB was able to retain more biomass in the filter media in addition to the high concentration of biomass in the sludge blanket. Efficiency of treatment up to 98 % removal was observed. It was also shown that the HUASB reactors have shortened the start up period from 60 days as in UASB (up-flow anaerobic sludge blanket) reactors (in previous study) to 47 days to achieve steady state.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:HUASB; OLR; POME; steady state.
Subjects:T Technology > TP Chemical technology > TP995-996 Utilization of wastes
Divisions:Faculty of Civil and Environmental Engineering > Department of Water and Environment Engineering
ID Code:2306
Deposited By:Mrs Hasliza Hamdan
Deposited On:23 Apr 2012 09:12
Last Modified:23 Apr 2012 09:12

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