Biological treatment of anaerobically digested palm oil mill effluent (POME) using a Lab-Scale Sequencing Batch Reactor (SBR)

Investigation of Three Pre-treatment Methods Prior to Nanofiltration Membrane for Palm Oil Mill Effluent Treatment

“…To reduce the land requirement, some researchers have investigated the essential of biological pre-treatment. Some example of biological of pre-treatment of POME are anaerobic fluidized bed (Borja & Banks 1995), two stage of up-flow anaerobic sludge blanket (Borja et al 1996), anaerobic digester (Chan et al 2010), aerobic treatment (Vijayaraghavan et al 2007), rotating biological contactor (Najafpour et al 2005) and sludge fixed film bioreactor (Zinatizadeh et al 2006). Meanwhile to reduce the long residence time, some of the researchers have been investigated the physicalchemical pre-treatment, solvent extraction (Hameed et al 2003), coagulation (Ahmad et al 2006), dissolved air flotation (Ng et al 1988), adsorption (Ahmad et al 2005) and ultrafiltration (Said et al 2014).…”

Effect of palm oil mill effluent pome treatment by activated sludge

“…Besides, a group scientist had proved that Sequencing Batch Reactor (SBR) able to achieve 82% of COD removal efficiency by maintaining the MLSS at 2,500 -4,000 mg/L at HRT of 3 days [10]. Performance of SBR system also reported, whereby removal of COD, BOD and TSS were 96%, 98% and 99% with MLVSS, OLR and SLR operated in the optimum range of 17,500 -20,000 mg/L, 1.8 -4.2 kg COD/m 3 day, 0.17 -0.40 kg BOD/m 3 day and 2.5 -4.6 kg TSS/m 3 day, respectively [8].…”

“…Ponding system is the most common one, which consist of anaerobic pond, facultative pond and aerobic pond [6,7]. To improve the performance, some palm oil mills also employ tank digesters and extended aeration (hydraulic retention time [HRT] about 40 days) [8].…”

“…Current years, activated sludge treatment was reported to improve POME treatment [8,9,10,11]. Another author had reported that by using activated sludge reactor after anaerobic digestion process, COD removal efficiency were found to be 83% and 57% at 36 hours and 24 hours of hydraulic retention time (HRT) respectively.…”

Aerobic Post-treatment of Different Anaerobically Digested Palm Oil Mill Effluent (POME)

“…However, activated sludge reactor [3] and sequencing batch reactor [4], [5] were proposed to be used as post-treatment after anaerobic digestion of POME. Vijayaraghavan et al [3] investigated aerobic post-treatment of anaerobically digested POME and diluted raw POME using activated sludge reactor with a fixed biomass concentration of 3900 mg/L.…”