title: Performance investigation of a jet loop membrane bioreactor for the treatment of an actual olive mill wastewater.
abstract: In this study, following the pre-treatment of olive mill wastewater (OMW), its treatment in a jet loop membrane bioreactor (JLMBR) was investigated. Among the pre-treatment options, the configuration composed of physical settling, cartridge filter and ceramic membrane showed the best performance in terms of investigated parameters. For the JLMBR that was fed by pretreated OMW, up to 93 and 87% removal efficiencies were achieved for the chemical oxygen demand (COD) and total phenol, respectively, at volumetric organic load (VOL) of 17.8 kg COD/m3day. The calculated specific oxygen uptake rate (SOUR) values were in the range 7.7-34.7 g O2/kg MLVSS h. When even hydraulic retention times (HRT) values decreased by a factor of 1:24, system performance in terms of COD and total phenol removal remained almost stable. Decreasing the sludge retention time (SRT) to three days made considerable perturbations for the system performance, increasing the effluent COD and total phenol values in 900 and 80 mg/L, respectively. The JLMBR showed a high overall performance for the treatment of an actual OMW under the evaluated operational conditions.
authors.affiliation: Department of Environmental Engineering, Engineering and Architecture Faculty, Kastamonu University, Kastamonu 37200, Turkey. Electronic address: ndegermenci@gmail.com.
authors.forename: Nejdet
authors.initials: N
authors.lastname: Değermenci
authors.affiliation: Department of Environmental Engineering, Engineering Faculty, Bayburt University, Bayburt 69000, Turkey.
authors.forename: İbrahim
authors.initials: İ
authors.lastname: Cengiz
authors.affiliation: Department of Environmental Engineering, Engineering Faculty, Atatürk University, Erzurum 25240, Turkey.
authors.forename: Ergun
authors.initials: E
authors.lastname: Yildiz
authors.affiliation: Department of Environmental Engineering, Engineering Faculty, Atatürk University, Erzurum 25240, Turkey.
authors.forename: Alper
authors.initials: A
authors.lastname: Nuhoglu
mesh_terms: D057919:Biological Oxygen Demand Analysis; D019149:Bioreactors; D004867:Equipment Design; D005525:Food-Processing Industry; D007220:Industrial Waste; D031658:Olea; D019800:Phenol / Q000302:isolation & purification; D012722:Sewage; D014865:Waste Disposal, Fluid / Q000295:instrumentation* / Q000379:methods; D062065:Wastewater / Q000737:chemistry
chemical_list: D007220:Industrial Waste; D019800:Phenol; D012722:Sewage; D062065:Wastewater
keywords: Aerobic treatment; Jet loop reactor; Membrane bioreactor; Olive mill wastewater