An integrated centrifugation–ultrafiltration system in the treatment of olive mill wastewater

Turano, E. J.; Curcio, Stefano; Paola, Maria De; Calabrò, Vincenza; Iorio, G.

doi:10.1016/s0376-7388(02)00369-1

Cited by 190 publications

(90 citation statements)

References 18 publications

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“…They proposed a pretreatment consisting of oil removal and suspended solid setling, achieving a inal 50% organic mater removal with respect to the raw OMW-3 (COD = 70 g/L). Turano et al [23] proposed centrifugation as pretreatment, simple, and mechanical operation which does not need addition of chemicals and is available in the production line, before UF-polysulfone, molecular weight cutof (MWCO) 17 kDa-for the treatment of OMW-3. The centrifugation pretreatment removed 80% of the suspended solid concentration, and 90% COD reduction was achieved at the outlet of the integrated process.…”

Section: Microiltration and Ultrailtration Membranesmentioning

confidence: 99%

On the Purification of Agro-Industrial Wastewater by Membrane Technologies: The Case of Olive Mill Effluents

Ochando-Pulido¹,

Martínez-Férez²

2017

Desalination

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Section: Microiltration and Ultrailtration Membranesmentioning

confidence: 99%

On the Purification of Agro-Industrial Wastewater by Membrane Technologies: The Case of Olive Mill Effluents

Ochando-Pulido¹,

Martínez-Férez²

2017

Desalination

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“…The UF membrane performance was also improved in terms of the volume feed recovery factor (VFR), achieving up to 88.2 vs. 87.2% and 90.7 vs. 89.3%. Turano et al (2002) reported the use of centrifugation as pretreatment prior to the UF of OMW from a three-phase mill. However, despite the relevant COD reduction, the organic matter concentration in the final permeate stream was still too high.…”

Section: Infl Uence Of the Different Pretreatments On The Threshold Umentioning

confidence: 99%

The importance of pretreatment tailoring on the performance of ultrafiltration membranes to treat two-phase olive mill wastewater

Pulido¹

2015

Grasas y Aceites

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SUMMARY:In this work, the performance of an ultrafiltration (UF) membrane in the treatment of the effluents by-produced by olive mills is addressed by applying different pretreatments on the raw effluents. By conducting a photo-catalytic process (UV/TiO 2 PC) after pH-temperature flocculation (pH-T F) higher threshold flux values were observed for all feed stocks than by applying solely the pH-T F process, with an 18.8-34.2% increment. In addition, the performance of the UF membrane was also improved in terms of rejection efficiency, such that higher rejection values were yielded by the membrane for the organic pollutants (R COD ) by 48.5 vs. 39.9% and 53.4 vs. 42.0%. The UF membrane performance was also improved in terms of the volume feed recovery factor (VFR), achieving up to 88.2 vs. 87.2% and 90.7 vs. 89.3%. Results in the same line were also observed when the highly polluted olives oil washing wastewater raw stream was previously mixed with the effluent stream coming from the washing of the olives. This permits the UF to permeate, achieving the standard limits to reuse the purified effluent for irrigation purposes (COD values below 1000 mg·L −1 ), which makes the treatment process cost-effective and results in making the olive oil production process environmentally friendly. KEYWORDS: Olive mill wastewater; Pretreatment tailoring; Threshold flux; Ultrafiltration; Wastewater treatmentRESUMEN: La importancia del pretratamiento focalizado para el rendimiento de las membranas de ultrafiltración en el tratamiento de las aguas residuales de la industria oleícola. En este estudio se aborda el rendimiento de una membrana de ultrafiltración (UF) para el tratamiento de los efluentes generados por la industria oleícola, mediante la aplicación de distintos pretratamientos. Tras aplicar un proceso fotocatalítico (UV/TiO 2 PC) después de una floculación pH-temperatura (pH-T F) se observaron flujos límite para todos los efluentes mayores que tras la aplicación únicamente del proceso pH-T F, con incrementos del 18.8-34.2 %. Además, el rendimiento de la membrana de UF mejoró en términos de eficiencia de rechazo, con mayores valores de rechazo respecto de los contaminantes orgánicos (R COD ), 48.5 vs. 39.9 % y 53.4 vs. 42.0 %. El rendimiento de la membrana mejoró también en términos de recuperación de volumen de alimentación (VRF), alcanzando hasta un 88.2 vs. 87.2 % y 90.7 vs. 89.3 %. Se observaron resultados en la misma línea cuando las aguas residuales del lavado del aceite, altamente contaminadas, fueron previamente mezcladas con el efluente generado en el lavado de las aceitunas. Esto permite que el permeado de la UF cumpla con los límites estándar para la utilización del efluente para riego (valores de la DQO inferiores a 1000 mg L −1 ), favoreciendo la eficiencia económica del proceso de tratamiento y permitiendo que el proceso de producción del aceite de oliva pueda ser respetuoso con el medio ambiente. PALABRAS CLAVE: Agua residual de la industria oleícola; Flujo límite; Pretratamiento focalizado; Tratamiento de ag...

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“…In literature, several treatment options and strategies including; centrifuge [1], evaporation [2], filtration [3], ecoagulation [4]- [5] and applying to land [6] have been proposed for management of olive mill wastewater. Besides these methods; advanced treatment processes such as ozonation [7]- [8]- [9], photocatalysis [10], electrocoagulation [5]- [11], fenton oxidation [12], ozone and fenton oxidation [13] and wet air oxidation [14] have been tested for olive mill wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

Electrohydrolysis of Olive Mill Wastewater: Effect of Applied DC Voltage

2017

IJAAEE

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Abstract-The aim of this study is the investigation of electrohydrolysis treatment process for olive mill wastewater in terms of pollutants removal and hydrogen production. For this purpose, Different voltages including 4, 6 and 8 V DC were tested for 3 hours. 8 V DC for 3 hours was found to be as the most effective condition. At this optimum voltage, different time periods were also investigated. At 8 V, significant pollutant removal efficiencies were obtained. 68% turbidity, 70% TSS, 52% COD and 19% sCOD removal efficiencies were achieved. Volume of produced gas was 1500±10 ml and hydrogen percent was determined as 85%. Hydrogen production along with pollutant removal is one of the advantages of electrohydrolysis. Therefore, electrohydrolysis can be proposed as a feasible alternative treatment step for wastewaters which is characterized by high organic matter and also suspended matter.

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An integrated centrifugation–ultrafiltration system in the treatment of olive mill wastewater

Cited by 190 publications

References 18 publications

On the Purification of Agro-Industrial Wastewater by Membrane Technologies: The Case of Olive Mill Effluents

On the Purification of Agro-Industrial Wastewater by Membrane Technologies: The Case of Olive Mill Effluents

The importance of pretreatment tailoring on the performance of ultrafiltration membranes to treat two-phase olive mill wastewater

Electrohydrolysis of Olive Mill Wastewater: Effect of Applied DC Voltage

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