@misc{10481/35772,
year = {2015},
url = {http://hdl.handle.net/10481/35772},
abstract = {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/TiO2 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 (RCOD) 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.},
abstract = {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/TiO2 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 (RCOD), 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.},
organization = {The membrane pilot plant was constructed in the
framework of the European project PHOTOMEM
(contract no.FP7-SME-2011, grant 262470) and
revamped under the European project ETOILE (contract
no. FP7-SME-2007-1, grant 222331). Funding by the EC is gratefully acknowledged. The Spanish
Ministry of Science and Innovation is also gratefully
acknowledged for having funded the projects
CTQ2007-66178 and CTQ2010-21411, as well as the
University of Granada.},
publisher = {Consejo Superior de Investigaciones Científicas (CSIC)},
keywords = {Olive mill wastewater},
keywords = {Pretreatment tailoring},
keywords = {Threshold flux},
keywords = {Ultrafiltration},
keywords = {Wastewater treatment},
keywords = {Agua residual de la industria oleícola},
keywords = {Flujo límite},
keywords = {Pretratamiento focalizado},
keywords = {Tratamiento de augas residuales},
keywords = {Ultrafiltración},
title = {The importance of pretreatment tailoring on the performance of ultrafiltration membranes to treat two-phase olive mill wastewater},
doi = {10.3989/gya.0829142},
author = {Ochando Pulido, Javier Miguel},
}