Performance Modeling and Cost Analysis of a Pilot-Scale Reverse Osmosis Process for the Final Purification of Olive Mill Wastewater

Membranes

Javier Miguel Ochando-Pulido²  Gassan Hodaifa¹  Maria Dolores Victor-Ortega² 

[1] Department of Molecular Biology and Biochemical Engineering, University of Pablo de Olavide, 41013 Seville, Spain; E-Mail:;Department of Chemical Engineering, University of Granada, 18071 Granada, Spain; E-Mails:

关键词: olive mill wastewater;    advanced oxidation processes;    membrane processes;    reverse osmosis;    wastewater reclamation;    modelization;   

DOI  :  10.3390/membranes3040285

来源: mdpi

【 摘 要 】

A secondary treatment for olive mill wastewater coming from factories working with the two-phase olive oil production process (OMW-2) has been set-up on an industrial scale in an olive oil mill in the premises of Jaén (Spain). The secondary treatment comprises Fenton-like oxidation followed by flocculation-sedimentation and filtration through olive stones. In this work, performance modelization and preliminary cost analysis of a final reverse osmosis (RO) process was examined on pilot scale for ulterior purification of OMW-2 with the goal of closing the loop of the industrial production process. Reduction of concentration polarization on the RO membrane equal to 26.3% was provided upon increment of the turbulence over the membrane to values of Reynolds number equal to 2.6 × 10⁴. Medium operating pressure (25 bar) should be chosen to achieve significant steady state permeate flux (21.1 L h⁻¹ m⁻²) and minimize membrane fouling, ensuring less than 14.7% flux drop and up to 90% feed recovery. Under these conditions, irreversible fouling below 0.08 L h⁻² m⁻² bar⁻¹ helped increase the longevity of the membrane and reduce the costs of the treatment. For 10 m³ day⁻¹ OMW-2 on average, 47.4 m² required membrane area and 0.87 € m⁻³ total costs for the RO process were estimated.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.