The efficiency of the advanced hybrid process for purification of dairy waste wastewater applying ultrasonic irradiation and pressure-driven membrane ultrafiltration process was incvestigated

Hodúr, Cecilia

Kertész, Szabolcs

Keszthelyi-Szabó, Gábor

László, Zsuzsanna

Repository of the Academy's Library

Treatment of dairy wastewater using hybrid techniques based on ultrasonic cavitation and membrane filtrationSzabolcs Kertész*, Gábor Keszthelyi-Szabó, Cecilia Hodúr and Zsuzsanna László Department of Process Engineering, Faculty of Engineering, University of Szeged, Moszkvai krt. 9., H-6725 Szeged, Hungary *Corresponding author: kertesz@mk.u-szeged.huMany studies have conducted using ultrasound as a means of mitigating membrane fouling over the last decade and to improve the cleaning of fouled membranes [1]. Ultrasound has been comprehensively accepted as a powerful method for the cleaning of fouled membrane in water treatment and it has been regarded as efficient technique in membrane filtration as well as membrane cleaning of fouled membranes to enhance the permeate flux [2]. Ultrasound irradiation generates a number of physical forces, what can be generated by the alternating compression and rarefaction cycles, like vibration and physical agitation. In Figure several different mechanisms of ultrasound are shown which may lead to particle release from a particle-fouled membrane surface, including cavitation mechanisms, microstreaming, acoustic streaming and micro-jets. Novel wastewater treatment is necessary to effectively decrease the organic load of dairy wastewater before disposal [3]. In this work the efficiency of the advanced hybrid process, for purification of dairy wastewater, that apply ultrasonic irradiation and a pressure-driven membrane ultrafiltration process was investigated. Permeate fluxes, relative fluxes, chemical oxygen demand membrane rejections and membrane, gel-layer and inner porous fouling resistances were analyzed and compared in single and combined processes. Furthermore, to understand the fouling mechanisms in depth, the influence of the membrane fouling on the contact angle results was also investigated.Fig. 1   Mechanisms for particle detachment during ultrasonic membrane filtration Keywords: dairy wastewater; ultrasound; ultrafiltration; hybrid processes; foulingAcknowledgements   This project was supported by the János Bolyai Research Scholarship of the Hungarian Academy of Sciences. The research was also supported by the European Union and co-funded by the European Social Fund. Project title: “Green Energy Cooperation in Higher Education (GENCHE)” Project number: TÁMOP-4.1.1.C-12/1/KONV-2012-0012.  References [1] Ming Cai, Shuna Zhao, Hanhua Liang, Mechanisms for the enhancement of ultrafiltration and membrane cleaning by different ultrasonic frequencies, Desalination 263 (2010) 133–138. [2] Lijuan Wang, Qunhui Wang, Yan Li, Han Lin, Ultrasound-assisted chemical cleaning of polyvinylidene fluoride membrane fouled by lactic acid fermentation broth, Desalination 326 (2013) 103–108. [3] Dogan Karadag, Oguz Emre Köroglu, Bestami Ozkaya, Mehmet Cakmakci, A review on anaerobic biofilm reactors for the treatment of dairy industry wastewater. Process Biochem (2014), http://dx.doi.org/10.1016/j.procbio.2014.11.005 The Energy and Materials Research Conference - EMR2015                    Madrid (Spain), 25-27 February 201549Solar Energy The Energy and Materials Research Conference - EMR2015                    Madrid (Spain), 25-27 February 201550

Treatment of dairy wastewater using hybrid techniques based on ultrasonic cavitation and membrane filtration

Abstract

Similar works

Full text

Available Versions

Repository of the Academy's Library