Hodúr Cecília

Kertész Szabolcs

Sz. Gulyás Nikolett

English

University of Szeged

55  Short presentations  APPLICATION OF 3D PRINTED TURBULENCE PROMOTER IN DAIRY WASTEWATER ULTRAFILTRATION Nikolett Sz.Gulyás1*, Szabolcs Kertész2, Cecilia Hodúr2 1Doctoral School of Environmental Sciences, University of Szeged, Szeged, HUNGARY 2Department of Biosystems Engineering, Faculty of Engineering, University of Szeged, Szeged, HUNGARY   *corresponding author: gulyasn@mk.u-szeged.hu  The food industry, such as the dairy industry generates the large volume of wastewater due to the high water consumption during technological operations, washing and cleaning. Many dif-ferent methods such as biological and physico-chemical methods are used to treat dairy wastewater efficiently but they have their disadvantages (high operating costs, high space re-quirements, operational difficulties). Membrane technologies are promising methods to treat dairy wastewaters. The main disadvantage of membrane filtration in dairy wastewater treatment is membrane fouling, which causes flux decline, decreased membrane life-time, and increased operational cost. One way to reduce the fouling is to increase the surface shear rate of the membrane. The method for increasing shear rate is to change flow properties (stirring and using 3D printed turbulence promoter). 3D printing technology and membrane module design, it could potentially address the membrane fouling problem through the optimization of spacers to increase mass transfer and reduce the concentration polarization at the membrane surface.  Ultrafiltration (UF) experiments were performed model dairy wastewater with different trans-membrane pressures (0.2, 0.3 and 0.4 MPa) and stirring velocities (200, 300 and 400 rpm). Polyethersulfone (PES) UF membranes with molecular weight cut-off (MWCO) of 50 kDa and polylactic acid (PLA) 3D printed spacer configurations were used. The permeate flux values, resistances and membrane rejection were examined and the effect of spacer was observed.  Acknowledgements: The authors are thankful for the financial support of the NKFI-FK-142414 project, (BO/00576/20/4) and the ÚNKP-22-5-SZTE-210.   

Application of 3D printed turbulence promoter in dairy wastewater ultrafiltration : [abstract]

http://acta.bibl.u-szeged.hu/84173/1/wellmann_abstracts_2023_055.pdf

Application of 3D printed turbulence promoter in dairy wastewater ultrafiltration : [abstract]

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