Cross-border network for knowledge transfer and innovative development in wastewater treatment WATERFRIEND HUSRB/1203/221/196 1st HUSRB Students Meeting

1st Students Meeting Waterfriend Microfiltration of wastewater from sugar industry Dragana Đilas

.. revers osmosis water mono- valent ions bi- valent ions virusesbacterias suspended particles water mono- valent ions bi- valent ions viruses water mono- valent ions bi- valentn ions water mono- valent ions bi- valentn ions microfiltration ultrafiltration nanofiltration sucrose Types of the membrane separation techniques 1st Students Meeting Waterfriend

.. retentate fluid permeate 1st Students Meeting Waterfriend

.. Area under influence of the mass transfer Flux Increase of flow rate Increased temperature ecreased concentration of the fluid Transmembrane pressure Water Concentration polarization and membrane fouling and membrane fouling Membrane CnCnCnCn CmCmCmCm Flux border of the concentration layer 1st Students Meeting Waterfriend

.. The total water consumption of the sugar is about 15 m 3 /t of processed sugar beet, while consumption of fresh water is around m 3 /t of refined sugar beet, or even less in modern sugar factories. The water originating from the washing process has a high content of organic pollution due to the presence of sludge and sugar. COD (chemical oxygen demand) of process wastewater from sugar production ranges from mg O 2 /l. 1st Students Meeting Waterfriend Characteristics of wastwater from sugar industry

.. P ul P iz Water 1 – tank, 2 – termostat, 3 – pump, 4 – modul with membrane, 5 – tank for permeate, 6 – tank for retentate, 7 – ventil for flow rate correction, 8 – ventil for pressure correction, 9 – ventil for retentate, 10 – thermometer, 11 – manometer, 12 – manometer, 13 – rotameter 1st Students Meeting Waterfriend

.. Wastewater characteristics are: COD mg O 2 /l Conductivity mS/cm Suspended particles g/l Turbidity – 653 NTU pH – st Students Meeting Waterfriend Ceramic membrane GEA 200 nm 5.5x10 -3 m 2 Ceramic membrane GEA 200 nm 5.5x10 -3 m 2 ParametersQ [L/h]P [bar] Varied values 50/100 /150 1/2/3

.. Water flux and wastewater permeate flux, depending on the transmembrane pressure at microfiltration on ceramic membrane Waste water permeate flux (L/m 2 h) at a flow rate of 100 l/h is less than the flux of distilled water, and this tendency is maintained as the pressure increases. The decrease means that the flux results in the formation of resistance in microfiltration of wastewater, and to the formation of an additional layer on the surface of the filtration membrane of the compounds present in waste water. 1st Students Meeting Waterfriend

.. We have carried out a comparison of microfiltration pre-treatment and directly, during which we received 20% greater flux if we use pre-treatment.

.. 1st Students Meeting Waterfriend Electrical conductivity before microfiltration in wastewater and after microfiltration in retentate, and permeate - purified wastewater 20%

.. 1st Students Meeting Waterfriend Suspended particles before microfiltration in wastewater, after primary treatment, after microfiltration in retentate and permeate - purified wastewater 50%

1st Students Meeting Waterfriend Research conducted in this paper has shown advantages of use of ceramic membranns with pore diameter of 200 nm, as part of the separation of wastewater treatmen Conclusion

.. 1st Students Meeting Waterfriend Presentation/lecture has been produced with the financial assistance of the European Union. The content of the presentation/lecture is the sole responsibility of University of Novi Sad, Faculty of Technology and can under no circumstances be regarded as reflecting the position of the European Union and/or the Managing Authority. Thanks for your attention