Cross-border network for knowledge transfer and innovative development in wastewater treatment

WATERFRIENDHUSRB/1203/221/196

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Dairy wastewater treatment by membrane filtration

Ádám VeszprémiBioengineer BSc student

Supervisors:Dr. Cecilia Hodúr

Dr. Szabolcs Kertész

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Introduction Dairy industry Generates dairy wastewater

– Huge effluent volumes – High organic content

Membrane techniques

Effective alternatives: High flux and rejection rates; no additives Drawbacks: Fouling & retentate utilisation

My scopes

Materials and methodsMembranes NMWL [Da] Material

Ultrafiltration 7000 PES

Nanofiltration 240 TFC

7.8 cm500 cm2 active membrane filtration

area

UF NF

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Materials and

MethodsET 108 COD digester & PC

CheckIt photometer (Lovibond, Germany)

potassium-dichromate method

Teledyne tekmar TOC torch analyzer (USA)

Experimental parameters: q

Vrec=15 L min-1; t=50±1°C

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Results and discussions: Power Demand

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Results and discussions: Feed and permeate values

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Concentration experiments

Experimental parameters: q

Vrec=15 L min-1; t=50±1°C

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Membrane Porous fouling Gel-layer

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Conclusions

Dairy wastewater purification by VSEP UF and NF:- efficient organic load decreasing- significant gel layer distruction by vibration- lower power consumption

-Hybrid experiments:- different pretreatments (e.g.: ultrasonic, ozone treatment)

- posttreatment methods (e.g.: biogas product)-fouled membranes characterisation

by contact angle and SEM measurements

Future aims

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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.

Last slide: Thank you for your kindly attention!Last slide: Thank you for your kindly attention!

AcknowledgementThe authors are grateful to the project GVOP-3.2.1-2004-04/0252/3.0 and the

RET07/2005 project.