Journal article

High pressure dewatering rolls: Comparison of a novel prototype to existing industrial technology

Eric Hofgen, Davide Collini, Robin J Batterham, Peter J Scales, Anthony D Stickland

Chemical Engineering Science | Elsevier Ltd | Published : 2019


The optimisation of solid-liquid separation or dewatering processes for more efficient operation and reuse of material streams is of high importance. Suspension dewatering aims to increase the solids concentration and exhibits two limitations: the dewatering extent and the rate. A novel dewatering device, called High Pressure Dewatering Rolls (HPDR), has been developed. It combines shear and compression while maintaining a short filtration length between the rollers. The HPDR challenges the limitations of dewatering processes through the application of high pressures and induced shear to aid the extent of dewatering, and a short filtration length to allow fast dewatering. A prototype HPDR i..

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Awarded by Victorian Government DSDBI Technology Voucher

Funding Acknowledgements

The authors would like to acknowledge the funding of the project through the University of Melbourne and the Particulate Fluids Processing Centre (PFPC) in Melbourne who provided access to facilities and supply of equipment. The prototype development and initial studies were funded by the Carlton Connect Initiative Fund together with Visy Industries and the Victorian Government DSDBI Technology Voucher (TVP-TDev131A.1) in collaboration with MDB Energy. Further, the industrial partners are thanked for their collaboration in providing samples, namely Australian Paper and Melbourne Water for the HPDR testing of industrial suspensions. The benchmarking study has been funded by the Aqseptence Group Srl, Italy.