Predicting Screw Press Performance

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This paper provides guidelines for operational and performance parameters of screw press applications in form of a number of correlations such as cake solids dependent on volatile solids. Using a multitude of correlations, it is possible to reliably predict the relevant operational parameters for screw press applications without the need to perform individual and extensive pilot testing. Pilot testing costs can be saved. The presented results also permit agreement of flexible performance guarantees dependent on changing sludge characteristics. These characteristics can be determined with a simple bench test.

The results show excellent performance of the Q-type screw press for many applications. Screw presses perform particularly well where the sludge has a good structural quality, i.e. where it can take high pressure without disintegration of its floc structure.

Keywords: Sludge dewatering; screw press

Document Type: Research Article


Publication date: January 1, 2011

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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