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CONTINUOUSLY BACKWASHING FILTRATION OF PRIMARY EFFLUENT WITH ALUM ADDITION

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Abstract:

Sand filtration of wastewater has commonly been used for polishing of municipal secondary effluents and in tertiary applications (Metcalf and Eddy 1991). Filtration of primary effluent has not been used successfully in the past due to the high solids and high oil content of primary effluent (Garzonetti 1984). The original technology for filtration of primary and secondary effluents mimicked that of conventional water treatment sand filtration. The high solids and oil content of primary effluent tends to plug up conventional sand filters quickly, resulting in short run times and requires the use of large amounts of backwash water. However, new developments in primary effluent filtration (PEF), specifically continuously backwashing filtration (CBF), has made this unit process more efficient as well as more desirable (Garzonetti 1984).

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864701802779666

Publication date: January 1, 2001

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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 These proceedings are not peer reviewed.

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