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Magnesium Change During Anaerobic Biosolids Dewatering

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During the startup of a dewatering plant processing anaerobically digested biosolids struvite (MgNH4PO4•6H2O) precipitation developed in the supernatant handling system. Because of this a program to monitor the biosolids and supernatant was initiated. This program analyzed the biosolids and supernatant, both unfiltered and filtered, for the components of struvite. This poster examines the concentration of struvite components before and after dewatering, both filtered and unfiltered. Review of these data shows there was an increase in the magnesium (Mg2+) concentration between the filtered biosolids and filtered supernatant samples. This increase in magnesium concentration is a factor in struvite precipitation in dewatered anaerobic biosolids supernatant piping and equipment.

Document Type: Research Article


Publication date: 2001-01-01

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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 These proceedings are not peer reviewed.

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