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Biosolids Handling Improvements at Metro Syracuse WWTP

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The 84.2 mgd Metropolitan Syracuse Wastewater Treatment Plant (Metro) has recently undergone a major upgrade to provide advanced ammonia-nitrogen and phosphorus removal. Seasonal limits for ammonia are 1.2 mg/L NH3 summer and 2.4 mg/L NH3 winter, and the limit for phosphorus is a 12-month rolling average of 0.12 mg/L. Biological aerated filters (BAFs) by Krüger were added for ammonia removal and the ballasted flocculated settling process, ACTIFLO (also by Krüger) was added for phosphorus removal.

To address the increased biosolids produced at Metro, Environmental Engineering Associates, LLP (EEA – a joint venture of Stearns & Wheler, LLC, O'Brien & Gere, and Blasland, Bouck & Lee [now ARCADIS]) was retained to develop the necessary biosolids handling improvements.

The project includes:

Replacing existing belt filter press dewatering system with high solids centrifuges

Installing gravity belt thickeners (GBTs) to thicker WAS

Provide sludge blend tanks to blend thickened primary sludge and thickened WAS prior to digestion

Provide a cogeneration system that utilizes digester gas to generate electricity and recover heat.

Document Type: Research Article


Publication date: January 1, 2008

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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 These proceedings are not peer reviewed.

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