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The NEORSD's Progressive Approach for Sustainable Biosolids Management

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Abstract:

In January 2005, the Northeast Ohio Regional Sewer District's (NEORSD's) Board of Trustees approved a long-term Residuals Management Plan for its three wastewater treatment plants. This Plan recommended replacement of the existing multiple hearth biosolids (sewage sludge) incinerators located at the Southerly Wastewater Treatment Center (WWTC) with new state-of-the-art fluidized bed incinerators. Southerly's fluidized bed incineration project originally consisted of the construction of a new Biosolids Handling and Incineration Building to house three new fluidized bed incineration systems, nine new high solids dewatering centrifuges, and a biosolids truck loading facility.

In August 2008, an independent group of biosolids management experts was asked by the NEORSD to determine whether fluidized bed incineration was still the most viable, cost-effective way to manage Southerly's biosolids on a long-term basis.

This paper presents detailed information on the Independent Expert analyses, findings, and recommendations developed during a Validation Workshop, information on the Southerly WWTC's new renewable energy system and the positive impact that this project will have on reducing Southerly's greenhouse gas (GHG) emissions.

Keywords: Biosolids Management; Fluidized Bed Incinerators; Greenhouse Gas Emissions; Northeast Ohio Regional Sewer District; Renewable Energy; Residuals Management; Sewage Sludge Management; Validation Workshop

Document Type: Research Article

DOI: https://doi.org/10.2175/193864710802767713

Publication date: 2010-01-01

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