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Residuals Management Program for Orleans and St. Bernard Parishes

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This paper elucidates a study assessing both short-term and long-term plans for the residuals management for wastewater treatment plants in Orleans and St. Bernard Parishes. Before Hurricane Katrina, Orleans was incinerating their municipal sludge at the Eastbank Plant and disposing the dewatered ash to the landfill. St. Bernard Parish was aerobically digesting their waste water residuals and land farming these Class B disinfected biosolids. In 1994, a study looking at Orleans Parish residuals management plan after the enactment of the 503 regulations investigated the possible beneficial uses and noted the usage of Class B disinfected biosolids as a soil amender in sugar cane fields, citrus orchards and pasture lands, but Orleans Parish stayed with incineration to high furl costs and negative public perception.

In our most recent review of the residuals management plan, the possible upgrading of the plan has investigated the sustainable beneficial reuse options such as commercial fertilizer production, sediment amender for dredge sediment for wetlands, landfill cover for interim option and alkaline stabilization/disinfection for amending lead and arsenic contaminated soils. The final options will depend on the optimum beneficial use related to regional needs and potential liability.
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Keywords: Class A Disinfected/Stabilized Biosolids; Commercial Fertilizer; Landfill Cover; Remediating Soils; Value-Added Products; Wetland Amender; Wetlands Remediation

Document Type: Research Article

Publication date: 2009-01-01

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