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Project title

Demonstration of an adaptation to the activated sludge process; for reduced sludge generation.

Primary Funding Agency

Environmental Protection Agency

Co-Funding Organisation(s)

n/a

Lead Organisation

Queen's University Belfast (QUB)

Lead Applicant

Ciar�n Prunty

Project Abstract

This desk-scale study will verify the performance of a lab-scale activated sludge process operated under modified conditions to reduce the generation of sludge biomass. Previous microbiological studies for increased phosphate removal observed reduced sludge generation; it is thought elevated biomass metabolic rates led to increased substrate volatilisation and reduced incorporation of carbon into cellular biomass. This study will enable data collection of process parameters that are standard to wastewater engineering operations, which are crucial to the scale up of this technology, and will enable the development of concrete plans for on-site demonstration of the process at two wastewater treatment plants. Expected outputs include:? Construction and operation of a lab-scale two-channel activated sludge pilot plant allowing parallel operation of standard and modified operational conditions.Quantification of reduced sludge generation under modified conditions compared to standard conditions. Demonstration of process stability and effluent quality. Report of performance at standard engineering process parameters; which is necessary for scale-up design. Presentation of results to industry though seminars; publication in peer-reviewed journals. Identification and assessment of target demonstration sites. Production of a technology-transfer plan encompassing preparation for on-site demonstration and full-scale implementation at specific industrial and municipal sites.

Grant Approved

�99,041.90

Research Hub

Green and Circular Economy

Research Theme

Waste and Resources Management

Start Date

11/08/2008

Initial Projected Completion Date

11/10/2009