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Techno-Economic Assessment of Struvite Phosphorus Recovery from Sewage Sludge Treatment in Sri Lanka

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dc.contributor.author Jayasekara, Thejanie
dc.contributor.author Rathnayake, Mahinsasa
dc.date.accessioned 2022-02-25T04:08:36Z
dc.date.available 2022-02-25T04:08:36Z
dc.date.issued 2021
dc.identifier.citation Jayasekara Thejanie, Rathnayake Mahinsasa (2021), Techno-Economic Assessment of Struvite PhosphorusRecovery from Sewage Sludge Treatment in Sri Lanka, International Conference on Advances in Computing and Technology (ICACT–2021) Faculty of Computing and Technology (FCT), University of Kelaniya, Sri Lanka 98-103 en_US
dc.identifier.uri http://repository.kln.ac.lk/handle/123456789/24503
dc.description.abstract Phosphorous is a nutrient that is considerably available in treated sludge coming out from municipal sewage treatment. In conventional sewage treatment plants, a larger portion of phosphorous remains unrecovered in the treated sludge. In this study, the techno-economic feasibility of phosphorous recovery in the form of struvite from treated sewage sludge is assessed for an already functioning sewage treatment plant in Sri Lanka. For comparative assessment between possible struvite phosphorous recovery technologies, two scenarios are considered, i.e., Scenario (A): wet chemical method with incineration and Scenario (B): wet chemical method without incineration. Composition data of treated sewage sludge is obtained from an existing sewage treatment plant, and design data for conceptualized struvite phosphorous recovery processes are retrieved from the published literature. According to the assessment results, scenario (A) provides a greater phosphorous recovery of 16.2 kg/day. However, the total energy consumption of 50,907.04 MJ/day in Scenario (A) is approximately six times higher than that of Scenario (B). The economic parameters, as well as the freshwater eutrophication impact reduction potentials for both scenarios are further analyzed. The most appropriate struvite phosphorous recovery technology for an existing or future sewage treatment plant in terms of technoeconomic aspects are discussed. en_US
dc.publisher Faculty of Computing and Technology (FCT), University of Kelaniya, Sri Lanka en_US
dc.subject Struvite phosphorous recovery, Sewage sludge treatment, Techno-economic assessment en_US
dc.title Techno-Economic Assessment of Struvite Phosphorus Recovery from Sewage Sludge Treatment in Sri Lanka en_US


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