Performance of four wastewater treatment plants serving Ethiopia’s capital city, Addis Ababa

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cg.contributor.affiliationAddis Ababa Water and Sewerage Authority (AAWSA)en_US
cg.contributor.affiliationInternational Water Management Instituteen_US
cg.contributor.affiliationAddis Ababa Universityen_US
cg.contributor.affiliationNewcastle Universityen_US
cg.contributor.donorAddis Ababa Water and Sewerage Authority (AAWSA)en_US
cg.contributor.donorGlobal Challenges Research Fund (GCRF)en_US
cg.contributor.donorCGIAR Trust Funden_US
cg.contributor.initiativeOne Healthen_US
cg.coverage.countryEthiopiaen_US
cg.coverage.iso3166-alpha2ETen_US
cg.coverage.subregionAddis Ababaen_US
cg.creator.identifierAlemseged Tamiru Haile: 0000-0001-8647-2188en_US
cg.identifier.doihttps://doi.org/10.2166/washdev.2025.093en_US
cg.identifier.iwmilibraryH053621en_US
cg.identifier.projectIWMI - D-0247en_US
cg.isijournalISI Journalen_US
cg.issn2043-9083en_US
cg.issue2en_US
cg.journalJournal of Water, Sanitation and Hygiene for Developmenten_US
cg.reviewStatusPeer Reviewen_US
cg.volume15en_US
dc.contributor.authorHaileselassie, M. M.en_US
dc.contributor.authorMohamed, J.en_US
dc.contributor.authorHaile, Alemseged Tamiruen_US
dc.contributor.authorHiruy, A. M.en_US
dc.contributor.authorAcharya, K.en_US
dc.contributor.authorWerner, D.en_US
dc.date.accessioned2025-03-03T07:18:39Zen_US
dc.date.available2025-03-03T07:18:39Zen_US
dc.identifier.urihttps://hdl.handle.net/10568/173467en_US
dc.titlePerformance of four wastewater treatment plants serving Ethiopia’s capital city, Addis Ababaen_US
dcterms.abstractThere is an urgent need to expand wastewater treatment on the African continent. To help choose appropriate technologies for this task, we evaluated the efficiency, energy and chemical demands, and costs of four wastewater treatment plants (WWTPs). These plants represent the main wastewater treatment technologies operated by the Addis Ababa Water and Sewerage Authority (AAWSA): waste stabilization pond (WSP), anaerobic baffled reactor (ABR), up-flow anaerobic sludge blanket with trickling filter (UASB-TF), and membrane bioreactor (MBR) technologies. Principal component analysis revealed that season significantly impacts the raw and treated wastewater quality (ANOSIM, R ¼ 0.3126, p ¼ 0.001), while the type of treatment plant did not significantly affect the measured effluent characteristics (ANOSIM, R ¼ 0.1235, p ¼ 0.2000). In contrast, construction and operational costs, as well as energy and chemical demands per m3 of treated wastewater, varied starkly between the WWTPs. Total costs of wastewater treatment in 2022 ranged from $0.045 to 0.546 per m3 of wastewater treated, being 6–12 times higher for MBR compared with the other WWTP technologies. Real-world performance data as reported in this study are essential for choosing appropriate technologies that meet Africa’s wastewater treatment needs.en_US
dcterms.accessRightsOpen Accessen_US
dcterms.available2025-01-16en_US
dcterms.bibliographicCitationHaileselassie, M. M.; Mohamed, J.; Haile, Alemseged Tamiru; Hiruy, A. M.; Acharya, K.; Werner, D. 2025. Performance of four wastewater treatment plants serving Ethiopia’s capital city, Addis Ababa. Journal of Water, Sanitation and Hygiene for Development, 15(2):127-138. [doi: https://doi.org/10.2166/washdev.2025.093]en_US
dcterms.extent127-138.en_US
dcterms.issued2025-02-01en_US
dcterms.languageenen_US
dcterms.licenseCC-BY-4.0en_US
dcterms.publisherIWA Publishingen_US
dcterms.subjectwastewater treatment plantsen_US
dcterms.subjectperformance assessmenten_US
dcterms.subjecteconomic analysisen_US
dcterms.subjectenergy demanden_US
dcterms.subjecttechnologyen_US
dcterms.subjectsanitationen_US
dcterms.subjectsustainabilityen_US
dcterms.subjectwater qualityen_US
dcterms.subjectcostsen_US
dcterms.subjectinfrastructureen_US
dcterms.typeJournal Articleen_US

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