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
cg.contributor.affiliationInternational Water Management Instituteen
cg.contributor.affiliationAddis Ababa Universityen
cg.contributor.affiliationNewcastle Universityen
cg.contributor.donorAddis Ababa Water and Sewerage Authority (AAWSA)en
cg.contributor.donorGlobal Challenges Research Fund (GCRF)en
cg.contributor.donorCGIAR Trust Funden
cg.contributor.initiativeOne Health
cg.coverage.countryEthiopia
cg.coverage.iso3166-alpha2ET
cg.coverage.subregionAddis Ababa
cg.creator.identifierAlemseged Tamiru Haile: 0000-0001-8647-2188
cg.identifier.doihttps://doi.org/10.2166/washdev.2025.093en
cg.identifier.iwmilibraryH053621
cg.identifier.projectIWMI - D-0247
cg.isijournalISI Journalen
cg.issn2043-9083en
cg.issue2en
cg.journalJournal of Water, Sanitation and Hygiene for Developmenten
cg.reviewStatusPeer Reviewen
cg.volume15en
dc.contributor.authorHaileselassie, M. M.en
dc.contributor.authorMohamed, J.en
dc.contributor.authorHaile, Alemseged Tamiruen
dc.contributor.authorHiruy, A. M.en
dc.contributor.authorAcharya, K.en
dc.contributor.authorWerner, D.en
dc.date.accessioned2025-03-03T07:18:39Zen
dc.date.available2025-03-03T07:18:39Zen
dc.identifier.urihttps://hdl.handle.net/10568/173467
dc.titlePerformance of four wastewater treatment plants serving Ethiopia’s capital city, Addis Ababaen
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
dcterms.accessRightsOpen Access
dcterms.available2025-01-16
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
dcterms.extent127-138.en
dcterms.issued2025-02-01
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherIWA Publishingen
dcterms.subjectwastewater treatment plantsen
dcterms.subjectperformance assessmenten
dcterms.subjecteconomic analysisen
dcterms.subjectenergy demanden
dcterms.subjecttechnologyen
dcterms.subjectsanitationen
dcterms.subjectsustainabilityen
dcterms.subjectwater qualityen
dcterms.subjectcostsen
dcterms.subjectinfrastructureen
dcterms.typeJournal Article

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