Dynamics of Nitrogen Transformation and Removal in a Pilot High Rate Pond

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dc.contributor.authorMayo, Aloyce W.
dc.contributor.authorHanai, Emmanuel E.
dc.date.accessioned2016-05-24T08:58:43Z
dc.date.available2016-05-24T08:58:43Z
dc.date.issued2014
dc.description.abstractThe transformation and removal of nitrogen was studied in a pilot high rate pond with a surface area of 10.2 m2 and water depth of 60 cm. The pilot unit received wastewater from an existing field scale primary facultative pond at the University of Dar es Salaam. Wastewater samples were collected from the influent and effluent of high rate pond and were analyzed for physical-chemical parameters in the laboratory and in situ. An appropriate model complexity was selected, from which a conceptual model was then developed to model various processes in the system using STELLA 6.0.1 software. The study demonstrated that dominant nitrogen transformation processes in HRP were nitrification and denitrification, which transformed 0.95 and 0.87 gN/m2∙d, respectively. These were followed by mineralization (0.37 gN/m2∙d), ammonia uptake by microorganisms (0.34 gN/m2∙d), volatilization (0.30 gN/m2∙d), sedimentation (0.24 gN/m2∙d), and regeneration (0.15 gN/m2∙d). Uptake of nitrate was not observed because of microorganisms preference for ammonia, which was abundant in the pond. The major nitrogen transformation mechanisms in high rate pond were denitrification, net sedimentation and volatilization, which accounted for 69.1%, 7.1% and 23.8% of the total permanent removal mechanisms of nitrogen in High Rate Pond.en_US
dc.identifier.citationMayo, A.W. and Hanai, E.E., 2014. Dynamics of nitrogen transformation and removal in a pilot high rate pond. Journal of Water Resource and Protection, 6(5), p.433.en_US
dc.identifier.doi10.4236/jwarp.2014.65043
dc.identifier.urihttp://hdl.handle.net/20.500.11810/2217
dc.language.isoenen_US
dc.publisherScientific Researchen_US
dc.subjectHigh Rate Pondsen_US
dc.subjectNitrificationen_US
dc.subjectDenitrificationen_US
dc.subjectNitrogen transformationen_US
dc.subjectNitrogen removalen_US
dc.titleDynamics of Nitrogen Transformation and Removal in a Pilot High Rate Ponden_US
dc.typeJournal Article, Peer Revieweden_US
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