Operating pH and feed composition as factors affecting stability of aerobic granular sludge

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dc.contributor.authorLashkarizadeh, Monireh
dc.contributor.examiningcommitteeYuan, Qiuyan (Civil Engineering) Cenkowski, Stefan (Biosystems Engineering)en_US
dc.contributor.supervisorOleszkiewicz, Jan A. (Civil Engineering)en_US
dc.date.accessioned2015-03-20T18:17:34Z
dc.date.available2015-03-20T18:17:34Z
dc.date.issued2015-03en_US
dc.degree.disciplineCivil Engineeringen_US
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.abstractIn this study the stability and nutrient removal performance of aerobic granules under variable operating pH and variable growth medium was investigated. The results indicated that alkaline pH (pH=9) inhibited nitrogen and phosphorus removal. Moreover, high pH induced granules breakage and resulted in an increased biomass concentration in the effluent. On the other hand, acidic pH (pH=6) did not have significant impacts on stability and nutrient removal efficiency of granules. Changing the growth medium from acetate-based wastewater to municipal wastewater resulted in loss of biological phosphorus removal while ammonium and COD removal stayed the same. The granules disintegrated during the first two weeks after changing the feed; re-granulation of the biomass was observed after the acclimation of bacteria to the new growth medium. However, the granules breakage did not exert significant impact on settling property of biomass.en_US
dc.description.noteMay 2015en_US
dc.identifier.citationLashkarizadeh, M., Yuan, Q., Oleszkiewicz, J.A., 2015. Influence of carbon source on nutrient removal performance and physical-chemical characteristics of aerobic granular sludge. Environ. Technol. 1–26. doi:10.1080/09593330.2015.1023364en_US
dc.identifier.urihttp://hdl.handle.net/1993/30304
dc.language.isoengen_US
dc.publisherTaylor & Francisen_US
dc.rightsopen accessen_US
dc.subjectAerobic granulesen_US
dc.subjectStabilityen_US
dc.subjectpHen_US
dc.subjectGrowth mediumen_US
dc.titleOperating pH and feed composition as factors affecting stability of aerobic granular sludgeen_US
dc.typemaster thesisen_US
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