Record nummer 2047254
Titel artikel Characterization of sulfate-reducing granular sludge in the SANI proces
Auteur(s) Hao, T. ; Wei, L. ; Lu, H. ; Chui, H. ; Mackey, H.R. ; Loosdrecht, M.C.M. van ; Chen, G.
Tijdschrifttitel Water research : the journal of the International Association on Water Quality
Deel(Jaar)Nummer 47(2013)19
Paginering 7042 - 7052
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Trefwoorden (cab) afvalwaterbehandeling / huishoudens / zout water / rioolwaterzuivering / slibzuivering / granulering / sulfaat reducerende bacteriën / sulfaatreductie / kustgebieden / hongkong
Rubrieken Afvalwaterbehandeling
Publicatie type Artikel
Taal Engels
Toelichting (Engels) Hong Kong practices seawater toilet flushing covering 80% of the population. A sulfur cycle-based biological nitrogen removal process, the Sulfate reduction, Autotrophic denitrification and Nitrification Integrated (SANI) process, had been developed to close the loop between the hybrid water supply and saline sewage treatment. To enhance this novel process, granulation of a Sulfate-Reducing Up-flow Sludge Bed (SRUSB) reactor has recently been conducted for organic removal and provision of electron donors (sulfide) for subsequent autotrophic denitrification, with a view to minimizing footprint and maximizing operation resilience. This further study was focused on the biological and physicochemical characteristics of the granular sulfate-reducing sludge. A lab-scale SRUSB reactor seeded with anaerobic digester sludge was operated with synthetic saline sewage for 368 days. At 1 h nominal hydraulic retention time (HRT) and 6.4 kg COD/m3-d organic loading rate, the SRUSB reactor achieved 90% COD and 75% sulfate removal efficiencies.
Betrokken instanties Technische Universiteit Delft, Vakgroep Bioprocestechnologie
KWR, Watercycle Research Institute
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