The removal of phosphorus from reject water of municipal wastewater treatment plant using iron ore

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dc.contributor.authorGuo, Cheng Hong
dc.contributor.authorStabnikov, Victor
dc.contributor.authorKuang, Shengli
dc.contributor.authorIvanov, Volodymyr M.
dc.date.accessioned2013-02-19T15:18:10Z
dc.date.available2013-02-19T15:18:10Z
dc.date.issued2009
dc.description.abstractBACKGROUND: Reject water (return liquor) from dewatering of anaerobically digested activated sludge in municipal wastewater treatment plants contains from 10 to50%of the phosphorus load when being recycled to the aeration tank. Phosphorus removal from reject water could be an effective way to decrease phosphorus loads entering the aeration tank. An innovative approach involves the replacement of iron salts, which are commonly used for phosphorus removal, with ferrous ions produced by iron-reducing bacteria from iron ore. The aim of the research was to examine the feasibility of phosphorus removal from return liquor using bioreduction of iron ore.RESULTS: Ferrous production, phosphate and organic carbon removal rates were determined as a function of different iron ore particle sizes in batch experiments. Iron-reducing bacteria ensured the production of ferrous ions from iron ore up to concentrations of 550 mg L−1. The ferrous production rate was linearly dependent on the calculated specific surface area of the iron ore particles. The phosphorus concentration in the reject water was reduced by 90% during bioreduction of iron ore. The phosphorus removal rate did not depend on specific surface area of iron ore particles when the particle size of iron ore was smaller than 7 mm. The organic carbon removal rate did not seem to be dependent on iron ore particle size. CONCLUSION: Removal of phosphate using iron ore can be more economical than conventional chemical precipitation of phosphate using iron salts because of the lower cost of iron ore.uk_UK
dc.identifier.citationThe removal of phosphorus from reject water of municipal wastewater treatment plant using iron ore / C. Guo, V. Stabnikov, S. Kuang, V. Ivanov // Journal of Chemical Technology and Biotechnology. – 2009. – Vol. 84, № 1. – P. 78–82.uk_UK
dc.identifier.urihttps://dspace.nuft.edu.ua/handle/123456789/6431
dc.language.isoenuk_UK
dc.subjectiron oreuk_UK
dc.subjectiron-reducing bacteriauk_UK
dc.subjectphosphorus removaluk_UK
dc.subjectreject wateruk_UK
dc.subjectзалізна рудаuk_UK
dc.subjectзалізо-відновлювальні бактеріїuk_UK
dc.subjectвидалення фосфоруuk_UK
dc.subjectвідхідна водаuk_UK
dc.subjectжелезная рудаuk_UK
dc.subjectжелезо-восстанавливающие бактерииuk_UK
dc.subjectудаление фосфораuk_UK
dc.subjectотходная водаuk_UK
dc.subjectкафедра біотехнології і мікробіології
dc.titleThe removal of phosphorus from reject water of municipal wastewater treatment plant using iron oreuk_UK
dc.typeArticleuk_UK

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