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http://dx.doi.org/10.17137/Korrae.2013.21.2.71

Phosphorus removal from dewatering centrate in wastewater treatment by struvite formation  

Kim, Sang-Hyoun (Department of Environmental Engineering, Daegu University)
Park, Jong-Hun (Department of Environmental Engineering, Daegu University)
Ju, Hyun-Jun (Department of Environmental Engineering, Daegu University)
Publication Information
Journal of the Korea Organic Resources Recycling Association / v.21, no.2, 2013 , pp. 71-78 More about this Journal
Abstract
This study examined the feasibility of phosphorus removal from dewatering centrate/filtrate in wastewater treatment by struvite formation. Since dewatering centrate/filtrate obtained after anaerobic digestion contains a high content of ammonia, magesium addition and pH adjustment could remove phosphorous. The optimum magnesium dose, reaction time, settling time, and pH value was found at 2 mol Mg/mol $PO_4^{3-}$, 10 min, 120 min, and 8.5, respectively. A bench-scale continuous operation at the optimum condition showed 80% of total phosphorus removal and 82% of phosphate removal in dewatering centrate. The elemental composition and crystal structure of the chemical precipitate was similar to the reported values of struvite.
Keywords
Phosphorus; Dewatering centrate; Recycle; struvite;
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Times Cited By KSCI : 1  (Citation Analysis)
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