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Author (up) Crutchik, D.; Morales, N.; Vazquez-Padin, J.R.; Garrido, J.M.
Title Enhancement of struvite pellets crystallization in a fullscale plant using an industrial grade magnesium product Type
Year 2017 Publication Water Science And Technology Abbreviated Journal Water Sci. Technol.
Volume 75 Issue 3 Pages 609-618
Keywords industrial magnesium hydroxide; municipal wastewater; phosphorus recovery; struvite pellets
Abstract A full-scale struvite crystallization system was operated for the treatment of the centrate obtained from the sludge anaerobic digester in a municipal wastewater treatment plant. Additionally, the feasibility of an industrial grade Mg(OH) (2) as a cheap magnesium and alkali source was also investigated. The struvite crystallization plant was operated for two different periods: period I, in which an influent with low phosphate concentration (34.0 mg P . L (-1)) was fed to the crystallization plant; and period II, in which an influent with higher phosphate concentration (68.0 mg P . L (-1)) was used. A high efficiency of phosphorus recovery by struvite crystallization was obtained, even when the effluent treated had a high level of alkalinity. Phosphorus recovery percentage was around 77%, with a phosphate concentration in the effluent between 10.0 and 30.0 mg P .L- 1. The experiments gained struvite pellets of 0.5- 5.0 mm size. Moreover, the consumption of Mg(OH) (2) was estimated at 1.5 mol Mg added . mol P recovered (-1). Thus, industrial grade Mg(OH) (2) can be an economical alternative as magnesium and alkali sources for struvite crystallization at industrial scale.
Address [Crutchik, D.; Garrido, J. M.] Univ Santiago de Compostela, Inst Technol, Dept Chem Engn, Santiago De Compostela 15782, Spain, Email: dafne.crutchik@gmail.com
Corporate Author Thesis
Publisher Iwa Publishing Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0273-1223 ISBN Medium
Area Expedition Conference
Notes WOS:000394350100013 Approved
Call Number UAI @ eduardo.moreno @ Serial 710
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