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A fluidized layer of granular material used for the separation of particulate impurities in drinking water treatment
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SYSNO ASEP 0360312 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title A fluidized layer of granular material used for the separation of particulate impurities in drinking water treatment Author(s) Pivokonský, Martin (UH-J) SAI, ORCID, RID
Bubáková, Petra (UH-J) SAI, ORCID, RID
Hnaťuková, Petra (UH-J) RID, SAI, ORCID
Knesl, Bohuslav (UH-J)Source Title Journal of Hydrology and Hydromechanics. - : Ústav pro hydromechaniku AV ČR, v. v. i.. - : Ústav hydrológie SAV - ISSN 0042-790X
Roč. 59, č. 2 (2011), s. 95-106Number of pages 12 s. Language eng - English Country SK - Slovakia Keywords aggregation ; destabilization ; fluidized layer ; separation ; water treatment Subject RIV BK - Fluid Dynamics R&D Projects IAA200600902 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z20600510 - UH-J (2005-2011) UT WOS 000294700300003 EID SCOPUS 80052383217 DOI 10.2478/v10098-011-0008-6 Annotation The paper deals with the application of a fluidized layer of granular material (FLGM) for the direct separation of impurities in drinking water treatment. Further, it investigates the effect of operation parameters (grain size, arrangement, velocity gradient, dose of destabilisation reagent and temperature) on the aggregation (α) and separation efficiency (φ) of FLGM. The highest φ was achieved, when the particles entered FLGM immediately after the dosing of the destabilisation reagent, when they had the lowest degree of aggregation. The maximal value of φ was reached at G~250 s-1 The highest value of φ(Al) was achieved at T=5 °C, but the effect of T on φ(TOC) was not very significant. The maximal separation efficiency reached the values φ(Al)=0.81 at the optimal dosage D(Al)=1.55 mg/L and φ(TOC)=0.31 at the dosage D(Al)=2.36 mg/L. The separation of impurities proceeded via their interception on the FLGM grains in a form of solid, water-free shell (ρ=2450 kg/m3). Workplace Institute of Hydrodynamics Contact Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Year of Publishing 2012
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