A fluidized layer of granular material used for the separation of particulate impurities in drinking water treatment
Result description
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 (?) and separation efficiency (?) of FLGM. The highest ? 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 ? was reached at G250 s-1 The highest value of ?(Al) was achieved at T=5 °C, but the effect of T on ?(TOC) was not very significant. The maximal separation efficiency reached the values ?(Al)=0.81 at the optimal dosage D(Al)=1.55 mg/L and ?(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 (?=2450 kg/m3).
Keywords
aggregationdestabilizationfluidized layerseparationwater treatment
The result's identifiers
Result code in IS VaVaI
Result on the web
DOI - Digital Object Identifier
Alternative languages
Result language
angličtina
Original language name
A fluidized layer of granular material used for the separation of particulate impurities in drinking water treatment
Original language description
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 (?) and separation efficiency (?) of FLGM. The highest ? 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 ? was reached at G250 s-1 The highest value of ?(Al) was achieved at T=5 °C, but the effect of T on ?(TOC) was not very significant. The maximal separation efficiency reached the values ?(Al)=0.81 at the optimal dosage D(Al)=1.55 mg/L and ?(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 (?=2450 kg/m3).
Czech name
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Czech description
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Classification
Type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BK - Liquid mechanics
OECD FORD branch
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Result continuities
Project
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Hydrology and Hydromechanics
ISSN
0042-790X
e-ISSN
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Volume of the periodical
59
Issue of the periodical within the volume
2
Country of publishing house
SK - SLOVAKIA
Number of pages
12
Pages from-to
95-106
UT code for WoS article
000294700300003
EID of the result in the Scopus database
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Basic information
Result type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP
BK - Liquid mechanics
Year of implementation
2011