Scale-up rules for flocculation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F17%3A00313226" target="_blank" >RIV/68407700:21220/17:00313226 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.minpro.2017.08.003" target="_blank" >http://dx.doi.org/10.1016/j.minpro.2017.08.003</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.minpro.2017.08.003" target="_blank" >10.1016/j.minpro.2017.08.003</a>
Alternative languages
Result language
angličtina
Original language name
Scale-up rules for flocculation
Original language description
We present here a study of three baffled tanks, 0.15 m, 0.20m and 0.30min inner diameter, agitated by Rushton turbine, with reference to scaling up the flocculation kinetics. A clay slurry was used as a model wastewater. The experimentswere carried out at mixing intensity 40 W/m3 and clay concentration 0.58 g/L. The model wastewater was flocculated with the Sokoflok 16A organic flocculent (solution 0.1 wt%) in the range of dimensionless flocculent dosage DF from 0.448 to 5.241 mg/g. The flocs that formed were separated bymeans of sedimentation. The operational conditions were designed according to following proposed scale-up rules: i) P/V = const., ii) tF * = N.tF=const., iii)DF * =const. and iv) used=const. Applying the proposed scale-up rules, the flocculation efficiency was found to be practically the same irrespective of vessel size and flocculation dosage. For the given flocculated system and process conditions, the maximum degree of turbidity removal Ze * max=96.1± 0.6% was found for dimensionless flocculation time 1916 ± 5% and dimensionless flocculent dosage DF * =3.128 mg/g ± 8%, regardless of vessel size. The approach to scale-up proposed by Camp (1955) is discussed and criticized in the light of present-day mixing theory, and an explanation is offered of the shortcomings of this approach, and why it gives incorrect scale-up results.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20703 - Mining and mineral processing
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
International Journal of Mineral Processing
ISSN
0301-7516
e-ISSN
1879-3525
Volume of the periodical
167
Issue of the periodical within the volume
august
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
7
Pages from-to
79-85
UT code for WoS article
000412962500010
EID of the result in the Scopus database
2-s2.0-85028467639