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Investigation into cavitational intensity and COD reduction performance of the pinned disc reactor with various rotor-stator arrangements
ID
Gostiša, Jurij
(
Avtor
),
ID
Zupanc, Mojca
(
Avtor
),
ID
Dular, Matevž
(
Avtor
),
ID
Širok, Brane
(
Avtor
),
ID
Levstek, Marjetka
(
Avtor
),
ID
Bizjan, Benjamin
(
Avtor
)
PDF - Predstavitvena datoteka,
prenos
(6,47 MB)
MD5: 5CE91A8881350D30CEF6080B82FC837A
URL - Izvorni URL, za dostop obiščite
https://www.sciencedirect.com/science/article/pii/S135041772100211X
Galerija slik
Izvleček
In this study, the hydrodynamic cavitation and wastewater treatment performance of a rotary generator with pin disk for hydrodynamic cavitation are investigated. Various geometrical features and arrangements of rotor and stator pins were evaluated to improve the configuration of the cavitation device. The pilot device used to perform the experiments was upgraded with a transparent cover that allows visualization of the hydrodynamic cavitation in the rotor-stator region with high-speed camera and simultaneous measurement of pressure fluctuations. Based on the hydrodynamic characteristics, three arrangements were selected and evaluated with respect to the chemical effects of cavitation on a 200-liter wastewater influent sample. The experimental results show that the rotational speed and the spacing of the rotor pins have the most significant effect on the cavitation intensity and effectiveness, while the pin diameter and the surface roughness are less significant design parameters. Cavitation intensity increases with pin velocity, but can be inhibited if the pins are arranged too close together. At best configuration, COD was reduced by 31% in 15 liquid passes, consuming 8.2 kWh/kg COD. The number of liquid passes also proved to be an important process parameter for improving the energy efficiency.
Jezik:
Angleški jezik
Ključne besede:
hydrodynamic cavitation
,
wastewater treatment
,
pinned disc reactors
,
flow visualization
,
performance evaluation
Vrsta gradiva:
Članek v reviji
Tipologija:
1.01 - Izvirni znanstveni članek
Organizacija:
FS - Fakulteta za strojništvo
Status publikacije:
Objavljeno
Različica publikacije:
Objavljena publikacija
Leto izida:
2021
Št. strani:
11 str.
Številčenje:
Vol. 77, art. 105669
PID:
20.500.12556/RUL-128668
UDK:
532.528
ISSN pri članku:
1350-4177
DOI:
10.1016/j.ultsonch.2021.105669
COBISS.SI-ID:
70807811
Datum objave v RUL:
22.07.2021
Število ogledov:
981
Število prenosov:
224
Metapodatki:
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Objavi na:
Gradivo je del revije
Naslov:
Ultrasonics Sonochemistry
Skrajšan naslov:
Ultrason. sonochem.
Založnik:
Butterworth-Heinemann, Elsevier Science
ISSN:
1350-4177
COBISS.SI-ID:
707668
Licence
Licenca:
CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
Povezava:
http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
Opis:
Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.
Sekundarni jezik
Jezik:
Slovenski jezik
Ključne besede:
hidrodinamska kavitacija
,
odpadne vode
,
kavitacijski reaktorji
,
turbostroji
,
vizualizacija
,
kemijska potreba po kisiku
,
KPK
,
učinkovitost razgradnje KPK
Projekti
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:
P2-0401
Naslov:
Energetsko strojništvo
Financer:
Drugi - Drug financer ali več financerjev
Program financ.:
University of Ljubljana, UL Innovation Fund
Številka projekta:
820-1/2020-35
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