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A review on rotary generators of hydrodynamic cavitation for wastewater treatment and enhancement of anaerobic digestion process
ID Blagojevič, Marko (Author), ID Rak, Gašper (Author), ID Bizjan, Benjamin (Author), ID Kolbl Repinc, Sabina (Author)

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Abstract
The issue of ever-increasing amounts of waste activated sludge (WAS) produced from biological wastewater treatment plants (WWTPs) is pointed out. WAS can be effectively reduced in the anaerobic digestion (AD) process, where methanogens break down organic matter and simultaneously produce biogas in the absence of oxygen, mainly methane and CO2 . Biomethane can then be effectively used in gas turbines to produce electricity and power a part of WWTPs. Hydrodynamic cavitation (HC) has been identified as a potential technique that can improve the AD process and enhance biogas yield. Rotary generators of hydrodynamic cavitation (RGHCs) that have gained considerable popularity due to their promising results and scalability are presented. Operation, their underlying mechanisms, parameters for performance evaluation, and their division based on geometry of cavitation generation units (CGUs) are presented. Their current use in the field of wastewater treatment is presented, with the focus on WAS pre/treatment. In addition, comparison of achieved results with RGHCs relevant to the enhancement of AD process is presented.

Language:English
Keywords:wastewater treatment, waste activated sludge, anaerobic digestion, biomethane, rotary generator of hydrodynamic cavitation
Work type:Article
Typology:1.02 - Review Article
Organization:FGG - Faculty of Civil and Geodetic Engineering
Publication status:Published
Publication version:Version of Record
Year:2023
Number of pages:27 str.
Numbering:Vol. 11, iss. 2, art. 514
PID:20.500.12556/RUL-146365 This link opens in a new window
UDC:628.3
ISSN on article:2227-9717
DOI:10.3390/pr11020514 This link opens in a new window
COBISS.SI-ID:141131011 This link opens in a new window
Publication date in RUL:25.05.2023
Views:718
Downloads:74
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Record is a part of a journal

Title:Processes
Shortened title:Processes
Publisher:MDPI
ISSN:2227-9717
COBISS.SI-ID:523353113 This link opens in a new window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:25.05.2023

Secondary language

Language:Slovenian
Title:Pregled rotacijskih generatorjev hidrodinamične kavitacije za čiščenje odpadne vode in izboljšanje procesa anaerobne presnove
Keywords:hidrodinamska kavitacija, odpadna voda, aktivno blato, anaerobna presnova, biometan, rotacijski generator hidrodinamske kavitacije

Projects

Funder:ARRS - Slovenian Research Agency
Project number:P2-0180
Name:Vodarstvo in geotehnika: orodja in metode za analize in simulacije procesov ter razvoj tehnologij

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