Cavitation as a Potential Technology for Wastewater Management – An Example of Enhanced Nutrient Release from Secondary Pulp and Paper Mill Sludge

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SEŽUN, Mija ;KOSEL, Janez ;ZUPANC, Mojca ;HOČEVAR, Marko ;VRTOVŠEK, Janez ;PETKOVŠEK, Martin ;DULAR, Matevž .
Cavitation as a Potential Technology for Wastewater Management – An Example of Enhanced Nutrient Release from Secondary Pulp and Paper Mill Sludge. 
Strojniški vestnik - Journal of Mechanical Engineering, [S.l.], v. 65, n.11-12, p. 641-649, november 2019. 
ISSN 0039-2480.
Available at: <https://www.sv-jme.eu/article/cavitation-as-a-potential-technology-for-wastewater-management-an-example-of-enhanced-nutrient-release-from-secondary-pulp-and-paper-mill-sludge/>. Date accessed: 29 sep. 2021. 
doi:http://dx.doi.org/10.5545/sv-jme.2019.6328.
Sežun, M., Kosel, J., Zupanc, M., Hočevar, M., Vrtovšek, J., Petkovšek, M., & Dular, M.
(2019).
Cavitation as a Potential Technology for Wastewater Management – An Example of Enhanced Nutrient Release from Secondary Pulp and Paper Mill Sludge.
Strojniški vestnik - Journal of Mechanical Engineering, 65(11-12), 641-649.
doi:http://dx.doi.org/10.5545/sv-jme.2019.6328
@article{sv-jmesv-jme.2019.6328,
	author = {Mija  Sežun and Janez  Kosel and Mojca  Zupanc and Marko  Hočevar and Janez  Vrtovšek and Martin  Petkovšek and Matevž  Dular},
	title = {Cavitation as a Potential Technology for Wastewater Management – An Example of Enhanced Nutrient Release from Secondary Pulp and Paper Mill Sludge},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {65},
	number = {11-12},
	year = {2019},
	keywords = {hydrodynamic cavitation; nutrients; paper mill plant; secondary sludge; sludge disintegration; wastewater treatment},
	abstract = {Wastewater recycling and sludge removal in the paper industry account for about 60 % of all process costs. New and environmentally friendly wastewater treatment techniques are, therefore, continually being developed. Cavitation exploitation is currently a well-investigated topic that is also interesting for the paper production industry. This study investigates efficiency of hydrodynamic cavitation alone and in combination with the addition of NaOH for the treatment of secondary pulp and paper mill sludge in order to enhance nutrient release. First, two laboratory-scale devices were tested: the blow-through and the rotating hydrodynamic cavitation generator. The latter set-up proved to be more efficient: therefore, further experiments were performed on its pilot-scale version. The results showed an increase of soluble chemical oxygen demand (CODs) by 514 mg/L, total nitrogen (Nt) by 17.4 mg/L, and total phosphorous (Pt) by 2.3 mg/L. To further increase nutrient release combination of cavitation and sludge sample alkalinization was tested. The addition of NaOH and 30 min cavitation of secondary sludge (500 L) significantly improved CODs and Nt release by 2400 mg/L and 120 mg/L, respectively. Microbiological photos revealed a definite disintegration of sludge flocks. According to our estimates, 1.9 kg of released CODs from alkaline pre-treated and cavitated sludge would cost only one euro.},
	issn = {0039-2480},	pages = {641-649},	doi = {10.5545/sv-jme.2019.6328},
	url = {https://www.sv-jme.eu/article/cavitation-as-a-potential-technology-for-wastewater-management-an-example-of-enhanced-nutrient-release-from-secondary-pulp-and-paper-mill-sludge/}
}
Sežun, M.,Kosel, J.,Zupanc, M.,Hočevar, M.,Vrtovšek, J.,Petkovšek, M.,Dular, M.
2019 November 65. Cavitation as a Potential Technology for Wastewater Management – An Example of Enhanced Nutrient Release from Secondary Pulp and Paper Mill Sludge. Strojniški vestnik - Journal of Mechanical Engineering. [Online] 65:11-12
%A Sežun, Mija 
%A Kosel, Janez 
%A Zupanc, Mojca 
%A Hočevar, Marko 
%A Vrtovšek, Janez 
%A Petkovšek, Martin 
%A Dular, Matevž 
%D 2019
%T Cavitation as a Potential Technology for Wastewater Management – An Example of Enhanced Nutrient Release from Secondary Pulp and Paper Mill Sludge
%B 2019
%9 hydrodynamic cavitation; nutrients; paper mill plant; secondary sludge; sludge disintegration; wastewater treatment
%! Cavitation as a Potential Technology for Wastewater Management – An Example of Enhanced Nutrient Release from Secondary Pulp and Paper Mill Sludge
%K hydrodynamic cavitation; nutrients; paper mill plant; secondary sludge; sludge disintegration; wastewater treatment
%X Wastewater recycling and sludge removal in the paper industry account for about 60 % of all process costs. New and environmentally friendly wastewater treatment techniques are, therefore, continually being developed. Cavitation exploitation is currently a well-investigated topic that is also interesting for the paper production industry. This study investigates efficiency of hydrodynamic cavitation alone and in combination with the addition of NaOH for the treatment of secondary pulp and paper mill sludge in order to enhance nutrient release. First, two laboratory-scale devices were tested: the blow-through and the rotating hydrodynamic cavitation generator. The latter set-up proved to be more efficient: therefore, further experiments were performed on its pilot-scale version. The results showed an increase of soluble chemical oxygen demand (CODs) by 514 mg/L, total nitrogen (Nt) by 17.4 mg/L, and total phosphorous (Pt) by 2.3 mg/L. To further increase nutrient release combination of cavitation and sludge sample alkalinization was tested. The addition of NaOH and 30 min cavitation of secondary sludge (500 L) significantly improved CODs and Nt release by 2400 mg/L and 120 mg/L, respectively. Microbiological photos revealed a definite disintegration of sludge flocks. According to our estimates, 1.9 kg of released CODs from alkaline pre-treated and cavitated sludge would cost only one euro.
%U https://www.sv-jme.eu/article/cavitation-as-a-potential-technology-for-wastewater-management-an-example-of-enhanced-nutrient-release-from-secondary-pulp-and-paper-mill-sludge/
%0 Journal Article
%R 10.5545/sv-jme.2019.6328
%& 641
%P 9
%J Strojniški vestnik - Journal of Mechanical Engineering
%V 65
%N 11-12
%@ 0039-2480
%8 2019-11-19
%7 2019-11-19
Sežun, Mija, Janez  Kosel, Mojca  Zupanc, Marko  Hočevar, Janez  Vrtovšek, Martin  Petkovšek, & Matevž  Dular.
"Cavitation as a Potential Technology for Wastewater Management – An Example of Enhanced Nutrient Release from Secondary Pulp and Paper Mill Sludge." Strojniški vestnik - Journal of Mechanical Engineering [Online], 65.11-12 (2019): 641-649. Web.  29 Sep. 2021
TY  - JOUR
AU  - Sežun, Mija 
AU  - Kosel, Janez 
AU  - Zupanc, Mojca 
AU  - Hočevar, Marko 
AU  - Vrtovšek, Janez 
AU  - Petkovšek, Martin 
AU  - Dular, Matevž 
PY  - 2019
TI  - Cavitation as a Potential Technology for Wastewater Management – An Example of Enhanced Nutrient Release from Secondary Pulp and Paper Mill Sludge
JF  - Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2019.6328
KW  - hydrodynamic cavitation; nutrients; paper mill plant; secondary sludge; sludge disintegration; wastewater treatment
N2  - Wastewater recycling and sludge removal in the paper industry account for about 60 % of all process costs. New and environmentally friendly wastewater treatment techniques are, therefore, continually being developed. Cavitation exploitation is currently a well-investigated topic that is also interesting for the paper production industry. This study investigates efficiency of hydrodynamic cavitation alone and in combination with the addition of NaOH for the treatment of secondary pulp and paper mill sludge in order to enhance nutrient release. First, two laboratory-scale devices were tested: the blow-through and the rotating hydrodynamic cavitation generator. The latter set-up proved to be more efficient: therefore, further experiments were performed on its pilot-scale version. The results showed an increase of soluble chemical oxygen demand (CODs) by 514 mg/L, total nitrogen (Nt) by 17.4 mg/L, and total phosphorous (Pt) by 2.3 mg/L. To further increase nutrient release combination of cavitation and sludge sample alkalinization was tested. The addition of NaOH and 30 min cavitation of secondary sludge (500 L) significantly improved CODs and Nt release by 2400 mg/L and 120 mg/L, respectively. Microbiological photos revealed a definite disintegration of sludge flocks. According to our estimates, 1.9 kg of released CODs from alkaline pre-treated and cavitated sludge would cost only one euro.
UR  - https://www.sv-jme.eu/article/cavitation-as-a-potential-technology-for-wastewater-management-an-example-of-enhanced-nutrient-release-from-secondary-pulp-and-paper-mill-sludge/
@article{{sv-jme}{sv-jme.2019.6328},
	author = {Sežun, M., Kosel, J., Zupanc, M., Hočevar, M., Vrtovšek, J., Petkovšek, M., Dular, M.},
	title = {Cavitation as a Potential Technology for Wastewater Management – An Example of Enhanced Nutrient Release from Secondary Pulp and Paper Mill Sludge},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {65},
	number = {11-12},
	year = {2019},
	doi = {10.5545/sv-jme.2019.6328},
	url = {https://www.sv-jme.eu/article/cavitation-as-a-potential-technology-for-wastewater-management-an-example-of-enhanced-nutrient-release-from-secondary-pulp-and-paper-mill-sludge/}
}
TY  - JOUR
AU  - Sežun, Mija 
AU  - Kosel, Janez 
AU  - Zupanc, Mojca 
AU  - Hočevar, Marko 
AU  - Vrtovšek, Janez 
AU  - Petkovšek, Martin 
AU  - Dular, Matevž 
PY  - 2019/11/19
TI  - Cavitation as a Potential Technology for Wastewater Management – An Example of Enhanced Nutrient Release from Secondary Pulp and Paper Mill Sludge
JF  - Strojniški vestnik - Journal of Mechanical Engineering; Vol 65, No 11-12 (2019): Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2019.6328
KW  - hydrodynamic cavitation, nutrients, paper mill plant, secondary sludge, sludge disintegration, wastewater treatment
N2  - Wastewater recycling and sludge removal in the paper industry account for about 60 % of all process costs. New and environmentally friendly wastewater treatment techniques are, therefore, continually being developed. Cavitation exploitation is currently a well-investigated topic that is also interesting for the paper production industry. This study investigates efficiency of hydrodynamic cavitation alone and in combination with the addition of NaOH for the treatment of secondary pulp and paper mill sludge in order to enhance nutrient release. First, two laboratory-scale devices were tested: the blow-through and the rotating hydrodynamic cavitation generator. The latter set-up proved to be more efficient: therefore, further experiments were performed on its pilot-scale version. The results showed an increase of soluble chemical oxygen demand (CODs) by 514 mg/L, total nitrogen (Nt) by 17.4 mg/L, and total phosphorous (Pt) by 2.3 mg/L. To further increase nutrient release combination of cavitation and sludge sample alkalinization was tested. The addition of NaOH and 30 min cavitation of secondary sludge (500 L) significantly improved CODs and Nt release by 2400 mg/L and 120 mg/L, respectively. Microbiological photos revealed a definite disintegration of sludge flocks. According to our estimates, 1.9 kg of released CODs from alkaline pre-treated and cavitated sludge would cost only one euro.
UR  - https://www.sv-jme.eu/article/cavitation-as-a-potential-technology-for-wastewater-management-an-example-of-enhanced-nutrient-release-from-secondary-pulp-and-paper-mill-sludge/
Sežun, Mija, Kosel, Janez, Zupanc, Mojca, Hočevar, Marko, Vrtovšek, Janez, Petkovšek, Martin, AND Dular, Matevž.
"Cavitation as a Potential Technology for Wastewater Management – An Example of Enhanced Nutrient Release from Secondary Pulp and Paper Mill Sludge" Strojniški vestnik - Journal of Mechanical Engineering [Online], Volume 65 Number 11-12 (19 November 2019)

Authors

Affiliations

  • Pulp and Paper Institute, Slovenia 1
  • Institute for the Protection of Cultural Heritage of Sloveni, Slovenia 2
  • University of Ljubljana, Faculty of Mechanical Engineering, Slovenia 3

Paper's information

Strojniški vestnik - Journal of Mechanical Engineering 65(2019)11-12, 641-649

https://doi.org/10.5545/sv-jme.2019.6328

Wastewater recycling and sludge removal in the paper industry account for about 60 % of all process costs. New and environmentally friendly wastewater treatment techniques are, therefore, continually being developed. Cavitation exploitation is currently a well-investigated topic that is also interesting for the paper production industry. This study investigates efficiency of hydrodynamic cavitation alone and in combination with the addition of NaOH for the treatment of secondary pulp and paper mill sludge in order to enhance nutrient release. First, two laboratory-scale devices were tested: the blow-through and the rotating hydrodynamic cavitation generator. The latter set-up proved to be more efficient: therefore, further experiments were performed on its pilot-scale version. The results showed an increase of soluble chemical oxygen demand (CODs) by 514 mg/L, total nitrogen (Nt) by 17.4 mg/L, and total phosphorous (Pt) by 2.3 mg/L. To further increase nutrient release combination of cavitation and sludge sample alkalinization was tested. The addition of NaOH and 30 min cavitation of secondary sludge (500 L) significantly improved CODs and Nt release by 2400 mg/L and 120 mg/L, respectively. Microbiological photos revealed a definite disintegration of sludge flocks. According to our estimates, 1.9 kg of released CODs from alkaline pre-treated and cavitated sludge would cost only one euro.

hydrodynamic cavitation; nutrients; paper mill plant; secondary sludge; sludge disintegration; wastewater treatment