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Revista de Chimie (Rev. Chim.), Year 2018, Volume 69, Issue 1, 31-33

https://doi.org/10.37358/RC.18.1.6039

Mihai Stefanescu, Gheorghe Nechifor, Costel Bumbac, Ioana Ionescu, Olga Tiron

Improvement of Active Biological Sludge Quality for Anaerobic Digestion Phase in the Wastewater Treatment Plant by Ultrasonic Pretreatment

Abstract:

This paper emphasized the influence of the main operating parameters of ultrasonic biological sludge pretreatment onto disintegration (DD-COD) and solubilizing degree of organic matter content. The optimal ultrasonic reaction time, energy and amplitude of ultrasonic waves and pH of the sludge (non-modified pH and pH 8.5) were established taking into account their influence on the solubility level of COD, an evolution of particles size. Correlations between disintegration degree and dimensional analysis were performed. Ultrasonic reactor operating to 20 kHz ultrasound frequency was a close system having cooling water jacket. Experimental tests in different operating conditions (reaction time 5 - 60 min., ultrasound energy 2000 - 9000 kJ, pH = 6.5/8.5) demonstrated that alkaline ultrasonic treatment (pH = 8.5, initial homogeneous COD = 72600 mg O2/L) at medium - high ultrasound energy levels led to highest disintegration degree - DD 12% (comparing with pH = 6.5 - DD ~ 5%). Still, the process should be managed carefully because of possibility to have important variation of DD during the ultrasonic treatment.
Keywords:
ultrasonic; sludge; disintegration degree; pretreatment

Issue: 2018, Volume 69, Issue 1
Pages: 31-33
Publication date: 15/02/2018
https://doi.org/10.37358/RC.18.1.6039
download pdf   Download Pdf Article
Creative Commons License
This article is published under the Creative Commons Attribution 4.0 International License
Citation Styles
Cite this article as:
STEFANESCU, M., NECHIFOR, G., BUMBAC, C., IONESCU, I., TIRON, O., Improvement of Active Biological Sludge Quality for Anaerobic Digestion Phase in the Wastewater Treatment Plant by Ultrasonic Pretreatment, Rev. Chim., 69(1), 2018, 31-33.

Vancouver
Stefanescu M, Nechifor G, Bumbac C, Ionescu I, Tiron O. Improvement of Active Biological Sludge Quality for Anaerobic Digestion Phase in the Wastewater Treatment Plant by Ultrasonic Pretreatment. Rev. Chim.[internet]. 2018 Jan;69(1):31-33. Available from: https://doi.org/10.37358/RC.18.1.6039


APA 6th edition
Stefanescu, M., Nechifor, G., Bumbac, C., Ionescu, I. & Tiron, O. (2018). Improvement of Active Biological Sludge Quality for Anaerobic Digestion Phase in the Wastewater Treatment Plant by Ultrasonic Pretreatment. Revista de Chimie, 69(1), 31-33. https://doi.org/10.37358/RC.18.1.6039


Harvard
Stefanescu, M., Nechifor, G., Bumbac, C., Ionescu, I., Tiron, O. (2018). 'Improvement of Active Biological Sludge Quality for Anaerobic Digestion Phase in the Wastewater Treatment Plant by Ultrasonic Pretreatment', Revista de Chimie, 69(1), pp. 31-33. https://doi.org/10.37358/RC.18.1.6039


IEEE
M. Stefanescu, G. Nechifor, C. Bumbac, I. Ionescu, O. Tiron, "Improvement of Active Biological Sludge Quality for Anaerobic Digestion Phase in the Wastewater Treatment Plant by Ultrasonic Pretreatment". Revista de Chimie, vol. 69, no. 1, pp. 31-33, 2018. [online]. https://doi.org/10.37358/RC.18.1.6039


Text
Mihai Stefanescu, Gheorghe Nechifor, Costel Bumbac, Ioana Ionescu, Olga Tiron,
Improvement of Active Biological Sludge Quality for Anaerobic Digestion Phase in the Wastewater Treatment Plant by Ultrasonic Pretreatment,
Revista de Chimie,
Volume 69, Issue 1,
2018,
Pages 31-33,
ISSN 2668-8212,
https://doi.org/10.37358/RC.18.1.6039.
(https://revistadechimie.ro/Articles.asp?ID=6039)
Keywords: ultrasonic; sludge; disintegration degree; pretreatment


RIS
TY - JOUR
T1 - Improvement of Active Biological Sludge Quality for Anaerobic Digestion Phase in the Wastewater Treatment Plant by Ultrasonic Pretreatment
A1 - Stefanescu, Mihai
A2 - Nechifor, Gheorghe
A3 - Bumbac, Costel
A4 - Ionescu, Ioana
A5 - Tiron, Olga
JF - Revista de Chimie
JO - Rev. Chim.
PB - Revista de Chimie SRL
SN - 2668-8212
Y1 - 2018
VL - 69
IS - 1
SP - 31
EP - 33
UR - https://doi.org/10.37358/RC.18.1.6039
KW - ultrasonic
KW - sludge
KW - disintegration degree
KW - pretreatment
ER -


BibTex
@article{RevCh2018P31,
author = {Stefanescu Mihai and Nechifor Gheorghe and Bumbac Costel and Ionescu Ioana and Tiron Olga},
title = {Improvement of Active Biological Sludge Quality for Anaerobic Digestion Phase in the Wastewater Treatment Plant by Ultrasonic Pretreatment},
journal = {Revista de Chimie},
volume = {69},
number = {1},
pages = {31-33},
year = {2018},
issn = {2668-8212},
doi = {https://doi.org/10.37358/RC.18.1.6039},
url = {https://revistadechimie.ro/Articles.asp?ID=6039}
}
 
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