Pre-treatment of wastewater sludge before anaerobic digestion - hygienisation, ultrasonic treatment and enzyme dosing
Davidsson, Åsa LU
and la Cour Jansen, Jes
LU
(2006)
In Vatten: tidskrift för vattenvård /Journal of Water Management and research
62(4).
p.335-340
- Abstract
- Pre-treatment of sludge before anaerobic digestion can increase methane production and degradation of organic
matter. There are various pre-treatment methods for this purpose. Anaerobic digestion tests were performed for
comparison of three pre-treatment methods (hygienisation, ultrasonic treatment and enzyme dosing) used
separately or in combination on biosludge and mixed sludge. COD solubilisation and methane potentials from
the differently pretreated sludges were used for comparison. Pilot-scale digestion was further used for evaluation
of hygienised/untreated mixed sludge in semi-continuous operation.
The results show that pre-treatment of biosludge leads to increased methane... (More) - Pre-treatment of sludge before anaerobic digestion can increase methane production and degradation of organic
matter. There are various pre-treatment methods for this purpose. Anaerobic digestion tests were performed for
comparison of three pre-treatment methods (hygienisation, ultrasonic treatment and enzyme dosing) used
separately or in combination on biosludge and mixed sludge. COD solubilisation and methane potentials from
the differently pretreated sludges were used for comparison. Pilot-scale digestion was further used for evaluation
of hygienised/untreated mixed sludge in semi-continuous operation.
The results show that pre-treatment of biosludge leads to increased methane potential, especially hygienisation
and ultrasonic treatment. Combining enzyme dosing with hygienisation or ultrasonication implies additional
increase in methane potential while hygienisation combined with ultrasonication does not.
Increased COD solubilisation seen after pre-tretment does not always bring about an increase in methane
potential. On the other hand, pre-treatment methods like ultrasonication can lead to higher methane production
although the COD solubilisation is low. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3917104
- author
- Davidsson, Åsa
LU
and la Cour Jansen, Jes
LU
- organization
- publishing date
- 2006
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Vatten: tidskrift för vattenvård /Journal of Water Management and research
- volume
- 62
- issue
- 4
- pages
- 335 - 340
- publisher
- Föreningen Vatten
- ISSN
- 0042-2886
- language
- English
- LU publication?
- yes
- id
- d9458477-2ccb-4060-ae87-f78919bc1404 (old id 3917104)
- date added to LUP
- 2016-04-01 16:15:56
- date last changed
- 2018-11-21 20:40:02
@article{d9458477-2ccb-4060-ae87-f78919bc1404,
abstract = {{Pre-treatment of sludge before anaerobic digestion can increase methane production and degradation of organic<br/><br>
matter. There are various pre-treatment methods for this purpose. Anaerobic digestion tests were performed for<br/><br>
comparison of three pre-treatment methods (hygienisation, ultrasonic treatment and enzyme dosing) used<br/><br>
separately or in combination on biosludge and mixed sludge. COD solubilisation and methane potentials from<br/><br>
the differently pretreated sludges were used for comparison. Pilot-scale digestion was further used for evaluation<br/><br>
of hygienised/untreated mixed sludge in semi-continuous operation.<br/><br>
The results show that pre-treatment of biosludge leads to increased methane potential, especially hygienisation<br/><br>
and ultrasonic treatment. Combining enzyme dosing with hygienisation or ultrasonication implies additional<br/><br>
increase in methane potential while hygienisation combined with ultrasonication does not.<br/><br>
Increased COD solubilisation seen after pre-tretment does not always bring about an increase in methane<br/><br>
potential. On the other hand, pre-treatment methods like ultrasonication can lead to higher methane production<br/><br>
although the COD solubilisation is low.}},
author = {{Davidsson, Åsa and la Cour Jansen, Jes}},
issn = {{0042-2886}},
language = {{eng}},
number = {{4}},
pages = {{335--340}},
publisher = {{Föreningen Vatten}},
series = {{Vatten: tidskrift för vattenvård /Journal of Water Management and research}},
title = {{Pre-treatment of wastewater sludge before anaerobic digestion - hygienisation, ultrasonic treatment and enzyme dosing}},
url = {{https://lup.lub.lu.se/search/files/4620173/3917111}},
volume = {{62}},
year = {{2006}},
}