Advanced

Full-scale in-line hydrolysis and simulation for potential energy and resource savings in activated sludge – a case study

Hey, Tobias LU ; Jönsson, Karin LU and la Cour Jansen, Jes LU (2012) In Environmental Technology 33(15). p.1819-1825
Abstract
The potential effects of altering primary settlers during biological in-line hydrolysis and converting a nitrifying activated sludge process into a partial pre-denitrification process for the purpose of resource conservation were evaluated. A full-scale primary sludge hydrolysis experiment was performed at a wastewater treatment plant and implemented in a dynamic modelling tool based on ASM2d. The full-scale hydrolysis experiment achieved a volatile fatty acid (VFA) production of 43 g CODHAc·m−3 with no release of ammonium. Additional nitrogen removal of 44 t N·a−1 was simulated, and the produced hydrolysate was able to replace 50% of the annual ethanol usage. Furthermore, 196 MWh of electricity per annum could be saved through the... (More)
The potential effects of altering primary settlers during biological in-line hydrolysis and converting a nitrifying activated sludge process into a partial pre-denitrification process for the purpose of resource conservation were evaluated. A full-scale primary sludge hydrolysis experiment was performed at a wastewater treatment plant and implemented in a dynamic modelling tool based on ASM2d. The full-scale hydrolysis experiment achieved a volatile fatty acid (VFA) production of 43 g CODHAc·m−3 with no release of ammonium. Additional nitrogen removal of 44 t N·a−1 was simulated, and the produced hydrolysate was able to replace 50% of the annual ethanol usage. Furthermore, 196 MWh of electricity per annum could be saved through the reduction of ethanol production and the optimization of the operation strategy of the activated sludge tank by operating a different number of anoxic zones. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
ASM2d, energy savings, full scale, hydrolysis, internal carbon source
in
Environmental Technology
volume
33
issue
15
pages
1819 - 1825
publisher
Selper Ltd
external identifiers
  • wos:000306683500016
  • scopus:84864841805
ISSN
1479-487X
DOI
10.1080/09593330.2011.650217
language
English
LU publication?
yes
id
18c827d2-c921-47c0-894c-3a3a1058b7a5 (old id 2375607)
date added to LUP
2012-04-04 11:41:01
date last changed
2017-08-13 03:04:45
@article{18c827d2-c921-47c0-894c-3a3a1058b7a5,
  abstract     = {The potential effects of altering primary settlers during biological in-line hydrolysis and converting a nitrifying activated sludge process into a partial pre-denitrification process for the purpose of resource conservation were evaluated. A full-scale primary sludge hydrolysis experiment was performed at a wastewater treatment plant and implemented in a dynamic modelling tool based on ASM2d. The full-scale hydrolysis experiment achieved a volatile fatty acid (VFA) production of 43 g CODHAc·m−3 with no release of ammonium. Additional nitrogen removal of 44 t N·a−1 was simulated, and the produced hydrolysate was able to replace 50% of the annual ethanol usage. Furthermore, 196 MWh of electricity per annum could be saved through the reduction of ethanol production and the optimization of the operation strategy of the activated sludge tank by operating a different number of anoxic zones.},
  author       = {Hey, Tobias and Jönsson, Karin and la Cour Jansen, Jes},
  issn         = {1479-487X},
  keyword      = {ASM2d,energy savings,full scale,hydrolysis,internal carbon source},
  language     = {eng},
  number       = {15},
  pages        = {1819--1825},
  publisher    = {Selper Ltd},
  series       = {Environmental Technology},
  title        = {Full-scale in-line hydrolysis and simulation for potential energy and resource savings in activated sludge – a case study},
  url          = {http://dx.doi.org/10.1080/09593330.2011.650217},
  volume       = {33},
  year         = {2012},
}