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Comparison of resource efficiency of systems for management of toilet waste and organic household waste

Hellström, D; Baky, A; Palm, O; Jeppsson, Ulf LU and Palmquist, H (2003) 2nd International Symposium on Ecological Sanitation p.759-766
Abstract
Using a system analysis approach compares different systems for handling and treatment of

toilet waste and organic household waste. Design issues considered are source separation of

urine, use of vacuum toilets and advanced nutrient recovery processes such as Reverse Osmosis

(RO). All of the studied systems have low emissions of eutrophy ing compounds. Other environmental

effects are mainly related to the amount of exergy used at each system. Source

separating of urine is favourable if only a moderate (50 - 70 %) recycling potential for nutrients

such as N and K is required. However, if hi gher recycling potential is required systems using

nutrient recovery processes such as... (More)
Using a system analysis approach compares different systems for handling and treatment of

toilet waste and organic household waste. Design issues considered are source separation of

urine, use of vacuum toilets and advanced nutrient recovery processes such as Reverse Osmosis

(RO). All of the studied systems have low emissions of eutrophy ing compounds. Other environmental

effects are mainly related to the amount of exergy used at each system. Source

separating of urine is favourable if only a moderate (50 - 70 %) recycling potential for nutrients

such as N and K is required. However, if hi gher recycling potential is required systems using

nutrient recovery processes such as RO/evaporator are probably to prefer. For vacuum sy stems,

the maximum amounts of flush water must be below 10 lit/p,d to make them reasonable

efficient in terms of exergy consumption. The low-flush systems are less sensitive to the use of

flush water in terms of exergy consumption. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to conference
publication status
published
subject
keywords
nutrient recovery, System analysis, simulation, blackwater, toilet wastewater, exergy, organic household waste, urine separation
pages
759 - 766
conference name
2nd International Symposium on Ecological Sanitation
language
English
LU publication?
yes
id
07ce8a44-46d5-4761-9534-24e45313f3ba (old id 697683)
alternative location
http://www2.gtz.de/ecosan/download/ecosan-Symposium-Luebeck-session-h.pdf
date added to LUP
2007-12-05 14:23:03
date last changed
2016-04-16 11:35:17
@misc{07ce8a44-46d5-4761-9534-24e45313f3ba,
  abstract     = {Using a system analysis approach compares different systems for handling and treatment of<br/><br>
toilet waste and organic household waste. Design issues considered are source separation of<br/><br>
urine, use of vacuum toilets and advanced nutrient recovery processes such as Reverse Osmosis<br/><br>
(RO). All of the studied systems have low emissions of eutrophy ing compounds. Other environmental<br/><br>
effects are mainly related to the amount of exergy used at each system. Source<br/><br>
separating of urine is favourable if only a moderate (50 - 70 %) recycling potential for nutrients<br/><br>
such as N and K is required. However, if hi gher recycling potential is required systems using<br/><br>
nutrient recovery processes such as RO/evaporator are probably to prefer. For vacuum sy stems,<br/><br>
the maximum amounts of flush water must be below 10 lit/p,d to make them reasonable<br/><br>
efficient in terms of exergy consumption. The low-flush systems are less sensitive to the use of<br/><br>
flush water in terms of exergy consumption.},
  author       = {Hellström, D and Baky, A and Palm, O and Jeppsson, Ulf and Palmquist, H},
  keyword      = {nutrient recovery,System analysis,simulation,blackwater,toilet wastewater,exergy,organic household waste,urine separation},
  language     = {eng},
  pages        = {759--766},
  title        = {Comparison of resource efficiency of systems for management of toilet waste and organic household waste},
  year         = {2003},
}