A comparison is made between a source separation system and an end-of-pipe solution, both
systems are including recovery. The chosen systems are a blackwater system with urine separation
and a WWTP plant with Aqua Reci process (using SCWO) as the energy and recovery unit for
fertiliser. Selected indicators for each criterion are chosen according to Malmqvist and Palmquist
(2004). Since each indicator may be positive or negative, a change of the indicators is made to be in
positive manner, which will facilitate the comparison between the systems. Data for the comparison
are taken from Ahlman et al., (2004); Balmér et al., (2002); Berg and Tälleklint (2005); Hellström,
(2005); Stendahl and Jäfverström (2004); Stark and Hultman (2003); Vinnerås (2002). Table 2
shows the comparison between the source separating system (S) and the end-of pipe solution (E)
with selected indicators for each criteria. The system chosen is the one which gives lowest
respectiviely highest effect depending on the indicator.