Landfilling of combus-
tible waste
Wastewater handling
Biogas production
WEM
As landfilling of combustible waste was
only of secondary importance and is
prohibited completely since the year 2000
(section 3.8.2), greenhouse gas emissions
from solid waste disposal sites are small,
further decreasing, and only result from
waste deposited before the implementation
of the ban on landfilling of combustible
waste. The WEM scenario is thus based
on a continuation of the model for land-
filling of combustible waste until 2035
(IPCC, 2006; FOEN, 2019a). The share of
CH, fared reaches a value of 10 per cent
by 2030 (current value nine per cent), and
then declines to zero by 2050 as the
remaining emissions are getting to small to
be flared.
Emissions from wastewater handling are
assumed to scale with the evolution of
population.
It is assumed that increased demand for
biogas leads to the construction of addi-
tional biogas facilities (Prognos, 2012).
Accordingly, the total number of biogas
facilities reaches 209 by 2020 and 461 by
2030, remaining constant thereafter. The
WOM
It is assumed that the ban on landfilling of
combustible waste was not implemented.
Consequently, the amount of waste
disposed of at waste disposal sites under
the WOM scenario follows the same
evolution as under the WEM and WAM
scenarios until 1999, but then only de-
creases to 10 per cent of this value by
2020, remaining constant thereafter. It is
further assumed that the share of CH
recovered for power production (on total
CH produced) is the same under the
WOM scenario as under the WEM and
WAM scenarios (the share decreases
disproportionately as the cost-income ratio
is changing for the worse with decreasing
CH, production of the waste disposal site).
Finally, it is assumed that the share of CH
flared remains constant at 3.5 per cent
from 1990 to 2030, and then declines to
zero by 2050.
Same as for the WEM scenario.
It is assumed that