Mediterranean Action Plan

130
ENERGY AND SUSTAINABLE DEVELOPMENT IN THE MEDITERRANEAN
Table 53 Indicator ENE_C12 Job creation through the development of RE and RUE
Job creation through the development of RE and
RUE
Indicator Number
Table 54 Indicator ENE_C08 Expenditures in RE and RUE: RE and RUE programmes share in energy
investments
4. Examples of good practice, case studies
Indicator Number
Expenditures in RE and RUE 0
4.1 Content of good practice and case studies
4.1.1 Landfill gas migration and utilization at Sarajev o landfill- Case Study
Today, the landfill gas, produced with the process of anaerobic degradation of solid waste
has been considered as alternative energy source. Sarajevo landfill, where it has been
estimated that 3 millions of tons of mainly household waste of organic origin have been
deposited from 1963 until today, is related to extremely negative experiences with the
uncontrolled explosions and fires of landfill gas. Because of that, in the process of recovery
activities which are particularly intensive from 1996 until today, the problem of landfill gas
monitoring, and also in the future of its utilization, has been considered with the special
attention. The main design for landfill gas migration has been prepared according to which
the wells for gas collection have been built. At the temporary sanitary landfill, of area of 1
hectare, the experimental boreholes for landfill gas collection have been constructed. Six
boreholes is connected to the torch of the capacity 60-300 m 3 /h with the aim of experimental
insurance of possibility of utilization of landfill gas, for the electricity generation. In the study,
the results of the evaluation of the landfill gas quantity are given for the Sarajevo landfill by
application of the multiphase mathematic model, as well as the results of the quality and
quantity of the landfill gas from the temporary experimental disposal site.
The technology of the landfill gas utilization is consisted of:
The evaluation of the quantity and the level of landfill gas production on the basis of the
composition and age of deposited solid waste
Engineering of the collection system for landfill gas which is the most adequate on the
selected landfill, as well as the way of the disposal of the waste itself
Obtaining the most cost-efficient scheme for landfill gas utilization
The priority has been put on the landfill gas monitoring. For that purpose, 14 boreholes of
110mm profile have been performed on the sanitary disposal site at the area of 1 hectare. In
the centre of the borehole, perforated PE-HD pipes have been put for collection of the landfill
biogas. The pipes are buried with pebble of 80-120 mm granulation and with the glass. The
distance between the boreholes is 60m. Their purpose was to accept the landfill gas and
ventilate it in the atmosphere. In that way, the further accumulation of the gas within the
landfill body has been stopped and the probability for repeated fires and explosions have
been reduced.
It has been estimated that 3 millions of tons of mainly household waste of organic origin has
been deposited from 1963 until today. Considering that gas produced at the landfill is a result
of microbiological degradation of organic fraction of the deposited solid waste, it can be
concluded that Sarajevo landfill presents the great potential for production of sufficient
quantities of landfill gas that can be utilized in cost-efficient way.
0