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Thursday 8th - Session G (Pineta Room)


SESSION G11
 - 9:00 - 10:40
Workshop: Hybrid landfill bioreactors
Chair: Raffaello Cossu (IT), Dongbei Yue (CN)

Introductory lectures:

R. Cossu, D.B Yue (IT)
Hybrid landfill bioreactor
H. Woelders, H. Oonk (NL)
Sustainable landfill management at the landfill De Kragge II (Netherlands)
E. Pasparakis, F-M. Pellera, E. Gidarakos (GR)
Sequential anaerobic-aerobic treatment of the organic fraction of municipal solid waste and lignocellulosic materials in laboratory-scale landfill-bioreactors


10:40 - 11:10 Coffee break


SESSION G12
- 11:10 - 12:50
IWWG Workshop: Longterm efficiency of methane oxidation systems - Can natural analogies be used for long-term evaluation?
Chairs: Marion Huber-Humer (AT), Julia Gebert (DE)

Sustaining microbial methane oxidation in landfill covers, or its enhancement in specifically designed methane oxidation systems, as a cost-effective technology for controlling and mitigating landfill gas emission is still an integral research and technical issue in waste management. Natural habitats in which organic matter is degraded under anaerobic conditions (wetlands, peat bogs etc.) are a significant global source of methane, too. In these systems the extent of emitted methane is also modulated by the methane oxidation process in the upper aerated layers. One main purpose of the workshop is thus to extract and discuss the comparability of engineered and natural methane oxidation systems. Based on emission and oxidation data for natural methane-influenced habitats it shall be discussed if oxidation performance and methane emissions in natural systems can be used to derive target values for acceptable emissions from “anthropogenic habitats” like landfills.
The workshop shall provide a panel for interactive group discussion to jointly consider new approaches to deal with the above mentioned issues. Two impulse presentations shall stimulate and lead group discussion.

Introductory lectures:

J. Gebert (DE), M. Huber-Humer (AT)
What can we learn from natural methane oxidation systems? We suppose that the processes and mechanisms are similar – But are we right?
J. Gebert (DE), M. Huber-Humer (AT)
Which monitoring approaches and controlling levels are acceptable for “remaining” methane emissions from engineered oxidation systems compared to natural ones?

12:50 - 15:30 Lunch break


SESSION G13
- 15:30 - 17:10
Workshop: Heat utilization from landfills
Chair: Giorgio Mannina (IT)

Heat is a primary by-product of landfilling of municipal solid waste. Long-term elevated temperatures have been reported for MSW landfills under different operational conditions and different climatic regions around the world. An opportunity exists to extract heat from landfill systems for beneficial use as an alternative energy source. Approaches to evaluate feasibility and potential for extracting heat from landfills will be outlined and discussed in the workshop.

Introductory lectures:

N. Yesiller, J. L. Hanson, E. H. Yee, K. B. Kopp (US)
Assessing approaches for extraction of heat from MSW landfills
J. Faitli, A. Erdélyi, J. Kontra, T. Magyar, J. Várfalvi, A. Murányi (HU)
Pilot scale decomposition heat extracting and utilization system built into the Gyál municipal solid waste landfill

17:10 - 17:40 Coffee break
17:40 - 18:00 Poster discussion


SESSION G14
- 18:00 - 19:40
Workshop: Experiences in China
Chair: Pinjing He (CN)

Being China the guest country of this 15th edition of the Sardinia Symposium, during this workshop we will take a dive into the waste management experiences of the Dragon Country.

Introductory lectures:

L. Zhan (CN)
Regulations and standards for MSW landfilling in China
K. Shih (HK)
Sludge management in Hong Kong
F. Zhang (CN)
Kitchen waste recycling in China
D. Yue (CN)
Leachate treatment in China
X. Liu (CN)
MSW management and treatment in China