Citation:
Barry D.L., Watts M. and Smith R. (2004). Practical gas emission control during landfilling. In: Proc. Waste 2004 Conf. Integrated Waste Management and Pollution Control: Policy and Practice, Research and Solutions. Stratford-upon-Avon, UK, 28-30 September 2004, 315-324
Abstract:
Whilst the major emphasis on landfill gas control has previously related to postcompletion
of landfill cells or phases rather than that during active waste placement, increasing
need for odour control has changed that pattern of ad hoc capping and gas collection systems.
This project (Barry et al. 2003, 2004a and 2004b) has provided quantitative information from
UK landfills on the scale of methane (CH4) emissions from the commencement of waste
deposition. The paper provides timescales for the establishment of methanogenesis and average
surface flux rates from commencement of waste placement. The highest flux rates were recorded
on waste side slopes and near the landfill edges; emissions from these zones are more conducive
to control and it is likely that the most cost-effective emission control systems should be based
on horizontal collection systems, reflecting the greater lateral permeability of wastes. Such
controls are compatible with on-going disposal operations and can be readily integrated with
permanent gas collection systems for energy recovery.
