Impacts of Landfill Cover in Pollution Prevention
Landfills pose risks of undesired environmental impacts due to the generation of leachate and gases. It is estimated that Malaysian landfills generate approximately 2.1x107m3 leachate and 2.7million m3 of landfill gas per day. With more than 90% of the disposal sites in Malaysia being non-sanitary landfills, it is crucial that suitable remedial measures are applied in order to reduce and control these emissions. The objective of this study was to evaluate the efficiency of different combinations of landfill final-cover systems in preventing water infiltration, which influenced the volume generated, as well as, to reduce gas emissions, under Tropical conditions. Based on the USEPA recommendations, type T-4 and T-5 models complied with the guidelines of leachate generation of less than 300 mm. The best height of Biocover application was 60cm where complete CH4 oxidation can be achieved within 3 days. Effective remediation of environment pollution at landfill sites, thus, can be achieved, if the proper combinations of cover layers are incorporated at closure. In conclusion, T-4 model with compost as the topsoil was found to be the most efficient system in reducing the emission of leachate and gas under Malaysian condition.
landfill cover design VHELP leachate mitigation biocover landfill gas mitigation
AGAMUTHU P FAUZIAH S.H. NAVARANI V. KHAIRUDIN L.
Institute of Biological Sciences,Faculty of Science,University of Malaya,50603 Kuala Lumpur,Malaysia
国际会议
2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)
上海
英文
823-829
2009-06-02（万方平台首次上网日期，不代表论文的发表时间）