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Control of hydrogen sulfide emissions using autotrophic denitrification landfill biocovers:engineering applications

Frontiers of Environmental Science & Engineering 2011年第2期5卷 149-158页

作者： Daoroong SUNGTHONG Debra R.REINHART Department of Environmental Science Faculty of ScienceSilpakorn UniversityNakhon Pathom73000Thailand Civil Environmental and Construction Engineering DepartmentUniversity of Central FloridaOrlandoFL 32826USA

hydrogen sulfide(H_(2)S)emitted from construction and demolition waste landfills has received increasing *** its unpleasant odor,longterm exposure to a very low concentration of H_(2)S can cause a public health *** the case of construction and demolition(C&D)waste landfills,where gas collection systems are not normally required,the generated H_(2)S is typically not controlled and the number of treatment processes to control H_(2)S emissions in situ is *** attractive alternative may be to use chemically or biologically active landfill covers.A few studies using various types of cover materials to attenuate H_(2)S emissions demonstrated that H_(2)S emissions can be effectively *** this study,therefore,the costs and benefits of H_(2)S-control cover systems including compost,soil amended with lime,fine concrete,and autotrophic denitrification were *** on a case-study landfill area of 0.04 km^(2),the estimated H_(2)S emissions of 80900 kg over the 15-year period and costs of active cover system components(ammonium nitrate fertilizer for autotrophic denitrification cover,lime,fine concrete,and compost),ammonium nitrate fertilizer is the most cost effective,followed by hydrated lime,fine concrete,and yard waste *** concrete and yard waste compost covers are expensive measures to control H_(2)S emissions because of the large amount of materials needed to create a *** H_(2)S emissions using fine concrete and compost is less expensive at landfills that provide on-site concrete recovery and composting facilities;however,ammonium nitrate fertilizer or hydrated lime would still be more cost effective applications.

关键词： hydrogen sulfide emissions construction and demolition waste autotrophic denitrification landfill biocovers

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