Construction and monitoring of a closed test cell of landfill under tropical conditions | |
| Author | Myo Htut Zin |
| Call Number | AIT Thesis no.GE-08-12 |
| Subject(s) | Fills (Earthwork)--Tropical conditions Leachate--Tropical conditions |
| Note | Submitted in partial fulfillment of the requirements for the degree of Master of Science in Geotechnical and Geoenvironmental Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. GE-08-12 |
| Abstract | This study deals with the construction of a closed test cell (modern-style landfill) and the investigation of the operation of the test cell under the tropical climate condition. The initial water balance in closed test cell is also studied by using the HELP (Hydrologic Evaluation of Landfill Performance) model. The closed test cell consists of four elements: liner system, leachate collection and removal system, gas collection system and final cover system. This closed test cell was constructed by using the locally available construction materials and filling the domestic waste. For a period of rainy and dry seasons, the rainfall, the leachate generation and characteristic, the gas production, the settlement of waste and the groundwater quality near the test cell were monitored. After six months of monitoring period, it was found that about 33 % of rainfall generated leachate. The variation of pH in leachate indicates the phase changes from acidogenic to methanogenic condition within the short period. The gas such as CO2, O2, N2, H2, and CH4 were detected. Nitrogen (N2) was collected as maximum percentage and it occupies 80 % of the total gas composition. No groundwater contamination was found and indicates the efficiency of the liner system. Within this limited period, it can be concluded that the closed test cell control leachate generation and environmental pollution. The results also showed that the settlement in the test cell is steadily increased. Landfill design is based upon the characteristics of the solid waste to be disposed off and hydraulic properties of cover soil as well as barrier soil liner in particular. The initial water balance analysis by HELP model shows that the hydraulic properties of the layer material have significant impact on the volume of leachate produced. While simulating on a yearly basis, the HELP model seems to be a good tool for planning and designing of closed cell landfills |
| Year | 2009 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. GE-08-12 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Geotechnical Engineering (GE) |
| Chairperson(s) | Park, Kyung-Ho; |
| Examination Committee(s) | Bergado, Dennes T.;Pham Huy Giao; |
| Scholarship Donor(s) | Asian Institute of Technology Fellowship; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 2009 |