Sustainable landfill operation by combining open cell and water management strategies | |
| Author | Wiyada Wisiterakul |
| Call Number | AIT Thesis no.EV-06-42 |
| Subject(s) | Fills (Earthwork) Landfill gases Leachate |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. EV-06-42 |
| Abstract | This study aims to investigate the open cell operation by combining with water management. Water management consisted of storage, evaporation and recirculation of leachate. The influence of leachate recirculation on open cell landfill was monitored. The application of Hydrologic Evaluation of Landfill Performance (HELP) model for water management was determined by comparing with the results of experiment. Four landfill lysimeters located at AIT was adopted and operated in different simulation (open cell landfill, open cell landfill combine with leachate recirculation, open cell landfill of pre-sorted waste combine with leachate recirculation and conventional landfill). The leachate generation, leachate characteristics and settlement variation of MSW were monitored since July 2005. From December 2005, leachate recirculation mode was introduced due to reduced moisture content in lysimeters and reduced rainfall. The open cell landfill operation by combining with leachate recirculation (Open Cell No.2 and 3) had lower COD and TKN concentration compared with the lysimeters without leachate recirculation (Open Cell No.1 and Conventional Landfill). The Open Cell No.3 which mainly contained the highly biodegradable organic fraction showed the highest cumulative leachate generation, specific cumulative COD load and settlement rate. The water management by storage, evaporation and recirculation of leachate lead to 30% reduction in volume of leachate for treatment compared with the lysimeters without leachate recirculation. The water balance evaluated by HELP model agreed with experimental results during the period where leachate recirculation was not introduced. The application of model for leachate recirculation mode was limited. Improving open cell operation in tropical climate by understanding water management was necessary. Leachate was recirculated to enhance the waste stabilization in landfill and to improve the quality of leachate. After eight months of operation, the COD concentration for Open Cell No. 1, 2, 3 and Conventional Landfill were 940, 875, 865 and 970 mg/L, respectively; the TKNT concentration were 705, 665, 700 and 660, respectively. The waste volume reduction resulted in 21, 23, 29 and 16% of initial height of Open Cell No.1, 2, 3 and Conventional Landfill, respectively. |
| Year | 2006 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. EV-06-42 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Environmental Engineering (EV) |
| Chairperson(s) | Visvanathan, Chettiyappan |
| Examination Committee(s) | Preeda Parkpian; Glawe, U. |
| Scholarship Donor(s) | Her Majesty the Queen of Thailand |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 2006 |